Molded parts with discontinuous fabric surface areas and processes for their production

• US 20050225005A1
• Filed: 06/02/2005
• Published: 10/13/2005
• Est. Priority Date: 07/29/2002
• Status: Abandoned Application

• Current Assignee: Ari P. Kinnunen, Curl E. Peterson, Eric L. Marchbanks, Kenneth T. Bennick, Michael E. Hus, Thomas E. Van Conett, Todd A. Demint
• Original Assignee: Ari P. Kinnunen, Curl E. Peterson, Eric L. Marchbanks, Kenneth T. Bennick, Michael E. Hus, Thomas E. Van Conett, Todd A. Demint
• Inventors: Marchbanks, Eric L., Kinnunen, Ari P., Bennick, Kenneth T., DeMint, Todd A., Peterson, Curl E., Hus, Michael E., Van Conett, Thomas E.
• Application Number:
  US11/143,382
• Publication Number:
  US 20050225005A1
• Time in Patent Office: Days
• US Class Current: 264/257
• CPC Class Codes: B29C 2045/14237 the inserts being deformed or preformed outside the mould or mould cavity
• CPC Class Codes: B29C 45/1418 the inserts being deformed or preformed, e.g. by the injection pressure
• CPC Class Codes: B29C 45/14344 Moulding in or through a hole in the article, e.g. outsert moulding
• CPC Class Codes: B29C 45/14811 Multilayered articles B29C45/14827 takes precedence
• CPC Class Codes: B29K 2711/08 Leather
• CPC Class Codes: B29K 2713/00 Use of textile products or fabrics for preformed parts, e.g. for inserts B29K2105/06 takes precedence
• CPC Class Codes: B29K 2715/003 Cellular or porous
• CPC Class Codes: B29K 2715/006 Glues or adhesives, e.g. hot melts or thermofusible adhesives
• CPC Class Codes: Y10T 442/3325 Including a foamed layer or component
• CPC Class Codes: Y10T 442/3854 Woven fabric with a preformed polymeric film or sheet
• CPC Class Codes: Y10T 442/647 Including a foamed layer or component
• CPC Class Codes: Y10T 442/674 Nonwoven fabric with a preformed polymeric film or sheet

Abstract

The present invention thus provides a fabric-laminated plastic part and a novel process where the fabric that provides the surface is pre-laminated with a support layer and supplied into a molding process where a plastic substrate component is molded. The fabric surface piece is precisely located and securely bonded by selection of a support layer plastic material having sufficient heat resistance and/or thickness to sufficiently resist melt softening and stretching during the molding process. This process and fabric laminated plastic article are especially suited for preparing thin-wall, articles that need to have precisely located, smooth fabric surface areas corresponding to discontinuities, voids or openings in the underlying molded plastic article.

Claims

1. A process for preparing a molded plastic article comprising a substrate plastic component with discontinuities or voids and a fabric surface area with discontinuities or voids corresponding and aligned to those in the substrate plastic component comprising the steps of:

(a) laminating to the back side of a fabric a support layer, (b) cutting or shaping the laminated fabric to generally conform to the shape and size of a desired fabric surface area and incorporating discontinuities or voids to correspond to those in the plastic substrate component, (c) inserting the shaped laminated fabric piece from step (b) into a molding cavity with the discontinuities and/or voids properly aligned with the mold surface and holding the piece in place, and (d) molding the plastic substrate component in the molding cavity, and (e) removing the molded plastic article from the mold.

2. The process according to claim 1 wherein the support layer is laminated to the fabric using an intermediate adhesive polymer.

3. The process according to claim 2 wherein the adhesive polymer is a(n) EVA (ethylene vinyl acetate) polymer adhesive.

4. The process according to claim 1 wherein the support layer comprises polycarbonate.

5. The process according to claim 1 wherein the shaped fabric piece is held in place in the mold cavity by one or more vacuum ports.

6. The process according to claim 1 wherein the substrate plastic material is a thermoplastic selected from the group consisting of polycarbonate (“

PC”

), ABS, polypropylene (“

PP”

), high impact polystyrene (“

HIPS”

), polyethylene (“

PE”

), polyester, polyacetyl, thermoplastic elastomers, thermoplastic polyurethanes (“

TPU”

), nylon, ionomers, polyvinyl chloride (“

PVC”

) and blends of two or more of these thermoplastics.

7. The process according to claim 1 wherein there is a foamed plastic layer between the fabric piece and the support layer of plastic material.

8. The process according to claim 1 wherein the fabric is a synthetic leather or suede.