IPC分类号：
D21H27/28 | B41M1/26 | B41M1/36 | D21H27/18 | B32B27/42 | B32B29/04 | B32B5/16 | B32B27/04
国民经济行业分类号：
C2689 | C2212 | C2223 | C2211 | C2662 | C2222 | C3541 | C2661 | C2221
当前申请(专利权)人：
MEAD CORPORATION
原始申请(专利权)人：
MEAD CORPORATION
摘要：
1390447 Decorated paper containing laminate MEAD CORP 23 May 1972 [28 May 1971 24 March 1972] 24216/72 Heading B5N A decorated paper adapted for use in abrasion resisting laminates comprises a paper base layer, a top layer comprising abrasion resisting mineral particles having a hardness of 7 or more on the Moh scale and an average particle size ranging from 10 to 90 microns, and printing applied to said top layer. In a preferred embodiment, the top layer also includes paperforming fibres. The decorated paper may be made by depositing a paper base layer on the forming wire of a paper machine, depositing a top layer over said paper base layer while said base layer is in a wet state, said top layer comprising the mineral fibres defined above and optionally paper-forming fibres, pressing and drying the superposed layers and printing on the exposed side to the top layer. The particles may be of alumina, silica, alundum, corrundum, emery, spinel, tungsten, carbide, beryllium carbide, silicon carbide, aluminium carbide, boron carbide, diamond dust and mixtures thereof. A laminate is produced from the decorated paper by impregnating the paper with a resin, e.g. a melamine-aldehyde resin, and curing and uniting the resin impregnated paper with an underlying core. The core may comprise wood, particle board, plaster board, asbestos board or a plurality of plies of unbleached Kraft paper impregnated with a resin, e.g. a phenol-aldehyde resin. Consolidation of the assembly to be laminated is effected under heat and pressure.
权利要求：
**WARNING** start of CLMS field may overlap end of DESC **.
Example No. 40 41 42 43 Control
Decor from Ex. No. 28 33 28 33 39
Resin Used' LRM LPM DAP DAP DAP
Cycles to end-point 1500 1060 530 490 290
Wear rate gm/100 cycles 0.0058 0.0073 0.0240 0.0314 0.0710 1 LEM is low pressure melamine-aldehyde
DAP is diallyl phthalate
While the low pressure melamine-aldehyde is a harder resin than diallyl phthalate, both show marked improvement in abrasion resistance in a decor constructed according to this invention.
Examples 4445.
Sheets of the printed multilayer decor paper of Examples 28 and 33 were saturated with a self-crosslinking acrylic resin in latex form. The water was evaporated and the resin cross-linked by heating at 1300 C. The resultant product was suitable for such applications as wear resistant book covers, or could be adhered to a base or core to provide a thicker, laminated structure.
Abrasion resistance of the cured sheets, prior to any laminating or adhering step as follows:
Example No. 44 45 Control
Decor from Example No. 33 28 39 % Acrylic resin 32 34 34
Cycles to end point 400 600 140
Again, the marked improvement in abrasion resistance attained with the embodiment of printed multi layer decor according to this invention is evident
WHAT WE CLAIM IS:
1. A decorated paper adapted for use in
abrasion resisting laminates, comprising a paper base layer; a top layer comprising
abrasion resisting mineral particles having a hardness of 7 or more on the Moh scale and an average particle size ranging from 10 to
90 microns; and printing applied on said top layer.
2. A decorated paper according to Claim 1, wherein said top layer also includes paperforming fibres.
3. A decorated paper according to Claim 2, wherein said top layer consists of a paper layer comprising from 10% to 50% by weight
of said mineral particles and from 90% to
50% by weight paper-forming fibres.
4. A decorated paper according to any one of Claims 1, 2 or 3, wherein said mineral particles comprise alumina.
5. A decorated paper according to any one
of Claims 1, 2 or 3, wherein said mineral particles comprise silica.
6. A decorated paper according to any one of Claims 1, 2 or 3, wherein said mineral particles comprise silicon carbide.
7. A decorated paper according to any one of Claims 1, 2 or 3, wherein said mineral particles consist of a mixture of tungsten carbide and boron carbide.
8. A decorated paper according to any preceding claim, wherein said top layer has a basis weight ranging from 1 to 201b. per ream of 3000 sq. ft.
9. A decorated paper according to Claims 3, 4 and 8, wherein the top layer consists of a paper layer comprising 10% to 50% by weight alumina having a particle size distribution of 96% by weight in the size range of 20 to 60 microns and 90% to 50% by weight of bleached hardwood fibres in a basis weight ranging from 4 to 141b. per ream of 3000 sq. ft
10. A decorated paper according to any preceding claim, wherein said paper base layer has a basis weight ranging from 10 to 1001b. per ream of 3000 sq. ft.
11. A decorated paper according to Claim 10, wherein said paper base layer comprises paper-forming fibres and opacifying pigments, and has a basis weight ranging from 30 to 1001b. per ream of 3000 sq. ft.
12. A decorated paper according to Claim
1 and substantially as hereinbefore described with reference to and as shown in the accompanying drawings.
13. A decorated paper according to Claim 1 and substantially as hereinbefore described with reference to any of the Examples 1 to 45.
14. An abrasion resisting laminate comprising a core; and a decorated surface paper in accordance with any preceding claim and impregnated with resin.
15. An abrasion resisting laminate according to Claim 14, wherein said resin is a thermosetting resign.
16. An abrasion resisting laminate according to Claim 14 and substantially as hereinbefore described with reference to and as shown in the accompanying drawing.
17. An abrasion resisting laminate according to Claim 14 and substantially as hereinbefore described with reference to any of Examples loo45.
18. A method for producing a decorated paper adapted for use in abrasion resisting laminates, comprising the steps of: depositing a paper base layer on the forming wire of a paper machine; depositing a top layer over said paper base layer while said base layer is in a wet state, said top layer comprising abrasion resisting mineral particles having a hardness of 7 or more on the Moh scale and an average particle size ranging from 10 to 90 microns; pressing and drying the superposed layers; and printing on the exposed side of said top layer.
19. A method according to Claim 18 for producing a decorated paper, substantially as hereinbefore described with reference to the accompanying drawing or any of Examples 1 to 45.
20. A method for producing an abrasion resisting decorative laminate, comprising the steps of: producing a decorated paper by a method according to Claim 18 or Claim 19; impregnating the decorated paper with a resin; and curing and uniting the resin impregnated decorated paper with an underlying core.
21. A method according to Claim 20, wherein said resin is a thermosetting resin.
22. A method according to Claim 20 for producing an abrasion resisting decorative laminate, substantially as hereinbefore described with reference to the accompanying drawings or any of Examples 1 to 45.