Technical Resources Archives

RT2315 Hot Melt Candle Glue

May 1, 2023April 21, 2023 by wicksunlimiteddbc1

Hot melt candle glue is an adhesive that anchors wick clip assemblies to the bottom of empty container candles. It is typically a blend of different polymers that melts when heated to a very high temperature allowing it to be deposited within the container. Once it cools and solidifies, it forms a bond that anchors the wick clip assembly in place during the pouring of liquid wax and repeated burn cycles.

What is RT2315 Hot Melt Glue for Container Candles?

RT2315 is a specialty hot melt candle glue supplied by Wicks Unlimited to safely and securely anchor metal wick clip assemblies inside empty candle containers. This glue has been successfully tested to withstand the high temperatures encountered on and around the container’s base, especially while pouring, the candle’s final burn cycles, and subsequent end of life.

One of RT2315’s most sought-after benefits is its heat resistance. This vital attribute minimizes the chance of the phenomenon known as wick migration, where the wick can slide from its original anchor point during pouring or when the burn pool temperature is elevated towards the candle’s end of life.

With the wick off-center due to wick migration, the candle will begin to burn unevenly and form soot on the side of the container’s wall where the flame is too close. It may not sound dangerous, but it is to the brand’s reputation and the candle’s safety. End-users may not purchase your candle brand again since their overall experience was compromised by wick migration. While an uneven burn, sooting, and the candle’s flame too close to the container’s wall caused by wick migration do not sound dangerous, it is indeed.

The flame near the container’s wall often causes localized overheating of the container and the liquid wax pool. As a result of localized overheating caused by wick migration, the candle’s container could get too hot and transfer heat to adjacent surfaces and even crack, causing the wax to flow out of the container and causing a fire hazard. To mitigate the chance of wick migration it is vital to use the appropriate heat resistant candle glue.

Candle manufacturers and fillers depend on RT2315 to improve production line efficiency for several reasons. First, RT2315 glue deposits are precise and repeatable, making them ideal for high-speed production lines when the machinery is at their optimal operating temperatures. Second, RT2315 features a short open time, the specific amount of time to bond the materials (wick clip assemblies and the container) together before the adhesive starts to form a skin. The short open time enables manufacturers and fillers to begin instantaneous wax filling, saving them precious time. Third, unlike other hot melt candle adhesives, RT2315 deposits are clean without the stringing associated with other glues not designed for candle applications, keeping the production area and machinery nozzles clean.

Now that you have a basic understanding of RT2315 adhesive let’s explore some common questions from our customers.

Common Questions About RT2315 Hot Melt Candle Glue

Question: Can RT2315 glue secure wick clip assemblies in all types of candles?

Answer: Yes, RT2315 can be used to secure wick clip assemblies in many different candle types, including paraffin, soy, beeswax, and other waxes or blends. As with everything in candle manufacturing, it is always important to refer back to the wax manufacturer’s instructions to ensure adhesive compatibility.

Question: Will RT2315 work with Wicks Unlimited’s tin-coated wick clip assemblies and sustainers?

Answer: After extensive research and testing, the combustion experts at Wicks Unlimited selected to stock RT2315 because of its excellent surface adhesion to tin-coated wick clip assemblies at high temperatures.

Question: My current adhesive fails during pouring and towards the candle’s end of life, causing wick migration. Will RT2315 prevent wick migration?

Answer: RT2315 dramatically reduces the chances of wick migration since it has been successfully tested to withstand high temperatures while still providing superior wick clip assembly anchoring.

Question: What is the melting point of RT2315?

Answer: The melting point is approximately 320℉.

Question: What is the softening point of RT2315?

Answer: The softening point is 290℉.

Question: Does RT2315 experience “stringing” like other hot melt glues?

Answer: RT2315 does not experience “stringing” like other hot melt glue due to its molecular structure.

Question: How is RT2315 deposited into a candle’s container?

Answer: The most effective method to deposit RT2315 into empty candle containers or molds is using industrial glue depositing machinery at the optimal operating temperature featuring zero cavity nozzles for quick adhesion. Please contact Wicks Unlimited to learn more about how to deposit RT2315 into containers and molds.

Question: What type of candle containers is RT2315 compatible with?

Answer: RT2315 candle adhesive is compatible with many different substrate types including both glass and metal containers.

Question: My customers like repurposing the candle’s container after the final burn cycle. Is RT2315 easy to remove?

Answer: Many other types of glue are too gooey to remove entirely from the bottom of the candle’s container. However, RT2315 is easy to remove from the bottom of the container, making repurposing a breeze.

Question: What is the minimum order quantity (MOQ) for RT2315?

Answer: RT2315 glue pillows are available in bulk packaging starting at quantities as low as 50 pounds.

Question: How can I view a Safety Data Sheet (SDS)?

Answer: Click here to view and download RT2315’s Safety Data Sheet (SDS).

Question: How do I request a sample of RT2315 candle glue?

Answer: Requesting a sample of RT2315 glue is as easy as calling Wicks Unlimited at (877) 765-0748, emailing [email protected], or using the contact form below.

Learn More About RT2315 Hot Melt Candle Glue

Creating a better candle experience by mitigating wick migration and improving manufacturing productivity with RT2315 begins by partnering with the combustion experts at Wicks Unlimited. From its superior surface adhesion while pouring to its thermal resistance towards the candle’s end of life, it is easy to see why candle professionals prefer RT2315 hot melt glue over other types of candle wick adhesives, such as wick stickers, cool melt glue, and super glue.

With the addition of RT2315 to our product lineup, which includes over 450 different candle wicks, including cored, flat, and square braided wicks, and metal wick clip assemblies and sustainers, it is no wonder manufacturers depend on Wicks Unlimited for all their candle combustion needs.

To learn more about RT2315 or to request a sample, call (877) 765-0748, email [email protected], use the contact form below, or visit booth #1111 during the NCA’s 2023 Annual Conference & Expo in Charleston, SC.

