JP3021335B2 - Thermal insulation panel and its manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foamed resin heat insulating material which is filled between two metal skins, and a convex portion is inserted into one side edge of the heat insulating panel and a convex portion is inserted into the other side edge. More particularly, the present invention relates to a heat insulating panel having a concave portion surrounded by a metal shell and a manufacturing method thereof. The present invention also relates to a technique for obtaining sufficient heat insulating properties.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 5, a foamable resin heat insulating material 3 is filled between two metal outer skins 1 and 2, and a convex portion 4 is provided at one edge of a heat insulating panel and at the other side. In the heat insulating panel Aa in which the concave portion 5 into which the convex portion 4 is inserted at the edge is surrounded by the metal shells 1 and 2, the convex portion 4 and the concave portion 5 are fitted into the concave and convex portions so that a sufficient connection portion is provided. It is intended to provide heat insulation.

[0003]

However, in such a structure, it is necessary to sufficiently increase the foaming pressure in order to fill and foam the foamable resin heat insulating material 3 to the inside of the tip of the convex portion 4. Also, even when the foaming pressure is increased, the gas in the convex portion 4 formed by folding the metal sheaths 1 and 2 must be discharged to the outside, and the foamable resin extends to the inside of the tip of the convex portion 4. There is a problem that it is difficult to foam-fill the heat insulating material 3, a hollow portion E is easily formed inside the convex portion 4, and the heat insulating property at the concave-convex fitting portion is easily reduced.

The present invention has been made in view of such a problem, and an object of the present invention is to surround a convex portion and a concave portion with a metal outer cover to increase the fire resistance of the concave and convex connection portion, and to increase the convex portion. It is an object of the present invention to provide a heat insulating panel capable of sufficiently filling the inside of the tip with a filler, and sufficiently improving the heat insulating property at the concave / convex fitting portion, and a method of manufacturing the same.

[0005]

According to a first aspect of the present invention, a foamed resin heat insulating material is filled between two metal outer skins and a convex portion is provided at one side edge of the heat insulating panel. A heat insulating panel formed by surrounding a concave portion 5 into which a convex portion 4 is inserted into a side edge portion with metal outer skins 1 and 2, and a soft material different from the foamable resin heat insulating material 3 inside the convex portion 4. It is characterized by being filled with a foamed synthetic resin band 6.

According to the second aspect, the two metal shells 1 and 2 are provided.
The foamed resin heat insulating material 3 is filled between the two, and the convex portion 4 is surrounded by one side edge of the heat insulating panel, and the concave portion 5 into which the convex portion 4 is inserted is surrounded by the metal sheaths 1 and 2 at the other side edge. A method for manufacturing a heat-insulating panel formed in this manner, in which a convex portion 4 is previously filled with a soft foam synthetic resin band 6 different from the foamable resin heat-insulating material 3, and thereafter the foamable resin heat-insulating material 3 is filled. It is characterized by foaming.

According to the first aspect, the inside of the convex portion 4 is filled with a soft foam synthetic resin band 6, and the foamable resin heat insulating material 3 is injected into the narrow convex portion 4 to form the foam. There is no need to raise the foaming pressure so that it can be filled to a narrow place, and it is not necessary to take measures for degassing so that foaming is performed well,
The inside of the convex portion 4 is filled with the soft foam synthetic resin band 6, so that the convex portion 4 can be prevented from being hollow, and the heat insulating property of the convex portion 4 can be sufficiently enhanced.

According to the second aspect, since the soft foam synthetic resin band 6 different from the foamable resin heat insulating material 3 is filled in the convex portion 4 in advance, and then the foamable resin heat insulating material 3 is filled and foamed. The inside of the convex portion 4 is pre-filled with a soft foam synthetic resin band 6, and it is not necessary to inject the foamable resin heat insulating material 3 into the narrow convex portion 4 to cause foaming. It is not necessary to increase the foaming pressure so that it can be filled up to, and it is not necessary to take measures for degassing. A sufficiently enhanced insulation panel can be manufactured.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. As shown in FIG. 2, at both ends of the upper and lower metal shells 1 and 2 sent out by the feeding device, a convex outer shell portion 4a and a concave outer skin portion 5a are formed by a roll forming machine 9, and these two sheets are formed. Polyurethane or polyisocyanate in which polyol, isocyanate, catalyst, foaming agent, etc. are blended between the two metal shells 1 and 2 while the metal shells 1 and 2 pass through the forming conveyor 7 with the conveyor facing up and down. A foaming resin material such as nurate is injected from a nozzle and foamed, and a foaming resin heat insulating material 3 is foam-filled between two metal outer skins 1 and 2 and cut into an appropriate length by a cutting device 8. The insulation panel A is produced.

As shown in FIG. 1, convex portions 4 and 4 are formed vertically apart from one end surface of the heat insulating panel A, and a soft foam synthetic resin band is previously formed inside the convex outer portion 4a. 6 are filled. On the other end surface of the heat insulating panel A, a concave portion 5 into which the convex portion 4 is inserted is formed. Further, at the end of the heat insulating panel A on the side where the concave portion 5 is formed, a cover piece 20 serving as the convex portion 4 is projected outward by bending the metal outer skin 2. A cover piece 20 is provided on one end surface of the heat insulating panel A.
Is formed therein. A nailing portion 22 is formed in the concave portion 5 into which the cover piece 20 is inserted.
In the figure, P is a packing.

