JPH09157994A - Antislipping woven fabric - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject woven fabric light in weight, excellent in strength, having a durable braking performance, and especially useful as a base fabric used for escape chutes for sheltering men from the fire of a building, etc., by specifying the whole fineness of synthetic filaments constituting woven fabric, the weaving density of the woven fabric, tensile strength and the static friction coefficient of a raised surface. SOLUTION: The whole fineness of synthetic filaments constituting woven fabric is at least 400 denier (preferably 400-1000 denier), and the weaving density of the woven fabric is 20-60 filaments/inch. The surface of the woven fabric is raised to give a static friction coefficient of 0.16-0.26. The tensile strength of the woven fabric in the longitudinal direction is increased to at least 150kgf e.g. by enhancing the density of the warp weaving in comparison with that of the weft weaving. The produced woven fabric is adequate in smoothness and braking performance, and enables an escaping man to slip in an escape chute in a good state without slipping out from the lower opening of the escape chute.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slip resistant woven fabric which is particularly suitable as a base fabric for a rescue bag.

[0002]

2. Description of the Related Art Heretofore, various proposals have been made for a rescue bag used when evacuating from a building due to a building fire or the like. For example, in order to improve the braking function when descending using a rescue bag, a tubular bag body that constitutes the body of the rescue bag is provided with an expandable and contractible portion, or a tubular bag body Many proposals have been made in which an inverted funnel-shaped narrowing portion is formed, and further, a funnel-shaped braking member is attached to a tubular bag body. However, in the case where these braking parts are specially provided, although the braking effect at the time of use is recognized, since the stress is particularly concentrated and applied to the braking part at the time of use, the strength of this part easily deteriorates, It was difficult to maintain a stable braking function, and the structure of the bag was inevitably complicated, so the manufacturing process was also complicated.

On the other hand, a slide-down base cloth for a rescue bag has been put into practical use, in which the surface of the bag body is roughened by fluffs without providing a braking portion having such a complicated structure, and the base for that purpose has been conventionally used. As the cloth, natural fiber staple fabrics and synthetic fiber staple fabrics using various spun yarns were used. However, these natural fiber and synthetic fiber fabrics are spun yarns made from natural short-fiber cotton or cotton that is cut from synthetic fiber tows to form a woven fabric. In order to secure it, it has to be a thick base fabric, and further, its production goes through many processes such as card process, drawing process, roving, spinning, etc., which makes it laborious and expensive. I had problems such as not getting it.

Further, in recent years, laws and regulations relating to fire fighting equipment and the like have been revised, and it has become necessary to improve the strength, durability, dimensional stability and other characteristics of rescue bags more than ever before.
It has become more difficult to deal with the fabrics.

[0005]

DISCLOSURE OF THE INVENTION The present invention provides a slip-resistant base cloth capable of solving the above-mentioned problems of the conventional rescue bag and rescue bag base cloth. That is, an object of the present invention is to provide an anti-slip base fabric for a rescue bag, which is inexpensive, lightweight, excellent in strength, capable of exerting a durable braking function, and having smoothness capable of efficiently evacuating. is there.

[0006]

Means for Solving the Problems The present inventors have found that the above problems of the present invention are: A raised fabric comprising synthetic fiber filaments having a total fineness of at least 400 denier, the fabric having a weave density of 2
0-60 pieces / inch, static friction coefficient of brushed surface 0.16-0.2
It consists of 6 structures and has a tensile strength of at least 1 in the longitudinal direction.
1. A non-slip fabric that is 50 kgf. 2. The non-slip fabric which is characterized in that the raised fabric of item 1 is a fabric for rescue bags. It was found for the first time that the napped woven fabric according to the above 1 or 2 can be achieved by a non-slip woven fabric characterized by being napped by using an emery napper equipped with a cloth polishing belt.

The present invention will be described in more detail below. The anti-slip fabric of the present invention comprises synthetic fibers. The synthetic fibers used in the present invention are preferably nylon, aromatic nylon, polyester, and vinylon, but other synthetic fibers may be used if necessary. The synthetic fiber in the present invention needs to be a filament. Further, the total fineness thereof needs to be at least 400 denier or more. With filaments having a denier of less than 400 denier, it becomes difficult to stably obtain the strength capable of achieving the object of the present invention. Further, in the present invention, it is particularly preferable that the total fineness is 400 to 1000 denier. Filaments above 1000 denier may be used if desired,
A woven fabric with a filament of more than 1000 denier is a warp that constitutes a base fabric when it is put into practical use as a base fabric for a rescue bag,
The unevenness at the intersection where the wefts intersect becomes large and becomes bulky. Therefore, at the time of creating the rescue bag, it becomes easier for the intersection to form a stiffer portion than necessary, and the weight of the entire body becomes too heavy, so that a storage space is required to be wider. , Preferably not used.

The woven fabric of the present invention has a weave density of 20.
It is necessary to make ~ 60 pieces / inch. This is because if the weaving density is less than 20 yarns / inch, it becomes difficult to obtain a woven fabric that maintains stable strength, which is one of the objects of the present invention. Also,
When the weaving density is more than 60 pieces / inch, the woven fabric becomes rigid, and it becomes difficult to fold or sew the base cloth when manufacturing the rescue bag.

Further, in the present invention, the warp density of the woven fabric may be equal to the weft density, but it is more preferable that the warp density is higher than the weft density. By doing so, in the present invention, it is possible to maintain the strength of the woven fabric after napping, regardless of whether the woven fabric is napped. The fabric according to the invention is raised on the fabric surface in order to obtain anti-slip properties.
In the present invention, the degree of raising is controlled by measuring the coefficient of static friction on the surface of the fabric. When the static friction coefficient of the woven fabric surface is 0.16 to 0.26, the present inventor combines the smoothness that can sufficiently exhibit the slip resistance as the base fabric for the rescue bag and can efficiently evacuate. Found to have. That is, the inventors of the present invention have a coefficient of static friction of 0.1.
In the case of a fabric with 6 ends, the slip resistance is reduced, and when it is put into practical use as a rescue bag, there is a risk that a downhill person will jump out of the opening under the rescue bag. They found that the surface became lacking in smoothness, and there is a possibility that the downhillers could not evacuate efficiently. A particularly preferred raised surface static friction coefficient of the fabric according to the invention is 0.1.
It is 8 to 0.24.

In order to achieve the above-mentioned object of the present invention, the woven fabric according to the present invention needs to have a tensile strength in the longitudinal direction of at least 150 kgf or more. Further, the basis weight of the woven fabric according to the present invention is preferably 100 to 300 g / m ² . Next, a method for raising a woven fabric according to the present invention will be described. In the present invention, the synthetic fiber filament woven fabric is subjected to a raising machine to fluff the surface of the woven fabric while adjusting the processing conditions. The raising process is repeated once to several times to obtain a raised product having a coefficient of static friction within the specified range. Also, the surface of the woven fabric may be only one side,
If necessary, both sides may be raised.

The method for raising the woven fabric obtained by the present invention is not particularly limited, and is appropriately selected from 1) thistle raising machine, 2) wire raising machine, 3) emery raising machine, etc., which are commonly used. It doesn't matter. However, it is preferable to use the emery raising machine because it is easier to finely control the raising degree. Particularly preferably used is an emery raising machine equipped with a cloth polishing belt. Also, for fine adjustment of the coefficient of static friction, softeners and hard finishes,
It is particularly preferable to carry out the finishing treatment with a texture improving agent such as colloidal silica in combination.

The static friction coefficient in the present invention is measured by the following method. That is, a static friction coefficient measuring machine (manufactured by Shinto Kagaku Co., Ltd., static friction coefficient measuring machine HEIDON-10 type) was mounted on a rising plate, a sample whose humidity was adjusted to 24 Hr or more in a thermostatic chamber of 20 ° C. × 65% RH, and a flat indenter was attached. (Weight 200g, surface tough ram treatment) is set, then the rising plate whose one end is fixed is lifted at a constant speed, the sliding angle of the flat indenter set on the pole is measured at n = 5, and the obtained measurement value is obtained. The static friction coefficient is calculated from

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described more specifically with reference to the following examples.

[0014]

Example 1 A polyester filament woven fabric (warp 750d / weft 750d, 44 warps / 35 wefts) was prepared and napped with emery paper No. 400. Five emery rolls, paper surface rotation speed 600 m / min, cloth speed 12 m / min, contact pressure 1.2 kg were passed twice to raise hair, and then oil agent, fiber waste, etc. were washed off with an open soaper, washed with water, dried, Heat set. The static friction coefficient of the brushed surface of the finished product was measured.

