JPH0351143Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a flame-resistant body, and more particularly to bedding articles such as curtains, bed spreads, comforters, and bed pads.

In addition, in this invention, the limiting oxygen index (LOI value) refers to the "minimum oxygen volume fraction necessary for the fiber material to maintain combustion" measured by the method described in JIS-K-7201-1972. shall be said. Article 8-3 of the Fire Services Act stipulates that the flame-retardant items used in fire-retardant properties must have flame-retardant performance that meets or exceeds the standards specified by government ordinance. Curtains and carpets fall under this category of flame-retardant items. However, all of these test standards for flame retardant performance are based on changes in the properties of the test specimen after ignition and removal of the ignition source (burner). Therefore, there is a problem with flame retardant properties targeting ignition sources.

On the other hand, flame retardant fibers themselves have also been developed in Japan. Examples include flame-retardant acrylic fibers, flame-retardant modacrylic fibers, polyclar fibers, aromatic polyamide fibers, flame-retardant polyester fibers, Proban-treated cotton, flame-retardant rayon, and Zapro-treated wool. All of these flame-retardant fibers are organic and suitable for interior decoration, and are easily available, but their flame resistance is insufficient, and, for example, they cannot be used to heat a deep fryer while burning. If you cover it with something, it will instantly burn and melt, creating a hole.

As mentioned above, the flame retardant properties of articles that fall under the category of flame retardant articles and also of known flame retardant fibers are extremely insufficient.

As a result of continuous research to resolve the above-mentioned conventional difficulties, the present inventor has found that by using two specific types of materials together, excellent flame retardant and flame retardant properties can be achieved without impairing the interior design. They discovered that it is possible to obtain a flame-resistant body with the following characteristics, and finally completed the present invention. That is, the present invention uses a outer material made of an organic flame-retardant fabric with a limiting oxygen index of 25 or more but not reaching 40, and a limiting oxygen index of 40.
The above applies to a flame-resistant body to which a backing material made of carbonized fiber with a basis weight of 100 g/m ² or more is bonded.

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

In FIG. 1, the surface material 1 is an organic flame-retardant fabric with a limiting oxygen index (LOI value) of 25 or more but not reaching 40. A typical example is combustible fabric. There are no restrictions on the pattern, weaving method, etc., as long as it can be used as a surface material. Also, it will not ignite even if it comes into contact with a small flame source such as a cigarette, a matchstick, or a lighter. 2 is
Carbonized fiber cloth or nonwoven fabric, such as felt, with an LOI value of 40 or more, and a basis weight of 100 g/m ² or more. The thickness of the surface material 1 is usually about 0.2 to 0.8 mm, preferably about 0.2 to 0.3 mm, and the carbonized fiber layer 2
The thickness is about 0.2 to 1.0 mm, preferably about 0.35 to 0.45 mm.

FIG. 2 is an explanatory diagram of a three-layer structure, and the surface materials 1 and 3 are organic flame-retardant fabrics similar to 1 in FIG. Further, 2 is carbonized fiber cloth or felt similar to 2 in FIG. Figure 2 has interior design on both sides, and has improved washing performance compared to Figure 1.

The carbonized fiber is preferably a so-called low-elasticity carbon fiber, which is obtained by heat-treating and carbonizing raw material fibers at about 200 to 1000° C. and has flexibility comparable to general clothing fibers. Incidentally, the carbonized fiber can be made from any material such as rayon-based, acrylic-based, pitch-based, etc. Further, the carbonized fiber 2 can be in any form such as woven fabric or felt. If the LOI value is 40 or higher, it will not ignite or catch fire under natural conditions, and furthermore, e.g.
Even if it comes into contact with oxygen-acetylene flame at around 3000℃, it will not change in quality or deform for a short period of time.
Further, if the basis weight is 100 g/m ² or more, the flame-blocking effect is good, and the flame will not penetrate through the carbonized fiber layer itself and come into contact with the lower part. This carbonized fiber layer may be blended or woven with other fibers as long as the above-mentioned predetermined requirements are satisfied. According to the present invention, the following effects can be obtained.

() For example, in the event of a fire such as oil in a deep fryer igniting or a stove falling over, the product of this invention can be used as a fire extinguishing cloth.

() Furthermore, if a large fire develops, you can evacuate from the flames by wearing this device around your body.

() Unlike the conventional flame retardant properties mentioned in the Fire Service Act,
Fire resistant.

() Since the surface material uses organic flame-retardant fabric with established manufacturing technology, there are no restrictions on design, color, etc. Further, there is no problem with the curtain's original function as a bedding product.

() Since carbonized fibers have hygroscopic properties, they improve the hygroscopic properties of the entire fabric.

() Due to the adsorption effect of carbonized fibers, a certain degree of deodorizing effect is achieved.

() By joining the carbonized fiber layer and the surface material filling, the surface material can be reinforced.

Hereinafter, the present invention will be explained in more detail with reference to Examples.

However, it goes without saying that the present invention is not limited to these embodiments.

The fire extinguishing test was conducted as follows. That is, as shown in Fig. 3, 500 c.c. of tempura oil was poured into a pot 4, heated sufficiently, and then ignited to create a flame. We covered it with Cloth 5 and examined whether or not it extinguished the fire. Figure 4 shows the state after the fire has been extinguished.

Example 1 Plain weave woven fabric of flame-retardant acrylic fiber (LOI value 32, basis weight 150 g/m ² ) and carbonized fiber layer (LOI value 60, basis weight 150 g/m 2 )
When a cloth made of vinyl acetate-ethylene copolymer (250 g/m ² ) dot-bonded with hot melt adhesive was subjected to an extinguishing test with the carbonized fiber layer side in contact with the flame as shown in Figure 4, the flame was extinguished as shown in Figure 4. It was possible to extinguish the fire, and no deformation occurred except for discoloration of the flame-retardant acrylic cloth and the adhesion of oil soot.

Comparative Example 1-1 When we conducted a fire extinguishing test as shown in Figure 3 using a plain weave woven fabric made of flame-retardant acrylic fiber (LOI value 32, basis weight 300g/m ² ), the fabric melted in about 5 seconds, creating holes and causing a flame. continued.

Comparative Example 1-2 When we conducted a fire extinguishing test as shown in Figure 3 on a plain woven fabric (LOI value 31, basis weight 350g/ ^m2 ) treated with Wool Zapro (flame retardant), the fabric melted in about 15 seconds and holes were formed. Aki, the flames continued.

Example ² A plain woven fabric of flame-retardant acrylic fibers (LOI value 32,
(Weight: 150 g/m ² ) was dot-bonded using an ethylene-vinyl acetate copolymer adhesive (Figure 2). When a fire extinguishing test was conducted using this cloth as shown in Figure 3, it was possible to extinguish the fire as shown in Figure 4. The flame-retardant acrylic on the side that was in direct contact with the flame and pot had melted, but the flame-retardant acrylic on the other side, which had been completely cut by the carbonized fiber layer, remained unchanged.

[Brief explanation of the drawing]

Figures 1 and 2 are cross-sectional views of the basic structure of the present invention;
Figures 3 and 4 are drawings showing an outline of the fire extinguishing test on tempura oil flames. 1... Surface fabric made of organic flame-retardant fabric (bonded to the front side of the carbonized fiber layer), 2... Carbonized fiber layer, 3... Cloth made of organic flame-retardant fabric (bonded to the back side of the carbonized fiber layer), 4...
Deep fryer with oil on fire, 5. Cloth for fire extinguishing test.

Claims (1)

[Scope of Claim for Utility Model Registration] Joining of outer material made of organic flame-retardant fabric with a limiting oxygen index of 25 or more but not reaching 40 and lining material made of carbonized fiber with a limiting oxygen index of 40 or more and a basis weight of 100 g/m ^{2 or} more flame resistant body. The core material is carbonized fiber woven or nonwoven fabric with a critical oxygen index of 40 or more and a basis weight of 100g/m2 ^{or more} ,
The flame-resistant body according to claim 1, which is a utility model registration, and has a three-layer structure in which organic flame-retardant fabrics with a limiting oxygen index of 25 or more but not 40 are bonded on both sides.