US3656672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for splitting oriented plastic materials into fibrous structures
Assignee: Johnson and Johnson
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Filing: 1969-08-11
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Granted: 1972-04-18
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Expires: 1989-08-11
Abstract
Abstract This is a method and apparatus for splitting oriented plastic sheet materials such as films, ribbons, etc. into fibrous structures. The material to be split is moved in a first direction. The direction in which the material is moving is changed so that the second direction makes an acute angle with the first direction. Simultaneously with the change in direction or movement of the material a plurality of disruptive forces are applied to the material substantially in the direction of the movement of the material to split the oriented material into a fibrous structure.
Inventors
- 👤 Frank Kalwaites
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:50
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/42; D01D5/423; Y; Y10; Y10S; Y10S264/00; Y10S264/47; Y10T; Y10T225/00; Y10T225/10; Y10T225/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
66 words
A method of continually treating oriented plastic material to produce a split fiber web comprising: continually moving the material to be treated in a first direction, changing the direction at an acute angle to said first direction by passing said material over the edge of a blade while substantially simultaneously applying disrupture forces to the material whereby the material is uniformly split into a fiber network.
Claim 2
Independent Claim
66 words
A method of continually treating oriented plastic material to produce a split fiber web comprising: continually moving the material to be treated in a first direction, changing the direction at an acute angle to said first direction by passing said material over the edge of a blade while substantially simultaneously applying disrupture forces to the material whereby the material is uniformly split into a fiber network.
Claim 3
Dependent Claim
20 words
Method according to claim 1 wherein the disrupted forces are applied substantially only in the longitudinal direction of the material.
Claim 4
Dependent Claim
19 words
Method according to claim 1 wherein the disrupted forces are applied randomly across the entire width of the material.
Claim 5
Dependent Claim
16 words
Method according to claim 1 wherein the oriented plastic material is oriented in its longitudinal direction.
Claim 6
Dependent Claim
16 words
Method according to claim 1 wherein the oriented plastic material is oriented in its transverse direction.
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) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |