§
Luxuse
Patent Intelligence
Sign In
← Back to Patent Explorer
US4420351A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of making decorative laminated products such as tiles, panels or webs from cellulosic materials

Assignee: Tarkett AB
•
Filing: 1982-04-29
•
Granted: 1983-12-13
•
Expires: 2002-04-29
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A laminated decorative tile particularly for flooring purposes, is made by forming a base layer of granulated cellulosic material in a matrix of fusible plastics, and placing on the base layer a thin decorative layer of cellulosic material with natural holes and recesses therein. After a film of fusible plastic has been applied on the decorative layer the laminate is hot pressed and then immediately cooled in a cold press. The tile obtained has a pleasing appearance because the granules of the base layer have been forced up, in the hot pressing operation, into the holes and recesses of the decorative layer, filling out these holes and recesses. In this embodiment the tile has a smooth wear resisting layer surface but this surface can be provided with a relief pattern such that it conforms to the structure of the decorative layer, if the tile after cooling is heated in a free state, i.e. without press plates.

Inventors

  • 👤 Eduard Lussi
  • 👤 Ulf L. Ahlstedt
  • 👤 Sven A. Ryden

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 12:25
CPC Classifications
B; B32; B32B; B32B21/00; B32B21/04; B32B21/08; B44; B44C; B44C3/00; B44C3/08; B44C5/00; B44C5/04; B44C5/043; B32B2607/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1059; Y10T156/1062; Y10T156/1075; Y10T156/1077; Y10T428/00; Y10T428/16; Y10T428/163; Y10T428/164; Y10T428/167; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/24339; Y10T428/24347; Y10T428/24355; Y10T428/24438; Y10T428/25; Y10T428/253; Y10T428/31504; Y10T428/3167; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31982

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 107 words
A method of making decorative laminated products, such as tiles, panels or webs, which comprises the steps of granulating a cellulosic material, mixing the granulate with a fusible plastics and making a mat therefrom, cutting from a cellulosic material thin slices which in the state obtained with the through holes and recesses therein are placed on the mat thus made, applying a film of fusible plastics onthe thin slices of cellulosic material, and compressing the laminate thus obtained under supply of heat for melting the plastics and urging the material of the mat into the holes and recesses of the slice, and then cooling the compressed tile.
Claim 2
Independent Claim 107 words
A method of making decorative laminated products, such as tiles, panels or webs, which comprises the steps of granulating a cellulosic material, mixing the granulate with a fusible plastics and making a mat therefrom, cutting from a cellulosic material thin slices which in the state obtained with the through holes and recesses therein are placed on the mat thus made, applying a film of fusible plastics onthe thin slices of cellulosic material, and compressing the laminate thus obtained under supply of heat for melting the plastics and urging the material of the mat into the holes and recesses of the slice, and then cooling the compressed tile.
Claim 3
Dependent Claim 36 words
A method as claimed in claim 1, wherein the cooling step includes cooling of the product in a cold press in which the tile is subjected to a higher pressure than in the hot pressing operation.
Claim 4
Dependent Claim 29 words
A method as claimed in claim 1 including the further step of subjecting the tile after cooling to free heating and cooling for relief formation of the plastics film.
Claim 5
Dependent Claim 18 words
A method as claimed in claim 1, wherein at least the thin layer of cellulosic material is cork.
Claim 6
Dependent Claim 16 words
A method as claimed in claim 1, wherein at least the granulated natural material is wood.
Claim 7
Dependent Claim 13 words
A method as claimed in claim 1, wherein the plastics are softened PVC.

References Cited (Backward Citations)

US2155429A Cited
US2097089A Cited
US2480851A Cited
US2823420A Cited
US3308009A Cited
US3549472A Cited
US4104103A Cited
US4225374A Cited
US4290988A Cited
US4347272A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1986-12-12 1987-06-13 1987-12-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1990-12-12 1991-06-13 1991-12-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1994-12-12 1995-06-13 1995-12-13 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag