Energy savings plus mechanical reinforcement and rheology control

Waterborne Acrylic PSA for All-Temperature Labels

Adhesives Formulation

Applicable Type

Waterborne Adhesives

Applicable Base Polymer

Acrylics & Acrylic Copolymers

Applicable Industrial Sectors

Labels / Signs / Decals

Applicable Base Polymer Properties

Acrylic emulsions offer a low cost adhesive with moderate performance properties. They are tremendously versatile due to the large number of different monomers and resins available. Acrylic waterborne laminating adhesives can provide bonds ranging from flexible and tough to hard and rigid depending on the formulation. Acrylic adhesives inherently have very good UV and oxidative stability and are generally preferred for outdoor applications.

Typical Formulation Ingredients

Ingredient

Parts by weight

Acronal A220 acrylic emulsion (60% solids)

xxx

Wetting agent

xxxxx

Defoamer (e.g., Foamstar A10, Cognis)

xxxxxxxx

Biocide

xxxxxxxxxxxxxxxxxxxxxxxxx

Tackifiying agent (Permatac H 7710, Akzo Nobel)

xxx

Plasticizer (e.g., phthalate and adipate types)

Neutralizing agent (e.g., 10% NaOH)

xxx

Rheology modifier (e.g., Latekoll, BASF)

xxxxx

Water

xxxxxxxxxxxxxxxx

(Source: BASF)

Typical Properties

Properties

180° peel strength on HDPE, lb/in

xxx

180° peel strength on Glad PE film, lb / in

xxx

180° peel strength on stainless steel, lb / in

xxx

180° peel strength on corrugated box, lb / in

xxx

Loop tack on stainless steel, lb/in

xxx

Loop tack on HDPE, lb/in

xxx

Loop tack on corrugated box, lb/in

xxx

Static shear strength, 0.5”x 0.5”, 0.5kg, 30 min dwell, min

xxx

Processing

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Resulting Properties

The table above provides a typical starting formulation for a general purpose pressure sensitive acrylic adhesive. It is typically used for labels made of polymeric film that are used in packaging applications.

Tips and Tricks

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