JPH04325210A - Manufacture of heat insulating material - Google Patents

Abstract

PURPOSE:To prevent blisters that are produced by the foaming pressure of a synthetic resin foaming body on the front side of a trapezoidal ridge- processing metal hoop material on the lower surface in the case of manufacturing a heat insulating board by interposing a synthetic resin foaming material between a side edge-processing metal hoop material on the upper surface and a trapezoidal ridge-processing metal hoop material on the lower surface. CONSTITUTION:The manufacture of an insulating material is characterized such that at the time of manufacturing a heat insulating board by injection- dispersing synthetic resin stirring liquid between a side edge-processing metal hoop 5A on the upper surface and a trapezoidal ridge-processing metal hoop material 4 on the lower surface, while the metal hoop material on the upper surface and the metal hoop material on the lower surface are compressed at 50%-90% of a predetermined thickness into thickness control rollers 9A immediately before being introduced into upper and lower endless conveyors with a predetermined thickness, they are executed to 80% of the foaming completion and then transported onto the upper and lower endless conveyors.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a method for producing heat insulating materials used for roofing members, wall members, and flooring materials in buildings.

0002

[Prior Art] Conventionally, as seen in Japanese Patent Publication No. 63-63367, a supporting convex portion for supporting the bottom of the valley on the side of the convex veins was provided on the outer periphery of a conveyor for conveying the metal hoop material on which the convex veins were formed. There is a way to set it up. In other words, it was manufactured by press-welding upper and lower metal hoops containing synthetic resin foam between an endless conveyor and upper and lower conveyors of an endless conveyor provided with support protrusions that support the bottoms of the sides of the convex veins.

0003

The concave portions and convex portions on the front side of the trapezoidal metal hoop material swell due to the foaming pressure and internal heat generation of the synthetic resin foam. In order to prevent this, in Japanese Patent Publication No. 63-63367, a support convex part is provided on the outer periphery of the conveyor that conveys the metal hoop material on which the convex veins are formed, to support the valley bottoms on the sides of the convex veins. If the insulation material is thin, the method described in Japanese Patent Publication No. 63-63367 can also solve the problem of concave deformation on the front side of the metal hoop material, but if the insulation material is thick, that is, the foaming pressure and internal heat generation temperature are high, trapezoidal vein processing is used. The concave portions and convex portions of the metal hoop material bulge, and the concave portion press-contact support portion in contact with the trapezoidally processed metal hoop material applies a large pressure to the conveyor, placing an excessive load on the driving force of the conveyor. This causes local deformation of the conveyor.

0004

[Means for Solving the Problems] As a result of intensive research to solve the above problems, we have arrived at the present invention. That is, the present invention continuously forms the upper metal hoop material, continuously supplies the lower metal hoop material, continuously processes and forms trapezoidal veins using a trapezoidal vein forming roller, and then forms the upper metal hoop material. The lower metal hoop material with the trapezoidal veins formed thereon and the upper metal hoop material are conveyed vertically facing each other by being continuously processed and supplied, and the concave portions and convexities on the back side of the trapezoidal veins of the lower metal hoop material are removed. In a method of manufacturing a heat insulating material by injecting and scattering a synthetic resin foam stock solution onto the top of the part using a synthetic resin liquid stirrer, the synthetic resin foam stock solution is poured onto the concave portions and convex portions on the back side of the trapezoidal veins of the lower metal hoop material. After pouring and spreading, the upper metal hoop material and the lower metal hoop material are conveyed facing each other, and the thickness is temporarily increased from 50% to 90% of the predetermined thickness.Thickness control rollers are placed above and below to complete foaming to 80%. This method of manufacturing a heat insulating material is characterized in that the heat insulating material is pressed to a predetermined thickness and immediately transferred between an endless conveyor on the upper surface and an endless conveyor on the lower surface, which are set to a predetermined thickness. That is, if the concavity on the front side of the trapezoidal processed metal hoop material on the lower surface is shallow and hardly bulges due to the foaming pressure of the synthetic resin foaming stock solution, or if the lower surface trapezoidal processed metal hoop material is thick and the synthetic resin foaming stock solution is If no bulging occurs due to the foaming pressure, use a thickness control roller of the same thickness as the roller that presses the metal hoop material on the top surface and the roller that presses the trapezoidal veined metal hoop material on the bottom surface. On the other hand, if the concavity on the front side of the trapezoidal veined metal hoop material on the lower surface is deep, or if the metal hoop material is thin and bulges due to the foaming pressure of the synthetic resin foaming stock solution, the thickness control Among the rollers, we have established a method for manufacturing a heat insulating material that uses uneven rollers so that they can contact, press, and slide against the recesses on the front side of the trapezoidal vein-processed metal hoop material on the lower surface to prevent the recesses from bulging. . In other words, the present invention is a method for preventing the bulge of the recessed portion without placing any rollers on the endless conveyor below. The present invention will be explained below with reference to the drawings.

