TW201435166A - Non-fibrillating flame resistant cellulosic fabric, its use and method for producing the same - Google Patents

Abstract

This invention relates to a flame resistant fabric made from or including FR lyocell produced by resin finishing the fabric characterized by a resin content on the FR lyocell fibres which is higher than obtainable by known resination methods.

Description

Non-fibrillated flame resistant cellulosic fabric, use thereof and method of manufacture

The present invention relates to a flame resistant fabric made of FR lyocell or comprising FR lyon manufactured by processing a fabric by resin, characterized in that the resin content on the FR rayon fiber is higher than It is available by a known resin finishing method.

Textile materials vary greatly in their ability to withstand flames and thus protect the underlying materials. Most fabrics made from natural fibers and synthetic fibers burn when exposed to fire. The rate of burning and ease of ignition are primarily dependent on the chemical nature of the polymer used to make the fiber and the fabric construction. Many polymers such as cellulose, polyester and nylon will burn easily. The heavier the fabric, the lower the burning rate. Wool is the most common natural fiber with some degree of flame resistance. Heavy weight wool fabrics are not easily burned and have long been used in fire fighting clothing.

The fabric can be rendered flame resistant by applying suitable chemicals to the fabric. The first FR treated fabric uses inorganic salts such as aluminum hydroxide, antimony trioxide And borate to make the cotton fabric resistant to burning. These are effective but not washable.

The organic phosphorus-containing compound which is reacted onto the cotton by grafting or network formation is more durable and widely used. The two leading brand names are Proban® and Pyrovatex®. Although these finishing agents are durable, they can be removed by harsh chemical treatment, and as the number of cleaning cycles increases, the amount of finishing agent decreases. The application of the finishing agent has a poor hardening effect on the fabric. Cotton fabrics that have been processed by flame retardants are being used in a variety of applications where the fabric is not ignited. When exposed to a flame, this type of fabric will not burn, but will burn and become extremely brittle and can crack open to expose the wearer's skin or other underlying material to the hazardous material.

The first flame resistant cellulose rayon manufactured is manufactured by a slime procedure. The high viscosity liquid flame resistant additive is dispersed in the spinning solution prior to extruding the fiber. The liquid is captured in the cellulose in the form of very small bubbles by physical means. The result is effective as a flame resistant fiber, but the additive can be removed by repeated washing. The strength of the fiber decreases proportionally with the amount of additive included. The additive was withdrawn from the market due to safety considerations and the manufacture of the fiber was interrupted.

Improved flame resistant mucilage fibers can be made by using a solid pigment flame retardant. This type of fiber will be referred to as FR mucus fiber. The pigment is finely ground and mixed with the spinning solution prior to extruding the fiber. The result is a dispersion of the insoluble particulate additive in the fiber. The strength of the fiber decreases proportionally with the amount of additive included. All of the cellulose in the fiber contains some of the additive and the additive cannot be removed by washing or general fabric dyeing or finishing procedures. Therefore, the result of the procedure It is an inherently flame resistant fiber. A known fiber of this type is Visil®, which contains a vermiculite pigment flame retardant.

Additional improvements can be achieved by combining the solid pigment flame retardant in a spinning solution used to make modal fibers. The Modal procedure is a modified slime fiber procedure designed to produce fibers having a higher strength and a higher wet modulus than conventional mucus fibers. The resulting fiber containing the flame retardant pigment is inherently flame resistant. It is a fabric that is stronger than the fiber produced by the slime fiber process and that has a higher strength and better stability. This type of fiber will be referred to as FR Modal fiber, but it is noted that the properties of the fiber do not conform to the BISFA definition of Modal fiber. The proven flame retardant pigments for fibers of this type are organophosphorus compounds and the preferred pigment is Exolit® (2'-oxybis[5,5-dimethyl-1,3,2-dioxaphosphorus) Dioxaphosphorinan] 2,2' disulfide).

FR Modal fibers are typically blended with other flame resistant fibers to produce a fabric having a combination of properties of the fibers in terms of strength and physical properties, aesthetics, comfort and physiological impact on the wearer. FR Modal fibers are used in very little in 100% applications in some applications in the field of clothing such as metallized fabrics or fabrics that are a mixture of two or more yarns. Compared to other products, its own performance is not appropriate in many ways.

The newly introduced man-made cellulose fiber is Lace. He is manufactured by a solvent spinning process. The solvent is a non-toxic amine oxide. A cellulose slurry in a mixture of amine oxide and water is prepared. Water is removed from the slurry by evaporation, and as the water content decreases, the cellulose dissolves in the amine oxide, resulting in a solution of a viscous liquid above 80 °C. The solution passes through the hole of the spinning disc Being squeezed into a water bath. The solvent is diluted with water and the cellulose precipitates to form fibers. In the remainder of the procedure, the fibers are washed to remove any amine oxide solvent, cut into staple fibers, finished with a lubricant and an antistatic agent, and then dried.

The amine oxide solvent is recycled in the closed circuit of the plant. A recovery rate greater than 99.5% is achieved. The recovery of this additive indicates that the program has a very low environmental impact. This is also necessary for the economics of the program.

Lace is far stronger than mucoid and is stronger than cotton in wet and dry conditions. He is used in clothes, home furnishings, work clothes and non-woven fabrics. More than 90% of the world's Lace manufactures are manufactured by Lenzing AG under the trademark TENCEL®.

The superior properties of Lace make it possible to produce a variant containing a combined flame retardant and which will have superior properties to FR mucoid fibers and FR modal fibers. For the purposes of the present invention, this variation will be referred to as FR Lace. FR Lace will be able to make a blend fabric that has superior properties over current fabrics and will also be able to produce 100% FR Lace fabrics with enhanced comfort and physiological impact over existing fabrics. FR Lace is the subject of patent application WO 2012/083318.

FR Lace fibers as described in WO 2012/083318 are made using a flame retardant, which is a solid concentrate prepared from the reactants used in the Proban procedure. The concentrate is finely ground into particles of about 1 mm and then mixed into a liquid solution of a mucilage fiber for producing the filament fibers during its preparation. In the dried, finished fiber, each particle of the flame retardant is completely surrounded by cellulose. In general textile processing And in use, he cannot be removed from the fiber because it is insoluble and trapped within the fiber.

For those who have made fabrics by Lace in the textile industry, it is well known that there is a need to make a difference during processing to prevent or control the fibrillation of the fibers on the surface of the fabric. Fibrillation is a phenomenon in which individual fibers on the surface of a fabric split to form fibrils that are parallel to the fiber axis and that are often adhered to the fibers at one end. Fibrillation is often caused by wet abrasion of the fabric surface or fibers protruding from the surface of the fabric during processing of the textile or during washing of the fabric. Fibrillation on the surface of the fabric is due to fiber wear at the most exposed point on the fabric. This causes cracking of the cellulose crystallites in the fibers on or below the surface. Further abrasion strips the fibrils of the cellulose from the body of the fiber while one of the ends of the fibril remains attached to the fiber. The fibrillation of the fibers protruding from the surface of the fabric is caused by mechanical action and abrasion and causes the free ends of the fibers to be fibrillated.

Typically, the wire has a diameter of 12 microns. The fibrils produced by the procedure are typically 1 micron in diameter. Since the surface area is greatly increased when fibrillation occurs, the amount of spectral reflection from the surface of the fabric increases regardless of where fibrillation occurs. The fabric is clearly whiter; the color is soft. The fabric surface tends to have a different appearance depending on the degree of mechanical action accepted by each segment. In the case where the fabric is creped during processing, the amount of fibrillation is increased to obtain a white line on the surface of the fabric.

Fibrillation may be a good effect in clothing textiles as long as they are carried out under controlled conditions and stabilized before the fabric is used. It can be used to create a peach-like touch on the fabric. In this case, by The fibers protruding from the surface of the fabric are removed prior to the occurrence of fibrillation or during the procedure. There are several ways to remove the fibers of these raised surfaces, including singeing of the fabric, enzymatic treatment of the fabric using cellulase enzymes, and surface fibers by chemical treatment followed by mechanical action. Embrittlement.

However, in many applications, the surface of the fabric is extremely clean. This can be achieved in a Lace fabric by crosslinking the cellulose in the fiber. Crosslinking increases the bonding between the cellulose molecules in the fiber and prevents the fibrils from being formed by the above-described peeling effect even if the fiber surface has been damaged by wet abrasion. Crosslinking can be carried out during the manufacture of the fibers or can be carried out by processing the fabric with a resin finish. Some reactive dyes have polyfunctionality and thus when used to dye the fabric, the cellulose molecules can be crosslinked and thus fibrillated.

Examples of crosslinked filaments during manufacture are Tencel A 100® and Tencel LF®, both manufactured by Lenzing AG. An example of a crosslinking resin designed to be used on a fabric is dimethylol dihydroxyethylidene urea, which is sold, for example, under the name of the Fixapret CPL manufactured by BASF AG.

The crosslinking resin is applied to the fabric in the form of a preconcentrate of a mixed catalyst and a softener. In a conventional procedure (dry curing procedure), the fabric is dried and then heated to about 180 ° C and the pre-concentrate reacts with the cellulose molecules in the fiber. Each molecule of the preconcentrate is combined with more than one reaction site on the cellulose molecule, resulting in a bridge between adjacent cellulose molecules. The reaction begins and accelerates by the presence of the acid catalyst. The curing time is generally 30 to 60 seconds.

The fibers in the properly crosslinked fabric will not be fibrillated. The surface of the fibers and fabric will remain free of fibrils. The fabric will not show any surface whitening or softening of the color. He will have a completely smooth touch without the peach-like touch. Fabrics used for protective clothing and similar applications are generally expected to have these characteristics.

There are many different ways in which the crosslinking resin is reacted on the cellulosic fabric, which differs in the temperature and time required, the amount of resin applied to the fabric, the catalyst used, and the type and amount of softener used. In a procedure (the wet curing procedure), after the pre-concentrate mixture is applied to the fabric, the fabric is not dried and allowed to cure at room temperature for 24 hours or longer.

There is no attempt to crosslink the FR Lace fabric by using conventional resin application and curing methods to prevent fibrillation during processing and washing. The surface of the fabric piloses and turns white. A white line appears on the surface. Microscopic examination revealed that the fabric surface had a different broad fibrillation between the sections. This fibrillation increases as the fabric is washed.

problem

If FR Lace fibers are to be used in protective clothing and similar applications in which the fabric made of the fibers is used to make washed laundry, it is necessary to confirm the formation of fibrillation which prevents or controls the surface of the fabric. Way.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a non-fibrilated FR fiber which is suitable for use in protective clothing and the like and which is washable in industrial washing and which has superior resistance to highly aggressive washing conditions and a method for producing the same. The flame resistant fabric produced by FR Lace or comprising Lace and processed by resin finishing is characterized in that at least 1.5% by weight of the resin content on the FR Lace fiber is based on the cellulose content. . This type of fabric will have broader utility in the field of upholstery, upholstery, children's pajamas, and any other field where protective fabric users need to be protected or exposed to fire.

For the purposes of the present invention, the term "fiber" always includes staple fibers and continuous filaments in any suitable application.

In a preferred embodiment, the fabric can be a woven fabric. In another preferred embodiment, the fabric may be a knitted fabric produced by any method including flat bed knitting, circular knitting, warp knitting, or any other knitting method. In another preferred embodiment, the fabric may be any of a needle seam, hydroentangled, including an airlaid, wet-laid, spunlaid, carded or airlaid web. Non-woven fabrics made from fibers can be used or any other method of making non-woven fabrics. Spinning or continuous filament yarns made in whole or in part from FR Lace or any other fiber type may be included in the nonwoven fabric or may form an important part of the fabric.

In the flame resistant fabric according to the present invention, the FR silk may be combined with one or more other textile fibers selected from the group consisting of other FR fibers (such as meta-aromatic polyamines, para-aramids, and vice- Acrylonitrile fiber, PBI, FR Modal, FR slime and any other FR fiber) and / or with other non-FR fibers (including cotton, wool, silk, linen, non-FR Lace, Modal, mucin, nylon, polyacrylonitrile) Fiber and polyester) blended. Of course, each blend must be tested to ensure that it produces a fabric with the flammability properties required for the desired application.

Therefore, the product of the present invention is a fabric made entirely of FR Lace or containing a part of FR Lace, which can be processed to its finished state without fibrillation of the surface, and which can be used To make a garment that can be washed without fibrillation.

Fibers, long fibers, yarns, fabrics or garments made using the above-described solution to the fibrillation problem are included in the invention of this patent.

The FR additive used to make FR Lace as described in WO 2012/083318 is an oxidized concentrate of a tetrahydroxyalkyl phosphonium salt with ammonia and/or a nitrogen-containing compound containing one or more amine groups. Surprisingly, it has been found that by reducing or neutralizing the basicity of the FR additive, the crosslinking of the FR silk fibers or long fibers can be significantly improved to the extent required for the above purposes.

