Hot melt adhesives are popular in many industrial sectors due to their environmental friendliness, safety and long shelf life.
These adhesives have to be heated before application and can be grouped into different categories, but each has its own benefits.
EVA-based hot melt adhesives
With a flexibility similar to rubber, EVA (ethylene vinyl acetate) is used in many hot melt adhesives. There are many advantages to using EVA copolymers in chemical formulations.
EVA-based adhesives are flexible enough to effectively resist cracking, even when exposed to UV rays. They are also durable, even under extreme temperatures.
As an integral part of the packaging industry, EVA hot melt adhesives also offer short opening and setting times. This feature allows packaging production lines to maintain high and efficient speeds.
APAO-based hot melt adhesives
Polyalphaolefin-based polymers (APAO) are excellent as a raw material for hot melt adhesives. APAO-based hot melt adhesives are used in a wide range of applications and truly excel in product assembly environments. They offer a number of advantages over other types of adhesives.
They are chemically inert and can adhere to non-polar substrates, shiny surfaces and a wide variety of fabrics. They set quickly and can be effective as a moisture and gas barrier. These adhesives also have excellent heat and cold resistance. Finally, APAO hot melt adhesives are highly resistant to UV rays.
Pressure sensitive hot melt adhesives (synthetic rubber)
Pressure sensitive adhesives (PSAs) are a distinct category of adhesives that adhere to a variety of surfaces without having to use anything more than pressure.
Pressure sensitive adhesives offer many advantages. Application can be easily automated and generally does not require complex equipment. They can save time when used in assembly because they don’t require long processing or curing times.
In addition, due to their immediate adhesion, manufacturing procedures are faster, resulting in significant time and labour savings. Pressure sensitive adhesives eliminate the need for screws, rivets, clips or drill holes, which prevents cracks and corrosion and improves the integrity and appearance of the final product. Finally, pressure sensitive adhesives can also promote thermal and acoustic insulation and limit vibrations.
Enjoy these advantages with Adfast’s Thermobond line of hot melt adhesives
Thermobond is a full range of 100% solid ethyl vinyl acetate, polyolefin or synthetic rubber (pressure sensitive) hot melt adhesives. Available in granular or solid block form, these products will provide you with the advantages mentioned above. Don’t hesitate to contact Adfast for more information!