Door panel

• US 5,073,429 A
• Filed: 02/14/1991
• Issued: 12/17/1991
• Est. Priority Date: 11/20/1989
• Status: Expired due to Fees

• Current Assignee: Findlay Industries, Inc.
• Original Assignee: Process Bonding, Inc.
• Inventors: Steinke, David M., Satterfield, Marshall G., Blankenship, Michael, Gardner, Philip D. Sr.
• Primary Examiner(s): Van Balen, William J.
• Application Number:
  US07/655,057
• Time in Patent Office: 306 Days
• Field of Search: 156/213, 156/245, 428/157, 428/159, 428/308.4, 428/309.9, 428/316.6, 428/317.1, 428/317.7
• US Class Current: 428/71
• CPC Class Codes: B29K 2105/04 cellular or porous
• CPC Class Codes: B32B 5/32 at least two layers being foamed and next to each other
• CPC Class Codes: B60R 13/02 Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners B60R13/01 takes precedence ; padded linings for the vehicle interior B60R21/04; arrangements or adaptations of floor mats or carpets in vehicles B60N3/04; internal lining for trains B61D17/18
• CPC Class Codes: B60R 13/0206 Arrangements of fasteners and clips specially adapted for attaching inner vehicle liners or mouldings devices for fastening or securing F16B
• CPC Class Codes: B60R 13/0243 Doors
• CPC Class Codes: Y10T 156/103 Encasing or enveloping the configured lamina
• CPC Class Codes: Y10T 428/233 Foamed or expanded material encased
• CPC Class Codes: Y10T 428/24488 Differential nonuniformity at margin
• CPC Class Codes: Y10T 428/24504 Component comprises a polymer [e.g., rubber, etc.]
• CPC Class Codes: Y10T 428/249958 Void-containing component is synthetic resin or natural rubbers
• CPC Class Codes: Y10T 428/24996 With internal element bridging layers, nonplanar interface between layers, or intermediate layer of commingled adjacent foam layers
• CPC Class Codes: Y10T 428/249981 Plural void-containing components
• CPC Class Codes: Y10T 428/249982 With component specified as adhesive or bonding agent
• CPC Class Codes: Y10T 428/249985 Composition of adhesive or bonding component specified

Abstract

A panel formed as a laminate with a decorative fabric at the exposed face includes a pair of foamed resin layers as backing material. Between the foamed resin layers is a fiber glass layer for strength. Means are provided to attach the panel to a substrate.

Claims

1. A composite panel comprising, a series of layers bonded together having two faces and an edge periphery,

one face comprising a layer of decorative material, adjacent said periphery said decorative material curing toward a second face to define a convex surface terminating at said periphery,

said decorative material being bonded to one side of a first foamed resin layer by an adhesive at least partially impregnating said foam, said foam being open celled

means adhered to said composite panel for connecting the panel to a substrate and

the periphery of said panel being compressed to a minimal thickness with the decorative material terminating substantially at said second face.

2. The panel of claim 1 wherein the adhesive impregnating said foamed layer is a mixture of about 60-75% polyol, 25-40% isocyanate and a catalyst.

3. The panel of claim 2 wherein the means adhered to said composite panel for connecting the panel to a substrate comprises at least one flanged resin stud having a shaft with a head on one end, said head being located between said first foam layer and said decorative layer, the shaft of the stud bearing the flange extending through the foamed layer and beyond for a distance great enough to allow the shaft and flange to project through a hole in said substrate, said hole having a cross-section smaller than said flange passing therethrough, said flange being flexible to the extent that it will (1) deform to pass through the hole upon sufficient pressure being applied in the area of the head and (2) spring back into position to hold the second face of the panel against the substrate.

4. The panel of claim 2 wherein the means adhered to said composite panel for connecting the panel to a substrate comprises a pressure sensitive double sided adhesive tape, one side of said adhesive tape being bonded to one side of said foamed layer, the other side of said adhesive tape being covered with a peel strip.

5. The panel of claim 1 wherein the means adhered to said composite panel for connecting the panel to a substrate comprises a pressure sensitive double sided adhesive tape, one side of said adhesive tape being bonded to one side of said foamed layer, the other side of said adhesive tape being covered with a peel strip.

6. The panel of claim 1 wherein the means adhered to said composite panel for connecting the panel to a substrate comprises at least one flanged resin stud having a shaft with a head on one end, said head being located between said first foam layer and said decorative layer, the shaft of the stud bearing the flange extending through the foamed layer and beyond for a distance great enough to allow the shaft and flange to project through a hole in said substrate, said hole having a cross-section smaller than said flange passing therethrough, said flange being flexible to the extent that it will (1 deform to pass through the hole upon sufficient pressure being applied in the area of the head and (2) spring back into position to hold the second face of the panel against the substrate.

