JPS6055969A - Initial fire extinguishing cloth - 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 an initial fire extinguishing fabric which is a nonwoven fabric impregnated with an aqueous dispersion and folded into a container that can be opened and closed.

More specifically, the nonwoven fabric uniformly contains the amount of aqueous dispersion necessary for initial extinguishing of textile fires and tempura oil fires, and the aqueous dispersion does not retain water in the nonwoven fabric even during storage for many years. This invention relates to an initial fire extinguishing cloth characterized in that it does not separate and accumulate at the bottom of the container, and can be taken out from an openable and closable container in an emergency, unfolded, and placed directly over a fire source.

It is well known that for the initial extinguishment of tempura oil fires and kerosene stove fires, it is a good idea to wet a sheet or blanket with water and cover it over the source of the fire. However, in an emergency, in the time it takes to bring out a sheet or blanket, soak it in water, wring it tightly to prevent water from getting into the tempura pan, and then spread it out, the flames could grow and become uncontrollable. However, keeping sheets and blankets wet with water for emergencies is a good idea because it can cause contamination of the cloth due to the growth of bacteria and mold in the water, the durability of textile products in water, and the storage format. There are a number of problems with this.

To prevent water from spoiling over many years, sterilize the water with a known preservative and use a sealed container that completely isolates it from the atmosphere, such as a metal can or a completely sealed container with no openings. Seal it in a plastic container. However, once these containers are opened and exposed to the atmosphere, water cannot be stored very well.

Also, soaking sheets or blankets in a container filled with excess water will cause the cloth sides to stick together when you take them out, making it difficult to spread them out.Furthermore, in the event of a tempura oil fire, excess water will spill into the tempura pan. There is also the inconvenience of having to squeeze it tightly and then unfold it to cover it.

The present invention provides an initial fire extinguishing cloth that solves these problems, and its contents are as follows.

A flat nonwoven fabric is coated with an aqueous dispersion containing at least one selected from water-soluble synthetic resins, water-based synthetic resin emulsions, flame retardants, fire extinguishers, moisture absorbers, and antifreeze agents.
It is characterized in that it is impregnated with 0 g·/m2 to 1500 g·/m2, folded and placed in a container that can be opened and closed, and that the aqueous dispersion does not separate and accumulate at the bottom of the container during storage. In addition, the nonwoven fabric is uniformly impregnated with the aqueous dispersion during storage, and can be folded into a cylindrical or prismatic shape with a height of 10 cm to 23 cm so that it does not take up much storage space and is easy to handle. shall be.

If you measure the amount of water retained by folding an average commercially available sheet in half, immersing it in water, and squeezing it slightly, the amount of water retained will be 45% compared to the sheet's weight of 500g/m2.
It is 0g/m2.

The initial fire extinguishing fabric of the present invention is lightweight and capable of retaining as much or more water than an average sheet.

Since the initial fire extinguishing cloth of the present invention uses a container that can be opened and closed, it can be used for daily fire extinguishing training just as it would be in an emergency situation. It has the advantage that it can be supplemented by adding water. In addition, even if there is a risk that decomposition gas or free gas components may be generated from the aqueous dispersion during storage, the internal pressure should be prevented from increasing by adjusting the opening and closing part of the container. It has the advantage of being able to

In order to keep moisture evenly on the cloth and to prevent mold and bacteria from growing on the cloth, even when stored for many years in a container that can be opened and closed,
The quality of the fabric, aqueous dispersion, and container must be carefully examined.

It is important for the cloth to remain sufficiently wet with the aqueous dispersion during storage in terms of its fire extinguishing performance, and it is always important to prevent the growth of mold and other germs on the cloth. In addition, a fabric with a large water retention capacity relative to the weight of the fabric is desirable because it allows a lightweight and large initial fire extinguishing fabric to be made.

