Gaskets for exterior materials

Abstract

To provide an exterior packing with excellent waterproofing, UV resistance, heat resistance, and elasticity. [Solution] The present invention relates to a packing 43 for exterior materials comprising a rubber layer 431 and an elastic layer 432. The rubber layer 431 comprises at least one rubber material selected from the group consisting of ethylene propylene rubber, silicone rubber, fluororubber, and butyl rubber. The elastic layer 432 comprises an elastic body of a foamed material.

Description

Technical Field

[0001] The present invention relates to packing for exterior materials. More specifically, the present invention relates to packing for exterior materials applied to exterior materials such as exterior wall materials.

Background Art

[0002] Patent Document 1 describes a multi-layer strip packing material for civil engineering and construction. This multi-layer strip packing material for civil engineering and construction has a fiber reinforcing insert embedded between layers made of rubber-like elastic plastic and optionally conventional additives, and its outer layer is thermally and / or weldable by a solvent or a swelling agent. Also, all layers containing rubber-like elastic plastic do not contain a curing accelerator, and are made of a rubber-like elastic plastic based on ethylene-propylene-diene terpolymer and / or ethylene-propylene copolymer. The reinforcing insert laminated between these layers under the use of heat has a plastic fiber and / or a woven fabric, a loaded fabric, a knitted fabric, etc. made of glass fiber with a basis weight of 20 to 70 g / m

[0005] , , , , , , ,

[0004] , , and has a layer peeling force greater than 100 N / 5 cm due to the penetration of the rubber-like elastic plastic into the mesh space of the woven fabric or the like.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a packing material such as that of Patent Document 1, it is desired to be excellent in waterproofness, ultraviolet resistance, heat resistance, and elasticity.

[0005] This invention has been made in view of the above reasons, and aims to provide a packing for exterior materials that is excellent in waterproofness, ultraviolet resistance, heat resistance, and elasticity. [Means for solving the problem]

[0006] The packing for exterior materials according to the present invention comprises a rubber layer and an elastic layer. The rubber layer includes at least one rubber material selected from the group consisting of ethylene propylene rubber, silicone rubber, fluororubber, and butyl rubber. The elastic layer includes an elastic body of a foamed material. [Effects of the Invention]

[0007] The packing for exterior materials of the present invention has a rubber layer and an elastic layer, which provides excellent waterproofing, UV resistance, heat resistance, and elasticity. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a partial perspective view showing a packing for exterior materials according to an embodiment of the present invention. [Figure 2] Figure 2A is a perspective view showing a joint member using a packing for exterior materials according to an embodiment of the present invention. Figure 2B is a side view showing the upper part of the same joint member. Figure 2C is a side view showing the lower part of the same joint member. [Figure 3] Figure 3 is a cross-sectional view showing the installation state of a joint member using a packing for exterior materials according to an embodiment of the present invention. [Modes for carrying out the invention]

[0009] 1. Overview The exterior packing 43 of this embodiment comprises a rubber layer 431 and an elastic layer 432. The rubber layer 431 includes at least one rubber material selected from the group consisting of ethylene propylene rubber (EPDM), silicone rubber, fluororubber, and butyl rubber. The elastic layer 432 includes an elastic body of a foamed material.

[0010] Generally, gaskets for exterior materials need to maintain their waterproofing properties even under UV exposure, possess the elasticity to withstand lateral movement caused by earthquakes, and maintain that elasticity even at high temperatures. EPDM is resistant to UV light and does not degrade easily, but it has the weakness of losing elasticity at high temperatures. On the other hand, polyurethane maintains its elasticity even at high temperatures, but it is susceptible to UV light and degrades easily.

[0011] Therefore, the packing 43 for exterior materials of this embodiment has a multi-layer structure in which a rubber layer 431 having UV resistance, such as EPDM, is provided as an outer layer, and an elastic layer 432 having heat resistance, such as polyurethane, is provided as an inner layer. As a result, it is less susceptible to degradation from ultraviolet rays and less prone to a decrease in elasticity at high temperatures.

[0012] 2.Details (Embodiment) As shown in Figure 1, the exterior packing 43 according to this embodiment is formed in a strip shape. The exterior packing 43 is formed to be long in the vertical direction. The left-right dimension of the exterior packing 43 is shorter than the vertical dimension. The front-to-back dimension (thickness direction) of the exterior packing 43 is shorter than the left-to-right dimension.

[0013] The vertical dimension of the exterior material packing 43 is not particularly limited, but should be longer than the vertical dimension of the exterior material to which it is applied. The horizontal dimension of the exterior material packing 43 is not particularly limited, but should be longer than the horizontal dimension of the joint formed by the exterior material to which it is applied. The front-to-back dimension of the exterior material packing 43 is not particularly limited, and can be, for example, 4 mm or more and 30 mm or less.

[0014] The exterior packing 43 is composed of multiple layers arranged in the front-to-back direction. The layer located at the front is a rubber layer 431. The layer located at the rear is an elastic layer 432. The rubber layer 431 and the elastic layer 432 are each formed in a plate shape. The rubber layer 431 and the elastic layer 432 are joined together along their entire length in the vertical direction with an adhesive or the like.

[0015] The rubber layer 431 includes at least one rubber material selected from the group consisting of ethylene propylene rubber (EPDM), silicone rubber, fluororubber, and butyl rubber. These rubber materials have higher UV resistance and are less susceptible to degradation by ultraviolet light than the elastic layer 432. Therefore, the rubber layer 431 is located in front of the elastic layer 432, where it is exposed to ultraviolet light such as sunlight, and the rubber layer 431 blocks ultraviolet light from reaching the elastic layer 432, thereby reducing degradation of the elastic layer 432 due to ultraviolet light. The rubber layer 431 can be formed by selecting one or more of the above rubber materials.

[0016] The elastic layer 432 contains an elastic body made of a foamed material such as polyurethane. While foams such as polyurethane, polyethylene, silicone, and melamine resin can be used as the foamed material, polyurethane is preferred due to its superior elasticity. The elastic layer 432 has greater elasticity than the rubber layer 431. In particular, the elastic layer 432 exhibits less deterioration in elasticity at high temperatures than the rubber layer 431. That is, rubber materials such as EPDM contained in the rubber layer 431 tend to lose elasticity and resilience at high temperatures (e.g., above 40°C) more easily than foamed materials such as polyurethane. On the other hand, foamed materials such as polyurethane do not experience a significant decrease in elasticity and resilience at high temperatures. Therefore, the elastic layer 432 can compensate for the decrease in resilience of the rubber layer 431 due to high temperatures.

[0017] In the exterior packing 43 of this embodiment, it is preferable that the polyurethane foam constituting the elastic layer 432 has a smaller compressive residual strain than the EPDM constituting the rubber layer 431. Here, the compressive residual strain is measured as follows.

[0018] After preparing an 8mm thick test specimen (polyurethane resin or EPDM), it was compressed to 4.5mm using clamps and heated in a 60°C constant temperature bath for 200 hours. After the heat treatment was complete, the test specimen was removed from the constant temperature bath, the clamps were removed, and it was left to stand at room temperature for 30 minutes before the thickness of the center of the test specimen was measured. The compressive residual set (CS) was calculated using the following formula.

[0019] CS = (t0 - t1) / (t0 - t2) × 100 t0: Thickness of the test piece (8.0 mm in this case) t1: Thickness of the test piece 30 minutes after compression release t2: Compressed thickness at the clamp (4.5 mm in this case) The results are shown in Table 1

[0020]

Table 1

[0021] And, since the packing 43 for the exterior material of the present embodiment includes the rubber layer 431 and the elastic layer 432 as described above, while reducing deterioration due to ultraviolet rays with the rubber layer 431, it is possible to make it difficult for the elastic layer 432 to cause a decrease in elasticity due to high temperature, suppress a decrease in waterproofness and elasticity, and have excellent waterproofness, ultraviolet resistance, heat resistance, and elasticity over a long period of time.

[0022] As shown in FIGS. 2A, B, and C, the joint member 44 includes the joint material 4 and the packing 43 for the exterior material.

[0023] The joint material 4 includes a pair of insertion portions 41, 42 and a joint insertion portion 40. One insertion portion 41 protrudes leftward from the rear end of the joint insertion portion 40 in a front view, and the other insertion portion 42 protrudes rightward from the rear end of the joint insertion portion 40 in a front view. Each of the insertion portions 41, 42 is formed in a rectangular plate shape in a front view (viewed from the front), and has a longer dimension in the vertical direction than in the horizontal direction, and is formed in a strip shape. Auxiliary lines 46 are provided on the front surfaces of the insertion portions 41, 42. The auxiliary lines 46 indicate the fixing positions such as screws. The auxiliary lines 46 are provided over the entire length in the vertical direction of each of the insertion portions 41, 42. The auxiliary lines 46 are, for example, ruled lines and V-grooves.

[0024] The joint insertion portion 40 has a base portion 401, a base portion 402, and an insertion portion 403. The base portion 401 is formed in the shape of a rectangular plate when viewed from the side (left or right), and its vertical dimension is longer than its front-to-back dimension, forming a strip-like shape. The base portion 401 is formed over the entire vertical length of the pair of insertion portions 41 and 42. The base portion 401 also protrudes approximately vertically forward from the boundary portion of the pair of insertion portions 41 and 42.

[0025] The base portion 402 is formed in a rectangular plate shape when viewed from the front, with its vertical dimension being longer than its horizontal dimension, and is formed in a strip-like shape. The base portion 402 extends along the entire vertical length of the base portion 401. The approximate center of the rear surface of the base portion 402 in the horizontal direction is connected to the front end of the base portion 401. The base portion 401 protrudes approximately vertically from the rear surface of the base portion 402. The base portion 402 is positioned approximately parallel to and opposite the pair of insertion portions 41 and 42. The horizontal dimension of the base portion 402 is smaller than the horizontal dimension of the pair of insertion portions 41 and 42.

[0026] The insertion portion 403 is formed in a roughly rectangular plate shape when viewed from the side (left or right), with its vertical dimension being longer than its front-to-back dimension, forming a roughly rectangular shape. The vertical dimension of the insertion portion 403 is shorter than the vertical dimension of the base portion 402, and it is located approximately in the center of the base portion 402 in the vertical direction. The insertion portion 403 is also located approximately in the center of the base portion 402 in the left-to-right direction. The insertion portion 403 protrudes approximately vertically from the front surface of the base portion 402.

[0027] An actual corresponding portion 404 is formed on the upper part of the insertion portion 403. The actual corresponding portion 404 is formed by creating a notch on the upper front side of the insertion portion 403, so that its dimensions in the front-to-back direction are smaller than the dimensions in the front-to-back direction of the other parts of the insertion portion 403.

[0028] A cut section 405 is provided at the lower part of the insertion section 403 (see Figure 2C). The cut section 405 is formed by cutting out a roughly V-shape from the front end of the insertion section 403. When the vertical dimension of the joint material 4 is to be shortened, it is cut at the position of the cut section 405. Since the upper and lower parts of the joint material 4 have different shapes, it is preferable to provide a mark or seal to distinguish the upper and lower directions to prevent incorrect installation. The pair of insertion sections 41 and 42 and the joint insertion section 40 formed as described above can be integrally formed from a metal or plastic component.

[0029] The exterior packing 43 is provided across the entire front surface of the base portion 402. Therefore, the pair of insertion portions 41 and 42 and the exterior packing 43 are spaced apart in the front-to-back direction.

[0030] A slit 430 is formed approximately in the center of the exterior packing 43 in the left-right direction. The slit 430 is elongated and extends in the vertical direction. The slit 430 also penetrates the exterior packing 43 in the front-rear direction. An insertion part 403 is inserted into the slit 430 from the rear. The front end of the insertion part 403 protrudes forward from the slit 430. Therefore, the exterior packing 43 is positioned around the insertion part 403 (above, below, and to the sides).

[0031] The exterior packing 43 has an elastic layer 432 on the rear side (towards the base portion 402) and a rubber layer 431 on the front side (opposite to the base portion 402). The joint member 44 is positioned with the rubber layer 431 facing forward (outside) of the elastic layer 432. Therefore, by positioning the rubber layer 431 on the front side, which is more exposed to sunlight, deterioration of the exterior packing 43 due to ultraviolet rays is less likely to occur.

[0032] Figure 3 shows the wall structure 1 with the joint member 44 installed. The wall material 2 is an exterior wall material (exterior material) that constitutes the exterior wall of the house, and multiple wall materials are provided on the front side (outdoor side) of the wall base 12. The multiple wall materials 2 are arranged, for example, in a staggered pattern. For the wall material 2, for example, ceramic siding material can be used.

[0033] The wall substrate 12 has a substantially flat front surface (outdoor side) and comprises multiple support panels 120 and a breathable waterproof sheet material 122. The support panels 120 are formed in the shape of rectangular plates. The support panels 120 are made of, for example, plywood, medium-density fiberboard (MDF), and gypsum board. The support panels 120 are positioned on the front side (outdoor side) of the columns 11 and are stretched across multiple columns 11 and fixed with fasteners such as nails.

