Method of manufacturing a windshield having a protective laminate
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B32B-037/00
B60J-001/20
B32B-017/10
C09J-007/02
B32B-027/36
출원번호
US-0111537
(2008-04-29)
등록번호
US-9023162
(2015-05-05)
발명자
/ 주소
McCormick, Chris E.
Strong, A. Brent
Ridges, Mike D.
Plumb, Kevin A.
Smith, Jeff
출원인 / 주소
Clearplex Corporation
대리인 / 주소
Workman Nydegger
인용정보
피인용 횟수 :
0인용 특허 :
54
초록▼
Protective laminate films protect an underlying windshield from damage due to impacting rocks and other debris. The protective laminate films generally include a flexible polymer substrate having a scratch resistant coating and an adhesive layer on opposing surfaces thereof. Each layer is transparen
Protective laminate films protect an underlying windshield from damage due to impacting rocks and other debris. The protective laminate films generally include a flexible polymer substrate having a scratch resistant coating and an adhesive layer on opposing surfaces thereof. Each layer is transparent such that, when applied to a windshield, the laminate film does not inhibit visibility. Each layer may also be flexible so that the laminate films can be molded to a curved windshield. Generally, the scratch resistant coating protects the laminate films from scratching or other damage from impacting debris and/or from windshield wipers. The substrate provides structural integrity to the laminate films and may provide some degree of impact dispersion. The adhesive layer, in addition to adhering the laminate films to the windshield, may also provide significant impact resistance that helps protect the windshield from cracks or chips due to impacting rocks or other debris.
대표청구항▼
1. A method of applying a protective laminate film to an exterior surface of a vehicle windshield to provide shock absorbing properties, maintain optical clarity, and protect the exterior surface of the vehicle windshield from cracks or chips when impacted by gravel, rocks or other debris, comprisin
1. A method of applying a protective laminate film to an exterior surface of a vehicle windshield to provide shock absorbing properties, maintain optical clarity, and protect the exterior surface of the vehicle windshield from cracks or chips when impacted by gravel, rocks or other debris, comprising: (a) providing or obtaining a protective laminate film comprised of: a flexible single layer polymer substrate having a first surface and a second surface;a scratch-resistant coating adhered to the first surface of the single layer polymer substrate;a pressure sensitive adhesive layer adhered to the second surface of the single layer polymer substrate and configured to maintain optical clarity and disperse forces from gravel, rocks or other debris impacting the windshield during use; anda release liner adjacent to the pressure sensitive adhesive layer that protects the pressure sensitive adhesive layer prior to application of the laminate film to the windshield,the laminate film being flexible so as to readily conform to a curvature of a vehicle windshield and/or be wound and stored as a roll while remaining substantially optically transparent;(b) removing the release liner from the protective laminate film;(c) positioning the protective laminate film over the exterior surface of the vehicle windshield; and(d) causing or allowing the pressure sensitive adhesive layer to adhere to the exterior surface of the vehicle windshield. 2. A method as defined in claim 1, wherein the vehicle windshield is curved so that the exterior surface is convex and an interior surface is concave, the protective laminate film being applied to the convex exterior surface of the vehicle windshield. 3. A method as defined in claim 1, further comprising applying an aqueous liquid to the exterior surface of the vehicle windshield prior to (b)-(d). 4. A method as defined in claim 3, further comprising removing at least a portion of the aqueous liquid from the exterior surface of the vehicle windshield prior to (b)-(d) so as to remove debris from the exterior surface. 5. A method as defined in claim 3, further comprising moistening the adhesive layer of the protective laminate film with the aqueous liquid and placing the moistened adhesive layer onto the exterior surface of the vehicle windshield. 6. A method as defined in claim 5, further comprising applying pressure to the protective laminate film to remove air bubbles and/or liquid from between the protective laminate film and the exterior surface of the vehicle windshield. 7. A method as defined in claim 5, further comprising causing or allowing the aqueous liquid to dry in order for the adhesive layer to adhere to the exterior surface of the vehicle windshield. 8. A method as defined in claim 1, further comprising trimming the protective laminate film so as to fit within ¼ inch to 1/16 inch from the edge molding of the vehicle windshield when installed on a vehicle. 9. A method as defined in claim 1, further comprising heating the protective laminate film. 10. A method as defined in claim 9, wherein heating the protective laminate film causes it to shrink so as to better conform to a shape of the exterior surface of the vehicle windshield. 11. A method as defined in claim 1, wherein (b) and (c) are performed by a reverse roll method. 12. A method as defined in claim 1, wherein the flexible single layer polymer substrate comprises polyethylene terephthalate. 13. A method as defined in claim 1, wherein the flexible single layer polymer substrate comprises a material selected from the group consisting of plasticized vinyls (polyvinyl chloride with plasticizer), polyesters, polyurethanes, polycarbonates, and acrylics, and has a thickness of from about 2 mils to about 10 mils. 14. A method as defined in claim 1, wherein the adhesive layer has a Shore A hardness of from about 10 to about 20, is selected from the group consisting of acrylic, urethane, polyvinyl alcohol, and polyvinyl chloride based materials, and comprises two or more laminar optical grade adhesives laminated together to form a compound layer having more shock absorbance properties than the laminar optical grade adhesives have singularly. 15. A laminate film as defined in claim 1, wherein the scratch-resistant coating has a thickness from about 2 microns to about 10 microns. 