JPS58142815A - Pipe route covering material - Google Patents

Abstract

PURPOSE:To prevent flames and smoke from passing through a pipe route by such an arrangement wherein a pipe route covering material is composed of a base material which does not expand or contract, an expansion layer and a protective film covering said layers, and the pipe route is crushed by the expansion layer when it is caused to expand by heat. CONSTITUTION:A base material 3A is composed of non-inflammable materials which are flexible and substantially do not expand or contract such as thin plate, woven matters, non-woven matters of metal, ceramic, inorganic substance, steel, etc. Next, an expansion layer 3B is composed of such substance that emits gases such as nitrogen gas, water, carbonic acid gas, etc. by being decomposed by heat, such as organic foaming agent, inorganic compound having hydrate water, lower fatty acid salt, etc., a mixture of one or more than 2 kinds of natural resin, synthetic resin or semisynthetic resin as a binding agent and other additives such as filler agent, age-resistor, ultraviolet ray absorbing agent, non-inflammable agent, etc. Next, a protective film 3C is made of a material which has non permeability of gas and moisture and protects said expansion layer from outside and prevents it from being denatured.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pipe covering material that crushes the pipe and prevents flames, 131, etc. from passing through the pipe in the event of a fire or the like.

As is well known, buildings are equipped with pipes such as water and sewer pipes, electric wires, covered pipes, etc. for telephone lines, etc. In the event of a fire, flames, smoke, etc. can pass through the pipes, causing the fire to spread and smoke damage to increase. It is very often the main cause.

The purpose of the present invention is to prevent the spread of fire and smoke damage caused by the above-mentioned pipes in the event of a fire. The main point is

The present invention will be explained based on one embodiment shown in the drawings. FIG. 1 shows a tape-shaped conduit covering material (3). The pipe covering material (3) consists of a flexible base material (3) and a flexible expansion layer (3) B.
and a protective film (3) covering these.
1 & Material (3) Metals such as iron, aluminum, stainless steel, and alumina.

Ceramics such as silica and ziconia, and asbestos.

Thin plates of rock wool, glass, other inorganic materials such as foot grains, or ropes of these metals and inorganic fibrous wires, l
a) Made of flexible, non-combustible material such as woven or non-woven material that does not substantially stretch or contract. The base material (3) is made of a material that does not substantially expand or contract at the temperature at which the expansion layer (3)B expands.

As the flexible expansion layer (3) B, Azoshika V Bonamide;
Organic blowing agents such as azobisin butyronitrile, silicates,
Inorganic compounds with water of crystallization such as borates, sulfates, phosphates, phosphates, and formates.

Lower fatty acid salts such as acetate and oxalate, #12 acid salt monobicarbonate, alum, Joki Yuki blowing agent, and capsules of organic solvents are decomposed by heat to produce nitrogen gas.

Mainly consists of substances that release gases such as water, lower fatty acid monopod acid gas, and organic solvents, and the above substances are combined with acetic acid as a binder.
Resin, Fuhua vinyl resin, Atari V resin, methacrylic μ resin, styrene resin, polyethylene, polypropylene, fluororesin, acryl-tolyl-butadiene copolymer, acrylonitri-V-butadiene-styrene copolymer, styrene-butadiene copolymer , styrene-butadiene block copolymer, vinyl acetate, ethylene copolymer, urethane resin, urea resin, melamine resin, 7x No/I/#! fat,
Natural resins such as resorcin resin, epoxy resin, polyamide, polyester A/, natural rubber, *powder, polyvinyl alcohol, sodium alginate, carboxymethylate/&/cellulose, rosin, petroleum resin, etc.9 synthetic resins, one or two semi-synthetic resins Mix more than one species. Further, if desired, calcium carbonate, titanium white, chrome yellow, carbon platter, aluminum oxide, aluminum hydroxide, magnesium oxide, magnesium hydroxide, gypsum, silica, alumina, zirconia, hostelite, silica bi- vermiculite, perlite, lime.

Fillers such as ment, slada, etc. may be added to borax, river sand, -, and if desired, anti-aging agents, ultraviolet absorbers, flame retardants, and other additives may be added. 3
) In order to make B flexible, it is desirable that the binder such as the organic blowing agent, inorganic blowing agent, filler, etc. be mixed with the binder in a weight ratio of 106:! Set the range from I to about 100:30. Further, the glass transition point of the resin constituting the binder is preferably 30°C or lower, I! The temperature is preferably 16°C or lower. In addition, the expansion layer (3) door needs to have a layer that starts to expand only when exposed to high temperatures such as in the event of a fire, and it is desirable that FiWII expansion does not occur at all at high temperatures in the summer, for example.

Therefore, the expansion start temperature of the expansion layer (3)B is at least 10
The temperature should be 0°C or higher, preferably about a12G°C or higher.

As the protection 71pv A (3) 0, a material is used that is impermeable to gas and moisture and protects the expansion layer (3)B from the outside world to prevent degeneration. 74V like this
Polyvinyl chloride, polyvinylidene chloride,
Acrypv@fat, Methacryp resin, vinyl acetate v11 fat,
Examples include synthetic resins such as styrene resin, urethane resin, epoxy resin, polyester μ, ethylene-vinyl acetate copolymer, styrene-butadiene copolymer, and acrylonitrile-butadiene copolymer. The synthetic resin was prepared in advance by 7
The expansion layer (3) B may be coated after the foam is formed into 4 lumens, or the emulsion or solution of these synthetic resins may be applied to at least the expansion layer (1) door and dried.
If the base material (3) is made of a porous material such as a knitted fabric, a non-woven fabric, or a porous material such as #1, the base material (3) may also form a film (3)C. It is desirable to cover with

The pipe covering material (3) may be, for example, polyvinyl chloride, polyethylene, polypropylene, glass kRIa, 4!, as in the first embodiment shown in FIG. The outer periphery of the part of the pipe (1) protruding from the wall (2) or the internal part of the wall (2), or the internal part of the wall (2), made of synthetic resin such as M-blascittas, bolybdenum, metal such as aluminum, lead, etc. It is wrapped around the inner and outer parts in a conical or cylindrical shape. After winding the pipe (1) to the specified length, cut it. pipe(
1) and the conduit covering material (3) may be fixed with an adhesive, adhesive, etc., if desired. In addition, it is desirable to apply a synthetic resin similar to the synthetic resin constituting the protective layer 74 (3) C to the cut surface of the pipe covering material (3) in the form of an emulsion or a solution. .

Figure 3 is II2'J! This shows an example of winding. In Figure 3, pipe (1) is connected to pipe (1) B and pipe (1) 0 through a T-shaped pipe joint (1) D at a position protruding from the wall (2). Pipe joint (1) The outer periphery of the D portion is the same base material as in the tJIi1 example (3) a sheet-like pipe covering material (3) consisting of a rubber band and an expansion layer (1) B.
covered by.

In Figures 2 and 3, when the pipe covering structure is directly or indirectly exposed to flame in the event of a fire, the pipe (1) is damaged by the high heat of the fire (4) as shown in Figure 3. When -)', the expansion layer (3)B expands, but the expansion J
l(3) B is restricted from expanding in the outer circumferential direction by the base material (3), so it expands in the inner circumferential direction, that is, in the pipe (1).
t# Expands in the crushing direction.

In this way, the pipe (1) is crushed and the conduit is cut off.

In addition to the embodiments described above, the pipe covering material of the present invention may be simply inserted into a protective duct covering a pipe.

Preferred specific examples of the pipe covering material (3) consisting of the base material (3) A and the expansion layer (3) B are shown below.

Pipe covering structure 1 Base material t3) A Steel wire mesh expansion layer <3)
B: Water glass powder too parts by weight Acrylic μ
Resin emulsion carbon 15 (50 weight percent solids content) Water glass solution 10 parts by weight The above mixture is applied onto the base material (3) and dried to obtain an expanded layer (3) B.

Pipe covering material N12 Base material (3): Glass cloth expansion layer (!l): Potassium borate crystal 100-layer lid styrene-
Butadiene copolymer 30 Latex (40 weight ml/ss) Carboxymethycfi/Q-S a5 water
10 Apply the above mixture onto the base material (3) and dry it to form an inflatable layer (3).
) get B.

3 Substrate (3) Mum: aluminum thin film expansion layer (3) B: azobisinbutyronitrile A 15 parts by weight vinyl acetate resin resin resin margin 30 water glass powder too parts by weight aluminum hydroxide 100 mixture of the above The base material (3
) By applying and drying the intumescent layer (3) B
get.

Since the present invention has the above configuration, when the expansion layer covering the outer periphery of the pipe expands due to heat, it is restricted from expanding in the outer circumferential direction by the base material, and as a result expands in the inner circumferential direction and pushes the pipe. By crushing and blocking the pipe, it is possible to reliably prevent flames and smoke from passing through the pipe.

[Brief explanation of drawings]

Fig. 1 is a longitudinal cross-sectional view of an embodiment of the present invention, Fig. 2 is a partially cutaway side view of the tape-shaped conduit covering material wrapped around the pipe, and Fig. 3 is a seam FIG. 4 is a side cross-sectional view of a pipe joint part covered with a pipe covering material, and FIG. In the figure, (3)... Pipe coating material, (3) Mu... Base material, (3) B... Expansion layer bowl 1 Figure 72 Figure procedure amendment document July 1982 2θ Kazuo Wakasugi, Commissioner of the Japan Patent Office, 1, Indication of the case, Patent Application No. 026340 of 1982, 2, Title of the invention: Pipe covering material 3, Relationship with the person making the amendment case, Representative Director of Patent Applicant, Katsuobe Eguchi, 4・Agent 〒467 6. Number of inventions increased by amendment Contents of amendment t Correct “(3) and from” in line 11 of the second summer to “-) from 0” ◎!
1st summer, line 4, ``Kurei 111J'' is corrected to ``Kurei 4zu.''that's all

Claims (1)

[Claims] 1. Sand consisting of a flexible base material, a flexible intumescent layer provided on the base material, and a protective 74 lumen covering at least the inflatable layer, the base material substantially comprising: Claims 1. A conduit covering material that does not expand or contract and that the expansion layer expands due to heat. The conduit covering material described in 1 is made into a tape shape. 1 Patent claim i! 11. The pipe covering material described in 1 is formed into a sheet. ′