Patent US4220490A successfully refreshed from Google Patents.
US4220490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a laminate with removable scored paper backing
Assignee: Morgan Adhesives Co
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Filing: 1979-03-05
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Granted: 1980-09-02
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Expires: 1999-03-05
Abstract
Abstract A method of making a laminate from a fibrous paper layer laminated to a face sheet and usually used in making labels, which method comprises obtaining a paper backing layer that has one face surface and a second surface which is porous, which paper layer preferably has a moisture content of between about 3.5 and 7.0 percent by weight, forming score lines in the second surface of the paper backing layer while supporting the layer from its said one face surface, then applying a liquid release layer to the face surface of the backing paper, drying; and, providing adhesive and face sheet layers on the release coated paper to complete the laminate.
Inventors
- 👤 Russell L. Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:24
CPC Classifications
B; B32; B32B; B32B7/00; B32B7/04; B32B7/06; B31; B31F; B31F5/00; B32B29/00; B32B29/002; B32B3/00; B32B3/26; B32B3/30; B32B7/12; G; G09; G09F; G09F3/00; G09F3/02; B32B2519/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1064
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
123 words
A method of making laminate for use in making a label or the like from a fibrous paper backing layer having one porous surface, which layer is laminated to a face sheet and comprising forming scored linear areas in the said surface of said paper backing layer by appreciable compaction of the paper to provide embrittlement in said scored linear areas while supporting the layer from its other surface, thereafter applying a liquid release layer to said other surface of said backing paper and drying such layer, applying a pressure sensitive adhesive layer to said release layer and drying, providing a moisture content in said backing layer of between 3.5 to 7.0% by weight, and laminating a face sheet to said adhesive layer.
Claim 2
Independent Claim
123 words
A method of making laminate for use in making a label or the like from a fibrous paper backing layer having one porous surface, which layer is laminated to a face sheet and comprising forming scored linear areas in the said surface of said paper backing layer by appreciable compaction of the paper to provide embrittlement in said scored linear areas while supporting the layer from its other surface, thereafter applying a liquid release layer to said other surface of said backing paper and drying such layer, applying a pressure sensitive adhesive layer to said release layer and drying, providing a moisture content in said backing layer of between 3.5 to 7.0% by weight, and laminating a face sheet to said adhesive layer.
Claim 3
Dependent Claim
47 words
A method of making a laminate as in claim 1 and including applying a release layer to said other surface so as to cover any ridges formed in such surface by score lines and obtaining a continuous paper layer-release layer of substantially uniform thickness in the laminate.
Claim 4
Dependent Claim
29 words
A method of making a laminate as in claim 1 and comprising forming the backing layer from a relatively porous machine glazed paper having a smooth said other surface.
Claim 5
Independent Claim
116 words
A method of making laminate for use in making a label or the like from a fibrous paper backing layer laminated to a printable face sheet and comprising obtaining a paper backing layer having one face surface and a second surface that is porous and uncoated, applying a rolling pressure on the second surface of said paper layer to form score lines in the second surface of said paper backing layer by compaction of the paper to provide embrittled linear areas, thereafter applying a liquid release layer to said face surface of said backing paper and drying such layer, and laminating an adhesive layer and a face sheet to said release layer to form a laminate.
Claim 6
Independent Claim
116 words
A method of making laminate for use in making a label or the like from a fibrous paper backing layer laminated to a printable face sheet and comprising obtaining a paper backing layer having one face surface and a second surface that is porous and uncoated, applying a rolling pressure on the second surface of said paper layer to form score lines in the second surface of said paper backing layer by compaction of the paper to provide embrittled linear areas, thereafter applying a liquid release layer to said face surface of said backing paper and drying such layer, and laminating an adhesive layer and a face sheet to said release layer to form a laminate.
Claim 7
Dependent Claim
46 words
A method as in claim 4 where said paper layer is provided with a moisture content of between 3.5 to 7.0% by weight, and said paper layer is a machine glazed paper that is porous and uncompacted but has a clay coating on said face surface.
Claim 8
Dependent Claim
26 words
A method as in claim 4 where said paper layer is biased against its one face surface when rolling pressure is applied to its second surface.
References Cited (Backward Citations)
US3719548A
Cited
US3859157A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-02 | 1984-03-03 | 1984-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-02 | 1988-03-03 | 1988-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-02 | 1992-03-03 | 1992-09-02 | $7700.00 | Window Closed / Lapsed |