US4297406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Product for treating fabric
Assignee: Lever Brothers Co
•
Filing: 1979-02-01
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Granted: 1981-10-27
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Expires: 1999-02-01
Abstract
Abstract After washing fabrics can be treated with a conditioning agent, for example a fabric softener. In one method of treatment a substrate impregnated with a conditioning agent is contacted with the washed fabrics in tumble drier. The agent is transferred to the fabric during the repeated contacts between the substrate and fabric. The invention is the use of a substrate having a more dense structure at the outer surface. This more dense structure, which can be formed from laminated foam polymers, reduces the release of the agent so that the release is more even over a number of cycles.
Inventors
- 👤 John L. Metcalfe
- 👤 Douglas Wraige
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:44
CPC Classifications
D; D06; D06F; D06F58/00; D06F58/20; D06F58/203; D06M; D06M23/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/249921; Y10T428/249953; Y10T428/249981
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
69 words
A fabric treating product comprising: (a) a first and second outer layer of resiliently flexible foamed polymer substrate having a relatively dense structure; laminated to; (b) an inner layer of resiliently flexible foamed polymer substrate having a relatively less dense structure and being positioned between said first and second outer layers; and (c) a fabric conditioning agent impregnated into said inner layer and said first and second outer layers.
Claim 2
Dependent Claim
69 words
A fabric treating product comprising: (a) a first and second outer layer of resiliently flexible foamed polymer substrate having a relatively dense structure; laminated to; (b) an inner layer of resiliently flexible foamed polymer substrate having a relatively less dense structure and being positioned between said first and second outer layers; and (c) a fabric conditioning agent impregnated into said inner layer and said first and second outer layers.
Claim 3
Dependent Claim
58 words
A fabric treatment product according to claim 1, wherein said first and second outer layers and said inner layer are in sheet form, said first and second outer layers each have a thickness of from about 0.5 mm to about 4 mm and the overall thickness of the product is from about 0.2 cm to about 2.5 cm.
Claim 4
Dependent Claim
44 words
A fabric treatment product according to claim 2, wherein said first and second outer layers each have a thickness of from about 1 mm to about 2.5 mm and the overall thickness of the product is from about 0.5 cm to about 2.00 cm.
Claim 5
Dependent Claim
48 words
A fabric treatment product according to claim 1, wherein said first and second outer layers each have a pore count of from about 30 to about 70 cells per inch and said inner layer has a pore count of from about 5 to about 50 cells per inch.
Claim 6
Dependent Claim
18 words
A fabric treatment product according to claim 1, wherein said fabric conditioning agent comprises a fabric softening agent.
Claim 7
Dependent Claim
18 words
A fabric treatment product according to claim 5, wherein the fabric softening agent is a quaternary ammonium compound.
Claim 8
Dependent Claim
32 words
A fabric treatment product according to claim 6, wherein the quaternary ammonium compound is admixed with a non-ionic surfactant in a weight ratio of from about 2:1 to about 20:1 by weight.
Claim 9
Dependent Claim
17 words
A fabric treatment product according to claim 1, wherein said fabric conditioning agent comprises an anti-static agent.
Claim 10
Dependent Claim
26 words
A fabric treatment product according to claim 1, wherein said fabric conditioning agent is a normally solid material which melts at elevated temperatures during tumble drying.
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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) | 1984-10-26 | 1985-04-27 | 1985-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-26 | 1989-04-27 | 1989-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-26 | 1993-04-27 | 1993-10-27 | $7700.00 | Window Closed / Lapsed |