*Please note that Wicks Unlimited only provides a wick recommendation. The candle manufacturer is responsible for final testing.

*Wicks Unlimited does not perform sensory tests.

An Introduction to Wick Optimization

January 19, 2023 by wicksunlimiteddbc1

Candle manufacturers depend on Wicks Unlimited’s candle wick optimization services to prevent combustion issues from occurring in the first place or to solve existing combustion issues. Frequently, candle combustion issues are caused by either the manufacturer using the incorrect wick size, wick family, or a combination of both for a particular wax formulation, fragrance load, and/or container type.

Since each wick has unique burn characteristics, selecting and testing the wick type and size during pre-production is vital rather than rushing to production with an un-optimized wick. Even with extensive research and testing, candle combustion issues can come out of the blue. Please continue reading to learn what candle wick optimization is, when to complete it, and how to partner with Wicks Unlimited to optimize your next candle wick.

What is Candle Wick Optimization?

Candle wick optimization services, like those performed at Wicks Unlimited, focus on three interrelated quality pillars: to ensure proper wick size and type for a particular candle system, improve candle performance, and improve candle safety. Using candle samples that the manufacturer ships to Wicks Unlimited, we complete four (4) hours of burn testing following the aforementioned quality pillars.

Ensure Proper Wick Size & Type: The benefits of using an appropriately sized wick for a specific candle system cannot be overstated. Using your shipped wickless samples, the combustion experts at Wicks Unlimited select and test different types of wick. Once this is complete, we recommend an optimized wick that is the precise type and size for your specific candle application.

Improve Candle Performance: Wick optimization also improves the candles’ overall quality. Burn characteristics of an optimized wick include: a flame height that is the ideal size and below the 3″ safety threshold set by the ASTM for your specific container, minimal soot production, a wax pool that reaches the inside edges of the container and does not tunnel, consistent scent throw, and the actual burn time meets your expectations. In other words, wick combustion performance is optimal throughout the candle’s life.

Improve Candle Safety: Another benefit of professional wick optimization is improved candle safety. An optimized wick for a particular candle ensures that the candle’s flame height is not excessive. Excessive flame height is not only dangerous to the end-user and the brand’s reputation, it indicates incomplete combustion.Also, excessive heat from the flame can evaporate fragrance prematurely, reducing the candle’s overall scent throw.

Also, professional wick optimization prevents manufacturers from using a wick that is too small or large for a particular size candle. Candle wick that is too small is not optimal, and using a wick that is too large generates a larger than the average flame size that causes a deep burn pool that liquefies a large portion of the candle. Also, an oversized wick increases the candle’s surface area temperature to dangerously high levels. While candle manufacturers are responsible for final testing, safe candle combustion is at the heart of everything we do at Wicks Unlimited

When to Complete Candle Wick Testing & Optimization?

The simple answer as to when to complete wick testing and optimization is often. Since candle combustion is an exact science, even the slightest change to the formulation directly affects the candle’s combustion, overall performance, and safety. This below list is a good starting point for when to test and optimize a candle.

During the development phase of bringing a new candle to market.
Changing wick type and size
Changing wax blends
Changing fragrance type
Increasing or decreasing fragrance load
Adding or removing wax additives or enhancers
Adding or removing dyes

As a rule of thumb, manufacturers need to optimize and test a particular candle after even making the slightest adjustment. Again, a good candle is a safe candle.

How to Partner with Wicks Unlimited for Wick Optimization?

Partnering with Wicks Unlimited for candle wick optimization is easier than you think. Follow the steps below to schedule and optimize your candle system today.

Before contacting Wicks Unlimited, gather this vital information to help guide the conversation with our combustion experts.
What type of candle are you seeking to optimize? (Paraffin, Soy, Pillar, Container, Votive, etc.)
What is the size and type of wick you are currently using?
What is the candle’s container size?
How do you prefer your candle to perform in terms of temperature?
Are you currently experiencing any combustion issues? If so, what are you experiencing?
Is this an existing candle system, or is it in development?
With this information, contact Wicks Unlimited to schedule an appointment to discuss your burn objective and any combustion issues.
After speaking with a combustion technician, follow their instructions to ship three wickless candles for each fragrance or variation for optimization.
Sit back and relax. Wicks Unlimited will recommend the perfect wick for your specific candle within two (2) to three (3) weeks, depending on candle size.

Contact Wicks Unlimited Today

Take the guesswork out of wick selection by partnering with Wicks Unlimited for wick optimization. Within weeks, we will help recommend the best wick for your candle and help you identify the combustion and burn issues you are experiencing. With over 450 different candle wicks, including cored, flat, and square braided wicks, from leading manufacturers such as Atkins & Pearce, Wedo, and Sao Vitor available for waxing, it is no wonder candle manufacturers depend on Wicks Unlimited.

In addition to waxed wick on reels, Wicks Unlimited offers twenty-five (25) unique metal candle wick sustainers with regular and safety neck heights that enable candle manufacturers to create tabbed wicks from waxed wick on reels. Wicks Unlimited also manufactures and supplies an innovative self-centering sustainer that enables candle manufacturers to “drop and pour.” Also, all of our wick clip assemblies are made to your exact wax and wick length specifications. Use the contact form below or call 954-946-3500 to speak with a team member and partner with Wicks Unlimited for wick optimization.

*Please note that Wicks Unlimited only provides a wick recommendation. The candle manufacturer is responsible for final testing.

*Wicks Unlimited does not perform sensory tests.

Solving Common Combustion Issues Caused By High Levels of Candle Fragrance

December 2, 2022 by wicksunlimiteddbc1

Wicks-Unlimited-candle-wick-sizes-768x512-2

In part one of this blog series, Candle Fragrance, and their Role in Combustion, Wicks Unlimited explored natural and synthetic fragrances and the different notes within the fragrance pyramid. To achieve optimal combustion in candle systems with high levels of fragrance, each part of the candle system, including the wick, wax, sustainer, and container, must work in harmony with the natural or synthetic fragrance powders or essential oils. In part two of this blog series, the experts at Wicks Unlimited further explore candle fragrances and their role in combustion and solve common issues caused by high fragrance levels. These include corrosion and oxidation of the metal wick sustainer, little to no scent throw, and clogged and degraded candle wick caused by particular fragrances.

