Energy savings plus mechanical reinforcement and rheology control

Mineral Filled Ethylene Vinyl Acetate (EVA) HMA for Carpet Backing

Adhesives Formulation

Applicable Type

Hot-melt Adhesives

Applicable Base Polymer

Ethylene Vinyl Acetates (EVA)

Applicable Industrial Sectors

Carpet backing

Applicable Base Polymer Properties

Hot melt EVAs are made from a combination of solid thermoplastic copolymers, tackifying resins, and waxes that function with the right viscosity when applied in many operations. EVA adhesives demonstrate strong adhesive properties, but most importantly they set quickly by virtue of their hot melt character.

Typical Formulation Ingredients

Phase

Ingredient

Parts by weight

Ethylene vinyl acetate copolymer, vinyl acetate content 25%, melt index 17-21

xxxx

Paraffin wax, 63°C mp

xxx

Low molecular weight (2000) polyethylene, density 0.96 g/cm2, ring and ball softening point 125°C

xxx

Tackifier hydrocarbon resin, 60°C ring and ball softening point, viscosity of 1 poise at 135°C

xxxx

Butylated hydroxytoluene antioxidant

xxx

Calcium carbonate filler

xxxx

Typical Properties

Properties

Brookfield viscosity at 155°C, cps

xxxxxx

Ring and ball softening point, °C

xxx

Tensile strength, psi

xxx

Elongation, %

xxx

Processing

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Resulting Properties

Mineral Filled Ethylene Vinyl Acetate (EVA) HMA for Carpet Backing is for a high quality hot melt carpet backsize composition having a high tensile elongation which results in tufted carpets having improved tuft bind. It is also claimed to have the following characteristics:

Light color and low odor
Excellent stability
Very compatible formulation
High Strength

The source of formulation is US Patent 3,9145,489

Tips and Tricks

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