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US 4,702,496 AGranted
Book binding process involving primer adhesive containing starch
AssigneeH. B. Fuller Company
InventorRobert M. Hume, III
Life of this patent
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Abstract
The present invention relates to an improved book-binding process comprising the use of an aqueous primer adhesive composition containing ungelatinized starch. A layer of the primer adhesive is coalesced to a resilient hinge by the application of a hot-covering adhesive without the need for an intermediate drying step. The coalesced film of primer adhesive provides a suitable underlying substrate for the adherent covering adhesive which binds the cover stock to the finished book.
Claims17
A continuous book-binding process comprising:
- (a) roughing and cutting an assembly of a sufficient number of signatures resulting in a signature assembly having a high surface area location for the application of adhesives;
- (b) applying to the high surface area location an aqueous primer adhesive;
- (c) applying a hot coating of an adherent covering adhesive to the aqueous primer adhesive coating;
- and
- (d) contacting the adherent coating with a book cover, wherein the primer adhesive contains an adhesive latex and an amount of ungelatinized granular starch which complexes a major portion of the latex water and coalesces the primer adhesive to form a flexible film during step (c) without the application of external heat in a step between steps (b) and (c) which complexes essentially all of the primer water.
2 more elements
Dependencies are inferred from the claim text.