Category Archive: Hot melt

Advantages of Industrial Hot Melt Adhesives

Hot Melt chips

 

If your daily conversations include phrases like “open time”, “set time”, “tack”, and “surface energy”, your job probably involves some form of hot melt adhesive, or HMA. Popular among hobbyists for use in crafting projects (think of those glue sticks used in glue guns), it is even more popular in industrial applications as …

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Do You Know These Five Types of Hot-Melt Adhesive?

Choosing the right hot-melt adhesive for every use is critically important. The adhesive you need to accomplish a specific task can vary widely, so it’s important to know what adhesives are best suited for your application.

Evans Adhesive is proud to offer five different types of packaging hot melt adhesive in addition to our water-based …

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Benefits and Challenges of Hot Melt Adhesives in Industrial Environments

In industrial use, hot melt adhesives (HMAs) provide several advantages over solvent-based adhesives.  They include:

  • Volatile organic compounds that are reduced or eliminated
  • The drying or curing step is eliminated
  • Hot melt adhesives have long shelf life and usually can be disposed of without special precautions
  • HMAs do not lose thickness during solidifying; solvent-based …

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An up-close look at a new Metallocene option: ReliaSeal

Previous posts described the problems inherent with char-prone EVA-based adhesives, and outlined the benefits of using a metallocene-based adhesive instead.

Choosing to make the switch from traditional EVA-based hot-melt to metallocene-based hot-melt is a simple, straightforward, and cost-effective solution to eliminate the high cost of lost production time, and reduce the risk of packaging failure …

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A Range of Metallocene Hot-Melt Options Available

Hot-melt adhesives not only offer superior performance properties, but also provide manufacturers with a range of metallocene options and capabilities:

  • High-melt metallocene: Applied at 350 degrees Fahrenheit, this gives production operators a smooth-flowing, consistent, and trouble-free adhesive solution for a wide variety of product operating requirements;

Comparing Costs: Metallocene vs. EVA Hot Melt Adhesive

Previous posts outlined the advantages of metallocene-based adhesives compared to traditional EVA-based hot-melt adhesives, so now we look at costs.

But what about costs?

Metallocene-based hot-melt adhesive may initially cost more than EVA-based hot melt adhesive. However, the costs associated with problems from char-prone EVA can erase any initial cost savings you may have received.

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Key Benefits of Metallocene-Based Adhesives (Part 2)

Hot Melt adhesives based on metallocene boost productivity and economy in packaging operations.

The previous post covered several key advantages of these adhesives compared to traditional EVA-based hot-melt adhesives.

In addition to benefits like no (or very minimal) stringing, eliminating char or gel build up, low (or no) odor, and resistance to extreme heat …

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Key Benefits of Metallocene-Based Adhesives (Part 1)

Metallocene-based hot melt adhesives offer several key advantages compared to traditional EVA-based hot-melt adhesives:

  • Improved mileage: Because metallocene-based adhesives have a lower density than EVA-based adhesives, they can be applied at lower flow rates, often yielding up to 40% reduction in adhesive use compared to EVA.

One Solution to the Problem Of Char: Metallocene-Based Adhesives

In the past few years metallocene-based polymer hot-melt adhesives have become more widely available in the marketplace, and more affordable for use in the packaging field.

Metallocene-based hot melt offers superior performance and char-free operation, because the chemical composition means they are not subject to carbon buildup, gelling, or any other changes over extended high …

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Preventive Maintenance Can’t Solve Char Buildup

Preventive maintenance, which involves systematic monitoring and periodic flushing of the adhesive application system, can substantially reduce the incidence of charring and gelling and extend the life of applicator hoses and extrusion nozzles.

However, the unfortunate fact is that charring is an inherent problem with EVA-based adhesives (see previous posts). No matter how diligent the preventive …

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