Sheet produced by a papermaking technique for abrasion-resistant laminates

• US 5,609,966 A
• Filed: 11/30/1994
• Issued: 03/11/1997
• Est. Priority Date: 12/02/1993
• Status: Expired due to Fees

• Current Assignee: ARJO Wiggins Limited (Sequana SA)
• Original Assignee: ARJO Wiggins Limited (Sequana SA)
• Inventors: Caulet, Pierre, Perrin, Claude
• Primary Examiner(s): RAIMUND, CHRISTOPHER W
• Application Number:
  US08/351,129
• Time in Patent Office: 832 Days
• Field of Search: 428/290, 428/531, 428/535, 428/537.5, 264/258
• US Class Current: 428/535
• CPC Class Codes: B32B 2260/028 Paper layer
• CPC Class Codes: B32B 2260/046 Synthetic resin
• CPC Class Codes: B32B 2307/554 Wear resistance
• CPC Class Codes: B32B 2315/14 Mineral wool
• CPC Class Codes: B32B 2317/122 Kraft paper
• CPC Class Codes: B32B 29/005 next to another layer of paper or cardboard layer
• CPC Class Codes: B32B 29/02 next to a fibrous or filamentary layer
• CPC Class Codes: B44C 5/0476 with abrasion resistant properties
• CPC Class Codes: D21H 13/40 vitreous, e.g. mineral wool, glass fibres
• CPC Class Codes: D21H 27/28 treated to obtain specific resistance properties, e.g. against wear or weather water-repelling agents D21H21/16
• CPC Class Codes: Y10T 428/31967 Phenoplast
• CPC Class Codes: Y10T 428/31982 Wood or paper
• CPC Class Codes: Y10T 428/31993 Of paper

Abstract

The invention relates to a surface sheet produced by the papermaking method used in the production of abrasion-resistant laminates comprising glass wool fibers. According to the invention, the sheet comprises, before impregnation with thermosetting resin, up to about 7% by dry weight of glass wool fibers with respect to its total dry weight. The invention finds an application as protective covering sheet called overlay and as decorative sheet.

Claims

1. An abrasion-resistant laminate comprising a plurality of resin impregnated paper sheets and a protective covering overlay sheet, wherein the overlay sheet is produced by a papermaking technique and is comprised of glass wool fibers and cellulose fibers.

6. The abrasion-resistant laminate according to claim 1, wherein the glass wool fibers are present in an amount of up to 7% by dry weight of the protective overlay sheet.

9. The abrasion-resistant laminate according to claim 1, wherein the protective covering overlay sheet is impregnated with a thermosetting resin.

2. An abrasion-resistant laminate comprising a plurality of resin impregnated paper sheets and a decorative sheet, wherein the decorative sheet is produced by a papermaking technique and is comprised of glass wool fibers and cellulose fibers.

7. The abrasion-resistant laminate according to claim 2, wherein the glass wool fibers are present in an amount up to 7% by dry weight of the decorative sheet.

10. The abrasion-resistant laminate according to claim 2, wherein the decorative sheet is impregnated with thermosetting resin.

12. The abrasion-resistant laminate of claim 7, wherein the decorative sheet further comprises a pigment selected from the group consisting of opacifying pigments and coloring pigments.

3. An abrasion-resistant laminate comprising a plurality of resin impregnated paper sheets, a decorative sheet and a protective covering overlay sheet, wherein the overlay sheet and the decorative sheet are produced by a papermaking technique and are comprised of glass wool fibers and cellulose fibers.

8. The abrasion-resistant laminate according to claim 3, wherein the glass wool fibers are present in an amount of up to 7% by dry weight of each of the decorative and protective overlay sheets.

11. The abrasion-resistant laminate according to claim 3, wherein the decorative and protective overlay sheets are impregnated with thermosetting resin.

4. An abrasion-resistant laminate comprising a plurality of resin impregnated paper sheets and a surface layer, wherein the surface layer comprises a surface sheet that is produced by a papermaking technique, said surface sheet comprising glass wool fibers in an amount of up to 7% by dry weight of the surface sheet and cellulose fibers.

5. The abrasion-resistant laminate of claim 4, wherein the surface sheet is impregnated with thermosetting resin.

13. The abrasion-resistant laminate of claim 4, wherein the surface sheets and wherein said surface sheet forms the outer layer of the laminate.

14. A method for producing an abrasion-resistant laminate comprising the steps of:

(a) producing a surface sheet comprising glass wool fibers and cellulose fibers by a papermaking technique;

(b) drying the surface sheet;

(c) impregnating the surface sheet with a thermosetting resin;

(d) forming a stack of multiple sheets of Kraft paper impregnated with a thermosetting resin, a printed decorative sheet, and the impregnated surface sheet; and

(e) applying heat and pressure to the stack to form the abrasion resistant laminate.

15. The method according to claim 14, wherein in step (a) the glass wool fibers are present in an amount of up to about 7% by dry weight of the surface sheet.

16. The method according to claim 14, wherein the decorative sheet is impregnated with thermosetting resin.