# US 5,702,782 A · Two layer extrusion molding

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- Number: US 5,702,782 A
- Document ID: US5702782A
- Status: Granted
- Kind: A
- Application number: 08/700,580
- Filed: 1996-08-14
- Granted: 1997-12-30
- Earliest claimed: 1993-10-29
- Assignees: Toyoda Gosei Co., Ltd.
- Inventors: Shinichi Goto; Masao Kobayashi; Yasuhisa Kuzuya; Hidehito Ichikawa
- Web page: https://patentgrep.com/patent/US5702782A

## CPC

- B29C 48/154: Coating solid articles, i.e. non-hollow articles
- B29C 48/12: Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
- B29C 48/07: Flat, e.g. panels
- B29C 48/09: Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
- B29L 2031/3055: {Cars}
- B60R 13/04: {External} Ornamental or guard strips; Ornamental inscriptive devices {thereon (fastening strips or bars to sheets or plates by means of clips F16B5/12)}
- Y10T 428/3192: Next to vinyl or vinylidene chloride polymer
- Y10T 428/31935: Ester, halide or nitrile of addition polymer
- 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)
- B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

In a two layer extrusion molding, a core part 11 is formed of hard resin material, a crease pattern 11a having a given depth, preferably, a depth in the range of 10 to 20 .mu.m is formed on the surface of the core part 11, and a skin part 12 formed of soft resin material is coated on the surface of the core part 11. Thus, the core part and skin part are effectively prevented from being detached from each other to thereby improving the quality of the molded product.

## Claims

### Claim 1

A side-molding for use in a vehicle, said side molding being made by a two layer extrusion molding, said side molding comprising:
a core element formed of resin material having a first degree of hardness, said core including an outer surface provided with an adhesion enhancing, axially extending pattern having a depth ranging between about 5 to 25 .mu.m and
an exterior skin formed on the outer surface of said core of resin material having a degree of hardness less than said first degree of hardness.

### Claim 2 (depends on 1)

A two layer extrusion molding as claimed in claim 1, wherein said pattern is formed in the entire outer surface of said core.

### Claim 3 (depends on 1)

A two layer extrusion molding as claimed in claim 1, wherein the depth of said pattern a ranges between 10 .mu.m to 20 .mu.m.

### Claim 4

A side molding for use in a vehicle, said side molding being made by a two layer extrusion molding, said side molding comprising:
a core element formed of hard polyvinyl chloride resin material having a first degree of hardness, said core including an outer surface provided with an adhesion enhancing, axially extending pattern having a depth ranging between about 5 to 25 .mu.m; and
an exterior skin formed on the outer surface of said core element of soft polyvinyl chloride resin material having a degree of hardness less than said first degree of hardness.