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Flame retardant fiber blends comprising flame retardant cellulosic fibers and fabrics and garments made therefrom

A flame-retardant cellulose and flame-retardant fabric technology, applied in the field of flame-retardant fiber blends containing flame-retardant cellulose fibers and fabrics and clothing made from them, can solve the problems of durability and thermal performance degradation

Inactive Publication Date: 2006-09-06
EI DU PONT DE NEMOURS & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such blends often result in reduced durability and thermal performance

Method used

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A comfortable and durable fabric is prepared from warp and weft yarns containing NOMEX  Type 462 intimate blend of staple, flame retardant (FR) rayon staple and nylon staple, the weft comprising an intimate blend of FR rayon staple and nylon staple. NOMEX  Type 462 is 93% by weight polym-phenylene isophthalamide (MPD-I) staple fiber, 5% by weight polyparaphenylene terephthalamide (PPD-T) staple fiber and 2% by weight carbon - Core Nylon-Sheath Static Dissipative Staple Fiber (Type P-140, available from E.I. DuPont de Nemours of Wilmington, Delaware). FR rayon is a cellulosic fiber containing a flame retardant compound, and nylon is polyhexamethylene adipamide. Prepare 40% by weight of NOMEX  Type 462 staple fiber, FR rayon staple fiber of 45 weight percent and nylon staple fiber of 15 weight percent are cotton blended yarn sliver, and by means of ordinary cotton spinning system, using ring spinning machine, processed to have Spun yarn with a twist coefficient of ...

Embodiment 2

[0045] A comfortable and durable fabric is produced according to Example 1, however the warp is made of 20 weight percent NOMEX  Type 462 staple fiber, 55 weight percent FR rayon staple fiber and 25 weight percent nylon staple fiber, the spun yarn has a twist coefficient of 3.7. The yarn thus produced was a 24.6 tex (24 inch cotton count) single yarn. The two single yarns are then plied on a plying machine to make a double-ply yarn. A single yarn was produced using a process similar to Example 1 and with the same degree of twist, containing 20 weight percent NOMEX  A blend of Type 462 staple fibers and 80 weight percent FR rayon staple fibers having a linear density of 32.8 tex (18 inch cotton count). Two of these yarns are then plied to form a plied yarn.

[0046] In the shuttle loom, in the 3×1 twill structure, NOMEX / FR rayon / nylon yarn and NOMEX  / FR rayon is used as warp and weft. The raw twill fabric has a structure of 26 ends x 17 picks / cm (66 ends x 44 picks / i...

Embodiment 3

[0049] The fabric was made according to Example 1, however both warp and weft were made of 50 weight percent NOMEX  Type 462 chopped fibers, 35 weight percent VISIL  Staple fiber and 15 weight percent nylon staple fiber, the spun yarn had a twist coefficient of 3.7. The yarn thus produced was a 24.6 tex (24 inch cotton count) single yarn. Two of these yarns are then plied on a plying machine to make a two-ply yarn. Using the same fiber composition, process and twist coefficient, a single yarn of 32.8 tex (18 inch cotton count) was produced. Two of these yarns are then plied to form a plied yarn.

[0050] In shuttle looms, in 3×1 twill construction, NOMEX  / VISIL  / Nylon yarn is used as warp and weft. The raw twill fabric has a structure of 23 ends x 16 picks / cm (58 ends x 40 picks / inch) and a basis weight of 247.5 g / m 2 (7.3oz / yd 2 ). The green twill fabric produced above was rinsed in hot water and dried under low tension. The rinsed fabric is then dyed with an...

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Abstract

An intimate blend of staple fibers has from (10) to (75) parts by weight of at least one aramid staple fiber, from (15) to (80) parts by weight of at least one flame retardant cellulosic staple fiber, and from (5) to (30) parts by weight of at least one polyamide staple fiber. The intimate blend of staple fibers provides yarns and fabrics that are flame retardant, also referred to as fire resistant, and can be used to make flame retardant articles, such as clothing. The flame retardant fabrics may have a basis weight from 0.13 - 0.50 kg / m squared (4 to 15 ounces per square yard).

Description

Background technique [0001] There is a continuing need for flame-resistant, also known as fire-resistant, fabrics that can be used in the manufacture of clothing suitable for persons working near flames, high temperatures, or arc flashes. In addition to having excellent thermal properties, an effective flame retardant fabric should be durable, comfortable, and should be able to be produced at low cost. While fabrics made from fibers that are inherently flame resistant have been well suited for use in protective apparel, certain characteristics of these fibers are problematic. For example, these fibers can be difficult to dye, have an uncomfortable weave, and are expensive. To address these issues, fibers that are inherently flame resistant have been blended with fibers made from other materials. Fiber blends can be used to produce purpose fabrics that combine the beneficial characteristics of each of the constituent fibers. However, such blends often result in reduced durab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D02G3/44D02G3/04D03D15/12D04H1/42
CPCD02G3/047D10B2331/021D10B2201/00D04H1/42D03D15/12D02G3/443D10B2331/02D04H1/425D04H1/4334D04H1/4342Y10T428/2904Y10T428/2915Y10T442/3065Y10T442/3976D03D15/513D04H1/43828D04H1/43835D02G3/04D02G3/44
Inventor 朱瑞瑶D·古克尔特S·L·罗瓦西克R·帕里
Owner EI DU PONT DE NEMOURS & CO
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