AU619040B2 - Fine denier two component corespun yarn for fire resistant safety apparel and method - Google Patents
Fine denier two component corespun yarn for fire resistant safety apparel and method Download PDFInfo
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- AU619040B2 AU619040B2 AU40948/89A AU4094889A AU619040B2 AU 619040 B2 AU619040 B2 AU 619040B2 AU 40948/89 A AU40948/89 A AU 40948/89A AU 4094889 A AU4094889 A AU 4094889A AU 619040 B2 AU619040 B2 AU 619040B2
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- Australia
- Prior art keywords
- fibers
- core
- temperature resistant
- corespun yarn
- fine denier
- Prior art date
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- Ceased
Links
- 230000009970 fire resistant effect Effects 0.000 title claims description 15
- 238000000034 method Methods 0.000 title description 6
- 239000000835 fiber Substances 0.000 claims description 80
- 229920000742 Cotton Polymers 0.000 claims description 17
- 239000004760 aramid Substances 0.000 claims description 9
- 229920006231 aramid fiber Polymers 0.000 claims description 8
- 229920000271 Kevlar® Polymers 0.000 claims description 7
- 239000004761 kevlar Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 229920006376 polybenzimidazole fiber Polymers 0.000 claims description 5
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 4
- 239000004744 fabric Substances 0.000 description 58
- 238000010042 air jet spinning Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 5
- 239000003063 flame retardant Substances 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 210000002268 wool Anatomy 0.000 description 4
- 229920000784 Nomex Polymers 0.000 description 3
- 239000004693 Polybenzimidazole Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004763 nomex Substances 0.000 description 3
- 229920002480 polybenzimidazole Polymers 0.000 description 3
- FPJNQQRSBJPGHM-UHFFFAOYSA-N 1-chloro-2-nitropropane Chemical compound ClCC(C)[N+]([O-])=O FPJNQQRSBJPGHM-UHFFFAOYSA-N 0.000 description 2
- 229920002821 Modacrylic Polymers 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- -1 wool Polymers 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 102100025800 E3 SUMO-protein ligase ZBED1 Human genes 0.000 description 1
- 101000786317 Homo sapiens E3 SUMO-protein ligase ZBED1 Proteins 0.000 description 1
- 241001304248 Progne modesta Species 0.000 description 1
- 101150110302 RND3 gene Proteins 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 238000012093 association test Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000010040 friction spinning Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000000699 topical effect Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/36—Cored or coated yarns or threads
- D02G3/367—Cored or coated yarns or threads using a drawing frame
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/38—Threads in which fibres, filaments, or yarns are wound with other yarns or filaments, e.g. wrap yarns, i.e. strands of filaments or staple fibres are wrapped by a helically wound binder yarn
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/443—Heat-resistant, fireproof or flame-retardant yarns or threads
-
- 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
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/01—Natural vegetable fibres
- D10B2201/02—Cotton
-
- 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
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/10—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of unsaturated nitriles, e.g. polyacrylonitrile, polyvinylidene cyanide
-
- 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
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
- D10B2331/021—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides aromatic polyamides, e.g. aramides
-
- 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
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/14—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polycondensates of cyclic compounds, e.g. polyimides, polybenzimidazoles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Description
company and SignatuirCS Of its Officers aa prescriljod uy Its Articl es of As otWIon.
Ian A. Scott Registered Patent Attorney THlE COMMISSIONER OF 'PATENTS.
COMMONWEALTH OF AUISTRAL 6 1 9 0~ 4 Qjorm PATENTS ACT 1952-69 COMPLETE SPECIFICATION
(ORIGINAL)
Class I t. Class Application Number: Lodged: *Cdmplete Specification Lodged: 0 4 r '6Jel at ed A rt Accepted: Published- 4 'arhe of Applicant: 4 dc!iess of Applicant Actital Inventor: Address for Service: SPRINGS INDUSTRIES, INC.
