JPS608998Y2 - moisture barrier material - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a moisture-proof material.

Conventional moisture-proofing materials, heat insulation properties, and moisture-proofing properties will be explained.

<Moisture-proofing material> All materials have moisture-permeation resistance, but among them, materials with especially high moisture-permeation resistance and low cost are used as moisture-proofing materials.

For example, polyethylene, polypropylene, neochilifan 1, vinyl sheets, asphalt roofing,
Moisture-proof cellophane, aluminum foil, etc.

As described above, conventional moisture-proofing materials are sheet-like materials and are manufactured solely for the purpose of moisture-proofing.

In addition, metals such as aluminum foil and stainless steel membranes have extremely high moisture permeation resistance in moisture-proof sheets, but their strength is low, making them extremely easy to break, making it difficult to install joints.
It has the disadvantage that the thicker it becomes, the more expensive it becomes.

<Thermal Insulation and Moisture-proofing Properties> In order to fully exhibit insulation performance, it is necessary to have a layer with high moisture permeation resistance.

However, conventional insulation materials have low moisture permeation resistance.

For example, fibrous heat insulating materials such as glass wool and rock wool have particularly low moisture permeation resistance, and resin foams such as new rear foam, urethane foam, and polystyrene foam also have low moisture permeation resistance because the membrane of the foam cells is thin.

Foam glass alone has theoretically high moisture permeability resistance, but
In actual use, the continuity of the joint is incomplete due to the glassy nature, and furthermore, the glassy nature makes it difficult to manufacture large-sized items, so moisture from around the material is large, and as a result, It cannot be said that the moisture permeation resistance is large.

In other words, it can be said that there are no materials with high moisture permeation resistance among current insulation materials.

The present invention was made in order to improve such conventional products, and it is an object of the present invention to provide a moisture-proof material that can significantly improve both the moisture-proofing effect and the heat-insulating effect by providing the moisture-proofing material with the function of a heat insulating material. With the goal.

Next, an example will be described.

Moisture-proofing material A is composed of at least two gas chamber sheets a.

As the base material of the gas chamber sheet a, a resin sheet having a high moisture permeability resistance, for example, a flat sheet 1 made of polyethylene is used.

A large number of independent gas chambers 2 are provided on one surface of the flat sheet 1 to constitute a gas chamber sheet a.

In order to form two groups of independent gas chambers, for example, the gas is sandwiched between two flat sheets, and the two sheets are heat-sealed at a suitable distance to seal the gas inside the independent gas chambers 2. method can be adopted.

The moisture-proof material A is formed by bonding and fusing the two gas chamber sheets a configured in the above shape, but in this case, not only the surfaces of the polyethylene sheet 1 of the gas chamber sheet a are bonded,
The independent gas chamber 20 is joined 22 in a state where the head 21 faces are close to each other.

Furthermore, at this time, instead of directly joining the heads 21 to each other, the head 21 of another gas chamber sheet a is positioned between the heads 21 of one gas chamber sheet a. , head 21
The edges 23 of are joined 22 to each other.

As a result, the open surface of the space surrounded by the two groups of independent gas chambers will be closed by the head 21 of another gas chamber sheet a, and the air chamber 3 will be formed there (Fig. 3). The joining 22 does not necessarily need to be performed on the entire head 21, as long as at least a portion thereof is joined.

Furthermore, the above-mentioned moisture-proofing material A may be configured such that the distance d between one sheet on one side and one sheet on the other side is about 1 crIt.

This is because, as shown in FIG. 7, until the thickness of the air layer reaches 10, the thermal resistance increases rapidly as the thickness increases.

Note that when the thickness is 1 CrrL or more, the air layer causes convection and almost no increase in thermal resistance occurs, but for strength purposes,
The thickness is set to IC771 for the purpose of cushioning material, spacing material, etc.
There may be cases where the configuration is more than the above.

Alternatively, the two gas chamber sheets (a) may not be joined directly, but may be constructed by interposing an intermediate material C made of paper, aluminum foil, or other known material between them, as shown in FIG.

In this case, the above-mentioned distance d may be 1 cm or less.

■Insulation layer As the heat insulating layer B, a known one can be used.

That is, many materials including organic materials, inorganic particles, fibers, and foams can be used.

</Composition of Moisture-proof Layer and Heat Insulating Layer The above-described moisture-proof layer A can be used by itself as a new material for moisture-proofing.

However, as shown in Figure 5, by bonding a moisture-proof layer A consisting of two gas chamber sheets a to one side of the insulation layer B, a large moisture permeability resistance is added to the insulation layer B, thereby improving insulation performance. can be significantly improved.

Furthermore, as shown in FIG. 6, a structure can be adopted in which a moisture-proof layer A cut from two gas chamber sheets a is joined to both sides of the heat insulating layer B.

For example, if the peripheral edges of two pieces of moisture-proofing material 1 are heat-welded 24, that is, the heat-insulating layer B is housed inside the bag-shaped moisture-proofing material A, it will be convenient to handle and install, and it will also provide insulation. It can be used as a high-performance insulation material.

As mentioned above, the present invention uses two gas chamber sheets a, each of which has two groups of independent gas chambers protruding from one surface of the sheet, as a moisture-proof material.
The moisture-proof material A is formed by joining the independent gas chambers 2 to each other through the vicinity of the end edges 23 of the head portions 21 of the independent gas chambers 2.

Therefore, the following effects can be expected.

By combining the thermal resistance of the gas in the independent gas chamber 2 and the moisture-proof sheet 1, it is possible to obtain a moisture-proof layer A that has thermal resistance by itself, that is, a moisture-proof material that has the function of a heat insulator. Ta.

Therefore, if this moisture proofing material is used in combination with some heat insulating material, the thickness of the heat insulating material can be significantly reduced or its performance can be improved compared to conventional materials.

<W In general buildings, insulation materials are used, but moisture-proof materials are rarely used.

However, since the moisture-proofing material of the present invention also has a heat insulating function, it can exhibit moisture-proofing and dew condensation prevention effects even when used as a heat insulating material.

It can also be used as a ventilation blocking material in warehouses and the like where airtightness is required, and in that case, it can also be used as a moisture proofing material and a heat insulating material.

[Brief explanation of drawings]

Figure 1: Plane view of the gas chamber seat, Figure 2: Its sectional view,
FIG. 3: A cross-sectional view of a moisture-proofing material, FIG. 4: A cross-sectional view of another embodiment of a moisture-proofing material, and FIGS. 5 and 6: A cross-sectional view of an embodiment in which a moisture-proofing material and a heat insulating material are combined. Figure 7: Relationship graph between air layer thickness and thermal resistance. 1: sheet, 2: gas chamber, a: gas chamber sheet, A: moisture proof material, B: heat insulating material.

Claims (1)

[Scope of Claim for Utility Model Registration] A gas chamber sheet is formed by protruding a large number of independent gas chamber groups on one side of a flat sheet with high moisture permeation resistance, and two of the gas chamber sheets are used to form independent gas chamber groups. At least a portion of the head is joined to each other through the vicinity of the edge, and an air chamber is formed by closing the open surface of the space surrounded by the gas chamber group with the head of another gas chamber sheet. Composed of moisture-proof material.