FIG. 1 is a cross-sectional view showing the expansion of a concave portion of a heat insulating material due to foaming pressure according to a conventional manufacturing method. The metal hoop material 5A whose side edges on the upper surface have been processed is pressed against the endless conveyor 2 on the upper surface, so that the surface thereof is flat. However, the convex portion 4 on the front side of the metal hoop material 4A processed with trapezoidal veins on the lower surface
Since C is in pressure contact with the endless conveyor 1 on the lower surface, it is flat, but the concave portion 4B is "swelled" due to the foaming pressure of the injected synthetic resin stirring liquid.

FIG. 2 is an example of a schematic cross-sectional view showing the method of manufacturing a heat insulating material according to the present invention. The metal hoop material 5 constituting the upper surface has both ends processed by a plurality of vertically opposed pressing rollers 6, and the lower metal hoop material 4 forming the lower surface has a trapezoidal shape. The trapezoidal vein-processed metal hoop material 4A is processed into irregularities by the vein roller 7, and a synthetic resin foaming stock solution is injected and dispersed from the synthetic resin liquid stirrer 8 onto the concave and convex portions on the back side to control the thickness of the bottom surface. Convey to roller 9A or 9B. The position of the upper and lower rollers increases the thickness from 50% of the predetermined thickness of the heat insulating material to 90% of the predetermined thickness. The laying distance of the thickness control roller is preferably 80% from 75% to 85% of foaming completion. For example, if the foaming completion time (tack free time) is 1 minute at a speed of 10 meters per minute, the distance that the thickness control roller is laid is 8 minutes.
It becomes rice. The endless conveyor 2 on the upper surface and the endless conveyor 1 on the lower surface are set to have a predetermined thickness of the heat insulating material, and the metal hoop material on the upper surface that has passed through the thickness control roller and the trapezoidal veined metal hoop material on the lower surface face each other on the upper and lower surfaces. is transferred to an endless conveyor. When the foam recovers to a predetermined thickness, the cell structure of the synthetic resin foam grows in the longitudinal direction, increasing its compressive strength. The insulation material passed between the upper and lower endless conveyors is cut by cutting machine 1.
0, it is cut to a predetermined length. As the synthetic resin foaming stock solution, rigid urethane foam or phenol foam is used.

FIG. 3 shows A- of the thickness control roller portion in FIG.
This is an example of the A′ cross-sectional view, where the swelling of the concave portion 4B on the front side of the lower surface trapezoidal vein-processed metal hoop material 4A does not occur due to the foaming pressure of the synthetic resin foaming stock solution, and the side edge processed metal hoop material 5A on the upper surface is It shows the thickness control roller 9A that presses into contact with the bottom thickness control roller 9A that comes into contact with the convex portion 4C on the front side of the trapezoidal vein-processed metal hoop material 4A on the bottom surface.

FIG. 4 shows A- of the thickness control roller portion in FIG.
Another example of the A′ cross-sectional view shows an uneven roller 9B of the thickness control roller on the lower surface in order to prevent swelling due to foaming pressure on the concave portion 4B on the front side of the lower trapezoidal veined metal hoop material 4A of the synthetic resin foaming stock solution. is inscribed in the front concave portion 4B of the lower trapezoidal vein-processed metal hoop material, and shows the state of pressure contact, sliding, and conveyance.

FIG. 5 shows the upper and lower endless conveyors shown in FIG.
´In the cross-sectional view, the lower surface of the insulation material A has trapezoidal vein-processed metal hoop material 4
This shows a state in which the concave portion 4B on the front side of A has no bulge. A prevention block 3 is installed to prevent the synthetic resin foaming stock solution from coming out from the side edges.