As described above, the inside of the convex portion 4 is filled with the soft foam synthetic resin band 6 different from the foamable resin heat insulating material 3, and the convex portion 4 narrowing the foamable resin heat insulating material 3. There is no need to increase the foaming pressure so that it can be filled up to a narrow place, and it is not necessary to increase the foaming pressure so that it can be filled into a narrow place. Is filled with a soft foam synthetic resin band 6, which makes it possible to avoid making the convex portion 4 hollow, sufficiently enhance the heat insulating property of the convex portion 4, and expand the foaming resin heat insulating material 3. The gas generated at the time can be released into the inside of the convex portion 4 where the soft foam synthetic resin band 6 exists, and the gas can be vented in this way, and the foamable resin heat insulating material 3 can be sufficiently foam-molded. Good.

By the way, the convex portion 4 is previously filled with a soft foam synthetic resin band 6 different from the foamable resin heat insulating material 3, and then the foamable resin heat insulating material 3 is filled and foamed. It is not necessary to inject the heat insulating material 3 into the inside of the narrowing convex portion 4 to cause foaming, and it is not necessary to increase the foaming pressure so as to fill the narrow portion. It is not necessary to use the usual equipment,
The heat insulating property of the convex portion 4 can be sufficiently increased without making the inside of the member hollow.

[0013] to be filled with soft foam synthetic resin strip 6 to the convex portion 4, as shown in FIG. 3, the speed V ₂ feeding speed V ₁ and the soft synthetic resin foam strip 6 feeding of the metal covering 1 At the same speed, the soft foam synthetic resin band 6 is adhered to the metal skins 1 and 2 with an adhesive adhered to the metal skins 1 and 2 or the soft foam synthetic resin band 6, and then the metal skins 1 and 2 are rolled. It is preferable that the convex portion 4 is filled with the soft foam synthetic resin band 6 by molding with a molding machine 9. Alternatively, the soft foam synthetic resin band 6 may be wound into the convex portion 4 when the convex portion 4 is formed.

FIG. 4 shows another embodiment of the heat insulating panel A, in which the inside of the convex portion 4 is filled with a soft foam synthetic resin band 6 as in the above embodiment.

[0015]

According to the first aspect of the present invention, the foamable resin heat insulating material is filled between the two metal skins, and the convex portion is inserted into one side edge of the heat insulating panel and the convex portion is inserted into the other side edge. The concave portion is a heat insulating panel formed by being surrounded by a metal shell, and the inside of the convex portion is filled with a soft foam synthetic resin band different from the foamable resin heat insulating material. Is filled with a soft foam synthetic resin band, and it is not necessary to inject foamable resin insulation material into the narrowed convex part and foam it, and increase the foaming pressure so that it can be filled in a narrow place There is no need to take measures for degassing, and the inside of the convex part is filled with a soft foam synthetic resin band, so that it is possible to avoid making the convex part hollow and to provide heat insulation at the convex part. There is an advantage that the property can be sufficiently increased.

According to the second aspect of the present invention, the foamed resin heat insulating material is filled between the two metal outer skins, and the heat insulating panel has a convex portion at one side edge and a concave portion into which the convex portion is inserted at the other side edge. A method for manufacturing a heat insulating panel formed by being surrounded by a metal shell, wherein a convex portion is previously filled with a soft foam synthetic resin band different from the foamable resin heat insulating material, and thereafter, the foamable resin heat insulating material is Since filling and foaming, the inside of the convex portion is filled with a soft foam synthetic resin band in advance, and it is not necessary to inject foamable resin heat insulating material into the narrowing convex portion and foam it. There is no need to take measures for degassing, it is not necessary to increase the foaming pressure so that it can be filled to a narrow place, and with ordinary equipment, without hollowing the inside of the convex part,
There is an advantage that a heat-insulating panel with sufficiently increased heat-insulating properties at the projections can be manufactured.

[Brief description of the drawings]

FIG. 1 is a partially omitted cross-sectional view of a heat insulating panel according to an embodiment of the present invention.

FIG. 2 is a schematic side view of the heat insulating panel manufacturing apparatus of the above.

FIGS. 3A and 3B are explanatory views showing an operation of filling a convex portion with a soft foam synthetic resin band.

FIG. 4 is a cross-sectional view of another embodiment of the heat insulating panel.

FIG. 5 is a partially omitted cross-sectional view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Metal outer skin 2 Metal outer skin 3 Foamable resin heat insulating material 4 Convex part 5 Concave part 6 Soft foam synthetic resin belt

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E04B 1/80 E04D 3/35 E04F 13/12

Claims (2)

(57) [Claims] 1. A foam resin insulative material is filled between two metal outer skins, and a convex portion is inserted into one side edge of the heat insulating panel and a concave portion into which the convex portion is inserted into the other side edge is a metal outer skin. What is claimed is: 1. A heat insulating panel formed by being surrounded and filled with a soft foam synthetic resin band different from said foamable resin heat insulating material inside a convex portion. 2. A foam resin insulative material is filled between two metal outer skins, and a convex portion is inserted into one side edge of the heat insulating panel and a concave portion into which the convex portion is inserted into the other side edge is a metal outer skin. A method for manufacturing an enclosed heat-insulating panel, wherein a convex portion is previously filled with a soft foam synthetic resin band different from the foamable resin heat insulator, and then the foamable resin heat insulator is filled and foamed. A method for manufacturing a heat insulating panel, comprising: