JP2001208289A - Heat insulating material for piping - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat insulating material for piping preventing infiltration of water into an inorganic fiber heat insulating material, capable of completely preventing dewing in a cold water pipe surface, and capable of execution work corresponding to a pipe of every diameter. SOLUTION: This heat insulating material for piping is characterized by applying a coating of a skin material 1 composed of a compound film of an aluminum layer 2 and a polyester resin layer 3 so as to place the aluminum layer 2 in an outer side to an inorganic fiber material 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating material for piping, and more particularly to a heat insulating material for heat insulation in which dew condensation or the like is feared in applications of cold water heat insulating material.

[0002]

2. Description of the Related Art Conventionally, as a heat insulating material used for heat-retaining construction of pipes in which dew condensation such as a cold water pipe is concerned, a heat insulating material made of a urethane foam molded product and a heat insulating material made of glass wool are known.

[0003]

The heat insulating material made of the urethane foam molded article needs to be formed and processed in accordance with the shape of the pipe, and the pipe diameter and the shape are different for each pipe, so that the production is troublesome. There is such a disadvantage. Further, the heat insulating material made of glass wool lacks moisture resistance, and has a disadvantage that it is necessary to separately perform a moisture proof treatment after applying the heat insulating material to the pipe. An object of the present invention is to provide a heat insulating material for piping which has solved the above disadvantages.

[0004]

According to a first aspect of the present invention, there is provided a heat insulating material for piping according to the first aspect of the present invention, wherein a skin material comprising a composite film of an aluminum layer and a polyester resin layer has an aluminum layer on the outside. Characterized by being coated with an inorganic fiber material so that As a result, moisture can be completely shut off to prevent the occurrence of dew condensation.
A heat insulating material for piping that can be handled with a uniform material is provided. In addition, the heat insulating material for piping according to claim 2 is characterized in that, in the heat insulating material for piping according to claim 1, the thickness of the polyester resin film is 150 μm or less. Thereby, the flexibility of the heat insulating material can be secured, and the heat insulating material can be applied to pipes of all pipe diameters. Further, the heat insulating material for piping according to claim 3 is the heat insulating material for piping according to claim 1 or 2, wherein the inorganic fiber material is obtained by aligning and laminating inorganic fibers to which a binder resin is adhered in a layered manner. It is a corrugated inorganic fiber plate which is folded in a zigzag shape to orient the inorganic fibers in a vertical direction.
Thereby, good heat insulation and workability can be secured.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, by using a composite film of an aluminum layer and a polyester resin layer as a skin material, the aluminum layer compensates for the moisture impermeability of the polyester resin layer and completely blocks moisture. Does not cause condensation. That is, the aluminum layer functions as a protective material for the polyester resin layer, and prevents the imperviousness from being destroyed by an external impact. In addition, the polyester resin layer functions as a reinforcing material for the aluminum layer and prevents wrinkles and the like. This skin material is adhered to the inorganic fiber material via an adhesive or the like. Due to the flexibility of the inorganic fiber material, it is not necessary to prepare separate materials for all pipe diameters. It will be able to respond.

The aluminum layer has a thickness of 15 to
Those having a thickness of 150 μm are preferred. This is because if it is less than 15 μm, it is too thin and easily broken, and if it exceeds 150 μm, it is too thick and the workability such as bending is poor.

The polyester resin layer has a thickness of 1
Those having a size of 50 μm or less are preferred. This is because if it exceeds 150 μm, it is too thick and the workability such as bending is inferior.

[0008] The composite film of the aluminum layer and the polyester resin layer is manufactured by bonding the aluminum layer and the polyester resin layer with, for example, an acrylic, olefin, urethane or rubber adhesive.

The inorganic fiber material may have an average fiber diameter of 0.5 to 12 spun by a centrifugal method, a flame method, or the like.
Glass fibers of about μm or ceramic fibers are used. In addition, from the viewpoints of heat insulation and workability, corrugated inorganic fibers in which inorganic fibers to which a binder resin is adhered are oriented in layers and the laminated inorganic fiber webs are folded in a zigzag manner to orient the inorganic fibers in the vertical direction. The use of plates is preferred.

As the adhesive for bonding the skin material and the inorganic fiber material, an acrylic, olefin, urethane or rubber adhesive, a hot melt adhesive or the like can be used.

[0011]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows an embodiment of the heat insulating material for piping of the present invention. In FIG. 1, reference numeral 1 denotes a thickness of 100 μm and a moisture permeability of 0.002.
A skin material having a moisture permeability of 0 (detection limit or less) made of a composite film of an aluminum layer 2 made of an aluminum foil of g / m ² / 24h and a polyester resin layer 3 made of a polyester resin film having a thickness of 25 μm is shown. 1
Is attached to an inorganic fiber material 4 made of a glass wool corrugated heat insulating plate (JIS A 9504) having a thickness of 50 mm via an unillustrated adhesive so that the aluminum layer 2 is on the outside, thereby forming a heat insulating material 10 for piping. is there.

FIG. 2 illustrates how to use it.
This shows a state of being applied to the steel pipe for cold water 20. The plate-shaped heat insulating material for piping 10 of the present invention is wound along the outer periphery of the steel pipe 20 for cold water, and the butt end portion and the gap between the pipe insulating material and the adjacent heat insulating material for piping are shown. A tape 30 having a moisture-proof effect was attached to the joint.

When the cold water steel pipe was placed in the cold water steel pipe in an atmosphere at a temperature of 30 ° C. and a humidity of 90% RH, and cold water at a temperature of 5 ° C. was flowed into the cold water steel pipe, no dew condensation was observed on the surface of the cold water steel pipe. I couldn't.

[0014]

As described above, according to the heat insulating material for piping of the present invention, the skin material made of the composite film composed of the aluminum layer and the polyester resin layer prevents the penetration of moisture into the inorganic fiber heat insulating material, Dew condensation on the tube surface can be completely prevented. Also, due to the flexibility of the inorganic fiber material, it can be applied to a pipe having a certain diameter.

[Brief description of the drawings]

FIG. 1 is a perspective view of one embodiment of a heat insulating material for piping of the present invention.

FIG. 2 is a perspective view showing a construction state of the heat insulating material for piping.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Skin material 2 Aluminum layer 3 Polyester resin layer 4 Inorganic fiber material 10 Insulation material for piping 20 Steel pipe for cold water 30 Tape

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kenji Kawabe 415 Sakunodani, Yuki-shi, Ibaraki Pref.

Claims (3)

[Claims] 1. A heat insulating material for piping, wherein a skin material comprising a composite film of an aluminum layer and a polyester resin layer is coated on an inorganic fiber material such that the aluminum layer is on the outside. 2. The heat insulating material for piping according to claim 1, wherein the thickness of the polyester resin film is 150 μm or less. 3. A corrugated inorganic fiber plate wherein the inorganic fiber material is oriented in a layered manner with inorganic fibers to which a binder resin is adhered, and the laminated inorganic fiber web is folded in a zigzag manner to orient the inorganic fibers in a vertical direction. The heat insulating material for piping according to claim 1 or 2, wherein: