JPS58145438A - Manufacture of heat insulating board for building - 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 The present invention relates to a method for producing a thermal insulating material for buildings (hereinafter simply referred to as a thermal insulating board) useful as an exterior material for buildings and objects.

In particular, the present invention relates to a heat insulating board that can be used as a fireproof structural member, has excellent productivity, and can also reduce costs.

Conventional manufacturing methods for this type of insulation board include distributing refractories uniformly throughout the foam structure of the core insulation material, layering flat sheet materials on top of the foam, and then forming and curing them in a curing oven, etc. was taken. However, when a heat insulating board is manufactured by this type of manufacturing method, there are disadvantages in that the following points are lacking. That is, (1) It is difficult to uniformly mix and discharge the foamed synthetic resin and refractory material, which are the raw materials for the heat insulating core material, and furthermore, the foamed structure becomes rough. ■If the foam structure of the insulation core material is damaged, the expansion ratio and mechanical strength will decrease. ■■、■
This increases the amount of foamed synthetic resin used, leading to an increase in costs. - Foamed synthetic resin leaks from the side edge of the sheet material during foam molding, staining the back surface of the insulation board and the mold material.

In other words, when a flat sheet is formed into a foam, the foaming pressure of the foam is used to mold the sheet to fit the mold material, so even a slight deviation will cause the above-mentioned results. (2) In particular, in the case of a cross-sectional shape that has a bulge protruding from the recess of the metal hoop material, the desired cross-sectional shape is very often not achieved because the method involves simultaneously removing the side edges of the female part and releasing the shape. This is because the synthetic resin raw material in the process of foaming comes into direct contact with the mold material. That is, this is because a gap occurs between the current temperature of the mold material being heated and the temperature of the raw material that is being foamed.

In order to eliminate such drawbacks, the present invention laminates fire-resistant aggregate-containing foamed synthetic resin raw material only in the female connection structure part, which is the weakest point in the fireproof structure, and uses foamed synthetic resin alone in the other parts. At the same time, the formed sheet-like material is laminated on the raw material, and the metal hoop material and the sheet-like material are fixed by the self-adhesive property during foaming of the foamed synthetic resin raw material. The present invention proposes a method for manufacturing a heat insulating board that has fire resistance, heat insulation properties, and mechanical strength, and that does not contaminate the heat insulating board or equipment due to resin leaking outside due to the foaming pressure during manufacturing.

An embodiment of the method for manufacturing a heat insulating board according to the present invention will be described in detail below with reference to the drawings.

FIGS. 1(a) and 1(b) are a side view and a plan view schematically showing an apparatus for carrying out the above manufacturing method, in which 1 is a band-shaped metal hoop material (hereinafter simply referred to as hoop material) which is connected to an uncoiler 2. The hoop material is continuously fed out and fed to the forming machine 3, and is bent into the cross-sectional shape shown in FIG. 2(a). In other words, FIG. A bent portion 4.5 of a male and female type connection structure is provided, and a recessed portion 6 is formed between the bent portions 4.5. This hoop material 1 is fed to a preheater 7, where it is heated to about 40 to 90 C and transported to the next process.

Note that the preheater 7 may be powered by, for example, electricity, far infrared rays, gas,
Uses high frequency, etc. 8 is a foamed synthetic resin raw material supply device;
For example, it consists of a nozzle.

A foamed synthetic resin raw material 9 is supplied to the recess 6 as shown in FIG. , resin for phenol foam, resin for polyimide foam, etc.

1O is a so-called aggregate-containing foamed synthetic resin raw material 13, which is obtained by mixing fire-resistant aggregate 11 and foamed synthetic resin 12 in a mixer, on the back surface 5a of the bent portion 5 of the hoop material 1 as shown in FIG. It is preferable that the discharge range S is not the entire back surface of the back surface 5a, but an area that is about 2 to 5111 degrees inward from the tip. This is to facilitate the installation work and to provide a safety margin so that a part of the foamed synthetic resin raw material 12 does not go around to the surface 5C via the tip 5b of the bent part 5. The aggregate 11 suppresses its fluidity and helps prevent the raw material 12 from leaking to the outside.

Specific examples of the fire-resistant aggregate 11 include pearlite grains, vermiculite, shirasu balloons, alumina bulbs, glass balloons, etc., and the size thereof is approximately 1 to 1.
A mold 014 having a diameter of 100φ is formed by upper and lower mold conveyors 15 and 16 as shown in FIG. 3, and the interval H between the molds corresponds to the thickness t of the heat insulating plate.