Fort Mill, South Car' rn 29715, United States of America TERRY 0. MONTGOMERY and WILLIAM G. MARTIN NWbM flXjG0 aemr Patent Trademark Attorneys 50 QUEEN STREET, MELBOURNE, AUSTRALIA, 3000.
Complete Specification for the invention entitled: FINE DENIER TWO COMPONENT CORESPUN YARN FOR FIRE RESISTANT SAFETY APPAREL AND MEIHOD The following statement is a full description of this invention, including the best method of performing it known to FINE DENIER TWO COMPONENT CORESPUN YARN FOR FIRE RESISTANT SAFETY APPAREL AND METHOD to o Field of the Invention -oo This invention relates generally to fine ono denier two component corespun yarn for forming fabric useful in the production of fire resistant safety 5 apparel and to the method of forming the corespun yarn, and more particularly to such a corespun yarn which includes a core of high temperature resistant fibers and a core wrapper of low temperature resistant fibers o a surrounding and covering the core.
a0 1 0 BackQround of the Invention a fbc It is generally known to form heat resistant oo fabrics of various types of yarns. For example, hazardous industrial work uniforms, firefighter uniforms, and military protective uniforms have been formed of fabrics fabricated of yarns formed of nonsynthetic fibers, such as cotton or wool. These fabrics are then topically treated with conventional halogen-based and/or phosphorous-based fire retarding chemicals. However, uniforms formed of this type of fabric have a limited wear life, and are heavier in weight than non-flame retardant uniform fabrics, the chemical treatment typically adding about 15% to 20% to the weight of the fabric. When this type of fabric is burned, it forms brittle chars which break away with movement of the fabric.
I ci-- -2i Also, it is known to form fire resistant safety apparel of fabrics fabricated of yarns formed entirely of nonburning or high temperature resistant fibers or blends of nonburning fibers, such as Nomex, Kevlar or PBI. These fabrics do exhibit thermal stability but are very expensive to produce, and do not have the comfort, moisture absorbency, and dyeability characteristics of fabrics formed of natural fiber yarns.
U.S. Patent Nos. 4,381,639; 4,500,593; and 4,670,327 disclose yarns for forming heat resistant o fabrics which include a core of continuous glass 0o' filaments covered by a layer of heat-resisting aramid o fibers. However, the yarns and fabrics disclosed in S 15 these patents are very expensive to produce because of the high cost of the fibers required to produce these yarns and fabrics. Also, the yarns and fabrics disclosed in these patents have the surface characteristics of the aramid fibers so that these fabrics do not have the desirable surface SB characteristics of dyeability and comfort of fabrics 99 Sformed of conventional natural fibers, such as cotton, wool or the like.
U.S. Patent No. 4,331,729 discloses a heat resistant fabric formed of a yarn including a core of carbon filaments and a cover of aramid fibers. The o yarn and heat resistant fabric disclosed in this patent also includes the same type of disadvantages as pointed out in the above discussion of prior art patents.
Cpnding U.S. .ppl ication Serial No.
S-2-88,682, filed Deember 22, -198-, discloses a three component corespun yarn for forming fabric useful in the production of fire resistant safety apparel. The three component corespun yarn of our- copending applicat-ion includes a core of high temperature resistant fibers, a core wrapper of low temperature resistant fibers, and an outer sheath of low 3 temperature resistant fibers. This three component corespun yarn, as disclosed in US Patent No. 5033262, is spun on a DREF friction spinning apparatus and the finest yarn counts obtained using this apparatus have been 14/1 cotton count (equivalent to 380 denier). While this three component corespun yarn provides excellent fire resistance, dyeability and comfort to fabrics formed therefrom, there are times when it is desirable to produce fine textured fabrics of corespun yarns having finer yarn counts.
Summary of the Invention With the foregoing in mind, it is an object of the present invention to provide a fine denier two component corespun yarn for forming a fine textured fabric useful in the 1 0 production of fire resistant safety apparel having the appearance, feel, dyeability, and comfort characteristics of conventional types of fabrics formed of conventional natural fibers and not including fire resistant characteristics.
The fine denier two component corespun yarn of the present invention includes a S core of high temperature resistant fibers, and a core wrapper or outer sheath of low S1 5 temperature resistant fibers surrounding and covering the core. The high temperature 0resistant fibers forming the core are aramid fibers, such as Kevlar or Nomex, or o0 polybenzimidazole fibers, such as PBI, or heat stabilized/oxidized polyacrylonitrile fibers, such as Panox by RK Textiles, Ltd., and Lastan®by Asahi Chemical Co. The low temperature resistant fibers of the core wrapper may be either natural or synthetic, such as cotton, wool, polyester, modacrylic, or blends of these fibers. Fine denier S corespun yarns of the present invention have been produced in cotton count sizes of 22/1 (242 denier), 20/1 (266 denier), and 18/1 (295 denier).
The core of high temperature resistant fibers constitutes about 20% to 25% of the total weight of the 0 -4corespun yarn, and the core wrapper of low temperature resistant fibers constitutes about 80% to 75% of the total weight of the corespun yarn. It is preferred that the high temperature resistant fibers of the core constitute about 20% of the total weight while the core wrapper of low temperature resistant fibers constitute about 80% of the total weight.
The corespun yarn is preferably formed on a MURATA air jet spinning apparatus (MJS) in which the high temperature resistant fibers of the core and the low temperature resistant fibers of the core wrapper are fed together through the entrance end of a feed i trumpet. The fibers then pass through a drafting section, through oppositely directed air jet nozzles, 15 and then wound onto a take-up package. The air jet 3 nozzles cause the core wrapper of low temperature Sresistant fibers to surround and cover the core so that the yarn and the fabric produced therefrom have the surface characteristics of the low temperature q 20 resistant fibers forming the core wrapper while the yarn has very little, if any, twist, torque and liveliness.
When fabrics formed of the fine denier corespun yarn of the present invention are exposed to flame and high heat, the core sheath of low temperature resistant staple fibers surrounding and covering the core are charred and burned but remain in position around the fiberglass core to provide a thermal insulation barrier. The core of high temperature of organic low temperature resistant fibers has burned away and the core forms a lattice upon which the char remains to block flow of oxygen and other gases while the survival of the supporting lattice provides a structure which maintains the integrity of the fabric after the core wrapper of organic low temperature resistant fibers have been burned and charred.
.7.7 .7 0.0 S00 OnoO On a0..7 0 .7 .7 4 0 .7 O 0. 00 Since the corespun yarn of the present invention contains a small percentage by weight of the expensive high temperature resistant fibers, preferably about 20%, the corespun yarn of the present invention can be produced at a much more economical cost than fire resistant fabrics formed of yarns including large percentages by weight of expensive high temperature resistant fibers. For example, the high temperature resistant fibers of the core cost about 9 to 10 dollars 10 per pound while the cotton fibers of the core wrapper cost about 60 to 80 cents per pound. Thus, by using about 80% cotton fibers, a substantial savings is realized in the cost of producing the corespun yarn of the present invention.
15 When fabrics formed of the corespun yarn of the present invention are exposed to high heat and flame, the core wrapper fibers are charred but remain in position around the high temperature resistant core to provide a thermal insulation barrier. This provides an insulating air layer between the skin and the fabric. This characteristic is important in a fire situation in which a firefighter wearing a shirt or a hood made from this fabric would continue to be thermally protected by the insulating air layer between 25 his clothing and skin, which remains intact even though the core wrapper fibers will become charred.
Fabrics woven or knit from the corespun yarns of the present invention may be dyed, printed and topically treated with conventional flame retardant chemicals in a manner similar to the flame retardant treatment applied to fabrics produced of 100% cotton fibers. However, the weight added to the fabric by the flame retardant treatment is substantially reduced, to about 10% to 12%, because the core of high temperature resistant fibers does not absorb the flame retardant chemicals. The fabric formed of the corespun yarn of the present invention does not melt, drip, or exhibit -6afterflame or afterglow when burned. The charred outer portion of the fabric maintains the flexibility and integrity of the unburned portion of the fabric.
Brief Description of the Drawings Other objects and advantages will appear as the des-ription proceeds when taken in connection with the accompanying drawings, in which Figure 1 is a greatly enlarged view of a fragment of the corespun yarn of the present invention with portions of the core wrapper being removed at one end portion thereof; Figure 2 is a fragmentary schematic isometric 9 t 15 (3*7 r r trl rI *t view of a portion of a Murata air jet spinning apparatus of the type utilized in forming the fine denier corespun yarn of the present invention; and Figure 3 is a greatly enlarged isometric view of a fragmentary portion of a fabric knit of the corespun yarn of Figure 1.
nc;c-ri+i f- -P 4-P- D frre Tmhnrimen+ The fine denier corespun yarn of the present Sinvention, broadly indicated at 10 in Figure 1, includes a core 11 of high temperature resistant fibers, and a core wrapper 12 of low temperature resistant fibers surrounding and covering the core 11.
As illustrated in Figure 1, the high temperature resistant fibers of the core 11 extend generally in an axial direction and longitudinally of the corespun yarn while the majority of the low temperature resistant fibers of the core wrapper 12 extend in a spiral direction around the core 11. A minor portion of the low temperature resistant fibers of the core wrapper 12 are separated and form a binding wrapper spirally wrapped around the majority of the fibers, as indicated at 13. Since the core wrapper 12 of low temperature resistant staple fibers surrounds and covers the core 11, the outer surface of the yarn has the appearance -7and general characteristics of the low temperature resistant staple fibers forming the core shrath 12.
The high temperature resistant fibers of the core 11 are selected from the group consisting essentially of aramid fibers, such as Kevlar and Nomex, and polybenzimidazole fibers, such as PBI, or heat stabilized/oxidized polyacrylonitrile fibers, such as Panox® by RK Textiles, Ltd., and Lastan® by Asahi Chemical Co., or a mixture or blend of these fibers.
The low temperature resistant fibers of the core wrapper 12 may be either natural or synthetic, such as cotton, wool, polyester, modacrylic, rayon, or blends 1i of these fibers.
The core 11 of high temperature resistant til 15 fibers constitutes about 20% to 25% of the total weight of the corespun yarn 10 and the core wrapper 12 of low temperature resistant fibers constitutes about 80% to of the total weight of the corespun yarn 10. It is ipreferred that the high temperature resistant fibers of the core 11 constitute about 20% of the total weight and the core wrapper 12 of low temperature resistant fibers constitute about 80% of the total weight. The core 11 may be formed entirely of aramid fibers or may be formed of a blend of these fibers with polybenzimidazole fibers. The core wrapper 12 surrounds and covers the core 11 so that the fibers forming the core 11 are completely hidden from view in the fabric produced of this yarn.
As pointed out above, the corespun yarn 10 of i 30 the present invention is preferably produced on a ''Murata air jet spinning apparatus of the type illustrated schematically in Figure 2. The Murata air jet spinning apparatus is disclosed in numerous patents, including U.S. Patent Nos. 4,718,225; 4,551,887; and 4,497,167. As schematically illustrated in Figure 2, the air jet spinning apparatus includes an entrance trumpet 15 into which the high temperature 1I* 7 -8- 11 ti resistant core 11 is fed along with a sliver of low temperature resistan" staple fibers 12 to form a cor6e.
wrapper surrounding and covering the core. The fibers are then passed through a set of drafting rolls 16, a 5 first fluid swirling air jet nozzle 17, and a second fluid swirling air jet nozzle 18. The spun yarn is then drawn from the second fluid swirling nozzle 18 by a delivery roll assembly 19 and is wound onto a take-up package, not shown. The first and second fluid swirling nozzles or air jets 17, 18 are constructed to produce swirling fluid flows in opposite directions, as schematically illustrated in Figure 2. The action of the oppositely operating air jets 17, 18 causes a minor portion of the staple fibers to separate and wind around the unseparated staple fibers and the wound staple fibers maintain the core sheath 12 in close contact surrounding and covering the core 11.
The following nonlimiting example is set forth to demonstrate one of the types of corespun yarns which have been produced in accordance with the present invention.
One end of .50 hank roving of high temperature resistant Kevlar fibers 11, providing a weight necessary to achieve 20% in overall yarn weight, is fed into the entrance end of the entrance trumpet At the same time, one end of 100% carded cotton sliver, providing a weight necessary to achieve 80% in overall yarn weight, is also fed into the entrance end of the trumpet 15. The core 11 is fed onto the top of the cotton sliver 12 so that the cotton fibers are spun around the core. The fine denier corespun yarn achieved by this air jet spinning process is then knit in a plain jersey construction fabric 20, as illustrated in Figure 3. The corespun yarn 10 forms successive courses of stitch loops in the fabric This knit fabric 20 is particularly suitable for use in forming a protective hood or undergarments I I a 1 -9- It I I r I for firefighters and may be dyed, subjected to a topical fire resistant chemical treatment, and then subjected to a conventional durable press resin finish, if desired. This knit fabric has the feel and surface characteristics of a similar type of knit fabric formed of 100% cotton fibers while having the desirable fire resistant characteristics not present in knit fabric formed entirely of cotton fibers.
When this fire resistant knit fabric is subjected to a National Fire Prevention Association Test Method (NFPA 701), which involves a vertical burn of 12 second duration to a Bunsen burner flame, the fabric exhibits char lengths of less than 1.5 inches with no afterflame or afterglow. In accordance with 15 Federal Test Method 5905, a vertical burn of two 12 second exposures to a high heat flux butane flame shows 22% consumption with 0 seconds afterflame, as compared with 45% consumption and 6 seconds afterglow for a similar type of knit fabric of similar weight and construction formed entirely of cotton fibers and having a fire resistant chemical treatment. Throughout all burn tests, the areas of the fabric char remain flexible and intact, exhibiting no brittleness, melting, or fabric shrinkage. While the core wrapper of cotton fibers is burned and charred, the charred portions remain in position surrounding the core of high temperature resistant Kevlar fibers to provide a thermal insulation barrier and the Kevlar core provides a motrix or lattice which prevents destruction of the 30 fabric. The insulation barrier prevents penetration of the flame through the fabric to the skin of th- wearer of this hood.
In the fabric used for forming fire resistant safety apparel, as disclosed in the present application, the corespun yarn 10 includes two components, namely, a core 11 of high temperature resistant fibers with the fibers extending primarily in ii js i i j fB t:i 6~1 a ;1 "r I- 1.
0 00oo 0 0 0 00 0000 0 0000 0300 00 0 0 000 0000 0 00 0 0 00 0 00 0000 b0 0 an axial or longitudinal direction of the yarn, and a core wrapper 12 of low temperature resistant fibers surrounding and covering the core 11 and with the fibers extending primarily in a spiraled direction around the core 11. The high temperature resistant fibers of the core 11 are selected from the group consisting essentially of aramid fibers, polybenzimidazole fibers and heat stabilized/oxidized polyacrylonitrile fibers and the core 11 remains intact even when the fabric formed of this yarn is subjected to a high temperature flame. The fibers of the core wrapper 12 surround and cover the core 11. The fibers of the core wrapper 12 provide the desired surface characteristics to the fabric formed of these corespun yarns. When a fabric formed of the present corespun yarn is subjected to high temperature flame environment, the fibers of the core wrapper 12 are burned and become charred but remain in position around the core 11 and maintain substantially the same flexibility and integrity as the unburned fabric.
In the drawings and specification there has been set forth the best mode presently contemplated for the practice of the present invention, and although specific terms are employed, they are used in a generic and descriptive sense only and not for purposes of limitation, the scope of the invention being defined in the claims.
0 0 0 0 0
Claims (6)
1. A fine denier corespun yarn for forming fire resistant safety apparel characterized by a core of high temperature resistant fibers selected from aramid fibers, polybenzimidazole fibers, and heat stabilized/oxidized polyacrylonitrile fibers or mixtures thereof and a core wrapper of low temperature resistant fibers surrounding and covering said core.
2. A fine denier corespun yarn according to Claim 1 wherein said core of high temperature resistant fibers constitutes about 20% to 35% of the total weight of said corespun yarn, and wherein said core wrapper of low temperature resistant fibers constitutes about 80% to 75% of the total weight of said corespun yarn.
3. A fine denier corespun yarn according to Claim 2 wherein said core of high temperature resistant fibers constitutes about 20% of the total weight of said corespun 0o o yarn, and wherein said core wrapper of low temperature resistant fibers constitutes about 80% of the total weight of said corespun yarn.
4. A fine denier corespun yarn according to Claim 1 wherein said core comprises aramid fibers. o06o00 6 0 o
5. A fine denier corespun yarn according to Claim 1 wherein said core wrapper comprises cotton fibers. o C 0 0.o o0
6. A fine denier corespun yarn according to Claim 4 wherein said core comprises Kevlar fibers. J A. DATED this 24th day of October, 1991. SPRINGS INDUSTRIES.INC. WATERMARK PATENT TRADEMARK ATTORNEYS 290 BURWOOD ROAD HAWTHORN, VIC. 3122. -l 7A
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US31037889A | 1989-02-15 | 1989-02-15 | |
| US310378 | 1989-02-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU4094889A AU4094889A (en) | 1990-08-16 |
| AU619040B2 true AU619040B2 (en) | 1992-01-16 |
Family
ID=23202233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU40948/89A Ceased AU619040B2 (en) | 1989-02-09 | 1989-09-01 | Fine denier two component corespun yarn for fire resistant safety apparel and method |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0385024A1 (en) |
| JP (1) | JPH02221432A (en) |
| KR (1) | KR930006013B1 (en) |
| CN (1) | CN1044963A (en) |
| AU (1) | AU619040B2 (en) |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0548474B1 (en) * | 1991-12-11 | 1997-03-26 | Nitto Boseki Co., Ltd. | Fusible adhesive yarn and process for its manufacture |
| EP0962563A1 (en) * | 1998-06-03 | 1999-12-08 | Ferlam Technologies | Method and device for making a yarn having as base mica and fabric produced out of this yarn |
| EP0962313B1 (en) * | 1998-06-05 | 2006-08-16 | W.L. GORE & ASSOCIATES GmbH | Textile laminate |
| RU2176293C1 (en) * | 2000-10-23 | 2001-11-27 | АООТ "Центральный НИИ по переработке штапельных волокон" | Method for producing yarn from arselon fibers |
| RU2241082C1 (en) * | 2003-10-28 | 2004-11-27 | Закрытое акционерное общество "АСО" | Single yarn for textile articles |
| US20050208855A1 (en) * | 2004-03-18 | 2005-09-22 | Reiyao Zhu | Modacrylic/cotton/aramid fiber blends for arc and flame protection |
| US8932965B1 (en) | 2008-07-30 | 2015-01-13 | International Textile Group, Inc. | Camouflage pattern with extended infrared reflectance separation |
| US10433593B1 (en) | 2009-08-21 | 2019-10-08 | Elevate Textiles, Inc. | Flame resistant fabric and garment |