The invention has been found to have several specific specific examples:

1) rinsing the fabric in an acid bath before applying the crosslinking resin; therefore, a preferred embodiment of the present invention includes a method of finishing a flame-retardant fabric made of FR Lace or comprising FR Lace by resin finishing It is characterized in that the fabric is washed with an acid bath before being processed by the resin. In a particularly preferred embodiment, the acid bath contains from 0.1 grams per liter to 2.0 grams per liter of acetic acid in water.

2) increasing the amount of catalyst in the solution applied to the fabric to a level wherein the catalyst is active even if some of the catalyst is combined with the FR additive; therefore, another preferred embodiment of the invention Examples include a method of processing a flame resistant fabric made of FR Lace or comprising FR Lace by resin finishing, characterized in that the catalyst concentration in a solution applied to the fabric is increased to be recommended by the resin manufacturer. It is generally 1.2 to 5 times the level of use. In a particularly preferred embodiment, the catalyst is magnesium chloride hexahydrate at a concentration of 15 to 50 grams per liter.

3) including a buffering agent in a solution applied to the fabric; therefore, another preferred embodiment of the present invention includes a method of finishing a flame-retardant fabric made of FR Lace or comprising FR Lace by resin finishing, It is characterized by the addition of an acid buffering component to the acid bath applied to the fabric. In a particularly preferred embodiment, the acid buffer component is citric acid and the resulting dry uncured fabric has a pH below 6.

Anyone familiar with chemistry and textiles will clearly understand that any method of reducing or neutralizing the basicity of the FR additive will achieve the same results as the three methods listed. All methods of achieving this result are covered by this patent.

Treatment with an acid bath (also known as acid rinsing) can be conveniently carried out in a cross-dyeing machine. The machine can be used to wash the fabric and remove the gum of the fabric prior to rinsing the fabric with the pickling agent. The standard treatment used was to rinse at 40 ° C for 10 minutes with 1 g / liter of 60% acetic acid solution. The effect of this treatment on 100% Tencel Lace fabric is to reduce the pH of the fabric to 8.1 (textile-only and fabric-removed fabrics) after the acid rinse 5.63. The effect of this treatment on 100% Tencel FR Lace fabric was such that the pH of the fabric was reduced to 4.78 by 8.1 (textile-only and fabric-removed fabric) after the acid cleaning.

Typically, when the fabric is washed with an acid as described above, it is then washed with water to remove any excess acid from the fabric before being dried. If FR Lace was used, it was found that drying the fabric without water washing obtained better results in preventing the acid catalyst passivation during the resin finishing process. This is because the removal of the acid from the fabric returns the FR additive to its alkaline state and subsequently passivates the acid catalyst during the resin finishing process.

Increasing the amount of catalyst in the resin finishing process can also be used as a means of overcoming the acid passivation caused by the FR additive. The catalyst used in the resin finishing process is generally Lewis acid. This catalyst is magnesium chloride. When he is heated to the temperature at which the resin is cured during the resin finishing process, it decomposes to produce hydrochloric acid, which is a chemical that catalyzes the crosslinking reaction. The amount of hydrochloric acid produced is proportional to the amount of magnesium chloride in the fabric. The amount of hydrochloric acid produced is also increased by increasing the amount of magnesium chloride added to the resin-finished formulation. At the right level, a sufficient amount of hydrochloric acid will be produced such that when some of the hydrochloric acid is passivated by the FR additive, there is still sufficient amount to effectively catalyze the crosslinking reaction. It should be noted that too much excess of magnesium chloride can cause degradation of the cellulose in the fiber and should therefore be avoided.

A third method of overcoming the passivation of the catalyst for resin finishing by the FR additive is to add a buffer system to the solution applied to the fabric. The pH of the solution is in the range of the entire acid or base addition. Hold at the desired level. If an acidic buffer such as citric acid or acetic acid is added to the applied solution and the fabric is dried, it will maintain an acidic pH until the fabric is heated during curing of the resin. Thus the acid produced by the catalyst will not be passivated by the FR additive, but will be used to catalyze the crosslinking reaction.

The choice of a method for preventing passivation of the catalyst requires consideration of the economics, the design of the equipment used to apply and cure the resin finishing agent, the availability of such chemicals, and the aesthetics and physical properties of the fabric being manufactured. Sexual influence. Skilled fabricators will be able to experiment with selected measures on a small scale to ensure that the desired results are obtained.

The third method is directed to achieving the object of the patent, that is, to prevent the catalyst from being passivated by the FR additive, so that the fabric can be crosslinked during the resin finishing process. Any other method of achieving the same goal is also within the scope of this patent.

The procedure for making the products of the present invention includes the step of crosslinking the cellulose in the FR Lace fibers to prevent fibrillation during use and washing. The overall procedure for converting the FR Lace fibers into a finished fabric that can be processed can include many other steps before and after processing with the resin. Any combination of general textile procedures, including the prevention of acid catalyst passivation used in resin finishing processes, is also the subject of this patent. The crosslinking of the cellulose is preferably carried out on the fabric, but it may also be carried out on the fibers, yarns or long-fiber yarns before the fabric is produced.

Garments made from the fabric are also products of the invention. The products of the present invention can also be used to make all that is worn when accidentally exposed to flames Form of clothing. He can be used in jackets, jackets, trousers, boiler overalls, gowns, shirts, sweaters and pullovers, sweatshirts, T-shirts, children's sleepwear, adult pajamas, socks, aprons, gloves and long gloves, head hoods, Other hats and any other clothing that may be worn when exposed to flames or other sources of ignition.

Other articles made from the fabric are also products of the invention. It includes items that may be accidentally exposed to flames or other sources of ignition such as shoes and shoe parts, welding covers, fire curtains, tents, sleeping bags, tarpaulins, filters, liners, coated substrates, wipes, cleaning Cloth, disposable or short-life cloth, fillers and barrier layers for upholstered furniture, and any other similar or integral parts made of fabric.

Accordingly, the present invention contemplates the use of such fabrics in the manufacture of articles that may be accidentally exposed to flames or other sources of ignition. Such items may be garments that may be worn when exposed to flames or other sources of ignition, such as jackets, outerwear, pants, boiler overalls, gowns, shirts, sweaters and pullovers, sweatshirts, T-shirts, children's sleepwear, and adults. Pajamas, socks, aprons, gloves and long gloves, hoods for heads, other hats and any other clothing worn in accidental exposure to flames or other sources of ignition, as well as shoe and shoe parts, welding covers, fire curtains, Tent, upholstery, lining, home decoration (including sleeping bag, tarpaulin, filter, lining, coated substrate, wipe, cleaning cloth, disposable or short-life cloth), for lining The padding and barrier layers of the furniture of the mat and any other similar or integral parts made of fabric.

The invention will now be illustrated by way of example. These examples never limit this The scope of the invention.

Example 1 (comparative sample)

The 1/30 s Ne yarn is made from FR Lace fibers manufactured as described in the patent application WO 2012/083318. The yarn was woven to obtain a fabric having a 2 x 1 twill configuration of 200 gsm weight. The yarn has been previously dyed with an anthraquinone dye.

The fabric was then dyed at 75% pressure in the following materials: 40 g/l Knittex FEL (modified DMDHEU resin from Huntsman), 12 g/l magnesium chloride hexahydrate, 30 g Perisoft GS (polyoxygenated microemulsion from Dr Petry), Kileral JET (2 liter/liter of wetting agent from BASF). Then, the fabric was dried at 120 ° C with a spreader, and then the resin was cured on the expander at 170 ° C for 45 seconds. The fabric was then washed 5 times in a domestic washing machine at 60 ° C using the machine manufacturer's recommendations. The washed fabric is rolled and dried in a household tumble dryer.

Then, the surface appearance of the fabric was examined. The surface of the fabric shows clear signs of irregular white spots or whitening on the entire surface. An uncontrolled fibrillated fabric is not commercially viable.

Example 2

The 200 gsm weight 2 x 1 twill fabric of the same starting fabric as used in Example 1 was woven from pre-dyed yarn.

The fabric produced was processed on a roll dyeing machine as follows: the fabric was treated with 1 gram per liter of acetic acid (60%) at 40 ° C for 10 minutes or at least in the dyeing machine operating two or two cycles. The fabric was not rinsed and dried on a spreader. The fabric was dyed at 75% pressure in the following materials: 40 g/l Knittex FEL (modified DMDHEU resin from Huntsman), 12 g/l magnesium chloride hexahydrate, 30 g/l Perisoft GS (polyoxygenated microemulsion from Dr Petry), Kileral JET (a wetting agent from BASF) at 2 g/l. Then, the fabric was dried at 120 ° C with a spreader, and then the resin was cured on the expander at 170 ° C for 45 seconds. The fabric was then washed 25 times in a domestic washing machine at 60 ° C using the machine manufacturer's recommendations. The fabric was inspected after every 5 wash cycles. The washed fabric is rolled and dried in a household tumble dryer.

