Energy savings plus mechanical reinforcement and rheology control

Low Cost Polyvinyl Alcohol (PVOH) for Laminating Solid Fiber

Adhesives Formulation

Applicable Type

Waterborne Adhesives

Applicable Base Polymer

Polyvinyl Alcohols (PVOH)

Applicable Industrial Sectors

Buildings & constructions

Applicable Base Polymer Properties

Polyvinyl alcohol resins are water soluble. Non-toxic and biodegradable, polyvinyl alcohol (PVOH) adhesives are an excellent choice in food or general paper packaging as well as paperboard manufacturing. Developed to laminate or bind various paper and paperboard products, PVOH adhesives wet out fast to grab and bond quickly.

Often used in the manufacturing of composite cans, tube winding, corrugated board and corner guards for boxes, polyvinyl alcohol has exceptional film forming, emulsifying and bonding properties. More economical and easier to use than dextrin and other synthetics found in some paperboard manufacturing, PVOHs are sometimes filled with clay to create a firm core in cans, tubes and cardboard with impressive crush strength.

Typical Formulation Ingredients

Phase

Ingredient

Parts by weight

Polyvinyl alcohol (fully hydrolyzed)

xxxx

Starch

xxxx

Filler (ASP-200 aluminum silicate)

xxxx

Preservative

xxx

Water

xxxxxxxxxxxxx

Typical Properties

Properties

Improved wet tack in which the adhesive bond remains firm immediately after the bond has been established

Controlled degree of penetration

Tends to have thixotropic properties that eliminate stringiness and provide good consistency

Increased solids to extend adhesive and lower cost

Fast curing time

Strength to resist crushing

Low cost by virtue of its starch ingredient.

Processing

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Resulting Properties

The viscosity of this adhesive and its fast setting capability provide an excellent adhesive for solid fiber substrates. Waterborne PVOH adhesives have good flexibility and low temperature properties. PVOH adhesives are notable for their low degree of permeability. Polyvinyl alcohol is very resistant to oil, grease and solvents while maintaining high tensile strength and flexibility. These adhesives provide a low to medium performance relatively inexpensive adhesive that dries quickly.

In food packaging, polyvinyl alcohol adhesives are FDA approved as an adhesive for indirect food contact. PVOHs are tasteless, odorless and can be used on their own or blended with polyvinyl acetate emulsions for a faster set.

Source: Adhesives Formulary Handbook, NIIR Board, Asia Pacific Business Press, Inc., 2010, p. 141.

Low Cost Polyvinyl Alcohol (PVOH) for Laminating Solid Fiber

Applicable Base Polymer Properties

Typical Formulation Ingredients

Typical Properties

Processing

Resulting Properties

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