EP4077781A1 - Flame resistant fabrics with increased strength - Google Patents
Flame resistant fabrics with increased strengthInfo
- Publication number
- EP4077781A1 EP4077781A1 EP20845465.2A EP20845465A EP4077781A1 EP 4077781 A1 EP4077781 A1 EP 4077781A1 EP 20845465 A EP20845465 A EP 20845465A EP 4077781 A1 EP4077781 A1 EP 4077781A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fabric
- yarns
- flame resistant
- fiber blend
- fibers
- 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.)
- Pending
Links
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
- D03D15/50—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 properties of the yarns or threads
- D03D15/513—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 properties of the yarns or threads heat-resistant or fireproof
-
- 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
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
- D03D13/004—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft with weave pattern being non-standard or providing special effects
-
- 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
- D03D15/283—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 synthetic polymer-based, e.g. polyamide or polyester fibres
-
- 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
- D03D15/292—Conjugate, i.e. bi- or multicomponent, fibres or filaments
-
- 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
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- 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
- D10B2201/20—Cellulose-derived artificial fibres
- D10B2201/22—Cellulose-derived artificial fibres made from cellulose solutions
- D10B2201/24—Viscose
-
- 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
-
- 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
- D10B2501/00—Wearing apparel
- D10B2501/04—Outerwear; Protective garments
Definitions
- Embodiments of the present invention are directed to flame resistant fabrics formed of a plurality of spun body yarns and rip stops that extend between at least some of the spun body yarns in at least one of the warp or fill direction of the fabric.
- the rip stops include at least two relatively tough yarns, and the relatively tough yarns include a core and a sheath.
- Protective garments are designed to protect the wearer from hazardous environmental conditions the wearer might encounter. Such garments include those designed to be worn by firefighters and other rescue personnel, industrial and electrical workers, and military personnel.
- the Defender® M Ripstop fabric includes rip stops formed by two body yarns. More specifically, the two body yarns are woven as one in both the warp and fill directions at specified intervals. In this way, the fabric is formed entirely of the same yarns but constructed in a way to impart strength to the fabric.
- the high concentration of rayon fibers in the fabric can detrimentally impact the strength of the fabric. More specifically, rayon fibers weaken when exposed to water and moisture.
- the body yarns serving the rip stop function are less able to impart strength to the fabric after such exposure.
- the flame resistant fabric has a warp direction and a fill direction.
- the flame resistant fabric includes a plurality of spun body yarns each formed of a body yarn fiber blend and provided in both the warp direction and the fill direction of the fabric.
- the fabric can also include a plurality of rip stops extending between at least some of the spun body yarns in at least one of the warp direction or the fill direction of the fabric.
- each rip stop includes at least two relatively tough yarns and each relatively tough yarn includes a core and a sheath.
- the core includes an 100% aramid spun yarn and the sheath includes a sheath fiber blend.
- the flame resistant fabric has a warp direction and a fill direction.
- the flame resistant fabric includes a plurality of spun body yarns each formed of a body yarn fiber blend and provided in both the warp direction and the fill direction of the fabric, where in some embodiments the body yarn fiber blend includes 50-80% FR rayon fibers, 15-40% aramid fibers, and 5-20% nylon fibers.
- the fabric can also include a plurality of rip stops extending between at least some of the spun body yarns in at least one of the warp direction or the fill direction of the fabric.
- each rip stop includes at least two relatively tough yarns formed of a core and a sheath.
- the core includes an 100% aramid spun yarn and the sheath includes a sheath fiber blend including 50-80% FR rayon fibers, 15-40% aramid fibers, and 5-20% nylon fibers.
- five to twenty-five body yarns are interposed between adjacent rip stops in the at least one of the warp direction or the fill direction.
- the flame resistant fabric has a warp direction and a fill direction and includes a plurality of spun body yarns provided in both the warp direction and the fill direction of the fabric.
- the spun body yarns are formed of a body yarn fiber blend that includes 50-80% FR rayon fibers, 15- 40% para-aramid fibers, and 5-20% nylon fibers.
- the fabric can also include a plurality of rip stops extending between at least some of the spun body yarns in both the warp direction and the fill direction of the fabric.
- at least some of the plurality of rip stops are formed of two relatively tough yarns that include a core and a sheath.
- the core includes an 100% para-aramid spun yarn and the sheath includes a sheath fiber blend including 50-80% FR rayon fibers, 15-40% para-aramid fibers, and 5-20% nylon fibers.
- the body yarn fiber blend and the sheath fiber blend are substantially identical, ten to twenty body yarns are interposed between adjacent rip stops in the warp direction and the fill direction of the fabric, and the fabric has a weight between 5-7 ounces per square yard, inclusive.
- Embodiments of the present invention replace the rip stop body yarns with a different yarn that is less apt to degrade or weaken when exposed to water and moisture and thus able to continue to impart the necessary strength after such exposure.
- Embodiments of the fabrics disclosed herein are flame resistant in compliance with GL-PD-07-12, Rev. 9 ( Purchase Description: Cloth, Flame Resistant, 2016, incorporated herein by reference) and MIL-PRF-32635: Cloth, Flame Resistant (2019, incorporated herein by reference), both of which require that the fabric pass a number of different performance tests, including compliance with the thermal protective requirements of having a 4 inch (or less) char length and a 2 second (or less) afterflame when measured pursuant the testing methodology set forth in ASTM D6413 - Standard est Method for Flame Resistance of extiles (Vertical est) (2015 edition, the entirety of which is hereby incorporated by reference).
- the body yarns comprise spun yarns that are constructed of flame resistant material(s).
- the body yarns are formed with inherently FR staple fibers or staple fibers that have been treated to be flame resistant.
- Exemplary FR and non-FR materials useful for forming the body yarns of the invention include, but are not limited to, aramids (including para-aramid and meta-aramid); polybenzimidazole (“PBI”); polybenzoxazole (“PBO”); modacrylic; poly ⁇ 2,6- diimidazo[4,5-b:40;50-e]-pyridinylene-l,4(2,5-dihydroxy)phenylene ⁇ (“PIPD”); ultra- high molecular weight (“UHMW”) polyethylene; UHMW polypropylene; polyvinyl alcohol; polyacrylonitrile; liquid crystal polymer; glass; nylon; carbon; silk; polyamide; polyester; and natural and synthetic cellulosics (e.g., cotton, rayon, acetate, triacetate, and lyocell fibers, as well as their flame resistant counterparts FR cotton, FR rayon, FR acetate, FR triacetate, and FR lyocell), TANLONTM fibers (available from Shanghai Tan
- Examples of para-aramid materials include KEVLARTM (available from DuPont), TECHNORATM (available from Teijin Twaron BV of Arnheim, Netherlands), and TWARON (also available from Teijin Twaron BV).
- Examples of meta-aramid materials include NOMEXTM (available from DuPont), CONEXTM (available from Teijin), and Kermel (available from Kermel).
- An example of a suitable modacrylic material is PROTEXTM available from Kaneka Corporation of Osaka, Japan.
- An example of a PIPD material includes M5 (Dupont).
- Examples of UHMW polyethylene materials include polymer material is VECTRAWM (available from Kuraray).
- the body yarns are a blend of at least rayon, aramid, and nylon fibers, such as 50-80% FR rayon fibers, 15-40% aramid fibers (e.g., para- aramid fibers), and 5-20% nylon fibers.
- the body yarns have the same blend as the body yarns in the Defender® M Ripstop fabric (specifically 65% FR rayon/ 25% para-aramid/ 10% nylon). In other embodiments, the body yarns have a blend of 70% FR rayon, 20% para-aramid, and 10% nylon. Other fibers could be included in the body yarns.
- Each end of the body yarns may be formed of a single body yarn or multiple body yarns may be plied or otherwise combined to form an end.
- relatively tough yarns are provided in discrete rip stop locations within the fabric.
- “toughness” is a property that pertains to a material's (in this case a yarn's) ability to resist breakage.
- the term “relatively tough” is used herein to describe yarns that have higher toughness than the remainder of the yarns (i.e., body yarns) of the fabric.
- the relatively tough yarns can be any type of yarn, including, but not limited to, spun, filament, stretch broken, and corespun yarns. In some embodiments, the relatively tough yarns are devoid of filament yarns. Materials useful in the relatively tough yarns include, but are not limited to, the same fibers identified above for use in the body yarns.
- the relatively tough yarns can include any combination of FR/non-FR materials, as long as the overall fabric is flame resistant and/or satisfies the applicable or desired standards for flame resistant fabrics (e.g., GL-PD-07-12, Rev. 9). Each end of the relatively tough yarns may be formed of a single yarn or multiple yarns may be combined, coupled, or covered (i.e., plied, ply twist, wrapped, coresheath, coverspun, etc.) to form an end.
- the relatively tough yarns include aramid (e.g., para- aramid) content to impart the necessary strength to the fabric.
- the relatively tough yarns include a 100% aramid (e.g., para-aramid) spun yarn. While the 100% aramid spun yarn may alone form the relatively tough yarn, in other embodiments it is plied with another yarn to form a relatively tough yarn. For example, in one embodiment a 100% aramid spun yarn is plied with a body yarn to form a relatively touch yarn.
- the relatively tough yarns are spun yarns having a blend of flame resistant staple fibers, such as those disclosed above. In a more specific embodiment, the relatively tough yarns are spun yarns formed of a blend of aramid and FR rayon fibers (e.g., 50/50 blend).
- the relatively tough yarns are corespun yarns having a core yarn about which a plurality of individual staple fibers are spun to form a fiber sheath that surrounds the core yarn.
- the staple fibers can be spun around the core yarn using a dref spin procedure or air jet spinning process.
- the core yarn and staple fibers can be one or more of the various materials identified above.
- the core yarn is a 100% aramid (e.g., para-aramid) spun yarn.
- the fiber sheath may be formed of the same blend of fibers as the body yarns.
- the fiber sheath is formed of a different fiber blend, such as a blend of FR rayon and nylon (e.g., 90/10 blend).
- the flame resistant fabric described herein may include the body yarns and the relatively tough yarns in any combination or orientation.
- the fabric may be a woven fabric that includes a warp direction and a fill direction.
- the body yarns will typically be provided in both the warp and fill direction.
- the relatively tough yarns may be included in only the warp direction, in only the fill direction, or in both the warp and fill direction so as to form a grid pattern within the fabric.
- Any desirable weave (e.g., plain, twill) or knit (e.g., single, double, plain, interlock) pattern may be used.
- the relatively tough yarns may be located in the fabric relative to the body yarns in any desired ratio.
- the number of relatively tough yarns used in a rip stop as well as the frequency of the rip stops within the fabric may depend on the desired strength properties of the fabric and may be the same or different within and/or between the warp and/ or fill direction of the fabric. Any number of relatively tough yarns greater than one may be used in each rip stop, and the number of relatively tough yarns within each rip stop need not be the same throughout the fabric.
- two relatively tough yarns, three relatively tough yarns, four relatively tough yarns, etc. may be used in a rip stop.
- Rip stops may be provided in either or both the warp and fill directions for every 40 body yarns, 35 body yarns, 30 body yarns, 25 body yams, 20 body yams, 15 body yams, 10 body yams, 5 body yams, 4 body yams, 3 body yams, 2 body yams, and 1 body yam.
- the frequency at which rip stops are provided may be the same or different (1) within a direction of the fabric and/or (2) in different directions of the fabric.
- At least two relatively tough yarns but less than 4 relatively tough yarns form a rip stop and between 5 to 30 body yarns, inclusive; between 5 and 25 body yarns, inclusive; between 5 and 20 body yarns, inclusive; between 5 and 15 body yarns, inclusive; between 5 and 10 body yarns, inclusive; between 10 and 30 body yarns, inclusive; between 10 and 25 body yarns, inclusive; between 10 and 20 body yarns, inclusive; and between 10 and 15 body yarns, inclusive are provided between adjacent rip stops in one or both directions of the fabric.
- the fabrics disclosed herein have a weight between
- the fabric weight is 6-7 osy, inclusive, and/ or is less than or equal to 7 osy and/ or less than or equal to 6.5 osy.
