Molded parts with fabric surface areas and processes for their production

• US 20070199797A1
• Filed: 02/24/2006
• Published: 08/30/2007
• Est. Priority Date: 02/24/2006
• Status: Abandoned Application

• Current Assignee: Dow Global Technologies, Inc. (Dow, Inc.)
• Original Assignee: Dow Global Technologies, Inc. (Dow, Inc.)
• Inventors: Langmaid, Joseph, Sell, Steven Alan, Hus, Michael, Yeung, Kin Fung Alex, Salamon, Brent Alan
• Application Number:
  US11/361,787
• Publication Number:
  US 20070199797A1
• Time in Patent Office: Days
• US Class Current: 198/335
• CPC Class Codes: B29C 2045/14237 the inserts being deformed or preformed outside the mould or mould cavity
• CPC Class Codes: B29C 2045/14901 Coating a sheet-like insert smaller than the dimensions of the adjacent mould wall
• CPC Class Codes: B29C 45/1418 the inserts being deformed or preformed, e.g. by the injection pressure
• 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

Abstract

The present invention provides a fabric-laminated plastic part and a novel process of locating the fabric upon a plastic substrate component where the fabric extends over a contour of the plastic substrate component.

Claims

1. A process of forming a molded plastic article, comprising:

providing a surface fabric piece, wherein;

i. the fabric piece is comprised of a fabric and a backing, the backing having a thickness of less than about 0.5 millimeters;

ii. the fabric piece has a predetermined shape that includes a first portion disposed at an angle relative to a second portion, the first portion interconnected with the second portion by an intermediate contour;

locating the fabric piece between portions of a mold, wherein;

i. the intermediate contour of the fabric piece, before or after closure of the mold, nests within an angled portion of the mold, the angled portion having a size and shape corresponding to the intermediate contour of the fabric;

molding a plastic material to form a plastic substrate component adhered to the fabric piece thereby forming the molded plastic article, wherein;

i. the plastic substrate component includes a first surface and a second surface interconnected by an intermediate contour of the plastic substrate component;

ii. the fabric piece overlays the first surface and second surface of the plastic substrate component and the fabric piece extends over the intermediate contour of the plastic substrate component such that the intermediate contour of the fabric piece overlays the intermediate contour of the plastic substrate component;

removing the molded plastic article from the molding machine.

2. A process as in claim 1 wherein molding of the plastic material includes injecting the plastic material into a mold such that the material travels substantially parallel to the first portion of the fabric piece and travels perpendicular to and toward the second portion of the fabric piece.

3. A process as in claim 1 wherein the fabric is a synthetic leather or suede layered with a woven polymeric material.

4. A process as in claim 1 wherein the second portion is connected to a central portion having an arced shape.

5. A process as in claim 1 wherein the angle of the first portion of the fabric piece relative to the second portion of the fabric piece is less than about 95°

.

6. A process as in claim 1 wherein the substrate component has a thickness between the first surface of the substrate component and an inner surface of the substrate component and a distal edge of the fabric piece is located between the first surface and inner surface along the thickness.

7. A process as in claim 6 wherein the angle of the first surface of the molded plastic substrate component relative to the second surface of the molded plastic substrate component is less than about 95°

.

8. A process as in claim 1 wherein the first portion of the fabric piece is disposed at an angle relative to the second portion of the fabric piece and the angle is less than about 90°

.

9. A process as in claim 6 wherein the angle of the first surface of the molded plastic substrate component relative to the second surface of the molded plastic substrate component is less than about 90°

.

10. A process of forming a molded plastic article, comprising:

providing a surface fabric piece, wherein;

i. the fabric piece is comprised of a fabric and a thermoplastic backing;

ii. the fabric piece has a predetermined shape that includes a first portion disposed at an angle relative to a second portion, the first portion interconnected with the second portion by an intermediate contour, the angle being less than 110°

