JPS6333548B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to building finishing corner coating materials.

Finishing methods such as cloth pasting, paint finishing, and plastering are used to finish the walls and ceilings of buildings, but in all methods, the inside and outside corners of the finishing material are not made correctly. The original appearance will appear on the finished surface, creating curves and unevenness that not only look unsightly, but also pose a risk of damage.

For this reason, conventionally, a board was placed on one side of the corner to bring out the center of the outgoing or incoming corner, and after applying paint or plastering material to the other side, the backing board was removed and the area where the board had been placed Corners were finished by applying paint or plastering material, but this method was time-consuming and the plate could only be used once, leading to increased costs.

Therefore, a molded body made of vinyl chloride resin with an L-shaped cross section has been proposed, but when this is applied to a corner, direct contact between the base material at the corner and the finishing material is blocked, and the base material at that part is It is easy to cause peeling between the finish material and the finish material, and it is also expensive and thick.
There is a drawback in that it is necessary to finish the molded body by applying joint tape to the end of the molded body in order to eliminate the difference in level between the part to which the molded body is applied and other parts. In addition, two thin metal plates are attached at a predetermined distance to the center of a tape made of a coarsely woven fabric like cheesecloth, and the corners are fixed with putty on both sides of the tape during use. Tape has also been proposed, but it is not easy to use, and because cheesecloth and other materials expand and contract greatly when moisture dries and wets, the finishing material may peel off from the base material over time, and thin metal plates may Because there is a large difference in the absorbency of the finishing material between the material and the base material, the finish material after drying has a difference in luster and color tone, and since the finishing material does not penetrate into the thin metal sheet, it is difficult to bond the thin metal sheet and the finishing material. Since the force is weak and the difference in expansion/contraction rate between the thin metal sheet and the finishing material due to changes in temperature is large, there is a problem in that the finishing material peels off from the thin metal sheet over time.

In view of such circumstances, the present invention has been developed by applying a pressure-sensitive adhesive to only the fibers on one or both sides of a split fiber nonwoven fabric of polyolefin film to form a base fabric, and applying two specific tapes to the base fabric. By pasting in a specific manner, it is easy to paste on-site, and even if the outer and inner corners of the substrate are not made accurately, the center can be easily exposed, and the center of the substrate can be easily exposed. To provide a material for covering the corner of a building's finishing material, which does not peel off from the finishing material and hardly creates a difference in level.

That is, the present invention is a split fiber nonwoven fabric obtained by making split fibers by making small cracks in a polyolefin film, continuously stacking them vertically and horizontally, and heat-sealing the fiber intersection points. A thin hard film-like material consisting of a thin base fabric with a width of 4 to 20 cm coated with pressure-sensitive adhesive, and a laminate of a synthetic resin film or thin metal plate and a thin plate made of wood or paper. The base fabric is cut to a width of ~5 cm, and the short sides of the base fabric are butted at the center with a small gap left, and the length of the base fabric is cut with a margin equivalent to the pasting allowance left at both ends of the base fabric. The present invention relates to a corner coating material for a finished building material consisting of two tapes attached in parallel in the side direction and a release paper overlaid on the pressure-sensitive adhesive coated side of the base fabric.

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a partially cutaway plan view schematically showing an embodiment of the building finishing base corner coating pasting material of the present invention.
FIG. 2 is an enlarged cross-sectional view taken along the line AA in FIG. 1, and FIG. 3 is an explanatory diagram showing a simplified state of use of the building material corner covering material.

In the drawing, 1 is a split fiber nonwoven fabric, and this split fiber nonwoven fabric 1 is made by making small cracks in a polyolefin film such as polyethylene or polypropylene to make split fibers, which are laminated vertically and horizontally, and then heat-sealed at the fiber intersection points. This split fiber nonwoven fabric 1 is porous, that is, it has holes except for the tissue fiber surface, and a pressure sensitive adhesive 2 is applied only to the fiber portion of this split fiber nonwoven fabric 1 to form a base fabric. ing.

3 and 3 are tapes made by cutting a hard film-like material made of the above-mentioned specific laminate into a width of 0.5 to 5 cm, and these two tapes 3 and 3 are coated with the pressure-sensitive adhesive 2 of the above-mentioned base fabric. They are pasted in parallel in the long side direction of the base fabric with their side surfaces butted against each other with a small gap left in the center of the short side of the face side, and with a margin for pasting margin left at both ends of the base fabric.

4 is a release paper, and this release paper 4 is attached to the two tapes 3, 3 attached to the surface of the base fabric coated with the pressure-sensitive adhesive 2.
It is overlapped on the pressure-sensitive adhesive 2 coated side of the base fabric while covering it. Note that 5, 5 is a pressure sensitive adhesive layer applied to the tapes 3, 3.

When using this material for covering corners of building finishing materials, peel off the release paper 4, bend the gap between the tapes 3 and 3 to match the center of the corner of the substrate 6, and fold the gap into the center of the corner of the substrate. The side to which the pressure-sensitive adhesive 2 is applied is attached to the corner of the substrate 6.

When the coating material of the present invention is applied to the corner of the substrate as described above, even if the center of the corner of the substrate is not accurately formed over the entire area and there are curved or uneven parts, The center line of the corner can be easily and accurately drawn by the tapes 3, 3.

After pasting the coating material of the present invention on the corners of the substrate as described above, finishing materials such as paint, plastering material, cloth, etc. are applied and pasted along the center line drawn by the tapes 3, 3. When finished,
Corners such as external and internal corners can be accurately finished.

In the coating material of the present invention, the split fiber nonwoven fabric used as the base material is made by continuously laminating vertically and horizontally a polyolefin film such as polyethylene, polypropylene, etc., which has been made into split fibers by making small cracks, as described above. Since it is a thin film-like non-woven fabric made by heat-sealing the intersection points, it has good adhesion to the substrate and is less likely to cause unevenness on the finished surface. In addition, split fiber nonwoven fabric is made by stacking split fibers vertically and horizontally and heat-sealing the fiber intersection points, so it is porous, meaning it has a large number of pores in a network except for the tissue fiber surface, and can be pressure-sensitive adhesive. Since the agent is applied only to the fibers, when the finishing material is applied, the finishing material directly penetrates into the substrate surface through the pores, making it easier for the nonwoven fabric to adhere to the substrate, and also preventing the finishing material from being applied. There is no difference in gloss or color tone. Furthermore, in split fiber nonwoven fabric, the split fiber pieces themselves are films with a width, so the fibers are joined together by face-to-face bonding, rather than point bonding as in woven fabrics woven with regular rounded yarns. Therefore, it is very strong against forces in the diagonal direction as well as in the orthogonal cross direction, that is, the length direction of the fibers, and is very suitable as a base material for adhesive materials. As the split fiber nonwoven fabric, a high-density polyolefin type fabric is particularly preferable because of its high strength.

Pressure-sensitive adhesives have sufficient wettability to easily adhere to the substrate initially, have sufficient adhesion to prevent peeling during application of the finish, and do not transfer to the substrate. In terms of composition, acrylic materials are preferred. In addition, in the examples, this pressure-sensitive adhesive is applied only to one side of the split fiber nonwoven fabric, but it may be adhered to both sides of the split fiber nonwoven fabric, and in the case of cloth finishing, etc., it is better to apply it to both sides. preferable.

The base fabric is formed by applying a pressure-sensitive adhesive to the above-mentioned split fiber non-woven fabric and has a width of 4 to 20 cm, but cutting to such narrow widths is usually done by applying a pressure-sensitive adhesive to the split-fiber non-woven fabric. The pressure-sensitive adhesive is coated with a release paper on the surface coated with the pressure-sensitive adhesive.

The tape to be attached to the base fabric is a thin hard film made of a synthetic resin film such as polyester or hard vinyl chloride resin, or a laminate of a thin metal plate such as aluminum foil or steel sheet, and a thin sheet made of wood or paper. This tape is cut into pieces of 0.5 to 5 cm, and as mentioned above, the short sides of the base fabric are butted in the center with a small gap left between the sides, and the ends of the base fabric are left with a margin equivalent to the pasting allowance. The tapes are attached in parallel in the long side direction of the base fabric, and the gap between the tapes is preferably about 0.01 to 0.3 cm. Although film-like materials are said to be hard, they only need to be hard enough to allow the adhesive material to be applied straight to the corner of the substrate; strong hardness is required. isn't it. In addition, the thickness is preferably as thin as possible within the range that allows the above-mentioned hardness to be achieved, and is usually about 0.1 to 0.5 mm. In addition, in the present invention, the tape made of a laminate of a synthetic resin film or a thin metal plate and a thin plate made of wood or paper is used as the tape as described above because the finishing material is insufficient if only the synthetic resin film or metal thin plate is used. Because it is not absorbent, when the finish is applied, it
There is a difference in the absorbency of the finishing material between plasterboard, cement board, etc.
As a result, differences in gloss and color tone occur between the tape part and other parts of the finishing material after drying, and since the finishing material has no absorbency, the adhesive strength between the tape and the finishing material is weak, and over time. Since there is a risk that the finishing material may peel off from the tape part, it is recommended to laminate the synthetic resin film or thin metal plate with a thin wooden or paper board that absorbs the finishing material to avoid the above-mentioned problem. This is to make it happen. In addition, there are problems with strength when using only wooden thin boards or paper thin boards, and it may be difficult to stick them straight when pasting them to the corners of the substrate. A laminated film or thin metal plate is used. Therefore, when these tapes are applied to the base fabric, the wood or paper laminate part is placed on the side to which the finishing material is to be applied. Further, in the above embodiments, these tapes were attached to the side of the base fabric to be attached to the corner of the substrate, but they may be attached to the side opposite to the side to be attached to the corner of the substrate. However, as in the example, it is better to attach the tape to the corner of the base fabric on the side where it will be attached to the corner of the base fabric, because the slight difference caused by the tape is covered by the base fabric, making it easier to apply the finishing material. preferable.

The width of the base fabric and the width of the tape are determined based on practical practical ranges, and if the width of the base fabric becomes narrower within the above range, it is preferable to reduce the tape width accordingly. In addition, in FIG. 2, the thicknesses of the split fiber nonwoven fabric 1, the layer of pressure-sensitive adhesive 2, the tape 3, etc. are shown thick to make it easier to understand the adhesive material of the present invention, but in reality, these are thicker. It is very thin. The adhesive material of the present invention is usually made long, that is, has a long length in the long side direction.

The release paper must be able to be easily peeled off without transferring the pressure-sensitive adhesive from the base fabric, and is suitable for use with kraft paper, polyolefin films such as polyethylene film, polypropylene film, etc. Preferably, those coated with silicone oil or paraffin.

Application of the pressure sensitive adhesive to the split fiber nonwoven fabric is carried out, for example, in the following manner. First, a pressure-sensitive adhesive is applied to release paper, a split fiber nonwoven fabric is placed on the pressure-sensitive adhesive layer, and a highly absorbent paper such as kraft paper is layered on top of that and pressure-bonded to remove the tissue fiber surface. Let the paper absorb the pressure-sensitive adhesive in the mesh-like hole part,
By peeling off the paper, the pressure sensitive adhesive layer other than the fiber surface is peeled off from the release paper. By doing so, the pressure sensitive adhesive is selectively applied only to the fiber portions of the split fiber nonwoven fabric. In this case, the split fiber nonwoven fabric must be thin, the fiber intersection points are heat fused, so there is little difference in thickness between the fiber intersection point and other parts, and the split fiber piece itself Together with the fact that the film has a width, it is possible to apply the pressure sensitive adhesive selectively only to the fiber portions. In addition, in normal woven fabrics, the intersection points of the woven yarns are thicker than other parts, and the woven yarns themselves are rounded. The adhesive cannot be applied, resulting in weak adhesion to the substrate.

