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WO2024038467A1 - Étoffe légère résistante à la flamme - Google Patents

Étoffe légère résistante à la flamme Download PDF

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Publication number
WO2024038467A1
WO2024038467A1 PCT/IN2023/050772 IN2023050772W WO2024038467A1 WO 2024038467 A1 WO2024038467 A1 WO 2024038467A1 IN 2023050772 W IN2023050772 W IN 2023050772W WO 2024038467 A1 WO2024038467 A1 WO 2024038467A1
Authority
WO
WIPO (PCT)
Prior art keywords
fabric
light
flame resistant
resistant fabric
weight flame
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.)
Ceased
Application number
PCT/IN2023/050772
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English (en)
Inventor
Prashant Verma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tarasafe International Pvt Ltd
Original Assignee
Tarasafe International Pvt Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tarasafe International Pvt Ltd filed Critical Tarasafe International Pvt Ltd
Publication of WO2024038467A1 publication Critical patent/WO2024038467A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • 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
    • D03D15/208—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 cellulose-based
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/242—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads inorganic, e.g. basalt
    • 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
    • D03D15/50—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
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2101/00—Inorganic fibres
    • D10B2101/02—Inorganic fibres based on oxides or oxide ceramics, e.g. silicates
    • D10B2101/04—Asbestos
    • 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
    • D10B2201/01—Natural vegetable fibres
    • D10B2201/06—Jute
    • 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
    • D10B2201/10—Bamboo
    • 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
    • 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
    • D10B2321/101—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of unsaturated nitriles, e.g. polyacrylonitrile, polyvinylidene cyanide modacrylic
    • 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
    • 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
    • D10B2401/00—Physical properties
    • D10B2401/04—Heat-responsive characteristics

