Impact-resisting anti-lacerative window units

• US 4,945,002 A
• Filed: 08/28/1987
• Issued: 07/31/1990
• Est. Priority Date: 08/28/1986
• Status: Expired due to Term

• Current Assignee: Bridgestone Corporation
• Original Assignee: Bridgestone Corporation
• Inventors: Segawa, Masashi, Tanuma, Itsuo, Honda, Toshio, Takeichi, Hideo
• Primary Examiner(s): Ives, P. C.
• Application Number:
  US07/090,290
• Time in Patent Office: 1,068 Days
• Field of Search: 428/473.5, 428/425.6, 428/442, 428/447, 428/476.9, 428/522, 428/437, 428/480
• US Class Current: 428/425.6
• CPC Class Codes: B32B 17/10005 laminated safety glass or glazing
• CPC Class Codes: B32B 17/10018 comprising only one glass sheet
• CPC Class Codes: B32B 17/10293 Edge features, e.g. inserts or holes
• CPC Class Codes: B32B 17/10697 being cross-linked
• CPC Class Codes: B32B 17/10788 containing ethylene vinylacetate
• CPC Class Codes: B32B 17/1099 After-treatment of the layered product, e.g. cooling
• CPC Class Codes: B32B 2367/00 Polyesters, e.g. PET, i.e. polyethylene terephthalate
• CPC Class Codes: B32B 27/36 comprising polyesters
• CPC Class Codes: Y10T 156/1059 Splitting sheet lamina in plane intermediate of faces
• CPC Class Codes: Y10T 428/1452 Polymer derived only from ethylenically unsaturated monomer
• CPC Class Codes: Y10T 428/1462 Polymer derived from material having at least one acrylic or alkacrylic group or the nitrile or amide derivative thereof [e.g., acrylamide, acrylate ester, etc.]
• CPC Class Codes: Y10T 428/31601 Quartz or glass
• CPC Class Codes: Y10T 428/3163 Next to acetal of polymerized unsaturated alcohol [e.g., formal butyral, etc.]
• CPC Class Codes: Y10T 428/31649 Ester, halide or nitrile of addition polymer
• CPC Class Codes: Y10T 428/31663 As siloxane, silicone or silane
• CPC Class Codes: Y10T 428/31721 Of polyimide
• CPC Class Codes: Y10T 428/31757 Polymer of monoethylenically unsaturated hydrocarbon
• CPC Class Codes: Y10T 428/31786 Of polyester [e.g., alkyd, etc.]
• CPC Class Codes: Y10T 428/31935 Ester, halide or nitrile of addition polymer

Abstract

An impact-resisting anti-lacerative window glass unit of laminate of a sandwich structure is disclosed, which comprises two exterior plate-like member made of a transparent organic polymer (A) and a transparent organic polymer (B) or a transparent inorganic material, respectively, and multilayer structure intermediate films made of at least two kinds of polymers (C). The multilayer structure intermediate films are interposed between two exterior plate-like members. A method of fitting such an impact-resisting anti-lacerative laminate to a window frame or an automobile is also disclosed, which comprises removing a fitting portion of a hard coated transparent organic polymer (A) and the multilayer structure intermediate films through peeling while remaining at least one layer of a high breaking strength material layer as one of at least two kinds of the polymers (C) in the multilayer structure intermediate films on a person'"'"'s side, and fitting the laminate to the window frame or an automobile body with an adhesive sealant by utilizing a thus exposed surface.

Claims

1. An impact-resisting anti-lacerative window unit of a sandwich structure comprising two exterior plate-like members made of a transparent organic polymer (A) and a transparent organic polymer (B) or a glass plate, respectively, and multilayer structure intermediate films interposed between the exterior platelike members, wherein said films consist essentially of alternatively laminated ethylene-vinyl acetate and ethylene-vinyl acetate triallyl isocyanurate terpolymer layers having therebetween a layer of a high breaking strength material selected from the group consisting of polyethylene terephthalate, polyamides, aromatic polyamides, polyester polyethers, polysulfones and polyimides.

2. An impact-resisting anti-lacerative window unit according to claim 1, wherein said intermediate layer having high breaking strength is polyethylene terephthalate.

3. An impact-resisting anti-lacerative window unit according to claim 1, wherein the exterior plate-like member made of the transparent organic polymer material (A) is a transparent film of polyethylene terephthalate.

4. An impact-resisting anti-lacerative window unit according to claim 1, wherein a surface of the exterior plate-like member of the transparent organic polymer (A) is treated with a silane base hard coat agent.