Process for Producing Laminated Glass with Inserted Plastic Film and Laminated Glass with Inserted Plastic Film

• US 20100285310A1
• Filed: 12/16/2008
• Published: 11/11/2010
• Est. Priority Date: 01/09/2008
• Status: Abandoned Application

• Current Assignee: Central Glass Company Limited
• Original Assignee: Central Glass Company Limited
• Inventors: Nakamura, Isao, Takamatsu, Atsushi, Izutani, Kensuke, Yonekura, Masaaki
• Application Number:
  US12/810,253
• Publication Number:
  US 20100285310A1
• Time in Patent Office: Days
• US Class Current: 428/337
• CPC Class Codes: B32B 17/10005 laminated safety glass or glazing
• CPC Class Codes: B32B 17/10036 comprising two outer glass sheets
• CPC Class Codes: B32B 17/10174 Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
• CPC Class Codes: B32B 17/10761 containing vinyl acetal
• CPC Class Codes: B32B 17/10889 shaping the sheets, e.g. by using a mould B32B17/10816 takes precedence
• 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: C03C 27/06 Joining glass to glass by processes other than fusing fusing C03B23/20; units for use as elements for closing wall or like openings and comprising two or more parallel glass panes in spaced relationship, the panes being permanently secured together E06B3/66
• CPC Class Codes: Y10T 428/266 of base or substrate

Abstract

A production method of producing a plastic film-inserted laminated glass comprising a first step for subjecting a plastic interlayer and a plastic film to a thermocompression bonding, a second step for placing another plastic interlayer on the plastic film that has been subjected to the thermocompression bonding at the first step, thereby to produce a laminated film, a third step for putting the laminated film produced at the second step between two curved glass plates thereby to produce a laminated body, a fourth step for applying the laminated body with pressure and heat by using an autoclave thereby to achieve bonding of entire construction of the laminated body and a fifth step for cutting and removing the laminated film that protrudes from edges of the curved glass plates.

Claims

1. A production method of producing a plastic film-inserted laminated glass that comprises a laminated film including a plastic film intimately put between two plastic interlayers, comprising the following steps:

a first step for subjecting a plastic interlayer and a plastic film to a thermocompression bonding;

a second step for placing another plastic interlayer on the plastic film that has been subjected to the thermocompression bonding at the first step, thereby to produce a laminated film;

a third step for putting the laminated film produced at the second step between two curved glass plates thereby to produce a laminated body;

a fourth step for applying the laminated body with pressure and heat by using an autoclave thereby to achieve bonding of entire construction of the laminated body; and

a fifth step for cutting and removing the laminated film that protrudes from edges of the curved glass plates.

2. A production method of producing a plastic film-inserted laminated glass as claimed in claim 1, in which the first step comprises:

a step (a) in which by using a curved glass plate or a mold plate that has curved shape similar to a projected curved surface of the curved glass plate, the plastic interlayer is put on the projected curved surface of the curved glass plate or the projected surface side of the mold plate;

a step (b) in which a tension is applied to the plastic film;

a step (c) in which the plastic film is put on the plastic interlayer, which has been put on the glass pate or the projected surface side of the mold plate, while being applied with the tension; and

a step (d) in which the plastic interlayer and the plastic film are subjected to the thermocompression bonding.

3. A production method of producing a plastic film-inserted laminated glass as claimed in claim 1, in which each of the curved glass plates has a radius of curvature that is in the range from 0.9m to 3m.

4. A plastic film-inserted laminated glass produced by the production method of producing a plastic film-inserted laminated glass as claimed in claim 1, in which a infrared ray reflecting layer is formed on a surface of the plastic film.

5. A plastic film-inserted laminated glass produced by the production method of producing a plastic film-inserted laminated glass as claimed in claim 1, in which a hard coat layer is formed on a surface of the plastic film.