Issue: Corrosion and Oxidation of the Metal Wick Sustainer

Solution: Wicks Unlimited Tin-Coated Metal Wick Sustainer

Corrosion and oxidation of the metal wick sustainer is a reasonably common issue encountered by candle manufacturers. Certain waxes, fragrances, and essential oil blends can contain raw materials that corrode steel and other metals often used to manufacture candle sustainers. While manufacturers can work with their candle wax and fragrance suppliers to try and prevent corrosion and oxidation, it is easier to partner with an experienced candle sustainer manufacturer like Wicks Unlimited to solve this issue. All of our metal candle sustainers, including regular length, safety length, self-centering, and wood wick clips, are manufactured from 0.254 mm thick tin-coated steel. Since tin is highly inert to acids, bases, and solvents, often found in synthetic fragrances and essential oils, Wicks Unlimited tin-coated metal candle sustainers inhibit corrosion and oxidation caused by high fragrance levels and essential oils.

Issue: Little to No Scent Throw
Solution: Review the Candle Development Process with Wicks Unlimited Technical Service Team.

Little to no scent throw is a topic that the technical service team at Wicks Unlimited receives many questions about. Many variables come into play to achieve the ideal scent throw in finished candles. While the below list is not exhaustive, it is an excellent starting point to start the conversation with the Wicks Unlimited technical services team about your candle having little to no scent throw.

Type and Size of Candle Wick: Using the correct wick size is vital to achieving an optimized burn and scent throw since it will help achieve the ideal burn pool. Too small of a burn pool will cause a weak scent throw. On the other hand, too large of a burn pool, and the fragrance will evaporate, causing a weak scent throw. Finding the sweet spot to create the ideal burn pool for your particular candle fragrance often depends on the wick size.
Fragrance Type: Simply put, some fragrances burn easier than others due to their particular molecular structure. Is it a natural or synthetic fragrance? Each fragrance oil is unique. Some are manufactured from natural ingredients with minimal amounts of solvent that tones down the scent. In contrast, others are designed to have a more robust scent profile, as in synthetic fragrances.
Wax Type: Paraffin, soy, palm, and beeswax are some of the waxes available. The wax selection depends on several factors, including what type of candle you are manufacturing (pillar, container, tealights, and taper) and the level of fragrance you wish to add. Different fragrance oils perform differently depending on the type of wax used. Simply put, certain fragrance oils will not blend with certain waxes. Since different fragrance oils have different molecular structures, some perform better than others, depending on the wax type. While Wicks Unlimited does not make specific wax recommendations, it is well known that paraffin-based waxes provide a better scent than soy waxes.
The temperature of the Wax When Adding the Fragrance: Candle combustion and the scent throw is an exact science. Adding the fragrance oil to the melted wax at too high a temperature can cause it to evaporate. Alternatively, adding the fragrance at too low a temperature can prevent the fragrance from distributing and binding to the wax. It is essential to review the wax manufacturer’s specifications and recommended temperatures.

Issue: Certain Fragrances Clog and Degrade the Candle Wick

Solution: Partnering with Wicks Unlimited Technical Service Team to Solve Candle Combustion Issues

Sometimes, the wax, wick, and container type perform poorly during the candle development process. Combustion issues caused by fragrances can be challenging to diagnose and solve. It is important to remember that candle combustion is a process that relies on capillary action to draw up melted wax (fuel) to fuel the flame. If this process is compromised, the candle will not perform as expected. While the candle’s flame may begin well, the flame slowly shrinks and then is completely extinguished. Trimming the candle wick does not solve the weak flame profile and sudden extinguishing. High levels of natural or synthetic fragrances can clog and physically damage the wick, permanently altering capillary action and the overall burn characteristics, causing the wick to extinguish.

Partner with the Wicks Unlimited technical service team to solve any of these combustion issues. Once the Wicks Unlimited technicians understand your burn objectives and fragrance expectations, our candle technicians can begin a complimentary, comprehensive analysis. Once the analysis is complete, Wicks Unlimited will make specific wick and sustainer recommendations that meet your burn and fragrance objectives. The importance of testing different wax, wick, fragrance, and container types, cannot be overstated.

Develop the Perfect Scent Throw

Metal Candle Sustainers — Assortment of Metal Candle Wick Sustainers

Creating a better candle experience with consistent cold and hot scent throw begins with partnering with the combustion experts at Wicks Unlimited. With over 450 different candle wicks, including cored, flat, and square braided wicks, from leading manufacturers such as Atkins & Pearce, Wedo, and Sao Vitor available for waxing, it is no wonder candle manufacturers depend on Wicks Unlimited.

In addition to waxed wick on reels, Wicks Unlimited offers twenty-five (25) unique metal candle wick sustainers with regular and safety neck heights that enable candle manufacturers to create tabbed wicks from waxed wick on reels. To meet the burn and fragrance preferences of end-users at the candle’s end of life, manufacturers can select from either puncture or non-puncture sustainer crimping to create the ultimate candle experience for candles with high fragrance levels. Wicks Unlimited also manufactures and supplies an innovative self-centering sustainer that enables candle manufacturers to “drop and pour” and wick clip assemblies made to your exact wax and wick length specifications. Use the contact form below or call 954-946-3500 to speak with a team member and partner with Wicks Unlimited to develop candles with high levels of fragrance

Candle Fragrances and Their Role in Combustion: An Introduction

November 3, 2022November 3, 2022 by wicksunlimiteddbc1

Developing candles with a consistent cold and hot scent throw is an exact science. Each part of the candle system, including the wick, wax, sustainer and container, must work in harmony with the natural or synthetic fragrance oils, powders or essential oils for optimal combustion. Too much or too little fragrance will affect the combustion process and the end-user experience. In part one of this two part series focusing on the role fragrance plays in candle combustion, the experts at Wicks Unlimited introduce the reader to the differences between natural and synthetic fragrances and explore the different notes within the fragrance pyramid.

