JPS6315732A - Synthetic resin foam for heat insulating work - Google Patents

Abstract

PURPOSE:To obtain a foam, excellent in moisture permeating property, heat insulating property as well as strength, by a method wherein the total sum of the sectional areas of respective penetrating holes in a synthetic resin foamed body for insulating work, which is provided with a plurality of the penetrating holes in the direction of the thickness of the foam, is designed so as to be within a specified range. CONSTITUTION:A flat type foam 2 is provided with film type substances 3, 3, on both surfaces thereof and a plurality of hinges 5 with the section of W- shaped are formed alternately on the upper surface 6 and the lower surface 7 of a laminated body 4. Said flat type foam 2 and the film type substances 3, 3 are provided with penetrating holes 8, 8.... The penetrating holes are provided so as to satisfy the relation of 0.005<=(X/Y)<0.30 between the total sum Xmm<2> of the sectional areas of respective penetrating holes and the area Ymm<2> of one side of the foam under a condition that the penetrating holes does not exist. As a result, a foam for heat insulating work, excellent in moisture permeating property, may be obtained without spoiling the heat insulating property thereof.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a synthetic resin foam for heat insulation construction in detail (J, 1↓y[synthetic resin for heat insulation construction that has both thermal properties and moisture permeability -U] Regarding foam.

[Problems to be solved by conventional technology and invention]

Traditionally, foam boards are no longer used in construction;! ! Two methods have been used to use it as U. Although these foams have extremely high shear resistance and exhibit excellent heat insulation effects, they have little moisture permeability, so moisture tends to accumulate inside walls, causing problems such as condensation on walls. I have to.

These dew condensations cause problems such as ■ and soil soil.

■ In wooden structures, it can lead to mold growth and rot on pillars, wooden F baseboards, etc.

■ In steel structures, it causes rust on the steel frame.

■ Block structures lead to the growth of mold on the walls.

To solve this problem, we added silica gel to the foam to control humidity. , an insulated boat with the ability to control humidity for people has been proposed.
No. 804).

However, such a ball is very inefficient because the moisture is absorbed by the silica gel and then released from the silica gel, and although silica gel has excellent adsorption properties, it has poor desorption properties. (For example, when desorbing gas from silica gel, it must be heated.) Although it temporarily adsorbs moisture well, it is not durable. I can't.

The present invention solves the conventional drawbacks described in "-" and aims to provide a foam for insulation construction that has excellent moisture permeability without sacrificing heat insulation properties.

[T stage for solving problems]

The synthetic resin foam for heat insulation construction of the present invention is a synthetic resin foam for heat insulation construction that has a plurality of through holes in the thickness direction of the foam, and the sum of the planar cross-sectional areas of each through hole Xw'' and r1 through hole are It is characterized by satisfying 0.005≦<0.30 in relation to the area YII2 of one side of the foam in the absence of foam.

The foam of the present invention has a plurality of through holes in the thickness direction of the foam, and these holes improve the moisture permeability of the foam.

In the present invention, as a synthetic resin foam for insulation construction, it is necessary to specify the ratio of the total planar cross-sectional area of each through hole to the area of one side of the foam in order to obtain this strength and insulation property. .

In the present invention, the ratio of this 1-tal plane cross-sectional area to the area of one side of the foam is defined as follows.

That is, the relationship between the sum of the planar cross-sectional areas of each through hole, X mm2, and the area of one side of the foam, Y mm2, in a state where no through holes are present, is: 1 ---- < o, 3.

7! ~It is necessary to

When the above relationship is ----≧0.30, the insulation performance of the foam becomes low and the bending strength decreases.

In addition, in the present invention, 2' OOg/M ・24 h
If the good moisture permeability of r or more is 7Jω, then in the above relationship, 0.005≦--------- (l'r7i).

If the above relationship is x 0, 005 knee: L' through 1'L O) box row V adds f*, resulting in poor moisture permeability.

Further, in the present invention, it is preferable that the through holes are evenly scattered in the foam.

Regarding the size of each of the above-mentioned through-holes, there is no particular problem as long as the above-mentioned formula is satisfied, but various sizes can be selected depending on the purpose. For example, in order to provide a waterproof function, the planar cross-sectional area of each through hole is set to be approximately 5.7 mm'' or less, preferably 3.0 mm2 or less.

Note that the planar cross-sectional area of a through-hole in the present invention is the area of the through-hole when the foam is cut in a direction perpendicular to the thickness direction, and if the area differs depending on the cutting location, the maximum Let that be its planar cross-sectional area.

The shape of the foam for insulation construction of the present invention can be a plate-shaped thermoplastic resin foam that is generally used, but it is preferable to have a plurality of hinge parts alternately arranged on the upper surface. It is preferable to have a shape in which a plate-shaped thermoplastic resin foam is alternately folded at each hinge part because of its excellent workability.

