US4331730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous web structure
Assignee: Georgia Pacific Consumer Products LP
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Filing: 1981-05-04
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Granted: 1982-05-25
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Expires: 2001-05-04
Abstract
Abstract Apparatus for the deposition of a uniform web of dry wood pulp fibers on a forming wire in combination with melt blowing die means operable to deposit melt blown fibers on the web of dry fibers to strengthen the web. Means for depositing the webs comprise serially disposed sets of fiber distributors, and the die means is disposed between the sets of fiber distributors so that the melt blown fibers are deposited as separate layers on the finished web.
Inventors
- 👤 Wayne P. Sorenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:04
CPC Classifications
D; D21; D21H; D21H15/00; B; B27; B27N; B27N3/00; B27N3/08; B27N3/10; B27N3/14; D04; D04H; D04H1/00; D04H1/40; D04H1/54; D04H1/56; D21H11/00; D21H13/00; D21H27/00; D21H27/30; D21H5/00; D21H5/26; D21H5/2607; D21H5/2628; D21H5/2642; Y; Y10; Y10S; Y10S428/00; Y10S428/903; Y10T; Y10T442/00; Y10T442/60; Y10T442/608; Y10T442/659; Y10T442/664; Y10T442/668
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A fibrous web comprising: at least a pair of layers of dry-laid nonstaple wood fibers of a predetermined length of about 1/8 inch; and an intermediate layer consisting of randomly laid, overlapping melt-blown filamentary polymer fibers from about 5 inches to about 15 inches in length, said polymer fibers bonding said layers together.
Claim 2
Dependent Claim
53 words
A fibrous web comprising: at least a pair of layers of dry-laid nonstaple wood fibers of a predetermined length of about 1/8 inch; and an intermediate layer consisting of randomly laid, overlapping melt-blown filamentary polymer fibers from about 5 inches to about 15 inches in length, said polymer fibers bonding said layers together.
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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) | 1985-05-24 | 1985-11-23 | 1986-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-24 | 1989-11-23 | 1990-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-24 | 1993-11-23 | 1994-05-25 | $7700.00 | Window Closed / Lapsed |