;

iii. the intermediate contour is a corner or bent portion of the fabric piece and is within 5 mm of a distal edge of the fabric piece;

iv. provision of the surface fabric piece includes lamination of the fabric to the thermoplastic backing; and

v. substantially the entirety of the fabric piece has a thickness no greater than 2 mm;

locating the fabric piece between portions of a mold of an injection molding machine and closing the mold, wherein;

i. the intermediate contour of the fabric piece, before or after closure of the mold, nests within an angled portion of the mold, the angle portion having a size and shape corresponding to the intermediate contour of the fabric;

ii. the fabric piece is held in place within the mold by vacuum pressure or mechanical features of the mold;

molding, via injection molding, a plastic material to form a plastic substrate component adhered to substantially an entire back surface of the fabric piece while leaving substantially an entire front surface of the fabric uncovered thereby forming the molded plastic article, wherein;

i. the plastic substrate component includes a distal edge that is at least partially defined by a first surface and a second surface interconnected by an intermediate contour of the plastic substrate component;

ii. the fabric piece overlays the first surface and second surface of the plastic substrate component and the fabric piece extends over the intermediate contour of the plastic substrate component such that the intermediate contour of the fabric piece overlays the intermediate contour of the plastic substrate component;

iii. a portion of the fabric piece, during the molding, is positively located within 0.5 mm of a predetermined location upon the second surface of the plastic substrate;

iii. the portion of the fabric piece is a distal edge of the fabric piece; and

iv. substantially the entirety of the plastic substrate component has a thickness less than about 4 mm;

v. a distal edge of the fabric piece is adjacent the distal edge of the substrate component;

removing the molded plastic article from the molding machine.

11. A process as in claim 10 wherein molding of the plastic material includes injecting the plastic material into a mold such that the material travels substantially parallel to the first portion of the fabric piece and travels perpendicular to and toward the second portion of the fabric piece.

12. A process as in claim 10 wherein the fabric is a synthetic leather or suede layered with a woven polymeric material.

13. A process as in claim 10 wherein the angle of the first portion of the fabric piece relative to the second portion of the fabric piece is less than about 95°

.

14. A process as in claim 10 wherein the angle of the first surface of the substrate component relative to the second surface of the substrate component is less than about 95°

15. A process as in claim 10 wherein the angle of the first portion of the fabric piece relative to the second portion of the fabric piece is less than about 75°

.

16. A process as in claim 10 wherein the angle of the first surface of the substrate component relative to the second surface of the substrate component is less than about 75°

.

17. A process as in claim 10 wherein the fabric is generally flexible and the backing is generally rigid.

18. A process of forming a molded plastic article, comprising:

providing a surface fabric piece, wherein;

i. the fabric piece is comprised of an aesthetically desirable fabric, a covering material and a thermoplastic backing;

ii. the fabric piece has a predetermined shape that includes a first portion disposed at an angle relative to a second portion, the first portion interconnected with the second portion by an intermediate contour, the angle;

iii. the intermediate contour is a corner or bent portion of the fabric piece and is within 5 mm of a perimeter edge of the fabric piece;

iv. the thermoplastic backing is a solid film includes a mixture of polycarbonate and polyethylene terephthalate;

v. the aesthetically desirable fabric is selected from leather, woven material, fibrous material, polymeric material or combinations thereof;

vi. provision of the surface fabric piece includes lamination of the fabric to the thermoplastic backing; and

vii. substantially the entirety of the fabric piece has a thickness no greater than 2 mm;

locating the fabric piece within a mold of an injection molding machine and closing the mold, wherein;

i. the intermediate contour of the fabric piece, before or after closure of the mold, nests within an angled portion of the mold, the angle portion having a size and shape corresponding to the intermediate contour of the fabric;

ii. the fabric piece is held in place within the mold by vacuum pressure or mechanical features of the mold or nestin;

molding, via injection molding, a plastic material to form a plastic substrate component adhered to substantially an entire back surface of the fabric piece while leaving substantially an entire front surface of the fabric uncovered thereby forming the molded plastic article, wherein;

i. the plastic substrate component includes an edge that is at least partially defined by a first surface and a second surface interconnected by an intermediate contour of the plastic substrate component;

ii. the fabric piece overlays the first surface and second surface of the plastic substrate component and the fabric piece extends over the intermediate contour of the plastic substrate component such that the intermediate contour of the fabric piece overlays the intermediate contour of the plastic substrate component;

iii. a portion of the fabric piece, during the molding, is positively located within 0.5 mm of a predetermined location upon the second surface of the plastic substrate;

iv. the portion of the fabric piece is a distal edge of the fabric piece; and

v. substantially the entirety of the plastic substrate component has a thickness less than about 4 mm;

removing the molded plastic article from the molding machine.

19. A process as in claim 18 wherein the angle of the first surface of the substrate component relative to the second surface of the substrate component is less than about 75°

.

20. A process as in claim 18 wherein the fabric is generally flexible and the backing is generally rigid.