JP3763935B2 - Insulating panel manufacturing method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for manufacturing a heat insulating panel.
More specifically, the present invention relates to a method for manufacturing a heat insulating panel in which a synthetic resin foam is filled in a box made of a frame surrounding the periphery and face members attached to both sides of the frame.
[0002]
[Prior art]
A heat insulating panel in which a synthetic resin foam is filled in a box made up of a frame surrounding the frame and face materials attached to both sides of the frame is light and has good heat insulating properties. Japanese Utility Model Publication No. 49-34019 As described in (hereinafter referred to as Conventional Example 1), it is often used as a heat insulating panel for buildings such as a wall panel, a ceiling panel, a floor panel, and a roof panel.
[0003]
This thermal insulation panel is usually manufactured by attaching a face material to one side of the surrounding frame and opening the other side, and putting a synthetic resin foam into the box from the opening. Then, this synthetic resin foam is bonded to the face material attached to one surface, and then the other open surface is covered with the face material, and the covered face material is bonded to the synthetic resin foam. It was manufactured by the method.
[0004]
As another method, a method described in JP-A-8-34027 (referred to as Conventional Example 2) is known.
In this method, a box made of a frame surrounding the frame and face materials attached to both sides of the frame is manufactured, and a synthetic resin foam pre-foamed into the box from a through hole provided in the frame is produced. In addition, water vapor is supplied from another through-hole provided in the frame, the pre-foamed synthetic resin foam is further foamed, and the box is filled with the synthetic resin foam.
[0005]
[Problems to be solved by the invention]
However, in the method described in the conventional example 1, a synthetic resin foam is produced by foaming a foamable synthetic resin, and the synthetic resin foam is put in a box and bonded, and then covered with a lid. Thus, since many processes are passed, manufacture is complicated.
Further, the method described in Conventional Example 2 is extremely convenient because a heat insulating panel can be manufactured simultaneously with the production of the synthetic resin foam.
[0006]
However, in this method, since water vapor is supplied from the through holes provided in the frame surrounding the periphery, it is not possible to supply water vapor to every corner of a thin heat insulating panel having a large thickness. There is a problem that the foamed synthetic resin foam does not sufficiently foam.
In addition, when manufacturing a heat insulation panel with a plurality of small boxes provided with crosspieces in the box, when the synthetic resin foam is filled in the small box, it passes through the surrounding frame. It is necessary to provide holes and supply water vapor to the through holes from various directions. However, there is a problem that a device for supplying water vapor from the periphery of the frame overlaps with the moving direction of the heat insulating panel and is difficult to mechanize.
[0007]
Further, when there is a small box that is not in contact with the frame, there is a problem that water vapor cannot be supplied into the small box.
Furthermore, since there are various methods for producing a synthetic resin foam by foaming a foamable synthetic resin, it is impossible to fill all the synthetic resin foams in the box by the above method. .
[0008]
For example, foaming is performed with water vapor in a polystyrene foam or the like, but in a polyurethane resin foam, the foam is manufactured by a method of blowing from a nozzle while foaming a foamable synthetic resin.
Thus, in the polystyrene resin foam, after pre-foaming, it can be put in a predetermined container and completely foamed with water vapor, and the above method can be applied, but the polyurethane resin foam is foamed with water vapor. Therefore, there is a problem that the above method cannot be applied.
[0009]
Therefore, when the present inventor thought that such a problem could be solved by providing a through hole in one face material and injecting a foaming synthetic resin from this through hole, a synthetic resin far from the through hole was experimented. It has been found that there is a difference in the expansion ratio between the foam and the synthetic resin foam in the vicinity of the through-hole, and a good heat insulation panel cannot be produced.
Accordingly, an object of the present invention is to allow a synthetic resin foam that is uniformly foamed while being foamed from the tip of a nozzle like a polyurethane resin foam into a box, and to be mechanized easily. It is providing the manufacturing method of a heat insulation panel.
