Typical Formulation Ingredients
Phase
Ingredient
Parts by weight
A
Vinyl chloride latex (UCAR AW-875, Dow Chemical)
A
Plasticizer (Flexol 4, Tetraethylene glycol di(2-ethylhexoate))
Typical Properties
Peel Strength – Vinyl/vinyl, lb/in
Resulting Properties
Waterborne Vinyl Chloride Heat Seal Coating Adhesive (A) for aluminum, paper, vinyl, and polyester substrates can be formulated with AW-875. For vinyl substrates, a formulation consisting simply of AW-875 and a coalescent is often satisfactory. For such surfaces as aluminum or polyester, the addition of a plasticizer or the alloying of AW-875 with a low Tg acrylic, such as UCAR Latex 173, greatly improves bond strength. The adhesive is coated on the substrate, dried, and later sealed with appropriate equipment, such as hot bar-type or dielectric sealers for vinyl substrates. A formulation by Dow Chemical.