Patent US3882211A successfully refreshed from Google Patents.
US3882211A
Expired / Lapsed
US
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Method for the high speed production of non-woven fabrics
Assignee: Glad Products Co
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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 01:31
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)
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US3201499A
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US3314840A
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US3381069A
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US3533884A
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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) | 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 |