JP2016075086A - Substrate corner material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a substrate corner material of which a volume is reduced only a little, even when a putty material is dried sufficiently after being smoothed using a putty spatula.SOLUTION: A substrate corner material is a long material disposed along an intersecting line at an internal corner or an external corner where two wall surfaces with a finishing material intersect, and includes a bent part along a central part of the long substrate corner material in a longer-side direction, a pair of flat plate parts formed on both sides of the central part, and a plurality of open holes through front and rear surfaces of the pair of flat plates. All of the plurality of open holes are long holes with a greatest length along the longer-side direction of the long substrate corner material greater than a greatest width in a direction orthogonal to the longer-side direction.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a base corner material that is used at an exit corner or an entrance corner in which cloth bases such as gypsum boards are joined at substantially right angles.

  In the interior construction of buildings, the mainstream is construction with wall coverings (cloth) such as wallpaper, fabric, and synthetic resin cloth. When applying this type of wall covering material (cross), in order to obtain a beautiful finish, it is necessary to finish the base surface to a smooth surface without unevenness. The surface of gypsum board or plywood that is usually used is flat, but a seam appears at the joint.

  Therefore, putty treatment is applied to the seam of plasterboard or plywood to make it smooth. In particular, in the protruding corner, which is the corner on the protruding side, and in the corner, which is the corner on the concave side, in many cases, it becomes a seam of gypsum board or plywood, and the ground finish is troublesome. For example, in order to finish the corners and corners of the wall of a building flat, a thin synthetic resin L-shaped corner material is applied to the corners and corners, and corners are formed. The construction which smoothes is done.

  As the material of the L-shaped corner material, conventionally, paper, metal, synthetic resin, or a composite made by combining these materials has been commercialized.

  For example, in order to clearly reveal the corner portion of the corner portion where the two wall surfaces of the structural material of the building intersect and form the corner portion by the corner material having the protruding portion, a flat plate portion having a pair of rigidity, A hinge part that bendably connects between the pair of flat plate parts such that the pair of flat plate parts form an angle formed by the two wall surfaces, and projects at least one side of the hinge part with respect to the thickness direction of the flat plate part There has been proposed a corner material provided integrally with a protruding portion (see, for example, Patent Document 1).

  As such a corner material, it is pasted on the base so as to cover the corner portion, spread application of the putty agent from the top of the corner material, and after smoothing, the spread applied putty agent is sufficiently dried, Affix the cloth. In order to improve the familiarity of the putty agent, the base, and the corner material when the putty agent is spread and applied by a putty vera or the like, most of the corner material has a large number of through holes formed in the flat plate portion.

  There are various types of through-holes, such as round, oval, quadrilateral, oval, etc., and the drilling position is also mostly in a zigzag pattern with two or more rows on one flat plate. is there. Moreover, what equips a flat plate part with the same through-hole is rare, and what is provided with the through-hole which is different for every row | line | column of a flat plate part, and the thing provided with only a through-hole of a round shape are mainstream.

JP 2006-183409 A

  While the present inventor has individually verified the conventional base corner material, with regard to the base adjustment by the putty agent smoothed in the same manner by a patevera or the like, the putty agent according to the type of the through hole of the base corner material The present inventors have found that the degree of discoloration is different and have arrived at the present invention.

  An object of the present invention is to obtain a base corner material with less fraying even when the putty agent is smoothed with a patebella or the like and sufficiently dried.

The base corner material according to the invention described in claim 1 is a base corner material which is a long body arranged along an intersection line of an entrance corner portion or an exit corner portion where two wall surfaces crossed are crossed. And
A bent portion along a central portion along the longitudinal direction of the elongated body, a pair of flat plate portions formed on both sides of the central portion, and a plurality of through holes penetrating front and back surfaces of the pair of flat plate portions; With
All of the plurality of through holes are long holes having a long maximum vertical width along the longitudinal direction of the elongated body with respect to a maximum lateral width in a direction orthogonal to the longitudinal direction. is there.

  The base corner material according to the invention described in claim 2 is characterized in that the ratio of the maximum vertical width to the maximum horizontal width of the long hole according to claim 1 is 1.5 times or more. is there.

  The base corner material according to the invention described in claim 3 is characterized in that the long hole according to claim 1 or 2 is an oblong hole.

  The base corner material according to the invention described in claim 4 is characterized in that the long hole described in claim 1 or 2 is an elliptical hole.

  The base corner material according to the invention described in claim 5 is characterized in that the long hole described in claim 1 or 2 is a rhombus.

  The present invention has an effect that it is possible to obtain a base corner material with less fraying even when the putty agent is smoothed by a putty vera or the like and sufficiently dried.

It is explanatory drawing explaining the putty extending process to the through-hole of a base corner material. It is explanatory drawing which shows the structure of one Example of the foundation | substrate corner material of this invention, a figure is a top view, b figure is explanatory drawing which shows the shape of a through-hole. It is explanatory drawing which shows the structure of another Example of the base corner material of this invention, a figure is a top view, b figure is explanatory drawing which shows the shape of a through-hole. It is explanatory drawing which shows the structure of the comparative example of the foundation | substrate corner material of this invention, a figure is a top view, b figure is explanatory drawing which shows the shape of a through-hole. It is explanatory drawing which shows the structure of another comparative example of the base corner material of this invention, a figure is a top view, and b figure is explanatory drawing which shows the shape of a through-hole. It is explanatory drawing which shows the structure of another comparative example of the foundation | substrate corner material of this invention, a figure is a top view, b figure is explanatory drawing which shows the shape of a through-hole.

  In the present invention, it is a base corner material which is a long body arranged along the intersection line of the entrance corner portion or the exit corner portion where the two wall surfaces to be crossed intersect, and along the longitudinal direction of the long body A bent portion along the central portion, a pair of flat plate portions formed on both sides of the central portion, and a large number of through holes penetrating the front and back surfaces of the pair of flat plate portions, Since the maximum vertical width in the direction along the longitudinal direction of the elongated body is a long hole with respect to the maximum horizontal width in the direction orthogonal to the longitudinal direction, after being applied to the base and putty applied and smoothed Even when the putty agent is dried, there is an advantage that there is little waste.

  Specifically, when installing the base corner material, apply a thin putty agent on the corner to be installed, or attach the corner material to the corner with double-sided tape, and then apply the putty agent to the base corner. Apply from the top of the material, smooth both with a pateverer etc. so as to eliminate the step between the base corner material and the corner. At this time, since the step between the corner material and the corner portion extends in the longitudinal direction of the corner material, the operator spreads the putty agent along the longitudinal direction of the corner material with a patevera or the like.

  At this time, a clear difference occurs depending on the type of the through-hole of the base corner material with respect to the base smoothed in the same manner by a patevera or the like, and the long horizontal length in the direction orthogonal to the longitudinal direction is long. In the through-hole, which is a long hole having a long maximum vertical width in the direction along the longitudinal direction of the body, it has been verified that the putty agent has little fouling, and the present invention has been achieved.

  As for the through holes of the long holes formed in the pair of flat plate portions of the base corner material of the present invention, it is preferable that the ratio of the maximum vertical width length to the maximum horizontal width length of the long holes is 1.5 times or more. There is little and is good. Specific examples of the long hole include a long hole, an oblong hole, an elliptical hole, a rhombus, and the like.

  Regarding the mechanism of action of this phenomenon, various hypotheses are considered, but the following hypothesis seems to be the most powerful. That is, the putty agent to be spread is a mixture of fine aggregate and liquid such as water or adhesive, and is a kind of so-called “slurry fluid”, and the mechanism of action due to the behavior of this slurry fluid is good. Give an explanation. That is, when smoothing while spreading and applying the putty agent by reciprocating along the longitudinal direction along the longitudinal direction, the putty agent of the slurry fluid is solidified to oppose shear stress by the rapid movement of the putty, and then puttyvera Or fluidize after passing.

