JPS62135360A - Manufacture of heat insulating material for metallic folded block - 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] [Industrial application field] The present invention relates to a method for manufacturing a heat insulating material for metal folding plates.

[Conventional technology]

Conventionally, metal folding plates with heat insulation properties are manufactured by laminating a heat insulating material on a metal plate and then bending it.
As insulation materials, glass ta fiber, asbestos, mats such as 6-layer mats, polyethylene foam sheets, etc. are used.

However, the above-mentioned heat insulating material has a drawback that its strength is low, and when it is bent, it is cut at the cut portion π, and the trough portion is pressed by the bent portions on both sides, causing bulges and peeling.

In order to eliminate the above drawbacks, a sheet-like material made of glass fibers and right rear fa fibers was processed into needle patches, and then tatted with adhesive.
Insulating material for metal folding plates with partially bonded IJI
No. 135189/1989) has been proposed.

However, the above-mentioned heat insulating materials have the disadvantage that the π glass fibers break during the bending process, causing glass powder to scatter and worsening the working environment.Furthermore, when metal folded plates are used as roofing materials, glass II group water retention is poor. Since there is almost no condensation, there is a drawback that water condensation falls inside the room.

[Problem that the invention seeks to solve]

In view of the above drawbacks, the present invention has been developed so that it will not be cut during bending, will not bulge or peel, will not scatter glass powder, and will have high water retention when used as a roofing material, allowing condensed water to fall indoors. It is an object of the present invention to provide a method for manufacturing a heat insulating material for metal folding plates that does not require the following steps.

[Failure to solve the problem]

Any glass fiber can be used as the glass fiber used in the present invention, but it is preferable that it is bulky when made into a sheet, has high strength, and is easy to arrange in the thickness direction. Fibers made by a melt method, a marble melt method, etc. are preferred, and alkali-free glass (E glass) is preferred as the raw material glass.

Further, the diameter of the glass fiber is preferably 5 to 16μ, more preferably #i8 to 12μ, and the length is 30 to 1
Preferably, it is 501 m.

The water-soluble organic fiber used in the present invention is used as an adhesive to bond glass fibers during hot water treatment and also provides water retention properties, so it has the property of dissolving in hot water of 60 to 100°C and swelling in water at room temperature. For example, water-soluble vinylon fibers are preferably used.

Any water-insoluble nucleated fibers can be used as the water-insoluble fibers used in End 1, such as natural a&ys fibers such as cotton, linen, and silk; regenerated fibers such as rayon; Semi-synthetic fibers such as acetate, polyethylene, polypropylene, vinylon, polyvinyl chloride, polyvinylidene chloride, polyacrylonitrile, polycrethane, boria.

Can be used with synthetic fibers such as mido.

Since the top and water-soluble and water-insoluble fibers are made into a nonwoven fabric and are integrated by needle patch processing with a sheet-like material mainly made of glass fibers, the diameter rri is preferably 1 to 10 deniers, more preferably. is 15-5
denier and preferably has a length Fi of 30 to 150 feet.

Although the sheet-like material in the present invention is mainly composed of the above-mentioned glass fibers, it is preferable that one rooted fiber is mixed therein in order to provide strength against forces such as compression and shearing.

Examples of the above-mentioned organic fibers include the above-mentioned water-soluble organic fibers and water-insoluble organic fibers that are geothermally fusible.

The above-mentioned heat-fusible fibers include fibers in which a hot-melt adhesive is laminated around the organic fibers, fibers in which organic fibers are dispersed in a sea-island shape in a hot-melt adhesive, and fibers that are heat-fusible with organic fibers. It is preferable that composite fibers such as fibers made of laminated fibers have a diameter of 1 to 10 deniers,
More preferably, it is 15 to 57'' neal, and the length F
It is preferable that it is iso~1501nl.

If the amount of organic fiber added is too large, it will become flammable, and if it is too small, the strength will be reduced. Therefore, it is preferable that 60 to 95% by weight of glass fiber and 14,140 to 5% by weight of organic fiber are mixed, and more preferably. Glass fiber 70-90% by weight and organic fill! It is 30 to 10% by weight.

Any method known in the art may be used to manufacture the above-mentioned sheet material mainly made of glass fibers. For example, the glass fibers are cut into a predetermined length, defibrated, and then collected on a dyeing loom. A method of forming it into a sheet is adopted.

The non-woven fabric used in the present invention is made of the above-mentioned water-soluble organic fibers and water-insoluble organic fibers, and is layered with the above-mentioned sheet-like material Ka and integrated by needle patch processing. It is preferable that the amount of water-soluble organic fiber in the nonwoven fabric is 8 to 402/- because the effect of letting fluff age and the effect of preventing scattering of glass powder during molding decreases. 30 to 70% by weight of the nonwoven fabric, as the adhesion to the nonwoven fabric decreases, reducing the effect of preventing glass powder from scattering, mechanical strength, and water retention. preferable.