7. A process for forming a panel comprising,

providing a mold having upper and lower sections, the upper section having a first planar surface facing the lower section, the lower section including a second planar section,

providing a border ridge around the second planar section, said ridge projecting toward said upper mold section and including a sharp cutting edge at its upper most edge which extends around the second planar surface, the height of said ridge being less than abut one-half inch above the second planar section,

providing a decorative layer to provide one face for said panel,

cutting the decorative layer to about the shape defined by said sharp edge,

placing the decorative layer on the lower mold in a position that the decorative layer covers the sharp edge and extends beyond said sharp edge at all locations,

providing a first layer of open celled foamed resin of a thickness in the range of about 1/4-1/2 inches, impregnating the foamed layer with an adhesive in an amount which will fill the cells upon compression to the desired thickness of the cured panel,

placing the first layer of foam over the decorative layer in a manner to completely cover the decorative layer,

pressing the two mold sections together to compress the layers between the planar sections and at the sharp ridge edge,

heating the lower mold section to about 150°

F. and the upper mold section to about 250°

F. for a period of time adequate to cure the adhesive.

8. The process of claim 7 further including, after the adhesive is cured, removing the upper mold section and running the lower mold section and cured panel between a pair of compression rollers to cut the panel at the sharp ridge edge.

9. The process of claim 8 including, before pressing the two mold sections together, applying means to said panel for connecting the panel to a substrate.

10. The process of claim 9 wherein the connecting means comprises at least one flanged resin stud having a shaft with a head on one end, said head being located between said first foam layer and said decorative layer, the shaft of the stud bearing the flange extending through the foamed layer and beyond for a distance great enough to allow the shaft and flange to project through a hole in said substrate, said hole having a cross-section smaller than said flange passing therethrough, said flange being flexible to the extent that they will (1) deform to pass through the hole upon sufficient pressure being applied in the area of the head and (2) spring back into position to hold the second face of the panel against the substrate.

11. The process of claim 9 wherein the connecting means comprises a layer of double sided pressure sensitive adhesive tape, placing a layer of said adhesive tape over the layer of foam, one side of said tape adhesively bondable to said layer of foamed resin, the other side of said adhesive tape facing the planar surface of the upper mold section being covered with a peel strip, the adhesive tape being of a size to cover the layer of foamed resin.

12. The process of claim 7 including, before pressing the two mold sections together, applying means to said panel for connecting the panel to a substrate.

13. The process of claim 12 wherein the connecting means comprises at least one flanged resin stud having a shaft with a head on one end, said head being located between said first foam layer and said decorative layer, the shaft of the stud bearing the flange extending through the foamed layer and beyond for a distance great enough to allow the shaft and flange to project through a hole in said substrate, said hole having a cross-section smaller than said flange passing therethrough, said flange being flexible to the extent that they will (1) deform to pass through the hole upon sufficient pressure being applied in the area of the head and (2) spring back into position to hold the second face of the panel against the substrate.

14. The process of claim 12 wherein the connecting means comprises a layer of double sided pressure sensitive adhesive tape, placing a layer of said adhesive tape over the layer of foam, one side of said tape adhesively bondable to said layer of foamed resin, the other side of said adhesive tape facing the planar surface of the upper mold section being covered with a peel strip, the adhesive tape being of a size to cover the second layer of foamed resin.

15. The process of claim 7 including, during assembly of the decorative layer on the lower mold, depositing the decorative layer in a manner to allow it to conform to the lower mold surface and ridge by gravity to thereby provide, adjacent to and inside the ridge, an expansion zone for the panel when it is compressed by the upper mold section, the resulting decorative layer surface approaching the ridges being a convex curve.

16. The process of claim 8 including, during assembly of the decorative layer on the lower mold, depositing the decorative layer in a manner to allow it to conform to the lower mold surface and ridge by gravity to thereby provide, adjacent to and inside the ridge, an expansion zone for the panel when it is compressed by the upper mold section, the resulting decorative layer surface approaching the ridges being a convex curve.

17. The process of claim 9 including, during assembly of the decorative layer on the lower mold, depositing the decorative layer in a manner to allow it to conform to the lower mold surface and ridge by gravity to thereby provide, adjacent to and inside the ridge, an expansion zone for the panel when it is compressed by the upper mold section, the resulting decorative layer surface approaching the ridges being a convex curve.

18. The process of claim 10 including, during assembly of the decorative layer on the lower mold, depositing the decorative layer in a manner to allow it to conform to the lower mold surface and ridge by gravity to thereby provide, adjacent t and inside the ridge, an expansion zone for the panel when it is compressed by the upper mold section, the resulting decorative layer surface approaching the ridges being a convex curve.

19. The process of claim 11 including, during assembly of the decorative layer on the lower mold, depositing the decorative layer in a manner to allow it to conform to the lower mold surface and ridge by gravity to thereby provide, adjacent to and inside the ridge, an expansion zone for the panel when it is compressed by the upper mold section, the resulting decorative layer surface approaching the ridges being a convex curve.

20. The process of claim 12 including, during assembly of the decorative layer on the lower mold, depositing the decorative layer in a manner to allow it to conform to the lower mold surface and ridge by gravity to thereby provide, adjacent to and inside the ridge, an expansion zone for the panel when it is compressed by the upper mold section, the resulting decorative layer surface approaching the ridges being a convex curve.