Also, in the later version of this type of shape, the hinge part is reinforced with soil J and 1? It is also possible to form an i-layer, and furthermore, a film-like material can be layered on the foam board.
Then, the suction 11 is laminated in both shapes, and 2-(2-(1) is acceptable.The fill L, shaped material is laminated in 71.1-(4), and the through hole is the fill J, shaped material. It is necessary to install the product through the foam.

〔Example〕

Embodiments of the present invention will now be described in detail with reference to the drawings.

Figure 1 shows the present invention 11Ji heat application 11', III 'r'
＋Resin foam－・Some examples are shown, 1 in the figure
Soil J9 autumn material was applied on both sides of the foam (1° 1 layer, -
C naro 1 tatami y + synthetic wood for insulation clients) made with IFi foam. The foam j is a laminate 4 consisting of a 1'I) v-shaped synthetic + AI resin foam 2 and a film-like material provided on both sides of the foam 2; 5.
... has a configuration consisting of (h) folds.

As shown in FIG. 2, the L-shaped laminate 4 is formed by providing filter-like materials 3, 3 on both sides of a flat foam 2, and has a W-shaped cross section on the top surface of the laminate 4. A hinge portion 5 is formed along a direction perpendicular to the longitudinal direction of the laminate 4,
Further, hinge portions 5 having the same shape are similarly formed on the lower surface 7, and a plurality of these hinge portions are alternately formed on the soil surface 6 and the lower surface 7 of the laminate 4.

1 under the plate-like foam 2 and the film-like material 3, 3),
l'1 through holes 8, 8 ・ are provided. Each through hole8. The planar cross-sectional area of F (... is 5.7 mm2 or less, and the total planar cross-sectional area of each through hole is
(The area of one side of the foam in the state where no holes are present, Y and 2, is provided so that the relationship of 0.005≦--<0, 30 is not satisfied.

The plane cross-sectional shape of each through hole 1'L can be selected from various shapes such as circular and polygonal.

The end of the laminate 4 configured as described in 1.
At the hinge portions 5 and 1 provided on the surface 6, arrow Ell A
It can be folded in the direction of the arrow [3] at the hinge part 5b installed on the lower surface 7, and then it can be folded in the direction of the arrow [3]. I can feel my body moving 11 times.

As shown in Figure 1! L-foam No. 1 is made by laminating Soilno, shaped material 3, 3 on both left sides4), but the foam of this type of shape according to the present invention has fill J, shaped material laminated only on one side. It may be made by laminating layers of 1, 7, or 1' without a film-like material and may be made of foamed material at °C. Also, as shown in No. 41m, the hinge portions 5, 5
...even if the film-like materials 3, 3 are laminated at the forming site, 1.

Further, the shape of the hinge part in the foam of this type of shape according to the present invention is a W-shaped cross section as shown in FIG.
■It is not limited to the groove shape formed along the direction perpendicular to the direction of the laminate, but various shapes are possible.In short, the laminate is folded 47 degrees at the hinge part. Any shape is possible as long as it can be easily folded and does not cause damage such as cracks to the laminate after folding.

In the present invention, GJ thermoplastic resin is used as the resin forming the foam, such as polystyrene, polyP
- Methylstyrene, 1li1 impact polystyrene, styrene-maleic anhydride copolymer, styrene-acrylic
] Nitrile polymers, styrene-butadiene-acrylic [J nitrile copolymers or mixtures of two or more of these as the base resin, etc.]
Pyrene, polyethylene, polybutene, ethylene butene I
Pyrene copolymer, Ni-1-7-phthene copolymer, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-acrylate) (polyolefin resins such as polymers, hard and soft Vinyl chloride resin, vinyl chloride
Examples include vinyl acetate copolymer, acrylic acid or methacrylic acid, or ester resins thereof, among which polystyrene resins are most preferred from the viewpoint of heat insulation performance and low cost.

Examples of the film-like material include polystyrene, high-impact polystyrene, polypropylene, various polyethylenes, polyesters, polyamide 1ζ, vinyl chloride, and the like, as well as nonwoven fabrics, woven fabrics, and paper.

The size of the foam of the present invention can be selected from various sizes depending on the object to be insulated. In the case of normal flat foam, ε1 length 0.3m-3m, width 0.3m-3rn
, a thickness of about 0.1 cm.about.10 cm is preferable.

In addition, in the case of a foam with a folding margin as shown in Fig. 1 above, the length of the stack 1i is 0.9 to 36 m in the direction, and the I4 width in the width direction is O, '3. 3rn, the length between each hinge part is preferably 0.3·~l, "l]ff1. Also, the thickness of the laminate is preferably 7"ζ, and the thickness of the flat foam is 0.1~l. 5c・1n, soil J, thickness of the shape is 5
It was confirmed that the diameter was ~2000 μm;

In the present invention, by forming the foam into a foldable shape as shown in FIG. 1, the following advantages are brought about.

That is, in such a foamed body, each foamed body is large in size, so the number of times of positioning is reduced, and workability is significantly improved. In addition, there are extremely few seams between the foam bodies, and as a result, there are few gaps between the foam bodies, and a reduction in the heat insulation effect can be prevented as much as possible. Further, even if a gap occurs, since the amount of joints is small, filling material can be applied to the gap in a short time.

Furthermore, when constructing a wooden house, etc., if the distance between the hinge parts is configured to be the same length as the distance between the columns, each hinge part can be fixed, making it easy to select the fixing location. .

In addition, when a flat foam is provided with a film-like material on at least one side, not only does the strength of the foam itself improve, but the strength of the hinge increases, making it difficult to bend the hinge due to power generation. However, there will be no problems such as cracks in the hinge.

The method for manufacturing the foam of the present invention will be explained using the above-mentioned foldable foam as an example.

For example, a laminate is formed by laminating film-like materials on both sides of a foam extruded from an extruder, and the laminate is pressed at a predetermined location using, for example, a pressing jig, or the hinge portion is pressed using a heat press cap. is formed and then cut into a predetermined length to obtain a laminate with a hinge portion of 7'. After forming a through hole, the foam is formed by folding the foam alternately at each hinge portion.

In addition, a hinge portion is formed at a predetermined location of the flat foam before laminating the fill J or shaped material by cutting with a knife, melting with heat, or pushing/swinging with a pressing jig. You can also do that.

In particular, the above-mentioned hinge part is installed and the J1'' is always effective for insulation construction of wooden detached houses and the like.

The foam of the present invention has a plurality of penetration TLs with specific stripes ('l), so it has extremely high moisture permeability, is rich in heat insulation properties, and has strong strength. The present invention will be explained in more detail below with reference to seven specific examples.

Examples 1 to 5, WIIIA Examples 1 to 3 Rubilichi Example 1 Thickness 4
．． 2@l, laminate high-impact polystyrene fill J with a thickness of 60 μm on both sides of an extruded polystyrene foam board with an expansion ratio of 16 times, and apply it uniformly to the foam board so that <X/Y is not satisfied as shown in Table 1. Through holes of the same size were provided, and the thermal conductivity and moisture permeability were measured and a bending test was conducted. The results are shown in Table 1.

In addition, as a reference example, one without through holes is also shown in the same table.

Table 1 Xl Lienburg 2 (1(1+u (3!it)
X 2 'O
il +1ffi×50 m114: 1. ,,teA
S'FM Cl77 to Ll'shi' (i rules 7.

×2 Cut out the Zamp moon into a disc shape with a target diameter (: Om*) 3.10° (゛, 5.0% 1
llll decided 2 people 2.

> (150m set of 3 linsols (XilHX 50
ha (village? → cut out 7 branches・j・, between W [11?i
Let II be loO++ seagull 2. J I SK 7221
It was set at 41 points.

[Kingou of invention]

91, -) explained above, 4 definite disclaimer 1 (for the synthetic resin foam for application, 11 letters 1'
L4?゛['Total cross-sectional area X area'1. ! : IT 1ill hole is not present on the right side) Seed/1st eye (・1゛1 side bend fI'
i Y as 2 relationship with R・smell-C1
Is there a way to prevent condensation l'Jj 11 from inside the wall as the cross-section H of the building? ! +71'L
It is a foam that has excellent heat insulation properties and strength, and has good workability.

4. Savings of drawings 1. Explanation Drawing number 1. This shows an embodiment of the present invention. Figure 1 does not show an embodiment of the synthetic resin foam used in the present invention.
Fig. 2 is a perspective view of the expanded state of the foam shown in Fig. 1; Fig. 3111 is a perspective view of the main parts; No examples are shown.1'
X1 helmet, 1 view.

l...Synthetic resin foam for insulation construction 8. Through hole

Claims (4)

[Claims] (1) A synthetic resin foam for heat insulation construction that has a plurality of through holes in the thickness direction of the foam, where the sum of the planar cross-sectional areas of each through hole is X mm^2 and the value of the foam without any through holes. In relation to one side area Ymm^2, 0.005≦X
A synthetic resin foam for insulation construction, characterized in that it satisfies the following: /Y<0.30. (2) The heat insulation according to claim 1, wherein the foam is formed by folding a flat plate-shaped thermoplastic resin foam having a plurality of hinge parts alternately provided on the upper and lower surfaces at each hinge part. Synthetic resin foam for construction. (3) A synthetic resin foam for heat insulation construction according to claim 2, wherein a film-like material is laminated on at least one side of each hinge portion forming portion of a flat thermoplastic resin foam. (4) A film-like material is laminated on at least one side of a foam, and the film-like material is also provided with through holes that communicate with the through holes provided in the foam. Synthetic resin foam for insulation construction according to item 2.