In response to these requirements, we have discovered that among fabrics made from natural fibers, man-made fibers, and synthetic fibers, that is, woven fabrics, knitted fabrics, and nonwoven fabrics, flat nonwoven fabrics that meet the following conditions best meet the above requirements. Ta.

The flat nonwoven fabric used in the present invention has an equilibrium moisture content of 6% or more and a basis weight of 100 g/m2 to 250 g/m2.
and the length of one side or axis is 0.7m to 2.5m,
A rectangular or circular flat plate with a surface area of 0.5 m2 to 5 m2 on one side is used. Its average thickness is 0
．． It may be 5 mm to 3.0 mm.

Furthermore, this flat nonwoven fabric may be made by printing or dyeing patterns, letters, pictures, etc. Alternatively, it may be subjected to flame retardant treatment or resin treatment by a known method.

The fibers that make up this flat nonwoven fabric are mainly fibers with high equilibrium moisture content such as cotton, rayon, wool, silk, and hemp, and if necessary, synthetic fibers such as nylon thread, vinylon thread, and polyester thread are used. or inorganic fibers may be used in combination.

Further, the shape of the flat nonwoven fabric is generally square or rectangular, but it may also be circular or oval. Alternatively, a smaller rectangular or circular plate-like cloth may be sewn to the center of a rectangular or circular flat non-woven fabric to make the central part thicker. For flat non-woven fabrics, attach flame-retardant plastic rods or stainless steel rods to the top of the non-woven fabric in two places so that you can work a little further away from the fire source, or even if you cover your face with the non-woven fabric, you can clearly see the fire source. You can also make a small hole in a part of it and sew heat-resistant glass or heat-resistant film into it with thread.

Next, the aqueous dispersion used in the present invention consists of water and at least one selected from water-soluble synthetic resins, aqueous synthetic resin emulsions, flame retardants, fire extinguishers, moisture absorbers, and antifreeze agents. . Further, if desired, known antifungal agents or bactericidal agents, synthetic thickeners, pigments, etc. can be added to these.

Examples of water-soluble synthetic resins include condensation resins, polycondensation resins, or polymer resins having methylol groups, such as methylolated amino resins, amino resins whose methylol groups are etherified with lower alcohols, and polymer resins containing N-methylol acrylamide as segments. and water-soluble phenolic resins are preferred. Furthermore, base resins used for baking-type synthetic resin paints and electrodeposition paints can also be used. Examples of aqueous synthetic resin emulsions include vinyl acetate, acrylic, and vinylidene chloride emulsions. Among these, those with a film-forming temperature of 40° C. or higher are preferred because they do not form a film at room temperature and yet have good water retention properties for flat nonwoven fabrics like water-soluble synthetic resins.

Flame retardants include tetrabromobisphenol, antimony trioxide, aluminum hydroxide, etc., and extinguishing agents include ammonium phosphate, sodium hydrogen carbonate, etc.

The moisture absorbing agent is effective for suppressing the evaporation and loss of the aqueous dispersion impregnated into the flat nonwoven fabric, and examples thereof include potassium carbonate and sodium carbonate. Further, antifreeze agents include calcium chloride, magnesium chloride, and common salt.

In addition, even if the above components are liquids that are insoluble in water,
It can also be emulsified using a surfactant to form an aqueous dispersion.

The aqueous dispersion used in the present invention preferably contains water in an amount of 50% by weight or more, preferably 70% by weight or more, even if these various components are used.

As a method for impregnating a flat nonwoven fabric with an aqueous dispersion, the nonwoven fabric may be folded and then impregnated, or the nonwoven fabric may be impregnated and then folded.

It is important for the initial fire extinguishing cloth to be easy to handle in view of its intended use. In other words, it must be easy to carry and operate quickly. For this purpose, it is best to fold a flat sheet of nonwoven fabric into a cylindrical or prismatic shape and store it upright in a container that can be opened and closed. When the height is higher than 23 cm, the amount of water retained in the aqueous dispersion is greater at the bottom than at the top, making it difficult to obtain a nonwoven fabric uniformly impregnated with the aqueous dispersion.

In the initial fire extinguishing cloth of the present invention, a flat nonwoven fabric can be impregnated with 450 g/m2 to 1500 g/m2 of an aqueous dispersion. It is possible to maintain a minimum amount of moisture necessary for extinguishing a fire without adding too much weight, and to prevent the aqueous dispersion from separating and accumulating at the bottom of the container even during long-term storage.

The container that can be opened and closed for use in the present invention may be one that has a water vapor permeability of 0 or low and has an opening that allows it to be opened and closed freely. Examples include (1) containers made of plastic bags that can stand up, for example, in the shape of a doypack with a chuck attached to the top opening that can be opened and closed; (2) plastic molded containers with lids; 3) Metal can containers with lids whose inner surfaces are coated with epoxy, (4) Glass containers with lids,
(5) There are ceramic containers with lids. On the lid,
Packing can also be used between the container body and the container body. It is also possible to add some flair to the container and use it as a craft or an ornamental container.

Next, examples of the initial fire extinguishing cloth of the present invention will be described.

Example: A nonwoven fabric with a length and width of 1.0 m x 1.25 m and a fabric weight of 160 g/m2 and a thickness of approximately 1.3 mm was made of 67 weight percent of rayon, 25 weight percent of polyester fiber, and 8 weight percent of heat-fused synthetic fiber. to make. The equilibrium moisture content of this flat nonwoven fabric is 7.4%, and its weight is 2.
00g.

Further, an aqueous dispersion is prepared by stirring and dissolving each component according to the following formulation in order from the top.

Formula of aqueous dispersion (unit: g・) Water 900 Potassium carbonate 50 4% nonionic surfactant aqueous solution (HLB=14) 10 Modified melamine resin (resin content 80%, viscosity 25P・/25℃) 40 Foaming agent Trace amount total 1,000 The obtained aqueous dispersion is a slightly milky white liquid with low viscosity, exhibits pH=11, and is stable at room temperature.

Next, fold the flat nonwoven fabric horizontally along the center line each time to make the length 12.5cm, then fold it in half vertically leaving 25cm on the left edge, and then fold this in half 50cm from the left edge. After folding it, roll it into a circle from the thickest right end to the left end, making it 12.5 cm in height and 12 cm in diameter.
Let it be a cylindrical shape of m.

This cylindrically wound non-woven fabric was immersed in an aqueous dispersion and squeezed lightly to prevent the aqueous dispersion from falling off the non-woven fabric.
Place in a 20cm x 20cm plastic bag.

The top of the bag has a chuck that allows it to be opened and closed freely.

At this time, the amount of aqueous dispersion impregnated into the nonwoven fabric was 840g.
It was hot. Therefore, the surface area of one side of the nonwoven fabric is 672 g per square meter, of which water is 616 g.

Note that Doipatsu-type plastic bags have an outer diameter of 15 mm.
A laminate film made of a 180μ nylon film and a 180μ polyethylene film was used.

Patent applicant Nobuyoshi Nagata

Claims (1)

[Claims] (1) Equilibrium moisture content 6% or more, basis weight 100g/m2~2
At 50g/m2, the length of one side or axis is 0.7
A rectangular or circular flat nonwoven fabric with a surface area of 0.5 m2 to 5 m2 and a surface area of 0.5 m2 to 5 m2 on one side is coated with a water-soluble synthetic resin, a water-based synthetic resin emulsion, a flame retardant, a fire extinguisher, a moisture absorbent, and an antifreeze agent. 450g/m2 to 1500g/m2 of an aqueous dispersion containing at least one selected species.
Impregnate it, fold it and put it in a container that can be opened and closed.
Initial fire extinguishing cloth characterized by the fact that the aqueous dispersion does not separate and accumulate at the bottom of the container during storage (2) Featured by being folded into a cylindrical or prismatic shape with a height of 10 cm to 23 cm Initial fire extinguishing fabric according to claim 1