COMPOSITE LAMINATE WITH A THIN, PERFORATED OUTER LAYER AND CAVITATED BONDED BACKING MEMBER

• US 3,770,560 A
• Filed: 10/21/1971
• Issued: 11/06/1973
• Est. Priority Date: 10/21/1971
• Status: Expired due to Term

• Current Assignee: Armand Francis Lewis, Gerald Brent Elder
• Original Assignee: Armand Francis Lewis, Gerald Brent Elder
• Inventors: Elder, Gerald Brent, Lewis, Armand Francis
• Primary Examiner(s): Lesmes, George F.
• Assistant Examiner(s): Ives, Patricia C.
• Application Number:
  US05/191,334
• Time in Patent Office: 747 Days
• Field of Search: 161/825,565,43,68,213,214,41,109,113,160,159,161 181/33
• US Class Current: 428/138
• CPC Class Codes: A47B 2220/13 Sound or noise reduction or dampening, e.g. built in via the furniture panels
• CPC Class Codes: A47L 15/4209 Insulation arrangements, e.g. for sound damping or heat insulation
• CPC Class Codes: B32B 15/043 of metal B32B15/01 takes precedence
• CPC Class Codes: B32B 15/08 of synthetic resin
• CPC Class Codes: B32B 15/18 comprising iron or steel B32B15/011, B32B15/012 and B32B15/013 take precedence
• CPC Class Codes: B32B 15/20 comprising aluminium or copper B32B15/016 and B32B15/017 take precedence
• CPC Class Codes: B32B 2307/102 Insulating
• CPC Class Codes: B32B 2311/24 Aluminium
• CPC Class Codes: B32B 2311/30 Iron, e.g. steel
• CPC Class Codes: B32B 27/00 Layered products comprising a layer of synthetic resin fibrous or filamentary layer made of a synthetic resin B32B5/02; particulate layer made of a synthetic resin B32B5/16; foamed layer made of a synthetic resin B32B5/18
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 3/266 characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
• CPC Class Codes: B32B 3/30 characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs apertured layer B32B3/266; layer with cavities or internal voids B32B3/26
• CPC Class Codes: E01F 8/0076 Cellular, e.g. as wall facing
• CPC Class Codes: E04B 1/86 slab-shaped
• CPC Class Codes: E04B 2001/7691 Heat reflecting layers or coatings
• CPC Class Codes: E04B 2001/8461 layered
• CPC Class Codes: E04B 2001/8485 the opening being restricted, e.g. forming Helmoltz resonators
• CPC Class Codes: G10K 11/172 using resonance effects
• CPC Class Codes: Y10T 428/24149 Honeycomb-like
• CPC Class Codes: Y10T 428/24273 : including aperture
• CPC Class Codes: Y10T 428/24298 : Noncircular aperture [e.g., slit, diamond, rectangular, etc.]
• CPC Class Codes: Y10T 428/24306 : Diamond or hexagonal
• CPC Class Codes: Y10T 428/24331 : including nonapertured component
• CPC Class Codes: Y10T 428/24967 : Absolute thicknesses specified
• CPC Class Codes: Y10T 428/31605 : Next to free metal
• CPC Class Codes: Y10T 428/31681 : Next to polyester, polyamide or polyimide [e.g., alkyd, glue, or nylon, etc.]

Abstract

Laminates comprising a thin, perforated outer layer and a thicker cavitated backing member bonded thereto, are disclosed.

Claims

2. A laminate according to claim 1, wherein said backing member comprises a sheet of metal or plastic having cavities at least 10 percent and not more than about 90 percent through the cross-section thereof.

3. A laminate according to claim 1, wherein said backing member comprises a perforated metal or plastic layer having bonded thereto, on the side opposite said outer layer, a layer of metal or plastic.

4. A laminate according to claim 1, wherein said outer layer and said backing member are aluminum or steel.

5. A laminate according to claim 1, wherein the adhesive is an epoxy resin, a polyurethane resin or polyimide resin based.

6. A laminate according to claim 1 wherein said outer layer is about 18-25 mils thick, has an open area of from about 18 percent to about 28 percent and a perforation diameter of from about 0.018 inch to about 0.025 inch and said backing member is about 70-90 mils thick, has an open area of from about 58 percent to about 68% and a cavity diameter of from about 0.016 inch to about 0.195 inch.

7. A laminate according to claim 1 wherein at least one of said outer layer and said backing member is a transparent plastic.