US3663344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orthotropic fiber-reinforced thermoplastic film and method of manufacture
Assignee: Kimberly Clark Corp
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Filing: 1970-12-31
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Granted: 1972-05-16
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Expires: 1990-12-31
Abstract
Abstract A film-staple fiber composite, and method of making same, provides an integral product of satisfactory tensile strength yet with low tear resistance. Cross-laid fiber webs impart tensile strength to the film and the fiber webs are placed in close proximity to each other to develop the low tear resistance.
Inventors
- 👤 Robert J Brock
- 👤 Paul B Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:36
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/02; B32B5/12; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/16; B29C70/20; B29C70/202; B29C70/28; B29C70/40; B29C70/50; B29C70/504; B32B27/00; B32B27/12; B32B27/30; B32B27/304; B32B3/00; B32B3/02; B32B3/04; B32B5/22; B32B5/24; B32B5/26; B32B7/00; B32B7/04; B32B7/12; B29K; B29K2027/00; B29K2027/06; B29K2105/00; B29K2105/06; B29K2105/08; B29K2105/10; B29K2105/101; B29K2105/108; B29K2267/00; B29K2995/00; B29K2995/0037; B29K2995/0077; B32B2307/00; B32B2307/50; B32B2307/54; B32B2307/70; B32B2307/718; B32B2398/00; B32B2398/20; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1039; Y10T156/1041; Y10T428/00; Y10T428/23; Y10T428/239; Y10T428/24; Y10T428/24802; Y10T428/24851; Y10T428/28
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
27 words
The method of claim 1 wherein the weight ratio of the thermoplastic film and the adhesive backings to the fibers is from about 3 to about 10:1.
Claim 2
Dependent Claim
37 words
The method of claim 1 where the staple length fibers are synthetic fibers of a denier of between 0.5 and 6 and the fibrous webs have a basis weight of from about 6 to about 20 grams/yd.2.
Claim 3
Dependent Claim
18 words
The method of claim 1 where the thermoplastic film and the adhesives comprise a composition including polyvinyl chloride.
Claim 4
Independent Claim
95 words
A method for producing a film-Fiber composite exhibiting the properties of satisfactory orthotropic tensile strength, high flexibility and low tearing resistance comprising the steps of imprinting a discontinuous adhesive pattern onto a temporary support having a release surface, embedding a fibrous web, whose fibers are predominately oriented in one direction, into the adhesive to form a fiber laminate with an adhesive backing, fusing and curing the adhesive, stripping the fiber laminate from the temporary support, cross-laying at least two fiber laminates and bonding them together and enveloping the bonded assembly with a continuous thermoplastic film.
Claim 5
Dependent Claim
95 words
A film-fiber composite characterized by satisfactory tensile strength, high flexibility and low resistance to tearing in the orthotropic directions comprising a first fiber laminate comprising a discontinuous adhesive backing having a fibrous web embedded therein, the fibers being predominately oriented in one direction, a second fiber laminate comprising a discontinuous adhesive backing having a fibrous web with the fibers being predominately oriented in one direction being crosslaid with respect to said first fiber laminate and being bonded thereto with the backings being in a face-to-face relationship and a thermoplastic film encasing the crosslaid fiber laminates.
Claim 6
Dependent Claim
51 words
The film-fiber composite of claim 6 wherein the fibers are staple length fibers and the webs each have a basis weight of from about 6 to about 20 gms/yd.2 and the weight ratio of the thermoplastic film and the adhesive backings to the fibers is from about 3 to about 10:1.
Claim 7
Dependent Claim
19 words
The film-fiber composite of claim 6 wherein the thermoplastic film and the adhesives comprise a composition including polyvinyl chloride.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |