US3882211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the high speed production of non-woven fabrics
Assignee: Glad Products Co
•
Filing: 1973-07-20
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Granted: 1975-05-06
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Expires: 1993-07-20
Abstract
Abstract A method of making a non-woven fibrous web comprises providing a fluid stream, incorporating fibers in that stream, continuously directing the stream into a centrifugal flow, and collecting the fibers from the flow as a substantially endless web.
Inventors
- 👤 Ewald A Kamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:27
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/70; D04H1/72
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
49 words
The method of making a non-woven fibrous web comprising the steps of: providing a gaseous stream; incorporating discrete fibers in said stream; continuously directing said stream into a centrifugal flow; collecting said fibers from said flow as a substantially longitudinally endless tubular web; and detubularizing and flattening said web.
Claim 2
Independent Claim
49 words
The method of making a non-woven fibrous web comprising the steps of: providing a gaseous stream; incorporating discrete fibers in said stream; continuously directing said stream into a centrifugal flow; collecting said fibers from said flow as a substantially longitudinally endless tubular web; and detubularizing and flattening said web.
Claim 3
Dependent Claim
19 words
The method according to claim 1 wherein said method comprises the additional step of adding binder to said fibers.
Claim 4
Dependent Claim
23 words
The method according to claim 2 wherein said binder is added to said fibers after they have been formed into said tubular web.
Claim 5
Dependent Claim
16 words
The method according to claim 1 wherein said fibers are collected from said flow using suction.
Claim 6
Dependent Claim
17 words
The method according to claim 1 wherein said flow is a dowstream diverging, hollow, generally conical flow.
Claim 7
Dependent Claim
14 words
The method according to claim 1 wherein said flow is a substantially radial flow.
Claim 8
Dependent Claim
21 words
The method according to claim 1 wherein said tubular web is formed initially with a longitudinal discontinuity whereby to facilitate flattening.
Claim 9
Independent Claim
43 words
The method of making an agglomerated web comprising the steps of: providing a gaseous stream having particulate fibrous matter incorporated therein; continuously directing said stream into a centrifugal flow; and collecting said particulate matter from said flow as a substantially longitudinally endless web.
Claim 10
Independent Claim
43 words
The method of making an agglomerated web comprising the steps of: providing a gaseous stream having particulate fibrous matter incorporated therein; continuously directing said stream into a centrifugal flow; and collecting said particulate matter from said flow as a substantially longitudinally endless web.
Claim 11
Dependent Claim
43 words
The method according to claim 8 wherein said stream is collected on a foraminous member and wherein said stream is continuously directed into a centrifugal flow which is caused to move relatively generally away from the point of instantaneous impingement at said member.
References Cited (Backward Citations)
US2262853A
Cited
US3012922A
Cited
US3201499A
Cited
US3314840A
Cited
US3381069A
Cited
US3533884A
Cited
US3781393A
Cited
US3725518A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |