JPS59228887A - Flame-proof cushion body - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cushion body used for chairs, sofas, beds, cushions, etc.

In addition, in the present invention, the limit iodine index (LOI value) is J
It refers to the "minimum oxygen volume fraction necessary for the fiber material to maintain combustion" determined by the method described in IS-7201-1972.

In Japan, there are no legal restrictions on cushion bodies used in household chairs, beds, etc., so flammable fabrics are used for the outer material, and therefore such cushion bodies are extremely susceptible to ignition. It's easy to burn and it's easy to catch fire.

On the other hand, in the United States and the United Kingdom, there are flame-retardant regulations that require furniture that does not catch fire from tobacco as an ignition source. Furniture such as this has virtually no flame resistance against powerful ignition sources.

The present invention not only exhibits flame retardant properties such as not being ignited by relatively weak ignition sources such as cigarettes, sticks, and lighters, but also does not cause flames even if it comes in continuous contact with stronger flames or ignition sources. The purpose of the present invention is to provide a new cushion body that also has flame resistance.

The object of the present invention is to sequentially include an outer material made of a flame-retardant fabric with a limiting oxygen index of 25 or more, a carbonized fiber layer with a limiting oxygen index of 40 or more and a basis weight of 100 g/771 or more, and a cushioning material. This is achieved through a flame-resistant cushion body.

The present invention will be described in detail below with reference to the drawings.

In Figure 1, the outer material (1) has a limiting oxygen index (L
OI value) 25 or more flame retardant fabrics, such as polyfural fiber, flame retardant acrylic fiber S flame retardant °C Dacryl 1 France flame retardant polyester fiber, flame retardant rayon, natural wool, flame retardant treated wool (e.g. international wool) Zabu 0 designated by the secretariat
Fabrics of 1-ara three-dimensional fibers, novoloid fibers, or mixed fibers of two or more of these fibers are used. There are no restrictions on the handle, method, etc., as long as it can be used as a surface material9. If the LOI value is 25 or more, no ignition will occur even if an ignition source such as a tobacco, matchstick, lighter, etc. is brought into contact with the center of the outer material (1), which is in normal condition without damage or adhesion of combustible materials. do not have. The carbonized fiber layer (2) is Lot
Use a value with a value of 40 or higher and a date of 1OOy/7n2 or higher. For carbonized fiber, the raw material fiber is usually 200 to 1000
It is preferable to use so-called low-elasticity carbon fibers, which are obtained by heat treatment and carbonization at about °C and have flexibility similar to general clothing fibers. The carbonized fibers may be made from any material such as carbon fibers or acrylic fibers. Further, the carbonized fiber layer (2) can be in any form such as woven fabric or non-woven fabric. If the LOI value is 40 or more, it will not ignite or catch fire under natural conditions, and even if it comes into contact with an oxygen-acetin flame at about 3000°C, it will not change or deform within a short period of time. Nor. Moreover, if the date is 100 f/m or more, the flame retardant effect is good and the flame does not penetrate through the carbonized fiber layer itself and come into contact with the cushioning material described below. The cushioning material (3) is covered by the carbonized fiber layer (2) and there is no risk of ignition, so flammable materials such as cotton cotton or soft urethane foam can also be used. Assuming that the material itself will be exposed, it is preferable to use a flame-retardant cushioning material such as flame-retardant urethane foam, vinyl chloride foam, resin foam, and flame-retardant cotton. In order to improve cushioning properties, feel, etc., two or more types of M@ materials may be used in combination, or a sprifter may be placed below the cushioning material (3) according to a conventional method.

According to the present invention, the following effects are achieved: (1) Fires caused by ignition points at cushions, which are considered to be the starting point for many fire outbreaks at present, are prevented.

(i) Since it does not emit flame, the fire does not spread to other parts.

(, ii) The danger of toxic gas generated by combustion of the buffer material is reduced.

(1v) Since all commercially available products can be used as the cushioning material, the cushioning properties can be arbitrarily adjusted depending on the application.

(V) Since a flame-retardant fabric with established manufacturing technology is used as the outer material, there are no restrictions on the design, color, etc. of the cushion body itself.

(Vi) Conventional right eye technology can be used as is.

(Vl Since carbonized fibers have hygroscopic properties, they improve the hygroscopic properties of the entire cushion body.

@1) A certain degree of deodorizing effect is achieved due to the adsorption effect of carbonized fibers.

OX) The outer material can be reinforced by laminating the carbonized fiber layer and the outer material.

(X) Carbonized fiber is lightweight (density approximately 1.5f/CC)
Therefore, the weight of the cushion body does not increase.

The present invention will be explained in more detail with reference to Examples below. However,
The fact that the present invention is not limited to these examples is that
Needless to say.

In each of the following Examples and Comparative Examples, the burner ignition test C (hereinafter simply referred to as burner test) was conducted as follows. That is, as shown in FIGS. 2 to 4, a wire mesh (5) with a mesh of 2 art was placed above a Bunsen burner (4) with a diameter lα that uses propane gas as fuel, and Outer material (1) of 151X15α inside a square iron frame (6) of 10QII on a side and 51 in height
and carbonized fiber layer (2), and 10αxlo
I placed the ax2z cushioning material (3). The flame conditions during the burner test were as follows: reducing flame (7) was 3 cm long, oxidizing flame (8 cm) was
) Length 10 (:If) Hold the wire mesh (5) at a position 5aIi from the tip of the Punsen burner (4), and while continuously bringing the flame of the burner into contact with the center of the outer material, The presence or absence of ignition and flame was examined.

Example 1 Plain weave woven fabric of flame-retardant acrylic fiber (LOI value 32, basis weight 2
(1) Carbonized fiber cloth made from S acrylic fiber (LOI value 60, date 190 (
A cushion body according to the present invention comprising a carbonized fiber layer (2) consisting of 1/m) and a cushioning material (3) consisting of soft urethane foam was subjected to a burner test.

A hole was made in the outer material (1) after 2 seconds, smoke was observed coming from the top of the cushioning material (3) after 20 seconds, and a hole was made in the cushioning material (3) after 50 seconds. After about 3 minutes, the outer material (1) and the buffer material (3) had melted, decomposed, turned into scum and disappeared, but no flaming was observed. No deformation occurred in the carbonized fiber layer (2).

Comparative Example 1 A burner test was conducted in the same manner as in Example 1 except that the carbonized fiber layer (2) was removed. After about 5 seconds, the buffer material (
3) caught fire and went up in flames.

Example 2 The present invention uses flame-retardant soft urethane foam (flame-retardant passed product according to the Japan Flame Retardant Association method, density 0.035 f/CC) as the cushioning material (3) instead of the soft urethane foam of Example 1. When the cushion body was subjected to a burner test, a larger amount of yellow, pungent-smelling smoke was generated than in Example 1, but no flame was generated.

Comparative Example 2 When the same cushion body as in Example 2 except for the carbonized fiber layer (2) was subjected to a burner test, the flame-retardant soft urethane foam caught fire after about 8 seconds, emitting black smoke and bursting into flames. did.

Example 3 A cushion body of the present invention using cotton cotton (density 0.015 f/CQ) as a cushioning material in place of the soft urethane foam of Example 1 was subjected to a burner test, and the result was 1.
After a few minutes, white smoke started to be generated, but no flame was generated even after three minutes.

Comparative Example 3 A cushion body obtained in the same manner as in Example 3 except that the carbonized fiber layer (2) was removed was subjected to a burner test.
Seconds later, the cotton cotton ignited and burst into flames.

Example: Polyester flame retardant cotton (density 0.0
A cushion obtained in the same manner as in Example 1 except that 1 Of/CC) was used was subjected to a burner test.
After about 40 seconds, the buffer material melted, decomposed, and disappeared, but no flames occurred.

