JP5483926B2 - Corner material for painted walls - Google Patents

Description

  The present invention is to attach to a corner portion (protruding corner) when finishing a wall surface of a building so that a painted wall can be easily constructed to a preferred thickness, and to make the corner portion finish good. It relates to the corner material used.

  The wall surface of the building is finished by a dry finishing method in which wallpaper, fabric, synthetic resin cloth, etc. are pasted on the surface of a wall base material such as plasterboard, or a wet finishing method, in which wall materials such as wall soil, diatomaceous earth, mortar are applied It has been broken. If the surface of the wall base material such as gypsum board has irregularities, it is constructed after finishing it flat with a putty etc. in advance, but the corner part such as the protruding corner part has a sharp ridge line part, Pre-finishing with putty etc. was difficult.

  In order to prefinish the corner of the wall of the building flatly, on the left and right sides in the longitudinal direction of the hinge portion made of soft synthetic resin having a thickness of 1 mm or less and a width of 2 mm or less, A corner material has been developed in which a flat plate made of a hard synthetic resin having a thickness is integrally connected, and an appropriate number of holes are formed in the flat plate (see Patent Document 1). This corner material is flattened by placing the hinge part on the corner of the building, bending this part at right angles, and sticking the left and right flat plates to the wall with adhesive. It is to become. This corner material is said to be able to perform the construction of the protruding corner portion and the entering corner portion by reversing the front and back.

  The corner material described in Patent Document 1 is a convenient material that can easily flatten a ground surface with many irregularities in the protruding corner portion, but the hinge part for bending is made of a thin and soft material. Therefore, the strength of the hinge part is weak, the strength of the edge part of the corner part becomes weak when it is used in the protruding corner, and deformation or damage easily occurs when another object collides with this part. there were.

  As a material that is unlikely to be deformed or damaged as described above, a shape in which a hinge is not provided and a hard flat plate is bent at a substantially right angle with a center line along its longitudinal direction has been put into practical use. This product is manufactured by extruding a synthetic resin into a bent shape having an L-shaped cross section in advance, and then sticking an adhesive tape (double-sided tape) to the bent flat plate portions and punching them. Are still bent at right angles to each other, so when the tape is attached to or drilled on one flat plate, the other flat plate becomes in the way, and the tape cannot be attached or drilled efficiently. There was a problem that the process became complicated.

  A patent application has been filed for a corner material having an L-shaped cross section that solves the above-mentioned problems of the conventional corner material, has a high bending portion strength, and is easy to manufacture (see Patent Document 2). The corner material described in Patent Document 2 uses a synthetic resin plate as a flat plate portion, and therefore has high strength, is easy to manufacture, and is suitable for use as a base for wallpaper or cloth. It is.

  Moreover, the corner material shown to patent document 3 is developed as a corner material used for the same use. The new corner material is formed by forming a crease along the center line of the paper sheet at the left and right center part of the paper sheet having a predetermined width and thickness, and penetrating the front and back of the flat plate part on both the left and right sides of the fold. The through holes are dispersed and perforated. Since this corner material is paper, the moisture of the wall material, such as wall soil, is absorbed by the corner material during wet finishing, so that the drying speed does not change much from other parts and color unevenness occurs. It is difficult, and because the material is paper, it has moderate waist strength and plastic deformability, it is easy to use, and it is said that it is excellent in adaptability to the unevenness of the foundation and adhesion of wet finishing materials Yes.

Japanese Utility Model Publication No. 62-40030 Japanese Patent Application Laid-Open No. 09-302888 JP 2004-346611 A

  By the way, it is difficult to adjust the thickness of the wall material to be applied to a predetermined preferable thickness in the wet finishing method in which a wall finishing material such as wall soil (hereinafter sometimes abbreviated as “wall material”) is applied. Needed. In addition, since the surface portion of the finished corner portion is formed only by the wall material, there is a problem that the strength is low and damage is easily caused. In addition, the corner material is pasted to the surface of the base gypsum board with an adhesive, but when the corner material is not successfully pasted, if the corner material is once peeled off and then pasted again, the surface of the gypsum board is removed. There was also a problem that the covering paper sheet was peeled off. Therefore, the present invention can easily adjust the thickness of the wall material to be applied to a predetermined thickness, and can obtain a corner portion reinforcing effect. The challenge is to provide corner materials that are difficult to peel off.

In order to solve the above problems, the present invention employs the following configuration. That is, the corner material according to the present invention forms a crease having a V-shaped cross section along the center line of a flat synthetic resin plate in which a plurality of through holes leading to the front and back are dispersed and perforated, and the surface on which the crease is formed. A protrusion with a predetermined height rising from the crease portion is formed on the opposite surface side portion along the crease, and the back surface side on which the V-groove fold is formed is adhered to avoid the crease. It is characterized by forming an agent layer .

  The action of this corner material is as follows. This corner material is applied to a corner portion (protruding corner) of a building or the like to be used, bent around the crease, and the flat plate portions of the bent plate are attached to both sides of the corner portion. In this case, it is convenient to provide an adhesive (including a so-called pressure-sensitive adhesive) on the attachment surface side (back side) of the flat plate portion.

  After pasting the corner, smooth the unevenness and step on the upper surface using a leveling material such as putty, and apply wet wall material on it. At this time, the thickness of the coating wall can be set to a predetermined thickness by applying the wall material until the projection (standing piece) of the crease portion is hidden.

  By applying the wall material until the corner material is covered with the projection provided at the crease portion as a guide, the thickness of the wall material layer can be easily set to a predetermined preferable thickness. For this reason, it is possible to accurately and easily form the wall material layer having a predetermined thickness without requiring special skill. Moreover, since the said protrusion exists as a core material in the corner part of the finished coating wall, the intensity | strength of a corner part is also high. In addition, a plurality of through holes are formed in the flat plate portion, and these through holes do not adhere to the base material. Therefore, when the corner material that has not been successfully applied is peeled off, the adhesive area is reduced. The paper sheet is difficult to peel off.

Since the fold is formed in a V-groove shape, it is easy to fold, and since a projection is formed on the opposite side (front side) of the V-groove fold, a V-groove fold is formed. Even so, the thickness at the bottom of the groove does not decrease so much, and a decrease in strength can be prevented. In addition, as described in claim 2, by forming the outer edge portion of the corner material in a wedge shape in cross section and gradually decreasing the thickness toward the outside, a step is hardly generated on the wall surface, and more it is possible to obtain a beautiful finish.

  Hereinafter, embodiments of the present invention will be specifically described. The corner material 1 is composed of flat plate portions 3 and 4 made of a pair of left and right elongated synthetic resin plates, and a fold portion 2 formed of the same synthetic resin. The flat plate portion 3 composed of a pair of left and right synthetic resin plates is connected and integrated through a fold portion 2, and has a shape in which the fold 2 is formed along the longitudinal direction at the center portion in the width direction of the corner material 1. It has become. As shown in FIG. 2, a streak 2a having a concave cross section is formed on the back surface side of the crease portion 2 (the side attached to the protruding corner). In the flat plate portions 3 and 4 on both the left and right sides of the crease portion 2, a large number of circular through holes 5,. This through-hole 5 is a through-hole for integrating putty and wall soil coated on the front and back during construction with the flat plate portion sandwiched between them, and is preferably a circular hole having a diameter of about 3 to 5 mm. The holes may be irregularly shaped, and the size may be appropriate depending on the use conditions.

  The corner material 1 has a width of several tens of mm (for example, the width of one flat plate section divided by the crease portion 2 is about 30 to 50 mm), and the flat plate portion has a thickness of about 0.5 to 2 mm. preferable. If the thickness is too large, the finished surface is raised as compared with other portions, which is not preferable. On the other hand, if it is too thin, the strength (so-called waist strength) will be insufficient and usability will deteriorate.

  As shown in FIG. 2, the outer edge portion 6 of the corner member 1 is formed in a cross-sectional wedge shape whose thickness gradually decreases toward the outside. For this reason, it is hard to produce a big level | step difference on the surface of the wall covering material of this part. In addition, the material of the corner material 1 is preferably a synthetic resin such as polystyrene, polyvinyl chloride, polypropylene, polystyrene, and ABS resin having moderate strength and good availability, and in practice, polystyrene is particularly preferable. won. Since a recycled material can be used as the synthetic resin material, it is effective for maintaining the environment.

