Rounding of hard cover books

Books – strips – and leaves – Book – element thereof – or accessory therefor

Patent

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Details

281 211, 281 36, 281 51, 412 8, 412 25, 156908, B42D 100, B42B 906, B42L 502

Patent

active

049078224

ABSTRACT:
Rounded, hard covered books are bound using a specific class of low viscosity reactive urethane hot melt adhesive compositions which provide a coating which will remain sufficiently flexible and thermoplastic so as to be capable of accepting and maintaining the rounded configuration even after extended periods of storage.

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