0010

Effect of the invention: The thickness control roller has a diameter of 11 cm, and the unrestrained roller that presses the metal hoop on the top surface has a diameter of 6 cm.
110 of them were arranged side by side at a predetermined interval, both ends were fixed to side end plates, and they were installed on the ground together with a support frame. The stepped roller that presses the metal hoop material on the lower surface is a stepped roller that has three alternating stepped portions with a diameter of 6 cm in the part that contacts the convex part on the front side of the trapezoidal vein-processed metal hoop material, and a part that presses the concave part with a diameter of 16 cm. 55 pieces were arranged side by side at a predetermined interval, both ends were fixed to the side end plates, and the pieces were installed on the ground together with a support frame. The inclination of the support frame of the thickness control roller that presses against the metal hoop material on the upper surface was set so that the slope gradually increases from 50% to 90% of the thickness of the heat insulating material from the starting point to the end point of the upper and lower metal hoop material introduction parts. The width of the insulation material is 100cm, and the unevenness of the metal hoop material on the bottom surface is 5.
cm, 3 recesses, and a foaming completion time of 70 seconds.The conveyor speed was operated at 12 meters per minute. There was no bulge in the depression on the front side of the metal hoop material on the bottom surface of the insulation material. Moreover, a side effect was also achieved, which was that the liquid surroundings in the thin and narrow portions of the side edges were completely covered.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view in the advancing direction showing the expansion of the recessed portion of a metal hoop material whose lower surface is treated with trapezoidal veins due to the foaming pressure of a synthetic resin stirred liquid in the recessed portion of a heat insulating material according to a conventional manufacturing method.

FIG. 2 is an example of a schematic cross-sectional view showing a method for manufacturing a heat insulating material according to the present invention.

FIG. 3 is a sectional view taken along the line AA' in FIG. 2, showing a state in which no bulging occurs in the recessed portion on the front side of the trapezoidal vein-processed metal hoop material on the lower surface.

[Fig. 4] A cross-sectional view taken along line A-A' in Fig. 2, showing the relationship between the recessed part on the front side of the trapezoidal veined metal hoop material on the lower surface and the uneven roller for preventing swelling caused by the foaming pressure of the synthetic resin foaming stock solution. FIG.

FIG. 5 is a sectional view taken along line BB' in FIG. 2;

[Explanation of symbols]

1 Endless conveyor on the bottom surface 2 Endless conveyor on the top surface 3 An extrusion prevention block made of synthetic resin foam 4 A metal hoop material on the bottom surface 4A A trapezoidal veined metal hoop material on the bottom surface 4B A concave portion on the front side of the trapezoidal veined metal hoop material on the bottom surface 4C Convex portion 5 on the front side of the trapezoidal vein-processed metal hoop material on the bottom surface 5 A of the top metal hoop material 6 Side edge processing metal hoop material on the top surface 7 Side edge processing roller of the metal hoop material on the top surface Trapezoidal vein processing roller 8 on the bottom surface Synthetic resin liquid Stirrer 9A Thickness control roller (uniform thickness) 9B Different thickness control roller 10 Insulation material cutting machine A Insulation material

Claims (2)

[Claims] 1. A lower metal hoop material and an upper metal hoop material in which the trapezoidal veins are formed by continuously supplying the lower metal hoop material and continuously supplying trapezoidal veins with a trapezoidal vein forming roller. A method of producing a heat insulating material by transporting the metal hoops vertically facing each other, and injecting and scattering a synthetic resin foaming solution from a synthetic resin liquid stirrer onto the concave portions and convex portions on the back side of the trapezoidal veins of the lower metal hoop material. After injecting and spreading the synthetic resin foam stock solution onto the concave and convex portions on the back side of the trapezoidal veins of the lower metal hoop material, the upper metal hoop material and the lower metal hoop material are conveyed facing each other to a predetermined thickness. Thickness control rollers temporarily increased from 50% to 90% are placed on top and bottom and pressed to 80% of foaming completion.
A method for producing a heat insulating material, characterized in that the material is immediately transferred between an endless conveyor on the upper surface and an endless conveyor on the lower surface, both of which are set to a predetermined thickness. [Claim 2] After injecting and spreading a synthetic resin foaming solution onto the concave portions and convex portions on the back side of the lower trapezoidal veined metal hoop material, the upper and lower metal hoop materials are conveyed oppositely and pressed together with a thickness control roller. 2. The method of manufacturing a heat insulating material according to claim 1, wherein the material is pressed, slid, and conveyed by uneven rollers that can come into contact with the recesses on the front side of the trapezoidal vein-processed metal hoop material on the lower surface.