US4725468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of co-extrusion of different coating materials, including adhesive coating with intermittent non-adhering sections, and products produced thereby
Assignee: SOUTH SHORE BANK
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Filing: 1986-02-06
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Granted: 1988-02-16
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Expires: 2006-02-06
Abstract
Abstract A method of and apparatus for co-extruding upon a first continuous coating adhered to a substrate band (such as a pressure-sensitive adhesive), periodic top coat sections of coating material of different characteristics (such as non-stick properties), as for such purposes as providing laminating adhesive strips in desired regions only, as for use in diaper laminates and the like.
Inventors
- 👤 Frederic S. McIntyre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:33
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/56; A61F13/58; C; C09; C09J; C09J7/00; C09J7/20; C09J2301/00; C09J2301/20; C09J2301/204; Y; Y10; Y10T; Y10T428/00; Y10T428/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
93 words
A method of rendering predetermined portions of a continuous pressure-sensitive hot melt adhesive layer non-adhering, that comprises, continuously extruding hot-melt pressure-sensitive adhesive at a predetermined region as a continuous layer upon a band being drawn past said predetermined region, periodically and intermittently co-extruding at a second region just beyond said predetermined region a hot-melt non-adhering material as discrete, spaced, top layer sections permanently attached to the continuous hot melt adhesive layer, and timing the periodic intermittent co-extrusion to select those predetermined portions of the continuous hot-melt adhesive layer where non-stick characteristics are desired.
Claim 2
Independent Claim
93 words
A method of rendering predetermined portions of a continuous pressure-sensitive hot melt adhesive layer non-adhering, that comprises, continuously extruding hot-melt pressure-sensitive adhesive at a predetermined region as a continuous layer upon a band being drawn past said predetermined region, periodically and intermittently co-extruding at a second region just beyond said predetermined region a hot-melt non-adhering material as discrete, spaced, top layer sections permanently attached to the continuous hot melt adhesive layer, and timing the periodic intermittent co-extrusion to select those predetermined portions of the continuous hot-melt adhesive layer where non-stick characteristics are desired.
Claim 3
Dependent Claim
44 words
An elastic band for diaper lamination and similar applications having a continuous adhered coating layer of pressure sensitive adhesive terminated at its end sections with discrete, spaced top coating sections of non-stick coating layers coextruded upon and permanently attached to the continuous adhesive layer.
Claim 4
Dependent Claim
44 words
An elastic band for diaper lamination and similar applications having a continuous adhered coating layer of pressure sensitive adhesive terminated at its end sections with discrete, spaced top coating sections of non-stick coating layers coextruded upon and permanently attached to the continuous adhesive layer.
Claim 5
Independent Claim
85 words
A method of providing an elastic band for diaper lamination and similar applications with a continuous adhered coating of adhesive and spaced non-adhering regions, comprising extruding a continuous layer of adhesive material upon a band being drawn past a predetermined location, and periodically and intermittently co-extruding upon said continuous layer, at a second location just beyond said predetermined location, discrete, spaced, top layer sections of a material that is permanently attached to the material of said continuous layer and that is non-adhering to other materials.
Claim 6
Independent Claim
85 words
A method of providing an elastic band for diaper lamination and similar applications with a continuous adhered coating of adhesive and spaced non-adhering regions, comprising extruding a continuous layer of adhesive material upon a band being drawn past a predetermined location, and periodically and intermittently co-extruding upon said continuous layer, at a second location just beyond said predetermined location, discrete, spaced, top layer sections of a material that is permanently attached to the material of said continuous layer and that is non-adhering to other materials.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-02-15 | 1991-08-17 | 1992-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-15 | 1995-08-17 | 1996-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-15 | 1999-08-17 | 2000-02-16 | $7700.00 | Window Closed / Lapsed |