| RU2552248C2 (en) * | 2009-10-23 | 2015-06-10 | Инвиста Текнолоджиз С.А Р.Л. | Yarn and fabrics of fibre mixture containing oxidized polymer fibres |
| US8793814B1 (en) | 2010-02-09 | 2014-08-05 | International Textile Group, Inc. | Flame resistant fabric made from a fiber blend |
| US8209785B2 (en) | 2010-02-09 | 2012-07-03 | International Textile Group, Inc. | Flame resistant fabric made from a fiber blend |
| CN102181993A (en) * | 2011-03-17 | 2011-09-14 | 江苏唐工纺实业有限公司 | Flame-retardant covering yarn fabric and application thereof |
| CN102828312B (en) * | 2012-09-12 | 2015-05-20 | 常州科旭纺织有限公司 | Cut-resistant core-spun yarn and application thereof |
| CN103255521B (en) * | 2013-04-19 | 2015-09-02 | 晋江市闽高纺织科技有限公司 | A kind of fire resistance fibre blended yarn, preparation method and fabric thereof and fabric |
| CN104452007A (en) * | 2013-09-13 | 2015-03-25 | 常州科旭纺织有限公司 | High-performance core spun yarn and application thereof |
| CN104328582A (en) * | 2014-10-31 | 2015-02-04 | 上海特安纶纤维有限公司 | Regenerated flame-retardant heat-insulating yarn fabric and making method thereof |
| US10590567B2 (en) * | 2016-09-01 | 2020-03-17 | Dupont Safety & Construction, Inc. | Carbon-containing modacrylic and aramid bicomponent filament yarns |
| WO2019051543A1 (en) * | 2017-09-12 | 2019-03-21 | TIRANA Pty Ltd | Cover spun yarn and woven single layer denim fabric for motor garments |
| CN109468720A (en) * | 2018-12-13 | 2019-03-15 | 桐乡宝鼎纺织有限公司 | Blow spinning method used in Vinyon N and glass fiber package heart yarn |
| CN110453330B (en) * | 2019-08-22 | 2022-07-05 | 义乌市恒达织带有限公司 | Pre-oxidized fiber core-spun yarn and manufacturing method thereof |
| CN110656412A (en) * | 2019-08-26 | 2020-01-07 | 徐州锦业纺织科技有限公司 | Wear-resistant flame-retardant yarn |
| CN113355779A (en) * | 2021-05-28 | 2021-09-07 | 上海全科企业发展有限公司 | Covering yarn treatment process and application thereof |
| CN113550034A (en) * | 2021-07-22 | 2021-10-26 | 郑建国 | Antibacterial and anti-mite cotton fiber |
| WO2023178399A1 (en) * | 2022-03-24 | 2023-09-28 | Pustay Paulo Adriano | Textile fire extinguisher containing graphene |
| CN117966320A (en) * | 2024-01-17 | 2024-05-03 | 江苏浩业纤维科技有限公司 | High-core wool core-spun yarn and preparation method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8520318D0 (en) * | 1985-08-13 | 1985-09-18 | Ten Cate Over All Fabrics Bv | Flame resistant materials |
| NL8603023A (en) * | 1986-11-27 | 1988-06-16 | Wisselink S Textielfabrieken B | Thread with core of aromatic polyamide, encased in un:meltable fibre - for fabric with brief resistance to high heat |
| JPS63196741A (en) * | 1987-02-09 | 1988-08-15 | 東洋紡績株式会社 | Cloth for protecting heat |
-
1989
- 1989-09-01 AU AU40948/89A patent/AU619040B2/en not_active Ceased
- 1989-09-08 EP EP89309151A patent/EP0385024A1/en not_active Withdrawn
- 1989-10-11 JP JP1263125A patent/JPH02221432A/en active Pending
- 1989-10-19 KR KR1019890015042A patent/KR930006013B1/en not_active Expired - Fee Related
-
1990
- 1990-02-15 CN CN90100717A patent/CN1044963A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| AU4094889A (en) | 1990-08-16 |
| JPH02221432A (en) | 1990-09-04 |
| CN1044963A (en) | 1990-08-29 |
| KR930006013B1 (en) | 1993-07-01 |
| KR900013124A (en) | 1990-09-03 |
| EP0385024A1 (en) | 1990-09-05 |
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