WO2012053460A1 - 積層耐熱防護衣 - Google Patents

積層耐熱防護衣 Download PDF

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Publication number
WO2012053460A1
WO2012053460A1 PCT/JP2011/073775 JP2011073775W WO2012053460A1 WO 2012053460 A1 WO2012053460 A1 WO 2012053460A1 JP 2011073775 W JP2011073775 W JP 2011073775W WO 2012053460 A1 WO2012053460 A1 WO 2012053460A1
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Prior art keywords
heat
resistant protective
protective clothing
laminated heat
fabric
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PCT/JP2011/073775
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English (en)
French (fr)
Inventor
黒田　幸乙綾
内川　哲茂
Original Assignee
帝人テクノプロダクツ株式会社
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Application filed by 帝人テクノプロダクツ株式会社 filed Critical 帝人テクノプロダクツ株式会社
Priority to KR1020137005572A priority Critical patent/KR20130143556A/ko
Priority to JP2012539707A priority patent/JP6037837B2/ja
Priority to CN201180050707.8A priority patent/CN103153101B/zh
Priority to EP11834299.7A priority patent/EP2630880B1/en
Priority to CA2814640A priority patent/CA2814640C/en
Priority to ES11834299.7T priority patent/ES2629055T3/es
Priority to US13/824,163 priority patent/US9415246B2/en
Priority to IN2544DEN2013 priority patent/IN2013DN02544A/en
Publication of WO2012053460A1 publication Critical patent/WO2012053460A1/ja

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    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B17/00—Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D31/00—Materials specially adapted for outerwear
    • A41D31/04—Materials specially adapted for outerwear characterised by special function or use
    • A41D31/08—Heat resistant; Fire retardant
    • A41D31/085—Heat resistant; Fire retardant using layered materials
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B17/00—Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes
    • A62B17/003—Fire-resistant or fire-fighters' clothes
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D1/00—Woven fabrics designed to make specified articles
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D1/00—Woven fabrics designed to make specified articles
    • D03D1/0035—Protective fabrics
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D1/00—Woven fabrics designed to make specified articles
    • D03D1/0035—Protective fabrics
    • D03D1/0041—Cut or abrasion resistant
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D11/00—Double or multi-ply fabrics not otherwise provided for
    • D03D11/02—Fabrics formed with pockets, tubes, loops, folds, tucks or flaps
    • 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
    • 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
    • D03D13/008—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 characterised by weave density or surface weight
    • 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
    • D03D15/47—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 multicomponent, e.g. blended yarns or threads
    • 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
    • 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
    • D03D15/567—Shapes or effects upon shrinkage
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M17/00—Producing multi-layer textile fabrics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2437/00—Clothing
    • 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
    • D10B2101/10—Inorganic fibres based on non-oxides other than metals
    • D10B2101/12—Carbon; Pitch
    • 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
    • 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
    • D10B2211/00—Protein-based fibres, e.g. animal fibres
    • D10B2211/01—Natural animal fibres, e.g. keratin fibres
    • D10B2211/02—Wool
    • 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
    • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
    • 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
    • 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
    • D10B2331/30—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polycondensation products not covered by indexing codes D10B2331/02 - D10B2331/14
    • D10B2331/301—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polycondensation products not covered by indexing codes D10B2331/02 - D10B2331/14 polyarylene sulfides, e.g. polyphenylenesulfide
    • 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

  • the present invention relates to a laminated heat-resistant protective garment, and more specifically, not only is excellent in chemical resistance and moisture permeability and waterproofness, but also has a heat-resistant, lightweight and flexible laminated structure having a flexible laminated structure. It is about clothes.
  • Incombustible asbestos fiber, glass fiber, etc. have been used in the past as fibers that make up heat-resistant protective clothing worn by firefighters during firefighting work, but in recent years due to environmental issues and ease of movement, Heat-resistant and flame-retardant organic fibers such as aramid fibers, polyphenylene sulfide fibers, polyimide fibers, polybenzimidazole fibers, and polybenzoxazole fibers are mainly used. Furthermore, for the purpose of preventing radiant heat to the fabric, many surface treated layers of metal aluminum or the like by coating, vapor deposition, sputtering, plating or the like are used as the surface layer. By these methods, the heat shielding property against radiant heat was considerably improved.
  • the IS011613 approach A has a flame exposure test (IS09151) and a radiation exposure test (IS06942-2002) with specifications of 13 seconds or more and 18 seconds or more, respectively. It is prescribed.
  • a flame exposure test IS09151
  • a radiation exposure test IS06942-2002
  • weight reduction is a means for reducing heat stress and has become a problem in recent years.
  • JP 2006-16709 discloses a protective clothing having a two-layer structure
  • JP 2009-280942 discloses a surface layer made of different shrinkage spun yarn, etc. The required performance was not sufficient, or the weight was not reduced sufficiently, and it was not sufficient as heat-resistant protective clothing.
  • the object of the present invention is to solve the above-mentioned problems of the prior art, not only excellent in heat resistance chemical resistance and moisture permeability and waterproofness, but also lightweight and flame exposure test of IS011613 approaches A and B (IS09151), radiation exposure test (IS06942-2002) It is to provide a laminated heat-resistant protective clothing that satisfies the specifications such as (IS06942-2002) and has a light weight and high heat shielding property.
  • a laminated heat-resistant protective garment comprising a surface layer, a moisture-permeable waterproof layer and / or a heat-insulating layer, and the thickness of the laminated heat-resistant protective garment after washing 5 times in accordance with IS06330 is 2.5 mm or more.
  • IS011613 Heat resistance (radiation exposure) test (IS06942-2002) in European approach A (Section 4) of the heat resistance (layered heat protection) characterized in that the time required for the temperature rise to 24 ° C (RHTI24) is 18 seconds or more Clothing is provided.
  • the laminated heat-resistant protective clothing of the present invention not only excels in heat resistance chemical resistance and moisture permeability, but also clears specifications such as IS011613 approach A and B flame exposure test (IS09151), radiation exposure test (IS06942-2002), etc.
  • it since it is lightweight and has high heat shielding properties, it can be a laminated heat-resistant protective garment with less heat stress.
  • the organization chart which shows the other example of the textile fabric which comprises the heat insulation layer of the laminated heat-resistant protective clothing of this invention The organization chart which shows the other example of the textile fabric which comprises the heat insulation layer of the laminated heat-resistant protective clothing of this invention.
  • the organization chart which shows the other example of the textile fabric which comprises the heat insulation layer of the laminated heat-resistant protective clothing of this invention The organization chart which shows the other example of the textile fabric which comprises the heat insulation layer of the laminated heat-resistant protective clothing of this invention.
  • the organization chart which shows the other example of the textile fabric which comprises the heat insulation layer of the laminated heat-resistant protective clothing of this invention The organization chart which shows the other example of the textile fabric which comprises the heat insulation layer of the laminated heat-resistant protective clothing of this invention.
  • the organization chart which shows the other example of the textile fabric which comprises the heat insulation layer of the laminated heat-resistant protective clothing of this invention.
  • the schematic diagram of the cross section which shows the shape change before and behind the flame exposure of the lamination
  • the laminated heat-resistant protective clothing of the present invention is composed of a surface layer, an intermediate layer having a moisture-permeable waterproof function, and / or a heat-insulating layer, and both the surface layer, the intermediate layer, and the heat-insulating layer are para-aramid fibers and meta-aramids.
  • the fiber is used alone or as a mixed cotton, mixed fiber, or used as a knit knitted fabric, but as other mixed cotton and mixed fiber, polyphenylene sulfide fiber, polyimide fiber, polybenzimidazole fiber, polybenzoxazole fiber, polyamideimide fiber, Polyetherimide fiber, polyetherimide fiber, flame retardant acrylic fiber, polyclar fiber, flame retardant polyester fiber, flame retardant cotton fiber, flame retardant rayon fiber, flame retardant vinylon fiber, flame retardant wool fiber, pyromex, carbon fiber, etc. Can be mentioned. However, as long as the flame retardancy as a fabric can be satisfied, blending / mixing of flammable fibers or union knitting may be performed.
  • the para-aramid fiber is preferably a fiber made of polyamide having an aromatic ring in the main chain, and poly-p-phenylene terephthalamide (PPTA) is a copolymer type copolyparaphenylene-3,4'oxydiphenylene. It may be terephthalamide (PPODPA).
  • PPTA poly-p-phenylene terephthalamide
  • PPODPA terephthalamide
  • the present invention is not limited to these, and examples of the form of the fabric include a knitted fabric and a non-woven fabric. Practically, the fabric is preferable.
  • fibers such as meta-aramid fibers and para-aramid fibers can be used in any form such as long fibers, blended yarns, spun yarns made of short fibers, etc.
  • the content of para-aramid fibers is preferably 1 to 70% by weight.
  • the surface layer may be either a single woven fabric or a double woven fabric.
  • a double woven fabric is excellent in the flame resistance and radiation exposure characteristics under the same basis weight, and the double woven fabric is particularly preferable in order to satisfy light weight and high heat shielding properties. That is, in order to suppress the temperature rise of the part corresponding to the skin side when worn, it is considered effective to increase the thickness difference of the surface layer before and after the flame exposure.
  • the thickness can be easily changed by forming front and back tissues using fibers having different shrinkage ratios and changing the binding interval between the front and back sides.
  • FIG. 1 shows a layered heat-resistant protective garment having the same configuration as that of Example 1 described later, and was exposed to a flame for 8 seconds in the (radiation + flame exposure) test (IS017492) in North American approach B (section 5) described in IS011613.
  • the relationship between the temperature rise ( ⁇ T) of the part corresponding to the skin side after 40 seconds and the binding interval between the front and back surfaces of the surface layer is shown, and the optimum binding to suppress the temperature rise It can be seen that there is an interval value.
  • FIG. 2 shows the relationship between the change in the thickness of the surface layer and the binding interval between the front and back surfaces of the surface layer after 40 seconds have passed after the flame exposure for 8 seconds under the same conditions as described above.
