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US 6,207,248 B1Granted
Bookbinding applications utilizing warm melt polyurethanes
AssigneeH. B. Fuller Licensing & Financing, Inc.
InventorsKang Yang, David B. Malcolm, Michelle B. Acquaye, Kevin J. Reid, John M. Zimmel
Life of this patent
Estimating the term…
Abstract
Reactive hot melt polyurethane adhesives are useful in the graphic arts area, and in particular, for bookbinding applications such as casemaking, casing-in, gluing-off or thread-securing, facing, slip cases, lining-up, tightbacking, and bonding sides and joints; and for puzzle and gameboard lamination.
Claims7
A book comprising:
- a) a book block having end sheets bonded on said book block:
- and
- b) a book cover;
- wherein said end sheets of the book block are completely covered by said book cover and are bonded to the book cover with a reactive warm melt polyurethane adhesive, said polyurethane adhesive comprises the reaction product of at least one polyfunctional isocyanate component and at least one polymeric polyol component.
1 more element
Dependencies are inferred from the claim text.