Comparative Example 4 A cushion body obtained in the same manner as in Example 4 except that the carbonized fiber layer (2) was removed was subjected to a burner test. After about 5 seconds, the polyester flame-retardant cotton caught fire and burst into flames. Ta.

Example 5 As the outer material (1), a woven wool fabric (Lot
A cushion body obtained in the same manner as in Example 2 except that the cushion body was used was subjected to a burner test. It took about 8 seconds for the flame to penetrate the outer material (1), and the flame-retardant soft horsetail foam emitted smoke in 25 seconds, but no flames occurred.

Example 6 A cushion completely wrapped in a 60 x 60 m x 5 a flame-retardant soft urethane foam (Lot value 58, date 750 f/m) and further sewn with a woven wool fabric (same as that used in Example 5) with zero zabu as the outer material. made.

When this cushion was lowered into a wood waste boiler for 1 minute, the outer material and cushioning material had completely disappeared, but no flaming occurred.

When a similar cushion was soaked with kerosene IQcc and ignited, it spontaneously extinguished in about 2 minutes. Only the part of the outer material that had soaked in the kerosene had been carbonized, and only a portion of the flame-retardant soft horsetail foam had melted.

Example 7 As shown in FIG.
Outer material (fabric weight: 350 f/m, thickness: 0.6 a)
1) Carbonized fiber cloth (LOI value 60, basis weight 460 f/
carbonized fiber layer (2) consisting of carbonized fiber layer (2) consisting of flame retardant soft horsetail tan foam (same as Example 2, thickness 20 ffff)
) and a second cushioning material (9) made of flame-retardant polyester felt (density 0-13f/cc, thickness 10).
A pine tress was manufactured by placing a spring αυ between 11 and 11.

The appearance, shape, cushioning properties, etc. of the pinerest were the same as those of the known pinetress, and it was easy to manufacture, and on the other hand, it was superior to the cushion body of Example 1 in terms of flame resistance.

Example 8 A reception chair having the internal structure shown in FIG. 6 was manufactured. In other words, seven-piece woven fabric made of wool with zero addition (Lot value 33,
Outer material (1) consisting of date 560g/fn, thickness 2.811M>, carbonized fiber layer (2) consisting of carbonized #3j4 textile (same as used in Example 1), and Example as a cushioning material. Polyester flame retardant cotton with a thickness of 5 ym (as before), flame retardant soft urethane foam with a thickness of 40 M as in Example 2, density 0.13 f/cc, thickness 5
Cushioning material made of flame-retardant polyester felt aη (3
) A reception chair with a structure in which the cushion body of the present invention is supported by a spring (b) was manufactured.

The appearance, shape, cushioning properties, etc. of the cushion portion of the reception chair were the same as those of known ones, and the manufacturing was easy, and the flame resistance was superior to that of the cushion body of Example 1.

[Brief explanation of the drawing]

FIG. 1 shows a partial longitudinal section 1i2 of an example of the cushion body of the present invention.
Fig. i, Fig. 2 to Fig. 4 are drawings showing an outline of the burner test conducted in the embodiment of the present application, Fig. 5 is a partial longitudinal sectional view of the pinerest according to the present invention, and Fig. 6 is a drawing showing the outline of the burner test conducted in the embodiment of the present invention. A partial longitudinal sectional view of the reception chair is shown. (1) Outer material (2) Carbonized fiber layer (3
)...Cushioning material (4)...Bunsen burner (
5)...wire mesh (6)...iron frame (7)...
Reduction flame (8)... Oxidized carbon 01)... Spring.

Claims (1)

[Claims] (2) A flame-resistant cushion body characterized by sequentially comprising an outer material made of a combustible fabric with a limiting oxygen index of 25 or more, a carbonized fiber layer with a limiting oxygen index of 40 or more and a date of 100 f/m2 or more, and a cushioning material.