B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
117/26, 154/49
B32B 7/06 (2006.01) B42D 5/00 (2006.01) C09J 7/02 (2006.01) G09F 3/02 (2006.01)
Patent
CA 2009157
Abstract of the Disclosure A stack of aligned sheets, each of which sheets includes a backing, a coating of pressure sensitive adhesive on a lower surface of the backing by which the sheet is adhered to the sheet beneath it in the stack, which coating extends along and within at least 12.5 mm of all of the edges of the backing, release means providing a first adhesion zone between adjacent sheets in the stack and adjacent one of the edges of the sheet for providing a sufficiently low release force between the adhesive coating and the upper surface of the adjacent sheet in the stack to afford, when the sheet is the uppermost sheet in the stack, easy initiation of peeling of the sheet from the adjacent sheet in the stack, and attachment means providing a second adhesion zone between adjacent sheets in the stack for providing a sufficiently high release force that is higher than said low release force in the first adhesion zone to firmly adhere adjacent sheets in the stack together and thereby hold the stack of sheets together during handling, while affording continued peeling away of the uppermost sheet in the stack after initiating of such peeling along the first adhesion zone.
Minnesota Mining And Manufacturing Company
Smart & Biggar
LandOfFree
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