JPH08142069A - Production of heat insulating panel and frame material used therein - Google Patents

Abstract

PURPOSE: To prevent the leakage of a resin to the outside, to certainly perform air venting and to eliminate the generation of a waste material to save resources. CONSTITUTION: A step of arranging and fixing a frame material consisting of support frames 11 and wood frames 12 and a surface material and attaching venting plugs 15 for preventing the passage of a foamable resin material to the insides of the air venting holes 14 provided to the wood frames 12 to constitute a panel main body 10 having a space therein and a step of injecting the foamable resin material 18 into the space formed in the panel main body 10 and expanding the resin material throughout the space to solidify the same while discharging only air from the air venting holes by the venting plugs 15 are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a heat insulating panel used as a wall material or a floor material of a wooden building or a floor board, and a frame material used for the method.

[0002]

2. Description of the Related Art When building a wooden building, it is common to insulate the walls, floors, etc. of the building. For such insulation, a foaming resin foam insulation material is wrapped by plates or columns. As a result, one independent heat insulation panel is configured, and this heat insulation panel is arranged between the pillars of the frame and construction is performed.

Conventionally, as a method for manufacturing such a heat insulating panel, an apparatus as shown in FIG. 7 is used to place a panel main body 40 constituting the heat insulating panel on a table 31 and form a mold (not shown) from above and below. In the pressed state, while being heated by the heater 32, the foamable resin material 4 is discharged from the resin injection port 46.
There is known a so-called batch type in which 8 is injected and the mixture is expanded and solidified to be manufactured. In this manufacturing method, first, as shown in FIG. 8, an outer frame is created by assembling the left and right support frames 41 and the front and rear wooden frames 42, and a face material 43 (not shown in the top view) is further arranged above and below. The panel body 40 is fixed and has a space inside. Next, as shown in FIG. 9, the nozzle 4 is inserted from the resin injection port 46 provided in the wooden frame 42.
7 is inserted, and the expandable resin material 48 is injected from the injector and expanded. At this time, it is necessary to provide an air vent hole 44 in the wooden frame 42 in order to prevent unevenness in the foamed resin. Therefore, when the foamable resin material 48 is injected and expanded, excess resin leaks out from the air vent hole 44 as shown in FIG. Therefore, finally, as shown in FIG. 11, the portions of the front and rear wooden frames 42 are cut and the end faces are cut and aligned to manufacture a heat insulating panel as a final product.

[0004]

However, such a conventional method for manufacturing a heat insulating panel is not suitable for resource saving because it is difficult to dispose of a large amount of cut wooden frames as waste materials. . The leaked resin drips and adheres to peripheral devices and jigs, and it takes a lot of time to clean it, resulting in poor production efficiency. It takes time to produce the product because it requires post-processing to cut the crate. There was such a problem.

The present invention has been made under such circumstances, and an object of the present invention is to allow resin to leak outside when a foamable resin material is expanded in the space of the panel body. A method for manufacturing a heat insulating panel and a frame used for the same, which can prevent air from leaking out, can reliably perform air bleeding, can enhance production efficiency, and further can reduce resource consumption by eliminating waste materials. Is to provide wood.

[0006]

That is, in the method for manufacturing a heat insulating panel according to the present invention, (a) the frame material and the face material by the support frame and the wooden frame are arranged and fixed, and the heat insulating panel is provided on the frame material. The process of constructing a panel body with a space inside by attaching a vent plug that does not allow the foamable resin material to pass through inside the air vent hole. (B) The foamable resin material is placed in the space formed in the panel body. It is characterized in that it is manufactured by a step of injecting and expanding only the air through the air vent through the air vent hole to expand the injected foamable resin material into the entire space to solidify.

Further, the frame material used in the method for manufacturing the heat insulating panel according to the present invention has an air vent hole due to expansion of the foamable resin material, and the foamable resin material is passed through inside the air vent hole. It is characterized by having a ventilation plug that cannot be used.

