US3991006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic molding formulation reinforced with organic fibers
Assignee: Tarkett AB
•
Filing: 1974-12-31
•
Granted: 1976-11-09
•
Expires: 1994-12-31
Abstract
Abstract A plastic formulation is disclosed suitable for the manufacture of tile and the like. The formula comprises an intimate mixture of a resin and an organic fibrous filler. In accordance with this invention, the plastic formulation also comprises, in uniform dispersion, from 20 to 80 percent by weight of a particulate filler such as calcium carbonate, having a particle size of no more than 20 microns. This extremely fine particulate filler facilitates the uniform dispersion of the organic, fibrous filler.
Inventors
- 👤 Herman Chandler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:50
CPC Classifications
C; C08; C08K; C08K7/00; C08K7/02
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
91 words
In a plastic formulation which is suitable for the manufacture of tile and the like, said formulation comprising an intimate mixture of a. a resin selected from the group consisting of vinyl chloride/vinyl acetate copolymer, hydrocarbon resins and mixtures thereof; and b. an organic, fibrous filler not easily dispersed in said formulation; the improvement whereby said formulation also comprises in uniform dispersion from 20 to 80 percent by weight of filler of a particle size of no more than 20 microns, whereby said organic fibrous filler may also be uniformly dispersed.
Claim 2
Dependent Claim
91 words
In a plastic formulation which is suitable for the manufacture of tile and the like, said formulation comprising an intimate mixture of a. a resin selected from the group consisting of vinyl chloride/vinyl acetate copolymer, hydrocarbon resins and mixtures thereof; and b. an organic, fibrous filler not easily dispersed in said formulation; the improvement whereby said formulation also comprises in uniform dispersion from 20 to 80 percent by weight of filler of a particle size of no more than 20 microns, whereby said organic fibrous filler may also be uniformly dispersed.
Claim 3
Dependent Claim
23 words
The plastic formulation of claim 1 in which said filler of a particle size of no more than 20 microns is calcium carbonate.
Claim 4
Dependent Claim
12 words
The plastic formulation of claim 2 which is essentially free of asbestos.
Claim 5
Dependent Claim
66 words
The plastic formulation of claim 3 in which from 4 to 10 percent by weight of a terpolymer resin is also present, said terpolymer resin comprising branched poly(ethylene-vinyl chloride-vinyl acetate) molecules comprising from 85 to 90 percent by weight of said vinyl chloride units, from 7 to 14 percent by weight of vinyl acetate units and from 1 to 3 percent by weight of ethylene units.
Claim 6
Dependent Claim
15 words
The plastic formulation of claim 4 in which the resin comprises vinyl chloride/vinyl acetate copolymer.
Claim 7
Dependent Claim
20 words
The plastic formulation of claim 5 which includes from 0.5 to 2 percent by weight of a thermoplastic butadiene/acrylonitrile rubber.
Claim 8
Dependent Claim
23 words
The plastic formulation of claim 5 in which the fibers of the fibrous filler average between about 0.02 and about 0.15 inch long.
Claim 9
Dependent Claim
29 words
The plastic formulation of claim 5 in which from 20 to 50 percent by weight thereof consists essentially of calcium carbonate particles of less than 10 microns in size.
Claim 10
Dependent Claim
34 words
The plastic formulation of claim 8 in which from 20 to 60 percent by weight of crushed limestone is present in addition to said calcium carbonate particles of less than 10 microns in size.
Claim 11
Dependent Claim
22 words
The plastic formulation of claim 5 in which from 1 to 4 percent by weight of said organic fibrous filler is present.
Claim 12
Dependent Claim
17 words
The plastic formulation of claim 5 in which the fibrous filler material consists essentially of polyester fibers.
Claim 13
Dependent Claim
18 words
The plastic formulation of claim 5 in which the fibrous filler material consists essentially of polyethylene terephthalate fibers.
Claim 14
Dependent Claim
16 words
The plastic composition of claim 5 in which the organic fibrous filler consists essentially of nylon.
Claim 15
Dependent Claim
13 words
The plastic formulation of claim 1 in which the resin is hydrocarbon resin.
Claim 16
Dependent Claim
26 words
The plastic composition of claim 5 in which there is present no more than 20 percent by weight of resin plus any plasticizer in the formulation.
Claim 17
Dependent Claim
30 words
The plastic formulation of claim 15 in which the resin plus any plasticizer in the formulation is present in amounts between about 10 percent and about 20 percent by weight.
Claim 18
Dependent Claim
13 words
The plastic formulation of claim 14 in which the resin comprises chlorinated polyethylene.
References Cited (Backward Citations)
US3502611A
Cited
GB1331788A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-09 | 1980-05-10 | 1980-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-09 | 1984-05-10 | 1984-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-09 | 1988-05-10 | 1988-11-09 | $7700.00 | Window Closed / Lapsed |