IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0167412
(2011-06-23)
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등록번호 |
US-8172300
(2012-05-08)
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발명자
/ 주소 |
- McCormick, Chris E.
- Strong, Brent A.
- Ridges, Mike D.
- Plumb, Kevin A.
- Smith, Jeff
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
48 |
초록
▼
Protective laminate films protect an underlying window surface from scratches or other damage. The laminate films generally include a substrate having a scratch resistant coating adhered to one side and an adhesive layer adhered to an opposite side. Adhesion promoter and primer layers may be provide
Protective laminate films protect an underlying window surface from scratches or other damage. The laminate films generally include a substrate having a scratch resistant coating adhered to one side and an adhesive layer adhered to an opposite side. Adhesion promoter and primer layers may be provided to enhance adhesion of the scratch-resistant coating to the surface. Each layer is transparent such that, when applied to a surface, the laminate film does not significantly impact or reduce optical clarity. Each layer may also be flexible so that the laminate films can be molded to a curved surface. Generally, the scratch resistant coating protects the laminate film from scratching or other damage, such as from debris or impacts. The substrate provides structural integrity to the laminate film and may provide some impact dispersion. The adhesive layer, in addition to adhering the laminate films to the surface, may also provide significant impact resistance that protects the surface from cracks or damage due to debris or impacts.
대표청구항
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1. A laminate film adapted for use in protecting a transparent surface from scratching or optical damage, comprising: a flexible substrate comprising a first surface and a second surface, the flexible substrate having a first composition;a first flexible adhesive layer adhered to the first surface o
1. A laminate film adapted for use in protecting a transparent surface from scratching or optical damage, comprising: a flexible substrate comprising a first surface and a second surface, the flexible substrate having a first composition;a first flexible adhesive layer adhered to the first surface of the flexible substrate;a flexible scratch-resistant coating adhered to the first flexible adhesive layer, the flexible scratch-resistant coating having a second composition that is different and more scratch-resistant than the first composition; anda second flexible adhesive layer adhered to the second surface of the flexible substrate,the flexible substrate, the flexible scratch-resistant coating, and the first and second flexible adhesive layers being selected, and the laminate film having an overall thickness, so as to provide the laminate film with a consistent refractive index across the laminate film so as to be substantially optically transparent,the laminate film being shock absorbing and flexible so as to readily conform to a shape of a transparent surface or be wound and stored as a roll while remaining substantially optically transparent and shock absorbing and retaining a consistent refractive index. 2. A laminate film as defined in claim 1, wherein the flexible substrate is comprised of a polyester material, wherein the first flexible adhesive layer is in direct contact with the polyester material without any intervening layers. 3. A laminate film as defined in claim 2, wherein the polyester material is polyethylene terephthalate. 4. A laminate film as defined in claim 1, wherein the flexible substrate is comprised of a polycarbonate material. 5. A laminate film as defined in claim 1, wherein the flexible substrate has a thickness in a range of about 2 mils to about 10 mils. 6. A laminate film as defined in claim 1, wherein the flexible substrate has a thickness in a range of about 3 mils to about 5 mils. 7. A laminate film as defined in claim 1, wherein the first flexible adhesive layer is formed from an acrylic resin. 8. A laminate film as defined in claim 1, wherein the first flexible adhesive layer is comprised of an adhesion promoter layer adjacent to and in direct contact with the first surface of the flexible substrate and a primer layer between the adhesion promoter layer and the scratch-resistant layer. 9. A laminate film as defined in claim 8, wherein the adhesion promoter layer is formed from an acrylic-polyurethane resin. 10. A laminate film as defined in claim 8, wherein the adhesion promoter layer has a thickness in a range of about 0.05 micron to about 1 micron. 11. A laminate film as defined in claim 8, wherein the adhesion promoter layer has a thickness in a range of about 0.075 micron to about 0.75 micron. 12. A laminate film as defined in claim 8, wherein the adhesion promoter layer has a thickness in a range of about 0.1 micron to about 0.5 micron. 13. A laminate film as defined in claim 8, wherein the primer layer is formed from an acrylic-fluoropolymer resin and an ultra-violet (UV) inhibitor. 14. A laminate film as defined in claim 8, wherein the primer layer has a thickness in a range of about 0.5 micron to about 10 microns. 15. A laminate film as defined in claim 8, wherein the primer layer has a thickness in a range of about 0.75 micron to about 7.5 microns. 16. A laminate film as defined in claim 8, wherein the primer layer has a thickness in a range of about 1 micron to about 5 microns. 17. A laminate film as defined in claim 1, wherein the scratch-resistant coating is formed from a mixture comprising one or more acrylic monomers and colloidal silica. 18. A laminate film as defined in claim 1, wherein the scratch-resistant coating has a thickness from about 2 microns to about 20 microns. 19. A laminate film as defined in claim 1, wherein the scratch-resistant coating has a thickness from about 7.5 microns to about 12.5 microns. 20. A laminate film as defined in claim 1, wherein the second adhesive layer is comprised of a pressure sensitive adhesive. 21. A laminate film as defined in claim 1, wherein the adhesive layer has a thickness from about 12 grams per square meter (GSM) to about 30 grams per square meter (GSM). 22. A laminate film as defined in claim 1, further comprising a flexible protective release liner adjacent to the second adhesive layer. 23. A laminate film as defined in claim 1, further comprising a backing layer adjacent to the flexible scratch-resistant coating. 