C - Chemistry – Metallurgy – 09 – J
Patent
C - Chemistry, Metallurgy
09
J
400/1115, 117/30
C09J 121/00 (2006.01) B42D 15/08 (2006.01) C09J 7/04 (2006.01) C09J 103/02 (2006.01) C09J 121/02 (2006.01) C09J 151/04 (2006.01)
Patent
CA 2038993
The adhesive composition of the invention exhibits an adequately controlled adhesive bonding strength when paper sheets coated therewith are bonded together to be adaptable to subsequent separation of the bonded sheets of paper by peeling. The essential ingredients of the adhesive compo- sition include: (a) a rubber latex; (b) a silica gel powder having a specified average particle diameter; and (c) a starch, preferably, having a specified particle diameter, e.g. wheat starch, each in a specified weight proportion. In addition to the good balance between the reliability of the adhesive bonding and subsequent peelability, the paper sheet coated with the adhesive composition is prevented from a decrease in the adhesiveness even when the surface is contaminated with a silicone oil and from the troubles due to blocking when adhesive-coated sheets are stacked one on the other with the adhesive-coated surfaces in direct contact with each other.
Kirby Eades Gale Baker
Ltd. Toppan Moore Co.
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