JP6433743B2 - Hot melt material for joint treatment and joint treatment method - Google Patents

Description

  The present invention relates to a hot melt material for joint treatment that can be applied in a short time without requiring skill in the concave portion of the joint between adjacent gypsum boards, and further, this hot melt material for joint treatment is used. This relates to the joint processing method.

  Generally, the wall used for the interior of a building is manufactured by joining a plurality of plate-like materials such as gypsum board. Filled with a putty agent in the recesses such as joints or chipped parts of the plate material and smoothed it, and painted the surface of the plate material with the smoothed plate material of your choice or wall of your choice The interior construction is performed by attaching the covering material, and the attachment of the wall covering is the mainstream because of the ease of construction. When attaching the wall covering material, the base must be smoothed so that the wall covering material does not float or peel off.

  In the past, joint treatment of an interior base of a gypsum board has been performed by kneading mainly a gypsum-based putty agent with water to form a paste, and then spreading and applying the paste to a joint part. After spread application of the putty agent, moisture contained in the putty agent is sucked into the base and so-called “yase” is generated. Therefore, it has been necessary to apply the putty agent several times for smoothing.

  Since the putty agent takes several tens of minutes to several hours to cure, a waiting time until the next overcoating operation is required, and the construction takes time. In addition, since the putty layer made of putty agent is hard, it cannot follow the movement of the material, and it has become a factor that cracks occur in the joint part such as gypsum board after aging.

  To solve these problems, a solid repair material mainly composed of a thermoplastic resin is melted with a heating element, and this is pressed and filled in a seam recess of an adjacent plate material, and a repair material layer is formed in the seam recess. And a step (2) of applying a putty to the surface of the repair material layer and the surface of the plate-like material around the seam, drying the putty layer, and then polishing the putty layer surface. The layer consists of an intermediate coat putty layer and a top coat putty layer, and in step (2), the bisector of the repair material layer width is exposed on the repair material layer surface and the plate-like material surface around the joint. After applying and drying the intermediate coat putty so as to cover the boundary line portion between the repair material layer surface and the plate-like material surface, the composite treatment layer surface formed by the repair material layer and the intermediate coat putty layer is formed. Apply the top coat putty to cover all and dry, then polish the surface of the top coat putty layer A degree joint portion processing method has been proposed (see Patent Document 1).

Japanese Patent No. 5198843

  In the proposal to heat-melt the solid repair material mainly composed of this thermoplastic resin, it is an effective joint treatment method because no fraying occurs after drying and skill is not required. Since it is essential to apply two layers with the top coat putty layer, there is a demerit that requires a drying time until at least each of the two putty layers is dried.

  In addition, the hot-melt adhesive as a solid repair material mainly composed of thermoplastic resin has an affinity with the putty agent that smooths the seam recesses and the starch paste that adheres the wall covering, except for the joints. The problem was weaker than the gypsum board surface. For this reason, in order to prevent the wall covering from being lifted or peeled off, when the seam of the plasterboard is attached to the wall covering, the hot melt adhesive filled in the concave portion of the seam is applied to the adhesive surface. There is a problem that the putty layer needs to be firmly covered so as not to be exposed, and the dried putty layer is easily peeled off from the hot melt adhesive.

  An object of the present invention is to obtain a hot-melt material for joint treatment that is free from generation of dust after drying and can be easily prepared. Another object is to obtain a hot-melt material for joint treatment that has a high affinity with the putty agent and starch paste for bonding wall coverings. In addition, no drying occurs after drying, skill is not required, as well as a base preparation process with a putty agent is easy, and it is possible to obtain a joint processing method with less failure in attaching wall coverings. Another purpose.

The hot-melt material for joint treatment according to the invention described in claim 1 is a hot-melt material filled by heating and softening in a concave portion of a seam between adjacent gypsum boards, and surrounds the core material and the periphery of the core material. And the outer layer material that is exposed when the concave portion of the seam is filled and smoothed, and the softening temperature of the core material is higher than the softening temperature of the outer layer material. .

  The hot-melt material for joint treatment according to the invention described in claim 2 is flexible so that the core material having a high softening temperature according to claim 1 follows the recess when the outer layer material is softened. It is a feature.

  The hot-melt material for joint treatment according to the invention described in claim 3 is characterized in that the outer layer material according to claim 1 or 2 has an affinity for the concave portion of the gypsum board seam and is spread on the upper surface of the gypsum board. It is characterized in that one or more additives that increase the affinity are blended in the affinity to the putty agent to be applied and the affinity to the starch paste-like adhesive for adhering the wall covering material. .

The joint treatment method using the joint melt hot melt material according to the invention described in claim 4 is the joint treatment method using the joint melt hot melt material according to any one of claims 1 to 3. There,
A heating step of heating the hot melt material with a heating means;
An embedding step of filling a concave portion of a seam between adjacent gypsum boards with a hot-melt material softened by heating in the heating step;
A height adjustment step of aligning the embedded hot melt material with the height position of the peripheral edge of the seam ;
A putty coating step of spreading and applying a putty agent to the concave portion and the peripheral portion thereof to obtain a smooth surface;
It is characterized by comprising a gluing process for gluing wall coverings on the ground surface including the joints between the gypsum boards

  The joint processing method using the hot-melt material for joint processing according to the invention described in claim 5 is such that the heating step according to claim 4 heats and softens the hot-melt material by hot air from a hot air gun. It is characterized by this.

  INDUSTRIAL APPLICABILITY The present invention has an effect that a hot-melt material for joint treatment can be obtained which does not generate fraying after drying and can be easily prepared. Moreover, there exists an effect that the hot-melt material for joint treatment with high affinity with the putty agent and the starch paste for adhesion | attachment of wall covering material, etc. can be obtained. In addition, no drying occurs after drying, skill is not required, as well as a base preparation process with a putty agent is easy, and it is possible to obtain a joint treatment method with less failure in sticking wall coverings. There is an effect that can be done.

It is explanatory drawing which shows the structure of one Example of the hot-melt material for joint processing of this invention. It is explanatory drawing which shows the structure of another Example of the hot-melt material for joint processing of this invention. It is explanatory drawing which shows the structure of another Example of the hot-melt material for joint processing of this invention. It is explanatory drawing which shows the process of the joint processing method using the hot-melt material for joint processing of FIG. 1, a figure is a process before filling the recessed part of a seam, b figure is an embedding process which fills the recessed part of a seam, c figure is It is a height adjustment process. It is explanatory drawing which shows the process of the joint treatment method following FIG. 4, d figure is a putty coating process and e figure is a wall covering material sticking process.

  In the present invention, the hot melt material that is heated and softened and filled in the concave portion of the seam between adjacent gypsum boards is composed of the core material and the outer layer material around the core material, and the softening temperature of the core material is the outer layer material. It is higher than the softening temperature. As a result, there is no generation of dust after drying, and the base can be easily adjusted.

  In other words, hot melt adhesives have very little shrinkage compared to putty, so there is no need for overcoating to stop fraying, and curing and practical strength can be achieved simply by lowering the temperature. Needless to say, the waiting time can be greatly reduced. In addition, since the hot-melt material for joint treatment according to the present invention is composed of a core material having a high softening temperature and an outer layer material having a low softening temperature, when filling the concave portions of the seams between adjacent gypsum boards, heating means Since the outer layer material softens first when heated at, the hot melt material does not melt and tear during filling, and the filling operation can be performed easily.

  As a preferred embodiment of the hot melt material of the present invention, a core material having a relatively high softening temperature is selected so as to be flexible enough to follow the recess when the outer layer material having a relatively low softening temperature is softened. To do. Thereby, when heating to the temperature which softens an outer layer material and filling the recessed part of the seam of gypsum boards, handling becomes favorable and a filling operation | work can be performed still more easily.

  As the hot melt resin of the outer layer material of the present invention, a resin having a softening point of 50 to 130 ° C. is desirable. As such a hot melt resin, a resin having affinity with putty agents such as ethylene-vinyl acetate copolymer (EVA), polyethylene, polypropylene, polyester, polyamide, thermoplastic elastomer, and starch paste-like adhesive is suitable. It is.

