JP2002167880A - Heat insulating foaming resin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide heat insulating foaming resin having an incision along the longitudinal direction, and which can keep insulating efficiency without deformation or dropping out over the long period of time even though it is inserted with a pressure in between supported frames in a simple and easy construction method. SOLUTION: As for a plate-shaped flexible resin heat insulting material, inserted and pressured in between the support frames 3 in which an incision 1 which does not reach the longitudinal rear face is frame along the length wise direction, to both ends in the breadth wise center of the front surface, this soft resin heat insulating material is provided with the incision 2 parallel to the incision 1, on the both sides of the width direction and does not reach the back surface for forming a turn parts, and the width of it with the turn a formed is 100-110% of the distance between the support frames 3 as a feature.

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 inserted between supporting frames such as columns and joists provided in a building.

[0002]

2. Description of the Related Art Heretofore, various types of plate-shaped foamed resin insulation materials which are slightly wider than a support frame and which are used by being pressed between support frames are known. With respect to this foamed resin heat insulating material, there is known a cutout which does not reach the back surface along the longitudinal direction in order to facilitate press-fitting between support frames (Japanese Patent Publication No. 61-27533, Japanese Utility Model Publication No. 61
-20169, Japanese Utility Model Laid-Open No. 2-87808, etc.). In order to press-fit such a foamed resin insulation material between the support frames, the insulation material is bent upward so as to protrude along the cut and inserted between the support frames, and then the cut is raised upward by refraction. The nearby surface portion is pressed downward to form a flat plate. By this operation, the heat insulating material is closely fixed by the repulsive stress acting on the compression between the supporting frame members at both side end portions, and is fixed. However, when the foamed resin heat insulating material is disposed in the above state for a long period of time, there is a problem that the repulsive stress against compression is weakened and the foamed resin heat insulating material falls off between the support frames. Furthermore, there is a problem that the longitudinal center portion is bent downward (toward the ground) due to its own weight of the foamed resin heat insulating material and falls off. Therefore, it is necessary to use a nail, a fixture, or the like to take measures to prevent bending or falling off.

Japanese Utility Model Laid-Open Publication No. Hei 6-79911 discloses a longitudinally extending end portion (short side portion) of a plate-like foamed resin heat insulating material which is press-fitted between support frames forming a cut which does not reach the back surface in the longitudinal direction of the front surface. 2) discloses a foamed resin heat insulating material provided with a cut that does not reach the back surface where a folded portion can be formed.
This foamed resin heat insulating material prevents the cut portion from rising upward. However, actually, there is not much problem of floating upward, and rather, as described above, the problem that the central portion in the longitudinal direction bends toward the ground and falls off due to the weight of the foamed resin heat insulating material is larger.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a plate-like foamed resin heat insulating material which is press-fitted between support frames which form a notch extending to both ends in the longitudinal direction of the front surface. Bends between the supports when pressed into
It is an object to provide a foamed resin heat insulating material that does not fall off.

[0005]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above-mentioned problems, and as a result, have been press-fitted between support frames forming cuts which do not reach the back in the longitudinal direction of the front to both ends. In the plate-shaped foamed resin heat insulating material, cuts that are not parallel to the longitudinal direction and do not reach the rear surface where the folded portion can be formed on both sides in the width direction are provided. Even if it is done, there is no bending or falling off between the support bases for a long time, and by a simpler construction method than before, it adhered to the floor material etc. arranged on the upper surface of the support frame where the foamed resin insulation material was pressed The inventors have found that the shape can be maintained, and as a result, the heat insulation performance can be maintained, and the present invention has been completed.

That is, according to the present invention, in a plate-like foamed resin heat insulating material which is press-fitted between support frames forming up to both ends of cuts which do not reach the back surface in the longitudinal direction of the front surface, the width is parallel to the longitudinal direction and the width is A cut-out which does not reach the back surface where the folded portion can be formed on both sides in the direction, wherein the width of the resin heat-insulating material in the state where the folded portion is formed is between the support frames. 2. The foamed resin heat insulating material according to claim 1, wherein the distance is 100 to 110% of the distance, and the folded portion of the resin heat insulating material having a folded portion is folded and includes a folded portion when the folded portion is placed on the back surface. 3. The foamed resin heat insulating material according to claim 1 or 2, wherein the thickness is equal to or greater than the height of the support frame member into which the press-fitting is performed. Features Foamed resin insulation material of claims 1 to 3 wherein the (Claim 4), a polypropylene resin 50 wt%
A flexible foamed resin heat insulating material according to claims 1 to 4 (claim 5), which includes the above, is provided.

[0007]

FIG. 1 is a plan view showing a foamed resin heat insulating material according to the present invention. In FIG. 1, reference numerals 1 and 2 denote cuts formed in the longitudinal direction of the surface of the foamed resin heat insulating material. 2 is a folded portion that can be folded back to the back surface.

FIG. 2 is a cross-sectional view when the folded portion 2 shown in FIG. 1 is folded along the cuts and overlapped on the back surface.

FIG. 3 is a cross-sectional view showing a state immediately before the folded portion 2 of the foamed resin heat insulating material is folded back as shown in FIG.

FIG. 4 shows the folded portion 2 of the foamed resin heat insulating material shown in FIG. 3 folded as shown in FIG.
2 is a partially cutaway view in which the foamed resin heat insulating material bent upward as shown in FIG.

As the foaming resin used in the present invention, a hard foamed resin such as polystyrene or phenolic resin, or a soft foamed resin such as polyethylene, polypropylene or softened polystyrene can be used. Among these, it is preferable to use a soft foamed resin from the viewpoint of being hardly damaged at the time of folding and being able to be compressed even if the width or thickness is somewhat large. Among the soft foamed resins, a polypropylene resin is preferable. The polypropylene-based resin is not particularly limited, but a melt tension of 5 g or more measured at 230 ° C. facilitates control of the expansion ratio and cell diameter, and produces a foamed resin insulation material having good heat insulation performance. It is preferable because it is easy to perform.

A polypropylene resin may be mixed with a polystyrene resin. In this case, it is preferable that the polypropylene resin is mixed in a range of 50 to 95 parts by weight and the polystyrene resin is mixed in a range of 50 to 5 parts by weight. . The polypropylene resin is preferably contained in an amount of 50% by weight or more of the entire resin, but if the amount is less than 50% by weight, flexibility, heat resistance, solvent resistance and the like may be impaired.

The density of the foam in the present invention is not particularly limited, but is preferably 9 to 90 kg / m ³ , and the length in the longitudinal direction is not particularly limited, but is preferably 300 mm or more, more preferably about 600 to 2000 mm. .

It is desirable that the thickness including the folded portion when the folded portion is folded and overlapped on the back surface is equal to or larger than the height of the support frame member. When placing flooring, etc. on the upper part of the support frame, compress the foamed resin insulation material to the height of the support frame member in the thickness direction and place it, which increases the adhesion with the floor material etc. placed on the upper part, and causes condensation Can be prevented, and higher heat insulation performance can be exhibited. When the thickness is smaller than the height of the support member, a space is formed between the foamed resin heat insulating material and a floor material or the like disposed on the upper portion, and problems such as occurrence of dew condensation and deterioration of heat insulating performance are likely to occur. Generally, the thickness including the folded portion when the folded portion is folded and overlapped on the back surface is at least 100% of the height of the support frame member, and more preferably about 100.5 to 125%. The length in the width direction in a state where the folded portion is formed is 10 times of the distance between the support frames to be pressed.
Desirably, the size is about 0 to 110%.

The depths of the cuts 1 and 2 formed on the surface of the foamed resin heat-insulating material of the present invention may be such that the bent portions and the folded portions can be formed, but not to reach the back surface. In general, the cut may be made while leaving a thickness of 0.1 mm to 1/2 of the thickness of the foamed resin insulation material, preferably 1 mm to about 1/3 of the thickness of the foamed resin insulation material. If the cut portion is deeper than the above, the folded portion tends to hang down due to the weight of the folded portion, and transport tends to be inconvenient. In order to eliminate such inconvenience, the depth of cut may be reduced. When the cut depth is shallow, the remaining portion of the cut 2 may be bent in order to turn the folded portion a downward. The width length of the folded portion a formed at both ends in the width direction is such that when the foamed resin heat insulating material forming the folded portion is pressed between the support frames, the foamed resin heat insulating material is bent downward between the support bases. A bending strength of about 10% or more, preferably 10% or more of the distance between supporting frames.
About 25%. It is desirable that the notch 1 that forms the bending portion during the press-fitting is formed along or near the center line in the width direction.

[0016]

According to the foamed resin heat insulating material of the present invention, the folded portion a formed near both ends in the width direction is folded downward as shown in FIG. Is press-fitted between support frames that are slightly narrower than the width excluding the folded back portion. In this case, the presence of the folded portions a at both ends in the width direction prevents bending near the central portion and falling off.

[0017] After the ordinary foamed resin heat insulating material is installed without using a fixture to the support frame, etc., after a long period of time, the foamed resin heat insulating material bends between the supports due to the weight of the foamed resin heat insulating material itself, and further falls off. However, when the folded portions a are provided at both ends in the width direction of the foamed resin insulation material as shown in FIG. 4, the bending strength in the longitudinal direction of the foamed resin insulation material is reinforced, and the support frame can be used without using a fixture or the like. The shape can be maintained in close contact with the floor material and the like arranged on the upper surface, and it is possible to maintain the heat insulating performance for a long time.

[Brief description of the drawings]

FIG. 1 is a foamed resin heat insulating material of the present invention in which a cut is formed in a longitudinal direction.

FIG. 2 is a cross-sectional view when the folded portion 2 shown in FIG. 1 is folded along a cut and overlapped on the back surface.

FIG. 3 is a cross-sectional view showing a state immediately before the folded portion 2 of the foamed resin heat insulating material is folded back as shown in FIG.

4 is a folded portion 2 of the foamed resin heat insulating material shown in FIG.
FIG. 3 is a partially cutaway view in which a foamed resin heat insulating material bent back so that a bending portion is directed upward as shown in FIG. .

[Explanation of symbols]

 1: notch 2: notch 3: support frame 4: support base a: folded part b: heat insulating part

Claims (5)

[Claims] 1. A plate-like foamed resin heat insulating material which is press-fitted between support frames forming cuts that extend to both ends in a longitudinal direction of a front surface to a rear surface thereof, and has a folded portion parallel to the longitudinal direction and on both sides in the width direction. A foamed resin heat insulating material provided with a cut that does not reach a back surface that can be formed. 2. The foamed resin heat insulating material according to claim 1, wherein the width of the resin heat insulating material in a state where the folded portion is formed is 100 to 110% of the distance between the support frames. 3. The thickness of the folded portion of the resin heat insulating material having the folded portion, the thickness including the folded portion when the folded portion is overlaid on the back surface is equal to or larger than the height of the support frame member into which the press-fitting is performed. Item 3. The foamed resin heat insulating material according to Item 1 or 2. 4. The foamed resin heat insulating material according to claim 1, wherein the foamed resin heat insulating material is a soft foamed resin heat insulating material. 5. The heat-insulating material according to claim 1, wherein the heat-insulating material contains 50% by weight or more of a polypropylene resin.