JPH0788985A - Thermal insulating material and manufacture thereof - Google Patents

Abstract

PURPOSE:To obtain a thermal insulating material which can be cut in a proper length in manufacturing or construction and never exposing the thermal insulating material from its cut end, by a method wherein the thermal insulating material is sealed between both of covering materials, partitioned by respective jointing parts and provided with perforations for cutting both covering materials at the center of respective jointing parts across the whole width of the covering materials. CONSTITUTION:A thermal insulating material 1 is formed by pinching a predetermined amount of thermal insulating material 4, consisting of glass fibers and the like, with flexible belt type sheets 2, 3 of synthetic resin or the like. Both sheets 2, 3 are connected mutually at both side rims 7 thereof and connecting parts 6, partitioning respective thermal insulating materials 4 from each other, are provided. Further, the connecting parts 6 are provided with perforations 5 along the connecting parts 6. The perforation 5 is provided to cut both of the sheets 2, 3 across the widthwise sides of both sheets and the thermal insulating material 1 can be cut by pulling it into the lengthwise direction thereof without employing any tool.

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 in which a heat insulating material is sandwiched between two sheet-like covering materials and a method for producing the same.

[0002]

2. Description of the Related Art Insulating materials made of inorganic fibers and the like have a sheet-like shape because they are uncomfortable when they are bare and do not feel good to the touch, so that they are easy to handle even with bare hands, or the heat insulation properties deteriorate due to dew condensation. It is often used by being covered with a covering material, for example, in Japanese Utility Model Publication No. Sho 61-373.
As disclosed in Japanese Patent Publication No. 20, a heat insulating material formed in a strip shape continuous in one direction is sandwiched between two strip-shaped covering materials from above and below, and both side edges of the covering material are joined to each other in the longitudinal direction. A continuous heat insulating material is known.

[0003]

The above conventional heat insulating material is
Since the heat insulating material is continuous in the longitudinal direction, a separate cutting device is required in the manufacturing process, and a cutting tool such as scissors is also required for cutting to a required length during construction. Further, there arises a problem that the heat insulating material inside is exposed from the cut cut in this way, and the heat insulating material is frayed and goes out. Therefore, it is an object of the present invention to provide a heat insulating material that can be easily cut to an appropriate length during a manufacturing process or construction, and the heat insulating material inside is not exposed from the cut edge, and a manufacturing method thereof.

[0004]

In order to achieve the above-mentioned object, the invention according to claim 1 is to provide a joint portion for joining two strip-shaped covering materials to each other over the entire width of the covering material in the longitudinal direction of the covering material. A plurality of perforations are provided at predetermined intervals along the direction, and a heat insulating material is enclosed between both coating materials that are separated by each joint, and a perforation that intermittently cuts both coating materials is provided at the center of each joint. It is characterized in that it is provided over the entire width of the covering material. According to the invention of claim 2, the two side edges of the two covering materials of the invention of claim 1 are joined to each other, and the heat insulating material sandwiched between the two covering materials is formed by two adjacent joint parts and both side edges. In addition to sealing from four sides, at least one of both side edges is provided with an air vent that connects the heat insulating material side and the outside.
On the other hand, the invention of claim 3 is the method for manufacturing a heat insulating material according to claim 1 or 2, characterized in that the formation of the joint portion and the formation of perforations are performed at the same time.

[0005]

[Operation] By separating the heat insulating material by the joint,
If you cut the heat insulating material at the joint, you can easily cut it to an appropriate length during the manufacturing process or construction, and because the product size can be flexibly handled, you can use it without product loss, and you can cut the heat insulating material It is not exposed from the outside, and by providing a perforation at the center of the joint, it is easy to pull the heat insulating material in the longitudinal direction without using a separate cutting device or tool without breaking the coating on the heat insulating material. Can be cut. Even if the heat insulating material is compressed by providing the air vent, the covering material does not burst under the pressure of air contained in the heat insulating material. Further, by simultaneously forming the joint portion and the perforation, the manufacturing process can be simplified and the perforation can be accurately formed in the joint portion.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. Referring to FIG. 1, 1 is a heat insulating material according to the present invention,
Two flexible belt-shaped sheets 2 and 3 made of synthetic resin or the like
Is formed by sandwiching a predetermined amount of heat insulating material 4 made of glass fiber or the like. The two sheets 2 and 3 are connected to each other at both side edges 7, and a joint portion 6 for separating the heat insulating materials 4 from each other is provided. Further, the joint portion 6 is provided with perforations 5 along the joint portion 6. The perforations 5 are for intermittently cutting both the sheets 2 and 3 over both the sheets 2 and 3. By pulling the heat insulating material 1 in the longitudinal direction, heat insulation is achieved without using tools such as scissors or a knife. This is for cutting the material 1, and there is no risk of breaking the coating on the heat insulating material 4 by cutting at the perforations 5. An air vent 2a is provided on one side of the sheet 2 to connect the heat insulating material 4 side and the outside, and when the heat insulating material 1 is used in a compressed state, the air contained in the heat insulating material 4 is exhausted to the outside. The sheets 2 and 3 are prevented from being broken by the pressure of the air.

Next, a method of manufacturing the heat insulating material 1 will be described. Referring to FIG. 2, reference numeral 10 denotes a hopper for storing the defibrated glass wool, and a rotary blade 11 for dropping the defibrated glass wool downward without being clogged is attached above the inside thereof. Also, the hopper 10
A blower 12 is attached to the lower part of the so that the filling rate of the glass fibers dropped on the mesh plate 13 becomes constant. The hopper 10 is provided on the upper surface of the mesh plate 13 with an extruding rod 14 on the rear side and an opening / closing door 15 on the front side, and glass fibers accumulated on the mesh plate 13 at a constant filling rate are fed from the opening / closing door 15 to the front side. I pushed it to.

In front of the hopper 10, the seat 2 is placed from above.
A roll 20 for supplying the sheet and a roll 21 for supplying the sheet 3 from below are provided, and when the glass fiber is pushed out from the opening / closing door 15 of the hopper 10 as described above, the glass fiber is inserted between the two sheets 2 and 3. It By the way, both the sheets 2 and 3 are high-frequency welded to each other at both side edges by the high-frequency roller 40 that sandwiches only the both side edges, and are welded by being welded by the welders 50 and 51 across the entire width direction in front of them. Molded. Therefore, when the welding is completed by the welding devices 50 and 51, the welding device 50 is raised and then the extrusion rod 1
4 is moved forward and the glass fibers are pushed between the bag-shaped sheets 2 and 3 to move the sheets 2 and 3 forward, and when the glass fibers pass through the positions of the welders 50 and 51, an extruding rod. Presser plate 6 that can be raised and lowered while retracting 14
The welder 50 is lowered with 0 being lowered to adjust the shape, and the sheets 2 and 3 are joined again over the entire width direction. After the glass fiber is thus sealed from the left, right, front and back, it is sent forward by the conveyor 70.

By the way, the details of the welders 50 and 51 are shown in FIG.
Further, as shown in FIG. 4, welding parts 52 are provided on both side edges of the lower surface of the welding device 50, and sawtooth-shaped cutting teeth 53 are attached between the welding parts 52. Part of the tip of the cutting tooth 53 is the joint portion 5
It is set so as to project downward from 2 and the welder 5
By lowering 0, the sheets 2 and 3 are joined to each other to form the joint portion 6 and the perforation 5 is formed at the center of the joint portion 6. As a result, when the heat insulating material 1 is wound up to a predetermined length, the rollers 20 and 21 are braked to apply tension to the sheets 20 and 21, so that the heat insulating material 1 can be cut at the perforations 5, and a separate cutting device can be used. Need not be provided. Incidentally, 54 is a rubber so that the perforations 5 are easily formed.

By the way, in the above embodiment, the sheets 2 and 3 are joined to each other by high frequency welding, but they may be joined to each other by heat welding or adhesive bonding. Also, both edges 7
Was welded continuously by the high frequency roller 40, but the high frequency roller 40 may be formed in a gear shape so that both side edges 7 are intermittently joined. In this case, the air vent 2a is omitted. can do. Sheets 2 and 3
If at least one of the above is made a breathable sheet, it means that the entire breathable sheet is provided with an air vent, and even if both side edges 7 are continuously joined, it is not necessary to open the air vent 2a as in the above embodiment.

In the above embodiment, each time the covering material is formed into a bag shape, the insulating material made of defibrated glass wool is enclosed in the covering material formed into a bag shape. Is not limited to defibrated ones, and plate-shaped ones and the like are not particularly limited in kind. When a plate-shaped heat insulating material or the like is used as the heat insulating material, the heat insulating material may be enclosed in the covering material at the same time when the covering material is formed into a bag shape.

When the side edges 7 of the sheets 2 and 3 are not joined by welding or the like, it may be appropriately treated so that the heat insulating material 4 may be exposed from the side edges 7 of the sheets 2 and 3.

[0013]

As is apparent from the above description, according to the present invention, it is possible to easily cut to an appropriate length during the manufacturing process or construction, and the product size can be flexibly dealt with, resulting in a loss of the product. It is possible to provide a heat insulating material that can be used without construction, and in which the heat insulating material inside is not exposed from the cut end, and a manufacturing method thereof. In addition, even if the heat insulating material is compressed and used, the covering material does not burst and break. Further, according to the manufacturing method of the present invention, the formation of the joint portion and the formation of the perforations are performed at the same time, so that the manufacturing process can be simplified and the perforations can be accurately formed in the joint portion.

[Brief description of drawings]

FIG. 1 is a partially cutaway cross-sectional perspective view of a heat insulating material according to an embodiment of the present invention.

FIG. 2 is a schematic view showing an apparatus configuration for carrying out the manufacturing method of the present invention.

FIG. 3 is a partially enlarged view showing details of the welder.

FIG. 4 is a view on arrow IV-IV in FIG.

[Explanation of symbols]

 1 heat insulating material 2 coating material 3 coating material 4 heat insulating material 5 perforations 6 joints 7 side edges 2a air vent 10 hopper

Claims (3)

[Claims] 1. A plurality of joint portions for joining two strip-shaped covering materials to each other over the entire width of the covering material are provided at predetermined intervals along the longitudinal direction of the covering material, and are separated by each joint portion. A heat insulating material, wherein a heat insulating material is enclosed between both covering materials, and perforations for intermittently cutting both covering materials are provided at the center of each joint over the entire width of the covering material. 2. The two edges of the two covering materials are joined to each other, and the heat insulating material sandwiched between the two covering materials is sealed from four sides by two adjoining joints and both edges, and at least both sides. The heat insulating material according to claim 1, wherein one of the edges is provided with an air vent that connects the heat insulating material side and the outside. 3. The method for producing a heat insulating material according to claim 1, wherein the joint portion and the perforation are formed at the same time.