  Specifically, the slurry fluid is a suspension of liquid and solid particles, and is also called slurry, and it behaves like a solid and like a liquid depending on the situation. More specifically, thixotropy, which is a kind of slurry fluid, is a kind of non-Newtonian fluid and shows an intermediate substance such as a plastic solid such as a gel and a sol. It is considered that the putty agent used for the base preparation exhibits a similar behavior.

  FIG. 1 is an explanatory diagram for explaining a putty spreading process of a base corner material into a through hole. As shown in FIG. 1 a, the putty vera 14 moves the putty agent 15 to the through hole 13 while spreading the putty agent 15 on the flat plate portion 12 of the base corner material 11. As shown in FIG. b, when the putty agent is moved onto the through hole 13 of the flat plate portion 12 by being pushed by the putter 14, the putty agent 15 pushed by the putter 14 escapes into the through hole 13. At this time, since the through hole 13 is pushed in all directions, when the width of the through hole 13 is wide, it spreads over the entire wide width and extends in the direction opposite to the extending direction beyond the tip of the pateverer 14. It is thought that there is almost no escape of putty.

  As shown in FIG. c, when the through-hole 13 is narrow and long in the extending direction of the pate vera 14, the putty agent escapes in the direction opposite to the extending direction beyond the tip of the pate vera 14, It is considered that the flow lifted the surface of the through-hole portion once smoothed, and as a result, a phenomenon of swelling occurred.

  As shown in FIG. d, the putty 15 does not escape in the direction of the bottom surface of the through-hole 13 just before the putty 14 is removed from the through-hole 13, so that the once swollen surface remains as it is and the putty is dried. Along with this, even if the water evaporates, it is considered that as a result, it is difficult for the dust to be generated, and further, it may be swollen.

  In the present invention, all of a large number of through-holes penetrating the front and back surfaces of the pair of flat plate portions have a long maximum vertical width along the longitudinal direction of the long body relative to the maximum horizontal width orthogonal to the longitudinal direction. Since it is a hole, even if the putty agent is dried after being put on the base and smoothed by applying a putty, there is obtained an advantage that there is little waste.

  The base corner material of the present invention may be a long body arranged along the intersecting line of the entrance corner portion or the exit corner portion where two crossed wall surfaces intersect, and is made of paper, metal, or synthetic resin. Or what is necessary is just to comprise with the raw material which combined these materials and made it the composite. For example, an L-shaped corner material made of metal or plastic that is not flexible, or a flexible tape material made of synthetic resin, which has a bent portion in the center in the longitudinal direction, and is used to follow the bent portion at the time of use. What is called the corner tape material made into a shape should just be. In particular, if the material is flexible, the bent portion and the pair of flat plate portions are made of the same flexible material, or the pair of flat plate portions can hold a flat plate shape to some extent. In addition, the corner tape material in which the bent portion and the vicinity thereof are made of a flexible material is highly versatile.

  Examples of the synthetic resin material constituting the bent portion and the pair of flat plate portions include synthetic resins such as polyvinyl chloride, PET resin, HIPS resin, ABS resin, elastomer resin rubber, and composites thereof. As for flexibility, the pair of flat plate portions can be wound in a roll shape in a state of being flat with respect to the bent portion, and the pair of flat plate portions are bent portions when no force is applied to the long body. It suffices for the flexibility to have a restoring property that maintains the cross-sectional shapes substantially perpendicular to each other. For this purpose, a certain amount of thinness is required. Specifically, the flat plate portion has a thickness of 0.3 to 1.0 mm, preferably 0.4 to 0.6 mm, and the bent portion is thinner than the flat plate portion. Specifically, the thickness is 0.2 to 0.7 mm, preferably 0.25 to 0.5 mm.

  For example, a long body may be obtained by forming a pair of flat plate portions into an L shape with respect to the bent portion at the center while extruding a synthetic resin material with an extruder. In this case, the obtained long body can be wound in a roll shape with the pair of flat plate portions being flat with respect to the bent portion, and the pair of flat plate portions is in a state where no force is applied to the long body. However, it is only necessary to be configured so as to have a restoring property that maintains the cross-sectional shapes substantially orthogonal to each other with the bent portion interposed therebetween.

  The angle formed by the pair of flat plate portions of the base corner material of the present invention is substantially orthogonal, more specifically, 84 ° to 90 °, more preferably 86 ° to 90 °. If it exceeds 90 °, it will be easy to bend or lift when sticking the flat plate part to one side of the corner when it is placed in the corner of the exit corner. Similarly, if it is less than 84 °, it will be placed in the corner of the entrance corner. It is because it becomes easy to curve when sticking a flat plate part to one side of a corner.

  2A and 2B are explanatory views showing the configuration of an embodiment of the base corner material of the present invention. FIG. 2A is a plan view and FIG. 2B is an explanatory view showing the shape of a through hole. FIGS. 3A and 3B are explanatory views showing the configuration of another embodiment of the base corner material of the present invention. FIG. 3A is a plan view and FIG. 3B is an explanatory view showing the shape of a through hole. FIG. 4 is an explanatory view showing a configuration of a comparative example of the base corner material of the present invention, in which FIG. 4a is a plan view and FIG. 4b is an explanatory view showing the shape of a through hole. FIGS. 5A and 5B are explanatory views showing the structure of another comparative example of the base corner material of the present invention. FIG. 5A is a plan view and FIG. 5B is an explanatory view showing the shape of the through hole. 6A and 6B are explanatory views showing the structure of still another comparative example of the base corner material of the present invention. FIG. 6A is a plan view and FIG. 6B is an explanatory view showing the shape of a through hole.

  The base corner member 20 of the embodiment shown in FIG. 2 includes a pair of bent portions 22 formed along the central portion of the long body 21 along the longitudinal direction and a pair of sides formed on both sides of the central portion of the long body 21. The flat plate portion 23 and a pair of flat plate portions 23 are provided with a large number of through holes 24 formed in three rows penetrating the front and back surfaces. All of these many through holes 24 are oblong holes 24 whose maximum vertical width in the direction along the longitudinal direction of the long body is longer than the maximum horizontal width in the direction orthogonal to the longitudinal direction. More specifically, a capsule shape having a maximum horizontal width of 2.66 mm and a maximum vertical width of 5.32 mm was used.

  The base corner member 30 of the embodiment shown in FIG. 3 is similar to FIG. 2 in that the bent portion 32 along the central portion along the longitudinal direction of the long body 31 and both sides of the central portion of the long body 31. And a plurality of through holes 34 formed in three rows penetrating the front and back surfaces of the pair of flat plate portions 33. All of the large number of through holes 34 are rhombus holes 34 whose maximum vertical width in the direction along the longitudinal direction of the elongated body is longer than the maximum horizontal width in the direction orthogonal to the longitudinal direction. More specifically, a rhombus with a maximum width of 2.66 mm and a maximum length of 9.14 mm was used.

  The base corner material 40 of the comparative example shown in FIG. 4 includes a pair of bent portions 42 formed along the central portion along the longitudinal direction of the long body 41 and a pair of sides formed on both sides of the central portion of the long body 41. The flat plate portion 43 and a pair of flat plate portions 43 are provided with a large number of through holes 44 formed in three rows penetrating the front and back surfaces. All of the large number of through holes 44 are rhombus holes 44 whose length perpendicular to the longitudinal direction is equal to the length along the longitudinal direction of the elongated body. More specifically, the length perpendicular to the longitudinal direction and the length along the longitudinal direction are both 4.79 mm.