  • the binding interval is small, even if the thickness change occurs due to the shrinkage difference between the front and back fabrics, the increase is limited, and the sufficient temperature rise suppressing effect is not exhibited.
  • the binding interval is too large, the thickness increases, but there is a possibility that an effective form for suppressing the temperature rise may not be maintained, and as with the binding interval, the optimum thickness for suppressing the temperature increase. It can be seen that the value of exists.
  • the preferable change in the thickness of the surface layer is 2 mm or more (under a load of 3 g / cm 2 ), and the preferable binding interval is 15 to 45 mm, more preferably 15 to 30 mm.
  • the outer layer is made of a double woven fabric, and the TMA shrinkage difference at 400 ° C. (temperature increase of 150 ° C./min) between the front side fabric and the back side fabric of the fabric is 4% or more, and ISO17492 (TPP) from the front side fabric side. It is particularly preferable to use a surface layer in which the change in thickness of the double woven fabric is 2 mm or more when exposed to a flame for 8 seconds.
  • the surface layer double woven fabric has higher cut resistance of the back side fabric than the front side fabric.
  • the surface layer is preferably treated with water repellent soot to provide protective clothing having higher water resistance and chemical resistance, and the processing methods are coating method, dipping method, spray method, in bath Any of the dipping methods may be used.
  • the intermediate layer by using the above-mentioned woven or knitted fabric, etc., which is further provided with a moisture permeable waterproof layer film such as polytetrafluoroethylene by lamination or coating, an excellent moisture permeable waterproof function and chemical resistance are also obtained. Can be granted.
  • the intermediate layer and / or the heat shielding layer having a moisture permeable waterproof function may be separated or integrated.
  • the separated three-layer laminated structure has a larger number of interlayer air layers (heat insulating layers) and is more advantageous for heat shielding properties. However, if the laminated thickness is the same, it is considered that there is no significant difference in heat shielding properties.
  • the thickness of the heat shield layer is preferably 1.80 mm or more, and the basis weight is preferably 110 to 150 g / m 2 .
  • the above heat-shielding layer is shrunk by mixing 2 to 20% or less of highly shrinkable fibers and bringing the heat-shielding layer structure into contact with a wet and dry heat condition of 80 ° C. or higher, thereby increasing the thickness (bulky). It is preferable to obtain a thermal layer.
  • a bulky heat-shielding layer for example, when used in warp for textile manufacturing (design arrangement), when it comes into contact with wet and dry heat conditions of 80 ° C. or higher, shrinkage occurs in the warp direction, resulting in a markedly bulky light-shielding layer.
  • a thermal layer is obtained, and a knitted fabric such as a heat insulating cushioning material (air packing) can be obtained by alternately arranging highly shrinkable fibers and fibers that are not.
  • FIGS. FIG. 5 shows an example of the alternating arrangement, but the thickness and durability of the thickness can be arbitrarily changed by changing the density and the alternating pitch.
  • the thermal barrier layer thus obtained when used as a laminated heat-resistant protective garment, may be on either the flame side (or wear (human body) side), but wear the fire-resistant clothing of the laminated heat-resistant protective garment. Assuming that it is important not to get caught by a toe or a rough fingertip, in that case, it is preferable that the side with relatively little unevenness is worn (human body) side, but high heat shielding is prioritized.
  • the present invention is not limited to this, and unevenness (random, alternating, or one side surface) such as the heat insulating cushioning material (air packing) may appear on either the front or back side.
  • the laminated heat-resistant protective clothing of the present invention changes in cross-sectional shape as shown in FIG. 6 before and after exposure to flame, and exhibits the following excellent heat resistance. That is, the heat-resistant protective clothing of the present invention has a thickness of 2.5 mm or more after washing 5 times according to IS06330, and heat transfer (radiation exposure) in European approach A (section 4) described in IS011613. ) In the test (IS06942-2002), it is necessary that the time (RHTI24) required to increase the temperature by 24 ° C. is 18 seconds or more.
  • the time (TPP) required to increase the temperature by 24 ° C. is 17.5 seconds or more. More preferably.
  • the thus obtained laminated heat-resistant protective clothing of the present invention preferably has a basis weight of 400 to 600 g / m 2 , more preferably 450 ⁇ 50 g / m 2 .
  • the laminated heat-resistant protective clothing of the present invention preferably has a 2 ° + 3 ° burn rate of 10% or less in IS013506.
  • IS06942-2002 RHTI24 (seconds) Based on IS06942 (2002), at a heat flux of 40 kW / m 2 , the time from the start of radiation exposure until the copper sensor rose by 24 ° C. (RHTI24) was determined.
  • IS09151 HTI24 (seconds) Based on IS09151, the time (HTI24) for the copper sensor to rise by 24 ° C from the start of flame exposure was determined.
  • IS017492 TPPtime (seconds) Based on IS017492, the time (TPPtime (second)) when the test was raised by 24 ° C.
  • the outer layer is a two-layer structure woven fabric, and on the front side of the two-layer structure, polymetaphenylene isophthalamide fiber (manufactured by Teijin Techno Products, Teijin conex, original yarn brand c / # NB32.2T51), Uses spun yarn (Mixed cotton ratio Meta 90: Para 10, Paragraph 40/1) made of coparaphenylene and 3,4 ⁇ oxydiphenylene terephthalamide fiber (manufactured by Teijin Techno Products Co., Ltd., Technora, brand T330BK1.7T51) did.