In the above manufacturing method, a column frame, a wooden frame,
Each member of the face material is arranged on the left, right, front and back, and on the upper and lower sides to form a panel body having a space inside. The pillar frame and the wooden frame are made of natural wood such as pine, toga, or cedar or laminated wood, and the face material is made of veneer, plywood or kraft paper. In addition, as the form of the panel body, there is one that has prop frames on the left and right as well as prop frames in the internal space, and as the surface material, the upper and lower sides are kraft paper, one side is kraft paper and the other side is plywood. There are things such as

The above frame material refers to individual members used for a support frame or a wooden frame. Therefore, the air vent holes provided in the frame member may be provided in either the support frame or the wooden frame, or may be provided in both. This frame material forms a part of the heat insulation panel in the final product stage. Such a frame material can be made using natural wood such as pine, toga, or cedar, or laminated wood. The frame material has an air vent hole due to expansion of the expandable resin material, and a vent plug that does not allow the expandable resin material to pass through inside the air vent hole. A resin injection port for injecting a flexible resin material may be formed.

The aeration plug has a structure in which a foamable resin material cannot pass through but allows only air to escape. Specifically, a soft urethane resin foam or a porous ceramics sintered body having a ventilation structure. A woven or non-woven fabric of natural fibers such as cotton or chemical fibers such as polyamide resin (nylon) fibers, or polypropylene resin powder processed into a filter form can be used. Of these, the soft urethane resin foam is relatively inexpensive and easy to process, so it is easy to correspond to air vent holes of various sizes, and the foamable resin material is compressed when expanded. Since it becomes small, it does not affect the heat insulating property, which is preferable.

As a method of attaching the vent plug to the inside of the air vent hole, a method of bonding with an adhesive, a method of providing a counterbore at a position where the air vent hole is provided on the inner surface of the frame member and fitting it into the air vent hole, There is a method for filling the same, and it may be fixed so that it does not jump out from the air vent hole due to expansion of the foamable resin material.
In addition, when a counterbore is provided at the position where the air vent hole is provided on the inner surface of the frame member and is fitted into the air vent hole, the vent plug is unlikely to be displaced due to expansion of the foamable resin material, and further escapes outside from the air vent hole Since there are few concerns, it is suitable as a mounting method.

As the foamable resin material, a liquid material is used in which a foaming agent is mixed with a resin having self-adhesiveness such as urethane resin, isocyanurate resin, phenol resin and urea resin. The foaming density and the curing time at the time of solidification after foaming can be adjusted by the kind of resin, the blending amount of the foaming agent, and the kind. In addition, a water repellent or an inorganic substance may be added to improve moisture resistance / waterproofness and fireproofness.

The heat insulating panel manufactured by the manufacturing method of the present invention can be used as a wall material or floor material of a wooden building or a field board.

[0014]

In the method of manufacturing a heat insulating panel according to the first aspect of the present invention, since the vent plug allows only the air to pass through and prevents the foamed resin from passing through, the resin leaks from the air vent hole. Therefore, the heat insulating panel can be efficiently manufactured without contaminating the peripheral devices and jigs. Further, unlike the case of the conventional manufacturing method, no post-treatment for cutting the portion of the wooden frame is required, and therefore, waste material is not generated and resource saving can be achieved.
Further, since the post-treatment is unnecessary, the production time can be shortened. Further, it is possible to increase the size of the air vent hole by the vent plug, which improves air release, stabilizes foaming of the resin, and can be expected to form a uniform foamed resin filled layer in the space of the panel body.

The frame material according to a second aspect of the present invention is suitable for manufacturing the heat insulation panel, and when the foamable resin material is expanded in the space of the panel body, the resin is external Air can be surely vented without leaking out, and it is possible to manufacture a heat insulating panel that does not generate waste materials.

