JPS62118189A - Sheathing material for heat-insulating cold-insulating piping - 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] Purpose of invention (Industrial application field) This invention relates to an exterior material for heat-insulating and cold-insulating piping.

(Prior Art) Conventionally, a heat-insulating material and a moisture-proofing material have been attached to the outer periphery of a pipe that requires heat-retaining and cold-retaining, and an exterior material for heat-retaining and cold-retaining piping has been attached to the outer periphery. The materials used were thin iron sheets for zinc, vinyl chloride, stainless steel, etc., but thin iron sheets for zinc corrode easily and had to be painted, while vinyl chloride cracked due to ultraviolet rays and
There was a problem that it had to be replaced after three years, and there was also a problem that stainless steel was expensive.

Therefore, in order to solve these drawbacks, it has been proposed to use FRP tape, which has excellent mechanical strength, as an exterior material for piping. In this case, an FRP tape was wound around the outer periphery of a heat insulating material and a moisture proof material attached to the outer periphery of the pipe, and then cured by irradiating ultraviolet rays with an ultraviolet lamp.

(Problems to be Solved by the Invention) However, the conventional exterior material for piping made of FRP tape is inconvenient because it needs to be cured using an ultraviolet lamp, and the work of wrapping the tape is troublesome. As a result, work efficiency is poor and it requires skill to wrap the tape uniformly, making it difficult to establish construction standards.

Furthermore, since it cannot be colored after irradiation with an ultraviolet lamp, there is a problem in that it is inconvenient to identify the piping.

Structure of the Invention (Means for Solving the Problems) In order to solve the above-mentioned problems, the first invention impregnates glass fiber maftro with an unsaturated polyester resin and molds it into a cylindrical shape with cuts 4a along the entire longitudinal direction. We have adopted a configuration in which

In addition, in the second invention, in order to solve the above-mentioned problem, the glass fiber maturo and the non-woven fabric 7 are impregnated with an unsaturated polyester resin, and the non-woven fabric 7 is overlapped and integrated so that the non-woven fabric 7 is on the surface, and cuts are made in the entire longitudinal direction. 4a is adopted.

(Function) By employing the above means, the first invention uses an exterior material made by impregnating a glass fiber mat with an unsaturated polyester resin and forming it into a cylindrical shape with cuts in the entire longitudinal direction as a heat insulating material.
and the moisture-proofing material is attached to the outer periphery of the pipe, and the cut is sealed.

In addition, the second invention adopts the above-mentioned means, so that an exterior material formed by overlapping a nonwoven fabric on a glass fiber mat and impregnating it with an unsaturated polyester resin and forming it into a cylindrical shape with cuts in the entire longitudinal direction, It is attached to the outer periphery of the pipe to which the heat insulating material and moisture proofing material have been attached, and the cut is sealed.

(Embodiment) Hereinafter, an embodiment embodying the second invention prior to the first invention will be described with reference to FIGS. 1 to 5.

As shown in Figure 4.5, a heat insulating material 2 is attached to the outer periphery of the pipe 1, and an aluminum adhesive tape 3 is attached to the outer periphery as a moisture barrier material.
is wound. Then, a final sheathing material 4 is attached to the outer periphery thereof.

Next, the manufacturing apparatus and manufacturing method for this exterior material 4 will be described in the first to third
The diagram will be explained.

FIG. 1 shows a type 5 of a cylindrical piping sheathing material having a stepped portion 5a at the base end, and is made of metal, wood, plaster, FRP, or the like. As shown in FIG. 2, the same type 5 is rotatably supported, and the same type 5 includes glass fiber matsuro wound into a roll, and a nonwoven fabric 7 also wound into a roll (for example, the product name is 0L-11). (manufactured by Nippon Pyrene ■) are sequentially rewound and wrapped in an overlapping state.

The nonwoven fabric 7 is, for example, polyester fiber, polypropylene fiber, rayon fiber, etc.
Prevents surface scratches and smoothes the surface.

Directly above the mold 5 is a rotatably supported application roller 8.
is provided. Directly above it, a tank 9 is provided, in which unsaturated polyester resin with excellent mechanical strength (for example, trade name: ESTA R235A-1, Mitsui Toatsu Chemical Co., Ltd.
(500 g) and colorant (all colors except silver are available. Select and use any color you like. For example, product name,
iso-based toner, manufactured by Kodo Chemical ■, 10g), and then Pairn, RiN, (as a curing catalyst).
Product Name 1 4 Mixed with Nippon Oil & Fats (manufactured by Yuki, 4g) and stirred
14 fat liquid 10 is accommodated. The resin liquid 10 contained in the tank 9 is applied by the coating roller 8 to the glass fiber maturo nonwoven fabric 7 wrapped around the mold 5.

