US4147253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supply package for wet-impregnated multifilament roving
Assignee: Stamicarbon BV
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Filing: 1977-06-09
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Granted: 1979-04-03
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Expires: 1997-06-09
Abstract
Abstract {PG,1 A supply package for wet-impregnated multifilament roving is provided in which the multifilament roving is impregnated with a curable liquid having a tack less than about 6 (measured on a Thwing-Albert inkometer) in an amount at least sufficient to fill the spaces between the filaments in the roving, but not in excess of about a 3:2 ratio of curable liquid to fiber, by volume. This impregnated roving is way wound onto a cylinder to provide a crossing angle between the rovings in adjacent layers of at least about 10{20 {0 to provide free volume storage capacity between the angled rovings which accepts any liquid which may run off. In this manner the wet-impregnated roving can be stored wet in the way wound cylinder and easily withdrawn therefrom when needed.
Inventors
- 👤 Richard L. Brook
- 👤 Joseph E. Gaske
- 👤 Thomas E. Kearney
- 👤 Russell D. Wydeen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:43
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/22; D02G3/40; B; B65; B65H; B65H55/00; B65H2701/00; B65H2701/30; B65H2701/31; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1314; Y10T428/1352; Y10T428/1369
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
134 words
A supply package for wet-impregnated multifilament roving comprising multifilament roving impregnated with a curable organic liquid having a tack less than about 6 on a Thwing-Albert inkometer, said roving containing said curable liquid in an amount at least sufficient to fill the spaces between the filaments in the roving, but not in excess of about a 3:2 ratio of curable liquid to fiber, by volume, said impregnated roving being way wound onto a cylinder to provide a crossing angle between the rovings in adjacent layers of at least about 10° to provide free volume storage capacity between the angled rovings to accept any of said liquid which may run off a roving, whereby said wet-impregnated roving can be easily withdrawn from the cylinder and said way wound cylinder being packaged within a liquid-impermeable wrapper.
Claim 2
Dependent Claim
134 words
A supply package for wet-impregnated multifilament roving comprising multifilament roving impregnated with a curable organic liquid having a tack less than about 6 on a Thwing-Albert inkometer, said roving containing said curable liquid in an amount at least sufficient to fill the spaces between the filaments in the roving, but not in excess of about a 3:2 ratio of curable liquid to fiber, by volume, said impregnated roving being way wound onto a cylinder to provide a crossing angle between the rovings in adjacent layers of at least about 10° to provide free volume storage capacity between the angled rovings to accept any of said liquid which may run off a roving, whereby said wet-impregnated roving can be easily withdrawn from the cylinder and said way wound cylinder being packaged within a liquid-impermeable wrapper.
Claim 3
Dependent Claim
28 words
A supply package for wet-impregnated multifilament roving as recited in claim 1 in which said curable liquid has a room temperature viscosity of less than about 3000 centipoises.
Claim 4
Dependent Claim
30 words
A supply package for wet-impregnated multifilament roving as recited in claim 1 in which said curable liquid is curable with actinic light and said wrapper is opaque to actinic light.
Claim 5
Dependent Claim
26 words
A supply package for wet-impregnated multifilament roving as recited in claim 1 in which said wound cylinder is hollow to provide a center feed supply package.
Claim 6
Dependent Claim
51 words
A supply package for wet-impregnated multifilament roving as recited in claim 1 in which said curable liquid comprises a polyacrylate at least a portion of which has been adducted with a monosecondary aliphatic amine to produce an unsaturated adduct, and a ketonic photosensitizer rendering said liquid curable upon actinic light exposure.
Claim 7
Dependent Claim
43 words
A supply package for wet-impregnated multifilament roving as recited in claim 5 in which said aliphatic amine is selected from diethyl amine and dibutyl amine and is used in an amount of from 0.5% to 5% of the polyacrylate in said curable liquid.
Claim 8
Dependent Claim
46 words
A supply package for wet-impregnated multifilament roving as recited in claim 1 in which the fibers of said roving are glass fibers and said liquid is used in an amount of from 22% to 35% of the total weight of liquid and glass in said roving.
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) | 1982-04-02 | 1982-10-02 | 1983-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-02 | 1986-10-02 | 1987-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-02 | 1990-10-02 | 1991-04-03 | $7700.00 | Window Closed / Lapsed |