[0010]
[Means for Solving the Problems]
The present invention has been made to achieve the above object, and the invention according to claim 1 comprises a wooden frame surrounding the periphery and a wooden surface material attached to both sides of the frame. a method of manufacturing a thermal insulation panel synthetic resin foam is filled in the box body, after the box-body was heated at a high frequency heating apparatus, in one said face member of said box-body, foaming the box making body forming a through hole for injecting the sex synthetic resin, is to inject into the box body while foaming the foamable synthetic resin from the hole.
[0011]
The invention according to claim 2 is the invention according to claim 1, wherein the box is heated to 30 ° C. to 50 ° C. from the periphery of the box with a high-frequency heating device.
[0012]
According to a third aspect of the present invention, the synthetic resin foam used in the first or second aspect of the invention is a polyurethane resin foam.
[0013]
(Function)
In the first aspect of the invention, a through hole for injecting the foaming synthetic resin is provided, and the foaming synthetic resin is injected into the box while foaming the foaming synthetic resin from the through hole. It is only necessary to provide a device for injecting the foamable synthetic resin in one direction toward the through-hole, so that the device for injecting the foamable synthetic resin is expanded. It can be easily provided in a direction different from the direction in which the body passes and is easy to mechanize.
[0014]
In addition, in a heat insulation panel with a small thickness and a large surface, by providing a large number of through holes including the vicinity of the corner on one surface, it is possible to supply foaming synthetic resin to every corner while foaming. The foamed synthetic resin foam can be filled to every corner.
[0015]
In addition, a box made of a wooden frame and a wooden surface material attached to both sides of the frame is heated by a high-frequency heating device, so it is included in the wooden frame and the wooden surface material. Moisture is heated by a high-frequency heating device, and the box becomes hot. And before the cooling, the foamed synthetic resin is injected into the box while foaming from the through hole, so that the foam injected into the box while being foamed is filled to every corner without cooling. . Therefore, there is no difference in the expansion ratio of the synthetic resin foam between the vicinity of the through hole and the corner.
Further, the heating method for heating with a high-frequency heating device is extremely fast and can be heated uniformly, so that the productivity is improved and the generation of defective products is reduced.
[0016]
In the invention of claim 2, the box is heated from 30 to 50 ° C. from the periphery of the box by the high-frequency heating device. Various experiments have confirmed that heating to 30 ° C. to 50 ° C. is the best. Therefore, when a heat insulation panel is manufactured by the method according to claim 2, a very good heat-resistant panel foamed substantially uniformly can be manufactured.
[0017]
In the invention according to claim 3, since the synthetic resin foam is a polyurethane resin foam, the polyurethane resin is injected into the box or the small box while foaming, so that the inside of the box or the small space. Can be filled with a synthetic resin foam.
That is, in general, polyurethane resin foam is obtained by adding a foamed synthetic resin comprising a polyester or polyether type polyhydric alcohol, a diisocyanate ester, and a catalyst such as water from a nozzle, and then a polyaddition reaction, a foaming reaction, a crosslinking reaction. The polyurethane resin foam comes out from the tip of the nozzle while foaming.
[0018]
Therefore, the tip of the nozzle is inserted into a through hole provided on one side of the box, and the synthetic resin foam is injected into the box by injecting the foamed synthetic resin into the box while foaming from the nozzle tip. The body can be filled.
Moreover, since this polyurethane resin foam has good heat insulation and high mechanical strength, the heat-resistant panel having good heat insulation and high mechanical strength can be produced by the invention according to claim 3. It is done.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Examples of the present invention will be described below.
FIG. 1 shows an embodiment in which the present invention is applied to the manufacture of a roof unit. FIG. 1 (a) is an explanatory view showing a state in which a roof skeleton is assembled, and FIG. (C) is an explanatory diagram showing a state in which the box is heated by the high-frequency heating device, (d) is provided with a through hole in one face material of the box, and foaming from this through hole Explanatory drawing which shows the state which inject | poured synthetic synthetic resin, (e) is explanatory drawing which shows the state which is conveying while pressing a heat insulation panel, (f) is an explanation which shows the state which is finishing the roof panel (G) is explanatory drawing which shows a roof unit.
[0020]
1 is a roof unit. As shown in FIG. 1 (a), the roof unit 1 has a skeleton 12 in which a bundle 12 is erected on a land beam 11 and a palm 13 is provided thereon. The two trusses are connected by a beam 14, and a rafter 15 is mounted thereon.
