Toughened hot melt adhesive composition for book casemaking

Details Toughened hot melt adhesive composition for book casemaking Toughened hot melt adhesive composition for book casemaking

B - Operations, Transporting

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154/141, 281/7,

B42C 9/00 (2006.01) B42D 1/00 (2006.01) B42D 1/04 (2006.01) B42D 3/02 (2006.01) C09J 5/00 (2006.01) C09J 153/02 (2006.01)

Patent

CA 1294204

ABSTRACT A case or cover for a hard bound book is formed by bonding the formed by bonding the cover boards to the book cover stock using a hot melt pressure sensitive adhesive composition comprising: a) 10 to 40% by weight of a substantially radial styrene-butadiene block copolymer, the copolymer having a styrene content greater than about 35% by weight, a modulus at 300% elongation of at least 4.5 MPa and a solution viscosity less than about 1000 cps; b) 20 to 65% by weight of a compatible tackifying resin; c) 0.1 to 4% by weight stabilizer; and d) the remainder (to 100%) comprising a plasticizing oil.

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