Patent US3870540A successfully refreshed from Google Patents.
US3870540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface texture for fibrous boards
Assignee: Individual
•
Filing: 1972-04-05
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Granted: 1975-03-11
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Expires: 1992-04-05
Abstract
Abstract An aesthetically pleasing texture is imparted to wet-laid fibrous mats by distributing a layer of solid expanded particles of synthetic thermoplastic resinous foamed material on the upper surface of the mat. The particles are then pressed into the wet lap to embed the particles in the fibrous material and the wet lap is subsequently heated to reduce the volume of the particles and leave depressions in the surface which result in a unique random surface texture.
Inventors
- 👤 Fred C Norgard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:22
CPC Classifications
B; B44; B44C; B44C5/00; B44C5/04; D; D21; D21H; D21H27/00; D21H27/02; E; E04; E04F; E04F13/00; E04F13/07; E04F13/08; E04F13/16; D21H13/00; D21H13/36; D21H13/38; D21H13/40; D21H19/00; D21H19/10; D21H19/14; D21H19/20; D21H19/22; D21H21/00; D21H21/50; D21H21/56; D21H25/00; D21H25/04; D21H25/06; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24496; Y10T428/24504; Y10T428/25; Y10T428/254
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
105 words
A METHOD OF TEXTURING THE SURFACE OF A WATER-LAID LAP OF ENTANGLED FIBERS COMPRISING: A. FORMING A WATER-LAID LAP OF ENTANGLED FIBERS: B. SUBSTANTIALLY UNIFORMLY DISTRIBUTING A LAYER OF DISCRETE PARTICLES OF A FOAMED SYNTHETIC ORGANIC THERMOPLASTIC RESINOUS MATERIALS ON ONE SURFACE OF THE WATER-LAID LAP OF ENTANGLED FIBERS SUCH THAT MOST OF THE PARTICLES ABOUT ONE ABOTHER BEFORE PRESSING THE WET LAP, C. PRESSING THE PARTICLES INTO THE WET-LAP TO EMBED THE PARTICLES IN THE WET LAP, AND, D. HEATING THE WET LAP TO REDUCE THE VOLUME OF THE FOAMED MATERIAL AND LEAVE DEPRESSIONS IN THE SURFACE WHICH PRODUCE A UNIQUE RANDOM SURFACE TEXTURE.
Claim 2
Independent Claim
105 words
A METHOD OF TEXTURING THE SURFACE OF A WATER-LAID LAP OF ENTANGLED FIBERS COMPRISING: A. FORMING A WATER-LAID LAP OF ENTANGLED FIBERS: B. SUBSTANTIALLY UNIFORMLY DISTRIBUTING A LAYER OF DISCRETE PARTICLES OF A FOAMED SYNTHETIC ORGANIC THERMOPLASTIC RESINOUS MATERIALS ON ONE SURFACE OF THE WATER-LAID LAP OF ENTANGLED FIBERS SUCH THAT MOST OF THE PARTICLES ABOUT ONE ABOTHER BEFORE PRESSING THE WET LAP, C. PRESSING THE PARTICLES INTO THE WET-LAP TO EMBED THE PARTICLES IN THE WET LAP, AND, D. HEATING THE WET LAP TO REDUCE THE VOLUME OF THE FOAMED MATERIAL AND LEAVE DEPRESSIONS IN THE SURFACE WHICH PRODUCE A UNIQUE RANDOM SURFACE TEXTURE.
Claim 3
Independent Claim
106 words
A method of texturing the surface of a water-laid lap of entangled fibers comprising: a. forming a water-laid lap of entangled fibers; b. substantially unifOrmly distributing a layer of discrete particles of a foamed synthetic organic thermoplastic resinous materials on one surface of the water-laid lap of entangled fibers such that most of the particles abut one another before pressing the wet lap; c. pressing the particles into the wet lap to embed the particles in the wet lap; and, d. heating the wet lap to reduce the volume of the foamed material and leave depressions in the surface which produce a unique random surface texture.
Claim 4
Independent Claim
106 words
A method of texturing the surface of a water-laid lap of entangled fibers comprising: a. forming a water-laid lap of entangled fibers; b. substantially unifOrmly distributing a layer of discrete particles of a foamed synthetic organic thermoplastic resinous materials on one surface of the water-laid lap of entangled fibers such that most of the particles abut one another before pressing the wet lap; c. pressing the particles into the wet lap to embed the particles in the wet lap; and, d. heating the wet lap to reduce the volume of the foamed material and leave depressions in the surface which produce a unique random surface texture.
Claim 5
Dependent Claim
29 words
The method of claim 1 wherein the thermoplastic material is selected from the group consisting of polystyrene, polyethylene, polypropylene, poly(vinyl chloride), poly(methyl methacrylate), nylon, and copolymers and blends thereof.
Claim 6
Dependent Claim
12 words
The method of claim 2 in which the thermoplastic material is polystyrene.
Claim 7
Dependent Claim
41 words
The method of claim 2 including the step of painting the surface of the resulting board after the heating step to alter the visual appearance of the board and to help bind the thermoplastic material to the surface of the board.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |