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What is a Hot Melt Adhesive?

A hot melt adhesive (HMA) is a 100% solids bonding agent applied in the molten state that forms bonds when cooling.

Its formulation always includes three main raw materials:

  • Polymers such as ethylene, copolymers etc. They are the backbone and provide cohesive or internal strength. They dictate the level of performance of temperature considerations and toughness, durability, and flexibility of the bond.
  • Natural or synthetic tackifying resins.
  • Plasticizers (mostly waxes and paraffin). These enable the adhesive to adapt to different open times and setting times.

In particular, rheology plays an important role in determining how they will perform for a specific application. Rheology relates to how well the adhesive will flow, wet out and adhere to a certain substrate. For example, elasticity, viscosity and modulus are related to its rheology. 
 

  • Elasticity is the adhesive’s ability to store energy and use that energy to retain original shape when moved. 
  • Viscosity is the adhesive’s resistance to flow. 
  • Modulus is the adhesive’s flexibility levels after it sets. 

What are the benefits of EVA & Polyolefin Hot Melt Adhesives?

Among the many advantages brought by Ethylene Vinyl Acetate (EVA) & Polyolefin (PO) Hot Melt Adhesives, we can mention the following features:

  • Reduce environmental impacts by replacing solvent-based adhesives, compatibility with bio-based and renewable materials, recyclable, and compostable adhesives, long shelf life, lower adhesive consumption, etc.
  • Non Hazardous/Comply with strict regulations by minimizing emissions of volatile organic compounds (VOCs) and compatibility with food contact.
  • Enhance workability with low odor and no VOCs, enabling HMA to be sprayed as easily as a solvent-based adhesive.
  • Ease of stop-start operations for improved lean manufacturing.
  • Enhances design possibilities thanks to compatibility with various substrates.
  • Moisture free, reduces bacteria & virus contamination, can be food grade, clean process, compatible with pharma white rooms.
  • Improve productivity thanks to fast setting, low maintenance.

CONTACT AN EXPERT

What are Bostik's innovations about EVA & Polyolefin Hot Melt Adhesives?

Bostik designs sustainable Hot Melt Adhesives that favor production efficiency, safety, and sustainability. We have a high diversity of materials and colors. Here are some of our latest innovations: 

  • The Case and Carton Sealing Hot Melt Adhesive for High-Temperature Applications

Kizen HEAT is a sustainable hot melt adhesive solution for advanced high-temperature packaging applications. It is a water-white product designed for hot-filling applications, high-temperature storage of cases, carton sealing, and tray erecting. It resists thermal shock and temperature variations from 0°C to 80°C.

FEATURED PRODUCT: KIZEN HEAT

  • Compostable Adhesive for paper bags and industrial snacks (in the US)

THERMOGRIP 43298 hot melt adhesive can be used in paper cups and food services for to-go packaging applications. This adhesive passes industrial compostable standards as detailed in ASTM 6400-12 and is certified as meeting these criteria by BPI (Biodegradable Products Institute). These tests indicate Thermogrip 43298 to be a suitable adhesive component for compostable articles. 

FEATURED PRODUCT: THERMOGRIP 43298

Contact us if you want to know more about our hot melt adhesive innovations.

What are the main applications of EVA & Polyolefin Hot Melt Adhesives?

Consumer Goods

For Consumer Goods, EVA and Polyolefin Hot Melt Adhesives, including Metallocenes, are appreciated for their multi-purpose, fast setting time, hot and cold temperature resistance, food safety compliance, and compatibility with difficult substrates. Hot Melt Adhesives improve efficiency and speed-up production by forming a bond quickly without needing time to cure or dry. They are mainly used for carton closing, box closing, wrap, trays, etc.

FEATURED PRODUCT: KIZEN

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Why choose Kizen Force adhesive instead of conventional EVA and Metallocene for Case & Carton sealing?

Kizen Force adhesive provides similar performance as metallocene near the cost of EVA and can be foamed. The comparison of Kizen Force, EVA, and metallocene performances are given in the opposite graph.

 

Kizen adhesives also allow you to make considerable savings on your adhesive consumption. Calculate your savings.

Pulp & Paper

Bostik EVA and Polyolefins Hot Melt Adhesives, including Metallocenes adhesives, reduce environmental impact and increase operational efficiencies, design opportunities, performances, and quality. 

THERMOGRIP 43298 is a high-performing compostable hot melt adhesive used for various paper and fiberboard packaging.

FEATURED PRODUCT: THERMOGRIP 43298

Assembly

In Assembly, Hot Melt EVA & Polyolefins Adhesives can be used in filters, foams & mattresses, bottle caps, and cosmetics. Bostik provides both sprayed and corded adhesives to adapt to your needs.

Our amorphous polyolefin hot melt adhesive, XT19067/1, is versatile for all mattress applications. It has excellent cohesion and a long open time.

FEATURED PRODUCT: XT19067/1

 

Building and Construction

Hot Melt Adhesives are mainly used in glass wool for roofing and woodworking (edge bonding and soft forming) in building and construction. These adhesives are suitable for a wide variety of substrates. Their non-VOC properties make them safe for use in buildings.

The Bostik Hot Melt EVA ARDAL range is designed for high-performance bonding to wood. ARDAL T 228M is a hot melt adhesive for profile wrapping. It has a very short open time and is applied by slot.

FEATURED PRODUCT: ARDAL T 8228M

Automotive

For the automotive and transportation industries, we offer APAO (Amorphous Poly-Alpha-Olefins) Hot Melt Adhesives. They are appreciated for their foamable compatibility, high heat resistance, UV resistance, and optimized viscosity for fast line speed, making them ideal for many applications in automotive.

TRESOL FP520 is a sprayable adhesive, with very high initial cohesion with long open time, for automotive, foam and textile applications.

FEATURED PRODUCT: TRESOL FP520

Featured Poducts: HMEVA and HMPO Adhesives for Advanced Packaging and Durable Goods

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H 9446
  • Product
H 9446 is a polyolefin-based Hot Melt adhesive used for both the assembly and the automotive markets. The product is specifically recommended for PP ...
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Kizen® ICE
  • Product

Based on a unique water-white technology, Kizen® ICE is part of Kizen, the next generation hot melt adhesives for case and carton ...

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Kizen® HEAT
  • Product

The newest addition to the Kizen product line, Kizen HEAT serves as the perfect complement to Kizen FORCE and Kizen ICE. Ideal for hot fill ...

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Kizen® Force
  • Product
Kizen® Force is a hot melt adhesive based on a unique water-white technology dedicated to case and carton sealing and tray forming, and particularly ...
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TEF 266 M
  • Product
TEF 266 M is a 100% solid hot melt adhesive designed for cases and carton sealing, and tray forming.
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XT 19067/1
  • Product
XT 19067/1 is a hot melt adhesive used in assembly for foam & mattress.
Do you need an expert to find the best EVA and Polyolefin Hot Melt Adhesive for your application, receive technical information or samples?

Contact us!