Perfect binding
AssigneeSwift Adhesives Limited
InventorsRichard E. Tizzard, George C. Thomas
Life of this patent
Estimating the term…
Abstract
In two-short perfect binding of books, excellent results in terms of binding strengths, cold flow and cold crack properties, ink solvent resistance and thermal degradation susceptibility may be achieved using as a first adhesive a water based primer, e.g. a synthetic rubber latex emulsion, and as a second adhesive a hot-melt adhesive comprising a segmented monoalkene-vinyl acetate copolymer, e.g. a segmented ethylene-vinyl acetate copolymer optionally in admixture with at least one other ethylene-vinyl acetate copolymer.
Claims5
A two-shot adhesive comprising, separately
- (a) an aqueous primer emulsion;
- and
- (b) an adhesive composition, solid at ambient temperature, having a softening point in the range 65.degree. to 120.degree. C. and comprising (i) at least one segmented ethylene-vinyl acetate (EVA) copolymer, (ii) at least one tackifying resin, (iii) at least one antioxidant, and (iv) at least one other EVA, said segmented EVA constituting from 25 to 50% by weight of the EVA in said adhesive composition.
An adhesive composition, solid at ambient temperatures having a softening point in the range 65.degree. to 120.degree. C. and comprising (i) at least one segmented ethylene-vinyl acetate (EVA) copolymer, (ii) at least one tackifying resin, (iii) at least one antioxidant, and (iv) at least one other EVA, said segmented EVA constituting from 25 to 50% by weight of the EVA in said composition.
Dependencies are inferred from the claim text.