JP5952021B2 - Wall covering corner material and molding method thereof - Google Patents

Description

  The present invention provides a wall corner material used for finishing a corner portion such as a projecting corner portion or a corner portion of a building with a wall covering material in a satisfactory state and a molding method thereof. About.

  Conventionally, when finishing the above-described corner portion, a construction method in which a wall covering material such as wallpaper, fabric, or synthetic resin cloth is attached to a surface of a wall member made of, for example, a plaster board or the like is mainly used. In this case, the surface of the connecting part of the plasterboard, which is a wall material, has many irregularities, so when pasting the above-mentioned wall covering, it is pasted after finishing it flat with a putty etc. Since corners such as the corners and the corners have sharp ridges, it is difficult to finish with a putty or the like.

In view of this, the corner material of Patent Document 1 below, which has been devised to finish the corner portion flat, has been proposed.
In the corner material of Patent Document 1, a hinge portion is formed in the longitudinal direction along the belt-like sheet at the center in the width direction of the belt-like sheet formed of synthetic resin. In other words, this corner material is bent along the hinge part and attached with a double-sided adhesive tape or adhesive along the corner part where the two wall surfaces meet, and then wall coverings such as wallpaper and cloth are attached to the wall surface from above. In addition, the corner was finished.

  However, the above-mentioned corner material can be bent by molding its central part with soft synthetic resin, but the soft synthetic resin part becomes hard especially at low temperatures such as in winter, and the corner material is hinged during construction. When the flat plate portion is disposed on the wall surface by being bent at the portion, there is a problem that the flat plate portion is peeled off from the wall surface due to the restoring force at the hinge portion. For this reason, the corner material has to be held until the flat plate portion is securely bonded to the wall surface by the putty or the adhesive, which takes time and labor.

Japanese Patent No. 2882751

  An object of the present invention is to provide a wall covering corner material capable of constructing a corner portion such as a projecting corner portion or a corner portion of a building in a favorable state and a molding method thereof.

The present invention is a wall covering corner material that is adhered along a corner portion of an exit corner or an entrance corner where two wall surfaces intersect, and the wall covering corner material includes 50% by weight or more of an inorganic mineral. A belt-like sheet is formed, and at the center in the width direction of at least one of the front and back surfaces of the sheet, a grooved crease line formed by pressing the sheet in the thickness direction is formed along the sheet in the longitudinal direction. The left and right flat plates provided on both sides of the bent ruled line are provided so as to be foldable in both front and back directions along the bent ruled line. A low convex portion is arranged in the longitudinal direction along the bottom of the folding ruled line, and is formed into a groove shape that gradually becomes shallower as the distance from the portion becomes smaller with respect to the thinnest portion of the bent ruled line, Occasionally The width of the bending ruled line is formed to a width included in a range of 1.5 to 5 times based on the thickness of the sheet, and the depth of the bent ruled line is set to 0 based on the thickness of the sheet. .4 to 0.95 times the depth included in the range, and the height of the convex portion is included in the range of 5% to 95% based on the depth of the bent ruled line It is characterized by being formed.

According to this invention, corner parts, such as a corner of a building and an entrance corner, can be constructed in a good state.
More specifically, the folding ruled line of the wall covering corner material is bent according to the angle of the corner portion where the two wall surfaces intersect. Since the folding ruled line of the wall covering corner material and the corner of the corner are aligned straight, and the left and right flat plates are attached along the two wall surfaces forming the corner, the corner can be sharpened. it can.

  Thereby, for example, wall covering materials such as wallpaper, fabric, and synthetic resin cloth can be neatly adhered along the corner portion from above the wall covering corner member adhered to the corner portion.

The wall covering corner material is composed of a sheet containing 50% by weight or more of an inorganic mineral. For example, the wall covering adhesive contains the same or similar inorganic mineral as the inorganic mineral contained in the wall covering corner material. Adhesiveness to the putty is good. In particular, if an inorganic mineral is exposed on the surface of the sheet, the adhesiveness to the putty becomes higher.
Therefore, if the putty described above is used, the wall covering corner material can be firmly attached to the two wall surfaces forming the corner portion while being bent at a bending angle corresponding to the corner portion.

  The putty component is, for example, 60% calcium bicarbonate, 35% vinyl acetate resin, and 5% other additives. That is, since the putty is the same as or similar to the main component inorganic mineral constituting the wall covering corner material, the putty, mixing property, and adhesiveness with the wall covering corner material are good.

  Furthermore, for example, wall covering materials such as wallpaper, fabric, and synthetic resin cloth can be firmly bonded to the two wall surfaces forming the corner portion from the top of the wall covering corner material adhered to the corner portion. For example, it is possible to reliably prevent the wall covering material after the sticking from being lifted or peeled off.

In addition, by applying the putty described above onto a wall covering corner material adhered to the corner portion, the surface of the corner portion can be flattened with a putty and the corner portion can be sharpened. it can.
As a result, the above-mentioned wall covering material can be stuck at an acute angle along corner portions such as the projecting corner portion and the entering corner portion of the building, and can be constructed in a good state.
Note that the wall covering corner material may be adhered to the corner portion using an adhesive for wall covering such as an adhesive other than the putty.

And the sheet | seat with a bending ruled line to which the folding ruled line with favorable intensity | strength and bendability was attached can be obtained.
The folding ruled line attached to the sheet is formed in a groove shape that gradually becomes shallower as the distance from the bent ruled line becomes a reference with respect to the thinnest part of the bent ruled line. In addition, a convex portion lower than the depth of the bent ruled line is formed at the bottom of the bent ruled line and arranged in the longitudinal direction along the bottom of the bent ruled line.

The width of the folding ruled line is formed to a width included in a range of 1.5 to 5 times based on the thickness of the sheet. The depth of the folding ruled line is formed to a depth included in a range of 0.4 to 0.95 times based on the thickness of the sheet. The height of the convex portion is lower than the depth of the folding ruled line, and is formed to a height included in the range of 5% to 95% based on the depth of the folding ruled line.

The width and depth of the folding ruled line vary depending on the thickness of the sheet, but the width included in the range of 1.5 times to 5 times and the range of 0.4 times to 0.95 times based on the thickness of the sheet It is desirable to set to the depth included in.
That is, the width of the folding ruled line can be set to a width included in the range of 1.5 times to 5 times based on the thickness of the sheet.

If the width of the folded ruled line is set to be 1.5 times or less, when the sheet is folded so that the folded ruled line is on the front side, the radius of curvature (R) of the folded ruled line becomes small. It tends to occur.

The depth of the folding ruled line can be set to a depth included in the range of 0.4 times to 0.95 times based on the thickness of the sheet.
If the depth of the folding ruled line is set as shallow as 0.4 times or less, the thickness of the remaining thick part formed at the thinnest part of the bent ruled line is thicker, contrary to the above, and the restoring force of the sheet itself And the repulsive force increases, and the folding property of the folding ruled line is deteriorated.

Also, if the depth of the folding ruled line is set to 0.95 times or more, the thickness of the remaining thickness part formed in the thinnest part of the folding ruled line becomes thin, so the restoring force and repulsive force of the sheet itself Becomes smaller.
For this reason, the sheet can be easily bent in a desired direction and curvature, but for example, the probability that a tear or a hole is generated is increased.

The average thickness of the remaining thickness portion formed in the portion where the thickness of the folding ruled line is thinnest depends on the thickness of the sheet. The thickness of the remaining thickness portion is 15 on the basis of the thickness of the sheet. It is desirable to set the thickness within the range of% to 40%.

If the thickness of the remaining thickness portion is set to be 15% or less, the rigidity of the remaining thickness portion is weakened. Therefore, the remaining thickness portion is easily broken, and the probability that a hole is generated increases in relation to processing accuracy.
Further, when the thickness of the remaining thickness portion is set to 40% or more, the rigidity of the remaining thickness portion is increased, so that the bendability of the folded ruled line is deteriorated.

The convex portion is provided to reinforce the portion where the thickness of the folded ruled line is thin, and is provided continuously or intermittently in the longitudinal direction along the bottom portion where the thickness of the folded ruled line is thin.
The width, height, and pitch of the convex portions are important for obtaining a folded ruled line having excellent bendability. That is, by adjusting the proportions of the convex portions such as width and length, the strength of the bending strength of the portion where the folding ruled line is thin can be adjusted.

In other words, the convex portion increases the average thickness in the longitudinal direction of the folded ruled line so that the folded ruled line bends softly and obtains a ruled line structure with excellent bending properties.

The height of the convex portion is desirably formed to a height included in the range of 5% to 95% based on the depth of the bent ruled line.
If the height of the convex portion is set to 5% or less, the effect of adjusting the bending strength of the portion where the thickness of the folding ruled line is thin is greatly reduced.
The width of the convex portion varies depending on the pitch of the convex portions arranged in the longitudinal direction of the folding ruled line, but the width of the convex portion may be formed within a range of 1 to 10 times based on the thickness of the sheet. desirable. Moreover, you may cross | intersect the convex part at the angle included in the range of 15 degree | times-90 degree | times with respect to the longitudinal direction of a bending ruled line.

  In addition, wall corner materials containing inorganic minerals have a smaller coefficient of linear expansion than, for example, commercially available plastic corner materials, and can be used as cutting tools such as scissors and knives when cutting into lengths and widths corresponding to corner portions. Thus, it can be cut to a desired size more easily and easily than cutting cardboard.

  Commercially available plastic corner materials may crack when cut in low temperature conditions such as winter, or may not be cut according to dimensions, but wall corner materials containing inorganic minerals may be cut using the above-mentioned cutting tool even in low temperature conditions. Since it is easy to cut according to the dimensions without causing cracks, and a large force is not required at the time of cutting, workability during construction is improved.

  For example, the exit corner and the entrance corner are close to each other, and even if it is not possible to secure a space for attaching the wide wall corner material, it can be easily cut with the above cutting tool, If one or both of the flat plates of the wall covering corner material are cut in the longitudinal direction, the width can be adjusted to a dimension allowing sticking to a portion narrower than the width of the wall covering corner member.

In addition, wall corner materials containing 50% by weight or more of inorganic minerals have about half the calories burned when burned, do not generate toxic gases, have little impact on the natural environment, and are commercially available. Compared with the plastic corner material, the CO ₂ emission during combustion can be reduced by about 60% to about 70%.

Moreover, since the scrap of the wall covering corner material is composed of inorganic minerals by 50% by weight or more, it can be disposed of as general waste.
Furthermore, when breaking an old building that has passed for many years, a wall covering corner material containing 50% by weight or more of inorganic mineral adhered to the corner portion has less influence on the natural environment than a plastic corner material.

In addition, if a folding ruled line is attached to one side of the sheet, the flexibility to bend the wall covering corner material in both the front and back sides can be obtained, but if it is attached to both sides of the sheet, it can be applied to both the front and back sides. Not only can the same flexibility and bendability be obtained, but the restoring force for returning to the state prior to bending is reduced rather than being attached to one surface, so that it is more flexible than the corner material of Patent Document 1. Further improve.
Furthermore, the wall covering corner material of the present invention has an advantage that the bendability hardly changes even at low temperatures in winter.

  In other words, the folding ruled lines attached to the wall corner material are superior in strength and bendability to the folding ruled lines attached to commercially available plastic corner materials, and the restoring force to return to the state before the bending is small. It is possible to maintain the bent state at the corresponding angle. And since it can be bend | folded in any direction of front and back both surfaces, it can affix on any corner part of a protrusion corner part and an entrance corner part.

As an aspect of the present invention, a plurality of hole portions penetrating in the thickness direction of the flat plate are formed on the flat plate, and the hole portions are arranged at predetermined intervals in the longitudinal direction along the flat plate. it can.
According to the present invention, the wall covering corner material can be firmly attached to the wall surface of the corner portion.

In detail, for example, when a putty is applied from above the wall covering corner material attached to the corner portion, the putty entering the hole of the flat plate is also applied to the wall surface of the corner portion. The wall covering corner material can be firmly attached to the two wall surfaces forming the corner portion by the adhesive force.
As a result, the wall covering corner material can be stuck at an acute angle along corner portions such as a protruding corner portion and a corner portion of a building.

As an aspect of the present invention, at least one of the front and back surfaces of the flat plate is provided with either one of a large number of fine concave portions and convex portions, or a large number of fine concave portions and convex portions. Can do.
According to this invention, the large adhesive force required to maintain the sticking state of the wall covering corner material can be obtained.

  In detail, since the wall adhesive such as putty or adhesive is easily entangled with the concave and convex portions attached to the flat plate, the wall adhesive is applied to the flat plate rather than being applied to a flat surface. The adhesive of the agent is high, and a large adhesive force necessary to keep the wall covering corner material and the wall covering material in a sticking state can be obtained.

  As an attaching method for attaching the above-mentioned concave portions and convex portions, for example, a method of scratching the flat plate surface with a wire brush, and a processing of rubbing the flat plate surface with about 40 to 100 sandpaper. A method of processing by cutting the flat plate surface with sand blasting hard particles, a method of processing by pressing the flat plate surface with a roller having a large number of convex portions on the peripheral surface, etc. Is mentioned. If these methods are performed mechanically, the concave portion and the convex portion can be easily processed.

That is, if the concave or convex portion is processed into a flat plate surface by any one method selected from the above methods, the inorganic mineral contained in the wall covering corner material is exposed on the surface of the concave or convex portion. The above-mentioned wall covering adhesive is easily entangled with the inorganic mineral exposed on the surface of the concave portion or the convex portion, and the adhesion by the wall covering adhesive is improved.
The above-mentioned recessed part can be comprised by a groove part, a hole part, a hollow part, etc., for example. The convex portion can be constituted by, for example, a burr or a protrusion.

Moreover, as an aspect of this invention, the attachment area of the said recessed part and the said convex part which are attached to the said flat plate can be set so that it may become 10% or more per unit area.
According to this invention, the adhesive force required to maintain the adhered state of the wall covering corner material can be obtained.

More specifically, if the attachment area of the concave portion or the convex portion is set to 10% or less per unit area, for example, 1 cm ² as a unit area, the wall mounting adhesive such as putty or adhesive is less likely to be entangled. Adhesive strength necessary to maintain the attached state of the wearing corner material and wall covering material cannot be obtained.

  However, if the attachment area of the concave portion or the convex portion is set to 10% or more, the above-mentioned adhesive for wall covering is easily entangled, and the adhesive force of the adhesive for wall covering acts on the entire portion provided with the concave portion or convex portion. Adhesiveness is improved, and a large adhesive force necessary to maintain the state of adhesion of the wall covering corner material and wall covering material can be obtained.

As an aspect of the present invention, the inner diameter of the inner peripheral surface of the hole formed in the flat plate gradually increases from one surface attached to the wall surface of the flat plate toward the other surface of the flat plate. It can be formed on a tapered surface.
According to the present invention, the wall covering material can be neatly adhered along the corner portion, and the corner portion can be finished in a good state.

More specifically, the hole formed in the flat plate has a tapered shape in which the inner diameter gradually increases from one surface facing the wall surface to the other surface. Because it is easy to enter the depth of the part and is kept in the state of entering the hole part, the adhesive force by the wall covering adhesive is positively applied in the direction in which the flat plate and the wall surface are separated. .
Thereby, the adhesiveness of the wall covering corner material with respect to a corner part improves. Moreover, the adhesiveness of the wall covering material to the wall covering corner material is also improved.

As a result, it is possible to prevent the flat plate from peeling off from the wall surface or floating. Moreover, if the inorganic mineral is exposed on the inner peripheral surface of the hole, the adhesiveness with the putty becomes higher.
In addition, it is preferable to set the inclination angle of the tapered surface to an angle included in the range of 5 degrees to 80 degrees.

  As a result, when the above-mentioned wall covering material is attached to the corner portion, it is possible to reliably prevent the attachment position of the wall covering corner material attached to the corner portion from being displaced.

Further, as an aspect of the present invention, an adhesion means for adhering the flat plate to the wall surface can be provided on the surface of the flat plate attached to the wall surface.
According to this invention, it is possible to prevent the attachment position of the wall covering corner material attached to the corner portion from being displaced during the base finishing of the corner portion.

More specifically, when sticking the wall covering corner material along the corner portion, the left and right flat plates are pressed against the two wall surfaces forming the corner portion, and the opposing surfaces of the flat plate and the wall surface are bonded, for example. Temporary bonding is performed by an adhesive means such as an adhesive, an adhesive, and a double-sided adhesive tape.
As a result, the wall covering corner material can be temporarily bonded to the corner portion until the construction work for flatly finishing the surface of the corner portion with the wall covering adhesive is completed.

Moreover, as an aspect of the present invention, graduation lines can be provided on at least one of the front surface and the back surface of the sheet at predetermined intervals in the longitudinal direction along the sheet.
According to this invention, the wall covering corner material can be accurately cut into a length corresponding to the corner portion and used.

More specifically, for example, without using a measuring tool such as a tape measure or an object difference, it is possible to accurately measure the dimension of the corner portion by using the scale line attached to the wall corner material. At the position of the measured graduation line, the wall covering corner material is cut into a length corresponding to the corner portion with the above-mentioned cutting tool and attached, so that the wall covering corner material can be used effectively without waste. .
As a result, at the time of construction of the corner portion, it is possible to reduce the disposal amount of the wall covering corner material, and it is possible to reduce the construction cost.

  Further, as an aspect of the present invention, a convex portion formed on the bottom portion and a concave portion lower than the convex portion are formed on the bottom portion of the folding ruled line provided on at least one of the front surface and the back surface of the sheet. It can be arranged in the longitudinal direction along the folding ruled lines.

  According to this invention, it is possible to prevent the wall covering material to be stuck on the folded ruled line that is bent toward the front side of the wall covering corner material from being torn.

Specifically, for example, when the hinge part of the corner material of Patent Document 1 is bent toward the front side, the wall covering material adhered on the corner material is along a smooth surface exposed on the front side of the hinge part. Since the adhesive force such as putty and adhesive acts on the entire contacted surface, a large pulling force is applied to the corner portion of the wall covering material stuck on the hinge portion.
Therefore, for example, tears and wrinkles are likely to occur at the corner portions of the wall covering material corresponding to the hinge portion, and there is a problem that the wall covering material cannot be adhered in a good state along the corner portion. Even if the R surface of the hinge part has a radius of 0.2 mm, which will be described later, the above-described problem occurs.

  In contrast, the wall corner material according to the present invention has the bottom and convex portions of the folding ruled lines arranged in a concavo-convex shape in the longitudinal direction so that the folding ruled lines are on the front side at the corners of the protruding corners. When the wall covering material is folded so as to be, the wall covering material adhered on the wall covering corner material partially comes into contact with the R surface having the irregular shape of the bent ruled line.

  As a result, the tensile force applied to the wall covering material is small, and it is possible to prevent, for example, tearing, wrinkles, etc. from occurring on the wall covering material stuck on the folding ruled line, and the wall covering material along the corner portion. Can be attached in a good state.

Further, as an aspect of the present invention, a radius of 0.2 mm or more can be set on an R surface formed on a portion of the wall covering corner member that is bent so that the folding ruled line is on the front side.
According to this invention, when constructing the wall covering material so that the folding ruled line exposed on the front side of the wall covering corner material is covered, it is possible to prevent the portion corresponding to the folding ruled line from being broken.

In detail, when a wall covering corner material is attached to, for example, a corner portion of a protruding corner portion, the wall covering corner material is attached so that the folding ruled line is on the front side, but is exposed on the front side of the folding ruled line. Since the R surface portion to be set is set to have a radius of 0.2 mm or more, it is possible to prevent tearing of the attached portion of the wall covering material corresponding to the bent ruled line exposed on the front side of the wall covering corner member.
As a result, the wall covering material can be neatly adhered along the wall covering corner material adhered to the corner portion.

As an aspect of the present invention, the thickness of the sheet can be formed to a thickness included in a range of about 0.2 mm to 0.8 mm.
According to the present invention, a folded ruled line having good strength and bendability can be attached to the sheet.

  More specifically, when the thickness of the sheet is set to 0.2 mm or less, the rigidity becomes weak, so that it is not suitable for reinforcing the corner portion. In addition, if the thickness of the sheet is set to 0.8 mm or more, the rigidity becomes strong, so not only the folding property of the folding ruled line is deteriorated, but also a step is formed when the above-mentioned wall covering material is adhered, Appearance of the corner is poor.

Further, the present invention is a method for forming a wall covering corner material that is adhered along a corner portion of a protruding corner portion or an entering corner portion where two wall surfaces intersect, and is a belt-like shape containing 50% by weight or more of an inorganic mineral A ruled line blade is provided around the circumferential surface of at least one of the pair of upper and lower forming rollers that pressurize the sheet in the thickness direction, and the ruled line of the forming roller is provided around the sheet. While the blade is pressed in the thickness direction of the sheet and the sheet is conveyed in the longitudinal direction by the pair of upper and lower forming rollers, the folding ruled line is continuously provided in the longitudinal direction with respect to the central portion in the width direction of the sheet. A convex portion having a depth lower than the depth of the folding ruled line attached to the sheet is arranged in the longitudinal direction along the bottom of the folding ruled line, and the thickness of the bent ruled line is the thinnest. Forming a groove shape that gradually becomes shallower as the distance from the portion becomes a reference, and the width of the folding ruled line is a width included in a range of 1.5 to 5 times based on the thickness of the sheet Forming a depth of the bent ruled line to a depth included in a range of 0.4 to 0.95 times based on the thickness of the sheet, and the height of the convex portion It is characterized in that it is formed at a height included in a range of 5% to 95% based on the depth of the bent ruled line.

According to this invention, the wall covering corner material excellent in adhesiveness and bendability can be manufactured at low cost.
More specifically, for example, the cutting edge-shaped ruled line blade corresponding to the bent ruled line provided on the forming roller is pressed in the thickness direction of the continuous sheet in a strip shape, and while being conveyed in the longitudinal direction by a pair of upper and lower forming rollers, The folding ruled lines are continuously provided in the longitudinal direction with respect to the central portion in the width direction of the sheet.

In this way, if the folding ruled line is attached to one side of the sheet, the flexibility to bend the wall covering corner material in both the front and back directions can be obtained, but if it is attached to both sides of the sheet, it can be applied to both the front and back sides. Equivalent flexibility and bendability.
As a result, it can be used for both operations for bringing out corner portions such as the protruding corner portion and the entering corner portion at an acute angle.

  According to this invention, corner parts, such as a protrusion corner part and an entrance corner part, can be constructed in a favorable state.

The enlarged plan view of the wall covering corner material to which the bending ruled line was attached. Structure explanatory drawing of the wall covering corner material shown in FIG. The structure explanatory drawing of a bending ruled line. X2-X2 end surface sectional drawing of the bending ruled line shown in FIG. Structure explanatory drawing of the groove part attached to the flat plate. Explanatory drawing of the construction method for taking out the corner part of a protrusion corner part at an acute angle. Explanatory drawing of the construction method for taking out the corner part of an entrance corner part at an acute angle. The other explanatory view of composition of the wall covering corner material which attached the bending ruled line to the front and back. Explanatory drawing of the front and back attachment method of the bending ruled line by a roller type molding machine. Explanatory drawing of the other example which formed the groove part in the other pattern. Explanatory drawing of the other example which formed the hole part in hole shapes other than a circle. Explanatory drawing of the state bent so that a bending ruled line might become the front side.

An embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is an enlarged plan view of a wall covering corner material 1 provided with a folding ruled line 4.
FIG. 2 is a diagram illustrating the configuration of the wall covering corner member 1 shown in FIG. Specifically, FIG. 2 [a] is a partially enlarged plan view of the wall covering corner member 1 shown in FIG. 1, and FIG. 2 [b] is a cross-sectional view of the Y Y end surface of the wall covering corner member 1 shown in [a]. .

  FIG. 3 is an explanatory diagram of the configuration of the bent ruled line 4. More specifically, FIG. 3A is a partially enlarged plan view of the folding ruled line 4 shown in FIG. 2, and FIG. 3B is a cross-sectional view of the folded ruled line 4 shown in FIG. FIG. 4 is an X2-X2 end surface sectional view of the folding ruled line 4 shown in FIG.

  The cornering material 1 for wall covering according to the embodiment includes a strip-shaped sheet 2 (stone paper) containing 50% by weight or more of a powdered inorganic mineral Z, and a folding ruled line 4 attached to the center in the width direction B of the sheet 2; It is composed of left and right flat plates 3 connected so as to be foldable in both front and back directions by the bent ruled lines 4 and a large number of holes 5 formed in the left and right flat plates 3. Further, the wall covering corner material 1 is attached along the corner portions 40 of the protruding corner portion 20 and the entering corner portion 30 (see FIGS. 6 and 7).

Sheet 2 is composed of a composition containing 50% to 90% by weight of inorganic mineral Z, 10% to 40% by weight of plastic, and 1% to 5% by weight of additives. It is formed in the wall thickness _{T 1} that is included in the scope of 2Mm～0.8Mm (see FIG. 4).
At the center of the surface of the sheet 2 in the width direction B, a grooved ruled line 4 formed by pressing the sheet 2 in the thickness direction is provided along the sheet 2 in the longitudinal direction A.

  The left and right flat plates 3 are formed symmetrically on both sides in the width direction of the sheet 2 with the bent ruled line 4 as the center. In the flat plate 3, a large number of holes 5 penetrating in the thickness direction of the flat plate 3 are arranged along the flat plate 3 in the longitudinal direction A at predetermined intervals.

The inner peripheral surface of the hole 5 is formed as a tapered surface whose inner diameter gradually increases from the back surface attached to the wall surface 40 a of the corner portion 40 described later of the flat plate 3 toward the surface of the flat plate 3.
A large number of fine grooves 8 are provided on the entire surface of the flat plate 3 at irregular intervals. The attachment area of the groove 8 attached to the flat plate 3 is set to be 10% or more per unit area with respect to the surface of the flat plate 3 with 1 cm ² as a unit area (see FIGS. 1 to 5).

  Further, the sheet 6 is formed with an adhesive 6 for bonding the flat plate 3 to the wall surface 40a on the back surface of the flat plate 3, that is, the back surface attached to the wall surface 40a of the corner portion 40 described later. It is applied symmetrically with the ruled line 4 as the center.

  A strip-shaped release paper is detachably attached to the adhesive surface of the adhesive 6 applied to the flat plate 3 and is continuously attached in the longitudinal direction A along the sheet 2.

  Further, a graduation line 7 is attached to the central surface in the width direction B of the sheet 2 along a bent ruled line 4 attached to the sheet 2 at a predetermined interval with respect to the longitudinal direction A of the sheet 2.

  As shown in FIGS. 3 and 4, the folding ruled line 4 is formed in the semicircular curved surface portion 4a formed in a smooth curved surface shape when viewed from the longitudinal direction A of the sheet 2 and the bottom center of the curved surface portion 4a. It is composed of a convex portion 4b (see FIGS. 3A and 3B) having a smooth semicircular cross section when viewed from the width direction B.

Before and after the convex portion 4b forms a bent first groove 4c depth D ₁ of the same border 4. Further, a second groove portion 4d that is shallower than the first groove portion 4c is formed above the convex portion 4b. The first groove portions 4 c and the second groove portions 4 d are alternately arranged in the longitudinal direction A along the bottom of the bent ruled line 4.

  The curved surface portion 4a is formed with a smooth radius of curvature around the virtual center point P set at the center in the width direction of the bent ruled line 4, and the remaining thickness portion 4e formed at the thinnest portion of the bent ruled line 4 As a reference, the sheet 2 is formed in a semicircular shape with a smooth cross section as viewed from the longitudinal direction A so as to gradually become shallower as the distance from the remaining thickness portion 4e increases.

  That is, if the radius of curvature of the curved surface portion 4a is small, cracks are likely to be generated inside the folding ruled line 4. Therefore, it is desirable to process the bent ruled line 4 having a large curvature radius.

  The convex portions 4b are formed in the width direction B perpendicular to the longitudinal direction A of the folding ruled lines 4, and are arranged in a large number at predetermined intervals with respect to the longitudinal direction A along the bottom of the folding ruled lines 4. Yes.

The width W ₁ of the folding border 4, based on the thickness T ₁ of the sheet 2, and a width included in the range of 1.5 to 5 times (see Figure 4).
If the width W ₁ of the folded ruled line 4 is set to be 1.5 times or less, when the sheet 2 is folded so that the folded ruled line 4 is on the front side, the curvature radius (R) of the folded ruled line 4 becomes small. Cracks and cracks are likely to occur.
Further, when the sheet 2 is folded so that the folding ruled line 4 is on the inner side, both corners in the width direction of the folded ruled line 4 come into contact with each other, so that the bendability of the sheet 2 is deteriorated.

If the width W1 of the bent ruled line 4 is set to be 5 times or more, the pressure when pressing the ruled line cutting blade (not shown) against the sheet 2 becomes great, so that the processing accuracy of the bent ruled line 4 is deteriorated. .
Further, if the width W1 of the folded ruled line 4 is wide, the folded ruled line 4 is exposed to the outside, so that the appearance of the folded part becomes unsightly. Furthermore, the folding position of the folding ruled line 4 is easily displaced in the width direction, and the sheet 2 cannot be accurately folded along the folding ruled line 4.

The depth _{D 1} of the folding border 4, based on the thickness _{T 1} of the sheet 2, and a depth included in the range of 0.4 to 0.95 times (see FIG. 4).
Setting shallow depth D ₁ of the bent borders 4 to 0.4 times or less, the thickness T ₂ of the remaining thickness portion 4e which the thickness of the border 4 bent in the opposite is formed in the thinnest portion is thicker than the above Therefore, the restoring force and repulsive force of the sheet 2 itself are increased, and the folding property of the folding ruled line 4 is deteriorated.

When the depth D ₁ of the bent borders 4 deeper set than 0.95 times, the remaining thickness portion 4e thickness T ₂ of the wall thickness of the ruled line 4 is formed on the thinnest portion bent becomes thinner, the sheet 2 itself The restoring force and repulsive force of are reduced.

Remaining thickness portion thickness _{T 2} of the 4e, based on the thickness _{T 1} of the sheet 2, is formed in a thickness included in the range of 0.05 times to 0.5 times (see FIG. 4).
When the remaining thickness portion thickness T ₂ of the 4e are set with the following thin 0.05 times, the rigidity of the remaining thickness portion 4e is weak, the probability of easily torn from the portion, a hole in relation to processing accuracy occurs Becomes higher.
Further, by setting the thickness T ₂ of the remaining thickness portion 4e to a thickness of more than 0.5 times, the rigidity of the remaining thickness portion 4e is increased, the bending of the bending ruled line 4 becomes worse.

The height of the convex portion 4b H, based on the depth D ₁ of the folding border 4, is formed to a height that is included in the range of 5% to 95%.
When the height H of the convex portion 4b is set to be lower than 5%, the effect of adjusting the bending strength of the wall thickness T ₁ is thin portion of the folding border 4 is greatly reduced.

The width W ₂ of the convex portion 4b is varied by the pitch of the convex portion 4b which are arranged in the longitudinal direction A of the bent borders 4, based on the thickness T ₁ of the sheet 2, 1 to 10 times in the range It is formed in the width W ₂ contained.
Moreover, the convex part 4b cross | intersects the angle included in the range of 15 degree-90 degree | times with respect to the longitudinal direction A of the bending ruled line 4, and if the intersection angle is made small, the repulsive force at the time of bending will become weak. There are advantages.

Setting narrow convex portion 4b width W ₂ of the 1 times or less, the width of the remaining thickness portion 4e is widened, the reinforcing effect by the convex portion 4b becomes low, strength of the sheet 2 itself is remarkably reduced.
When the convex portion 4b width W ₂ of the set wider than 10 times, the width of the remaining thickness portion 4e is narrower, the reinforcing effect by the convex portion 4b is increased, the restoring force and the repulsive force of the sheet 2 itself is large Therefore, the bendability of the folding ruled line 4 is deteriorated.
As a result of the foregoing, the width of the convex portion 4b and the residual thickness portion 4e, it is desirable to set the one-to-one, the thickness T ₁ and the seat 2 is adjusted in accordance with the strength and bending resistance of the bent borders 4 be able to.

Moreover, the protrusion side corner | angular part r1 of the convex-shaped part 4b is formed in the smooth R surface of 0.01 mm or more (refer FIG.3 [b]).
If the protrusion side corner portion r1 of the convex portion 4b is formed on an R surface of 0.01 mm or more, when the sheet 2 is bent along the folding ruled line 4, the convex portion 4b has, for example, a chip or a crack. The effect which suppresses generating is acquired.
Further, when the sheet 2 is folded so that the folding ruled line 4 is on the front side, there is no angular portion on the projecting side of the convex portion 4b, and the fingertip is less likely to be caught, so that a good hand feeling can be obtained.

Further, both corners r2 in the width direction of the bent ruled line 4 are formed on a smooth R surface of 0.01 mm or more (see FIG. 4).
If the widthwise corners r2 of the folded ruled line 4 are formed on an R surface of 0.01 mm or more, when the sheet 2 is folded along the folded ruled line 4, the folded ruled line 4 has a thin portion, for example, a crack or Generation of cracks, powders, etc. can be prevented.

Next, a method of attaching the above-described groove 8 to the surface of the flat plate 3 will be described with reference to FIG. FIG. 5 is an explanatory diagram of the configuration of the groove 8 attached to the flat plate 3.
Specifically, FIG. 5A is an enlarged cross-sectional view of the groove portion 8 attached to the flat plate 3, FIG. 5B is a partially enlarged plan view of the flat plate 3 attached with the groove portion 8, and FIG. It is a side view explaining the processing method of 8.

That is, as shown in FIG. 5 [c], since the folding ruled line 4 is attached to the surface of the sheet 2, the surface of the flat plate 3 is processed so as to be scratched by the wire brush 10 that is harder than the sheet 2. It is possible to process a large number of fine groove portions 8 that become concave portions at irregular directions and intervals.
Further, at the time of scratching, the burr 8a serving as a protrusion protrudes to one side edge, both side edges, and the peripheral edge of the groove 8 (see FIG. 5 [a]).

The depth D ₂ of the groove 8 which is processed in the manner described above, are formed to a depth included in the range of about 0.01 mm to 0.1 mm. Further, the width W _{3 of the} groove 8 is formed to be a width included in a range of about 0.01 mm to 0.2 mm.
The height H ₂ of the burr 8a forms a height included in the range of about 0.001Mm～0.02Mm (see Figure 5 [a]).

  In addition, after processing the above-mentioned groove part 8 on the surface of the flat plate 3, you may attach the bending ruled line 4. FIG. Further, the groove portion 8 may be provided at almost equal intervals with respect to the entire surface of the flat plate 3. Furthermore, the groove 8 may be provided on the entire back surface of the flat plate 3.

Next, the construction method for taking out the corner part 40 of the protruding corner part 20 shown in FIG. 6 at an acute angle using the above-mentioned wall covering corner material 1 will be described.
First, as shown in FIG. 6, the folding ruled line 4 of the wall covering corner material 1 is bent so as to protrude toward the front side in accordance with the angle of the corner portion 40 where the two wall surfaces 40a of the protruding corner portion 20 intersect.

  The folding ruled line 4 of the wall covering corner material 1 and the corner portion of the corner portion 40 are aligned straight, the left and right flat plates 3 are pressed against the two wall surfaces 40a forming the corner portion 40, and the flat plate 3 The adhesive 6 (see FIG. 2) applied to the back surface is temporarily bonded along the two wall surfaces 40a.

  Thereby, the corner part 40 of the protrusion corner part 20 can be taken out at an acute angle. Further, it is possible to prevent the attachment position of the wall covering corner material 1 from being displaced until the construction work for flatly finishing the surface of the corner portion 40 with the putty 50 is completed.

  Next, from the top of the wall covering corner material 1 adhered to the corner portion 40, an inorganic mineral Z contained in the wall covering corner material 1 and a putty 50 containing the same or similar inorganic mineral Z are applied, and left and right Apply almost evenly to the entire surface of the flat plate 3. In addition, at the same time as applying to a large number of holes 5 formed in the left and right flat plates 3, it is also applied to the step portions of the end portions of the flat plate 3 and the wall surface 40a to finish the substrate in a flat state.

  After that, for example, wall covering material (not shown) such as wallpaper, cloth, synthetic resin cloth, etc., is attached to the corner portion 40 along the two wall surfaces 40a forming the corner portion 40 from above the wall covering corner member 1. Therefore, the corner portion 40 of the protruding corner portion 20 can be finished with an acute angle.

  Moreover, since the inorganic mineral Z contained in the wall covering corner material 1 is exposed on the inner peripheral surface of the hole 5 formed in the flat plate 3, the inorganic mineral Z of the same or similar type as the inorganic mineral Z is contained. Adhesiveness with the putty 50 is good, and it is easy to remain on the surface of the flat plate 3. Therefore, when the surface of the corner portion 40 is flattened with the putty 50, the trouble of repainting the putty 50 many times is saved, and the putty application work Can be shortened.

  Furthermore, since the putty 50 that has entered the hole 5 is integrally coupled with the putty 50 applied to the wall surface 40 a, the wall covering corner material 1 is firmly attached to the two wall surfaces 40 a forming the corner portion 40. Can be attached.

  Furthermore, since the putty 50 that has flowed into the hole 5 is integrally coupled with the putty 50 applied to the surface of the flat plate 3, the wall covering material can be firmly attached to the surface of the flat plate 3. it can.

As described above, the wall covering corner material 1 is bent at an angle corresponding to the corner portion 40 of the protruding corner portion 20, and the folding ruled line 4 of the wall covering corner material 1 and the corner portion of the corner portion 40 are straightly matched. Thus, since the wall covering corner material 1 is temporarily bonded along the corner portion 40, the corner portion 40 can be brought out at an acute angle.
The wall covering corner material 1 can be wound in a roll shape and carried to a construction site or the like.

  Further, the folding ruled line 4 of the wall covering corner material 1 has a structure that allows the wall covering corner material 1 to be bent in both the front and back directions. The present invention is not limited to the protruding corner portion 20 and can be used for both operations for bringing the corner portion 40 of the entering corner portion 30 shown in FIG. 7 into an acute angle.

  Further, the folding ruled lines 4 of the wall covering corner material 1 have a structure that allows the wall covering corner material 1 to be bent in both the front and back directions. When it is bent at an angle corresponding to the corner portion 40 of the portion 30, the restoring force for returning to the state before the bending is weaker than the corner material of the patent document.

  Therefore, the wall covering corner material 1 can be kept in a state of being bent at a bending angle along the two wall surfaces 40 a forming the corner portion 40 of the protruding corner portion 20 or the entering corner portion 30.

That is, unlike the corner material of Patent Document 1, it is not necessary to hold the folded state of the wall covering corner material 1 until, for example, the putty 50 or the adhesive is cured, and the wall covering material is pasted on the corner portion 40. The work efficiency when wearing is greatly improved, and the construction period can be shortened.
Furthermore, since the above-mentioned wall covering material is stuck at an acute angle along the corner portion 40 from the top of the wall covering corner material 1 stuck on the corner portion 40, the corner portion 40 can be constructed in a good state. it can.

  Further, the hole 5 formed in the flat plate 3 has a tapered shape in which the inner diameter gradually increases from one back surface facing the wall surface 40a toward the other surface. In addition, when the putty 50 entering the hole 5 and the putty 50 applied to the wall surface 40a are integrally coupled, the sticking resistance by the putty 50 separates the flat plate 3 and the wall surface 40a. Will be positively given to the direction.

  Thereby, it can prevent that the flat plate 3 peels off from the wall surface 40a, or floats up. Further, since the inorganic mineral Z is exposed on the inner peripheral surface of the hole portion 5, the adhesiveness with the putty 50 becomes higher.

  Therefore, when sticking the above-mentioned wall covering material to the corner part 40, it can prevent reliably that the sticking position of the wall covering corner material 1 stuck to this corner part 40 is displaced. Further, the wall covering material can be neatly adhered along the corner portion 40.

  Further, for example, the dimension of the corner portion 40 can be accurately measured by using the scale line 7 attached to the wall covering corner material 1 without using a measuring tool such as a tape measure or a material difference. If the wall covering corner material 1 is cut in the width direction with the above-described cutting tool along the measured scale line 7, the wall covering corner material 1 can be used effectively without waste.

  Therefore, the wall covering corner material 1 can be used by being accurately cut into a length or width corresponding to the corner portion 40. Moreover, at the time of construction of the corner part 40, the disposal amount of the wall covering corner material 1 can be reduced, and the construction cost can be reduced.