  Further, as the core material of the present invention, polyvinyl chloride (PVC), polyethylene terephthalate (PET), acrylic resin, urethane resin, thermosetting elastomer, rubber, ethylene-vinyl acetate copolymer (EVA), polyethylene, polypropylene Resins such as polyester, polyamide, and thermoplastic elastomer are suitable, and resins having a softening point of 100 to 250 ° C are desirable. Moreover, there is no problem even if a small amount of another resin such as polyurethane resin or acrylic resin is added to these resins to modify their physical properties.

  As a further preferred embodiment of the hot melt material of the present invention, the outer layer material has an affinity for the concave portion of the gypsum board joint, an affinity for the putty agent spread-applied on the upper surface of the gypsum board, and a wall covering material. Additives that increase the affinity of any one or more of the affinity for the starch paste-like adhesive to be adhered are blended. That is, as an additive to the outer layer material, gypsum, calcium carbonate, cellulose, starch, sand, glass powder, powder emulsion, talc, titanium oxide, wood powder, clay (clay), silica, PVA, mica (mica), etc. By blending, since the affinity to the concave surface of the gypsum board seam, putty agent and starch paste-like adhesive is increased, it is easy to adjust the base and prevent the wall covering from being lifted or peeled off it can.

  As an additive to be blended in the outer layer material of the present invention, for example, a lime component is used to improve the affinity to the concave surface of the gypsum board joint, the affinity to the putty agent, and the affinity to the starch paste-like adhesive. It is preferable that an inorganic filler such as gypsum, calcium carbonate, talc, titanium oxide, clay (clay), silica, mica (mica) or the like is blended in an amount of 20% by weight or less.

The joint treatment method of the present invention is a joint treatment method using the above-mentioned hot-melt material for joint treatment, a heating step of heating the hot melt material with a heating means, and a hot melt material softened by heating in the heating step. The embedding process for filling the recessed part of the seam between adjacent gypsum boards, the height adjusting process for aligning the embedded hot melt material with the height of the peripheral part of the seam, and the putty agent being spread on the recessed part and its peripheral part It is provided with a putty coating process for applying and obtaining a smooth surface, and a pasting process for pasting the wall covering material on the ground surface including the gypsum boards and their joints. As a result, there will be no splinter after drying, no need for skill, of course, a ground preparation process with a putty agent is easy, and a joint treatment method with less failure to stick wall coverings is obtained. Can do.

  The preferred heating process and embedding process of the hot melt material of the present invention is a hot melt material composed of a core material having a high softening temperature and an outer layer material having a low softening temperature. Instead, the outer layer material may be heated and softened with hot air such as a hot air gun to fill the recesses of the seams between adjacent gypsum boards and fill the recesses.

  Furthermore, the heating means may be any means that softens the outer layer material of the hot melt material by heating, not only hot air such as the hot air gun described above, but also due to contact with a heating element such as an iron or a heat iron, heating atmosphere It is possible to use heat conduction that is held until it softens inside, radiation by infrared rays or far infrared rays, and heating by electromagnetic wave heating such as induction heating or dielectric heating. In the case of heating by this electromagnetic wave heating, the frequency for heating the material specific to the component contained in the outer layer material is selected, or the specific substance (aluminum, copper, iron metal powder that is induction-heated by the outer layer material component) Etc.) as one of the constituents.

  The subsequent height adjustment step may be performed by smoothing the outer layer material exposed to the recess with a warm spatula, and these heating step, embedding step and height adjustment step are performed after placing the hot melt material not heated in the recess, You may make it heat-soften in a recessed part with heating apparatuses, such as an iron and a heat iron, and fill up the recessed part of a seam, and you may make it adjust height simultaneously.

  As the putty coating step and the wall covering material sticking step in the present invention, as long as the joint recesses of the gypsum boards are filled and smoothed by the joint processing hot melt material, the normal putty coating step and the wall covering material are performed. The sticking process can be performed. That is, it is only necessary that the putty agent is spread and applied across the recesses and smoothed with a putty vera.

  At this time, in the case where an additive is added to the outer layer material that appears in the concave portion of the joint melt hot melt material, since the affinity with the putty agent is improved, the spread application of the putty agent becomes good. Also, the smoothed surface is maintained well. Furthermore, even if there is a part where the outer layer material to which the putty agent is not spread and applied is exposed, the affinity between the outer layer material and the starch paste-like adhesive is improved. The floating and peeling of the material is prevented.

  Another hot-melt material for joint treatment according to the present invention is obtained by kneading an additive made of a heating element powder that generates heat by electromagnetic induction heating means in a hot-melt base material. As a result, it is possible to obtain a joint melt hot-melt material that does not generate a fray after drying and is easy to adjust the base.

  That is, the joint melt hot-melt material utilizes heating by electromagnetic heating such as induction heating or dielectric heating. This hot melt material is obtained by adding a heating element powder induction-heated to a constituent material of the hot melt material as a constituent component to the hot melt base material and uniformly kneading. During heating, the hot melt material is exposed to an electromagnetic wave having a specific frequency, and the kneaded heating element powder is heated and used.

  Examples of the heat generating powder to be kneaded include aluminum, copper, and iron metal powders. As the heating, it is only necessary to provide the device with a transmitting means for transmitting an electromagnetic wave having a specific frequency, and it has an advantage that it can be heated with a small amount of power.

  FIG. 1 is an explanatory view showing the configuration of an embodiment of a hot-melt material for joint treatment according to the present invention. As shown in FIG. 1, the joint processing hot melt material 10 of this embodiment has a cylindrical outer shape, and is arranged so as to surround the cylindrical core material 11 along the longitudinal axis and the periphery of the core material 11. The outer layer material 12 is made. The core material 11 is made of a hot melt resin having a high softening temperature and the outer layer material 12 having a low softening point.

  Specifically, the core material 11 is made of a hot-melt resin made of an ethylene-vinyl acetate copolymer (EVA) having a softening point of 100 ° C., and the outer layer material 12 is an ethylene-vinyl acetate copolymer having a softening point of 80 ° C. (EVA) hot melt resin. In addition, the outer layer material 12 is kneaded with an inorganic filler of calcium carbonate.

  The hot melt material 10 of the present embodiment is provided with a cylindrical outer shape and a cylindrical core material 11, but these shapes can be used as long as they are filled and buried in the concave portion of the seam between the gypsum boards. It is not limited. For example, you may provide the external shape along the cross-sectional shape of the recessed part of a seam. For example, the outer shape may be triangular instead of circular so as to follow the recess, and the core may be triangular instead of circular.

  FIG. 2 is an explanatory view showing a configuration of another embodiment of the joint processing hot melt material of the present invention. As shown in FIG. 2, the joint processing hot melt material 20 of the embodiment different from FIG. 1 has a cylindrical outer shape as in FIG. 1, and unlike FIG. 1, it has a triangular prism shape along the longitudinal axis. It consists of a core material 21 and an outer layer material 22 arranged to surround the core material 21. The core material 21 is made of a hot melt resin having a high softening temperature and the outer layer material 22 has a low softening point.

  Specifically, the core material 21 is made of a hot-melt resin made of an ethylene-vinyl acetate copolymer (EVA) having a softening point of 100 ° C., and the outer layer material 22 is an ethylene-vinyl acetate copolymer having a softening point of 80 ° C. (EVA) hot melt resin. The outer layer material 22 is mixed with an inorganic filler of calcium carbonate.

  FIG. 3 is an explanatory view showing the configuration of still another embodiment of the hot-melt material for joint treatment of the present invention. As shown in FIG. 3, the joint processing hot melt material 30 of the embodiment different from those in FIGS. 1 and 2 has a cylindrical outer shape as in FIGS. 1 and 2. Unlike FIG.1 and FIG.2, there is no core material along a longitudinal axis, and the heat generating powder 32 which heat | fever-generates with the electromagnetic induction heating means is kneaded with the hot-melt base material 31 which consists of hot-melt resin.

  That is, the joint processing hot melt material 30 of the present embodiment utilizes heating by electromagnetic heating such as induction heating or dielectric heating. This hot melt material 30 is obtained by adding a heating element powder 32 as a constituent component to a hot melt base material 31 and kneading it uniformly. In heating, the hot melt material 30 is exposed to electromagnetic waves of a specific frequency, and the kneaded heating element powder 32 is heated and used. Specifically, the hot melt base material 31 is made of a hot melt resin made of ethylene-vinyl acetate copolymer (EVA) having a softening point of 80 ° C., and 0.5 mm diameter aluminum powder is uniform as the heating element powder 32. Kneaded and blended.

