Toughened hot melt adhesive composition for book hinge joint

Details Toughened hot melt adhesive composition for book hinge joint Toughened hot melt adhesive composition for book hinge joint

B - Operations, Transporting

42

C

11/3.1, 154/72.1

B42C 9/00 (2006.01)

Patent

CA 1336950

A process for the formation of the hinge joints on bound book blocks using a toughened hot melt pressure sensitive adhesive 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 modolus 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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