  The base corner material 50 of the comparative example shown in FIG. 5 includes a pair of bent portions 52 formed along the central portion along the longitudinal direction of the long body 51 and a pair of sides formed on both sides of the central portion of the long body 51. The flat plate portion 53 and a pair of flat plate portions 53 are provided with a large number of through holes 54 formed over three rows penetrating the front and back surfaces. All of the multiple through holes 54 are round holes 54. More specifically, a round shape with a diameter of 4 mm was used.

  The base corner material 60 of the comparative example shown in FIG. 6 includes a pair of bent portions 62 formed along the central portion of the long body 61 along the longitudinal direction and a pair of sides formed on both sides of the central portion of the long body 61. A flat plate portion 63 and a plurality of through holes 64 formed in three rows penetrating the front and back surfaces of the pair of flat plate portions 63 are provided. All of the large number of through holes 64 are horizontally long oblong holes 64 whose length in the direction along the longitudinal direction of the elongated body is short with respect to the length in the direction orthogonal to the longitudinal direction. More specifically, the round hole 24 shown in FIG. 2 is rotated by 90 degrees, and the capsule perpendicular to the longitudinal direction is 5.32 mm and the length along the longitudinal direction is 2.66 mm. Shaped.

  Using the base corner material shown in FIGS. 2 to 6, base adjustment was performed to verify the penetration at the through-hole portion. Specifically, after pasting each base corner material with a double-sided tape on a test piece on a prismatic material simulating the protruding corner, using the same putty agent, with the same operating procedure and operating speed with a putty vera The spread application operation of the putty agent was performed. For each base corner material, the same operation was performed with three test pieces each.

  The next day after the spread coating operation, the surface of the through-hole portion for base adjustment was verified. The verification was performed by a person who was different from the one that performed the base adjustment, and the specific corner material used was face down. The results are shown in Table 1. The amount of dust in the table indicates an average value of each, and is negative when it is dusted from the putty application surface, and positive when it is swollen, and the larger the value, the better the value.

  As shown in Table 1, the longer the hole shape in the longitudinal direction of the base corner material, the less the dust and the better results were obtained. On the other hand, it was shown that when the hole shape is long in the width direction, the result is rather worse than that of a round hole or rhombus having the same vertical and horizontal dimensions. If the amount of dust is positive, the putty agent coming out of the surface can be removed, so that it can be processed in a shorter time than the labor of applying the putty agent.

  As for the anchor effect, there is no clear difference in the shape of the hole, and it depends on the area and pitch of the hole (the larger the hole area, the smaller the pitch, the stronger the hole). If the hole shape of the invention is replaced with the same area, it is possible to improve the amount of fraying while maintaining the anchor effect.

11 ... Base corner material,
12 ... Flat plate part,
13 ... through hole,
14 ... Pate Vera,
15 ... Putty,
20: Base corner material,
21 ... Long body,
22 ... Bent part,
23: flat plate part,
24 ... through hole,
30: Base corner material,
31 ... Long body,
32 ... bent part,
33 ... Flat plate part,
34 ... through hole,

Claims (5)

It is a base corner material that is a long body arranged along the intersection line of the entrance corner or the exit corner where two wall surfaces crossed are crossed,
A bent portion along a central portion along the longitudinal direction of the elongated body, a pair of flat plate portions formed on both sides of the central portion, and a plurality of through holes penetrating front and back surfaces of the pair of flat plate portions; With
All of the plurality of through holes are long holes having a long maximum vertical width along the longitudinal direction of the elongated body with respect to a maximum lateral width in a direction orthogonal to the longitudinal direction. Wood.   The base corner material according to claim 1, wherein a ratio of a maximum vertical width length to a maximum horizontal width length of the long hole is 1.5 times or more.   The base corner material according to claim 1, wherein the elongated hole is an elongated round hole.   The base corner material according to claim 1, wherein the long hole is an elliptical hole.   The base corner material according to claim 1, wherein the long hole is a rhombus hole.

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