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Adhesives Ingredients
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Adhesives Ingredients

EVA Hot-melt Glue Stick Adhesive

Adhesives Formulation

Applicable Type
Hot-melt Adhesives
Applicable Base Polymer
Ethylene Vinyl Acetates (EVA)
Applicable Industrial Sectors
Electrical & Electronic Bonding , Papers & Packagings

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 the bookbinding operations. EVA adhesives demonstrate strong adhesive properties, but most importantly they set quickly by virtue of their hot melt character.

Typical Formulation Ingredients

Ingredient
Parts by weight
EVA polymer (25% VA, MI=400) 
xxxx 
EVA polymer (25% VA, MI=19) 
xxxx 
Styrenated terpene resin 
xxxx 
CHDM dibenzoate (Benzoflex 352, Eastman) 
xxxx 
Antioxidant 
xxx 
(Source: Streeter, B.E., “Plasticizers for Solvents and Hot Melt Adhesives”, Velsicol Chemical Corp.) 
 

Typical Properties

Properties
Shear adhesion failure temperature, °C 
xx 
Open time, secs 
xxx 
Viscosity, mm cps @ 350°F 
xxxx 
Adhesion to glass, paper 
xxxxxxxxx 
Adhesion to steel, concrete, PVC, wood 
xxxx 

Processing

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Resulting Properties

A starting formulation for a general purpose EVA hot melt stick formulation is given in the table above. EVA resins are considered to be relatively safe to use in food applications. Certain adhesive manufacturers offer EVA resins that are approved for indirect food contact (FDA 21 CFR.175) applications. This allows the adhesive to be used not only in food packaging but also in food cooking and other food preparation applications.

Tips and Tricks

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