In zero-start Fg+, the above sheet-like material and nonwoven fabric are layered on top and integrated by needle patch processing from the nonwoven fabric side, but it is preferable that the needle patch processing is performed with felt needles at 15 to 40 points, At this time, it is preferable that the tip of the felt needle penetrates the sheet-like material and protrudes by 5 to 1 oly.

The nonwoven fabric may be laminated on at least one side of the sheet-like material, but it may be laminated on both sides, and needle/pliers processing may be performed on both sides.

In the present invention, the laminate obtained after needle patch processing and integration is treated with hot water, but the hot water treatment dissolves and adheres the surface of the water-soluble organic fibers entangled with the glass fibers. For example, methods include spraying hot water or steam at 80°C or higher, and immersing in hot water. However, in order to improve adhesion, spraying with water or hot water and then heating with a heated roll may be used. Pressure is preferred.

The surface temperature of the rolls is preferably 100 to 200°C, and the roll interval is preferably 20 to 60% of the thickness of the laminate before pressing.

〔Effect of the invention〕

The structure of the manufacturing method of the heat insulating material for metal folding plates of the present invention is as described above. Because it is bonded with water-soluble organic fibers, there is little fuzz on the glass fibers, and it feels good to the touch.It is easy to handle, bulky, and has excellent heat insulation properties. It has high bending strength, making it difficult to separate the layers. Therefore, when the metal plate is laminated and then bent, the bent part will not be cut, bulges or peeling will not occur in the valley, and there is no charge of glass powder at that time, resulting in a good working environment. It has good water retention properties, and when used for roofing materials, there is no chance of condensed water falling into the room.

〔Example〕

Next, the zero firing machine 1 will be explained with reference to an embodiment.

Example Long glass fiber (E glass, diameter 9μ, fiber length 50-80
11) 90 parts by weight and 10 parts by weight of l-diester heat-fusible fiber (diameter 4 denier, e, slenderness 51*x) are mixed,
A sheet-like product with a thickness of 15 scratches and a weight of 530 pounds/g was produced using a Kuenopu manufacturing machine.

Water-soluble vinylon fiber (diameter 37''' Neil, fiber length 511131) 4f/lr was coated on one side of the obtained sheet-like material.
i and polyester fiber (diameter 4 denier, fiber length 5tm)
) 81 layers of a non-woven fabric made of 6 g/g/g, and on the other side, a non-woven fabric made of the vinylon fiber 627 door and polyester fiber (diameter 4 denier, fiber length 51 ff) 4/- was laminated,
Needle punching was performed from both sides using a No. 19 felt needle under the conditions of a needle penetration length of 9 mm and a needle density of 25 points/cd to obtain an integrated laminate with a thickness of 511 M.

The obtained laminate was supplied to a vintil roll having a diameter of 250 mm, a surface temperature of 160 °C, and a clearance of 3 IlH while spraying water at a rate of 40 y/-, heated and pressurized, and then heated and pressurized at 17 mm.
It was supplied to a hot air dryer at 0°C and heat-treated for 10 minutes to give a thickness of 5mm and an apparent density of 0.11? / Obtained insulation for the door.

The interlayer peel strength of the obtained wR thermal material Vi1050P730
It was a hood (pulling speed 300 mm/1.).

Also, cut the above heat insulating material to make 10 x 10 x 10 (
A block of LM) was made, immersed in water at room temperature for 24 hours, taken out, placed on a net, and when water stopped dripping, the amount of water retained was measured, and it was 606% (606% of the original).
% of water is contained. )Met. In addition, when the obtained tFr thermal material was attached to a colored galvanized iron plate with a thickness of 0.8 mm using a neoprene adhesive and a folded plate was formed into a goose-type folding plate using a folding plate making machine, the insulation material was cut at the bent part. A metal folded plate was obtained without any cracking, blistering in the valleys, or peeling. When the obtained folded plate was subjected to a nonflammability test according to the Ministry of Construction Notification No. 1828 Test Method, it was found to have true twistability.

Comparative Example Polyester fibers (diameter 4 denier, fiber [51ffff) 102/
A nonwoven fabric made of a door was laminated and subjected to needle pliers processing and heat treatment in the same manner as in the examples to obtain a heat insulating material. The physical properties of the obtained heat insulating material were measured in the same manner as in the examples, and the interlayer II m strength n5509/
30+U width Terror 6, water retention amount was 530%.

Claims (1)

[Claims] 1. A sheet-like material mainly made of glass fibers and a nonwoven fabric made of water-soluble organic fibers and water-insoluble organic fibers are laminated, and after being integrated by needle patch processing from the nonwoven fabric side, hot water treatment is performed. A method for producing a heat insulating material for a metal folding plate, the method comprising: processing. 2. The method for manufacturing a heat insulating material for metal folding plates according to claim 1, wherein the sheet-like material comprises 60 to 95% by weight of glass fibers and 40 to 50% by weight of organic fibers.