• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The fabric of the present invention is a flame resistant fabric for use in personal protective apparel that offers high wearing comfort, protection from flame and other heat sources such as electric arc and liquid metal splashes, characterized in that it is made from a yarn that is intimate FR cellulose fibers with high temperature resistant polymer fibers and standard synthetic flammable synthetic fibers.
    公开号:AT511288A1
    申请号:T1953/2010
    申请日:2010-11-24
    公开日:2012-10-15
    发明作者:
    申请人:Chemiefaser Lenzing Ag；
    IPC主号:
    专利说明:

    PL0505: - * ·. , ,. * * · * ». ·· ·· · · · *.). , .
    Flame resistant fabric for protective clothing
    A new flame retardant fabric has been invented which utilizes the properties of known flame resistant fibers in combination with non-flame resistant fibers to produce a fabric with exceptional flame resistance, surprising physical properties, and improved wearer comfort over other flame resistant fabrics. "Flame-resistant" is a property of a material, such as As a fiber or a substance that does not burn under normal weather conditions. If the material comes into contact with flames, it will not support combustion if there is no contact with the flames. "Flame-resistant" should not be confused with "flame retardant," a term used to describe a chemical that gives a fabric flame-retardant properties. Flame retardant is also used to describe fabrics which, while having a reduced burn rate, do not provide flame retardants to the wearer.
    It is well known that flame resistant fabrics, and especially those made from flame resistant fibers, can be used to protect against flame. Firefighters usually wear clothing that protects the wearer from flames in dangerous situations. The clothing is designed to prevent the wearer's skin from being exposed directly to the flames, thereby reducing the risk of burn injuries.
    Other occupations that require protection from flames include police and security personnel, military personnel, and gas and oil workers.
    Protective clothing for protection against molten metal splashes is worn by welders and workers in the metal industry. In the metal industry are used for melting metal and producing
    POSSIBLE • · ♦ · PL0505 ......; '.: · * · · · · ··· ·· Μ ,,
    Arcs used high energies. Protective clothing is therefore required to protect against molten metal splashes and arcing faults. Employees of utilities working on high voltage power lines may be exposed to small metal splashes 5 in the event of accidental arc generation.
    It is highly desirable that the fabrics used in these applications are comfortable to wear, have good physical properties, and visually conform to the profession. B. in terms of color, style and comfort. Ten workers wearing personal protective clothing are usually working in a work environment with many stress factors, where high workloads result in high physiological energy consumption. This creates body heat and moisture under clothing.
    It is therefore highly desirable that the fabrics used to make these garments can dissipate body heat and moisture to prevent overheating (heat loading) of the wearer's body. Made from fabrics that allow body heat and moisture to escape, garments are made that are more comfortable to wear. Furthermore, a longer working time can be achieved without exceeding the maximum physiological burden.
    It is well known that cellulosic fibers can offer improved comfort compared to synthetic fibers. The reason for this is that cellulose fibers are hydrophilic and absorb water vapor and liquid water. Control of the movement and distribution of the water in fabric 25 is an inherent property of a cellulosic fiber.
    In the intended fields of application, the substances must not be influenced by the activities to which they are exposed. This means that they must have both high tear resistance and abrasion resistance, as well as good resistance to so-called snagging. 30 Furthermore, the appearance of the substance over a longer period of use and care must be maintained. Therefore, the fabrics must be washable and 2
    SUBSEQUENTLY ♦ · ♦ ·
    PL0505 wash stable, low in shrinkage and low in pilling. The dyeings of the fabrics must also be washfast and lightfast.
    Organizations that provide employees with personal protective clothing usually need to ensure that the clothing matches the corporate color of the organization. There are also many instances where the color of clothing is important to its function, such as: Black for riot police or neon yellow, orange or green for fire and industrial workers. Therefore, it is highly desirable that the fabrics used in these applications can be easily dyed in a wide range of colors and have good fastness properties.
    The present invention is a flame resistant fabric intended for use in garments suitable for the protection of workers in the metal industry and utilities in accidental contact with flame, molten metal except alumina and arcing faults. The garment produces garments that are comfortable to wear, have minimal impact on the physiological performance of the wearer, and have excellent physical properties.
    State of the art
    The ability of textile materials to be flame resistant and thus protect the underlying materials varies considerably. Most fabrics made of natural fibers and synthetic fibers burn when they come into contact with flames. The rate of combustion and flammability depend primarily on the chemical properties of the polymer from which the fiber was made and on the structure of the fabric. Many polymers, such as. B. cellulose, polyester and nylon are highly flammable. The burning rate decreases the heavier the fabric is. Wool is the most widely used fiber that is reasonably flame retardant - heavy woolen fabrics are flame retardant and traditionally used as a material for firefighting garments. 3 Subsequent PL0505 ··· · · ·. I ί * .. *: ::: * * * ♦ · · · ·· ** · · · · · > · * * · * ··· «· · ·« «
    Fabrics for protection against molten metal spray, such as those used in the metal industry, including welding applications, are often extremely heavy and stiff. The fabric weights are between 330 and 600 g / m2. They are made of materials such. B. flame-resistant treated cotton.