  • the back side uses spun yarn made of coparaphenylene and 3,4'oxydiphenylene terephthalamide fiber (manufactured by Teijin Techno Products Co., Ltd., Technora, brand name T330BK1.7T51).
  • Isophthalamide fiber Teijin Techno Products Co., Ltd., Teijin conex, original yarn brand c / # NB32.2T51
  • coparaphenylene 3,4 ⁇ oxydiphenylene terephthalamide fiber manufactured by Teijin Techno Products Co., Ltd.
  • Technora brand T330BK1.7T51
  • the obtained raw machine was subjected to hair roasting, desizing scouring, and water-repellent cocoon oil processing in a normal process.
  • the obtained fabric had a basis weight of 215 g / cm 2 and a thickness of O.80 mm (conforms to JISL1018).
  • the intermediate layer consists of polymetaphenylene isophthalamide fiber (manufactured by Teijin Techno Products Co., Ltd., Teijin conex, original yarn brand c / # NB32.2T51), coparaphenylene and 3,4'oxydiphenylene terephthalamide fiber ( Polytetrafluoroethylene after weaving and finishing by conventional methods using spun yarn (mixed cotton ratio Meta 95: Para 5, Para.
  • the thermal barrier layer is made of polymetaphenylene isophthalamide fiber (Teijin Techno Products Co., Ltd., Teijin conex, original yarn brand c / # NB32.2T51), coparaphenylene, 3,4 'oxydiphenylene terephthalamide fiber (Teijin Techno Products Co., Ltd., Technora, brand T330BK1.7T51) spun yarn (Mixed cotton ratio Meta 95: Para 5, Para.
  • Example 2 Example 1 except that in Example 1, a spinalized filament (manufactured by Teijin Techno Products Co., Ltd., Technora, brand GTN220T) of coparaphenylene-3,4'-oxydiphenylene terephthalamide fiber was used on the back side of the outer layer. 1 was carried out.
  • Example 3 In Example 2, the same procedure as in Example 2 was performed, except that the weaving density of the surface layer was changed to warp ⁇ weft density of 96 ⁇ 94 / inch.
  • Example 4 In Example 1, it carried out similarly to Example 1 except having made the surface side spun yarn count of the surface layer into 36/1.
  • Example 5 In Example 1, it implemented similarly to Example 1 except having made the structure of the heat-shielding layer into the design of FIG.
  • Example 6 In Example 1, it implemented similarly to Example 1 except having made two heat-shielding layers into 1 layer bonding.
