JPS6359475A - Fire retardant polyester cloth - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a polyester fabric with excellent flame retardancy, and particularly to a flame-retardant polyester fabric suitable for blackout curtains and curtains.

(Prior Art) Various attempts have been made to use polyester fibers dyed black with carbon black in fields where light-shielding properties are required, such as blackout curtains and curtains.

On the other hand, instead of dyeing with carbon black as an undiluted solution, polyester fibers dyed with black dye have also been used.

(Problem to be solved by the invention) However, polyester fibers containing carbon black do not have sufficient flame retardancy even when treated with flame retardants, so until now they have hardly been used in the fields of blackout curtains, curtains, etc. It had not been used.

In addition, polyester fibers dyed with black dye tend to discolor when subjected to anti-dyeing or flame retardant treatment, making it difficult to obtain high-quality products, poor light resistance, and cost. It had the disadvantage of being expensive.

An object of the present invention is to solve the problems of the prior art and to provide a polyester fabric with good flame retardancy and suitable for blackout curtains, curtains, etc.

(Means for Solving the Problems) In order to achieve the above object, the present invention, as a result of extensive studies, has been developed to provide a sand-inch pattern on both sides of a cationic dyeable polyester fiber layer dyed black with regular polyester fiber layers. It was discovered that a multilayered fabric with a sandwiched structure can be used, and the present invention was achieved.

That is, the present invention provides a multilayer fabric whose interior is made of cationic dyeable polyester fibers and both sides are made of regular polyester fibers, the cationic dyeable polyester fibers are dyed black, and the entire fabric is treated with a flame retardant. It is a flame-retardant polyester fabric characterized by the fact that

In the present invention, a typical example of the polyester fiber dyeable with cationic dyes is a polyester fiber containing ethylene terephthalate as a main repeating unit and a sulfonate group in the form of a metal salt in the main chain. Isophthalic acid copolymerized polyethylene terephthalate fibers are exemplified.

On the other hand, regular polyester fibers are polyester fibers that can be dyed with disperse dyes but cannot be dyed with cationic dyes, and contain terephthalic acid as the main acid component and at least one type of glycol, preferably ethylene glycol, trimethylene glycol, tetra The main target is polyester fibers whose primary glycol component is at least one alkylene glycol selected from methylene glycol.

It may also be a polyester fiber in which part of the terephthalic acid component is replaced with another difunctional carboxylic acid component, or a polyester fiber in which part of the glycol component is replaced with the above-mentioned glycol other than the main component or another diol component. It may also be fiber.

In the present invention, it is necessary to sandwich the cationic dye-dyeable polyester fiber layer and to configure both sides thereof with regular polyester fibers.

Examples of such fabrics include multi-woven and knitted fabrics in which cationic dye-dyeable polyester fibers are arranged, and particularly preferred are 5-ply satin weave, 8-ply satin weave, and the like.

Cation dyeable polyester fibers and regular polyester fibers can be used in any form, including spun yarns, processed yarns, and specially processed designed yarns, but especially preferred results are obtained when they are used as processed yarns.

The composition ratio of the cationic dye-dyable polyester fiber in the fabric of the present invention is preferably 20 to 70%, particularly 35 to 70%.
55% is preferred. If the composition ratio of the cationic dye-dyeable polyester fiber is too high, it will be difficult to obtain sufficient flame retardancy, and if the ratio is too low, the light-shielding property will tend to be insufficient.

In the flame-retardant polyester fabric of the present invention, the cationic dye-dyable polyester fibers arranged inside the fabric are dyed black with a cationic dye, and the entire fabric is treated with a flame retardant. The black dyeing and flame retardant treatment may be carried out on the raw yarn, raw cotton, or yarn before being made into a fabric, or may be carried out after being made into a fabric.

As flame retardants, it is possible to use those conventionally used as flame retardants for polyester fibers, such as organic phosphorus/halogen compounds and nitrogen-containing organic phosphorus compounds, but especially those that are solid at room temperature such as hexabromocyclododecane. The use of halogenated cycloalkane compounds allows flame retardant treatment to be applied at the same time as anti-dying, which is convenient and reduces costs. In this case, the halogenated cycloalkane compound is used in the form of a suspension with an average particle size of less than 1 μm, mixed with the dye liquor. Furthermore, the multilayer fabric made of cationic dye-dyable polyester fibers and regular polyester fibers can be dyed with a dye solution containing a disperse dye as well as a cationic dye for black dyeing and a flame retardant, and treated with a flame retardant. In this case, the inner cationic dye-dyeable polyester fiber is dyed black, and the outer regular polyester fiber is dyed with a disperse dye in any desired color. Therefore, it is advantageous in the field of curtains, which require design and aesthetics as well as sufficient light-shielding properties.

(Example) The present invention will be explained below with reference to Examples.

In the examples, the flame retardant performance test was determined by the 45° micro burner method and the coil method according to the fire retardant test method of the Fire Service Act, and the light shielding property was determined by pasting a sample fabric on one side of a dark box. The cloth was irradiated with light so that the surface illuminance was 10,000 lux, and the illuminance on the back side of the cloth in a dark box was measured and expressed as the illuminance value (lux).

Example Commercially available polyethylene terephthalate (regular polyester) woolly processed yarn 150 denier/48 filaments was used for the warp (warp density 170 threads/inch), 5
- Polyethylene terephthalate (cationic dyeable polyester) copolymerized with 3 mol% of sodium sulfoisophthalate (300 denier/48 filament woolly processed thread (weft density: 70 threads/inch) was used for the weft), woven on a water-jet loom on both sides. A multi-N fabric with a sheet satin structure (the interior is composed of cationic dyeable polyester fibers and both outer surfaces are composed of regular polyester fibers) was woven.

Next, after scouring and centrifuging this fabric, it was dyed using the following dyeing and flame retardant treatment solution at 130°C using a jet dyeing machine.
Stained for 0 minutes.

Cationic dye (BLACK R-1!D) 2.2
%0. F, disperse dye (ORANGE ll5R)
Q, 18% o, w, f flame retardant (hexabromocyclododecane) 13% 0. A, f Leveling agent (Sunsolt) 1 g/l As a result, the inner cationic dye-dyable polyester fiber was dyed black, and the regular polyester fibers on both outer surfaces were dyed beige. This dyed fabric was dried, set at 180° C., and flame retardant performance and light blocking performance were evaluated. The results are shown in the table below, and it was found to have excellent flame retardancy and light shielding properties. In addition, the exterior was beige and had good design and aesthetics.

On the other hand, for comparison, polyethylene terephthalate fiber dyed black by adding 2.5% by weight of carbon black was used instead of the cationic dyeable polyester fiber, and the other conditions were the same as in the above example. The experiment was repeated using the same method (no cationic dye was used in the dye solution). The results are shown in the table below, and the flame retardance was poor.

(This page, hereafter in the margins) (Effects of the invention) According to the present invention, it is possible to easily exceed the flame retardant standards of 9, which conventional carbon black dyed polyester fibers could not pass, and moreover, it has excellent light-shielding properties. This makes it possible to apply it to the field of blackout curtains, which require a high degree of flame retardancy.

Furthermore, cationic dyeable polyester fibers and regular polyester fibers can be piece-dyed in one bath, and flame retardant treatment can be performed at the same time, so manufacturing costs can be significantly reduced.

Furthermore, since the surface portion of the fabric can be dyed in a color different from the black interior, it is possible to provide a flame-retardant fabric with excellent aesthetics and design.

Claims (1)

[Scope of Claims] 1. A multilayer fabric composed of cationic dye-dyable polyester fibers inside and regular polyester fibers on both sides, the cationic dye-dyable polyester fibers being dyed black, and having an overall color that is difficult to dye. A flame-retardant polyester fabric characterized by being treated with a flame agent. 2. The composition ratio of cationic dyeable polyester fiber is 2.
The flame retardant polyester fabric according to claim 1, which has a content of 0 to 70%. 3. The flame-retardant polyester fabric according to claim 1 or 2, wherein the flame retardant is a halogenated cycloalkane compound.