Further, when the wall covering corner material 1 is attached to the corner portion 40 of the protruding corner portion 20, the wall covering corner material 1 is attached so that the folding ruled line 4 is on the front side. Since the R surface portion 9 exposed to the front side is set to have a radius of 0.2 mm or more (see FIG. 12), the wall covering material is constructed so that the wall covering corner material 1 adhered to the corner portion 40 is covered. In addition, it is possible to prevent tearing of the portion corresponding to the R surface portion 9 of the wall covering material.
Therefore, the wall covering material can be neatly adhered along the R surface of the wall covering corner material 1 adhered to the corner portion 40.

  Furthermore, since the bottom part of the curved surface part 4a having the concave shape of the folding ruled line 4 and the convex part 4b are arranged in a concavo-convex shape in the longitudinal direction A, when the folding ruled line 4 is folded so as to be on the front side, The wall covering material stuck on the wall covering corner material 1 comes into partial contact with the R surface portion 9 having the concavo-convex shape of the bent ruled line 4 (see FIG. 12).

  For this reason, the tensile force applied to the wall covering material is small, and it is possible to prevent, for example, tearing, wrinkles, and the like from occurring at the corner portions of the wall covering material corresponding to the folding ruled lines 4, and the wall covering material to the corner portion 40 Can be attached in a good state.

  Further, the wall covering corner material 1 containing 50% by weight or more of the inorganic mineral Z can be used according to the dimensions without causing cracking, for example, using a cutting tool (not shown) such as scissors or a knife even in a low temperature state. Since it is easy to cut and does not require a large force during cutting, workability during construction is improved.

Next, the construction method for taking out the corner part 40 of the entrance corner part 30 shown in FIG. 7 at an acute angle using the above-mentioned wall covering corner material 1 will be described.
First, the folding ruled line 4 of the wall covering corner material 1 is bent so as to protrude toward the back side in accordance with the angle of the corner portion 40 where the two wall surfaces 40a of the entering corner portion 30 intersect.

  The folding ruled line 4 of the wall covering corner material 1 and the corner portion of the corner portion 40 are aligned straight, the left and right flat plates 3 are pressed against the two wall surfaces 40a forming the corner portion 40, and the flat plate 3 The adhesive 6 applied to the back surface is temporarily bonded along the two wall surfaces 40a.

  Next, the above-mentioned putty 50 is applied from above the cornering material 1 for wall covering adhered to the corner portion 40, and is applied almost uniformly to the entire surface of the left and right flat plates 3. In addition, at the same time as applying to a large number of holes 5 formed in the flat plate 3, it is also applied to the step portion of the end portion of the flat plate 3 and the wall surface 40 a to finish the substrate in a flat state.

  Thereafter, the above-mentioned wall covering material is attached to the two wall surfaces 40a forming the corner portion 40 from the top of the wall covering corner material 1 attached to the corner portion 40. Finishing construction can be done.

  Further, as shown in FIG. 7, the protruding corner portion 20 and the entering corner portion 30 are close to each other, and a space for attaching the wide wall corner material 1 to the corner portion 40 of the entering corner portion 30 is provided. Even if it cannot be ensured, it can be easily cut with the above-mentioned cutting tool. Therefore, if one or both of the flat plates 3 of the wall covering corner material 1 are cut in the longitudinal direction A, a portion narrower than the width of the wall covering corner material 1 In contrast, the width can be adjusted to a dimension that allows adhering.

Next, another configuration of the wall corner material 1 in which the folding ruled lines 4 are attached to both the front and back surfaces of the sheet 2 will be described with reference to FIG.
FIG. 8 is an explanatory diagram of another configuration of the wall covering corner material 1. If it explains in full detail, it is the end surface sectional drawing of the wall covering corner material 1 which attached the bending ruled line 4 of the same structure to front and back both surfaces.

  In the other configuration described above, the folding ruled lines 4 provided on both the front and back surfaces of the sheet 2 have the same configuration, and the same components as those in the above embodiment are denoted by the same reference numerals and detailed description thereof is omitted.

  If the folding ruled lines 4 of the above embodiment are attached only to the surface of the sheet 2, the wall cornering material 1 can be bent in both front and back directions. However, as shown in FIG. If 4 is attached to both the front and back sides of the sheet 2, not only the same flexibility and bendability are obtained in both the front and back directions, but also it tries to return to the state before folding rather than being attached only to one surface. Since the restoring force is reduced, the flexibility is further improved as compared with the corner material of Patent Document 1.

  As a result, the application of the wall covering corner material 1 is not limited to the protruding corner portion 20 shown in FIG. 6, and can be used for both operations for bringing out the corner portion 40 of the entering corner portion 30 shown in FIG. 7 at an acute angle. .

  When the above-described bent ruled lines 4 are attached to both the front and back surfaces of the sheet 2, they are attached using a roller type molding machine 11 shown in FIG. In addition, you may press and attach not only the roller system of illustration but a strip-shaped ruled line blade (not shown).

  More specifically, the long sheet 2 continuous in a belt shape is continuously conveyed in the longitudinal direction A while being sandwiched between a pair of upper and lower forming rollers 12 provided with a cutting edge-shaped ruled line blade 12a corresponding to the bent ruled line 4. The ruled line blade 12 a provided at the center of the peripheral surface of the forming roller 12 is pressed against the center in the width direction of both the front and back surfaces of the sheet 2.

  The central part in the width direction of the sheet 2 is pressed by the ruled line blades 12a of the upper and lower forming rollers 12 so that the thickness is reduced, and the folded ruled lines 4 of the grooves as shown in FIGS. Attached continuously in the longitudinal direction A along both sides.

  When the bent ruled line 4 is attached only to the front surface of the sheet 2 (see FIG. 2B), the back side of the sheet 2 is supported by the forming roller 12 without the ruled line blade 12a. In addition, the hole 5 and the groove 8 may be processed into the sheet 2 at a stage before or after the step of attaching the bent ruled line 4.

In other configurations described below, the same components as those in the above embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
First, another example in which the groove 8 described above is formed in a pattern other than the pattern shown in FIG. 5B will be described with reference to FIG.
FIG. 10A shows a pattern in which linear groove portions 8b are obliquely intersected and arranged on the left and right. FIG. 10B shows a pattern in which the linear groove portions 8b intersect in the vertical and horizontal directions and are arranged in a lattice pattern. FIG. 10C shows a pattern in which fine holes 8c are formed by sandblasting instead of the grooves 8b. FIG. 10D shows a pattern in which linear groove portions 8 b are arranged in parallel in parallel with the longitudinal direction A of the sheet 2. FIG. 10E shows a pattern in which concave depressions 8d are arranged at equal intervals. Alternatively, convex protrusions (not shown) may be arranged in place of the depressions 8d.