    Fabrics can be treated to become flame resistant. For this purpose, the substance is mixed with a suitable chemical substance. The first substances used to flameproof cotton fabrics were inorganic salts such as aluminum hydroxide, antimony trioxide and borates. Although these led to the desired success, but lost their flame-resistant property during washing.
    Organic, phosphorus-containing compounds that react either through polymerization or crosslinking with the cotton are more durable and are commonly used. Two leading brand names are Proban® and Pyrovatex®. Although these types of equipment are durable, they can be removed by treatment with aggressive chemicals. In addition, the efficiency of the equipment decreases after repeated washing. This type of equipment leads to a disadvantageous stiffening of the substance. Such materials are used to protect against flames, molten metal splashes and arcs. While not in contact with flames, molten metal or arcs, such materials will not burn, but become highly brittle and may break, exposing the wearer's skin to harm.
    The protective properties of substances against liquid iron splashes are classified according to a three-stage system: E1 describes the lowest resistance, whereas E3 stands for the highest resistance to molten iron. For a E3 fabric, a flame-retardant treated cotton fabric weighing at least 450 g / m2 is required. Conventional flame retardant cotton fabrics with a weight of 290 g / m2 have only class E1 properties. 4 REPLACED | PL0505
    The first flame resistant synthetic fibers were made by the viscose process. A high viscosity, liquid flame resistant additive was dispersed in the spinning solution prior to extrusion of the fiber. The liquid was physically entrapped as the smallest bubbles in the cellulose. Although a flame-resistant fiber was obtained, the additive could be removed by repeated washing. The strength of the fiber decreases as the amount of additive added increases. The additive was withdrawn due to safety concerns and fiber production was discontinued.
    An improved flame resistant viscose fiber can be made by the use of a solid, pigment-containing flame retardant. Such a fiber is called Viscose FR. The pigment is finely ground and mixed with the spinning solution prior to extrusion of the fiber. The result is a dispersion of the insoluble particulate additive in the fiber. The strength of the fiber decreases as the amount of additive added increases. All the cellulose in the fiber contains the additive and it can not be removed by washing, normal dyeing or refining. Thus, an inherently flame resistant fiber is obtained by this method. A well-known fiber of this type is Visil® which contains a flame retardant consisting of a silica pigment.
    A further improvement can be achieved by adding the solid pigment-containing flame retardant to the spinning solution used to make modal fiber. The modal process is a modified viscose process to produce a fiber with a higher strength and a higher wet modulus than is the case with normal viscose. The fiber produced by this process and containing the flame retardant pigment is inherently flame resistant. It is stronger than the fiber produced by the viscose process and has a higher strength and better stability. Such a fiber is referred to as "Modal FR" in the context of the present invention. It should be noted, however, that the properties of the fiber do not conform to the BISFA definition (INTERNATIONAL BUREAU FOR THE STANDARDIZATION OF MAN-MADE
    REPLACED PL0505 FIBERS) of the modal fiber. Proven flame retardant pigments of such fibers are organic phosphorus compounds. The pigment used is preferably Exolith® (2'-oxybis [5,5-dimethyl-1,3,2-dioxaphosphorinane] 2,2'-disulphide).
    In the clothing sector, Modal FR in its pure form (100%) is only used in a few application areas, such as: Example, in metallized materials or fabrics that consist of a mixture of two or more yarns. In their pure form, the properties of the Modal FR are in many ways inadequate compared to other products.
    In the same way Lyocell fibers can be made flame resistant. Due to the different production conditions, other pigments are usually suitable. Such a fiber is called Lyocell FR.
    An alternative method of making a FR fiber is to modify the polymer from which the fiber was obtained so that, while inherently flame retardant, it can still be formed into a fiber. There are many examples of such fibers. However, among the fibers used in workwear are mainly meta-aramid, para-aramid, polybenzimidazole (PBI), polyester FR and modacrylic.
    Flame resistant fibers can often be used alone to make functional fabrics. In addition, they can be combined to produce fabrics also in blends with each other and with non-flame resistant fibers. Such blended fabrics may have properties that are composed of the properties of the component fibers.
    Many flame resistant fabrics are available on the market. The following fabrics are most commonly used for personal protective clothing (mixing ratios are given in% w / w): flame resistant treated cotton (100%); Flame retardant treated cotton / polyamide (PA) blend (Type 85/15); flame retardant treated polyester / cotton blend (type 50/50); Modacrylic / Cotton Blend (Type 55/45), Modacrylic / Cotton Aramid Blend (Type 25/25/50); Modacrylic / lyocell
    POSSIBLE 6 PL0505: :::! ··· :: * .. * * · · · ··· «« «* * * · · * * * * t # * * ·· EN ··» | | (/ Aramaid blend (type 25/25/50); pure meta-aramid (100%); meta-aramid / para-aramid blend (type 80/20); meta-aramid / para-aramid / Antistatic mixture (type 93/5/2), meta-aramid / modal FR mixture (type 70/30), meta-aramid / modal FR mixture (type 50/50, meta-aramid / modal 5 FR mixture (type 35/65)).
