Claims
- 1. A protected sheet laminate comprising
- (A) a substrate foil sheet;
- (B) a protective film laminated to said substrate sheet, said film having a release coating on one side and an electron beam cured adhesive coating on the other side, said other side being in adhesive contacting relationship with said substrate sheet, said protective film upon removal providing the substrate foil sheet with a substantially contaminate free surface, wherein the adhesive coating is a radiation-cured pressure-sensitive adhesive coating, and wherein the adhesive coating is an electron-beam-cured polyester pressure-sensitive adhesive.
- 2. A sheet as in claim 1 wherein said release coating is an electron beam cured polymeric release coating.
- 3. A sheet as in claim 1 wherein said substrate foil sheet is a copper foil laminate.
- 4. A sheet as claimed in claim 1 wherein the film is a thin polymeric sheet and said release coating is a radiation-cured polymeric release coating.
- 5. A sheet as claimed in claim 1 wherein an additional protective film is laminated along the surface of the substrate foil sheet opposite said contaminate-free surface.
- 6. A sheet as claimed in claim 1 wherein a dielectric substrate is laminated along the surface of the substrate foil sheet opposite said contaminate-free surface.
- 7. A protected-sheet laminate comprising
- (A) a substrate sheet, a surface of which is to be protected before use;
- (B) a protective film laminated on one side to said surface with an interposed adhesive layer having the property of permanently attaching to the film but releasably attaching to said surface of the substrate sheet;
- (C) and the protective film carrying on its other side a mold-release layer coated upon said other side; whereby peeling of the film from the said surface of the substrate sheet releases the attachment of said adhesive layer to said surface, providing the substrate sheet with a substantially contaminate-free surface, wherein the adhesive layer is a radiation-cured pressure-sensitive adhesive layer, and wherein the adhesive layer is an electron-beam-cured polyester pressure-sensitive adhesive.
- 8. A sheet as claimed in claim 7 wherein said mold release layer is an electron-beam cured polymeric release coating.
- 9. A sheet as claimed in claim 7 wherein the film is a thin polymeric sheet and said mold release layer is a radiation-cured polymeric coating.
- 10. A protected sheet laminate as claimed in claim 7 wherein the substrate sheet comprises a metal foil.
- 11. A protected-sheet laminate comprising
- (A) a substrate sheet, a surface of which is to be protected before use;
- (B) a protective film laminated on one side to said surface with an interposed adhesive layer having the property of permanently attaching to the film but releasably attaching to said surface of the substrate sheet;
- (C) and the protective film carrying on its other side a mold-release layer coated upon said other side; whereby peeling of the film from the said surface of the substrate sheet releases the attachment of said adhesive layer to said surface, providing the substrate sheet with a substantially contaminate-free surface, wherein the adhesive layer is a radiation-cured pressure-sensitive adhesive layer, and wherein the adhesive layer is selected from the group consisting of polyesters having reactive unsaturated polymeric chain terminations, and condensation products of teriphthalic acid and ethylene glycol.
Parent Case Info
This application is a continuation of Ser. No. 08/548,492, filed on Oct. 26, 1995, which is a continuation-in-part of U.S. application Ser. No. 08/278,871, filed on Jul. 08, 1994, for Sheets With High Temperature Stable Protection Coating. Both applications are now abandoned.
US Referenced Citations (19)
Foreign Referenced Citations (1)
Number |
Date |
Country |
26 26 039 |
Dec 1977 |
DEX |
Continuations (1)
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Number |
Date |
Country |
Parent |
548492 |
Oct 1995 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
278871 |
Jul 1994 |
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