An Introduction to Natural and Synthetic Fragrances

Natural fragrances contain ingredients derived from natural origins. They typically have a mixture of essential oils extracted from blossoms, citruses, woods and leaves, spices and resins (botanical extracts), or from animals (musk). Synthetic fragrances sometimes called “fragrance oils,” are created in a laboratory. They are designed to mimic and enhance natural fragrances with a more potent and long-lasting scent throw. It is worth noting that synthetic fragrance manufacturers do not have to disclose the individual components of their fragrances since they are considered a trade secret.

To help illustrate and understand natural and synthetic fragrance notes, candle manufacturers rely on a fragrance pyramid. The fragrance notes are positioned within the pyramid based on their volatility. Scent notes at the very top of the pyramid evaporate faster and therefore are more volatile, while notes at the bottom evaporate slower and are longer lasting. Let’s quickly explore each section of the pyramid.

Top Notes

Top notes first appear within 15 minutes, are the first scents one smells, and play a significant role in the purchasing decision. These notes typically include light, fresh, and citrusy aromas and introduce the candle fragrance to the end-user via a cold throw. Scents that make up the top notes evaporate the fastest since they have the smallest molecules. Since scents in the top evaporate the quickest due to their molecular structure, it is vital to have the correct fragrance ratio to avoid premature evaporation.

Top Notes Characteristics

Top notes appear with 15 minutes of ignition.
Top notes include light, fresh, and citrusy aromas.
Top notes play an important role in the purchasing decsion since they introduce the candle’s fragrance to the end-user via cold throw.

Middle Notes

Middle notes often called “heart notes,” appear within 1 to 2 hours of ignition and are more robust, complex, and full-bodied than top notes. They enhance the top and bottom notes by providing balance and harmony to the overall fragrance blend. Middle notes often are the most prominent and include florals, light fruits, and spicy fragrances.

Middle Notes Characteristics

Middle notes appear within 1 to 2 hours of ignition.
Middle notes provide balance and harmony to the overall fragrance blend and often include florals, light fruits, and spicy fragrance(s).
Middle notes are more robust, complex, and full-bodied than top notes.

Base Notes

Base notes, sometimes called bottom notes, are the last to appear within 3 to 4 hours of ignition. They provide a foundation for the fragrance’s lighter notes since bottom notes are composed of larger molecules that are heavier and longer lasting. Popular base notes include vanilla, woodsy, and balsamic scents. Base notes also linger after the candle is extinguished, a feature many end-users enjoy.

Base Note Characteristics

Base notes appear within 3 to 4 hours of ignition.

Base notes provide a foundation for the fragrance’s lighter notes and often include vanilla, woodsy, and balsamic fragrance(s).

Base notes are compromised of larger molecules and base note scents may linger after the candle is extinguished.

Finding a Balance Between Fragrance Levels and Combustion

Optimal candle combustion and scent throw is only achieved when each part of the candle system including the wick, wax, sustainer, and container work in harmony. Even if just one of those parts is off, the candle will not achieve an optimized burn or scent throw. In part two of this series on the role fragrance plays in candle combustion, the experts at Wicks Unlimited explore common combustion issues caused by candles with high-level fragrances and their solutions. Use the contact form below or call 954-946-3500 to speak with a team member today and partner with Wicks Unlimited to develop or troubleshoot candles with high levels of fragrance.

An Introduction to Candle Troubleshooting In Celebration of World Candle Month

September 29, 2022September 29, 2022 by wicksunlimiteddbc1

During the candle development process, there is much to consider: the candle’s overall appearance, wax type, wick type, wax dye, and scent. The list is almost endless. Even though extensive burn tests were performed, combustion issues sometimes appear once customers have purchased your candle. In part one of this two-part series celebrating World Candle Month, Wicks Unlimited took a deep dive into the different candle systems available on the market. Now, in part two, the candle combustion experts at Wicks Unlimited share common candle combustion issues with basic troubleshooting steps and the importance of using the correct candle wick for your specific candle.

The Importance of Using the Correct Candle Wick

The primary purpose of a wick is to deliver fuel in the form of wax up to the candle’s flame through a process known as capillary action. The candle’s wick is an efficient pump that draws superheated liquefied wax into the flame that sustains combustion. Using the correct wick for your specific candle’s size, shape, dye, container type, and fragrance load is essential for an optimized burn and a happy customer. Too much or too little fuel will cause an avalanche of undesired and unsafe burn characteristics.

Issue

Mushroom Capped Wick

Signs

After a burn cycle the tip of the wick looks like a mushroom.
The mushroom effect is caused by carbon buildup.

Troubleshooting

An oversized wick is providing too much fuel (wax) to the flame that it can effectively burn.
Using an incorrect wick size/type for a particular candle system can cause mushroom capping.
Ensure you are following the manufacturer’s guidelines for the wax, scent, and dye ratios. Remember, candle making is a science.
It is important to note that some wick types are more prone to mushrooming than others.
Speak with a Wicks Unlimited candle combustion specialist to ensure you are using the correct wick type and size for your specific application.

Issue

Afterglow

Signs

Continued heat and light emitted from the wick’s tip once manually extinguished after a reasonable amount of time.
Afterglow is not only unsafe, but it can also damage the candle brand’s reputation.

Troubleshooting

Afterglow most often occurs as a direct result of mushroom capping during the burn cycle.
Speak with a Wicks Unlimited candle combustion specialist to ensure you are using the correct wick type and size for your specific application.

Issue

Excessive Wick

Signs

Mushrooming, sooting, an uneven burn and a larger than expected flame height.
The soot sticks to the candle jar, surrounding walls, and potentially the ceiling.

Troubleshooting

Using an incorrect wick size/type for a particular candle system can cause an excessive/long wick.

Speak with a Wicks Unlimited candle combustion specialist to ensure you are using the correct wick type and size for your specific application.

Issue

Smoking/Sooting

Signs

- The flame is unusually high and is releasing smoke/soot consisting of tiny particles of unburned fuel.
- The soot sticks to the candle jar, surrounding walls, and potentially the ceiling.
- Smoking/sooting is not only unsafe, but it can also damage the candle brand’s reputation.

Troubleshooting

The candle wick is delivering more fuel (wax) to the flame than it can burn.
Smoking/sooting indicates not only incomplete combustion but also improper wick selection for this particular candle system.
Ensure you are following the manufacturer’s guidelines for the wax, scent, and dye ratios. Remember, candle making is a science.
Speak with a Wicks Unlimited combustion specialist to ensure you are using the correct wick type and size for your specific application.

Issue

Tunneling

Signs

The burn pool does not extend to the edges of the container.
A very narrow melt pool in the center of the candle with unconsumed wax around the circumference is a sign of tunneling.

Troubleshooting

Tunneling is caused by an undersized wick.
To overcome tunneling, adjust your wick size up or down accordingly.
It is also worth double-checking the wax, dye, and fragrance ratios to ensure the manufacturer’s specifications are followed.
With this information in hand, contact a Wicks Unlimited combustion specialist to ensure you are using the correct wick type and size for your specific application.

Issue

Oversized Flame

Signs

Larger than the average flame size.
Deep burn pool liquifying a large portion of the candle. Mushroom capping.
Strong fragrance throw that diminishes rapidly.
The candle’s surface area temperature is unusually high.

Troubleshooting

Adjust your wick size down to begin the troubleshooting process.
A properly sized wick creates an appropriate burn pool according to the candle’s width with the correct flame height.
Speak with a Wicks Unlimited combustion specialist to ensure you are using the correct wick type and size for your specific application.

Issue

Flame Diminishing

Signs

Flame extinguishing
Tunneling
Pay close attention to the burn pool and ensure it is forming from edge to edge of the container.

Troubleshooting

Flame diminishing can be caused by an undersized wick is a wick that is too small for a particular candle system and does not generate enough combustion (heat) to melt the wax.
Some fragrances, essential oils, and natural waxes are able to degrade the wick material and in consequence, extinguish the flame.

Use the form below to partner with Wicks Unlimited today to troubleshoot combustion issues for pillar, container, soy, tealight, or votive candle systems. With over 450 different candle wicks, including cored, flat, and square braided wicks, in addition to metal wick sustainers, it is no wonder manufacturers depend on Wicks Unlimited for all of their candle combustion needs.

Discovering Different Candle Types in Celebration of World Candle Month

September 15, 2022September 15, 2022 by wicksunlimiteddbc1

As candles have evolved over the centuries, one thing has remained constant, their ever-growing popularity. The evolution of wax, wick, sustainer, and fragrance technology has enabled manufacturers to create candle systems that consumers know and love. To celebrate World Candle Month and the rich diversity of candles, the combustion experts at Wicks Unlimited decided to focus on the unique candle systems available today, along with basic combustion troubleshooting in a two part series. In part one of this series, Wicks Unlimited takes a deep dive into the different candle systems available on the market.

What is World Candle Month?

The NCA (National Candle Association) created World Candle Month in 2013 to “bring to light the various ways candles enrich our daily lives.” Their partners, ALAFAVE (Latin American Candle Manufacturers Association) and the ECMA (European Candle Manufacturers Association) have combined forces in 2022 to celebrate World Candle Month. Their goal is to unite candle lovers from across the globe, encourage industry collaboration, and drive candle awareness, sales, and safety. Wicks Unlimited is at the forefront of candle combustion technology and World Candle Month as a member of the NCA, ALAFAVE, and the ECA.

An Introduction to Candle Types

Pillar Candles

Pillar candles are long sturdy freestanding candles with a round, square or unique shape and one or more wicks at their center. Since pillar candles are freestanding, they must be manufactured from a rigid wax formulation. Candle manufacturers typically use a high melt paraffin wax with a melting point of or about 131 °F to provide rigidity and structural integrity for pillar candles. Other popular waxes for pillar candles include bees and palm wax. Some manufacturers even use special molds to create sleek or textured sides with unique scents to create an extra memorable candle experience. Whether the end-user places their pillar candle on the kitchen table or next to their hot tub, they look stunning in any setting as long as they are burned
safely.

Container Candles

Container candles derive their name from the method in which they are manufactured since the wax is poured into a non-flammable metal, glass, or ceramic container that also includes the wick. In other words, the wax is poured directly into the candle’s container for molding, storage, and eventual use. Many manufacturers rely on Wicks Unlimited’s innovative self-centering sustainers to increase production volume since it allows them “drop and pour,” saving time and money. Since container candles are not freestanding like pillar candles, candle manufacturers can use any number of different wax types, including soy, soy/paraffin blends, bees, and palm wax. Container candles are known for the size of their melt pool and consistent scent throw when manufactured from lower melting point waxes that can enhance scent throw. Consumers feel that they can customize their container candle experience by selecting a container and fragrance types that suit their personality and burn preferences.

Soy Candles

As the name suggests, this type of candle is made from 100% all-natural wax flakes manufactured from hydrogenated soybean oil. Due to changing consumer preferences, candle manufacturers now create different soy candles, including containers, votives, and even tea lights, due to soy’s surging popularity. Many consumers prefer soy candles since little to no black petro-soot is generated while burning compared to traditional paraffin-based waxes. Since soy wax has a lower melting point (124 °F) than paraffin-based waxes, end-users enjoy a candle that burns slower and longer. An additional benefit to soy’s lower melting point is the extra scent throw generated by the melt pool. It is worth mentioning that using wicks with special treatment in soy and other natural waxes is vital. While the correct wick for a particular candle will always depend on the type of wax, fragrance load and the candle’s diameter. RRD, HTP and wood wick are good starting points for candles with natural waxes.

Gel Candles

Consumers adore gel candles for their rich glow, and embedded decorative items such as glitter, small stones, and even tiny plastic toys to create a unique visual effect. The gel is composed of 95% mineral oil and 5% powdered polymer resin which manufacturers mix to make the gel with a consistency of Jell-0 with a melting point of roughly 275 °F.

To regulate the scent throw of gel candles, manufacturers select from three different grades (densities) of gel wax: high grade (High Polymer), medium grade (Medium Polymer), and low grade (Low Polymer). The high-grade (HP) gel is more rigid and can hold significantly more fragrance than the other two grades. Also, the additional rigidity enables manufacturers to embed heavier decorative items within the gel. Manufacturers often prefer the medium grade (MP) since it offers the best of both worlds. First, it is a firm gel that works well for most gel candle types and containers. Second, it can hold a decent amount of fragrance to create a good scent throw. Low-grade polymer (LP) is the least rigid of the three polymer grades and retains the least amount of fragrance. It is worth noting that gel candles manufactured from low polymer with embedded decorative items can shift during shipping.

*Wicks Unlimited does not promote or sell wicks for Gel Candles.

Tealight Candles

The humble tealight candle remains one of the most popular candle types among consumers because of its functionality, price point, and overall aesthetic. A tealight is comprised of a circular metal or plastic casing or cup for the wax, a 3.8 mm sustainer for the wick, and a wick. Consumers can choose from different wax options, including paraffin and soy, dye colors, and even scents for an individualized candle experience. Once the tealight is lit, its unique design allows the wax to liquify completely. Not all tealights are the same. Some manufacturers do not use a wick sustainer to anchor the wick. Instead, they rely on adhesive to anchor the wick to the casing or cup. Inadequate wick anchoring can cause the wick to float to the surface of the liquid wax, compromising the capillary action. The tealight’s beauty is in its simple design and soft, gentle glow.

Votive Candles

Votive candles are a close cousin of the tealight candle. Consumers adore votive candles for their warm glow, slow burn, and relaxed ambiance they create for religious offerings, overall decor, and emergencies. Although larger than tealights, votive candles are one of the smaller candles available. Votive candles feature a unique “bell-top” design that creates a channel around the circumference of the votive holder. The “bell-top” allows for an even fragrance distribution and scent through the melted wax. Depending on the manufacturer, votive candles are sold with or without the votive holder. Even though many votives are sold without the votive holder, this type of candle still requires a 3.8 mm sustainer to keep the wick upright and secure. Depending on the amount of fragrance, Aroma-Lite™, Stabilo, Stabilo KST, Paper Core, TL, and LX wick are popular votive wick options. Since votive candles often burn for several hours, manufacturers often use a lower melt point wax such as soy, palm, and beeswax, while some are manufactured from paraffin wax.

Candle Manufacturers Rely on Wicks Unlimited for All of Their Combustion Needs

No matter the candle type you are manufacturing, make sure to partner with Wicks Unlimited, the leading domestic based waxed wick on reels and candle sustainer manufacturer and supplier. No matter if you are manufacturing a pillar, container, soy, tealight, or votive candle, Wicks Unlimited is the ultimate candle combustion destination. With over 450 different candle wicks, including cored, flat, and square braided wicks, it is no wonder manufacturers depend on Wicks Unlimited.

In addition to waxed wick on reels, Wicks Unlimited offers twenty-five (25) unique metal wick sustainers with regular and safety neck heights that enable manufacturers to create tabbed wicks from waxed wick on reels. Now more than ever, candle manufacturers are customizing the candle’s end of life characteristics to create the ultimate candle experience with either puncture or non-puncture sustainer crimping to create the ultimate candle experience.

Everyday is World Candle Month at the Wicks Unlimited in-house wick optimization and combustion troubleshooting services department. Our experienced candle technicians work with sustainers and wicks for candle’s size, shape, dye, container type, and fragrance everyday. Take the guesswork out of selecting the right candle wick by using the contact form below or call to partner with Wicks Unlimited today. Check back soon to read part two of this two part series on an introduction to candle combustion troubleshooting in celebration of World Candle Month.

Waxed Wick On Reels: An Introduction

August 31, 2022July 26, 2022 by wicksunlimiteddbc1

Waxed-Wick-on-Reels-Manufacter-&-Supplier

Candle manufacturers partner with Wicks Unlimited for waxed wick on reels to increase their manufacturing capacity when using, or transitioning to, high-speed “in-line” cut, tab, and glue machinery to create candle systems that drive repeat customers. Wicks Unlimited’s proprietary waxing process gently forces air out of the raw wick. This step, known as de-gassing, saturates the entire wick, including the core, with wax. As a result, the wick will burn more uniformly, consistently, and predictably while simultaneously making it more robust to work with during production. One of the main reasons high-volume manufacturers prefer Wicks Unlimited’s waxed wick on reels is that they feature minimal ends. In other words, the waxed wick on the reel is made from one continuous piece of wick with a start point and an endpoint. Manufacturers will appreciate the simplicity of minimal ends during production, while end-users will appreciate its burn characteristics.

To meet the specific requirements of your particular candle machinery, Wicks Unlimited’s waxed wick features up to 3,000 yards (2,743 meters) per reel. All our reels are made from high-strength recycled cardboard to help candle companies reduce their carbon footprint and meet their sustainability targets. Wicks Unlimited’s extensive candle wick portfolio is just the beginning. Whether you’re a candle manufacturer looking for a new domestic-based wick supplier, transitioning to new machinery, or away from hand cut & tab production to automated machinery, Wicks Unlimited partners with you every step.

Why Partner with Wicks Unlimited as Your Waxed Wick on Reels Supplier?

Migrating to Wicks Unlimited as your Premier Wick Supplier When candle manufacturers first migrate to Wicks Unlimited as their waxed wick supplier, our wick experts work with them to ensure production runs smoothly and efficiently. During the transition process, a dedicated Wicks Unlimited waxed wick specialist reviews any historical wick data from customer past records, including types and sizes and machinery type(s). After this review, Wicks Unlimited will send three standard waxed wick on reel size samples to ensure compatibility with your machinery. Rest assured that Wicks Unlimited’s waxed wick on reels are guaranteed to work with your specific machinery. Once sizing is confirmed, it is simple to place an order or to create a standing purchase order for waxed wick via email or over the phone.