Then, the surface appearance of the fabric was examined. The surface of the fabric shows clear signs of irregular white spots or irregular whitening on the entire surface. This type of white spot clearly indicates the fibrillation of the fiber on the surface of the fabric. An uncontrolled fibrillated fabric is not commercially viable.

During this cleaning procedure, the fabric had a bright, clear appearance at each inspection and showed no white spots or whitening. This shows that the fibers in the fabric have not been fibrillated during the 25 wash cycles and have the cleaning performance required for commercial use.

Example 3

The fabric produced in the above Example 1 was wetted as described in detail below. Cross-linking technology for finishing: The fabric was dyed at a pressure of 80% in the following materials: 250 g/l Fiscalaprel CPN (DMDHEU from BASF), 50 ml/l sulfuric acid (98%) A pH below 1 is obtained. The wet fabric was rolled, placed on an A frame and covered in polyethylene, sealed and slowly rotated at room temperature for 22 hours. The fabric is then removed and cleaned using the following sequence of cleaning solutions: cold water, 10 g/l soda ash at 50 ° C, 2 g/l soda ash, 2 g/l woven detergent at 50 ° C. , 60 ° C hot water, cold water. The fabric is finally dried on the expander. The fabric was washed 25 times as described in Example 2. He was inspected after every 5 washes. The washed fabric is rolled and dried.

During this cleaning procedure, the fabric had a bright, clear appearance at each inspection and showed no white spots or whitening. This shows that the fibers in the fabric have not been fibrillated during the 25 wash cycles and have the cleaning performance required for commercial use.

Claims (12)

A flame resistant fabric made of FR lyocell or comprising FR lyon manufactured by processing a fabric by resin, characterized in that the resin content on the FR rayon fiber is based on the cellulose content It is at least 1.5% by weight of resin. The flame resistant fabric of claim 1, wherein the fabric is a woven fabric. The flame resistant fabric of claim 1, wherein the fabric is a knitted fabric produced by any method including flat bed knitting, circular knitting, warp knitting, or any other knitting method. A flame resistant fabric as claimed in claim 1 wherein the fabric is hydroentangled by means of a web comprising airlaid, wet-laid, spunlaid, carded or airlaid webs. Any method of making or non-woven fabrics made by any other method of making non-woven fabrics. The flame resistant fabric of claim 1, wherein the FR fiber is blended with one or more other textile fibers selected from the group consisting of: meta-polyaromatic polyamines, para-aromatics Polyamide, para-acrylonitrile fiber, PBI, cotton, wool, silk, linen, FR modal, FR slime fiber, non-FR wire, modal fiber, slime fiber, nylon, polyacrylonitrile fiber and poly ester. A method of processing a flame resistant fabric made of or comprising FR silk fibers by resin finishing, characterized in that the fabric is washed with an acid bath before being processed by a resin. The method of claim 6, wherein the acid bath is 0.1 g / liter in water to 2.0 g / liter of acetic acid. A method for finishing a flame resistant fabric made of or comprising FR rayon fibers by resin finishing, characterized in that the concentration of the catalyst in the applied resin solution is increased to the general use recommended by the resin manufacturer The level is 1.2 to 5 times. The method of claim 8, wherein the catalyst is magnesium chloride hexahydrate at a concentration of 15 to 50 g/l. A method of processing a flame resistant fabric made of or comprising FR silk fibers by resin finishing, characterized in that an acid buffer component is added to a resin bath applied to the fabric. The method of claim 10, wherein the acid buffer component is citric acid and the resulting dried uncured fabric has a pH of less than 6. The use of a fabric as claimed in claims 1 to 5 or a fabric obtained by the method of claims 6 to 11 for the manufacture of articles which may be accidentally exposed to flames or other sources of ignition, such as Clothing worn in the event of accidental exposure to flames or other sources of ignition, such as jackets, jackets, trousers, boiler overalls, gowns, shirts, sweaters and pullovers, sweatshirts, T-shirts, children's sleepwear, adult pajamas, socks , aprons, gloves and long gloves, hoods for heads, other hats and any other clothing worn in the event of accidental exposure to flames or other sources of ignition, as well as shoes and shoe parts, welding covers, fire curtains, tents, Upholstery, home furnishings including curtains, sleeping bags, tarpaulins, filters, linings, coated substrates, wipes, cleaning cloths, disposable or short-life cloths, for cushioning The filler and barrier layer of the furniture and any other similar or integral parts made of fabric.