Fanfolded tablet of a web which is separable into sheets each bearing a pressure-sensitive adhesive pattern
AssigneeMinnesota Mining and Manufacturing Company
InventorTimothy A. Mertens
Life of this patent
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Abstract
A writing tablet is formed from a substantially continuous, fanfolded web of uniform width having transverse paths of weakness, along which the web can be torn evenly into individual sheets of uniform size. One face of the web bears a series of pressure-sensitive adhesive patterns, one pattern on each sheet, which pattern contacts the adhesive-bearing face of an adjacent sheet only in nonadhesive areas. The pressure-sensitive adhesive and nonadhesive areas are so prepared that each sheet can be cleanly peeled from the adjacent sheet without adhesive transfer, even after prolonged storage. After the tablet has been formed, its sheets can be conveniently and efficiently imprinted in a printer or copier and then returned to tablet form.
Claims20
A tablet comprising a substantially continuous, fanfolded web of uniform width that is periodically formed with transverse paths of weakness along which the web can be torn evenly into individual sheets of uniform size, one face of the web bearing a series of pressure-sensitive adhesive patterns, there being one pattern on each sheet which contacts and releasably adheres to the adhesive-bearing face of an adjacent sheet only in nonadhesive areas that are recessed with respect to the pressure-sensitive adhesive patterns, the pressure-sensitive adhesive and the nonadhesive areas being such that each sheet can be cleanly peeled from the tablet without adhesive transfer, even after prolonged storage.
Dependencies are inferred from the claim text.