Further, in the frame member according to the third aspect of the present invention, the ventilation plug is fitted in the counterbore formed at the position where the air vent hole is provided on the inner surface of the frame member. In the above, it is difficult for the foamed resin material to be displaced due to expansion, and there is little fear that it will come out from the air vent hole.

Further, in the frame material according to the fourth aspect of the present invention, the vent plug is made of soft urethane resin, and it is easy to correspond to air vent holes of various sizes, and when the foamable resin material expands. Since it is compressed and becomes smaller, it does not affect the heat insulation.

[0018]

Embodiments of the present invention will now be described with reference to the drawings. 1 to 3 show schematic views of a method for manufacturing a heat insulating panel according to the present invention. In the method for manufacturing a heat insulating panel according to the present invention, first, as shown in FIG. 1, the pillar frame 11, the wooden frame 12, and the face material 13 are arranged / fixed in the left / right, front / rear, and top / bottom (the upper face material 13 is shown in the figure. Is also omitted), a ventilation plug 15 through which the foaming resin material cannot pass is attached inside the air vent hole 14 provided in the wooden frame 12 to form the panel body 10 having a space inside. Prop frame 1
1, the wooden frame 12 and the face material 13 are fixed to each other by adhesion applying an adhesive or nailing. The air vent holes 14 are provided at two locations in each wooden frame 12 at a total of four locations, and one of the wooden frames 12 is provided with a resin injection port 16 for injecting a foamable resin material into the space of the panel body 10. There is. Aeration plug 15
Was made of a soft urethane resin foam and attached with an adhesive. The panel body 10 has the same size as the heat insulating panel that is the final product.

Next, as shown in FIG. 2, the resin injection port 16
The nozzle 17 is inserted into and the foamable resin material 18 is injected into the space formed in the panel body 10. At this time,
The insertion length of the nozzle 17 is determined so that the resin material 18 is injected into the center of the space of the panel body 10. Resin material 1
Urethane resin was used for 8.

Then, as shown in FIG. 3, the nozzle 17 is removed, the resin injection port 16 is tightly plugged, and the injected foamable resin material 18 is expanded and solidified in the entire space of the panel body 10. At this time, pressing is performed with a mold from above and below where the face material 13 is arranged, and heating is performed by a heater in order to promote foaming of the resin material 18. At the stage where the resin material 18 foams and expands into the space of the panel body 10, the air in the space is discharged to the outside from the air vent hole 14 through the vent plug 15, and the resin cannot pass through the vent plug 15.
It does not leak outside. Thereby, a heat insulation panel can be manufactured. The plug 19 attached to the resin injection port 16 may be removed, or the part of the plug 19 protruding from the wooden frame 12 may be cut off for finishing.

In the heat insulation panel manufactured by the above manufacturing method, the panel body 10 is provided with the column frames 11 only on the left and right, but the invention is not limited to this, and as shown in FIG.
The manufacturing method of the present invention can be applied to the panel body 10 including the support frame 11 in the internal space. That is, as in the panel body 10 shown in FIG.
For those having each space divided into a plurality by 1, an air vent hole and a resin injection port are provided for each space,
The foamable resin material 18 may be injected into each space so as to expand and solidify in each space.

FIG. 5 shows a ventilation plug 15 inside the air vent hole 14.
A cross-sectional view of a wooden frame 12 that is a frame material including
Reference numeral 5 denotes the wooden frame 12 attached to the inner surface of the wooden frame 12. FIG. 6 also shows a ventilation plug 15 inside the air vent hole 14.
A cross-sectional view of a wooden frame 12 that is a frame material including
Reference numeral 5 denotes the wooden frame 12 fitted in the counterbore 20 formed at the position where the inner surface of the wooden frame 12 is provided.
In the present invention, the vent plug 15 can be attached to increase the hole diameter of the air vent hole 14 (conventionally 3 mmφ) to improve air release.

