EP0348310A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Abrasion-resistant protective laminates
Assignee: Eastman Kodak Co
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Filing: 1989-06-12
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Granted: —
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Expires: 2009-06-12
Abstract
Abstract Multi-layer sheet materials useful as protective laminates for application to substrates, such as photographic elements, which require the protection of an abrasion-resistant material, are comprised of a strippable carrier (10), an abrasion-resistant layer (12) which overlies the carrier, a structural interlayer (14) which overlies the abrasion-resistant layer, and an adhesive layer (16) which overlies the structural interlayer. The structural interlayer is very thin in relation to the thickness of the carrier, and is permanently bonded to one surface of the abrasion-resistant layer, whereas the carrier is releasably bonded to the other surface of the abrasion-resistant layer so as to permit it to be stripped away after it has served its purpose. A process for manufacturing the multi-layer sheet material comprises the steps of advancing the carrier in web form through a coating station at which it is coated with a layer of liquid composition that is curable to a solid form; laminating the structural interlayer to the coated surface of the carrier; curing the liquid layer in situ to a solid form to thereby form an abrasion-resistant layer; and applying an adhesive layer over the surface of the structural interlayer.
Inventors
- 👤 Thomas M. C/O Eastman Kodak Company Smith
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 20:15
CPC Classifications
G; G03; G03C; G03C11/00; G03C11/08; B; B32; B32B; B32B7/00; B32B7/04; B32B7/06; B32B27/00; B32B27/06; B32B27/08; B32B27/36; B32B7/12; B32B2307/00; B32B2307/20; B32B2307/21; B32B2307/50; B32B2307/554; B32B2367/00
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
125 words
A multi-layer sheet material that is useful as a protective laminate; characterized in that said sheet material comprises: (1) a strippable carrier comprised of a flexible sheet material; (2) an abrasion-resistant layer which overlies said carrier and is releasably bonded thereto; (3) a thin structural interlayer of flexible sheet material which overlies said abrasion-resistant layer and is permanently bonded thereto, said interlayer being very thin in relation to the thickness of said carrier; and (4) an adhesive layer overlying said interlayer; said multi-layer sheet material being adapted to be bonded to a substrate by means of said adhesive layer and said carrier being adapted to be stripped from said abrasion-resistant layer to thereby provide a protective laminate on said substrate which has an abrasion-resistant surface.
Claim 2
Dependent Claim
125 words
A multi-layer sheet material that is useful as a protective laminate; characterized in that said sheet material comprises: (1) a strippable carrier comprised of a flexible sheet material; (2) an abrasion-resistant layer which overlies said carrier and is releasably bonded thereto; (3) a thin structural interlayer of flexible sheet material which overlies said abrasion-resistant layer and is permanently bonded thereto, said interlayer being very thin in relation to the thickness of said carrier; and (4) an adhesive layer overlying said interlayer; said multi-layer sheet material being adapted to be bonded to a substrate by means of said adhesive layer and said carrier being adapted to be stripped from said abrasion-resistant layer to thereby provide a protective laminate on said substrate which has an abrasion-resistant surface.
Claim 3
Dependent Claim
18 words
A multi-layer sheet material as claimed in claim 1 additionally comprising a release sheet overlying said adhesive layer.
Claim 4
Dependent Claim
25 words
A multi-layer sheet material as claimed in claim 1 additionally comprising a release coating on the side of said carrier opposite to said abrasion-resistant coating.
Claim 5
Dependent Claim
22 words
A multi-layer sheet material as claimed in claim 1 additionally comprising a release coating interposed between said carrier and said abrasion-resistant layer.
Claim 6
Dependent Claim
36 words
A multi-layer sheet material as claimed in claim 1 wherein said interlayer has a mean thickness of less than 20 micrometers and said carrier has a mean thickness at least five times that of said interlayer.
Claim 7
Dependent Claim
43 words
A multi-layer sheet material as claimed in claim 1 wherein said interlayer has a mean thickness in the range of about 2 to about 10 micrometers, and said carrier has a mean thickness in the range of about 50 to about 175 micrometers.
Claim 8
Dependent Claim
19 words
A multi-layer sheet material as claimed in claim 1 wherein said adhesive layer is composed of a pressure-sensitive adhesive.
Claim 9
Dependent Claim
19 words
A multi-layer sheet material as claimed in claim 1 wherein said adhesive layer is composed of a heat-sealable adhesive.
Claim 10
Dependent Claim
17 words
A multi-layer sheet material as claimed in claim 1 wherein said abrasion-resistant layer is a cured-in-place layer.
Claim 11
Dependent Claim
17 words
A multi-layer sheet material as claimed in claim 1 wherein said abrasion-resistant layer is a radiation-cured layer.
Claim 12
Dependent Claim
17 words
A multi-layer sheet material as claimed in claim 1 wherein said interlayer is composed of polyethylene terephthalate.
Claim 13
Dependent Claim
21 words
A multi-layer sheet material as claimed in claim 1 wherein both said interlayer and said carrier are composed of polyethylene terephthalate.
Claim 14
Dependent Claim
18 words
A multi-layer sheet material as claimed in claim 1 wherein said abrasion-resistant layer is also an antistatic layer.
Claim 15
Independent Claim
190 words
A method for the manufacture of a multi-layer sheet material that is useful as a protective laminate, characterized in that said method comprises the steps of: (1) providing a strippable carrier comprised of a flexible sheet material; (2) coating a surface of said carrier with a thin layer of a liquid composition which is capable of being cured to a solid state and which is weakly adhered to said surface following said curing; (3) laminating a thin structural interlayer of flexible sheet material to the liquid coated surface of said carrier, said interlayer being very thin in relation to the thickness of said carrier and the surface of said interlayer which contacts said liquid layer being strongly adhered following said curing; (4) curing said liquid layer in place to a solid state; and (5) applying a thin layer of an adhesive over said interlayer; whereby a multi-layer sheet material is formed which is adapted to be bonded to a substrate by means of said adhesive layer and to have said carrier stripped from said abrasion-resistant layer to thereby provide a protective laminate on said substrate which has an abrasion-resistant surface.
Claim 16
Independent Claim
190 words
A method for the manufacture of a multi-layer sheet material that is useful as a protective laminate, characterized in that said method comprises the steps of: (1) providing a strippable carrier comprised of a flexible sheet material; (2) coating a surface of said carrier with a thin layer of a liquid composition which is capable of being cured to a solid state and which is weakly adhered to said surface following said curing; (3) laminating a thin structural interlayer of flexible sheet material to the liquid coated surface of said carrier, said interlayer being very thin in relation to the thickness of said carrier and the surface of said interlayer which contacts said liquid layer being strongly adhered following said curing; (4) curing said liquid layer in place to a solid state; and (5) applying a thin layer of an adhesive over said interlayer; whereby a multi-layer sheet material is formed which is adapted to be bonded to a substrate by means of said adhesive layer and to have said carrier stripped from said abrasion-resistant layer to thereby provide a protective laminate on said substrate which has an abrasion-resistant surface.
Claim 17
Dependent Claim
28 words
A method as claimed in claim 14 wherein said liquid layer is cured in place by exposing it to ultraviolet radiation through either said carrier or said interlayer.
References Cited (Backward Citations)
No citation records indexed.
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