US4547421A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Highly dispersed continuous glass fiber mats
Assignee: Owens Corning Fiberglas Technology Inc
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Filing: 1984-10-22
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Granted: 1985-10-15
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Expires: 2004-10-22
Abstract
Abstract A mat comprised of at least one layer of highly dispersed continuous glass fiber strands is produced according to defined parameters for use in reinforcing thermoplastic as well as thermosetting materials.
Inventors
- 👤 Sidney G. Dunbar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:10
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; B32B17/00; B32B17/02; D; D04; D04H; D04H3/00; D04H3/002; D04H3/004; D04H3/08; D04H3/12; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/0353; H05K1/0366; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/16; B29C70/18; B32B2262/00; B32B2262/10; B32B2262/101; B32B2457/00; B32B2457/08; H05K2201/00; H05K2201/02; H05K2201/0275; H05K2201/0293; Y; Y10; Y10T; Y10T442/00; Y10T442/60; Y10T442/659; Y10T442/66; Y10T442/662
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
76 words
A fibrous mat comprising a plurality of layers wherein at least one of the layers is comprised of a plurality of bundles of continuous glass filaments intersecting one another defining open sections therein, the number of intersections of said bundles being within the range from about 60 to about 210 intersections per mm 2 , the area of said open sections being within the range from about 3.4×10 2 to about 4.0×10 4 μm 2 .
Claim 2
Dependent Claim
76 words
A fibrous mat comprising a plurality of layers wherein at least one of the layers is comprised of a plurality of bundles of continuous glass filaments intersecting one another defining open sections therein, the number of intersections of said bundles being within the range from about 60 to about 210 intersections per mm 2 , the area of said open sections being within the range from about 3.4×10 2 to about 4.0×10 4 μm 2 .
Claim 3
Dependent Claim
33 words
The mat of claim 1 wherein said bundles have from about 1 to about 54 filaments per bundle, said filaments having diameters within the range from about 20 HT to about 150 HT.
Claim 4
Dependent Claim
21 words
The mat of claim 1 wherein at least one of the other layers of said mat are comprised of glass fibers.
Claim 5
Dependent Claim
15 words
The mat of claim 3 wherein said glass fibers of the other layer are continuous.
Claim 6
Dependent Claim
27 words
The mat of claim 1 wherein the number of intersections of bundles is within the range from about 70 to about 185 intersections per mm 2 .
Claim 7
Dependent Claim
27 words
The mat of claim 5 wherein the area of said open sections is within the range from about 5.0×10 2 to about 3.4×10 4 μm 2 .
Claim 8
Dependent Claim
23 words
The mat of claim 6 wherein the diameters of the filaments are within the range from about 60 HT to about 120 HT.
Claim 9
Dependent Claim
11 words
A sheet of resinous material containing the mat of claim 1.
Claim 10
Dependent Claim
13 words
The sheet of claim 8 wherein said resinous material is a thermoplastic material.
Claim 11
Dependent Claim
13 words
The sheet of claim 8 wherein said resinous material is a thermosetting material.
Claim 12
Dependent Claim
16 words
The mat of claim 1 wherein all of the other layers are comprised of glass filaments.
Claim 13
Dependent Claim
31 words
The mat of claim 11 wherein the porosity of the mat is less than or equal to 500 CFM/ft 2 at a differential pressure of 0.5 inch of H 2 O.
Claim 14
Dependent Claim
17 words
The mat of claim 11 wherein weight of the mat is less than 2.0 oz/ft 2 .
Claim 15
Dependent Claim
16 words
The mat of claim 11 wherein said mat has from about 6 to about 36 layers.
Claim 16
Dependent Claim
17 words
The mat of claim 1 further comprising a resinous binder to join said bundles and layers together.
Claim 17
Dependent Claim
11 words
Ihe mat of claim 1 wherein said layers are needlepunched together.
Claim 18
Dependent Claim
67 words
A fibrous mat comprising at least one layer of a plurality of bundles of continuous glass filaments intersecting one another defining open sections therein, the number of intersections of said bundles being within the range from about 60 to about 210 intersections per mm 2 , the area of said open sections being within the range from about 3.4×10 2 to about 4.0×10 4 μm 2 .
Claim 19
Dependent Claim
67 words
A fibrous mat comprising at least one layer of a plurality of bundles of continuous glass filaments intersecting one another defining open sections therein, the number of intersections of said bundles being within the range from about 60 to about 210 intersections per mm 2 , the area of said open sections being within the range from about 3.4×10 2 to about 4.0×10 4 μm 2 .
Claim 20
Dependent Claim
33 words
Ihe mat of claim 1 wherein said bundles have from about 1 to about 54 filaments per bundle, the filaments having diameters within the range from about 20 HT to about 150 HT.
Claim 21
Dependent Claim
27 words
The mat of claim 17 wherein the number of intersections of bundles is within the range from about 70 to about 185 intersections per mm 2 .
Claim 22
Dependent Claim
27 words
The mat of claim 19 wherein the area of said open sections falls within the range from about 5.0×10 2 to about 3.4×10 4 μm 2 .
References Cited (Backward Citations)
US4469543A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-10-14 | 1989-04-15 | 1989-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-14 | 1993-04-15 | 1993-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-14 | 1997-04-15 | 1997-10-15 | $7700.00 | Window Closed / Lapsed |