[0023]

As described above in detail, according to the present invention,
"(A) Place and fix the frame material and face material by the support frame and the wooden frame, and install the ventilation plug that does not allow the foaming resin material to pass through inside the air vent hole provided in the frame material. Forming a panel body having a space in
(B) A foamable resin material is injected into the space formed in the panel body, and only the air is discharged from the air vent hole by the ventilation plug, and the injected foamable resin material is expanded throughout the space. The method of manufacturing a heat-insulating panel manufactured by the step of solidifying and solidifying the resin can prevent the resin from leaking through the air vent hole and stain the peripheral devices and jigs efficiently, and the heat-insulating panel can be efficiently manufactured. . or,
Unlike the case of using the conventional manufacturing method, post-processing for cutting the portion of the wooden frame is not required, so that waste material is not generated and resource saving can be achieved. Further, since the post-treatment is unnecessary, the production time can be shortened. further,
It is possible to increase the size of the air vent hole by the vent plug, which improves air release, stabilizes foaming of the resin, and can be expected to form a uniform foamed resin filled layer in the space of the panel body.

Further, the "frame material having an air vent hole due to expansion of the foamable resin material and having a vent plug inside the air vent hole through which the foamable resin material cannot pass through" is formed by the foamable resin material. It is possible to manufacture a heat-insulating panel in which the resin does not leak outside and no waste material is generated when the resin is expanded in the space of the panel body.

[Brief description of drawings]

FIG. 1 is a plan view of one step schematically showing a method for manufacturing a heat insulating panel of the present invention.

FIG. 2 is a plan view of one step which also schematically shows the manufacturing method of the heat insulating panel of the present invention.

FIG. 3 is a plan view of one step which also schematically shows the manufacturing method of the heat insulating panel of the present invention.

FIG. 4 is a plan view showing an example in which the form of the panel body is different.

FIG. 5 is a partial cross-sectional view showing an embodiment of the frame material of the present invention.

FIG. 6 is a partial cross-sectional view showing another embodiment of the frame material of the present invention.

FIG. 7 is a side view showing an outline of a batch type heat insulating panel manufacturing apparatus.

FIG. 8 is a plan view of one step schematically showing a conventional method for manufacturing a heat insulating panel.

FIG. 9 is a plan view of one step that also schematically shows a conventional method of manufacturing a heat insulating panel.

FIG. 10 is a plan view of one step that also schematically shows a conventional method of manufacturing a heat insulating panel.

FIG. 11 is a plan view of one step that also schematically shows a conventional method of manufacturing a heat insulating panel.

[Explanation of symbols]

 10 panel body 11 prop frame 12 wooden frame 13 face material 14 air vent hole 15 ventilation plug 16 resin injection port 17 nozzle 18 foaming resin material 19 plug 20 counterbore

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location B29K 105: 04 B29L 31:10

Claims (4)

[Claims] 1. A method of manufacturing a heat insulating panel, which is manufactured by the following steps (a) and (b). (B) Place and fix the frame material and face material by the prop frame and the wooden frame, and install a ventilation plug that does not allow the foaming resin material to pass through inside the air vent hole provided in the frame material. Step of constructing a panel body having a space (b) A foaming resin material is injected into the space formed in the panel body, and the air is injected by the ventilation plug while discharging only air from the air vent hole. A step of expanding and solidifying a resin material in the entire space 2. A frame material used in the manufacture of a heat insulating panel, which is framed by a prop frame, a wooden frame, and a face material, and has a filling layer of a foamable resin foam inside, the foam material comprising a foamable resin material. A frame member having an air vent hole by expansion and provided with a vent plug inside the air vent hole through which a foamable resin material cannot pass. 3. The frame member according to claim 2, wherein the vent plug is fitted in a counterbore formed at a position where an air vent hole is provided on the inner surface of the frame member. 4. The frame member according to claim 2, wherein the ventilation plug is made of a soft urethane resin.