  A protrusion (standing piece) 7 is integrally formed on the surface side of the crease portion 2 (the side on which wall material such as wall soil is applied). The height h of the protrusion 7 is preferably 1 to 5 mm, and more preferably 2 to 4 mm. Specifically, the height h may be set in accordance with the thickness of the coated wall material layer, and in a normal case, it was preferably 3 mm. The thickness d of the protrusion 7 is preferably 1 to 2 mm. If this thickness is too large, the finish of the corner portion tends to be poor, and conversely, if it is too small, the strength is weakened. As shown in FIG. 2, the tip of the projection 7 is preferably formed in a substantially wedge-shaped cross section so that the tip side becomes gradually thinner.

On the back side of the corner member 1, as shown in FIG. 2, an adhesive is applied over the entire surface of the flat plate portion avoiding the V-groove fold 2a . It is preferable to provide the pressure-sensitive adhesive layer 9 on the back side in this way because it is easy to attach to the wall base material . In addition, what is necessary is just to cover the surface with the release paper 10, when providing the adhesive layer 9. As shown in FIG.

  This corner material 1 can be continuously integrally formed using a desired synthetic resin sheet. After molding, the through-hole 5 is punched. In this case, the pressure-sensitive adhesive layer 9 is formed, and the release paper 10 is pasted on the pressure-sensitive adhesive layer 9 and then punched. It is convenient to wind the obtained long belt-shaped molded body in a roll shape, cut it out to an appropriate length on site, and use it.

  Next, the case where the corner portion C of the building is flattened using the corner material 1 will be described. First, the corner material 1 wound in a roll shape is cut to an appropriate length to cover the adhesive layer. The coated paper (release paper) 10 is peeled off to expose the adhesive layer, and the exposed adhesive layer is attached to the corner portion toward the wall material (see FIG. 3). Since the corner material 1 can be easily folded around the crease 2 provided at the center, it is easy to adapt to the shape of the ground.

  When this corner material 1 is attached to a corner portion C such as a wall, it is leveled by applying a leveling material 20 such as putty on the wall as necessary (from time to time) A wet wall material (wall finishing material) 30 is applied. As shown in FIG. 6, it is preferable to apply the putty after applying the reinforcing material 40 made of a net-like sheet (for example, trade name j-fiber tape manufactured by Shikoku Kasei Kogyo Co., Ltd.) as the base of the putty. In addition to ordinary putty, a plastic material such as a wall material kneaded with carbon fibers (for example, trade name carbon plaster manufactured by Shikoku Kasei Kogyo Co., Ltd.) can be used.

  After attaching the corner material 1 to the corner portion of the wall and applying the leveling material such as putty, the wet wall material such as wall soil is applied from above. At this time, it is applied to such a thickness that the projections 7 of the corner material 1 are well hidden. Thus, a wall material layer having a predetermined thickness can be easily formed using the height of the projection 7 as a guide.

It is a top view in the deployment state showing one embodiment of the present invention. It is AA sectional drawing in FIG. It is sectional drawing showing the state which attached the corner material to the protrusion corner. It is sectional drawing showing the state which applied the leveling material. It is sectional drawing which apply | coats a wall material and represents a state. It is sectional drawing showing the state which affixed the reinforcement material which consists of a net sheet.

1 corner material 2 crease part 3 flat plate part 4 flat plate part 5 through hole 7 protrusion (standing piece)
9 Adhesive layer 10 Release paper

Claims (2)

A fold having a V-shaped cross section is formed along the center line in the longitudinal direction on the back side surface of a flat synthetic resin plate in which a plurality of through holes leading to the front and back are dispersed and perforated, and the surface opposite to the surface on which the crease is formed On the side , a protrusion having a predetermined height rising from the crease forming portion is formed along the crease, and an adhesive layer is formed on the back side where the V-groove fold is formed, avoiding the crease. Corner material characterized by that. 2. The corner member according to claim 1, wherein an outer edge portion of the plate is formed in a wedge shape in cross section.

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