Definitions

  • This invention relates to a light-weight flame resistant fabric.
  • this invention relates to a light-weight flame resistant fabric with a grid wave structure for use to protect human beings from thermal hazards of flame and electrical arc.
  • Flame-resistant fabrics are used in making articles such as protective clothing, drapes, tents, tarps, and furniture upholstery. These articles are used against thermal hazards arising from exposure to heat, flame, and electric arc.
  • the flame-resistant fabrics inhibit the propagation of flame, generate char, and prevent the generation of volatile gases to provide protection against thermal hazards.
  • the treated flame retardant fabric primarily consists of a cellulose-rich fabric blend including thermoplastic fibers and antistatic fibers. This fabric is treated with a phosphorous-based flame retardant chemical such as Pyrovatex® CP and Proban®.
  • Inherently flame-resistant fabrics primarily consist of blends of inherent flame-resistant fibers along with cellulosic fibers, thermoplastic fibers, and anti-static fibers. Inherently flame-resistant fibers by their nature, do not need any additional flame retardant chemical finish. Examples of inherent flame-resistant fibers are asbestos, carbon, polyphenylene benzobisoxazole, polybenzimidazole, para-aramids, meta-aramids, fluorocarbons, acrylonitrile polyphenylene sulfides, melamines and polyimides.
  • the flame-resistant fabrics also need to provide thermal insulating property. Better thermal insulation will reduce or eliminate heat-related and burn- related injuries in human protection applications. Thermal insulation of the fabric is not solely dependent on the flame retardant chemicals or inherent flame-resistant fibers used in making the fabric. Other factors which improve thermal insulation are the weight of the fabric, the ability to trap air, and the physical contact area on the surface to be protected.
  • Thermal insulation of the fabric used in the thermal protective application is measured as per the EN ISO 11612. As per the standards, convective, contact, and radiant heat resistance are measured to determine the overall thermal performance of the flame-resistant fabric. Here the fabric is exposed to a standard source of heat and flame and the rise in temperature is measured by a sensor placed behind the fabric. The time required to increase the temperature by a certain degree Celsius is noted and the fabric is graded in different categories based on the recorded time.
  • the flame-resistant fabrics also provide thermal insulation as tested per NFPA 21 12.
  • the fabric is tested against a flame source with an exposure heat flux of 83.55 kW/m 2 (2.0 cal/cm 2 sec).
  • a sensor containing a copper calorimeter is placed on top of the specimen and measures the heat transfer through the fabric specimen. The test measures the amount of heat passed through the specimen to cause a second-degree burn. TPP ratings are measured with the sensor both in "contact" with the specimen and "spaced" 6 mm away from the specimen.
  • the weight of the fabric is measured in grams per square meter (GSM). Increasing the weight of the fabric improves the thermal insulation performance of the fabric. Increased air trapping can be achieved by using a multi-layer fabric structure, use of non-woven fabric, use of fleece structure or imparting a three-dimensional structure to the fabric. A three- dimensional structure will also help in minimizing the contact area exposed to flame and the surface to be protected.
  • US patent publication no. US8501639B2 discloses a fabric consisting of a single layer of a non-woven substrate, wherein the non-woven substrate is treated with a finish comprising one or more flame retardant phosphorous compounds or nitrogen compounds, wherein the non-woven substrate is a non-woven fabric comprising cellulosic fibers and has a basis weight ranging from 3.0 to 8.0 ounces per square yard, wherein the finish is applied to the non-woven substrate in an amount ranging from 15 to 130 percent solids, based upon the weight of the non-woven substrate, wherein the single-layer, finished fabric has a thickness ranging from 0.01 to 0.15 inches and a contact thermal protective performance value of at least 4.5, wherein the non-woven substrate is a non-woven, stitch-bonded fabric, and wherein the non-woven substrate comprises polyester fibers.
  • US patent publication no. US20120270456A1 disclose a flame retardant fabric for use in personal protective clothing which provides a high level of protection from flames or other sources of heat wherein said fabric is made from a mixture of a primary yarn which is a blend of FR cellulosic fibers with high-temperature resistant polymer fibers and a secondary yarn which is a twisted yarn containing a continuous synthetic filament yarn.
  • Another disadvantage associated with the prior art is that the air trapping in the fabric is less.
  • an object of the present invention is to provide a light-weight flame resistant fabric which obviates the disadvantages associated with the prior art.
  • Another object of the present invention is to provide a light-weight flame resistant fabric with reduced weight.
  • a further object of the present invention is to provide a light-weight flame resistant fabric which is cost-effective.
  • Another object of the present invention is to provide a light-weight flame resistant fabric which provides a soft, flexible finish to the fabric that may be suitable for use in a wide range of products.
  • the fabric is dyed to a variety of shades and/or patterns.
  • Yet another object of the present invention is to provide a light-weight flame resistant fabric which is durable enough for long-term usage and can withstand multiple wash cycles.
  • Still another object of the present invention is to provide a light-weight flame resistant fabric which is being used in protective garments applications, for example, fire-resistance suits, fire resistance gloves, fire blankets, blast blankets, welding suits, welding drapes, welding pads, and welding filters and also being used in other types of protective garments which required protection from multiple hazards.
  • a further object of the present invention is to provide a light-weight flame resistant fabric which is used in, for example, mattresses, chairs, sofas, and seats for home furnishing or that used in vehicles.
  • Another object of the present invention is to provide a light-weight flame resistant fabric which is used in fashion apparel, for example, shirts, trousers, skirts, blouses, jackets, frocks, and inner-wear.
  • Another object of the present invention is to provide a light-weight flame resistant fabric which includes containers, for example, fire resistant document pouches, fire-resistant safes, packaging containers for explosives, shipping containers for explosives, and fire-resistant ammunition cases.
  • containers for example, fire resistant document pouches, fire-resistant safes, packaging containers for explosives, shipping containers for explosives, and fire-resistant ammunition cases.
  • Another object of the present invention is to provide a light-weight flame resistant fabric which improves thermal protection and ease of movement without increasing the weight or the cost of the fabric.
  • a light-weight flame resistant fabric comprising a base structure made of fiber yarns having a low boiling water shrinkage property, grid structures, made of filament yarns of a thermoplastic polymer having a high boiling water shrinkage property, being formed in the base structure at an interval of 3 - 20 mm and subsequently heat treated such that to create wave structure in the grid pattern at both sides of the fabric so as to allow entrapment of air in the fabric and minimized contact surface.
  • the yarns of the base structure are made of a blend of cellulosic fibers, for example, cotton, hemp, viscose, rayon, bamboo, jute, linen, and modal fiber wherein the percentage weight of one of the fibers present in the blend is not less than 60 %.
  • the base yarn of the base structure is made of inherently flame-resistant fibers or a blend of inherent flame-resistant fibers, for example, meta-aramids, para-aramids, inherent fire-resistant viscose, modacrylic, acrylonitrile, asbestos, carbon, wool, polyphenylene benzobisoxazole, polybenzimidazole, fluorocarbons, polyphenylene sulfides, melamines and / or polyimide.
  • inherent flame-resistant fibers for example, meta-aramids, para-aramids, inherent fire-resistant viscose, modacrylic, acrylonitrile, asbestos, carbon, wool, polyphenylene benzobisoxazole, polybenzimidazole, fluorocarbons, polyphenylene sulfides, melamines and / or polyimide.
  • the grid yarn is made of a polyester, or a blend of the polyester, for example, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), and I or polytrimethylene terephthalate (PTT).
  • PET polyethylene terephthalate
  • PBT polybutylene terephthalate
  • PTT polytrimethylene terephthalate
  • Figure 1 illustrates a perspective view of a weave structure of the invented fabric
  • Figure 2 illustrates a perspective view of waves in the invented fabric.
  • Light-weight flame resistant fabric is herein described with numerous specific details so as to provide a complete understanding of the invention. However, these specific details are exemplary details and should not be treated as the limitation to the scope of the invention.
  • the word “comprises” or variations such as “comprises or comprising”, will be understood to imply the inclusions of a stated element, integer or step, or group of elements, integers or steps, but not the exclusions of any other element, integer or step or group of elements, integers or steps.
  • the light-weight flame resistant fabric comprises a base structure (1 10) made of fiber yarns (1 1 1 & 1 12) which have a less than 7 % (low) boiling water shrinkage property.
  • Grid structures (120) are made of filament yarns (121 & 122) of a thermoplastic polymer which have a 9 - 25 % (high) boiling water shrinkage property.
  • the grid structures (120) are formed in the base structure by weaving therewith at an interval of 3 - 20 mm.
  • the woven fabric is exposed to heat treatment at 60 - 150 °C temperature in a stenter for 1 - 5 minutes such that to create wave structure (200) (shown in fig. 2) in the grid structures I pattern on both sides of the fabric so as to allow air entrapment in the fabric and minimized contact surface.
  • the base structure (1 10) is weaved by warp yarns (1 1 1 ) and weft yarn (1 12).
  • the yarns (1 1 1 & 112) are, for example, ring-spun yarn, compact yarn, siro spun yarn and open-end spun yarn, which has a low boiling water shrinkage, preferably below 7%.
  • the yarns (11 1 & 1 12) have a linear density of 8's Ne to 100’s Ne, preferably between 10’s Ne and 40’s Ne.
  • the yarns (1 1 1 , 1 12) of the base structure (1 10) are made of cellulosic fiber or a blend of cellulosic fiber, for example, cotton, rayon, modal, viscose, hemp, bamboo, jute and / or linen.
  • the yarns (1 1 1 , 1 12) of the base structure (110) are made of a blend of cellulosic fiber, for example, a blend of cotton, hemp, viscose, rayon, bamboo, jute and modal fiber wherein the percentage weight of one of the fibers presents in the blend is not less than 60 %. Examples of such blends are Cotton: Hemp blend in a ratio of 60:40; Cotton: Modal blend in a ratio of 80:20.
  • the base yarn (1 1 1 , 1 12) of the base structure (1 10) is made of a blend of cellulosic fiber with thermoplastic fibers wherein the percentage of cellulosic fiber is not less than 60% by weight.
  • the thermoplastic fibers include but are not limited to polyester, polypropylene, and polyamide.
  • An example of such a blend is Cotton: Nylon in a blend ratio of 88:12; Cotton: Polyester in a blend ratio of 75:25.
  • the base yarn (1 1 1 , 1 12) of the base structure (1 10) is made of inherent flame resistant fibers or a blend of inherent flame resistant fibers, for example, meta-aramids, para-aramids, inherent fire- retardant viscose, modacrylic, asbestos, carbon, polyphenylene benzobisoxazole, polybenzimidazole, fluorocarbons, polyphenylene sulfides, melamines and / or polyimide.
  • antistatic fibers are used in the fiber blend to impart anti-static property to the fabric. Use of 1 to 5% antistatic fiber is preferred.
  • the grid structure (120) is woven with warp yarns (121 ) and weft yarn (122).
  • the grid yarns (121 , 122) are continuous filament yarns of thermoplastic polymer, with high boiling water shrinkage.
  • the filament yarns may be untwisted, twisted or intermingled.
  • the boiling water shrinkage of grid yarn (121 , 122) ranges from 9% to 25%.
  • the grid yarns have a tensile strength of at least 2.4 cN/Dtex and elongation to break of at least 25%.
  • the grid yarns with a low initial modulus of 15 to 35 cN/Dtex is preferred.
  • the grid yarn (121 ,122) has a linear density ranging from 20 deniers to 600 deniers.
  • the grid yarn (121 ,122) comprises a core yarn and sheath yarn.
  • the core is made from a continuous filament yarn of thermoplastic polymer, with high boiling water shrinkage, whereas the sheath is made of a group of fibers like cellulosic fiber and inherent flame resistant fibers.
  • the grid yarn (121 ,122) is made of a polyester, or a blend of the polyester, for example, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), and I or polyurethane terephthalate (PTT).
  • PET polyethylene terephthalate
  • PBT polybutylene terephthalate
  • PTT polyurethane terephthalate
  • the fabric (weaved base and grid structure) during the finishing process is exposed to a temperature of more than 60 °C, more preferably at a temperature of 80 °C, the high shrinkage grid yarns (121 , 122) show higher shrinkage, compared to the base yarn (1 1 1 , 1 12).
  • the length of grid yarn on all four sides is smaller than the length of base yarn. This excess length cannot remain planar to the fabric surface creating a peak (211 ) or a valley (212) (shown in fig. 2).
  • the subsequent grids surrounding a grid with a peak tend to form a valley. This results in a three-dimensional grid wave (210) and waves structure (200).
  • the peak height of the wave (210) ranges from 1 mm - 6mm, more preferably in the range of 1 mm - 3 mm.
  • the weight of the fabric is in the range of 60 to 500 GSM, more preferably in the range of 150 GSM to 350 GSM.
  • a testing and research data of the present invention of a light-weight flame resistant fabric are shown in the following table. 1 . Also, the testing data is compared with a conventional retardant fabric.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Woven Fabrics (AREA)

Abstract

L'invention concerne une étoffe légère résistante à la flamme, comprenant une structure de base, constitué de fils de fibres ayant une propriété de faible rétraction à l'eau en ébullition. Des structures en grille sont constituées de fils de filament d'un polymère thermoplastique ayant une propriété de rétraction élevée à l'eau d'ébullition, qui sont formés dans la structure de base à un intervalle de 3 à 20 mm et ensuite traités thermiquement de manière à pour créer des structures ondulées dans la structure de grille des deux côtés de l'étoffe, de façon à permettre un piégeage de l'air dans l'étoffe et une surface de contact réduite au minimum.
PCT/IN2023/050772 2022-08-18 2023-08-12 Étoffe légère résistante à la flamme Ceased WO2024038467A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN202231047067 2022-08-18
IN202231047067 2022-08-18

Publications (1)

Publication Number Publication Date
WO2024038467A1 true WO2024038467A1 (fr) 2024-02-22

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PCT/IN2023/050772 Ceased WO2024038467A1 (fr) 2022-08-18 2023-08-12 Étoffe légère résistante à la flamme

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007056392A (ja) * 2005-08-24 2007-03-08 Toray Ind Inc 難燃性ポリアミド繊維および難燃性布帛
US20070270067A1 (en) * 2004-10-15 2007-11-22 Teijin Fibers Limited Crimped Filament-Containing Woven or Knitted Fabric Manifesting Roughness Upon Wetting with Water, Process for Producing the Same and Textile Products Made Therefrom
US20100269242A1 (en) * 2007-10-19 2010-10-28 Werner Stubiger Material Structure Made of Flame-Retardant Material, Especially for Reflective Clothing
US20140234592A1 (en) * 2013-02-18 2014-08-21 W. L. Gore & Associates, Gmbh Flame Protective Fabric Structure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070270067A1 (en) * 2004-10-15 2007-11-22 Teijin Fibers Limited Crimped Filament-Containing Woven or Knitted Fabric Manifesting Roughness Upon Wetting with Water, Process for Producing the Same and Textile Products Made Therefrom
JP2007056392A (ja) * 2005-08-24 2007-03-08 Toray Ind Inc 難燃性ポリアミド繊維および難燃性布帛
US20100269242A1 (en) * 2007-10-19 2010-10-28 Werner Stubiger Material Structure Made of Flame-Retardant Material, Especially for Reflective Clothing
US20140234592A1 (en) * 2013-02-18 2014-08-21 W. L. Gore & Associates, Gmbh Flame Protective Fabric Structure

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