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Method for Producing a Flame-Resistant Textile Article

a textile article and flame-resistant technology, applied in the field of flame-resistant textile articles, can solve the problems of increasing the risk of burn injuries of garment wearers, the fabric or the garment may not sufficiently protect against very intensive heat or longer-duration flash fire, and the fabric will become heavy and stiff, and achieve the effect of high phosphorous conten

Inactive Publication Date: 2019-05-23
TEN CATE PROTECT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent describes a method for treating textile articles with different flame retardant compounds that bind to the textile using different chemical and physical bonds. The treatment results in synergistic effects, making the flame-resistant textile article more durable. The method can be applied to fabrics made of different materials and weights, with heavier fabrics having better comfort. Overall, this method improves the flame retardant properties of textile articles with better durability.

Problems solved by technology

When the cellulose ignites during this process, the resultant exotherm that occurs prior to self-extinguishment may cause significantly increased burn injuries for garment wearers.
Proban® treated fabrics or garments can exotherm which means that these fabrics or garments may not sufficiently protect against very intensive heat or longer-duration flash fires, e.g. flash fires that last for 3 seconds or longer at 2.0 cal / cm2 / sec heat flux.
However, due to the multiple treatments there is the risk that the fabric will become heavy and stiff, losing even more tensile and tear strength compared to a single treatment.
In addition it is not possible to sufficiently improve the exotherm behaviour using multiple Proban® treatments.
A downside of such a process is that the strength of the fibre deteriorates with the inclusion of solid particulates.
A disadvantage of above described cellulose-reactive treatment is that the phosphorous comprising molecules may detach from the cellulose-containing textile article which leads to a reduction of the flame-resistant properties.
As a result of this, treated textile articles have a limited shelf life.
However, the need to wash articles that are not used is very inconvenient.
Furthermore it is known that the reaction between the cellulose and the phosphonopropionamide tends to weaken the cellulose fibres and thereby also weakens the textile article comprising said fibre.
This weakening of the cellulose fibres can cause the fabric to lose up to 50% tearing strength and up to 20% tensile strength.
In addition there is a maximum to the amount of phosphorous that can be grafted onto the cellulose as suitable reaction sites are limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0051]A flame-resistant fabric was woven from a fibre blend comprising 64% Lenzing FR®—which is a Rayon fibre that has been made flame retardant by a non-cellulose-reactive treatment -, 24% aramid, 10% polyamide, 2% antistatic fibre to a twill construction at approximately 180 g / m2. The same type of yarns was used in both directions (warp and weft). Subsequently the fabric was printed with a 100% coverage standard camouflage pattern composed of 7 colours. After the fabric was printed, a cellulose-reactive, phosphorous-containing, flame-retardant compound was applied to the fabric. This compound was applied by impregnating the fabric with an aqueous solution comprising Pyrovatex® CP LF, Knittex® MLF NEW, Phosphoric acid 85% and Invadin® PBN according to the concentrations as indicated in the top half of Table 1. After the flame-retardant treatment liquid had sufficiently penetrated the fabric, the fabric was squeezed at a predetermined squeezing rate, pre-dried, and heat-treated by c...

example 2

[0055]The experiment of Example 1 was repeated on a fabric woven to a plain ripstop construction at approximately 210 g / m2. The yarns used to produce the fabric and the treatment received by the samples are identical to Example 1. Said fabric was tested for relevant properties. Results of these tests are presented in Table 3. All washes referred to in Table 3 are performed using ISO 6330 using detergent 6 from Annex N and tumble drying. If not specifically indicated, the fabric was not washed.

TABLE 3Flame protection and physical properties.ComparativeRec-Rec-Rec-Test methodexample 2ipe 1ipe 2ipe 3After-flameISO 15025 B,3 / 00 / 00 / 00 / 0time warp ×4 secondsweft, secflame exposureAfter-flameISO 15025 B,9 / 20 / 00 / 00 / 0time warp ×4 secondsweft, secflame exposure(washed 5×)Phosphorous1.82.92.32.1content(wt %)Phosphorous1.82.42.22.0content(wt %)(washed 5×)LOIISO 4598-227—28—TensileISO 13934-1981101710221045strength(warp), NElongation at14141414break, %TensileISO 13934-1950937937893strength(warp),...

example 3

[0057]Flame-resistant fabric was woven to a twill construction at approximately 180 g / m2. The same type of yarns were used in both directions (warp and weft), for which the fibre blend comprised 64% Lenzing FR® which is a Rayon fibre that has been made frame retardant by a non-cellulose-reactive treatment, 24% aramid, 10% polyamide, 2% antistatic fibre. The fabric was printed with a 100% coverage standard camouflage pattern composed of 7 colours. After the fabric was printed a cellulose-reactive, phosphorous-containing, flame-retardant compound was applied to the fabric according to the conditions given in Table 4: (1) in combination with a standard finish with the fluorocarbon (in one step) or (2) before a standard finish with the fluorocarbon had been carried out.

TABLE 4Application of a flame-retardant treatment incombination with a fluorocarbon finish (recipe1) or as a separate process step (recipe 2).Comparativeexample 3Recipe 1Recipe 2Process step 1: Cellulose-reactive flame-re...

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Abstract

Method for making a cellulose-comprising, flame-resistant, textile article comprising multiple flame-retardant treatments. The method comprises: a. providing at least part of the textile article with a non-cellulose-reactive, phosphorous-containing, flame-retardant compound, and b. providing at least part of the textile article with a cellulose-reactive, phosphorous-containing, flame-retardant compound. The method is suitable for producing flame-resistant, textile articles such as flame-resistant garments. Said garments can be used to protect individuals from flames and / or heat.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a method for making a textile article flame-resistant as well as to textile articles obtained by said method. The method comprises providing at least part of the textile article with a non-cellulose-reactive, phosphorous-containing, flame-retardant compound and also providing at least part of the article with a cellulose-reactive, phosphorous-containing, flame-retardant compound.BACKGROUND OF THE INVENTION[0002]Numerous professions require individuals to risk exposure to extreme heat and / or flames. Typical examples are industrial workers, fire fighters, police and military personnel. Such personnel are, wherever possible, provided with appropriate flame-protective garments. These garments are distinctly different from normal, every-day-use garments as they are at least partly constructed from flame-resistant textiles.[0003]Said garments must pass minimum thermal performance requirements such as flame- and / or heat-resistanc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D06M13/288D06M11/69D06M23/08D01G99/00A41D31/00
CPCD06M13/288D06M11/69D06M23/08D01G99/005A41D31/0022D06M2101/06D06M2200/30D10B2201/20D10B2501/00A62B17/003D04B1/16D03D1/0035D10B2331/02D10B2331/021D10B2401/16D10B2507/00A41D31/08D06M2400/01D06P1/004D06P1/0096D03D15/533D03D15/47D03D15/513D03D15/292
Inventor TOPALOVIC JOCIC, TATJANASTANHOPE, MICHAEL T.
Owner TEN CATE PROTECT
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