US2887132A - Unidirectional woven fabric - Google Patents
Unidirectional woven fabric Download PDFInfo
- Publication number
- US2887132A US2887132A US70147257A US2887132A US 2887132 A US2887132 A US 2887132A US 70147257 A US70147257 A US 70147257A US 2887132 A US2887132 A US 2887132A
- Authority
- US
- United States
- Prior art keywords
- yarns
- fabric
- warp
- weft
- spaced
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/242—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads inorganic, e.g. basalt
- D03D15/267—Glass
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
- D03D15/44—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads with specific cross-section or surface shape
- D03D15/46—Flat yarns, e.g. tapes or films
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2101/00—Inorganic fibres
- D10B2101/02—Inorganic fibres based on oxides or oxide ceramics, e.g. silicates
- D10B2101/06—Glass
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
- D10B2505/02—Reinforcing materials; Prepregs
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/2973—Particular cross section
- Y10T428/2976—Longitudinally varying
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/30—Woven fabric [i.e., woven strand or strip material]
- Y10T442/3179—Woven fabric is characterized by a particular or differential weave other than fabric in which the strand denier or warp/weft pick count is specified
- Y10T442/322—Warp differs from weft
Definitions
- This invention relates to an improved unidirectional
- Such fabric is s'ed as a reinforcement in molded plastic articles, for example in chemical tanks, pipes, boats, etc.,
- Vand is usually made in webs of ⁇ twelve or less feet inrwidth -on a loom.
- the fabric is loosely Woven with ⁇ the warp containing the bulk of the fibres and the filling being widely spaced, light, fine yarns.
- Glass fibre strands are smooth and slippery so that when a web of the unidirectional fabric is cut into smaller pieces for molding, the material tends to fall apart along the cut, or selvage, edges. Even before cutting there is a marked tendency for the warp yarns to shift laterally.
- the principal object of this invention is to provide a woven fabric of unidirectional glass fibres in which the widely spaced, fine weft fibres lock the warp in place without adhesive, heat bonding, extra strips or other additional weaving steps.
- AAnother object of the invention is to provide a woven fabric of unidirectional glass fibres in which drapability and cutting capability is maintained while retaining the loose weave of the material.
- a further object of the invention is to provide a woven fabric of unidirectional glass fibres in which the glass fibres throughout the length of the Warp are prevented from shifting, slipping, fraying or pulling apart by widely spaced, fine yarns having randomly spaced irregularities in cross section and running either warp Wise or weft wise, or both.
- Fig. 1 is a face view of a fabric constructed in accordance with the invention.
- Fig. 2 is an enlarged cross sectional view on the line 2 2 of Fig. 1 and Fig. 3 is a greatly enlarged, side view of one of the light, line, locking yarns shown in Fig. 1.
- 20 is a loosely woven textile fabric having a warp 21 containing the bulk of the fabric and a weft 22 in which the filling yarns are so light, fine and widely spaced as to constitute almost no United States Patent() 2,887,132 ⁇ Patented May 19, 1959 bulk.
- the warp 211 is formed of a plurality of relatively wide and flat warp yarns such as 23, 24 and 25, which are closely spaced to each other.
- Each warp yarn such as 23 is formed by a multiplicity of strands of continuous filament glass fibres and each such filament is formed of several hundred individual filamentary hbres as fine as gosssamer and so fine as to be almost invisible.
- the warp yarns 23 are often untwisted whereby the thousands of continuous lamentary glass fibres in. the warp form what isi known asV a unidirectional glass fibre fabric.
- the glass fibres are exceedingly smooth and slippery tending to easily slip on each other and pull apart while the yarns tend to easily shift laterally or crosswise of their length when woven with a plainu weave or otherwise.
- the weft- 22 of the fabric 20" is preferably formed of a plurality of pairs such as 27 of relatively fine filling yarns such as 30, 31, 32 and 33, the pairsbeing widely spaced from each other.
- the pairs of filling yarns are spaced apart a distance equal to the width of several weft yarns, as shown, to reduce the filling bulk of the fabric and serve as the minimum lateral connection between the weft yarns.