A is a box. In this box A, a crosspiece 4 is attached to a frame 3 in which a vertical frame 31 and a horizontal frame 32 are framed in a substantially rectangular shape to form a large number of small boxes 5. The face material 6 is attached to both side surfaces of the frame 3.
[0021]
2 is a heat insulation panel, and this heat insulation panel 2 is a box A filled with a synthetic resin foam.
Reference numeral 55 denotes a through hole that communicates with the small box 5 provided on one face member 6.
7 is a foaming device, and 71 is a nozzle. A drill 72 is provided with a through hole 55.
Reference numeral 8 denotes a high-frequency heating device, and reference numeral 85 denotes a press device including endless conveying devices provided at the top and bottom.
[0022]
Reference numeral 9 denotes a roof panel. The roof panel 9 has a waterproof sheet 91 made of roofing attached to the upper surface of the heat insulating panel 2 and a ceiling material 92 made of gypsum board attached to the lower surface.
And this roof unit 1 attaches the roof panel 9 on the rafter 15 as shown in FIG.
[0023]
Next, the manufacturing method of this roof unit 1 is demonstrated.
As shown in FIG. 1 (a), a bundle 12 is erected on the land beam 11, a palm 13 is provided on this to form a substantially triangular truss, and these two trusses are connected by a beam 14. Then, the rafter 15 is attached on this, and the skeleton of the roof unit 1 is manufactured.
On the other hand, as shown in (b), a vertical frame 31 and a horizontal frame 32 made of wood are assembled into a substantially rectangular shape to form a frame 3, and a crosspiece 4 is attached to the frame 3 to form a large number of small boxes 5. Form.
[0024]
A box 6 is manufactured by attaching face materials 6 (OSB-oriented strand boards) to both sides of the frame 3.
Next, the box A is heated to about 40 ° C. through the high-frequency heating device 8 from the periphery of the box A as shown in FIG.
Next, before the box A cools, as shown in (d), a drill hole 72 (φ50 mm) communicating with one face material of the box A with the drill 72 and passing through the small box 5 is provided. When the foaming polyurethane resin is injected while being foamed from the foaming device 7 by being inserted into the through-hole 55, the heat insulating panel 2 in which the polyurethane resin foam is filled in the small box 5 can be manufactured. In addition, the foaming polyurethane resin can be smoothly injected by providing a small through hole for extracting air at an appropriate position of the frame 3.
[0025]
In this way, the through hole 55 communicating with the small box 5 is provided in one face material, and the through hole 55 faces one side. Accordingly, the foaming device 7 for injecting the foamable synthetic resin while being foamed only needs to be provided in one direction toward the through hole 55, and therefore the foaming device 7 does not get in the way of the passage through the heat insulating panel 2. The foamed synthetic resin can be injected and can be easily mechanized and the heat insulating panel 2 can be easily mass-produced.
[0026]
Moreover, even if the insulating panel 2 is thin, by providing the plurality of through holes 55, the foamable synthetic resin can be supplied while being foamed to every corner.
Further, even in the heat insulating panel 2 provided with a large number of small boxes 5 by dividing the frame into a large number by crosspieces, all necessary small boxes are formed while foaming synthetic resin from the through holes 55 communicating with the small boxes 5. This is convenient because the synthetic resin foam can be dispensed with in the small box 5 that does not require heat insulation.
[0027]
In this way, the box A composed of the wooden frame 3 and the wooden face material 6 attached to both sides of the frame 3 is heated from the periphery of the box A with a high-frequency heating device. 3 and the wooden surface material 6 are heated by the high-frequency heating device, and the inside of the box A becomes high temperature. Before cooling, the foamed synthetic resin is poured into the box A while being foamed from the through hole, so that the foam injected while foaming is almost uniformly foamed without cooling. Filled. Therefore, there is no difference in the expansion ratio of the synthetic resin foam between the vicinity of the through hole and the corner.
[0028]
Thus, even if the synthetic resin foam is a polyurethane resin foam, the polyurethane resin is injected into the small box 5 while being foamed, and the synthetic resin foam is filled into the small box 5. Can do.
Since this polyurethane resin foam has good heat insulation and good mechanical strength, the heat insulation panel 2 manufactured in this way has good heat insulation and good mechanical strength.
As shown in FIG. 1 (e), when the heat insulating panel 2 manufactured in this way is passed between presses and pressed on the swelled face material, the heat insulating panel 2 with good dimensional accuracy is obtained.
[0029]
Next, the waterproof sheet 91 is attached to the upper surface of the heat insulation panel 2 or the ceiling material 92 is attached to the lower surface to produce the roof panel 9 shown in FIG. 1 (f). The roof unit 1 having good heat insulating properties could be manufactured by attaching it onto the rafter 15 of the skeleton of the roof unit 1 manufactured in (1).
[0030]
【The invention's effect】
In the invention according to claim 1, the box is provided with a through hole for injecting the foamable synthetic resin, and the foamable synthetic resin is injected into the box while foaming from the through hole. Therefore, it is very convenient because it is easy to mechanize and mass-produces insulation panels.
In addition, in a heat insulation panel with a small thickness and a large surface, by providing a large number of through holes including the vicinity of the corner on one side, it is possible to supply the foaming synthetic resin to every corner while foaming. This is convenient because the synthetic resin foam can be filled to every corner.
[0031]
In addition, a box made of a wooden frame and a wooden surface material attached to both sides of the frame is heated by a high-frequency heating device, so it is included in the wooden frame and the wooden surface material. Moisture is heated by a high-frequency heating device, and the box becomes hot. Before cooling, the foamed synthetic resin is injected into the box while foaming into the box from the through-hole, so that the foam injected while foaming is almost uniformly in every corner without cooling. The foamed synthetic resin foam is filled. Therefore, there is no difference in the expansion ratio of the synthetic resin foam between the vicinity of the through hole and the corner. The heating method using a high-frequency heating device is extremely fast and can be heated uniformly, so that the productivity is improved and the generation of defective products is reduced, which is extremely valuable.
[0032]
In the invention of claim 2, the box is heated from 30 to 50 ° C. from the periphery of the box by the high-frequency heating device. Various experiments have confirmed that heating between 30 ° C. and 50 ° C. is the best. Thus, since it heats to the best temperature range, a very favorable stubborn panel can be manufactured.
[0033]
In the invention according to claim 3, since the synthetic resin foam is a polyurethane resin foam, the polyurethane resin is injected into the box or the small box while foaming, so that the inside of the box or the small space. Can be filled with a synthetic resin foam.
Moreover, since this polyurethane resin foam has good heat insulation and high mechanical strength, a heat insulation panel having good heat insulation and high mechanical strength can be produced by the invention according to claim 3.
[Brief description of the drawings]
FIG. 1 shows an embodiment in which the present invention is applied to the manufacture of a roof unit. FIG. 1 (a) is an explanatory view showing a state where a roof skeleton is assembled, and FIG. (C) is an explanatory diagram showing a state in which a through hole is provided on one surface of the box, (d) is an explanatory diagram showing a state in which a synthetic resin is injected, ) Is an explanatory view showing a state where the heat insulation panel is being conveyed, (f) is an explanatory view showing a state where the heat insulation panel is being finished, and (g) is an explanatory view showing a roof panel.
[Explanation of symbols]
A box 1 roof unit 2 heat insulation panel 3 frame 4 crosspiece 5 small box 55 through-hole 6 face material 8 high-frequency heating device

Claims (3)

A method of manufacturing a thermal insulation panel synthetic resin foam is filled into a box body made of a wood-made framework and wood made of face material which is attached to both sides of the framework surrounding, the box body after heating at a high frequency heating apparatus, in one said face member of said box-body, said forming a hole for injecting the foaming synthetic resin in a box body, while foaming the foamable synthetic resin from the hole A method for producing a heat insulating panel, characterized by being poured into a box.   2. The method for manufacturing a heat insulating panel according to claim 1, wherein the box is heated from 30 to 50 [deg.] C. from the periphery of the box with a high-frequency heating device.   The method for producing a heat insulating panel according to claim 1 or 2, wherein the synthetic resin foam is a polyurethane resin foam.

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