JPS5839055B2 - 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 material-containing heat 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. .

The manufacturing method for this heat insulating panel is as follows: 1. Foaming synthetic resin is uniformly sprayed onto a continuously moving moisture-proof surface material, and reinforcing material is embedded in the synthetic resin while the resin is in an uncured state. Layer the other moisture-proof surface material on top of it,
There is a foaming method in which the reinforcing material 1 is placed on the surface material 2 and then sprayed uniformly onto the continuously moving surface material 3 as shown in the cross-sectional view in FIG. A method has been used in which the reinforcing material 1 is pressed against the synthetic resin layer 4, the reinforcing material 1 is pushed into the resin layer 4, and then the entire structure 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.

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 remaining between the reinforcing material 1 and the surface material 3 is foamed and hardened, resulting in a raised uneven thickness in the part where the reinforcing material 1 is buried. Only panels lacking smoothness were obtained.

Therefore, even if panels manufactured by such conventional methods are used as insulation base materials for construction, uneven areas (parts that are raised relative to the mounting surface) will occur, and it is extremely troublesome to correct these uneven areas. 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 made only of synthetic resin foam), the thickness of the reinforcing material part and the heat insulating material part (the part made only of synthetic resin foam) is different, so the synthetic resin foam and the surface material laminated afterwards (for example, the surface material shown in Figure 1) 2) has the disadvantage that adhesion to the surface material becomes uneven, and the surface material is likely to peel off 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. This led to an invention in which grooves were formed on both sides of the foamable synthetic resin, reinforcing material was placed so as to be embedded in the grooves, and the surface material was laminated and hardened by pressure using a conveyor belt. As a result, it was possible to obtain a high-quality reinforcing material-containing insulation panel with smooth surfaces on both sides as shown in FIG.

However, according to this manufacturing method, as shown in FIG. 5, the foamable synthetic resin 9 is moved to both sides by blowing compressed air to form the grooves 12 in the portions of the foamable synthetic resin near both sides of the transparent groove 12. 17 is thicker than other parts because it is gathered together, so if a reinforcing material is installed in the groove 12, a surface material is laminated, and the foaming synthetic resin 9 is pressed by a belt conveyor etc., the foamable synthetic resin 9 is still in an uncured state. Therefore, although the thick portions 17 of the foamed synthetic resin near both sides of the groove 12 are also flattened and a reinforcing material-containing insulation panel with both surfaces smooth enough to be practically impractical is obtained, the synthetic resin Since the foam curing reaction in No. 9 is an exothermic reaction, the reaction proceeds more rapidly in thicker parts.
The foamable synthetic resin parts 17 near both sides of 2 have a higher foaming ratio than other parts, and even if they are crimped evenly using a conveyor belt or the like, they cannot be pressed evenly, resulting in a somewhat uneven surface. was there.

The present invention eliminates these drawbacks, and aims to provide a reinforcing material-containing heat insulating panel with smooth surfaces on both sides, which is even better in quality than the above-mentioned invention.

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 surfacing materials while continuously moving it, compressed air is blown onto both sides of the foaming synthetic resin at the location where the reinforcing material will be buried. Forming a groove by moving it to the side, cooling the portions of the foamable synthetic resin moved to both sides of the groove while foaming the synthetic resin, and placing the reinforcing material so as to embed it in the groove,
If this is moved in the same direction, it is laminated and pressed with one surface material, or the other moisture-proof surface material with a reinforcing material moved in the same direction is placed so that the reinforcing material matches the groove. The present invention provides a method for manufacturing a heat insulating panel containing a reinforcing material, which is characterized by laminating and pressing the foamed synthetic resin and curing the foamable synthetic resin.

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, and 6 is a rod-shaped reinforcing material with approximately the same thickness as the synthetic resin foam embedded therein. This plate-shaped rigid synthetic resin foam 5 has a moisture-proof surface. Materials 7 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 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 side thereof.

The foamable synthetic resin 9 can be sprayed by a sprayer 10 to cause adhesion, or other ordinary adhesion means such as a roll coater, bar coater knife, etc. can be used to apply the foamable synthetic resin 9 to the surface material at a constant speed. Any material may be used as long as it can adhere to 8, but spray is the simplest.

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. 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. 5 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 easier to 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.

Further, the groove 12 is designed to accommodate the amount of compressed air 1.
It is formed by adjusting the height of the nozzle.

Normally, when the width of the reinforcing material is 10 to 50 mm, the compressed air amount is 100 to 400137 mm, and the nozzle height is 10 to 50 mm.
A range of is preferable.

Next, the moisture-proof surface material 8 to which the foamable synthetic resin 9 with the grooves 12 is attached is heated with H-Shio-13 to promote foaming.

On the other hand, a cold air blowing device 16 is provided from the surface side of the foamable synthetic resin 9.
As shown in Fig. 6, cold air is blown from the foaming synthetic resin and applied to the thick parts 17 of the foamable synthetic resin near both sides of the groove 12, so that the reaction rate and expansion ratio of the thick parts are the same as those of other uniform parts. Adjust to the desired level.

It is sufficient that the temperature of the cold air is below the room temperature of the production site, and the amount of air is sufficient to be as light as not to destroy the shape of the synthetic resin layer that is being foamed.

Further, the same number of cold air blowing devices 16 as the number of grooves 12 to be formed may be provided so that cold air hits both sides of the groove, or the same number of cold air blowing devices 16 as the number of both side edges of the groove may be provided so that cold air is applied to each side edge of the valley groove. You may try to hit it.

Next, the moisture-proof surface material 7 (for example, the back material of a heat insulation panel) on which the reinforcing material 6 is placed moves in the same direction as the foamable synthetic resin 9 that is adhered and foamed on the moisture-proof surface material 8, and the reinforcing material 6 is buried in the groove 12, stacked and pressed.

Reference numerals 14 and 15 designate 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 foamable synthetic resins such as foamable polyurethane, phenolic resin, and epoxy resin are usually used. , urea resin, etc. are used.

As the moisture-proof surface material to be laminated on the residue, a moisture-proof sheet-like material having a moisture-proof property is used as appropriate, for example,
Plastic films such as polyvinyl chloride film and polyethylene film, kraft paper, laminate film in which kraft paper is laminated with plastic film or aluminum foil, and asphalt roof ink paper are used.

Moreover, FIG. 4 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 the foamable synthetic resin 9 is attached to one of the moisture-proof surface materials 7, compressed air is blown onto the foamable synthetic resin 9 from a compressed air blowing device 11 to form grooves. The reinforcing material 6 is placed so as to match, and the foamable synthetic resin 9 is moved while being foamed, and the cold air from the cold air blowing device 16 is applied to the portions of the foamable synthetic resin that have been brought to both sides of the groove to cool them down. These and the other moisture-proof surface material 8 moving in the same direction are laminated, and the hard synthetic resin foam 5 is cured while being pressed by upper and lower belt conveyors 14, 15 to obtain a heat insulating panel containing reinforcing material. be.

In the method of manufacturing a heat insulating panel of the present invention, after removing the foamable synthetic resin by blowing compressed air, reinforcing material is embedded and a moisture-proof surface material is laminated. The thicker parts of the plastic synthetic resin are cooled by applying cold air to them, and the reaction rate and expansion ratio are adjusted to the same level as other uniform parts, resulting in a uniform thickness and surface. It is possible to obtain a highly precise insulation panel with reinforcing material that has excellent smoothness.

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

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

As described above, according to the method of the present invention, high-quality reinforcing material-containing insulation panels can be manufactured continuously and efficiently at low cost.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of a heat insulating panel obtained by a conventional method for manufacturing a heat insulating panel with reinforcing material, Fig. 2 is a perspective view of a heat insulating panel with reinforcing material produced by the method of the present invention, and Fig. 3 is a diagram of the present invention. FIG. 4 is a side view showing the manufacturing process of a heat insulating panel according to the method of the present invention; FIG. 5 is a side view showing the manufacturing process of a heat insulating panel according to the method of the present invention; The blowing of cold air during the manufacturing process in FIGS. 3 and 4 is a sectional view of the process. In the figure 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... ...Compressed air blowing device, 12...Groove, 13...Heater 114, 15
...Belt conveyor 16...Cold air blowing device.

Claims (1)

[Claims] 1. Manufacture a heat insulating panel by laminating a moisture-proof surface material on the front and back surfaces of a hard synthetic resin foam, and embedding a reinforcing material of approximately the same thickness inside the foam. In order to do this, one of the moisture-proof surface materials is continuously moved and the foamable synthetic resin is adhered to the surface, and then compressed air is blown onto it to form the foamable synthetic resin at the location where the reinforcing material will be buried. A groove is formed by bringing the resin to both sides, and while the synthetic resin is foamed, the parts of the foamable synthetic resin that are brought to both sides of the groove are cooled, and a reinforcing material is placed so as to be embedded in the groove, This is laminated and pressed with the other moisture-proof surface material that moves in the same direction, or the reinforcing material is embedded in the groove with the other moisture-proof surface material that moves in the same direction and has a reinforcing material placed on it. A method for manufacturing a heat insulating panel with reinforcing material, characterized by laminating and pressing and curing a foamable synthetic resin. 2. The method of manufacturing a heat insulating panel with reinforcing material according to claim 1, characterized in that the portions of the foamable synthetic resin placed on both sides of the groove are cooled by applying cold air.