  That is, the groove part 8b, the hole part 8c, and the hollow part 8d may be arranged in the above-described pattern, and the operation and effect substantially the same as those of the above embodiment can be achieved. In addition, you may arrange in patterns other than the above-mentioned pattern.

Next, another example in which the hole 5 described above is formed in a hole shape other than the circle shown in FIG. 2A will be described with reference to FIG.
In FIG. 11 [a], the hole 5 is formed in a triangular shape. Further, in FIG. 11B, the hole 5 is formed in a square shape. Moreover, FIG. 11 [c] forms the hole 5 in a pentagon. Further, in FIG. 11D, the hole 5 is formed in a hexagonal shape. Further, in FIG. 11 [e], the hole 5 is formed in a star shape.

  That is, the wall covering corner material 1 containing an inorganic mineral has a smaller linear expansion coefficient than a commercially available plastic corner material, and can be easily cut according to dimensions without causing cracks. Even if the hole shape is complicated and the corners are sharp, it can be processed accurately according to the dimensions.

  Further, if the hole 5 is formed in a hole shape having the above pattern, the surface area of the inner periphery of the hole is larger than that of the round shape, so that the pattern for the inorganic mineral Z exposed on the inner peripheral surface of the hole 5 is increased. The adhesion of 50 is also higher.

  Therefore, the wall covering corner material 1 can be more firmly attached to the wall surface 40a of the corner portion 40, and the operation and effect substantially equivalent to or better than the above embodiment can be achieved. Moreover, you may form in hole shape other than the above-mentioned pattern.

In the correspondence between the configuration of the present invention and the embodiment,
The concave portion of the present invention corresponds to the groove portions 8 and 8b, the hole portion 8c, and the recessed portion 8d of the embodiment,
Similarly,
The convex part corresponds to the burr 8a, the protrusion, etc.
The concave portion corresponds to the bottom of the curved surface portion 4a having a concave shape,
The present invention is not limited to the configuration of the above-described embodiment, and can be applied based on the technical idea shown in the claims such as a plate having no hole, and many embodiments are possible. Can be obtained.

Z ... Inorganic mineral 1 ... Corner material for wall covering 2 ... Sheet 3 ... Flat plate 4 ... Bending ruled line 4a ... Curved surface part 4b ... Convex part 4c ... 1st groove part 4d ... 2nd groove part 4e ... Remaining thickness part 5 ... Hole part 6 ... Adhesive 7 ... Scale line 8 ... Groove part 8a ... Burr 8b ... Groove part 8c ... Hole part 8d ... Dimple part 9 ... R surface part 10 ... Wire brush 11 ... Roller molding machine 12 ... Forming roller 12a ... Rule line blade 20 ... Lead corner 30 ... Corner part 40 ... Corner part 40a ... Wall surface 50 ... Putty

Claims (11)

A wall covering corner material that is stuck along the corner of the corner where the two wall surfaces intersect or the corner of the corner,
The wall covering corner material,
Consists of a belt-like sheet containing 50% by weight or more of inorganic minerals,
At the center in the width direction of at least one of the front and back surfaces of the sheet, a bending ruled line of a groove formed by pressing the sheet in the thickness direction is provided along the sheet in the longitudinal direction,
The left and right flat plates connected to both sides of the bent ruled line are provided so as to be foldable in both front and back directions along the bent ruled line ,
The bent ruled line,
A convex portion lower than the depth of the folding ruled line attached to the sheet is arranged in the longitudinal direction along the bottom of the folding ruled line,
Based on the thinnest part of the bent ruled line, it is formed into a groove shape that gradually becomes shallower as it gets away from the part,
The width of the bent ruled line is formed to a width included in a range of 1.5 to 5 times based on the thickness of the sheet,
The depth of the bent ruled line is formed to a depth included in a range of 0.4 times to 0.95 times based on the thickness of the sheet,
The wall covering corner material in which the height of the convex portion is formed to a height included in a range of 5% to 95% on the basis of the depth of the bent ruled line . The wall mounting according to claim 1, wherein a plurality of hole portions penetrating in the thickness direction of the flat plate are formed in the flat plate, and the hole portions are arranged at predetermined intervals in the longitudinal direction along the flat plate. Corner material. The wall according to claim 1 or 2, wherein at least one of the front and back surfaces of the flat plate is provided with either one of a large number of fine concave portions and convex portions, or both of a large number of fine concave portions and convex portions. Wearing corner material. The wall covering corner material according to claim 3, wherein an attachment area of the concave portion and the convex portion attached to the flat plate is set to be 10% or more per unit area. The inner peripheral surface of the hole formed in the flat plate,
The wall covering corner material according to claim 2, wherein the wall covering corner member is formed in a tapered surface having an inner diameter gradually increasing from one surface of the flat plate attached to the wall surface to the other surface of the flat plate. The wall covering corner material according to any one of claims 1 to 5, wherein an adhesive means for adhering the flat plate to the wall surface is provided on a surface of the flat plate attached to the wall surface. The wall covering corner material according to any one of claims 1 to 6, wherein graduation lines are provided on at least one of the front surface and the back surface of the sheet at predetermined intervals in the longitudinal direction along the sheet. A convex part formed on the bottom part and a concave part lower than the convex part in the longitudinal direction along the folding ruled line at the bottom part of the folding ruled line provided on at least one of the front and back surfaces of the sheet The wall covering corner material according to any one of claims 1 to 7, which is arranged. The R surface portion formed when the wall covering corner material is bent so that the folding ruled line is on the front side is set to an R surface having a radius of 0.2 mm or more. Corner material for wall decoration. The wall covering corner material according to any one of claims 1 to 9, wherein a thickness of the sheet is formed to a thickness included in a range of about 0.2 mm to 0.8 mm. A method of forming a wall covering corner material to be adhered along a corner portion of an exit corner or an entrance corner where two wall surfaces intersect,
A ruled line for attaching a grooved ruled line to the sheet on the peripheral surface of at least one of a pair of upper and lower forming rollers for pressing in the thickness direction a strip-shaped sheet containing 50% by weight or more of an inorganic mineral. Around the blade,
While pressing the ruled line blade of the forming roller in the thickness direction of the sheet and conveying the sheet in the longitudinal direction by the pair of upper and lower forming rollers, the bent ruled line is longitudinally formed with respect to the central portion in the width direction of the sheet. continuous and attached to,
The bent ruled line,
A convex portion lower than the depth of the folding ruled line attached to the sheet is arranged in the longitudinal direction along the bottom of the folding ruled line,
Based on the thinnest part of the bent ruled line, it is formed into a groove shape that gradually becomes shallower as it gets away from the part,
The width of the bent ruled line is formed to a width included in a range of 1.5 to 5 times based on the thickness of the sheet,
The depth of the bent ruled line is formed to a depth included in a range of 0.4 times to 0.95 times based on the thickness of the sheet,
The method for forming a corner member for wall covering , wherein the height of the convex portion is formed to a height included in a range of 5% to 95% on the basis of the depth of the bent ruled line .

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