  • Example 7 In Example 1, it implemented like Example 1 except the lattice spacing of the front and back binding of a surface layer being 30 mm.
  • Example 1 In Example 1, the same procedure as in Example 1 was performed except that the thickness of the heat shield layer was 1.27 mm and the thickness of the three layers was 2.4 mm.

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Abstract

　本発明によれば、耐熱薬品性および透湿防水性に優れるだけでなく、IS011613のアプローチＡ及びＢの火炎暴露試験(IS09151)、放射暴露試験(IS06942-2002)などのスペックをクリアし、軽量で高遮熱性を有する、ヒートストレスの少ない積層耐熱防護衣が提供される。

Description

積層耐熱防護衣
本発明は、積層耐熱防護衣に関するものであり、さらに詳しくは、耐薬品性及び透湿防水性に優れるだけでなく、高遮熱性と軽量性、また柔軟性を有する積層構造を有する耐熟防護衣に関するものである。
消防士が消火作業中に着用する耐熱防護服を構成する繊維として、従来は不燃性のアスベスト繊維、ガラス繊維等が使われていたが、環境問題や動き易さなどの点から、近年では、アラミド繊維、ポリフェニレンスルフィド繊維、ポリイミド繊維、ポリベンズイミダゾール繊維、ポリベンズオキサゾール繊維などの耐熱難燃性の有機繊維が主として用いられている。
更には、布帛への輻射熱を防止する目的から、金属アルミニウム等をコーティングあるいは蒸着、スパッタリング、メッキなどにより、表面加工したものが多く表地層として使用されている。これらの方法によりかなり輻射熱に対する遮熱性は向上した。
特に近年は、この輻射熱の防止も非常に重要なスペックとなり、IS011613のアプローチＡには、火炎暴露試験(IS09151)、放射暴露試験(IS06942-2002)のスペックがそれぞれ13秒以上と18秒以上と規定されている。
また耐熱性だけでなく、夏場の作業でのヒートストレスによる熱射病を予防するため、近年では、内層にアイスパックを使用したり、縫製により通気性を確保したりという手段が用いられている。中でも、軽量化はヒートストレスを軽減する一手段であり近年の課題になっている。
このような耐熱防護服として、特開2006-16709号公報には二層構造を有する防護服、特開2009-280942号公報には異収縮紡績糸からなる表地層などが挙げられているが、必要性能が充分でなかったり、十分な軽量化には至っておらず、耐熱防護衣として十分ではなかった。
特開2006-16709号公報 特開2009-280942号公報
本発明の目的は、上記従来技術の有する問題点を解決し、耐熱薬品性および透湿防水性に優れるだけでなく、軽量かつIS011613のアプローチＡ及びＢの火炎暴露試験(IS09151)、放射暴露試験(IS06942-2002)などのスペックをクリアする、軽量で高遮熱性を有する積層耐熱防護衣を提供することにある。
本発明者らは上記課題を鋭意検討の結果、以下に記載の積層耐熱防護衣とすることにより、前記問題を解決し本発明に至った。
すなわち本発明によれば、
表地層、透湿防水機能を有する中間層及び／又は遮熱層からなる積層耐熱防護衣であり、IS06330に準拠した洗濯５回後の該積層耐熱防護衣の厚みが2.5mm以上で、IS011613記載の欧州アプローチＡ（第４節）における熱伝達（放射暴露）試験(IS06942-2002)において、24℃温度上昇するまでに要する時間(RHTI24)が18秒以上であることを特徴とする積層耐熱防護衣
が提供される。
本発明の積層耐熱防護衣は、耐熱薬品性および透湿防水性に優れるだけでなく、IS011613のアプローチＡ及びＢの火炎暴露試験(IS09151)、放射暴露試験(IS06942-2002)などのスペックをクリアし、軽量で高遮熱性を有するので、ヒートストレスの少ない積層耐熱防護衣とすることができる。
本発明の積層耐熱防護衣の表地層を構成する二重織物の格子間隔と温度上昇との関係を示すグラフ。 本発明の積層耐熱防護衣の表地層を構成する二重織物の格子間隔と厚み変化との関係を示すグラフ。 本発明の積層耐熱防護衣の遮熱層を構成する織物の一例を示す組織図。 本発明の積層耐熱防護衣の遮熱層を構成する織物の他の例を示す組織図。 本発明の積層耐熱防護衣の遮熱層を構成する織物の他の例を示す組織図。 本発明の積層耐熱防護衣の遮熱層を構成する織物の他の例を示す組織図。 本発明の積層耐熱防護衣の遮熱層を構成する織物の他の例を示す組織図。 本発明の積層耐熱防護衣の遮熱層を構成する織物の他の例を示す組織図。 本発明の積層耐熱防護衣の遮熱層を構成する織物の他の例を示す組織図。 本発明の積層耐熱防護衣の遮熱層を構成する織物の他の例を示す組織図。 本発明の積層耐熱防護衣の遮熱層を構成する織物の他の例を示す組織図。 本発明の積層耐熱防護衣の遮熱層を構成する織物の他の例を示す組織図。 本発明の積層耐熱防護衣の火炎暴露前後の形状変化を示す断面の模式図。
　以下、本発明の実施の形態について詳細に説明する。
本発明の積層耐熱防護衣は、表地層、透湿防水機能を有する中間層及び／又は遮熱層から構成されており、表地層、中間層、遮熱層ともにパラ系アラミド繊維、メタ系アラミド繊維を単独、もしくは混綿、混繊したり、交織編物として用いるが、他に混綿、混繊可能な繊維として、ポリフェニレンスルフィド繊維、ポリイミド繊維、ポリベンズイミダゾール繊維、ポリベンズオキサゾール繊維、ポリアミドイミド繊維、ポリエーテルイミド繊維、ポリエーテルイミド繊維、難燃アクリル繊維に、ポリクラール繊維、難燃ポリエステル繊維、難燃綿繊維、難燃レーヨン繊維、難燃ビニロン繊維、難燃ウール繊維、パイロメックス、炭素繊維などが挙げられる。但し、布帛としての難燃性が満足できるのであれば、易燃焼性繊維の混綿・混繊、交織編であっても一向に構わない。
　またパラ系アラミド繊維は、主鎖中に芳香族環を有するポリアミドからなる繊維が好ましく、ポリ－p－フェニレンテレフタルアミド(PPTA)でも、共重合タイプのコポリパラフェニレン－3,4`オキシジフェニレンテレフタルアミド(PPODPA)であっても構わない。
特に表地層としては、耐熱、難燃、耐切創、高強力、高引張り強力などの特性が必要とされ、メタ系アラミド繊維とパラ系アラミド繊維および一部制電繊維などが用いられてなるが、これらに限られるものではなく、また布帛の形態としては、製編織物および不織布などが挙げられ、実用的には製織物が好ましい。
またメタ系アラミド繊維とパラ系アラミド繊維などの繊維は、長繊維、混繊糸、短繊維よりなる紡績糸などの何れの形態でも使用できるが、火炎暴露時の製編織物の穴あき抑制、実用的な製編織物性を両立するには、パラ系アラミド繊維の含有量が1～70重量%であることが好ましく推奨される。
該表地層は、一重織物、二重織物の何れであっても構わない。同一目付下で耐火炎暴露、耐放射暴露特性が優れているのは二重織物であり、軽量で高遮熱性を満足するためには二重織物が特に好ましい。
即ち、着用した場合に皮膚側に相当する部分の温度上昇を抑制するためには、火炎暴露前後の表地層の厚み差を大きくすることが効果的であると考えられるが、二重織物の場合、例えば、互いに収縮率の異なる繊維を用いて表裏の組織を形成させ、表裏の結束間隔などを変化させることにより、容易に厚みを変化させることができるからである。
　例えば、図１は、後述の実施例１と同じ構成の積層耐熱防護衣において、IS011613記載の北米アプローチＢ（第５節）における（放射＋火炎暴露）試験(IS017492)において、８秒間火炎暴露した後、40秒経過した後の、皮膚側に相当する部分の温度上昇（ΔT）と、表地層の表裏の結束間隔との関係を示したものであり、温度上昇を抑制するのに最適な結束間隔の値が存在することがわかる。
　尚、図２は、上記と同じ条件で、８秒間火炎暴露した後、40秒経過した後の、表地層の厚み変化と、表地層の表裏の結束間隔との関係を示したものであるが、結束間隔が小さい場合、表裏布帛の収縮差により厚み変化が起きてもその増加が制限され、充分な温度上昇抑制効果が発現しない。但し、結束間隔があまり大きすぎると、厚みは増加するものの、温度上昇を抑制するのに効果的な形態を維持できない可能性があり、結束間隔と同様、温度上昇を抑制するのに最適な厚みの値が存在することがわかる。
上記構成の積層耐熱防護衣の場合、好ましい表地層の厚み変化は２ｍｍ以上（３ｇ／ｃｍ２荷重下）であり、好ましい結束間隔は15～45ｍｍ、より好ましくは15～30ｍｍである。
中でも、表地層が二重織物布帛からなり、該布帛の表側布帛と裏側布帛の400℃におけるＴＭＡ収縮率差（150℃／分 昇温）が４％以上あり、表側布帛側よりISO17492(TPP)を用い、８秒間火炎曝露した時の二重織物の厚みの変化が２ｍｍ以上である表地層を使用することが特に好ましい。
また、表地層二重織物布帛が、表側布帛よりも裏側布帛の耐切創性が高いことが好ましい。
また該表地層は、より高い耐水性能や耐薬品性能を有する防護衣を提供するために、撥水發油加工していることが好ましく、加工法はコーティング法、ディッピング法、スプレー法、浴中浸漬法などの何れでも構わない。
中間層には、上記の織編物等に更にポリテトラフルオロエチレン等の透湿防水層膜フィルムをラミネート加工あるいはコーティングなどにより付与したものを用いることにより、優れた透湿防水機能と耐薬品性も付与することができる。
透湿防水機能を有する中間層及び／又は遮熱層は、それぞれ分離していても一体化していても構わない。
分離した３層積層構造であるほうが、層間空気層(断熱層)数が多く、遮熱性に有利であるが、積層厚みが同一であれば、遮熱性の大きな違いはないと考えられる。
遮熱層の厚みは1.80mm以上であることが好ましく、目付は110～150ｇ／ｍ２であることが好ましい。
上記の遮熱層は、高収縮性繊維を２～２０％以下混合させ、遮熱層構造物を８０℃以上の乾湿熱条件に接触させることにより収縮し、厚みが増した（嵩高な）遮熱層を得ることが好ましい。より嵩高な遮熱層を得るには、例えば、製織物の経糸に使用（設計配列）することにより８０℃以上の乾湿熱条件に接触した時、経方向に収縮が発生し、著しい嵩高な遮熱層が得られ、また、高収縮性繊維とそうではない繊維を交互配列させることより、断熱緩衝材（エアーパッキン）のような製編織物を得ることも可能となる。
その場合、厚み（嵩高性）方向の耐圧性・形態保持（洗濯・着用など）性を維持させるために、例えば前記断熱緩衝材（エアーパッキン）のようなものを得る際には、製編織物において一重と二重を交互に配列させたり、ボーダー状やストライプ状に配列させるとより効果が高い。また例えば、ボーダー状（一重／二重の相互配列）の場合、非・難収縮繊維が二重部分の表側を占め、更に該二重部分の表側は裏側よりも配列比率を多く（例えば、表：裏＝２：１）させるとよく、厚みを安定かつ耐久的に発現させるに非常に有用である。
