Patent EP0052938A1 successfully refreshed from Google Patents.
EP0052938A1
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EP
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Assignee: 3M Co
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Filing: 1981-10-20
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Granted: —
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Expires: 2001-10-20
Abstract
Abstract An imaging sheet manifold comprising a transparent polymeric sheet imageable in a copying machine and an opaque paper sheet adhered thereto. The adhesive bond adhering the sheets together has a peel strength less than the tear strength of the paper whereby, following imaging, the paper sheet can be peeled from the transparent sheet without leaving a visible paper residue.
Inventors
- 👤 Bruce W. Wittnebel
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 08:34
CPC Classifications
G; G03; G03G; G03G7/00; G03G7/0053
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
61 words
An imaging sheet manifold comprising, in combination, a) a transparent, polymeric sheet imageable in a copying machine; b) an opaque, paper sheet underlying and in register with said transparent sheet; c) an adhesive composition interposed between and bonding said paper sheet to said transparent sheet, the peel strength of said adhesive bond being less than the tear strength of said paper.
Claim 2
Dependent Claim
61 words
An imaging sheet manifold comprising, in combination, a) a transparent, polymeric sheet imageable in a copying machine; b) an opaque, paper sheet underlying and in register with said transparent sheet; c) an adhesive composition interposed between and bonding said paper sheet to said transparent sheet, the peel strength of said adhesive bond being less than the tear strength of said paper.
Claim 3
Dependent Claim
30 words
An imaging sheet manifold according to Claim 1 wherein said adhesive forms a continuous bond line having a length substantially equal to the length or width of said paper sheet.
Claim 4
Dependent Claim
16 words
An imaging sheet manifold according to Claim 1 wherein said adhesive comprises an organic polymeric adhesive.
Claim 5
Dependent Claim
30 words
An imaging sheet manifold according to Claim 3 wherein said organic polymeric adhesive is selected from the group consisting of poly(vinyl acetate), natural rubber, isooctyl acrylate/acrylimide copolymer and ethylene/vinylacetate copolymer.
Claim 6
Dependent Claim
44 words
An imaging sheet manifold according to Claim 3 wherein said adhesive comprises about 46 to 51 parts by weight poly(vinylacetate), 2 to 4 parts by weight diethyleneglycol dibenzoate, 2 to 3.5 parts by weight dipropylene glycol dibenzoate and sufficient water to form an emulsion.
Claim 7
Dependent Claim
48 words
An imaging sheet manifold according to Claim 3 wherein said adhesive comprises about 167parts by weight of 60% by weight solids natural rubber latex, 8 parts by weight terpene tackifying resin, 2.8 parts by weight plasticizer, 2.3 parts by weight ammonia and sufficient water to form an emulsion.
Claim 8
Dependent Claim
96 words
An imaging sheet manifold comprising, in combination, a) a transparent, polyester sheet imageable in a copying machine; b) an opaque sheet of bond paper underlying and in register with said transparent sheet; c) an organic, polymeric adhesive composition interposed between and bonding said paper sheet to said transparent sheet along a thin, continuous bond line proximate a common edge of said sheets, the peel strength of the adhesive bond being less than the tear strength of the paper whereby the paper sheet can be peeled from the polyester sheet without leaving a visible paper residue thereon.
Claim 9
Dependent Claim
96 words
An imaging sheet manifold comprising, in combination, a) a transparent, polyester sheet imageable in a copying machine; b) an opaque sheet of bond paper underlying and in register with said transparent sheet; c) an organic, polymeric adhesive composition interposed between and bonding said paper sheet to said transparent sheet along a thin, continuous bond line proximate a common edge of said sheets, the peel strength of the adhesive bond being less than the tear strength of the paper whereby the paper sheet can be peeled from the polyester sheet without leaving a visible paper residue thereon.
Claim 10
Dependent Claim
25 words
An imaging sheet manifold according to Claim 7 wherein the peel strength of the adhesive bond is less than about 550 grams per lineal centimeter.
Claim 11
Dependent Claim
49 words
An imaging sheet manifold according to Claim 7 wherein said adhesive comprises about 167 parts by weight of 60% by weight solids natural rubber latex 8 parts by weight terpene tackifying resin, 2.8 arts by weight plasticizer, 2.3 parts by weight ammonia and sufficient water to form an emulsion.
Claim 12
Dependent Claim
45 words
An imaging sheet manifold according to Claim 7 wherein said adhesive comprises about 46 to 51 parts by weight poly(vinylacetate), 2 to 4 parts by weight diethylene glycol dibenzoate, 2 to 3.5 parts by weight dipropylene glycol dibenzoate and sufficient water to form an emulsion.
References Cited (Backward Citations)
FR1363699A
Cited
GB1049783A
Cited
GB1145833A
Cited
DE1511282A1
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US3857731A
Cited
FR2299668A1
Cited
GB1536582A
Cited
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