Energy savings plus mechanical reinforcement and rheology control

Low-Cost Vinyl Acetate Acrylic Waterborne Flexible Packaging Adhesive (B) by Dow

Adhesives Formulation | Supplied by Dow Corning

Applicable Type

Waterborne Adhesives

Applicable Base Polymer

Vinyl Acrylics & Vinyl Acrylic Copolymers (VAC) , Vinyl Acetate Ethylene Copolymers (VAE)

Applicable Industrial Sectors

Papers & Packagings , Bags & sacks , Carton closure (packaging user)

Applicable Base Polymer Properties

Vinyl acetate acrylic copolymer emulsion is designed for use in formulating high performance adhesives for the packaging industry. It provides a high level of adhesion to a variety of difficult-to-bond surfaces including polyolefin films. These copolymers deliver superior adhesion without the need for chlorinated solvents.

Typical Formulation Ingredients

Phase

Ingredient

Parts by weight

Vinyl acetate acrylic copolymer (Rovace™ RP-2931, Dow Chemical)

Plasticizer – Dibenzoate (Benzoflex™ 50, Eastman Chemical)

Filler – Clay (ASP-400)

Typical Properties

Properties

Viscosity at 22°C, cps

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Approximate solids content, %

Clarity

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Water resistance

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Glass transition temperature, °C

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Adhesion, gms/in Aluminum foil

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Adhesion, gms/in Polypropylene (treated)

xxx

Adhesion, gms/in Polypropylene (untreated)

xxx

Processing

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Resulting Properties

The low viscosity of the water emulsion and its fast-setting capability provide an excellent adhesive for sealing of corrugated boxes, cartons, and paper bags. The table above provides a formulation for an adhesive that will have a fast set and good penetration into the porous substrates. The latex adhesive dries to a somewhat rubbery film by virtue of the flexible nature of the copolymer. The adhesive has good resistance to water and good adhesion to most substrates.

Tips and Tricks

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