Composite laminate material and process for making the same

• US 4,454,187 A
• Filed: 06/22/1983
• Issued: 06/12/1984
• Est. Priority Date: 07/10/1980
• Status: Expired due to Fees

• Current Assignee: Allen Industries, Inc.
• Original Assignee: Allen Industries, Inc.
• Inventors: Flowers, Thomas A., Vinch, Samuel D., Shahani, Chandru T.
• Primary Examiner(s): Dawson, Robert A.
• Application Number:
  US06/506,749
• Time in Patent Office: 356 Days
• Field of Search: 156/78, 156/209, 156/220, 156/231, 156/238, 156/244.24, 264/45.1, 264/45.9, 264/46.1, 264/48, 427/244, 428/158, 428/159, 428/171, 428/172, 428/316.6
• US Class Current: 428/159
• CPC Class Codes: D06N 2201/0236 Vinyl halide, e.g. PVC, PVDC, PVF, PVDF
• CPC Class Codes: D06N 2201/0263 Polyamide fibres
• CPC Class Codes: D06N 2201/042 Cellulose fibres, e.g. cotton
• CPC Class Codes: D06N 2201/045 Lignocellulosic fibres, e.g. jute, sisal, hemp, flax, bamboo
• CPC Class Codes: D06N 2201/06 Animal fibres, e.g. hair, wool, silk
• CPC Class Codes: D06N 2201/082 Glass fibres
• CPC Class Codes: D06N 2205/04 Foam
• CPC Class Codes: D06N 2205/045 Froth
• CPC Class Codes: D06N 2205/20 Cured materials, e.g. vulcanised, cross-linked
• CPC Class Codes: D06N 2209/1628 Dimensional stability
• CPC Class Codes: D06N 2211/12 Decorative or sun protection articles
• CPC Class Codes: D06N 2211/263 Cars
• CPC Class Codes: D06N 7/0073 the back coating or pre-coat being applied as an aqueous dispersion or latex
• CPC Class Codes: D06N 7/0076 the back coating or pre-coat being a thermoplastic material applied by, e.g. extrusion coating, powder coating or laminating a thermoplastic film
• CPC Class Codes: Y10T 156/1023 Surface deformation only [e.g., embossing]
• CPC Class Codes: Y10T 156/1041 Subsequent to lamination
• CPC Class Codes: Y10T 428/24496 Foamed or cellular component
• CPC Class Codes: Y10T 428/24504 Component comprises a polymer [e.g., rubber, etc.]
• CPC Class Codes: Y10T 428/24603 Fiber containing component
• CPC Class Codes: Y10T 428/24612 Composite web or sheet
• CPC Class Codes: Y10T 428/249981 : Plural void-containing components

Abstract

A composite laminate material and a process for making the same are provided, the process comprising the steps of providing an unbonded fibrous batt of desired thickness having a thermosetting binder material dispersed therethrough, applying a layer of desired thickness of a curable latex to at least one side of the fibrous batt, drying the layer to a predetermined moisture level to provide a dried composite material, and heating and compression molding the dried composite material to simultaneously mold the composite, cure the layer and cure the binder material by embossing a pattern into the exposed side of the layer before the layer and the binder material are cured to cause the layer to be contoured with the pattern substantially throughout the thickness thereof and thereby cause the pattern to be substantially impressed into one side of the batt so that the resulting embossed and cured layer has a substantially uniform thickness and the one side of the cured batt substantially conforms to the embossed contour of the layer.

This application is a continuation patent application of copending parent application, Ser. No. 167,294, filed Jul. 10, 1980, now abandoned.

Claims

1. A process for making a composite laminate material which comprises the steps of

(a) providing an unbonded fibrous batt of desired thickness having a thermosetting binder material dispersed therethrough;

(b) applying a layer of desired thickness of a cureable latex to at least one side of said fibrous batt;

(c) drying said layer to a predetermined moisture level to provide a dried composite material; and

(d) heating and compression molding said dried composite material to simultaneously mold said composite, cure said layer and cure said binder material by embossing a pattern into the exposed side of said layer before said layer and said binder material are cured to cause said layer to be contoured with said pattern substantially throughout the thickness thereof and thereby cause said pattern to be substantially impressed into said one side of said batt so that the resulting embossed and cured layer has a substantially uniform thickness and said one side of said cured batt substantially conforms to the embossed contour of said layer.

2. The process of claim 1 wherein said latex is a foam and is applied to said batt by knife-coating said foam onto said batt.

3. The process of claim 1 wherein said latex is a foam and is applied to said batt by extruding said foam onto said batt.

4. The process of claim 1 wherein said latex is a foam and is applied to said batt by knife-coating said foam onto a carrier material and thereafter uniting said carrier material, having said foam layer thereon, with said batt.

5. The process of claim 1 wherein said latex is a foam that is dried to a moisture level of not greater than about 10 percent.

6. The process of claim 1 wherein said latex is a foam that is dried to a moisture level of not greater than about 3 percent.

7. The process of claim 1 wherein said latex is a foam that is dried at a drying temperature in the approximate range of 250°

to 350°

F. for a time in the approximate range of 5 to 20 minutes.

8. The process of claim 7 wherein said foam is heated during said foam drying step for a time sufficient to partially crosslink said foam.

9. The process of claim 1 wherein said cureable latex is an acrylic latex.

10. The process of claim 1 wherein said cureable latex is a nitrile latex.

11. The product of the process of claim 1.

12. The process of claim 1 wherein said step of heating and compression molding comprises the steps of disposing said composite material between a first platen and a second platen, and bringing said platens together to mold said composite material therebetween.

13. The process of claim 12 wherein said step of disposing said composite material comprises the step of disposing the exposed side of said batt onto a surface of said second platen, said step of bringing said platens together causing a decorative surface of said first platen to be embossed into said exposed side of said layer whereby the exposed side of the resulting cured batt has the contour of said surface of said second platen.

14. The process of claim 13 wherein said surface of said second platen is substantially flat whereby said cured batt has the exposed side thereof formed substantially flat.