That is, a sample (wet 12 cm × length 30 cm) whose humidity has been adjusted to 24 Hr or more in a thermostatic chamber at 20 ° C. × 65% RH in advance is attached to the rising plate of the static friction coefficient measuring device with the raised surface facing upward. Next, the plane thickness (weight 200 g
Surface tough ram treatment, 75 cm x 35 cm) is set at the pole position. Ascending plate with one end fixed 10
When the temperature was raised at ° / 6 sec, the sliding start angle of the flat plate thickness was tan 12 ° and the coefficient of static friction was 0.21.

The tensile strength in the longitudinal direction of the obtained woven fabric is 17
The strength in the width direction of the fabric was 241 kgf. The fabric weight was 279 g / m ² . These are shown in Table 1.

[0017]

Example 2 The napped polyester filament fabric shown in Example 1 was then immersed in a 1% aqueous solution of Snowtex C (trade name, Nissan Chemical Industries, Ltd., colloidal silica), squeezed with a mangle and dried. . The static friction coefficient was measured and found to be 0.23. Further, the tensile strength and the basis weight were measured and are also shown in Table 1.

[0018]

[Comparative Example 1] The polyester filament greige fabric shown in Example 1 was scoured as it was with an open soaper, dried and heat set, and the static friction coefficient was measured and found to be 0.14. Even if the fabric according to this comparative example is used as a rescue bag, since the static friction coefficient is as low as 0.14, the function of braking the evacuees is insufficient, and the evacuees are required to use the opening below the rescue bag. There is a risk of jumping out.

[0019]

[Comparative Example 2] Polyester staple fabric (Warning ^# 7 count / weft ^#
The static friction coefficient of the greige machine that had been scoured, dried and heat set was 0.25. Fabric of this comparative example, since made of polyester staple fiber, for example, even though the basis weight is higher basis weight than 279 g / m ² which is the basis weight of Example 1 and 286 g / m ^2, textile lengthwise and widthwise direction It is clear that the tensile strength of No. 2 is inferior to that of the woven fabric of the present invention, and it is presumed that it is difficult to stably maintain the strength required for the rescue bag.

[0020]

Comparative Example 3 Using the same polyester filament woven fabric as in Example 1, a raising process was performed using No. 50 emery paper. Paper rotation speed 600m / min,
Raise the fabric twice at a cloth speed of 12 m / min, and then wash away the oil agent, sizing agent, fiber waste, etc. with an open soaper.
It was washed with water, dried and heat set. When the static friction coefficient of the finished product was measured, it was 0.28.

The fabric according to this comparative example has a static friction coefficient of 0.2.
When the bag is used as a rescue bag, there is a possibility that the evacuee cannot efficiently evacuate due to lack of smoothness of the inner surface of the bag with which the evacuee comes into contact. Further, the tensile strength in the lengthwise direction of the woven fabric was significantly inferior to that of Example 1 which is the woven fabric according to the present invention, and the woven fabric was not expected to be strong as a base fabric for a rescue bag.

[0022]

[Table 1]

[0023]

EFFECT OF THE INVENTION The anti-slip fabric according to the present invention has a structure as described in detail above, and when used as a rescue bag, it is lightweight, has excellent strength in the length direction of the bag, and has a durable braking function. It can be used as a rescue bag that has a smoothness that enables the evacuees to evacuate efficiently. Further, in manufacturing the same, the number of manufacturing steps is smaller than that of a conventional fabric for a rescue bag using a staple fabric, and thus an inexpensive rescue bag can be obtained.

Claims (3)

[Claims] 1. A raised woven fabric comprising synthetic fiber filaments having a total fineness of at least 400 denier, the woven fabric having a weave density of 20 to 60 filaments / inch and a coefficient of static friction of 0.1 on the raised surface.
A non-slip fabric comprising a structure of 6 to 0.26 and having a tensile strength in the longitudinal direction of at least 150 kgf. 2. A non-slip fabric, wherein the raised fabric according to claim 1 is a fabric for a rescue bag. 3. An anti-slip fabric, wherein the raised fabric according to claim 1 or 2 is raised using an emery raising machine equipped with a cloth polishing belt.