The mold 14 rotates in the direction of the arrow, gradually dissolves at the exit, and forms again at the entrance.
7 is a cube onipun, which is a device that surrounds the upper and lower mold conveyors 15 and 16, which are both mold members, and can heat the mold to about 50 to 100 C, and is mainly useful for heating the mold material and curing the foamed synthetic resin. . Further, although not shown, a dehumidifying device can be added to the cure oven 17 and operated depending on the raw material. 1B is a sheet-like material, such as kraft paper, asbestos paper, asphalt felt, or non-woven fabric.
Seeds or two or more types are laminated, these sheet-like materials are waterproofed, or metal foil (Al, Cu, Fe
, Sn) are laminated.

This is attached to an uncoiler 19, and is further fed to a sheet forming machine 21 via a guide roller 20. The sheet-like material formed by the sheet-like material forming machine 21 as shown in FIG. 2(d) is fed to the mold 14 while being gradually laminated in a predetermined area on the back surface of the hoop material 1.

The sheet-like material 18 acts as a material for preventing contact between the mold material and the foamed synthetic resin (C17411 paper), and also has the function of preventing the foamed synthetic resin 9.12 from leaking out of a predetermined area. Reference numeral 22 is a cutter for cutting a heat insulating plate fed from the outlet of the curing oven 16 and having a cross section as shown in FIG. 4 into a predetermined size. As a result, as shown in FIG. 4, the heat insulating board has a foam 23 portion made only of foamed synthetic resin and a foam containing aggregate, a so-called fireproof layer 24, which are integrally formed.
Moreover, the hoop material 1 and the sheet-like material 1B are stuck together due to their self-adhesive properties during foaming of the foamed synthetic resin raw material.

What has been described above is only one example of the method for manufacturing a heat insulating board according to the present invention, and as shown in FIG. It is also possible to use an aggregate 11a filled with a foamed fire retardant 25 that releases water and forms an inorganic foam layer.

Furthermore, as shown in FIG. 6, it is also possible to form a double width and provide a finishing machine for finishing the tongue piece in the final process, that is, in the process following the traveling cutter. Alternatively, the sheet-like material 18 may be fed into the mold 14 while the side wall 18a is inserted with a shoe. In addition, in FIG. 1(a), a set of embossing rolls is inserted in the middle of the forming machine 3, for example, immediately after forming into a U shape, and an embossing roll 26 is placed between the outlet of the forming machine 3 and the preheater 7. It is also possible to set

As described above, the method for manufacturing a heat insulating board according to the present invention has the major feature that a large-resistant layer and a highly heat-insulating heat insulating layer can be formed on the hoop material in the same line very easily, at low cost, and efficiently. There is. In addition, since the molded hoop material 1 and the sheet-like material 18 form a core mold, and the foamed synthetic resin is foamed inside, there is no leakage of the resin to the outside.Furthermore, the fireproof structure of the heat insulating board It has the characteristic that the joints, which are the weak points in the hoop material, are greatly strengthened by the fireproof layer.In addition, the foamed synthetic resin alone is first discharged into the concave part of the hoop material, gradually filling the turning part 6, and then the bone Since the material-containing foamed synthetic resin is locally laminated on the bent portion 5, it is possible to effectively form a heat insulating layer, and it is also easy to integrate with the fireproof layer, and it has the characteristics that there are no under-walled areas between the one-sided materials. be.

[Brief explanation of drawings]

FIGS. 1(a) and 1(b) are a side view and a plan view schematically showing an apparatus for carrying out the method for manufacturing a thermal insulation board for buildings according to the present invention, and FIGS. 2(a) to td) are FIGS. 3 is a sectional view taken along the line 1-1 in FIG. and FIG. 6 are explanatory diagrams showing other embodiments. 101. Metal hoop material, 300. Molding machine, e, 1
2. , 0 foamed synthetic resin, 21. ,, type, 231. , insulation layer, 2401. Fireproof layer. Figure 2 (a) Figure 3 Figure 4 Giant 4

Claims (1)

[Claims] (1) Continuously supplied band-shaped metal hoop material is formed into a concave shape, and male connection structures are provided at both ends of the material.
Then, a bent part of the female type connection structure is provided, first, a foamed synthetic resin raw material is injected into the concave part between the bent parts, and then a foamed synthetic resin material containing aggregate is placed on the back side of the bent part, which will become the female type connected part structure. When the resin raw materials are laminated and both raw materials are in the middle of foaming, the back surface from the bending end of the female connecting structure to at least the starting end of the male connecting structure is formed into a "-C" shape. 1. A method for producing a heat insulating board for construction, which comprises covering the board with a foamed material and fixing it together by the self-adhesive properties of a foamed synthetic resin during foaming.