- Inventive Fabric 1 A 6.5 osy woven fabric formed with (1) spun body yarns having a fiber blend of 70% FR rayon/20% para-aramid/10% nylon and (2) relatively tough yarns that were corespun yarns having a single 30 cotton count (English) 100% para-aramid spun core yarn and a fiber sheath of 70% FR rayon/20% para-aramid/10% nylon.
- the body yarns and relatively tough yarns were provided in both the warp and fill directions in a body yarn to relatively tough yarn ratio of 19:2 in the warp and 10:2 in the fill, meaning that a rip stop of two relatively tough yarns followed nineteen body yarns in a repeating pattern across the warp direction and a rip stop of two relatively tough yarns followed ten body yarns in a repeating pattern across the fill direction.
- the warp and fill densities were 69 ends/inch and 59 picks/inch, respectively.
- Inventive Fabric 2 A 6.5 osy woven fabric formed with (1) spun body yarns having a fiber blend of 70% FR rayon/20% para-aramid/10% nylon and (2) relatively tough yarns that were corespun yarns having a single 30 cotton count (English) 100% para-aramid spun core yarn and a fiber sheath of 90% FR rayon/10% nylon.
- the body yarns and relatively tough yarns were provided in both the warp and fill directions in a body yarn to relatively tough yarn ratio of 19:2 in the warp and 10:2 in the fill (as described above with respect to Inventive Fabric 1).
- the warp and fill densities were 69 ends/inch and 59 picks/ inch, respectively.
- Inventive Fabric 3 A 6.5 osy woven fabric formed with (1) spun body yarns having a fiber blend of 65% FR rayon/25% para-aramid/ 10% nylon and (2) relatively tough yarns that were corespun yarns having a single 30 cotton count (English) 100% para-aramid spun core yarn and a fiber sheath of 65% FR rayon/25% para-aramid/ 10% nylon. Only body yarns were provided in the warp direction. Both body yarns and relatively tough yarns were provided in the fill direction in a body yarn to relatively tough yarn ratio of 10:2 in the fill direction, meaning that a rip stop of two relatively tough yarns followed ten body yarns in a repeating pattern across the fill direction. The warp and fill densities were 69 ends/inch and 59 picks/ inch, respectively.
- tensile and tear strengths of Inventive Fabrics 1-3 were tested in compliance with GF-PD-07-12, Rev. 9 and compared against the Defender® M Ripstop fabric described above.
- Tensile strength is the force required to break a fabric under a load, and is measured in accordance with ASTM D5034 - 09: Standard Test Method for Breaking Strength and Elongation of Textile Fabrics (Grab Test) (2013 edition, incorporated herein by this reference). According to this method, a specimen is mounted centrally in clamps of a tensile machine and a force is applied until the specimen breaks.
- Tear strength is a measure of the amount of force required to propagate in a fabric a tear after its initiation. The tear strength of fabrics is measured pursuant to ASTM D1424 - 09 ( Standard Test Method for Tearing Strength of Fabrics by Falling- Pendulum (Elmendorf-Type) Apparatus (2013 edition), incorporated by reference), and the results are reported in pounds force (lbf).
- a slit of a specified size is cut into a fabric sample of a specified size.
- a clamp positioned on the fabric sample on each side of the slit to support the fabric sample.
- a weighted pendulum is released and swings down to apply a force to the fabric sample. The amount of force required to propagate the existing tear in the fabric is measured and that amount of force represents the tear strength of the fabric.
- Example 1 A flame resistant fabric having a warp direction and a fill direction, the fabric comprising a plurality of spun body yarns each formed of a body yarn fiber blend and provided in both the warp direction and the fill direction of the fabric, and a plurality of rip stops extending between at least some of the spun body yarns in at least one of the warp direction or the fill direction of the fabric, wherein each rip stop comprises at least two relatively tough yarns and wherein each relatively tough yarn comprises a core and a sheath, wherein the core comprises an 100% aramid spun yarn and the sheath comprises a sheath fiber blend.
- Example 2 The flame resistant fabric of any of the preceding or subsequent examples or combination of examples, wherein the core comprises an 100% para-aramid spun yarn.
