Vehicle window glass

• US 4,874,654 A
• Filed: 06/06/1988
• Issued: 10/17/1989
• Est. Priority Date: 06/15/1987
• Status: Expired due to Fees

• Current Assignee: Nippon Sheet Glass Company Limited
• Original Assignee: Nippon Sheet Glass Company Limited
• Inventors: Funaki, Masaaki, Ichinomiya, Yutaka, Kunihiro, Koki
• Primary Examiner(s): Robinson, Ellis P.
• Assistant Examiner(s): Turner, Archene A.
• Application Number:
  US07/203,223
• Time in Patent Office: 498 Days
• Field of Search: 296/84.1, 296/96.19, 428/432, 428/192, 428/49, 428/212, 428/220, 428/332, 428/412, 428/411.1, 428/338
• US Class Current: 428/192
• CPC Class Codes: B29C 45/16 Making multilayered or multicoloured articles B29C45/0062 takes precedence; feeding colouring materials into the injection unit B29C45/1816
• CPC Class Codes: B29C 45/1628 using a mould carrier rotatable about an axis perpendicular to the opening and closing axis of the moulding stations
• CPC Class Codes: B29C 45/561 Injection-compression moulding
• CPC Class Codes: B29K 2995/0025 Opaque
• CPC Class Codes: B29K 2995/0026 Transparent
• CPC Class Codes: B29L 2031/3052 Windscreens
• CPC Class Codes: B29L 2031/778 Windows profiled elements for making window frames B29L2031/005, windscreens B29L2031/3052
• CPC Class Codes: B29L 2031/7782 Glazing
• CPC Class Codes: B60J 1/02 arranged at the vehicle front , e.g. structure of the glazing, mounting of the glazing on windscreen mounted antenna wire H01Q1/1271
• CPC Class Codes: Y10T 428/162 Transparent or translucent layer or section
• CPC Class Codes: Y10T 428/166 Glass, ceramic, or metal sections [e.g., floor or wall tile, etc.]
• CPC Class Codes: Y10T 428/24777 Edge feature
• CPC Class Codes: Y10T 428/24942 including components having same physical characteristic in differing degree
• CPC Class Codes: Y10T 428/26 Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
• CPC Class Codes: Y10T 428/268 Monolayer with structurally defined element
• CPC Class Codes: Y10T 428/31504 Composite [nonstructural laminate]
• CPC Class Codes: Y10T 428/31507 Of polycarbonate

Abstract

A vehicle window glass composed of a transparent part and a colored part formed on the periphery of the transparent part by the multi-color molding method.

A method for producing a vehicle window glass by forming a colored part on the periphery of the transparent part by the multi-color molding method, characterized in that at least one cycle of injection molding for the multi-color molding is accomplished by injection-compression molding.

A vehicle window glass composed of a transparent part and a peripheral colored part, characterized in that transparent part gradually thins out toward the periphery at the boundary between the transparent part and the colored part.

Claims

1. A multi colored molded window glass consisting essentially of:

a central part made of a single layer transparent organic glass, and

a peripheral part made of colored organic glass with at least one of translucent and opaque properties made of a transparent organic glass material incorporated with a pigment, said peripheral part being securely attached to a periphery of the central part, forming a composite glass, said window glass having characteristics so that the window glass retains original intended shape and has substantially no distortion of vision at a boundary between the central part and the peripheral part and an accurate surface due to uniform sink and shrinkage.

2. A window glass as claimed in claim 1, wherein the colored part is formed only on one of front and rear sides of the window glass.

3. A window glass as claimed in claim 1, wherein the transparent part is made of a thermoplastic resin.

4. A window glass as claimed in claim 1, wherein the colored part is made of polyethylene resin or vinyl chloride resin.

5. A window glass as claimed in claim 1, which has a thickness of 2 to 8 mm.

6. A window glass as claimed in claim 1, wherein the colored part is 0.5 to 2 mm thick and 5 to 30 mm wide.

7. A window glass as claimed in claim 1, wherein the surface is treated with transparent coating harder than the glass.

8. A multi colored molded window glass consisting essentially of:

a central part made of a single layer transparent organic glass, and

a peripheral part made of colored organic glass with at least one of translucent and opaque properties made of a transparent organic glass material incorporated with a pigment, said peripheral part and central part overlapping with and securely bonded to each other at a periphery of the central part so that the central part reduces its thickness and said peripheral part increases its thickness toward the periphery of the window glass forming a composite glass, said window glass having characteristics so that the window glass retains original intended shape and has substantially no distortion of vision at a boundary between the central part and the peripheral part and an accurate surface due to uniform sink and shrinkage.

9. A vehicle window glass as claimed in claim 8, wherein said central part overlaps the peripheral part at front and rear sides of the peripheral part to partly form three layers.

10. A vehicle window glass as claimed in claim 8, which is formed from organic glass by the multi-color molding method.

11. A vehicle window glass as claimed in claim 10, wherein at least the transparent part is formed by the injection-compression method.

12. A window glass as claimed in claim 8, wherein the colored part is 5 to 100 mm wide.

13. A window glass as claimed in claim 12, wherein the colored part is 15 to 50 mm wide.

14. A window glass as claimed in claim 8, wherein the transparent part thins out along a slope of 4°

to 12°

.

15. A window glass as claimed in claim 14, wherein the transparent part thins out along a slope of 4°

to 8°

.

16. A window glass comprising,

a central part made of a single layer transparent organic glass, and

a peripheral part made of colored organic glass with at least one of translucent and opaque properties made of a transparent organic glass material incorporated with a pigment. said peripheral part being integrally connected to a periphery of the central part by injection molding one of the central part and the peripheral part to the other of the central part and the peripheral part, forming a composite glass, said window glass having characteristics so that the window glass retains original intended shape and has substantially no distortion of vision at a boundary between the central part and the peripheral part and an accurate surface due to uniform sink and shrinkage.