このような織組織の設計図の例を図３～図５に示す。図５は交互配列の例を示すが、密度・交互ピッチを変動させることにより、厚みや厚みの耐久性を任意に変動させることが可能である。
かくして得られた遮熱層は、積層耐熱防護衣として使用する場合、表裏何れを火炎側（あるいは着用（人体）側）にしても構わないが、積層耐熱防護衣の防火服を着用することを想定すると、爪先や粗な指先などで引っ掛からないようにすることも重要であり、その場合には比較的凹凸の少ない側を着用（人体）側にする方が好ましいが、高遮熱性を優先する場合はこの限りではなく、前記断熱緩衝材（エアーパッキン）の様な凹凸（ランダム、交互、片側面の何れでもよい）が表裏何れに発現していてもよい。
上記本発明の積層耐熱防護衣は、火炎暴露の前後において、その断面形状が図６の如く変化し、下記のような優れた耐熱性を示す。
即ち、本発明の積層耐熱防護衣は、IS06330に準拠した洗濯５回後の該積層耐熱防護衣の厚みが2.5mm以上で、IS011613記載の欧州アプローチＡ（第４節）における熱伝達（放射暴露）試験(IS06942-2002)において、24℃温度上昇するまでに要する時間(RHTI24)が18秒以上であることが必要である。
　放射暴露試験(IS06942-2002)において、24℃温度上昇するまでに要する時間(RHTI24)が上記範囲に満たない場合は、充分な遮熱性が得られなかったり、防護衣の重量が重くなり過ぎ、ヒートストレスが低減できなくなる。
　また、本発明においては、上記の特性に加えて、さらに、
（１）IS011613記載の欧州アプローチＡ（第４節）における熱伝達（火炎暴露）試験(IS09151)において、24℃温度上昇するまでに要する時間(HTI24)が13秒以上である。
（２）IS011613記載の欧州アプローチＡ（第４節）における熱伝達（火炎暴露）試験(IS09151)において、24℃温度上昇するまでに要する時間(RHTI24)と、12℃温度上昇するまでに要する時間(RHTI12)との差が4秒以上である。
（３）IS011613記載の北米アプローチＢ（第５節）における（放射＋火炎暴露）試験(IS017492)において、24℃温度上昇するまでに要する時間(TPP)が１７．５秒以上である。
ことがさらに好ましい。
　かくして得られた本発明の積層耐熱防護衣は、その目付が400～600ｇ／ｍ２であることが好ましく、450±50ｇ／ｍ２であることがさらに好ましい。
また、本発明の積層耐熱防護衣は、IS013506において、2度＋3度火傷率が10%以下であることが好ましい。
　以下、実施例により本発明をさらに詳細に説明する。なお、実施例で用いた評価方法は下記の通りである。
（１）IS06942-2002：RHTI24(秒)
IS06942(2002)に準拠し、熱流束40ｋＷ／ｍ２において、放射暴露を開始してから銅製センサが24℃上昇するまでの時聞(RHTI24)を求めた。
（２）IS09151：HTI24(秒)
IS09151に準拠し、火炎暴露開始から銅製センサが24℃上昇する時間(HTI24)を求めた。
（３）IS017492:TPPtime(秒)
IS017492に準拠し、試験開始から24℃上昇(二度火傷)した際の時間(TPPtime(秒))を求めた。
（４）IS013506:2度十3度火傷率(%)
ISO13506に準拠し、2度＋3度火傷率を算出した。但し、この場合、頭部装備品は未着用のため、頭部を除いたボディのみで計測、算出した。尚、評価の際、綿100%上下下着およびユニフォームズボンを着用した後、その上に、耐熱防護衣を着用しテストに供した。
（５）厚み(mm)
IS06330に準拠し洗濯を５回行い、表地層、中間層及び／又は遮熱層を積層する。次いで、JISL1018(有毛編物)に準拠し、3ｇ／ｃｍ２下での厚みを測定した。
［実施例１］
表地層は、2層構造織物であり、該2層構造の表側にはポリメタフェニレンイソフタルアミド繊維(帝人テクノプロダクツ（株）製、Teijin conex、原着糸銘柄c/#NB32.2T51)と、コパラフェニレン・3,4`オキシジフェニレンテレフタルアミド繊維(帝人テクノプロダクツ（株）製、Technora、銘柄T330BK1.7T51)よりなる紡績糸(混綿比率メタ90:パラ10、番手40/1)を使用した。
また裏側にはコパラフェニレン・3,4'オキシジフェニレンテレフタルアミド繊維(帝人テクノプロダクツ（株）製、Technora、銘柄T330BK1.7T51)よりなる紡績糸を使用し、表裏結束には表側ポリメタフェニレンイソフタルアミド繊維(帝人テクノプロダクツ（株）製、Teijin conex、原着糸銘柄c/#NB32.2T51)と、コパラフェニレン・3,4`オキシジフェニレンテレフタルアミド繊維(帝人テクノプロダクツ（株）製、Technora、銘柄T330BK1.7T51)よりなる紡績糸を使用して、格子間隔15mmで結束して、経×緯密度を96×86本/inchで製織した。
得られた生機を通常の工程で、毛焼・糊抜き精練・撥水發油加工を行った。得られた布帛の目付は215ｇ／ｃｍ２、厚みはO.80mm(JISL1018準拠)であった。