- Example 3 The flame resistant fabric of any of the preceding or subsequent examples or combination of examples, wherein the sheath fiber blend comprises FR rayon fibers, aramid fibers, and nylon fibers.
- Example 4 The flame resistant fabric of any of the preceding or subsequent examples or combination of examples, wherein the sheath fiber blend comprises 50-80% FR rayon fibers, 15-40% aramid fibers, and 5-20% nylon fibers.
- Example 5 The flame resistant fabric of any of the preceding or subsequent examples or combination of examples, wherein the aramid fibers are para- aramid fibers.
- Example 6 The flame resistant fabric of any of the preceding or subsequent examples or combination of examples, wherein the body yarn fiber blend and the sheath fiber blend are identical.
- Example 7 The flame resistant fabric of any of the preceding or subsequent examples or combination of examples, wherein the body yarn fiber blend and the sheath fiber blend each comprises 50-80% FR rayon fibers, 15-40% aramid fibers, and 5-20% nylon fibers.
- Example 8 The flame resistant fabric of any of the preceding or subsequent examples or combination of examples, wherein the body yarn fiber blend and the sheath fiber blend are identical.
- Example 9 The flame resistant fabric of any of the preceding or subsequent examples or combination of examples, wherein five to twenty-five spun body yarns are interposed between adjacent rip stops in the at least one of the warp direction or the fill direction.
- Example 10 The flame resistant fabric of any of the preceding or subsequent examples or combination of examples, wherein ten to twenty body yarns are interposed between adjacent rip stops in the at least one of the warp direction or the fill direction.
- Example 11 The flame resistant fabric of any of the preceding or subsequent examples or combination of examples, wherein the plurality of rip stops extend between at least some of the spun body yarns in both the warp direction and the fill direction of the fabric.
- Example 12 The flame resistant fabric of any of the preceding or subsequent examples or combination of examples, wherein the fabric comprises a weight between 5-7 ounces per square yard, inclusive.
- Example 13 The flame resistant fabric of any of the preceding or subsequent examples or combination of examples, wherein the flame resistant fabric is devoid of filament yarns.
- Example 14 A flame resistant fabric having a warp direction and a fill direction, the fabric comprising a plurality of spun body yarns each formed of a body yarn fiber blend and provided in both the warp direction and the fill direction of the fabric, wherein the body yarn fiber blend comprises 50-80% FR rayon fibers, 15-40% aramid fibers, and 5-20% nylon fibers, and a plurality of rip stops extending between at least some of the spun body yarns in at least one of the warp direction or the fill direction of the fabric, wherein each rip stop comprises at least two relatively tough yarns and wherein each relatively tough yarn comprises a core and a sheath, wherein the core comprises an 100% aramid spun yarn and the sheath comprises a sheath fiber blend comprising 50-80% FR rayon fibers, 15-40% aramid fibers, and 5-20% nylon fibers,
- Example 15 The flame resistant fabric of any of the preceding or subsequent examples or combination of examples, wherein the core comprises an 100% para-aramid spun yarn.
- Example 16 The flame resistant fabric of any of the preceding or subsequent examples or combination of examples, wherein the 15-40% aramid fibers in the body yarn fiber blend and the sheath fiber blend comprise 15-40% para-aramid fibers.
- Example 17 The flame resistant fabric of any of the preceding or subsequent examples or combination of examples, wherein the body yarn fiber blend and the sheath fiber blend are identical.
- Example 18 The flame resistant fabric of any of the preceding or subsequent examples or combination of examples, wherein the plurality of rip stops extend between at least some of the spun body yarns in both the warp direction and the fill direction of the fabric.
- Example 19 The flame resistant fabric of any of the preceding or subsequent examples or combination of examples, wherein the fabric comprises a weight between 5-7 ounces per square yard, inclusive.
- Example 20 A flame resistant fabric having a warp direction and a fill direction, the fabric comprising a plurality of spun body yarns each formed of a body yarn fiber blend and provided in both the warp direction and the fill direction of the fabric, wherein the body yarn fiber blend comprises 50-80% FR rayon fibers, 15-40% para-aramid fibers, and 5-20% nylon fibers, and a plurality of rip stops extending between at least some of the spun body yarns in both the warp direction and the fill direction of the fabric, wherein at least some of the plurality of rip stops consist of two relatively tough yarns and wherein each relatively tough yarn comprises a core and a sheath, wherein the core comprises an 100% para-aramid spun yarn and the sheath comprises a sheath fiber blend comprising 50-80% FR rayon fibers, 15-40% para- aramid fibers, and 5-20% nylon fibers, wherein the body yarn fiber blend and the sheath fiber blend are substantially identical, wherein ten to twenty body yarns are interposed
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Woven Fabrics (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Glass Compositions (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US201962950193P | 2019-12-19 | 2019-12-19 | |
PCT/US2020/066038 WO2021127454A1 (en) | 2019-12-19 | 2020-12-18 | Flame resistant fabrics with increased strength |
Publications (1)
Publication Number | Publication Date |
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EP4077781A1 true EP4077781A1 (en) | 2022-10-26 |
Family
ID=74206157
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20845465.2A Pending EP4077781A1 (en) | 2019-12-19 | 2020-12-18 | Flame resistant fabrics with increased strength |
Country Status (11)
Country | Link |
---|---|
US (1) | US20210189611A1 (zh) |
EP (1) | EP4077781A1 (zh) |
JP (1) | JP2023507374A (zh) |
CN (1) | CN115244235A (zh) |
AU (1) | AU2020407643A1 (zh) |
CA (1) | CA3161838A1 (zh) |
CO (1) | CO2022008423A2 (zh) |
IL (1) | IL293987A (zh) |
MX (1) | MX2022007480A (zh) |
WO (1) | WO2021127454A1 (zh) |
ZA (1) | ZA202206594B (zh) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4958485A (en) * | 1988-12-22 | 1990-09-25 | Springs Industries, Inc. | Corespun yarn for fire resistant safety apparel |
JP3847532B2 (ja) | 2000-07-05 | 2006-11-22 | 株式会社日立製作所 | 液晶モジュールおよびこの液晶モジュールを搭載した液晶モニター |
US20030228821A1 (en) * | 2002-06-06 | 2003-12-11 | Reiyao Zhu | Fire-retardant fabric with improved tear, cut, and abrasion resistance |
US7393800B2 (en) * | 2002-06-07 | 2008-07-01 | Southern Mills, Inc. | Flame resistant fabrics having increased strength and abrasion resistance |
US7589036B2 (en) * | 2002-06-07 | 2009-09-15 | Southern Mills, Inc. | Flame resistant fabrics having increased strength |
JP4465438B2 (ja) * | 2007-07-25 | 2010-05-19 | 日本毛織株式会社 | 多層構造紡績糸、その製造方法、これを用いた耐熱性布帛及び耐熱性防護服 |
WO2015041734A1 (en) * | 2013-09-23 | 2015-03-26 | Milliken & Company | Enhanced char integrity fabric |
JP5972420B1 (ja) * | 2015-03-18 | 2016-08-17 | 日本毛織株式会社 | 多層構造紡績糸とこれを使用した耐熱性布帛及び耐熱性防護服 |
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2020
- 2020-12-18 US US17/127,299 patent/US20210189611A1/en active Pending
- 2020-12-18 WO PCT/US2020/066038 patent/WO2021127454A1/en unknown
- 2020-12-18 CN CN202080097124.XA patent/CN115244235A/zh active Pending
- 2020-12-18 EP EP20845465.2A patent/EP4077781A1/en active Pending
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US20210189611A1 (en) | 2021-06-24 |
CA3161838A1 (en) | 2021-06-24 |
AU2020407643A1 (en) | 2022-06-23 |
WO2021127454A1 (en) | 2021-06-24 |
JP2023507374A (ja) | 2023-02-22 |
CO2022008423A2 (es) | 2022-07-08 |
IL293987A (en) | 2022-08-01 |
ZA202206594B (en) | 2023-06-28 |
CN115244235A (zh) | 2022-10-25 |
MX2022007480A (es) | 2022-06-29 |
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