As shown in FIG. 3, just before the mold 5 makes one revolution, that is, when it reaches the butt part of the first and second layers, a cut 4a is formed in the entire longitudinal direction with the shielding plate 11 sandwiched between them to prevent them from coming into contact. Then, an overlapping portion 4b is formed for overlapping when the exterior material 4 is attached to the pipe 1. Furthermore, a flange-like overlapping part 4c is formed at one end in the longitudinal direction by the stepped part 5a at one end of the mold 5. Note that the other end in the longitudinal direction is defined as an end portion 4d. When it hardens in this state for about 30 to 60 minutes, it becomes FRP, and as shown in Figure 1, the mold 5
The exterior material 4 is completed.

As shown in Fig. 4.5, the exterior material 4 manufactured in this way is attached to a pipe l wrapped with heat insulating material 2 and aluminum adhesive tape 3.
The overlapping portion 4b of the exterior material 4 is sealed with a silicone sealant 12. Also, each exterior material 4.4
The overlapping portion 4c and end portion 4d are placed together and sealed with caulking 13.

In the second invention example, heat resistance, cold resistance, flame retardance,
The exterior material 4 is manufactured by skillfully utilizing the characteristics of FRP, which has excellent electrical characteristics. By making several types of molds 5, it is possible to manufacture exterior materials 4 with different diameters.Also, since it is possible to color each pipe in a color other than silver, a different coloring agent can be applied to each pipe using resin liquid lO.
It can be mixed into the pipes and given a different color to make the pipes easier to identify. In addition, when attaching the exterior material 4 to the pipe 1, the exterior material 4 is elastically deformed, the cut 4a is opened, the exterior material 4 is fitted into the pipe, and the overlapping portion 4b is sealed with the sealant 12, so installation is easy. does not require operator skill,
Work efficiency can be improved.

Next, the first invention will be described. The nonwoven fabric 7 of the second invention is omitted, but the rest is the same. The first invention has the same effects as the second invention, except for the effect of preventing the surface of the sheathing material 4 from cracking and making it smooth, which is based on the nonwoven fabric 7.

Note that the present invention is not limited to the above-mentioned embodiments (the present invention may be implemented as follows).

(1) Instead of the silicone sealant 12, a urethane sealant or a butyl rubber sealant may be used.

(2) It may be used for exterior materials 4 such as elbows, reducers, and T-shaped two-piece cheeses as shown in FIGS. 6 to 8.

(3) As shown in FIG. 9, the cuts 4a of the sheathing material 4 should be bent alternately at the beginning and end of the winding to form bent portions 4e. In this case, the bent portions 4e are hooked together and sealed with a silicone sealant 12 in the same manner as in the previous embodiment.

(4) Although the overlapping part 4b was provided in the above embodiment, the overlapping part 4
b may be omitted, butted and sealed with tape.

(5) The application roller 8 may be omitted and the resin liquid IO may be applied by a brush (not shown).

Effects of the Invention As detailed above, the first invention is easy to construct and can improve work efficiency.Also, since the unsaturated polyester resin can be colored in various colors, each pipe can be colored differently. It is also possible to facilitate identification, and furthermore, the second invention is similar to the first invention.
In addition to the effects of the invention, the surface of the exterior material is smooth and scratches can be prevented.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment embodying this invention;
Figure 2 is a front view of the road body showing the manufacturing process of the exterior material, Figure 3 is a cross-sectional view of the exterior material, Figure 4 is a cross-sectional view of the piping equipped with the exterior material, and Figure 5 is the same (partial cross-section). A side view, FIGS. 6 to 8 are perspective views showing another example of the present invention, and FIG. 9 is a partial cross-sectional view showing another example of the exterior material.

Claims (1)

[Scope of Claims] 1. An exterior material for heat-insulating and cold-insulating piping, characterized in that a glass fiber mat (6) is impregnated with an unsaturated polyester resin and formed into a cylindrical shape having cuts (4a) along the entire longitudinal direction. 2. The exterior material for heat/cold insulation piping according to claim 1, wherein one of the abutting ends of the cut (4a) is provided with an overlapping portion (4b) for overlapping. 3. The exterior material for heat/cold insulation piping according to claim 1 or 2, wherein an overlapping part (4c) for overlapping with the adjacent exterior material (4) is provided at one end in the longitudinal direction. 4. The exterior material for heat-insulating and cold-insulating piping according to claim 1, wherein the unsaturated polyester resin is colored with a coloring agent. 5 A glass fiber mat (6) and a nonwoven fabric (7) are impregnated with an unsaturated polyester resin, and the nonwoven fabric (7) is layered on the surface to form a cylinder with cuts (4a) in the entire longitudinal direction. Exterior material for heat-insulating and cold-insulating piping characterized by being formed into a shape. 6. The exterior material for heat/cold insulation piping according to claim 5, wherein one of the abutting ends of the cut (4a) is provided with an overlapping portion (4b) for overlapping. 7. The exterior material for heat/cold insulation piping according to claim 5 or 6, wherein one end in the longitudinal direction is provided with an overlapping part (4c) for overlapping with the adjacent exterior material (4). 8. The exterior material for heat/cold piping according to claim 5, wherein the unsaturated polyester resin is colored with a coloring agent.