16. A method of applying a protective laminate film to an exterior surface of a vehicle windshield attached to a vehicle to provide shock absorbing properties and protect the exterior surface of the vehicle windshield from rocks or other debris, comprising: (a) providing or obtaining a protective laminate film comprised of: a flexible single layer polymer substrate having a first surface and a second surface;a UV-stabilized scratch-resistant material forming or adhered to the first surface of the single layer polymer substrate;a pressure sensitive adhesive layer adhered to the second surface of the single layer polymer substrate; anda release liner adjacent to the adhesive layer that protects the adhesive layer prior to application of the laminate film to a windshield,the laminate film being flexible so as to readily conform to a curvature of a vehicle windshield and/or be wound and stored as a roll while remaining substantially optically transparent;(b) removing the release liner from the protective laminate film;(c) placing the protective laminate film over the exterior surface of the vehicle windshield on the outside of the vehicle; and(d) causing or allowing the adhesive layer to adhere to the exterior surface of the vehicle windshield. 17. A method of applying a protective laminate film to an exterior surface of a window to protect the window from scratching or optical damage, comprising: (a) providing or obtaining a protective laminate film comprised of: a flexible single layer polymer substrate having a first surface and a second surface;a scratch-resistant material forming or adhered to the first surface of the single layer polymer substrate;an optical grade pressure sensitive adhesive layer adhered to the second surface of the single layer polymer substrate; anda release liner adjacent to the pressure sensitive adhesive layer that protects the pressure sensitive adhesive layer prior to application of the laminate film to the exterior surface of the window,the laminate film being flexible so as to remain substantially optically transparent if curved or bent prior to or during installation,the flexible single layer polymer substrate, scratch-resistant material, and pressure sensitive adhesive layer together having optical transparence and providing light transmittance across the visible spectrum greater than 97%;(b) removing the release liner from the protective laminate film;(c) placing the protective laminate film over the exterior surface of the window; and(d) causing or allowing the pressure sensitive adhesive layer to adhere to the exterior surface of the window. 18. A method as defined in claim 17, further comprising moistening the pressure sensitive adhesive layer of the protective laminate film with an aqueous liquid and placing the moistened pressure sensitive adhesive layer onto the exterior surface of the window. 19. A method as defined in claim 18, further comprising applying pressure to the protective laminate film to remove air bubbles and/or liquid from between the protective laminate film and the exterior surface of the window. 20. A method as defined in claim 18, further comprising causing or allowing the aqueous liquid to dry in order for the adhesive layer to adhere to the exterior surface of the window. 21. A method as defined in claim 18, further comprising heating the protective laminate film. 22. A method of applying a protective laminate film to an exposed side of a transparent surface to protect the transparent surface from scratching or optical damage, comprising: (a) providing or obtaining a protective laminate film comprised of: a flexible single layer polymer substrate having a first surface and a second surface;a scratch-resistant material forming or adhered to the first surface of the single layer polymer substrate;a manually removable protective backing sheet adjacent to the scratch-resistant material for protecting the scratch-resistant material during handling and prior to use;a pressure sensitive adhesive layer adjacent to the second surface of the polymer substrate; anda release liner adjacent to the pressure sensitive adhesive layer that protects the pressure sensitive adhesive layer prior to application of the laminate film to the transparent surface,the laminate film being flexible so as to remain optically transparent if curved or bent prior to or during installation;(b) removing the release liner from the protective laminate film;(c) placing the protective laminate film over the transparent surface;(d) causing or allowing the adhesive layer to adhere to the transparent surface; and(e) removing the backing sheet from the scratch-resistant material. 23. A method as defined in claim 22, further comprising moistening the adhesive layer of the protective laminate film with an aqueous liquid and placing the moistened adhesive layer onto the transparent surface. 24. A method as defined in claim 23, further comprising applying pressure to the protective laminate film to remove air bubbles and/or liquid from between the protective laminate film and the transparent surface. 25. A method as defined in claim 23, further comprising causing or allowing the aqueous liquid to dry in order for the adhesive layer to adhere to the transparent surface. 26. A method as defined in claim 23, further comprising heating the protective laminate film. 27. A method as defined in claim 22, the protective laminate film further comprising a second adhesive layer adjacent to the pressure sensitive adhesive layer, the second adhesive layer being adhered directly to the second surface of the polymer substrate. 28. A method as defined in claim 1, wherein the scratch-resistant coating is UV-stabilized. 29. A method as defined in claim 1, wherein the single-layer polymer substrate, scratch-resistant coating, and pressure sensitive adhesive layer together have a light transmittance across the visible spectrum greater than 97%. 30. A method as defined in claim 16, wherein the flexible polymer substrate, scratch-resistant coating, and pressure sensitive adhesive layer together have a light transmittance across the visible spectrum greater than 97%.
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