Starch adhesive composition containing an oxidized waxy starch ester
AssigneeAnheuser-Busch, Incorporated
InventorsEdward M. Bovier, James A. Carter
Life of this patent
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Abstract
A gummed adhesive formulation is disclosed which contains as its major component a depolymerized waxy starch ester, preferably an oxidized waxy starch acetate or succinate. Quick tack properties imparted to tape by this formulation are superior to those resulting from an adhesive made from a thin boiling waxy starch and are comparable to those of animal glue at 11 lb/ream remoistening level.
Claims15
A composition suitable for use as a remoistening adhesive for gummed tape comprising an esterified oxidized waxy starch ester, a plasticizer, and water, said waxy starch ester having an acyl substitution of about 1.5% to about 2% and about 0.3% to about 0.5% carboxyl groups, said composition when applied to tape, dried, and remoistened having tack properties similar to those of an adhesive made from animal glue.
A method of preparing gummed tape having a remoistening adhesive adhered thereto comprising the steps of
- (a) forming an adhesive composition comprising about 40 to about 45% gelatinized oxidized waxy starch ester, said oxidized waxy starch ester having an acyl substitution of about 1.5% to about 2% and about 0.3% to about 0.5% carboxyl groups, about 49 to about 58% water and about 2 to about 6% plasticizer,
- (b) applying said adhesive composition to a tape strip, and
- (c) drying said coated tape, said adhesive when remoistened having tack properties similar to those of an adhesive made from animal glue.
Dependencies are inferred from the claim text.