# US 5,348,810 A · Elastomeric laminated sheet metal parts

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- Number: US 5,348,810 A
- Document ID: US5348810A
- Status: Granted
- Kind: A
- Application number: 07/751,559
- Filed: 1991-08-29
- Granted: 1994-09-20
- Earliest claimed: 1991-08-29
- Assignees: LTC Roll & Engineering Co.
- Inventors: Michael C. Page
- Web page: https://patentgrep.com/patent/US5348810A

## CPC

- B29C 48/154: Coating solid articles, i.e. non-hollow articles
- B29C 48/313: {by positioning the die lips}
- B32B 1/00: Layered products having a non-planar shape
- B32B 15/043: {of metal (B32B15/01 takes precedence)}
- B32B 15/08: of synthetic resin
- B32B 15/082: comprising vinyl resins; comprising acrylic resins
- B32B 15/18: comprising iron or steel {(B32B15/011, B32B15/012 and B32B15/013 take precedence)}
- B32B 27/304: {comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF}
- B32B 37/153: {at least one layer is extruded and immediately laminated while in semi-molten state}
- B29C 48/07: Flat, e.g. panels
- B29C 48/08: flexible, e.g. films
- B29C 48/12: Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
- B32B 2307/7246: Water vapor barrier
- B32B 2311/30: Iron, e.g. steel
- B32B 2327/06: PVC, i.e. polyvinylchloride
- Y10T 428/12562: Elastomer
- Y10T 428/12854: Next to Co-, Fe-, or Ni-base component
- Y10T 428/12979: Containing more than 10% nonferrous elements [e.g., high alloy, stainless]
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Raw sheet metal substrate (36) passing through an extrusion die (54) is partially laminated with a thin film of plastic (40). A boundary line (42) is formed between the laminated and unlaminated portions of the substrate (36). The sheet metal substrate (36) is folded upon itself so that the plastic laminate (40) bears in pressing relation against the unlaminated portion of the substrate (36) to create a fold (44) sealed against lateral moisture penetration. The unlaminated portion of the substrate (36) may be chrome plated (50). The extrusion die (54) includes an adjustable die member (64) and an adjustable wear plate (78). Alternatively, the extrusion die (54) may include an adjustable extrusion orifice (62) for varying the thickness of the plastic extruded onto the sheet metal substrate (36). Two sheet metal substrates (36') are moved through the extrusion die (54') simultaneously and in back-to-back relation to neutralize reaction forces from the respective emissions of pressurized plastic.

## Claims

### Claim 1

A composite contoured strip comprising:
a sheet of malleable stainless steel substrate having an upper surface;
a sheet of elastomeric material laminated to a portion of said upper surface with a generally linear boundary line along said upper surface dividing said elastomeric layer from an unlaminated portion of said upper surface, and a layer of metallic plate disposed over said unlaminated portion of said upper surface;
and characterized by a fold in said substrate extending adjacent and parallel to said boundary line and bending said unlaminated portion to overlie and compress said elastomeric layer into compression against the laminated portion of said upper surface to seal said fold against lateral moisture penetration.

### Claim 2 (depends on 1)

A strip as set forth in claim 1 further characterized by said plate comprising a chromium composition.

### Claim 3 (depends on 1)

A strip as set forth in claim 1 wherein said substrate includes at least one peripheral edge, further characterized by said unlaminated portion being disposed along said peripheral edge.

### Claim 4 (depends on 3)

A strip as set forth in claim 3 further characterized by said elastomeric layer comprising a polyvinylchloride material.