Process and device for producing laminated safety glass and laminated safety glass produced thereby

• US 5,153,062 A
• Filed: 06/27/1990
• Issued: 10/06/1992
• Est. Priority Date: 02/13/1989
• Status: Expired due to Fees

• Current Assignee: Hoechst Aktiengesellschaft (Sanofi )
• Original Assignee: Hoechst Aktiengesellschaft (Sanofi )
• Inventors: Reinhard, Guenter, Grolig, Gerhard, Boening, Peter, Kuechler, Manfred
• Primary Examiner(s): Robinson, Ellis P.
• Assistant Examiner(s): Turner, Archene A.
• Application Number:
  US07/544,416
• Time in Patent Office: 832 Days
• Field of Search: 428/332, 428/426, 428/432, 428/436, 428/437, 428/469, 428/472, 428/477.4, 428/477.7, 428/480, 428/461, 428/621, 428/412, 428/336, 428/698, 350/1.6, 350/117, 350/166
• US Class Current: 428/336
• 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 17/10293 Edge features, e.g. inserts or holes
• CPC Class Codes: B32B 17/10761 containing vinyl acetal
• CPC Class Codes: B32B 17/10935 as a preformed layer, e.g. formed by extrusion
• CPC Class Codes: B32B 2367/00 Polyesters, e.g. PET, i.e. polyethylene terephthalate
• CPC Class Codes: B32B 2371/00 Polyethers, e.g. PEEK, i.e. polyether-etherketone; PEK, i.e. polyetherketone
• CPC Class Codes: B32B 2377/00 Polyamides
• 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 428/265 1 mil or less
• CPC Class Codes: Y10T 428/31507 Of polycarbonate
• CPC Class Codes: Y10T 428/31627 Next to aldehyde or ketone condensation product
• CPC Class Codes: Y10T 428/3163 Next to acetal of polymerized unsaturated alcohol [e.g., formal butyral, etc.]
• CPC Class Codes: Y10T 428/31692 Next to addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31761 Next to aldehyde or ketone condensation product
• CPC Class Codes: Y10T 428/31786 Of polyester [e.g., alkyd, etc.]

Abstract

A process for producing laminated safety glass is disclosed, comprising depositing a film which comprises at least one function layer on a plastic sheet, inserting the sheet between a plurality of further layers, such as two polyvinylbutyral sheets which are in turn enclosed by glass panes, such that the plastic sheet projects beyond the edges of the other layers, clamping the plastic sheet along its projecting sections, and laminating the layers. A clamping device for performing the process and a laminated safety glass produced by the process are also disclosed.

Claims

1. A laminated safety glass comprising a plurality of layers, at least one of which is a function layer, said layers forming a laminate which comprises a first glass layer, a first polyvinylbutyral sheet layer next to said first glass layer, a plastic sheet layer located next to said first polyvinylbutyral sheet layer and coated with said function layer, a second polyvinylbutyral sheet layer next to said function layer, and a second glass layer next to said second polyvinylbutyral sheet layer, wherein said plastic sheet layer projects beyond the edges of the other layers of said laminate, and wherein said function layer is a light-transparent and heat-reflecting film which comprises a first dielectric layer comprising tin oxynitride next to said plastic sheet layer, a silver layer next to said oxynitride layer, a metallic indium-tin oxide layer next to said silver layer, and a second dielectric layer comprising tin oxynitride located next to said metallic indium-tin oxide layer.

2. The laminated safety glass as claimed in claim 1, wherein said plastic sheet layer comprises a substrate comprising polyethylene terephthalate, polyamide or polyether sulfone.

3. A laminated safety glass as claimed in claim 1, wherein said plastic sheet layer is less than about 12 μ

m thick.

4. A laminated safety glass as claimed in claim 3, wherein said plastic sheet layer is less than about 2.6 μ

m thick.