Transitioning from Hand Cut & Tab to Automatic Machinery

Wicks Unlimited has helped hundreds of candle manufacturers transition to new machinery while minimizing production disruptions. The transition process is similar to when manufacturers first partner with Wicks Unlimited for waxed wick on reels. Once manufacturers select the specific machine for their production needs, Wicks Unlimited then works directly with the machinery manufacturer to ensure compatibility of our waxed wick on reels. In addition to working with the machinery manufacturer, the combustion experts at Wicks Unlimited, upon request, can review your wick selection to ensure optimal candle combustion. When production begins with the new machinery, manufacturers can focus on scaling production rather than worrying about the reel fitting the machinery or the candle’s burn characteristics. Wicks Unlimited handles those concerns during the transition process.

Access to Wicks Unlimited Technical Services

Whether you are a manufacturer developing a new candle or need combustion troubleshooting due to a change in your manufacturing process or supplier, Wicks Unlimited has you covered. Waxed wick on reel customers can access Wicks Unlimited’s state-of-the-art candle wick optimization and combustion lab to troubleshoot or solve any burn issues you are experiencing. Once our candle technicians understand your unique wick or candle combustion need, we begin comprehensive testing and analysis. After testing and analysis, we report our findings and make individualized wick and sustainer recommendations to help you find an optimized burn.

Access to Wicks Unlimited’s Make & Hold Program

Now more than ever, having a reliable U.S.-based waxed wick on reel manufacturer and supplier is vital for success. Wicks Unlimited customers participating in our Make & Hold program are guaranteed same or next-day shipping on their most critical candle components, including waxed wick on reels, wick-clip assemblies, and sustainers. Once candle manufacturers meet the minimum order quantities and are accepted for Wicks Unlimited’s Make & Hold program, they can then rely on it to solve just-in-time challenges, simplify their supply chain, and optimize production.

The Wicks Unlimited Difference

Creating a better candle experience for the end-user begins with partnering with a reliable waxed wick on reel domestic-based manufacturer and supplier, like Wicks Unlimited. With over 450 different candle wicks, including cored, flat, and square braided wicks, from leading manufacturers such as Atkins & Pearce, Wedo, and Sao Vitor available for waxing, it is no wonder candle manufacturers depend on Wicks Unlimited.

In addition to waxed wick on reels, Wicks Unlimited offers twenty-five (25) unique metal wick sustainers with regular and safety neck heights that enable candle manufacturers to create tabbed wicks from waxed wick on reels. To meet the burn preferences of the end-users at the candle’s end of life, manufacturers can select from either puncture or non-puncture sustainer crimping to create the ultimate candle experience. Wicks Unlimited also manufactures and supplies an innovative self-centering sustainer that enables candle manufacturers to “drop and pour,” and wick clip assemblies made to your exact wax and wick length specifications. Use the contact form below or call 954-946-3500 to speak with a team member to partner with Wicks Unlimited for waxed wick on reels.

Create a Better Candle Experience with Non-Puncture Candle Sustainers

May 10, 2022May 4, 2022 by wicksunlimiteddbc1

Developing and creating a candle system that meets the specifications of the industry and the burn characteristics demanded by today’s consumer is challenging. Manufacturers have to consider the container size, wax formulation, wick type, sustainer type, scent throw, and burn characteristics close to or at the candle’s end of life. Those characteristics are essential since manufacturers want the end-user to have a positive experience with their candles.

Non-puncture-crimping — Sustainer with Non-Puncture Crimping

During the troubleshooting phase of candle development, common issues like overheating, heat transfer, and wick migration can appear since candle combustion is a complex process. To assist manufacturers, Wicks Unlimited developed non-puncture candle wick sustainers manufactured from the highest quality tin-coated steel. The tin coating inhibits corrosion which can be caused by the fragrance, dyes, and essential oils common in candles sold worldwide. Let’s explore how these non-puncture crimping candle sustainers work and how they can improve your next production run and the end-user experience.

Prevents Overheating: Candle systems using Wicks Unlimited safety neck candle sustainers with non-puncture crimping “shut off” at the end of their life, leaving unconsumed fuel (wax) while simultaneously preventing overheating. In comparison, metal candle sustainers with puncture crimping consume all the fuel (wax) right up to the candle’s end of life, generating additional heat. Candles with non-puncture crimping have an overall lower thermal profile at their end of life. As a result, heat transfer to the surface the candle is resting on is kept at a minimum since heat during this phase can be intense.

Reduces Heat Transfer to Adjacent Surfaces: Once a candle leaves the manufacturer and is purchased by an end-user, manufacturers no longer control how long it burns despite a warning label on the container. Heat transfer from candle combustion to adjacent surfaces, especially unsupervised candles on non-heat-resistant surfaces, increases heat transfer through conduction, convection, and radiation components. Heat transfer to surfaces is especially prevalent when the candle begins to reach its end of life when there is a deep melt pool and the flame is now positioned lower in the container. Since Wicks Unlimited’s non-puncture safety neck sustainers leave unconsumed fuel (wax) at the bottom of the container and “shut off” at the candle’s end of life, subsequent heat transfer to adjacent surfaces is greatly reduced.

Prevents Wick Migration: During the manufacturing process, manufacturers rely on industry standards and proprietary methods to adhere the sustainer to the bottom of the container using specially formulated high temperature, hot melt adhesive, or wick stickers. Wick migration is the process of the candle wick migrating or “creeping” off-center towards the sidewalls of the container. In the case of multi-wick candles, wicks can migrate closer to each other or farther apart during repeated burn cycles. The main culprit of wick migration is excessive heat, especially towards their end of life. High temperature at the end of life can soften the glue or wick sticker adhesive causing the sustainer to “slide” or migrate. To prevent wick migration caused by heat in single or multi-wick candle systems, non-puncture sustainers “shut off” the candle, leaving unconsumed fuel (wax) and keeping the wick sustainers centered.