To make the adhesive material shown in the examples, the base fabric formed by applying a pressure-sensitive adhesive to the split fiber nonwoven fabric as described above is once peeled off from the release paper, and the pressure-sensitive adhesive of the base fabric is removed. Two pieces of tape are applied to the coated surface in a specific manner as described above. At that time, you don't have to apply pressure-sensitive adhesive to the tape because pressure-sensitive adhesive is applied to the base fabric side, but if possible, it is better to apply pressure-sensitive adhesive to both sides of the tape. preferable. After the tape has been applied to the base fabric in this way, a release paper is placed on the side to which the pressure-sensitive adhesive is applied. It should be noted that it is more convenient to apply a pressure-sensitive adhesive to both sides of the tape as described above when applying the adhesive material to the corners of the substrate and when applying and applying the finishing material, and in the examples, the tape is applied in this way. Pressure-sensitive adhesive is applied to both sides of the split-fiber nonwoven fabric, but in order to clarify the selective application of the pressure-sensitive adhesive only to the tissue fiber side of the split-fiber nonwoven fabric, the pressure-sensitive adhesive is applied to both sides of the split-fiber nonwoven fabric. The pressure adhesive layer is not shown.

In addition, in order to apply a pressure-sensitive adhesive to both sides of the split fiber nonwoven fabric, first apply the pressure sensitive adhesive to a release paper in the same manner as above, place the split fiber nonwoven fabric on the pressure sensitive adhesive layer, This is done by applying a thin layer of pressure sensitive adhesive on top of it, overlaying it with a film made of the same material as the component of the split fiber nonwoven fabric, such as polyethylene or polypropylene, pressing it, and then peeling off the film. In this way, the pressure-sensitive adhesive on surfaces other than the tissue fiber surface will be peeled off by the film, but the pressure-sensitive adhesive on the tissue fiber surface will be removed because the film and the split fiber nonwoven fabric constituent material are the same material. It is not completely peeled off to the film side, but remains on the tissue fiber side, thereby achieving double-sided application of the pressure-sensitive adhesive on the split fiber nonwoven fabric.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway plan view schematically showing an embodiment of the building finishing base corner coating pasting material of the present invention.
FIG. 2 is an enlarged cross-sectional view taken along the line AA in FIG. 1, and FIG. 3 is an explanatory diagram showing a simplified state of use of the building material corner covering material. 1... Split fiber nonwoven fabric, 2... Pressure sensitive adhesive, 3... Tape, 4... Release paper.

Claims (1)

[Scope of Claims] 1 Split fiber nonwoven fabric 1 obtained by making split fibers by making small cracks in a polyolefin film and stacking them continuously in the vertical and horizontal directions and thermally fusing the fiber intersection points. A thin hard film made of a narrow base fabric with a width of 4 to 20 cm made by applying pressure-sensitive adhesive 2 only to the fibers, and a laminate of a synthetic resin film or thin metal plate and a thin plate made of wood or paper. The shaped material is cut into 0.5 to 5 cm width,
2. Pasted in parallel in the long side direction of the base fabric, leaving a minute gap between the side surfaces of the base fabric at the center of the short side thereof, and leaving a margin equivalent to the pasting allowance at both ends of the base fabric. This material is made up of a sheet of tape 3 and a release paper 4 placed on the pressure-sensitive adhesive coated side of the base fabric. 2. The building finishing material corner coating material according to claim 1, wherein the two tapes 3 are attached to the corner application side of the base fabric.