24. A laminate film adapted for use in protecting a transparent surface from scratching or optical damage, comprising: a flexible substrate comprising a first surface and a second surface, the flexible substrate having a first composition;a first adhesion promoter layer having a first side adjacent to and in direct contact with the first surface of the flexible substrate;a primer layer adjacent to a second side of the adhesion promoter layer opposite the first side;a flexible scratch-resistant coating adjacent to the primer layer, the flexible scratch-resistant coating having a second composition that is different and more scratch-resistant than the first composition and protects against scratching by mechanical forces;a second adhesion promoter layer having a first side adjacent to the second surface of the flexible substrate; anda flexible adhesive layer adhered to a second side of the second adhesion promoter layer,the flexible substrate, the flexible scratch-resistant coating, the first and second adhesion promoter layers, the primer layer, and the flexible adhesive layer being selected, and the laminate film having an overall thickness, so as to provide the laminate film with a consistent refractive index across the laminate film. 25. A laminate film as defined in claim 24, wherein the scratch-resistant coating is formed from a mixture comprising one or more acrylic monomers and colloidal silica. 26. A laminate film as defined in claim 24, wherein the flexible substrate has a thickness in a range of about 2 mils to about 10 mils, wherein at least one of the first or second adhesion promoter layers has a thickness in a range of about 0.05 micron to about 1 micron, wherein the primer layer has a thickness in a range of about 0.5 micron to about 10 microns, wherein the scratch-resistant coating has a thickness from about 2 microns to about 20 microns. 27. A laminate film as defined in claim 26, wherein the scratch-resistant coating is formed from a mixture comprising one or more acrylic monomers and colloidal silica. 28. A laminate film as defined in claim 24, further comprising a flexible protective release liner adjacent to the flexible adhesive layer. 29. A laminate film as defined in claim 24, further comprising a backing layer adjacent to the flexible scratch-resistant coating. 30. A laminate film having shock absorbing properties and being adapted for use in protecting a transparent surface, the laminate film comprising: a combined scratch-resistant, shock absorbing, and flexible substrate comprising a monolithic material and having an exterior surface and an interior surface, the exterior surface comprising a polymer material that is ultra-violet (UV)-stabilized and substantially scratch-resistant, wherein the polymer material includes at least one of a scratch-resistant polyester, scratch-resistant acrylic acrylate, or colloidal silica, the substrate having a thickness in a range of about 2 mils to about 10 mils;an adhesion promoter layer adhered to the interior surface of the substrate and having a thickness in a range of about 0.05 micron to about 1 micron; anda shock absorbing and flexible adhesive layer adhered to the adhesion promoter layer, wherein the shock absorbing adhesive layer of the laminate film has a thickness and a Shore A hardness so as to be effective to: contribute to dispersing the impact forces of debris that contacts the laminate film when adhered to a transparent surface and thereby reduce damage to the transparent surface; andsecurely adhere the laminate film to the transparent surface when applied thereto while substantially maintaining optical transparence of the transparent surface,the combined scratch-resistant, shock absorbing, and flexible substrate, the adhesion promoter layer, and the shock absorbing and flexible adhesive layer being selected and having thicknesses so as to provide the laminate film with a consistent refractive index across the laminate film so as to be substantially optically transparent and protect against scratching of a transparent surface by mechanical forces, andthe laminate film being flexible so as to readily conform to a transparent surface or be wound and stored as a roll while remaining substantially optically transparent and shock absorbing and retaining a consistent refractive index. 31. A laminate film as defined in claim 30, further comprising a flexible protective release liner adjacent to the shock absorbing and flexible adhesive layer and a backing layer adjacent to the combined scratch-resistant, shock absorbing, and flexible substrate. 32. A protected transparent window comprising: a rigid transparent window having a flat or convex exterior surface; anda protective laminate film having shock absorbing properties affixed to the exterior surface of the rigid transparent window, the laminate film comprising: a polymer substrate comprising a first surface and a second surface, the polymer substrate having a first composition;a first adhesive layer adhered to and in direct contact with the first surface of the polymer substrate;a scratch-resistant coating adhered to the first adhesive layer, the scratch-resistant coating having a second composition that is different and more scratch-resistant than the first composition and protects against scratching by mechanical forces; anda second adhesive layer adhered to the second surface of the polymer substrate and the exterior surface of the rigid transparent window,the polymer substrate, the scratch-resistant coating, and the first and second adhesive layers being selected, and the laminate film having a thickness, so as to provide the laminate film with a consistent refractive index across the laminate film so as to be substantially optically transparent, andthe laminate film being shock absorbing so as to protect the rigid transparent window from mechanical impacts. 33. A laminate film adapted for use in protecting an outer surface of a flat or curved transparent window, comprising: a flexible substrate comprising a first surface and a second surface, the flexible substrate having a first composition;a first flexible adhesive layer adhered to and in direct contact with the first surface of the flexible substrate;a flexible scratch-resistant coating adhered to the first flexible adhesive layer, the flexible scratch-resistant coating having a second composition that is different and more scratch-resistant than the first composition; anda second flexible adhesive layer adhered to the second surface of the flexible substrate for adhering the laminate film to an outer surface of a flat or curved transparent window,the flexible substrate, flexible scratch-resistant coating, and the first and second flexible adhesive layers being selected, and the laminate film having an overall thickness, so as to provide the laminate film with a consistent refractive index across the laminate film so as to be substantially optically transparent,wherein the laminate film is configured to provide shock absorbance to a flat or curved transparent window and is pre-sized so as to approximate a size and shape of the flat or curved transparent window to which it is designed to be attached. 34. A laminate film as defined in claim 33, further comprising a flexible protective release liner adjacent to the second flexible adhesive layer and backing layer adjacent to the flexible scratch-resistant coating.
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