JPH0412249Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Field of Application> This invention relates to a bonding structure between a facing material and a base material, which are bonded and cured by pressure, with a moisture-curable elastic adhesive interposed between the adherends.

<Prior Art> One of the adhesives currently used is a moisture-curing elastic adhesive, which is divided into one-component moisture-curing type and two-component moisture-curing type. The former has a primer treatment applied to the adhesive layer, while the latter does not, and since the former is a one-component type, it can be stored in either a cartridge container or a can, but the latter is a two-component type and can only be stored in a can. It will be done. Therefore, for example, Cemedine PM-100 manufactured by the applicant company is used as a one-component moisture curing type product, and this is stored in a cartridge or a can container. The primer layer 11 is extruded and applied, and this is sharpened into a number of parallel thick uneven lines using a metal comb 13 or the like, and the adherend 10 on which the other primer treatment layer 11 has been applied is pressed.
By reaction-curing the adhesive with a small amount of moisture in the air, the adherends 10 and 10' are bonded in an elastic state (Fig. 4 A and B, Fig. 5). ). Apart from this, examples of two-component moisture curing types include Cemedine PM-200 and PM-
210 is applied from a can container to an adherend material that has not been subjected to a primer treatment layer, it is sharpened into uneven lines, the adherend material is directly extruded, and the adhesive is cured by reaction. Therefore, the dressing treatment is necessary to speed up the work period by allowing moisture-containing air to enter between the irregularities, and to join the adherends without causing distortion of the adherends. However, if the width between adjacent adhesives is made too wide with only the sole purpose of reliably joining the adherend materials, this may lead to defects such as a decrease in adhesive strength or peeling phenomenon after installation. It turns out. Note that the elasticity of moisture-curing elastic adhesives after reaction curing is
After curing, it can be used to absorb earthquakes and other vibrations, to relieve the stress and strain caused by expansion and contraction of parts due to heat and dryness, and to disperse and alleviate the curing strain of adherends, as well as to flatten uneven base materials and surface materials. Enables filling joints.

<Problems to be solved by the invention> This invention solves the above-mentioned drawbacks of the conventional technology, that is, uses a sufficient amount of adhesive with stronger adhesive strength to maintain adhesive strength and The purpose is to provide sufficient space width between the moisture-curing elastic adhesives to shorten the construction period and increase efficiency in the amount of adhesive used.

<Means for solving the problem> This invention has achieved the above-mentioned purpose, and its gist is to apply moisture-curing elastic adhesives that are arranged in parallel in a longitudinal cross-sectional uneven shape to a base material made of non-porous material. a first bonding structure in which a non-porous surface material is pressed onto the adhesive to allow air to enter between the irregularities to bond and cure; and the parallel moisture-curing elastic adhesive. A second bonding structure is formed for each block of adhesive to bond and cure by forming a space with a width that allows external air to enter between adjacent blocks of adhesive even when the adhesive is pressed by the facing material. It has a two-step bonding structure between the facing material and the base material. The term "moisture-curing elastic adhesive" here includes two-component curing adhesives in addition to one-component curing adhesives including modified silicone adhesives, silicone-based adhesives, or urethane adhesives. be.

<Function> This device with the above configuration performs surface treatment on the adherends to be joined on top and bottom, if necessary.This surface treatment requires thorough drying and cleaning of the construction surface and removal of oil, dirt, etc. Depending on the condition of the adherend, apply a primer. First, a moisture-curing elastic adhesive is applied to one side of the adherend using a cartridge nozzle, or applied to the entire surface to a certain thickness.
Next, comb the adhesive-applied surface and apply the first
A second bond is formed between the plurality of parallel moisture-curing elastic adhesive groups and another parallel adhesive group. The pressure of the facing material against the base material, which is the structure, also forms an air gap between adjacent adhesives that can maintain the intrusion of external air. In this way, even if the first bonding structure, the moisture-curing elastic adhesive concave part of the parallel unevenness in the first group collapses and there is no space, the second bonding structure
Since there is a space for air to enter between the adhesive between the first group and the other group in the bonding structure, the bonding force between the adherends in each group is sufficient and the space between the groups is removed. The inside of the group is rapidly cured by the air, that is, the moisture in the air.

<Example> A preferred example of this invention will be described with reference to FIGS. 1, 2, and 3.

Figure 1 is a perspective view showing the bonding structure between the facing material and the base material, which is the main part of this invention, and Figure 2 shows the parallel state of the moisture-curing elastic adhesive before pressing the facing material onto the base material. FIG. 3 is a sectional view taken along line AA in FIG. 1, and FIG. 3 is a sectional view taken along line BB in FIG.

Apply a one-component moisture-curing elastic adhesive to the entire surface of the base material 1 of a building or other structure, and use a metal comb spatula to sharpen it into three rows with a thickness of 1 m/m and an adjacent width of 3 m/m. Vertical section unevenness parallel to 2
A first group of parallel coating layers 3 of a moisture-curable elastic adhesive having a width of 40 m/m is formed to form a first bonding structure. If the combed thickness of the moisture-curing elastic adhesive is less than 1 m/m for a one-component moisture-curing elastic adhesive and less than 0.4 m/m for a two-component adhesive, the bonding of the above-mentioned adhesive is not possible.・Absorbing earthquakes and other vibrations after curing, alleviating stress distortion due to expansion and contraction of parts due to heat and dryness, dispersing and alleviating curing distortion of adherend materials, and use for uneven base materials and surface coatings. cannot allow a flat fill bond to the material. Also, the pitch width of the pair of unevenness is
If it exceeds 2 m/m, a large amount of bonding agent will be required and the moisture will not be sufficiently distributed, and if it is less than 4 m/m, it cannot be said that it is sufficient to absorb the vibrations of the earthquake.
Further, 3 layers are provided adjacent to the coating layer 3 of the first group.
A second group of coating layers 3' is formed which is the same as the first group parallel to the rows, but between the first group and the second group, the moisture curing layer 3' is formed so as to maintain the intrusion of air from the outside between them. 10m/m~ to form a strip-shaped space 4 parallel to the mold elastic adhesive.
A second joint structure is created by providing a gap width of 150 m/m (Figure 2). If the width is less than 10 m/m, there will be no adjacent gaps when the facing material is pressed, preventing air from entering, and if the width of the space is 150 m/m or more, it will not be possible to obtain the same adhesive strength as full-surface adhesion.
The thickness of the moisture-curing elastic adhesive for the gap is 1 m/m to 5 m/m for the one-component moisture-curing type, and the thickness of the moisture-curing elastic adhesive for the two-component moisture-curing type.
A width of 0.4m/m to 5m/m is suitable;
Below 0.4m/m, space 4 disappears and
If it exceeds 50m/m, the adhesive strength will be weak.

The facing material 5 is bonded and cured by pressing onto the many parallel strips of moisture-curable elastic adhesive formed on the base material 1 in this way. In this case, some or all of the uneven parts in each group are brought into contact and integrated, and air containing moisture does not enter from the outside at this integrated part, but air containing moisture enters from the space 4 between each group and reacts. It hardens (Figures 1 and 3). Note that the mounting plate 5 in FIG. 1 is drawn as a transparent plate seen through to make it clear that the concavo-convex shapes are in contact with each other and are integrated.

Note that if either the facing material 5 or the base material 1 is porous, the two-step joining structure as in this invention is not necessary, and for this invention to work, the facing material 5 and the base material 1 must be It is essential that both be made of non-porous material to which air cannot enter. Further, the moisture-curable elastic adhesive in the present invention includes a sealing material for adhesive use in a broad sense.

<Effects of the invention> This invention forms a first bonding structure by forming a large number of moisture-curing elastic adhesives in parallel.
Air can easily enter between the parallel adhesives to promote reaction curing, but even if the adhesives are crushed by the pressure of the facing material and the first bonding structure no longer functions, the adhesive Since the second joint structure is formed by providing a space with a larger width between each row of the agent, the second bonding structure is formed by providing a space with a larger width for each row of the agent, so that the second bonding structure is formed so that external air can enter there and promote reaction curing. It has a staged joint structure. In addition, the gaps created by the unevenness of each adhesive not only promote reaction curing, but also maintain the surface flat even if the back side of the base material or facing material is uneven, and provide elasticity between the facing material and the base material. It becomes possible to sufficiently join even in the state of

[Brief explanation of drawings]

Fig. 1 is a partially cutaway perspective view showing an embodiment of this invention, Fig. 2 is a cross-sectional view taken along line A-A in Fig. 1, Fig. 3 is a cross-sectional view taken along line B-B in Fig. 1, and Fig. 4 is a conventional Fig. 5 is a cross-sectional view of adherends before they are bonded, Fig. 5 is a cross-sectional view of the adherend materials after they are bonded, and Fig. 5 is a cross-sectional view of the adherend materials after they have been treated with primer. FIG. 3 is an explanatory diagram of forming a moisture-curable elastic adhesive having a plurality of parallel uneven longitudinal sections. 1... Base material, 2... Parallel unevenness of moisture-curing elastic adhesive, 3, 3', 3'', 3... Each group of parallel unevenness of moisture-curing elastic adhesive, 4...
...Space, 5... Surface material.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A moisture-curing elastic adhesive is formed in parallel in a longitudinal cross-section in an uneven shape on a base material made of a non-porous material, and a facing material made of a non-porous material is pressed onto the adhesive. Then, air is allowed to enter between the uneven surfaces to bond and bond.
The first bonding structure to be cured and each of the parallel blocks of moisture-curing elastic adhesive have a width that can maintain the intrusion of external air between adjacent blocks of adhesive even when pressed by the facing material. A two-stage bonding structure consisting of a second bonding structure that forms a space to bond and harden, and a facing material and a base material. 2 The pitch width between the unevenness of the moisture-curing elastic adhesive arranged in parallel as the first bonding structure is 2 to 4 m/m, the thickness of the adhesive is 0.4 m/m to 5 m/m, and the second A two-step bonding structure between a facing material and a base material according to claim 1, in which the width of the space between each block of a plurality of adhesives is 10 m/m to 150 m/m. .