Patent US5084354A successfully refreshed from Google Patents.
US5084354A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized paper substrate for release liners
Assignee: Loparex Inc
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Filing: 1990-12-11
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Granted: 1992-01-28
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Expires: 2010-12-11
Abstract
Abstract The invention is a method of manufacturing a substrate, and particularly of manufacturing a release paper. The method comprises coating a release paper base with a primer coat, and curing the primer coat. The cured primer coat is then overlayed with a heat-curable or an ultraviolet-curable silicone coating which is, in turn, cured with heat or ultraviolet light. A product manufactured in accordance with this method enables a facing adhered to this release paper to be removed relatively easily from that release paper.
Inventors
- 👤 George Krankkala
- 👤 John Bachman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:08
CPC Classifications
D; D21; D21H; D21H27/00; D21H27/001; D21H19/00; D21H19/80; D21H19/82; D21H19/824; D21H19/10; D21H19/14; D21H19/24; D21H19/32; D21H25/00; D21H25/04; D21H25/06; Y; Y10; Y10T; Y10T428/00; Y10T428/14; Y10T428/1476; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31652; Y10T428/31663; Y10T428/31855; Y10T428/3188; Y10T428/31895
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
51 words
An ultraviolet cured release paper base comprising: a. a paper substrate; b. an ultraviolet cured primer coat, said primer coat primarily comprising an aromatic epoxy; c. an ultraviolet-curable silicone coating; wherein an adhesively-secured facing is removable from said ultraviolet-cured release paper base with a force not exceeding 35 grams per inch.
Claim 2
Dependent Claim
51 words
An ultraviolet cured release paper base comprising: a. a paper substrate; b. an ultraviolet cured primer coat, said primer coat primarily comprising an aromatic epoxy; c. an ultraviolet-curable silicone coating; wherein an adhesively-secured facing is removable from said ultraviolet-cured release paper base with a force not exceeding 35 grams per inch.
Claim 3
Dependent Claim
49 words
A release paper base comprising: a. a paper substrate; b. an ultraviolet cured primer coat, said primer coat primarily comprising an aromatic epoxy; and c. an ultraviolet-curable silicone coating; wherein an adhesively-secured facing is removable from said release paper base with a force not exceeding 35 grams per inch.
Claim 4
Dependent Claim
49 words
A release paper base comprising: a. a paper substrate; b. an ultraviolet cured primer coat, said primer coat primarily comprising an aromatic epoxy; and c. an ultraviolet-curable silicone coating; wherein an adhesively-secured facing is removable from said release paper base with a force not exceeding 35 grams per inch.
Claim 5
Dependent Claim
27 words
The release paper base of claim 2, wherein said primer coat comprises approximately 75 parts of an epoxy, 25 parts of a reactive diluent, and a surfactant.
Claim 6
Dependent Claim
51 words
A release paper base comprising: a. a paper substrate; b. an ultraviolet cured primer coat, said primer coat comprising at least approximately 75% aromatic epoxy; and c. an ultraviolet-curable silicone coating; wherein an adhesively-secured facing is removable from said release paper base with a force not exceeding 35 grams per inch.
Claim 7
Dependent Claim
51 words
A release paper base comprising: a. a paper substrate; b. an ultraviolet cured primer coat, said primer coat comprising at least approximately 75% aromatic epoxy; and c. an ultraviolet-curable silicone coating; wherein an adhesively-secured facing is removable from said release paper base with a force not exceeding 35 grams per inch.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-01-27 | 1995-07-29 | 1996-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-27 | 1999-07-29 | 2000-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-27 | 2003-07-29 | 2004-01-28 | $7700.00 | Window Closed / Lapsed |