中間層は、ポリメタフェニレンイソフタルアミド繊維(帝人テクノプロダクツ（株）製、Teijin conex、原着糸銘柄c/#NB32.2T51)と、コパラフェニレン・3,4'オキシジフェニレンテレフタルアミド繊維(帝人テクノプロダクツ（株）製、Technora、銘柄T330BK1.7T51)よりなる紡績糸(混綿比率メタ95:パラ5、番手40/1)を使用し、常法により製織・仕上加工後、ポリテトラフルオロエチレン製の透湿防水性フィルム（ジャパンゴアテックス社製）をラミネートしたものを使用し、目付120ｇ／ｃｍ２の透湿防水層を得た。
遮熱層は、ポリメタフェニレンイソフタルアミド繊維(帝人テクノプロダクツ（株）製、Teijin conex、原着糸銘柄c/#NB32.2T51)と、コパラフェニレン・3,4`オキシジフェニレンテレフタルアミド繊維(帝人テクノプロダクツ（株）製、Technora、銘柄T330BK1.7T51)よりなる紡績糸(混綿比率メタ95:パラ5、番手40/1)と、該紡績糸とBWS30%のポリエステルフィラメント(帝人ファイバー（株）製、銘柄TFYN301SDC33T12)との合撚糸を交互に経糸配列し、また緯糸には紡績糸を図３の組織で経88本/inch、緯90本/inchで製織し、糊抜き精練・仕上加工し、目付129ｇ／ｃｍ２、厚み2.1mm(JISLl018準拠)の遮熱層を得た。
得られた表地層、中間層ならびに遮熱層を５回洗濯し、3層を積層した厚みを測定した後、遮熱性などを評価した。結果を表１に示す。
［実施例２］
実施例１において、表地層の裏側にコパラフェニレン・3,4'オキシジフェニレンテレフタルアミド繊維のスパナイズフィラメント(帝人テクノプロダクツ（株）製、Technora、銘柄GTN220T)を用いた以外は、実施例１と同様に実施した。
［実施例３］
実施例２において、表地層の製織密度を経×緯密度を96×94本/inchとした以外は、実施例２と同様に実施した。
［実施例４］
実施例１において、表地層の表側紡績糸番手を36/1とした以外は、実施例１と同様に実施した。
［実施例５］
実施例１において、遮熱層の組織を図４の設計とした以外は、実施例１と同様に実施した。
［実施例６］
実施例１において、遮熱層を2枚貼り合１層とした以外は、実施例１と同様に実施した。
［実施例７］
　実施例１において、表地層の表裏結束の格子間隔を30mmとした以外は、実施例１と同様に実施した。
［比較例１］
実施例１において、遮熱層の厚みを1.27mmとし、3層を積層した厚みを2.4mmとした以外は、実施例１と同様に実施した。
Figure JPOXMLDOC01-appb-T000001

Claims (13)

  1. 表地層、透湿防水機能を有する中間層及び／又は遮熱層からなる積層耐熱防護衣であり、IS06330に準拠した洗濯５回後の該積層耐熱防護衣の厚みが2.5mm以上で、IS011613記載の欧州アプローチＡ（第４節）における熱伝達（放射暴露）試験(IS06942-2002)において、24℃温度上昇するまでに要する時間(RHTI24)が18秒以上であることを特徴とする積層耐熱防護衣。
  2. 　IS011613記載の欧州アプローチＡ（第４節）における熱伝達（火炎暴露）試験(IS09151)において、24℃温度上昇するまでに要する時間(HTI24)が13秒以上である請求項１記載の積層耐熱防護衣。
  3. 　IS011613記載の欧州アプローチＡ（第４節）における熱伝達（火炎暴露）試験(IS09151)において、24℃温度上昇するまでに要する時間(HTI24)と、12℃温度上昇するまでに要する時間(HTI12)との差が4秒以上である請求項１又は２記載の積層耐熱防護衣。
  4. 　IS011613記載の北米アプローチＢ（第５節）における（放射＋火炎暴露）試験(IS017492)において、24℃温度上昇するまでに要する時間(TPP)が１７．５秒以上である請求項１～３のいずれか１項に記載の積層耐熱防護衣。
  5. 積層耐熱防護衣の目付が400～600ｇ／ｍ２である請求項１～４のいずれか１項に記載の積層耐熱防護衣。
  6. 積層耐熱防護衣の目付が450±50ｇ／ｍ２である請求項１～５のいずれか１項に記載の積層耐熱防護衣。
  7. 遮熱層の厚みが1.80mm以上である請求項１～６のいずれか１項に記載の積層耐熱防護衣。
  8. 遮熱層の目付が110～150ｇ／ｍ２である請求項１～７のいずれか１項に記載の積層耐熱防護衣。
  9. 積層耐熱防護衣がIS013506において、2度＋3度火傷率が10%以下である請求項１～８のいずれか１項に記載の積層耐熱防護衣。
  10. 表地層が二重織物布帛からなり、該布帛の表側布帛と裏側布帛の400℃におけるＴＭＡ収縮率差（150℃／分 昇温）が4％以上あり、表側布帛側よりISO17492(TPP)を用い、8秒間火炎曝露した時の二重織物の厚みの変化が2ｍｍ以上である請求項１～９のいずれか１項に記載の積層耐熱防護衣。
  11. 表地層二重織物布帛が、表側布帛よりも裏側布帛の耐切創性が高い請求項１～１０のいずれか１項に記載の積層耐熱防護衣。
  12. 遮熱層が目付100～150ｇ／ｍ2で、ＢＷＳ10～50％の高収縮性繊維を2～20％使用した請求項１～１１のいずれか１項に記載の積層耐熱防護衣。
  13. 遮熱層が変わり二重織物である請求項１～１２のいずれか１項に記載の積層耐熱防護衣。
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