[0034] The wall material 2 is fixed to the wall substrate 12 by wall material fasteners 13. The wall material fasteners 13 are positioned on the front side of the wall substrate 12 by fixing the fixing part 130 to the wall substrate 12 of the support surface material 120 or column 11 with fasteners 133 such as screws or nails. The wall material 2 is fixed to the front side (outdoor side) of the wall substrate 12 by hooking the lower locking pieces 131 and 132 of the wall material fasteners 13 onto the solid part of the upper end of the wall material 2. One of the insertion parts 42 of the joint member 4 is fixed to the wall substrate 12 with fasteners 45 such as screws. The joint member 44 is provided at the connection point of adjacent wall materials 2b and 2c in the left-right direction.

[0035] In wall structure 1, wall material 2b and wall material 2c are arranged side by side in the left-right direction. The end faces of the side end 25 of wall material 2b and the side end 26 of wall material 2c are formed flat. The end face of the right side end 25 of wall material 2b and the end face of the left side end 26 of wall material 2c are in contact with or close to the left and right sides of the insertion portion 403 of the joint member 44, respectively, and a gap equal to the thickness of the insertion portion 403 (dimension in the left-right direction) is formed as the upper and lower joint portion 31.

[0036] Furthermore, the rear surface (back) of the right side end 26 of the left wall material 2b contacts the front surface of the exterior material packing 43 located to the left of the insertion part 403, and the rear surface (back) of the left side end 26 of the right wall material 2c contacts the front surface of the exterior material packing 43 located to the right of the insertion part 403. As a result, the wall structure 1 can prevent water from penetrating to the back surfaces of the wall materials 2b and 2c by the exterior material packing 43, thereby improving its waterproofness. Here, since the exterior material packing 43 has a rubber layer 431 on its front side, it is the front surface of the rubber layer 431 that contacts the rear surfaces of the wall material 2b and the rear surfaces of the wall material 2c.

[0037] Furthermore, the wall base 12 and the multiple wall materials 2 are positioned apart in the front-to-back direction by wall material fasteners 13 and joint members 44. A space is provided between the front surface of the wall base 12 and the rear surface of the multiple wall materials 2, and this space is formed as a ventilation layer 125.

[0038] (modified version) In the above embodiment, a structure was described in which a rubber layer 431 is laminated on one surface of the elastic layer 432. However, the structure is not limited to this, and the entire outer surface of the elastic layer 432 may be covered with the rubber layer 431. This reduces the exposure of the elastic layer 432 to ultraviolet rays, making degradation due to ultraviolet rays less likely.

[0039] In the above embodiment, the case where the thickness of the rubber layer 431 and the thickness of the elastic layer 432 are the same (1:1) was described, but it is not limited to this. For example, the thickness of the elastic layer 432 may be about 2 to 10 times that of the rubber layer 431.

[0040] (summary) As described above, the first embodiment is a packing 43 for exterior materials comprising a rubber layer 431 and an elastic layer 432. The rubber layer 431 comprises at least one rubber material selected from the group consisting of ethylene propylene rubber, silicone rubber, fluororubber, and butyl rubber. The elastic layer 432 comprises an elastic body of a foamed material.

[0041] According to this embodiment, the gasket 43 for exterior materials has a multilayer structure consisting of a UV-resistant rubber layer 431 such as EPDM and a heat-resistant elastic layer 432 such as polyurethane. As a result, it is less susceptible to degradation from ultraviolet rays and less prone to loss of elasticity at high temperatures. Therefore, the gasket 43 for exterior materials has the advantage of being waterproof, UV-resistant, heat-resistant, and elastic.

[0042] The second embodiment is a packing 43 for exterior materials according to the first embodiment, wherein the elastic body of the foam material is polyurethane.

[0043] According to this embodiment, the heat resistance of the elastic layer 432 can be improved, and there is an advantage that the elasticity does not decrease easily at high temperatures.

[0044] The third embodiment is an exterior material packing 43 according to the first or second embodiment, which is used in a joint member 44 that is arranged at the connection portion of the exterior material.

[0045] This embodiment offers the advantage of providing a joint member 44 that is excellent in waterproofness, UV resistance, heat resistance, and elasticity. [Explanation of Symbols]

[0046] 43. Packing for exterior materials 431 Rubber layer 432 Elastic layer 44 Joint Members

Claims

1. A rubber layer comprising at least one rubber material selected from the group consisting of ethylene propylene rubber, silicone rubber, fluororubber, and butyl rubber, An elastic layer containing an elastic body of foam material, A gasket for exterior materials that has the following features.

2. The elastic material of the aforementioned foam is polyurethane. The packing for exterior materials according to claim 1.

3. Used in joint members placed at the connection points of exterior materials, A packing for exterior materials according to claim 1 or 2.

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