    Each of these types of fabrics has its advantages and disadvantages, which are listed in Table 2 (see Example 2). Garment manufacturers and designers justify their decision in the choice of fabrics by assessing their overall properties and efficiency 10 on the basis of a risk analysis. None of the substances meets all the criteria of an ideal substance, as they are mentioned in Table 2.
    Fabrics made of flame-resistant treated cotton and cotton blends have poor to mediocre efficiency and sufficient wearing comfort. However, they are relatively easy to process 15 and are the most affordable. Modacrylic mixtures have sufficient efficiency. However, the wearing comfort is low and they cost more. Aramid fabrics have good properties and good washing performance, but are low in wear comfort and expensive. None of the currently available fabrics are rated as good at metal spray or 20 arc faults. Only the substance from Meta-Aramid / Modal FR is attributed a good breaking behavior.
    Adding Modal FR to an Aramaid fabric improves its overall performance and reduces costs.
    Each of the currently available fabrics has 25 disadvantages in one or more points. No single fabric has good total and protective properties at a reasonable cost, high wearing comfort, good processability and good care properties. At this point, the invention starts,
    Objective 30 The object of the present invention is to produce a material for the production of personal protective clothing, which is the abovementioned
    REPLACED PL0505:. : 1 ·············································································································································································································· It should have excellent properties regarding the safety of the wearer, in particular with regard to protection against metal splashes, arc protection and break-up behavior. It should also be able to be produced at a lower cost and with better wearing comfort and optical properties than current products, in order to ensure that garments made therefrom have all the properties required for their intended uses.
    The products currently on the market protect the wearer well. However, they are expensive, which limits their use. They are at least partially made of fibers with poor wearing comfort and poor optical properties, and their production is difficult because of poor dyeability. The materials currently used, in particular in the metal-melting industry, are stiff and heavy (fabric weights from 330 to 600 g / m 2). For electric utilities, isolation from arc faults and improved breakdown characteristics after contact with arcing faults are important safety requirements. There is a need for a substance that has the following properties:
    FOLLOW-UP 8 1
    Protection o Inherent flame retardant properties during the life of the product o Exterm Lightweight fabrics that provide maximum protection against liquid metal splashes o Improved break-up properties after contact with arcing faults o Very good break-open behavior after contact with flames; the fabric remains soft and intact o Cool touch immediately after contact with flames o Very good insulation against heat and flames • Mechanical properties and durability o High tear resistance o Low pilling o Excellent abrasion properties. • Physiological properties PL0505 o Good thermal properties for more efficient cooling of the wearer, o Improved physiological properties of the wearer • Comfort: o Higher and faster moisture absorption o Good short-term water absorption o Cool Touch • Processability o Fabric can be piece-dyed o Wide range of colors possible o Fabric can be imprinted with vat or reactive dye systems • Washing performance or wash-off time! o Low shrinkage during washing • Environment / sustainability o Fibers that comply with ÖKOTEX Standard 100 o Fibers that are particularly sustainable
    description
    The product of the invention is a flame retardant (FR) fabric for use in personal protective clothing, which provides high protection against flames and other heat squeeze such. Molten metal splats and arcing faults, and which has been made from a yarn which is an intimate blend of FR cellulosic fibers with high temperature resistant polymer fibers and standard synthetic flammable synthetic fibers.
    The mixing ratio of the yarn is preferably: between 65 and 90% FR cellulose fibers, between 10 and 20% high temperature resistant polymer fibers and between 10 and 20% synthetic standard fibers, more preferably a mixing ratio of 65 to 75% modal FR,
    POSSIBLE PL0505 :::: · ** ·: · '** * * ::::. *:. ::
    I * M contains 12.5 to 17.5% high temperature polymer fibers and 12.5 to 17.5% standard synthetic flammable fibers.
    It is surprising that a fabric with this fiber content can provide such exceptional properties. In general, one skilled in the art will believe that the burning and protective properties of a fabric improve with increasing aramid fiber content. The fabric according to the invention contains a high proportion of FR-cellulose fiber and nevertheless offers better properties than currently available fabrics with a high aramid fiber content.
    Antistatic properties of the fabric can be achieved by adding 1 to 5% of staple antistatic fibers to blend or by creating an antistatic screen by incorporating yarns into the fabric comprised of the base yarn twisted with antistatic filament yarns. All fibers used in the blend may be jet-dyed (spun-dyed) fibers.
    The FR cellulosic fiber of the yarn is a cellulosic fiber made flame resistant during or after fiber production by the addition of a FR active ingredient.
    The FR-cellulose fibers of the yarn are selected from the group consisting of Modal FR, Viskose FR and Lyocell FR. In particular, the FR cellulose fibers of the yarn are Modal FR fibers. The fibers can be both dyed (spin dyed) and flocked, combed, yarn or fabric dyed.
    The high temperature resistant polymer fibers are selected from the group consisting of para-aramid, meta-aramid, aromatic polyester (PES), PBI (polybenzimidazole) and blends of these fibers. From the group of high temperature resistant polymer fibers, para-aramid fibers are preferably selected. The fibers can be both dyed (spin dyed) and flake dyed as staple fibers or comb dye dyed.
    The standard flammable synthetic fibers are selected from the group consisting of polyamide 6 (PA6), polyamide 6 (PA6.6) and polyester 10
    SUBSEQUENT
    PL0505 (PES) belong. Preferably, the fibers are PA6, and particularly preferred is a high strength PA6 fiber. The fibers can be both dyed (spin dyed) and flake dyed as staple fibers or combed, yarn or fabric dyed.
    In particular, the product of the invention is a fabric consisting of a yarn which is a blend of Modal FR and a para-aramid or meta-aramid, or a blend of the two aramids and high-tenacity, fire-retardant PA6 fiber. The fabric can either be woven or knitted or made using nonwoven technologies.
    Warp and weft of the woven fabric consist of the yarn according to the invention.
    Although the fabric contains a proportion of standard flammable synthetic fibers, it has exceptional firing and protection properties. It is non-flammable, does not break when exposed to flames, and continues to provide flame protection. Furthermore, the fabric offers high protection against molten metal ("metal splashes") and excellent arc protection even at low weight. For the sake of good order, it should be pointed out that the substance according to the invention offers no protection against molten aluminum oxide.
    All fibers of the mixture can be jet-dyed (i.e., spun dyed). This creates a substance with a high color fastness. So far, only very expensive aramids were available as jet-dyed fibers.
    The exceptional firing and protective properties of the substance of the invention were previously only in much heavier, much more expensive materials such. PBI, pure aramid (100%) or Lenzing FR / meta-aramid and heavy Modacryl - or flame-resistant treated cotton blends and fibers based on inorganic - possible.
    All this is achieved with a fabric that has lower fabric weight, better protection properties, and lower manufacturing costs than other fabrics with similar properties. In addition, the fabric has a higher wearing comfort due to the high content of cellulose fibers. 11
    I SUBSCRIBE PL0505 • · • · * ·
    The yarn is made from staple fibers by spinning the yarn by the use of conventional techniques, such as yarn spinning. B, ring spinning, rotor spinning, air jet spinning, worsted spinning, half worsted yarn spinning or any variation of these methods used in yarn spinning. The staple length of the fibers for the first yarn may be in a range of 35 mm to 160 mm, but preferably between 75 mm and 90 mm. The staple length must be suitable for the selected spinning process. At least the FR-cellulose fibers in the yarn of the invention should have this staple length, but in a preferred embodiment of the invention all fibers in the inventive yarn should have this staple length.
    The use of fibers with a staple length between 75 and 90 mm ensures longevity even for lightweight fabrics with low pilling and high strength, tear resistance and abrasion resistance. At the same time, the yarns according to the invention and the fabrics produced from these yarns have a smoother, less hairy appearance.
    The selected linear density (= titer) of the fibers and filaments used for the fabric depends on the intended application. It is usually in the usual range for such textile applications. The linear density depends on the yarn spinning process used for the yarn. During the preparation processes prior to spinning, the Modal FR fiber, the high temperature resistant polymer fiber and the standard flammable synthetic fibers are mixed together in the required ratio. The yarn of the present invention is an intimate blend of the three fibers, with each of the fibers thoroughly thoroughly dispersed in the final yarn. This mixing can be done during the opening of the fibers, during the calendering or during the stretching of the sliver.
    The mixing ratio of the game of the invention is in a particularly preferred embodiment of the invention at 70% modal FR, 15% high temperature resistant polymer fibers and 12
    REPLACED PL0505 15% synthetic standard fibers.
    Antistatic properties of the fabric can be achieved by adding 1 to 5% staple antistatic fibers to blend or by creating an antistatic screen by using yarns made by twisting the base yarn with antistatic endi-filament yarns.
    The percentage of para-aramid fiber in the yarn can be up to 30%. However, as the para-aramid content increases, the cost of the fabric increases without appreciably improving its properties against the relevant standards. One or more of the individual fiber components of the fabric are jet-dyed, flake-dyed, or comb-dye dyed or can be dyed in the yarn or fabric. The high temperature resistant polymer fibers can either be dyed or flocked or comb dye dyed. The use of 100% jet-dyed fibers improves the color fastness of the fabric while reducing the cost of dyeing the fabric.
    The fabric weight, structure and weave of the woven fabric are selected so that the style and properties of the fabric are within the scope. The fabric structure may, for. As a plain weave, a body, Panama, satin or satin or any other tissue weave, which is suitable for the protective clothing. With knitwear a single jersey, pique or any other suitable fabric construction is possible. The fabric for shirts may be lightweight (eg, weighing from 100 to 150 g / m2 per unit area) and made with a plain weave. For pants, the fabric may be intermediate in weight (eg 150 to 230 g / m2 per unit area) and made with a body weave. For jackets and other types of outerwear, it may also be heavy (eg, weighing between 230 and 350 g / m2 per unit area) and made with a body weave. The basic principle of the invention can be applied to a variety of materials. It will work regardless of the weave or fabric construction, provided the correct yarn blends and arrangements are used.
    POSSIBLE 13 • · PL0505
    Only very light fabrics (lighter than 100 g / m 2) would not have the advantages of the invention.
    The material according to the invention can also be produced by using a nonwovens production process. Even if no yarn is obviously needed in a nonwoven fabric process, all the statements made above regarding the type, properties and treatment of the yarn fibers and the mixing ratios also apply to the composition of such nonwovens. The fiber components are mixed and processed into a nonwoven fabric without the yarn 10 being spun first. An example of such a substance is a
    Needle felt fabric, in which the individual fiber components are mixed in a mixing device and then kadiert, crossed and needled to give a substance. Such substances may, for. B. be used as insulating in a garment or for the production of simple 15 garments, such. As aprons, are used.
    Use of the invention
    The product of the present invention is intended to be used as one of the main components of personal protective apparel in situations where there is a risk of coming into contact with flames, arcs and liquid metal splashes 20. The fabric is used to make garments that cover the wearer's body to protect the skin from contact with flames or other heat sources, such as skin. B. metal splashes - with the exception of alumina - and arc to protect, which could cause injury. Twenty-five garments are usually made by sewing tailored pieces together. The product of the present invention may be both the sole fabric of which a garment is made and a component of the garment; the fabrics of the other components may be of a different pattern and may have a different purpose. The fabric can also be combined with other fabrics by laminating it before the fabric is cut for the garment.
    REPLACED 14 PL0505. &Quot; * :: ..: • · · - > ..... ** * # * «* *« · * · · · 1 * 4 # «4 * e ea
    The product of the present invention may be used as a fabric layer on the inside of a garment. It can be used as a layer on the outside of a garment or as an internal component between two or more fabrics. It can also be used in more than one layer for the garment. It could be z. B. are used as the inner layer of the garment and as the outer layer of the garment with a third layer in the form of a flame-resistant intermediate layer between the inner and outer layer.
    The fabric according to the invention can be used for the production of all types of garments, which serve primarily to protect against flames. Its use is for jackets, coats, trousers, shirts, polos, sweaters and pullovers, sweatshirts, T-shirts, socks, aprons, gloves and protective gloves, headgear, other headgear and any kind of garments that protect the wearer from flames and the like To protect dangers, possible. The fabric may also be used in other articles intended to protect persons and objects from contact with flames, such as: Shoe and boot components, welder bulkheads, fire curtains, tents, sleeping bags, tarpaulins and other similar items made wholly or partly of fabric,
    Colored fabrics for the intended applications are preferably obtained by using spun-dyed fibers or by piece dyeing or printing. In general, however, all dyeing methods are applicable.
    example 1
    A fabric in bodily weave was woven from the following components: • Yarn: One Nm 45/2 worsted whose 70% of its fibers are 3.3 dtex Lenzing FR® (1/3 with a staple length of 75 mm and 2/3 with a Staple length of 90 mm) and 15% of 1.7 dtex para-aramid with a staple length of 100 mm and 15% of high-strength PA6. Lenzing FR® is a Modal FR fiber available from Lenzing AG, Austria. It is produced in a modal process (see AT-A 1371/2009) and contains 15
    FOLLOWING • t • · PL0505 ...... ..:; · · · · ··· »Μ ,, ..
    Exolith® as incorporated FR pigment. The three fiber components were mixed together during stretching of the sliver during the preparation process.
    The warp density of the fabric was 30 threads per cm. The 5 weft density was 26 threads per cm.
    The resulting fabric had a mass of 250 g / m2 per unit area.
    Flame retardants:
    The resulting fabric could not be ignited under normal weather conditions. In the case of direct contact with flames on the surface of the fabric, the material charred, but retained its structure and continued to protect it from flames. There were no holes in the fabric. The fabric remained soft and flexible after contact with flames in accordance with EN ISO 15025 Method A (Surface Flaming) 15, without breaking it in any way. Furthermore, heat shrinkage was not observed upon direct contact with flames on the surface of the fabric and throughout the 10 second flame time.
    Afterflame and afterglow of the fabric during the test 20 according to EN ISO 15025 method A both in the warp direction and in the weft direction 0 seconds.
    Protective clothing - jackets and pants - was made from the fabric and rated as follows.
    Test with a sensor-equipped manikin 25 in accordance with ISO 13506.3: Protective clothing against heat and flames - Test procedure for complete clothing - Prediction of the likelihood of burns using a sensor-equipped manikin. This test method determines the characteristics of the heat protection represented by the clothing; this is done by measuring the heat transfer to a life-size dummy exposed to a laboratory-simulated flash flame with controlled heat flow density, duration and flame spread
    POSSIBLE 16 «« • • »« • PL0505 * * * * «* *. * * # * ♦ * * * ·« »· · · · lt · ** ·« «t« «·. The heat transfer readings can also be used to calculate the expected skin burns from exposure. Garments made of the fabric of the present invention were compared to garments of pure aramid fabric (100%) (Tables 1 and 2).
    Table 1 - Burning probability
    Combustion degree / total burnings {%): 1. 2. 3. Substance of the invention: 7 16.7 0.9 pure aramid (100%): 5.3 18.4 10.5
    Table 2 - Resizing after contact with flames:
    Location: (Shrink%) Fabric of the Invention Pure Aramid (100%) Length Jacket +3.6 -8 Wide Jacket +2.0 -2.0 Upper Arm Jacket -10.9 k. A. * length arm +2.1 -5.0 length pants -1.2 -16.7 leg pants -7.9 k. A. * k. ΑΛ the garment < was too brittle for a rating after exposure to the flames
    The apparel made from the fabric of the invention exhibited far fewer burns compared to pure aramid apparel (100%). After exposure to flames, the dummy's garments were pulled out to measure the size and shrinkage of the garment. Parts of the garments made of pure aramid (100%) - like the upper arm of the jacket and the leg of the pants - were too brittle for a measurement. The substance according to the invention remained intact in one piece. No serious damage was observed. The fabric stayed flexible and did not break. Surprisingly, the fabric according to the invention does not shrink during contact with the flames. In fact, the opposite is true - certain parts of the garment became larger. The pure aramid clothing (100%) showed significant shrinkage due to flame contact. REPLACED | 17 PL0505 * · ΦΦ ΦΦ · 4 »Φ Φ« · · 4 · · «Φ · * • I · Φ φ 9 * Φ ·« 14 «ΦΦ • - · Φ Φ # Μ Φ Φ Φ Φ Φ Φ * < 44 # β Φ Φ Φ ΦΦ * 4
    It can be clearly seen from the visual evaluation of the test clothing that the clothing made from the fabric according to the invention forms a kind of additional protection on contact with flames.
    Protection against metal spraying ·:
    The substance according to the invention was tested in accordance with ISO 9185 and the classification according to EN ISO 11612. Despite its relatively low weight of 260 g / m2, the fabric achieved the highest level of protection to be achieved: E3. By comparison, a typical material already used as protection against ferrous metal spatters has a product weight of 400 g / m2 and only has protection level E1.
    This test assesses the ability of the substance to withstand a certain amount of molten metal and how the metal interacts with the substance. The materials with the best properties retain their structure and the metal does not adhere to the surface. The damage to the fabric is minimized.
    arc protection:
    The substance according to the invention was tested in accordance with EN ISO IEC 61482 1-2, 4 kA and 7 kA. The fabric passed the required Stoll criteria for 4 kA with excellent values and showed no breakup of the fabric in a single layer in the 7 kA test. The Stoll curve is a curve of heat energy and time, which is compiled from data on the compatibility of human tissue with respect to heat and used to determine the occurrence of second-degree burns (cited in EN ISO IEC 61482 1-2).
    Testing the mechanical properties:
    Compared to some other products currently used for personal protective apparel, the tensile test conducted in accordance with ISO 13937-2 resulted in the following results as shown in Table 3.
    Table 3 - Results of the properties of the substance
    Fabric Weight Zipper- 1 Rip- Heat- Short-term Dye- Strength Strength Continuity- Waterfastness Subsequent 18
    Fabric (g / m2) of the weft chain coefficient Alambeta vapor absorption (Fi) fabric according to the invention 260 75 74 170 10,0 5 modacrylic / cotton 260 25 25 126 4,3 FR-treated cotton 340 28 29 139 9, 1 3 aramid 260 51 49 109 2.3 3-4
    The fabric according to the invention has a higher tensile strength than most other materials on the market.
    Examination of wearing comfort: results according to Table 3
    Alambeta - Thermal transmittance coefficient:
    The fabric has been tested for its wearing comfort properties. The Alambeta method measures the rate of passage of body heat through the fabric. Fabrics with a high heat transfer coefficient feel cooler and can therefore be worn more comfortably. With regard to the results from Table 3, the substance according to the invention has the highest heat transfer coefficient and thus feels the coolest.
    Short-term water vapor absorption Fi:
    The substance has been tested for short-term water vapor absorption (Fi) by applying the model for human skin according to EN ISO 31092. High water vapor absorption capacity indicates that the substance is able to transfer moisture well in its environment. This keeps the body dry and cool. With regard to the results from Table 3, the substance of the invention has the highest short-term water vapor absorption and thus the best wearing comfort.
    This can contribute to avoiding the risk of heat stress and heat stroke and improves the physiological properties of the wearer.
    FAILURE 19 • • • • • • • • •
    PL0505
    Color fastness test:
    By using 100% spun-dyed fibers or high-quality dyeing methods, high color fastness can be achieved because the colors never wash or fade. 5 Example 2
    The inventive substance from Example 1 was subjectively evaluated and compared with other commercially available fabrics for personal protective clothing. The results are shown in Table 4 in the last column. In this table the scores are given 1-3, 10 where 1 = bad, 3 = excellent.
    For each parameter evaluated, the fabric of Example 1 received the highest score. No other substance achieved a comparably high evaluation level.
    POSSIBLE • PL0505 * * * • ·
    Table 4 - Properties of conventional personal protective clothing Substances in comparison to Example 1
    Cotton FR Cotton FR / PA Poly FR / Cotton MAC / Cotton MAC / Cotton / Aramid MAC / Lyocell / Aramid Pure Meta-Aramid (100%) Meta-Aramid / Para-Aramid ce LL 15 Ό O S ΐ ε iS 4 > 5 Modal FR / para-aramid / nylon (Ex. 2) Protection Inherent FR 1 1 1 2 2 2 3 3 3 3 Breakaway behavior 1 1 1 2 2 2 1 2 3 3 Insulation 2 2 2 2 2 2 3 3 2 3 Arc protection 2 2 2 2 2 2 1 1 2 3 Metal splash guard Iron 1 1 1 1 1 1 1 1 1 3 Mechanical durability: " Ί Tear resistance 1 2 1 2 2 3 3 I 3 3 Pilling 2 2 2 1 1 2 2 2 3 3 Abrasive properties J_L * 2 1 1 1 3 3 3 3 Physiological properties: Thermal properties 1 2 j 2 2 2 2 2 1 1 3 3 Comfort 2 2 2 1 1 1 2 2 3 3 Comfort: Moisture absorption 1 3 3 3 I 2 2 | 2 1 1 2 3 Cool Touch 1 1 1 1 2 2 1 3 2 3 Workability Can be piece-dyed 3 3 3 2 2 2 1 1 2 3 Colorfast 1 1 1 1 2 2 1 3 2 3 Color palette 3 3 3 3 3 2 1 1 2 3 Fabric can be printed 3 3 3 2 2 2 1 1 2 3 Washing performance Stable wash 1 1 2 1 2 2 3 3 3 3 Low shrinkage during 1 1 washing 1 2 2 2 3 3 3 3 3 Environment / Sustainability ÖKOTEX Standard 100 1 1 1 1 1 1 2 2 I 2 3 Sustainability 1 1 1 1 1 1 1 1 2 3 Affordability J 3 3 3 2 2 2 1 1 2 3 MAC = Modacrylic 21
    SUBSEQUENT
    权利要求:
    Claims (15)
    [1]
    ♦ · PL0505 Requirements 1. Flame retardant (FR) fabric for use in personal protective clothing which provides high protection against hazards caused by flames or other sources of heat, such as: Molten metal spatter and arc, characterized in that it is made of an intimate blend of FR cellulosic fibers with high temperature resistant polymer fibers and standard synthetic fibers.
    [2]
    A fabric according to claim 1, wherein the intimate blend is in the form of a yarn.
    [3]
    A fabric according to claim 2, wherein the blend ratio of the yarn is preferably - between 65 and 90% FR cellulose fibers, between 10 and 20% high temperature resistant polymer fibers, and between 10 and 20% standard flammable synthetic fibers.
    [4]
    A fabric according to claim 2, wherein the blend ratio of the yarn is preferably - between 65 and 75% FR cellulose fibers, between 12.5 and 17.5% high temperature resistant polymer fibers, and between 12.5 and 17.5% standard synthetic flammable fibers. POSSIBLE PLQ505
    [5]
    A fabric according to claim 2, wherein the FR cellulose fibers of the yarn are staple fibers having a staple length of between 75 and 90 mm.
    [6]
    A fabric according to claim 2 wherein the FR cellulose fibers of the yarn are cellulosic fibers rendered flame resistant during or after fiber production by the addition of an FR active ingredient.
    [7]
    A fabric according to claim 2, wherein the FR cellulose fibers of the yarn are selected from the group consisting of Modal FR, Viscose FR and Lyocell FR.
    [8]
    A fabric according to claim 7, wherein the FR cellulose fibers of the yarn are Modal FR fibers.
    [9]
    A fabric according to claim 7, wherein the FR cellulose fibers of the game may be a blend of different FR cellulose fibers selected from the group consisting of Modal FR, Viscose FR and Lyocell FR.
    [10]
    A fabric according to claim 2, wherein the high temperature resistant polymer fibers are selected from the group consisting of para-aramid, meta-aramid, aromatic polyester (PES), polybenzimidazole (PBI) and blends of these fibers.
    [11]
    A fabric according to claim 2, wherein said standard flammable synthetic fibers are selected from the group consisting of polyamide, / 6 (PA6), polyamide 6.6 (PA6.6) and polyester (PES) fibers.
    [12]
    A fabric according to claim 2 which has been rendered antistatic to the blend by the addition of 1% to 5% antistatic staple fiber.
    [13]
    A fabric according to claim 2, which has been rendered antistatic by including a grid pattern of yarns consisting of the base yarn twisted with continuous filament antistatic filament yarns. 23 later) 5 PL0505 • * • · «·
    [14]
    14. A fabric according to claim 2, wherein one or more individual fiber components have been jet-dyed or flake-dyed staple fibers or have been combed, gam- or fabric-dyed.
    [15]
    15. A fabric according to claims 1 to 14, which was produced by weaving, knitting or a nonwovens production process. Lenzing AG, PL0505 AT (amended) Claims 1. Flame-resistant substance for use in the field of personal protective clothing, which provides high protection against hazards caused by flames or other heat sources, such. B. molten metal spatter and arc, characterized in that it consists of an intimate blend of FR-Zellulosefasem with high temperature resistant polymer fibers selected from the group consisting of para-aramid, meta-aramid, aromatic PES, PBI and mixtures of these fibers, and synthetic Standard fibers is made. 2. A fabric according to claim t, wherein the intimate mixture is in the form of a yarn. The fabric of claim 2, wherein the blend ratio of the yarn is preferably between 65 and 90% FR cellulosic fibers, between 10 and 20% high temperature resistant polymer fibers, and between 10 and 20% flammable synthetic standard fibers. A fabric according to claim 2, wherein the blend ratio of the yarn is preferably - between 65 and 75% FR cellulose fibers, between 12.5 and 17.5% high temperature resistant polymer fibers and between 12.5 and 17.5% standard synthetic flammable fibers , A fabric according to claim 2, wherein the FR cellulose fibers of the yarn are staple fibers having a staple length of between 75 and 90 mm. A fabric according to claim 2 wherein the FR cellulose fibers of the yarn are cellulosic fibers rendered flame resistant during or after fiber production by the addition of an FR active ingredient. 1 REPLACED

    Lenzing AG, PL0505 AT 7. A fabric according to claim 2, wherein the FR cellulose fibers of the yarn are selected from the group consisting of Modal FR, Viscose FR and Lyocell FR. 8. A fabric according to claim 7 wherein the FR cellulose fibers of the yarn are Modal FR fibers. A fabric according to claim 7, wherein the FR cellulose fibers of the yarn may be a blend of different FR cellulose fibers selected from the group consisting of Modal FR, Viscose FR and Lyocell FR. A fabric according to claim 2, wherein the standard flammable synthetic fibers are selected from the group consisting of PA6, PA6.6 and PES fibers. A fabric according to claim 2 which has been rendered antistatic to the blend by the addition of 1% to 5% antistatic staple fiber. A fabric according to claim 2, which has been rendered antistatic by including a grid pattern of yarns consisting of the base yarn twisted with continuous filament antistatic filament yarns. 13. A fabric according to claim 2, wherein one or more individual fiber components have been dyed or a flake-colored staple fiber or combzug-, yarn or fabric dyed. 14. A fabric according to claims 1 to 14, which was produced by weaving, knitting or a nonwovens production process. 2 REPLACED
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    同族专利:
    公开号 | 公开日
    EP2643508A1|2013-10-02|
    AT511288B1|2013-01-15|
    KR20130131382A|2013-12-03|
    US20130267140A1|2013-10-10|
    CN103221595A|2013-07-24|
    WO2012068600A1|2012-05-31|
    TW201237229A|2012-09-16|
    EP2643508B1|2015-01-07|
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    法律状态:
    2021-07-15| MM01| Lapse because of not paying annual fees|Effective date: 20201124 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA1953/2010A|AT511288B1|2010-11-24|2010-11-24|Flame resistant fabric for protective clothing|ATA1953/2010A| AT511288B1|2010-11-24|2010-11-24|Flame resistant fabric for protective clothing|
    CN201180056705XA| CN103221595A|2010-11-24|2011-11-07|Flame resistant fabric for protective clothing|
    PCT/AT2011/000448| WO2012068600A1|2010-11-24|2011-11-07|Flame resistant fabric for protective clothing|
    US13/989,108| US20130267140A1|2010-11-24|2011-11-07|Flame resistant fabric for protective clothing|
    EP20110793645| EP2643508B1|2010-11-24|2011-11-07|Flame resistant fabric for protective clothing|
    KR1020137016229A| KR20130131382A|2010-11-24|2011-11-07|Flame resistant fabric for protective clothing|
    TW100140938A| TW201237229A|2010-11-24|2011-11-09|Flame resistant fabric for protective clothing|
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