JPH03837A - Sheet for aircraft seat - Google Patents

Abstract

PURPOSE:To obtain a lightweight sheet for aircraft seats, having flame and heat resistance and rich in air permeability and flexibility by forming a cloth of a two-layered structure from a flame retardant woolen cloth having a specific cover factor and a cloth composed of blended yarn of p-oriented aromatic polyamide fiber and flameproof fiber. CONSTITUTION:A cloth of a two-layered structure, produced by using flame retardant woolen fiber in the front fabric layer and, on the other hand, blend yarn composed of p-oriented aromatic polyamide fiber and flame retardant fiber in the lining fabric layer, weaving the fiber and yarn so as to provide 20-70% cover factor of the front fabric layer and usable as a sheet for aircraft seats.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an aircraft seat.

[Conventional technology]

Conventionally, aircraft seats have been made of an outer material, an inner polyurethane foam, and a fire blocking layer (hereinafter referred to as F) that is placed between them and used to wrap around the foam.
BL). As FBL, flame-resistant and heat-resistant fiber fabrics coated with metal or silicone or Teflon coatings have been proposed, but although they have flame-resistant properties, they lack breathability and flexibility, and are not comfortable enough to be used as a seat. It lacked functionality.

[Problem to be solved by the invention]

The present invention provides a surface material that also serves as an FBL.In other words, it has sufficient flame resistance even if the conventional FBL is omitted, and improves breathability and flexibility, which are the drawbacks of the conventional FBL, and can be used as a seat material. The present invention provides an aircraft seat with excellent required comfort.

[Means to solve the problem]

The present invention is a two-layer woven fabric, one layer of which is made of flame-retardant wool fiber and has a cover factor of 20 to 70%.
The other layer is an aircraft seat sheet made of a blended yarn of para-oriented aromatic polyamide fibers and flame-resistant fibers.

Hereinafter, the structural aspects of the two-layer structure fabric according to the present invention will be explained in detail.

As mentioned above, the two-layer structure fabric of the present invention basically has a two-layer structure, and one layer of the fabric uses flame-retardant wool fiber yarn, and has a cover factor (KC) of 20 to 20. It is necessary that the weaving satisfies 70%. Here, the cover factor (KC) is the outer weight (A) and the lining weight (B) of the flame-retardant wool fiber yarn.
It is displayed as KC=A/A+B.

In the present invention, when weaving flame-retardant wool fiber yarn for both the warp and weft yarns on the outer surface of the two-layer structure fabric, the KC is 20%.
In the following, a large amount of other layers is exposed on the outer material after weaving, and the weave pattern becomes disordered, resulting in a product with markedly inferior marketability.

Furthermore, during weaving, the warp tension between the outer fabric and the lining tends to become uneven, making weaving very difficult.

Therefore, KC is 20% or more, more preferably 30%.
% or more.

On the other hand, the lining layer combined with the outer layer is a blended yarn of para-oriented aromatic polyamide fibers and flame-resistant fibers, comprising 10-90% by weight of para-oriented aromatic polyamide fibers and 90-10% by weight of flame-resistant fibers. It is woven using blended yarn. A yarn that is a blend of these two types of fibers in the above ratio is used, but in this case, if the ratio of para-oriented aromatic polyamide fibers exceeds 90%, the flame resistance will decrease, and it will harden and easily become punctured. The flame reaches the urethane foam of
The purpose of the invention would not be achieved. On the other hand, if the proportion of para-oriented aromatic fibers does not reach 10%, the fibers will be substantially composed of flame-resistant fibers, the yarn strength will decrease, and it will be difficult to weave a two-layer structure fabric. Furthermore, the wear resistance is significantly reduced and the dimensional stability such as mold (misalignment) becomes poor.

The two-layered fabric of the present invention is characterized by the fact that even when flame comes into direct contact with the fabric surface, the flame-retardant wool fibers that make up the outer fabric are only carbonized and no shrinkage occurs as a whole, and the blended yarn that makes up the lining is
Combination of para-oriented aromatic polyamide fibers and flame-resistant fibers can further improve flame resistance and heat resistance. In addition, heat can be easily diffused, eliminating the phenomenon of holes caused by concentration of heat in one point, making it impossible for flames to reach the urethane foam inside.

As described above, the double-structured fabric of the present invention is composed of a flame-retardant wool fiber yarn on the outer layer and a blended yarn of para-oriented aromatic polyamide fiber and flame-resistant fiber as the other layer. The seat sheet can be obtained with excellent flame resistance that also functions as FBL, and has functions such as breathability, flexibility, and comfort.

〔Example〕

Examples of the present invention will be shown below.

Example 1 The outer layer is 2/3 made of flame-retardant wool fiber that has been dyed and processed with Zabro.
6 meter count thread is used for warp and weft, and the backing layer is a 2734 meter count blended yarn of para-oriented aromatic polyamide fiber (Kevlar ■) and flame resistant fiber (Rustan ■) at a ratio of 25% by weight (25% by weight). is used, and the density is
A double-structured fabric with a cover factor (KC) of 45% for the outer layer, warp, weft, 28 lines, 7 inches, -twill, and wave layer was woven and a combustion test was conducted. The results are shown in Table 1. The two-layer structure fabric of the present invention passed the flame retardant standards as an aircraft seat, and the surface texture design could be freely designed, thus achieving the object of the present invention.

Example 2 The yarn types of the outer layer and lining layer were the same as those shown in Example 1 above, the weave density of the outer layer was 17 threads/inch in warp and weft, and the cover factor (KC) of the corrugated layer was 20. A test weaving of a two-layer fabric consisting of 20% was conducted for a combustion test. The results are shown in Table 1. Although this passes the flame retardancy standards and achieves the object of the present invention, the density of the surface layer inevitably becomes coarse, so that the blended yarn in the back layer becomes conspicuous.

Example 3 In Example 1, the cover factor (KC) is 70.
% was all the same as in Example 1. The results are shown in Table 1.

Comparative Example 1 The lining layer was made of a blended yarn of meta-aramid fiber and flame-resistant fiber with a count of 2,734 meters at a ratio of 25% by weight to 5% by weight.
A flame retardant test was conducted on a double-layered fabric with the same cover factor (KC) as in Example 1. The results are shown in Table 1. That is, the flame caused shrinkage and pitting, and the flame reached the urethane foam inside, resulting in a failure in both weight loss rate and self-extinguishing properties.

Comparative Example 2 A woven fabric with a warp and weft of 30 yarns/inch was made using a blend of para-oriented aromatic polyamide fibers and flame-resistant fibers at a ratio of 25% by weight and 2734 meter count, and an inorganic filler was added to this. 90 g/cm” of silicone resin,
Table 1 shows the combustion test results for the 0.3 m/m thick coating.

Next, regarding the combustion test method, see Example 112.3 above.
A seat was made using the sample of Comparative Example 1.2, and the weight of the seat was determined by applying the following combustion test method using a large oil burner based on the new flame resistance standards for aircraft seats published by the Federal Aviation Administration of the United States. The reduction rate and combustion condition were measured. The results are shown in Table 1.

Weight reduction rate (%)〉 Indicated by

Acceptance Criteria The acceptance criteria is a weight loss of 10% or less and self-digestion.

Table 1 [Effects of the Invention] The double-structured fabric of the present invention is composed of a flame-retardant wool fiber yarn on the outer layer and a blended yarn of para-oriented aromatic polyamide fibers and flame-resistant fibers on the other layer. ■Since it is flame resistant and heat resistant, and also serves as an FBL, it can be lightweight. ■
Excellent breathability and flexibility. ■The outer material is made of flame-retardant wool fiber that is easy to dye and will not be affected by the color of the lining. ■It is easy to process, such as attaching the seat, and is inexpensive because it does not use FBL, making it ideal as an airline seat that also has FBL.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a two-layer fabric according to the present invention. 1... Two-layer structure fabric, 2... Outer layer (flame-retardant wool fiber yarn), 3... Lining layer (mixed yarn of para-oriented aromatic fiber and flame-resistant fiber) 11! '1 Figure patent applicant Asahi Kasei Industries, Ltd.

Claims (1)

[Claims] It is a two-layer structure fabric, one layer is woven with flame-retardant wool fiber with a cover factor of 20-70%, and the other layer is woven with a blended yarn of para-oriented aromatic polyamide fiber and flame-resistant fiber. Aircraft seat.