  FIG. 4 is an explanatory view showing the process of the joint treatment method using the hot-melt material for joint treatment of FIG. 1, a figure is a process before filling the concave part of the seam, b figure is a burying process of filling the concave part of the seam, FIG. c shows the height adjustment process. FIG. 5 is an explanatory view showing steps of the joint treatment method subsequent to FIG. 4, wherein FIG. 5d is a putty coating process, and FIG. 5e is a wall covering material sticking process.

  As shown in FIG. 4 a, the joint processing hot melt material 10 shown in FIG. 1 is filled in the concave portion 42 of the joint between the adjacent gypsum boards 41. While heating the hot melt material 10 with a hot air gun (not shown), the outer layer material 12 is softened. As shown in FIG. b, the hot melt material 10 softened by heating is filled in the concave portion 42 while filling the concave portion 42 of the seam.

  As shown in FIG. c, the height of the hot melt material 10 embedded in the recess 42 is adjusted. That is, the hot melt material 10 higher than the peripheral edge of the concave portion is pressed and smoothed by the heated spatula 43. When pressing with a spatula, the height can be easily adjusted by pressing with a spatula 43 while heating with hot air from a hot air gun. As the heating means, an electromagnetic wave heating means can be used in the hot melt material shown in FIG.

  As shown in FIG. 5d, the hot melt material 10 is stepped by spreading and applying a putty agent 44 on the concave portion 42 of the seam between the gypsum boards 41 whose heights are adjusted and on the surface of the gypsum board 42 at the periphery thereof. Smooth without any problem. In the case where an additive is added to the outer layer material 12 exposed in the concave portion 42 of the joint processing hot melt material 10, since the affinity with the putty agent 44 is improved, the spread application of the putty agent 44 can be performed. It becomes good and the smoothed surface is also kept good.

  Finally, as shown in FIG. 5e, the entire gypsum board 41 is pasted with starch paste with the wall covering 45 including the base smoothed with the putty agent 44. In this case, even if the putty agent 44 is not applied to the outer layer material 12 exposed in all the recesses, the affinity with the starch paste is improved, so that the wall covering 45 after sticking is lifted. And peeling is prevented.

10 ... Hot melt material for joint treatment,
11 ... Core material,
12 ... Outer layer material,
20 ... Hot melt material for joint treatment,
21 ... Core material,
22 ... Outer layer material,
30 ... Hot melt material for joint treatment,
31 ... Hot melt substrate,
32 ... heating element powder,
41 ... gypsum board,
42 ... concave,
43 ... Spatula,
44 ... Putty agent,
45 ... wall covering,

Claims (5)

When the hot melt material that is heated and softened in the recesses of the seams between adjacent gypsum boards is filled with the core material and surrounding the periphery of the core material , the recesses of the seam are filled and smoothed. A hot melt material for joint treatment, characterized in that the core layer has a softening temperature higher than that of the outer layer material.   The hot melt material for joint treatment according to claim 1, wherein the core material having a high softening temperature has flexibility to follow the recess when the outer layer material is softened.   The outer layer material has an affinity for the concave portion of the gypsum board seam, an affinity for a putty agent spread-applied on the upper surface of the gypsum board, and an affinity for a starch paste-like adhesive for adhering a wall covering. The additive for increasing the affinity for any one or more of the properties is blended, The hot-melt material for joint treatment according to claim 1 or 2. A joint treatment method using the hot-melt material for joint treatment according to any one of claims 1 to 3,
A heating step of heating the hot melt material with a heating means;
An embedding step of filling a concave portion of a seam between adjacent gypsum boards with a hot-melt material softened by heating in the heating step;
A height adjustment step of aligning the embedded hot melt material with the height position of the peripheral edge of the seam ;
A putty coating step of spreading and applying a putty agent to the concave portion and the peripheral portion thereof to obtain a smooth surface;
A joint treatment method using a hot melt material for joint treatment, comprising a gluing board and a sticking step of sticking a wall covering material on a ground surface including a joint between them.   5. The joint treatment method using a hot melt material for joint treatment according to claim 4, wherein the heating step heats and softens the hot melt material with hot air from a hot air gun.

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