- each filling yarn is of a cross sectional area considerably less than one tenth the cross sectional area of the warp yarns for the same reasons.
- a typical fabric such as that shown, may have warp yarns of about a quarter inch in width and so fiat as to be less than lie. inches in thickness while the diameter of the filling yarns may be less than 1450th of an inch.
- Each weft yarn such as 30, 31, 32 and 33 is provided with spaced protuberances therealong as best shown in Fig. 3 at 34, 35 and 36.
- the protuberances such as 34, 35 and 36 are of irregular, non symmetrical configuration, randomly spaced along, and randomly distributed around, the weft yarn.
- a glass filament thread beaded with vinyl plastic is preferred for such weft yarns, although other threads having longitudinally spaced irregularities of a relatively hard rather than soft nature may, at least partially, accomplish the purpose.
- the warp 21 and weft 22 including the weft yarn protuberances are colorless and transluscent in order that the structure of the fabric appears to be a plain Weave and the protuberances blend into the background to the point of near disappearance.
- the fabric 20 may be cut weftwise or warpwise without the use of adhesive strips bonded yarns or lockweaves without falling apart or fraying, and without adversely affecting the molding process. Lateral cuts may be made between the filling yarns such as 30 and 31 of each pair and longitudinal cuts do not tend to destroy the fabricl because of the presence of the locking weft yarns. If desired, a plurality of yarns such as 30 and 31 could be woven into the fabric warpwise to create a grid of such yarns but in practice this has not been found essential or especially desirable.
- a substantially unidirectional woven textile fabric comprising a Warp formed of a plurality of relatively wide and flat warp yarns, closely spaced to each other, each said yarn having a multiplicity of strands and each strand having a multiplicity of continuous lament glass bres whereby said fabric is substantially composed of unidirectionally running, continuous glass iibre filaments and a weft formed of a plurality of relatively fine lilling yarns widely spaced from each other, each said filling yarn having spaced protuberances therealong serving to lock said warp yarns in place and prevent slippage thereof.
- said iilling yarns are spaced apart a distance equal to the width of several weft yarns and are of a cross sectional area less than one tenth the cross sectional arca of said warp yarns.
- each said filling yarn has randomly spaced protuberances and said filling yarns are Woven in pairs of closely spaced picks with the pairs of picks widely spaced from each other.
- a unidirectional woven fabric of glass fibres adapted to be cut into strips without slippage, said fabric comprising a warp of filamentary glass fibres al1 running in the same direction and constituting the major bulk of the material of the fabric and a weft of ne, widely spaced, filling yarns, each said lling yarn having randomly spaced integral protuberances therealong for frictionally retaining said glass bres in place proximate cut lines in said fabric.
- a woven textile fabric of unidirectional construction comprising a warp of coarse yarn formed of unidirectional, continuous filament, glassfbres and a weft of iine yarn having integral protuberances distributedtherealong for locking said glass fibre yarns in place.
Description
This invention relates to an improved unidirectional,
y woven, textile fabric formed of glass fibres or the like'.
Such fabric is s'ed as a reinforcement in molded plastic articles, for example in chemical tanks, pipes, boats, etc.,
Vand is usually made in webs of` twelve or less feet inrwidth -on a loom. The fabric is loosely Woven with `the warp containing the bulk of the fibres and the filling being widely spaced, light, fine yarns.
Glass fibre strands are smooth and slippery so that when a web of the unidirectional fabric is cut into smaller pieces for molding, the material tends to fall apart along the cut, or selvage, edges. Even before cutting there is a marked tendency for the warp yarns to shift laterally.
Various expedients have heretofore been proposed to maintain the glass fibre strands in place in such fabric. For example, a strip has been adhered to the fabric along proposed cut lines so that the two cut portions of the strip will form a false selvage. Such a strip tends, however, to adversely affect the molded plastic. It has been proposed to weave the filling threads with a leno weave, for locking the glass fibres in place, but leno weaving attachments are complicated and add to the cost of the fabric. It has been further proposed to weave a pair of yarns, with a leno weave, along the proposed cut lines or to apply a pair of adhesive yarns along the proposed cut lines. This procedure presupposes that the weaver knows where the cut lines are to be, which is not always the case, and usually requires means on the loom for curing the adhesive by heat or otherwise.
The principal object of this invention is to provide a woven fabric of unidirectional glass fibres in which the widely spaced, fine weft fibres lock the warp in place without adhesive, heat bonding, extra strips or other additional weaving steps.
AAnother object of the invention is to provide a woven fabric of unidirectional glass fibres in which drapability and cutting capability is maintained while retaining the loose weave of the material.
A further object of the invention is to provide a woven fabric of unidirectional glass fibres in which the glass fibres throughout the length of the Warp are prevented from shifting, slipping, fraying or pulling apart by widely spaced, fine yarns having randomly spaced irregularities in cross section and running either warp Wise or weft wise, or both.
Other objects and advantages of the invention will be apparent from the claims, the description of the drawing, and from the drawing in which:
Fig. 1 is a face view of a fabric constructed in accordance with the invention.
Fig. 2 is an enlarged cross sectional view on the line 2 2 of Fig. 1 and Fig. 3 is a greatly enlarged, side view of one of the light, line, locking yarns shown in Fig. 1.
As shown in the drawings, 20 is a loosely woven textile fabric having a warp 21 containing the bulk of the fabric and a weft 22 in which the filling yarns are so light, fine and widely spaced as to constitute almost no United States Patent() 2,887,132 `Patented May 19, 1959 bulk. The warp 211 is formed of a plurality of relatively wide and flat warp yarns such as 23, 24 and 25, which are closely spaced to each other. Each warp yarn such as 23 is formed by a multiplicity of strands of continuous filament glass fibres and each such filament is formed of several hundred individual filamentary hbres as fine as gosssamer and so fine as to be almost invisible. The warp yarns 23 are often untwisted whereby the thousands of continuous lamentary glass fibres in. the warp form what isi known asV a unidirectional glass fibre fabric. The glass fibres are exceedingly smooth and slippery tending to easily slip on each other and pull apart while the yarns tend to easily shift laterally or crosswise of their length when woven with a plainu weave or otherwise.
,The weft- 22 of the fabric 20" is preferably formed of a plurality of pairs such as 27 of relatively fine filling yarns such as 30, 31, 32 and 33, the pairsbeing widely spaced from each other. Preferably the pairs of filling yarns are spaced apart a distance equal to the width of several weft yarns, as shown, to reduce the filling bulk of the fabric and serve as the minimum lateral connection between the weft yarns. Preferably also, each filling yarn is of a cross sectional area considerably less than one tenth the cross sectional area of the warp yarns for the same reasons. For example, a typical fabric, such as that shown, may have warp yarns of about a quarter inch in width and so fiat as to be less than lie. inches in thickness while the diameter of the filling yarns may be less than 1450th of an inch.
Each weft yarn such as 30, 31, 32 and 33 is provided with spaced protuberances therealong as best shown in Fig. 3 at 34, 35 and 36. Preferably the protuberances such as 34, 35 and 36 are of irregular, non symmetrical configuration, randomly spaced along, and randomly distributed around, the weft yarn. A glass filament thread beaded with vinyl plastic is preferred for such weft yarns, although other threads having longitudinally spaced irregularities of a relatively hard rather than soft nature may, at least partially, accomplish the purpose.
Spaced pairs of filling threads, or picks, are used to secure a better scattering of the protuberances, thereby increasing the locking eEect of the weft yarns, but as shown at 40 in Fig. l a single yarn similar to yarns 30, 31, 32 and 33 may be used if desired. It should be noted that, unlike slub yarns which are sometimes used to vary the design effect of woven fabrics by providing spaced irregularities of thickness in the soft fibres of a warp or weft yarn, the protuberances 34, 35 and 36 are hard and so small as to be almost imperceptible to the eye. They thus have little or no design effect but serve to form a roughened surface which creates frictional resistance to the lateral shifting of the glass fibres as well as forming an actual barrier or abutment to such shifting.
Preferably the warp 21 and weft 22 including the weft yarn protuberances are colorless and transluscent in order that the structure of the fabric appears to be a plain Weave and the protuberances blend into the background to the point of near disappearance. The fabric 20 may be cut weftwise or warpwise without the use of adhesive strips bonded yarns or lockweaves without falling apart or fraying, and without adversely affecting the molding process. Lateral cuts may be made between the filling yarns such as 30 and 31 of each pair and longitudinal cuts do not tend to destroy the fabricl because of the presence of the locking weft yarns. If desired, a plurality of yarns such as 30 and 31 could be woven into the fabric warpwise to create a grid of such yarns but in practice this has not been found essential or especially desirable.
We claim:
1. A substantially unidirectional woven textile fabric comprising a Warp formed of a plurality of relatively wide and flat warp yarns, closely spaced to each other, each said yarn having a multiplicity of strands and each strand having a multiplicity of continuous lament glass bres whereby said fabric is substantially composed of unidirectionally running, continuous glass iibre filaments and a weft formed of a plurality of relatively fine lilling yarns widely spaced from each other, each said filling yarn having spaced protuberances therealong serving to lock said warp yarns in place and prevent slippage thereof.
2. A combination as specified in claim 1 wherein said warp yarns and said weft yarns are both colorless and translucent, whereby said protubera'nces are substantially imperceptible to the eye.
3. A combination as specified in claim 1 wherein said iilling yarns are spaced apart a distance equal to the width of several weft yarns and are of a cross sectional area less than one tenth the cross sectional arca of said warp yarns.
4. A combination as specified in claim 1 wherein each said filling yarn has randomly spaced protuberances and said filling yarns are Woven in pairs of closely spaced picks with the pairs of picks widely spaced from each other.
5. A unidirectional woven fabric of glass fibres adapted to be cut into strips without slippage, said fabric comprising a warp of filamentary glass fibres al1 running in the same direction and constituting the major bulk of the material of the fabric and a weft of ne, widely spaced, filling yarns, each said lling yarn having randomly spaced integral protuberances therealong for frictionally retaining said glass bres in place proximate cut lines in said fabric.
6. A woven textile fabric of unidirectional construction, said fabric comprising a warp of coarse yarn formed of unidirectional, continuous filament, glassfbres and a weft of iine yarn having integral protuberances distributedtherealong for locking said glass fibre yarns in place.
References Cited in the file of this patent UNITED STATES PATENTS 1,867,019 Meyer July 12, 1932 2,200,946 Bloch May 14, 1940 2,266,761 Jackson etal Dec. 23, 1'941 2,350,504 Geier et al June 6, 1944 i 2,526,738 Finlayson et al Oct. 24, 1950 FOREIGN PATENTS 1 L "731,119 Great Britain .Tune 1, 1955 France Aug. 28,` 1939
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US70147257 US2887132A (en) | 1957-12-09 | 1957-12-09 | Unidirectional woven fabric |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US70147257 US2887132A (en) | 1957-12-09 | 1957-12-09 | Unidirectional woven fabric |
Publications (1)
Publication Number | Publication Date |
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US2887132A true US2887132A (en) | 1959-05-19 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US70147257 Expired - Lifetime US2887132A (en) | 1957-12-09 | 1957-12-09 | Unidirectional woven fabric |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3100004A (en) * | 1961-12-18 | 1963-08-06 | Woven Arts Corp | Woven article of manufacture having relatively stiff weft and method of making same |
US3881522A (en) * | 1972-09-13 | 1975-05-06 | Kaiser Glass Fiber Corp | Unidirectional webbing material |
US3919028A (en) * | 1972-09-13 | 1975-11-11 | Kaiser Glass Fiber Corp | Method of making unidirectional webbing material |
US3930091A (en) * | 1972-09-13 | 1975-12-30 | Kaiser Glass Fiber Corp | Unidirectional webbing material |
US4349198A (en) * | 1980-12-08 | 1982-09-14 | Stelck Larry W | String for sporting goods |
EP0193478A1 (en) * | 1985-02-22 | 1986-09-03 | ETABLISSEMENTS LES FILS D'Auguste CHOMARAT et Cie Société anonyme | Textile reinforcement for the manufacture of layered products |
US5126191A (en) * | 1989-12-22 | 1992-06-30 | Establissements Les D'auguste Chomarat Et Cie | Process for the production of a textile reinforcing web for composite materials based on resins and new type of web |
FR2698640A1 (en) * | 1992-11-30 | 1994-06-03 | Brochier Sa | Warp and weft fabric based on multifilament technical yarns predominantly without torsion and method of production. |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1867019A (en) * | 1930-01-14 | 1932-07-12 | Aubrey E Meyer | Textile fabric and art of forming it |
FR849842A (en) * | 1938-02-04 | 1939-12-02 | Saint Gobain | Process for manufacturing artificial mineral fibers, more particularly glass fibers, with a rough surface |
US2200946A (en) * | 1937-09-16 | 1940-05-14 | Bloch Godfrey | Fabric-making material |
US2266761A (en) * | 1940-04-16 | 1941-12-23 | American Reenforced Paper Co | Fibrous sheet |
US2350504A (en) * | 1943-07-16 | 1944-06-06 | Ernest C Geier | Yarn |
US2526738A (en) * | 1945-09-12 | 1950-10-24 | Celanese Corp | Woven fabric |
GB731119A (en) * | 1953-05-06 | 1955-06-01 | Glass Fabrics Ltd | Improvements relating to glass fabrics |
-
1957
- 1957-12-09 US US70147257 patent/US2887132A/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1867019A (en) * | 1930-01-14 | 1932-07-12 | Aubrey E Meyer | Textile fabric and art of forming it |
US2200946A (en) * | 1937-09-16 | 1940-05-14 | Bloch Godfrey | Fabric-making material |
FR849842A (en) * | 1938-02-04 | 1939-12-02 | Saint Gobain | Process for manufacturing artificial mineral fibers, more particularly glass fibers, with a rough surface |
US2266761A (en) * | 1940-04-16 | 1941-12-23 | American Reenforced Paper Co | Fibrous sheet |
US2350504A (en) * | 1943-07-16 | 1944-06-06 | Ernest C Geier | Yarn |
US2526738A (en) * | 1945-09-12 | 1950-10-24 | Celanese Corp | Woven fabric |
GB731119A (en) * | 1953-05-06 | 1955-06-01 | Glass Fabrics Ltd | Improvements relating to glass fabrics |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3100004A (en) * | 1961-12-18 | 1963-08-06 | Woven Arts Corp | Woven article of manufacture having relatively stiff weft and method of making same |
US3881522A (en) * | 1972-09-13 | 1975-05-06 | Kaiser Glass Fiber Corp | Unidirectional webbing material |
US3919028A (en) * | 1972-09-13 | 1975-11-11 | Kaiser Glass Fiber Corp | Method of making unidirectional webbing material |
US3930091A (en) * | 1972-09-13 | 1975-12-30 | Kaiser Glass Fiber Corp | Unidirectional webbing material |
US4349198A (en) * | 1980-12-08 | 1982-09-14 | Stelck Larry W | String for sporting goods |
EP0193478A1 (en) * | 1985-02-22 | 1986-09-03 | ETABLISSEMENTS LES FILS D'Auguste CHOMARAT et Cie Société anonyme | Textile reinforcement for the manufacture of layered products |
US5126191A (en) * | 1989-12-22 | 1992-06-30 | Establissements Les D'auguste Chomarat Et Cie | Process for the production of a textile reinforcing web for composite materials based on resins and new type of web |
FR2698640A1 (en) * | 1992-11-30 | 1994-06-03 | Brochier Sa | Warp and weft fabric based on multifilament technical yarns predominantly without torsion and method of production. |
WO1994012708A1 (en) * | 1992-11-30 | 1994-06-09 | Brochier S.A. | Warp and weft fabric based on predominantly untwisted multifilament yarn and method for producing same |
US5732748A (en) * | 1992-11-30 | 1998-03-31 | Brochier S.A. | Composite material fabric based on predominantly untwisted coarse multifilament warp & weft threads |
US5939338A (en) * | 1992-11-30 | 1999-08-17 | Brochier S.A. | Warp and weft fabric based on predominantly untwisted multifilament technical threads and method for producing same |
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