The Wicks Unlimited Difference

Selecting metal candle sustainers with non-puncture crimping not only prevents overheating, heat transfer, and wick migration, but using them creates a better candle experience for the end-user. Wicks Unlimited combustion experts partner with candle manufacturers during the candle formulation or troubleshooting phase to solve combustion issues and make recommendations to ensure that your candle uses the appropriate metal wick sustainer to exceed your customers’ expectations.

In addition to non-puncture safety-length wick sustainers, Wicks Unlimited offers metal candle sustainers with puncture crimping that consume all the fuel (wax), an innovative self-centering sustainer that enables candle manufacturers to “drop and pour,” saving them both time and money. Wicks Unlimited is the ultimate destination for all of your combustion needs with over 450 different wicks stocked on-site, including cored and flat braided wicks, 24 different candle sustainers, and wick clip assemblies made to order to meet your exact wax and wick length specifications.

Connect in-person with a Wicks Unlimited team member at the 2022 World Candle Congress at the Sheraton New Orleans hotel in New Orleans, LA, May 16-19, at booth #800 to discuss sustainers with non-puncture crimping or any of our other candle combustion products for manufacturers. Use the form below to set an appointment with Wicks Unlimited at the World Candle Congress or to speak with a team member today.

What Are the Differences Between Non-Puncture and Puncture Crimping?

February 4, 2022January 31, 2022 by wicksunlimiteddbc1

Wicks Unlimited developed two innovative crimping options to meet the performance demands of both candle manufacturers and end-users: non-puncture and puncture crimping. Non-puncture crimping enables candles to “shut off” while puncture crimping generates additional wax (fuel) flow that consumes all the fuel (wax) at the end of life, respectively. Both Non-puncture and puncturing crimping will help “shut off” the flame. The difference is that non-puncture will extinguish the flame as soon as it reaches the top of the neck. While all of Wicks Unlimited metal candle sustainers are manufactured from the highest quality tin-coated steel to inhibit corrosion caused by fragrance and essential oils, their end-of-life characteristics depend on their neck height and crimp type.

Metal Sustainers with Non-Puncturing Crimp

Wicks Unlimited signature non-puncturing crimping sustainer series enables manufacturers to develop candles that “shut off” at their end of life. This innovative sustainer design will meet all standard operating requirements for crimp hold. Candle manufacturers rely on non-puncture metal sustainers to reduce the overall thermal profile of a particular candle system to meet their customers’ preferences.

Non-puncture candle sustainer’s neck heights range from 6.0 mm and include safety neck sustainers with neck heights of 10.0 mm, 13.0 mm, 13.2 mm, and 14.5 mm to meet your specific safety requirements. Manufacturers can select from either 14.5 mm, 15.0 mm, or 20.0 mm base diameter(s). They can also take advantage of Wicks Unlimited’s wide selection of wick products since its wick insertion hole sizes include 2.1 mm, 3.0 mm, 3.8 mm, and 4.1 mm.

Signature series sustainers with non-puncturing crimp “shut off” at their end of life.
Available with neck heights of 6.0 mm, 10.0 mm, 13.0 mm, 13.2 mm, and 14.5 mm.
Signature series sustainers with a non-puncturing crimp are available with 14.5 mm, 15.0 mm, and 20.0 mm base diameter(s)
Wick insertion hole diameters range from 2.1 mm to 4.1 mm.
Non-puncture crimp sustainers are manufactured from .010″ (0.254 mm) thick tin-coated steel that helps inhibit corrosion.

Metal Sustainers with Puncture Crimping

Precision high-speed equipment creates a piercing in the sustainer’s wall generating additional (fuel) wax flow at the candle’s end of life. Metal sustainers with puncture crimping enable manufacturers to develop candles that consume all the fuel (wax) as opposed to non-puncture crimping that leaves unconsumed wax at the end of life, respectively. Wicks Unlimited innovative puncture crimping provides a tight wick grip and simultaneously increases the crimp’s overall tensile strength.

Metal sustainers with puncture crimping are available with neck heights of 6.0 mm and include safety neck sustainers with neck heights of 10.0 mm, 13.0 mm. 13.2 mm and 14.5 mm. Candle manufacturers can select base diameter(s) ranging from 14.5 mm to 20.00 mm. With wick insertion hole diameters ranging from 2.1 mm to 3.0 mm, manufacturers can choose from Wicks Unlimited’s diverse collection of wick products to meet their production requirements.

Metal sustainers with puncture crimping are Wicks Unlimited’s best-selling sustainer series.
Available with neck heights of 6.0 mm, 10.0 mm, 13.0 mm, 13.2 mm, and 14.5 mm.
Standard series sustainers are available with 14.5 mm, 15.0 mm, and 20.0 mm base diameter(s).
Wick insertion hole diameters range from 2.1 mm to 3.0 mm.
Manufactured from .010″ (0.254 mm) thick tin-coated steel that helps inhibit corrosion.
Sustainers with puncture crimping enable candles to consume all the fuel at the end of life.
High-speed equipment creates a piercing in the sustainer’s wall generating additional (fuel) wax flow at the candle’s end of life.

Creating a Better Candle Experience with the Appropriate Crimp Type

Take the guesswork out of selecting the appropriate sustainer crimp by partnering with the combustion specialists at Wicks Unlimited. We work with candle manufacturers during the candle formulation or troubleshooting phase to ensure their candle system uses the appropriate crimping option for optimal combustion. With over 450 different wicks stocked on-site, including cored and flat braided wick, 26 different candle sustainers, and an assortment of wick clip assemblies, Wicks Unlimited is the ultimate destination for all your combustion needs. Use the form below to contact Wicks Unlimited to discuss whether sustainers with non-puncture or puncture crimping are appropriate for your next production run.