JPS5839054B2 - Method for manufacturing insulation panels with reinforcing materials - Google Patents

Description

[Detailed description of the invention] The present invention relates to a method of manufacturing a reinforcing insulation panel.

A heat insulating panel made by laminating a moisture-proof surface material on the front and back sides of a hard synthetic resin foam and embedding a reinforcing material of approximately the same thickness inside the foam is known as a construction material. .

Up until now, the manufacturing method for this insulation panel has been to uniformly spray a foaming synthetic resin onto a continuously moving moisture-proof surface material, and when the resin is in an uncured state, reinforcing material is embedded inside the other moisture-proof surface material. A reinforcing material 1 is placed on a surface material 2 as shown in the cross-sectional view in Fig. 1, and this is then continuously moved. The reinforcing material 1 is pressed onto a foamable synthetic resin layer 4 formed by uniformly spraying it on the resin layer 3, the reinforcing material 1 is pushed into the resin layer 4, and the whole is foamed and hardened.

In these methods, the reinforcing material is pushed in before the foamable synthetic resin hardens, so the foamable synthetic resin is pushed aside from side to side.

Further, removal of the foamable synthetic resin on the entry surface of the reinforcing material can be facilitated by pressing the panel with a conveyor belt or the like.

However, even if this is done, it is difficult to completely remove the foamable synthetic resin from the entry area of the reinforcing material, and a considerable amount of the foamable synthetic resin remains in that area.

For example, as shown in FIG. 1, the foamable synthetic resin 4a remains between the reinforcing material 1 and the surface material 3 and is foamed and hardened, resulting in uneven thickness and uneven thickness in the area where the reinforcing material 1 is buried. All I got was a panel that lacked sex.

°For this reason, even if panels manufactured by such conventional methods are used, for example, as insulation base materials for buildings, uneven areas (parts that are raised relative to the mounting surface) will occur, and it is extremely difficult to correct these uneven areas. tedious construction work was required.

In addition, because the thickness of the panel is different between the reinforcing material part and the heat insulating material part (the part consisting only of synthetic resin foam), the synthetic resin foam envelope and the surface material laminated later on it (for example, the first
There was a drawback that the adhesion to the surface material 2) in the figure was uneven, and the surface material was likely to peel or wrinkle.

As described above, although insulation panels with reinforced materials are expected to have many uses, conventional manufacturing methods only yield panels with many drawbacks and low commercial value; The range of use was limited.

The inventors of the present invention have conducted intensive research to overcome the shortcomings of the conventional methods of manufacturing insulation panels containing reinforcing materials. As a result, the inventors of the present invention sprayed compressed air into the portion of the foamable synthetic resin layer where the reinforcing material was to be buried before foaming started. We discovered that if we do this, the foamed synthetic resin will be gathered to both sides, preventing the foamed synthetic resin from remaining in the buried part of the reinforcing material, and that this will allow us to manufacture insulation panels with excellent surface smoothness. Based on these findings, the present invention has been completed.

That is, the present invention manufactures a heat insulating panel in which a moisture-proof surface material is laminated on the front and back surfaces of a hard synthetic resin foam, and a reinforcing material of approximately the same thickness is embedded inside the foam. After the foaming synthetic resin is adhered to the surface of one of the moisture-proof surface materials by continuously moving it, compressed air is blown onto it to remove the foaming synthetic resin at the location where the reinforcing material will be buried. Grooves are formed on both sides, and while foaming the synthetic resin, a reinforcing material is placed so as to be embedded in the groove, and this is laminated with the other moisture-proof surface material moving in the same direction. The foamable synthetic resin is cured by laminating and pressing the other moisture-proof surface material on which a reinforcing material moving in the same direction is placed so as to embed the reinforcing material in the groove. The present invention provides a method for manufacturing a heat insulating panel containing a reinforcing material.

. The present invention will be explained below based on illustrated embodiments.

FIG. 2 is a perspective view of a heat insulating panel manufactured by the method of the present invention.

In the figure, 5 is a plate-shaped rigid synthetic resin foam, 6 is a rod-shaped reinforcing material with approximately the same thickness as the synthetic resin foam embedded therein, and the plate-shaped rigid synthetic resin foam 5 has a moisture-proof surface. Materials 1 and 8 exhibit a sandwich-like structure.

This panel has substantially no plate-shaped rigid synthetic resin foam between the moisture-proof surface materials 7 and 8 and the rod-shaped reinforcing material 6, and has excellent smoothness on both the front and back surfaces.

FIG. 3 is a side view illustrating the process of manufacturing a heat insulating panel according to the method of the present invention.

In FIG. 3, one moisture-proof surface material 8 (for example, the back surface material of a heat insulating panel) is moved at a constant speed in the direction of the arrow, and a foamable synthetic resin 9 is adhered to one surface thereof.

This foamable synthetic resin 9 is sprayed and adhered by a sprayer 10, but other than this, ordinary adhesion means such as a roll coater, bar coater, knife coater, etc. can be used to spray the foamable synthetic resin 9 at a constant speed. Any material can be used as long as it can adhere to the surface material 8, but spraying is most convenient.

The foamable synthetic resin 9 attached to the moisture-proof surface material 8 adheres to the surface material 8 due to its own adhesiveness and moves in the direction of the arrow while foaming.

In the figure, reference numeral 11 denotes a compressed air blowing device, which has the same number of nozzles as the number of reinforcing materials 6, and blows air onto the foamable synthetic resin 9 attached to the moisture-proof surface material 8 that is being sent to form a foamable material. The synthetic resin 9 is pushed aside to form a groove in which the reinforcing material 6 is to be buried.

One or more nozzles may be provided for each groove to be formed, and the nozzle may have a vertically elongated shape with respect to the flow direction.

FIG. 4 shows a cross-sectional view of the state in which the grooves are formed by blowing compressed air.

In the figure, 12 indicates a groove formed by blowing compressed air.

The compressed air blowing device used in the present invention is preferably one in which the amount of compressed air blowing out and the distance from the foamable synthetic resin 9 can be adjusted.

The position of the nozzle of the compressed air blowing device may be anywhere within the range where the foamable synthetic resin 9 does not lose its fluidity after it has been deposited, but it can be easily blown with a small amount of compressed air. In addition, in order to make the surface of the foamable synthetic resin smooth due to its own fluidity, and to make the cell structure of the foam as uniform as possible after foaming is completed, foaming is carried out. It is preferable that the synthetic resin 9 is sprayed immediately after.

In addition, the groove 12 is designed to accommodate the amount of compressed air according to the width of the reinforcing material 6.
It is formed by adjusting the height of the nozzle.

Usually, when the width of the reinforcement is between 10 and 50, the amount of compressed air is 1
00~400137min, nozzle height 10~50m1
A range of 1 L is preferred.

Next, the moisture-proof surface material 8 to which the foamable synthetic resin 9 with the grooves 12 is attached is heated with a heater 13 to promote foaming, and the foam is moved in the same direction at the same speed in an uncured state. Move with.

The other moisture-proof surface material 7 (for example, the surface material of a heat insulating panel) on which the reinforcing material 6 is placed and the reinforcing material 6 are embedded in the groove 12, laminated, and pressed.

Reference numerals 14 and 15 denote belt conveyors, which convey the laminate while pressing it. At this time, the thickness of the panel is adjusted, and the curing of the foamed synthetic resin 9 is completed.

The foamable synthetic resin used in the present invention is not particularly limited as long as the foam has excellent heat insulation properties and self-adhesive properties, but typically foamable polyurethane, phenolic resin, epoxy resin, urea Resin etc. are used.

In addition, as the moisture-proof surface material to be laminated on this, a flexible sheet-like material having moisture-proof properties is used as appropriate.For example, plastic films such as polyvinyl chloride film and polyethylene film, kraft paper and plastic Films or laminate films laminated with aluminum foil, asphalt roofing paper, etc. are used.

Further, FIG. 5 is a side view illustrating the process of manufacturing a heat insulating panel according to the other side of the method of the present invention.

In this embodiment, after a foamable synthetic resin 9 is attached to one of the moisture-proof surface materials 7, a groove is formed in the foamable synthetic resin 9 by blowing compressed air from a compressed air blowing device 11. The reinforcing material 6 is placed so as to match, the foamable synthetic resin 9 is moved while being foamed, and the other moisture-proof surface material 8 moving in the same direction is laminated, and the upper and lower belt conveyors 14, The hard synthetic resin foam 5 is cured while being pressed with the pressure pump 15 to obtain a reinforcing material-containing heat insulating panel.

In the manufacturing method of the heat insulation panel of the present invention, the foamable synthetic resin is removed by blowing compressed air, and then the reinforcing material is embedded and the moisture-proof surface material is laminated. A highly precise reinforcing material-containing insulation panel with excellent smoothness can be obtained.

In addition, the heat insulation panels manufactured in this way have uniform adhesion of the moisture-proof surface material, do not peel, and do not show any wrinkles, and have excellent quality stability. .

If such a heat insulating panel is used, construction can be easily performed with extremely high accuracy without creating uneven parts.

As described above, the method of the present invention has the effect of being able to continuously and efficiently manufacture high-quality reinforcing material-containing heat insulating panels at low cost.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view of a reinforcing material-containing heat insulating panel produced by the conventional method, Fig. 2 is a perspective view of a reinforcing material-containing heat insulating panel produced by the method of the present invention, and Fig. 3 is a heat insulating panel by the present invention method. Figure 4 is a side view showing the manufacturing process of
The blowing of compressed air during the manufacturing process shown in the figure is a sectional view showing the process, and FIG. 5 is a side view showing the manufacturing process of the heat insulation panel according to the other side of the method of the present invention. 5... Plate-shaped rigid synthetic resin foam, 6... Rod-shaped reinforcing material, 7.8... Moisture-proof surface material, 9... Foaming synthetic resin, 10... Spray 11... Compression air blowing device,
12...Groove, 13...Heater 14,15...
belt conveyor.

Claims (1)

[Claims] 1. When manufacturing a heat insulating panel in which a moisture-proof surface material is laminated on the front and back surfaces of a hard synthetic resin foam, and a reinforcing material of approximately the same thickness is embedded inside the foam, either While continuously moving one moisture-proof surface material, the foamable synthetic resin is attached to the surface, and then compressed air is blown onto it to move the foamable synthetic resin at the location where the reinforcing material will be buried to both sides. to form a groove, and while foaming the synthetic resin, place the reinforcing material so as to embed it in the groove, and laminate and press the reinforcing material with the other moisture-proof surface material moving in the same direction, Or a reinforcing material characterized by laminating and pressing the other moisture-proof surface material on which a reinforcing material that moves in the same direction is placed so that the reinforcing material is embedded in the groove, and then hardening the foamable synthetic resin. A method for producing a heat insulation panel.