JP5860324B2 - Corner tape - Google Patents

Description

  The present invention relates to a corner tape, and more particularly to a corner tape that is used by being attached to an entrance corner or an exit corner of an interior base.

  The walls of the interior of the building are finished by putting the surface of the wall material such as gypsum board into a flat surface with putty etc. and then painting, wallpaper, fabric, synthetic resin cloth, etc. Corner portions such as ridges (protruding corners, entering corners) adjacent to each other at a substantially right angle are difficult to finish with putty because the corners are sharp.

  In order to enable putty finishing of the corner portion, a corner tape having an adhesive layer and a plurality of holes has been proposed (Patent Documents 1 and 2).

  The corner tape proposed in Patent Document 1 has a cross-sectional configuration in which a long thin plate made of resin is used as a substrate and double-sided tape is laminated, and putty or the like is applied to the opposite surface of the double-sided tape through the substrate. The corner tape has a smooth finish.

  However, since the corner tape of Patent Document 1 uses a thin plate as a substrate, the applied putty and the substrate are weakly adhered, and there is a problem that the putty is peeled off during the putty construction or by subsequent vibration / impact. Cheap.

  In the method described in Patent Document 1, punching is performed on the substrate to improve the adhesion between the substrate and the putty, a plurality of rows of holes are formed, and the putty physically enters the holes to improve the putty peeling. ing.

  In this punching process, the putty is only caught in the hole, and it can not be said that it is closely adhered. The problem of workability that is bad remains.

JP 2006-83655 A JP 2004-346611 A

  An object of the present invention is to provide a corner tape that has good contact with a putty and has a good bite even during construction, that is, the putty is prevented from falling off. Furthermore, it is to provide a corner tape that can reduce the amount of putty finishing and the drying and curing time by reducing the thickness of the corner tape itself and the putty.

  Under such circumstances, as a result of intensive studies, the present inventors have improved the adhesiveness of putty by tearing or peeling off at least some fibers on the surface of the tape base material constituting the corner tape, It has been found that the above problems can be solved. The present invention is based on such novel findings.

Accordingly, the present invention provides a corner tape and a method for producing the corner tape shown in the following section:
Item 1. A corner tape 1 in which a first tape base material 5, a second tape base material 4, 4 ′, an adhesive layer 3, 3 ′, and a release layer 2, 2 ′ are laminated in this order,
Said 2nd tape base materials 4 and 4 'are arrange | positioned in the substantially symmetrical position with respect to the virtual centerline 6 of the 1st tape base material 5, and at least one part of the surface of the 1st tape base material 5 is fluff. Standing corner tape.

  Item 2. The first tape base material 5 is a nonwoven fabric, a woven fabric having warps and wefts, and a fabric selected from a combination thereof, or a laminated fabric obtained by laminating the fabric, and the fibers constituting the nonwoven fabric Item 2. The corner tape according to Item 1, wherein a part of the weft and / or at least a part of the weft constituting the woven fabric is torn or peeled off.

Item 3. A process of tearing or peeling a part of the fibers constituting the base material, and the first tape base material 5 and the second tape base materials 4 and 4 ′. And laminating the adhesive layers 3 and 3 ′ and the release layers 2 and 2 ′ in this order,
Manufactured by a method comprising
Item 3. A corner tape according to item 2.

  Item 4. Item 4. The corner tape according to any one of Items 1 to 3, wherein the adhesion of the first tape substrate 5 is 1.5 N / 25 mm or more.

  Item 5. Laminating the first tape base material 5, the second tape base materials 4 and 4 ′, the adhesive layers 3 and 3 ′, and the release layers 2 and 2 ′ in this order; and The manufacturing method of the corner tape of any one of claim | item 1-4 including the process of carrying out the process which tears or peels one part of the fiber which comprises the said base material with respect to the 1st tape base material 5. .

  ADVANTAGE OF THE INVENTION According to this invention, the close contact with a putty and the biting of what is called a good also at the time of construction, ie, the corner tape with which putty fall-off was suppressed can be provided. The reason why the corner tape according to the present invention has the above effect is that the surface of the first tape substrate 5 is fluffed, the area in contact with the putty increases, and the fibers of the fluffed cloth It is possible to enter the putty and integrate it. In addition, when a woven fabric is used as a material constituting the first tape base material 5, an anchor effect in which putty enters a lattice-like gap formed by warp (warp yarn) and weft (weft) is also contributing. it is conceivable that.

It is the schematic which shows the structure of the corner tape of this invention. The top view of the corner tape of this invention is shown. The front view of the corner tape of this invention is shown. The front view of other embodiment of the corner tape of this invention is shown. It is the schematic which shows the structure of the 1st tape base material 5 of the corner tape in one Embodiment of this invention. It is the schematic which shows the structure of the 1st tape base material 5 of the corner tape in one Embodiment of this invention. It is the schematic which shows the structure of the 1st tape base material 5 of the corner tape in one Embodiment of this invention. The schematic of the construction model used for the construction example is shown. The photograph of the corner tape of Example 3-1 is shown.

Corner tape In the present invention, the first tape base material 5, the second tape base materials 4, 4 ′, the adhesive layers 3, 3 ′, and the release layers 2, 2 ′ are in this order. A laminated corner tape 1,
Said 2nd tape base materials 4 and 4 'are arrange | positioned in the substantially symmetrical position with respect to the virtual centerline 6 of the 1st tape base material 5, and at least one part of the surface of the 1st tape base material 5 is fluff. Standing, corner tape:
I will provide a.

  As shown in FIGS. 1 and 3, the corner tape 1 of the present invention includes a first tape base material 5, second tape base materials 4 and 4 ′, adhesive layers 3 and 3 ′, and a release layer. 2 and 2 ′ are stacked in this order. The first tape base 5 and the second tape base 4, 4 ′ may be integrated by fusion, thermocompression bonding, etc. As shown in FIG. Adhesive layers 7 and 7 'may be formed between the two tape substrates 4 and 4', respectively.

First tape base material 5 The first tape base material 5 used for the corner tape of the present invention is a flexible material, and the rigidity of the corner tape 1 is determined by the second tape base material 4. I'm in charge. And in this invention, the 1st tape base material 5 bears the adhesiveness of putty by the surface texture.

The material of the first tape base material 5 is not particularly limited as long as at least part of the material can be fluffed. For example, a nonwoven fabric, a woven fabric having warps and wefts, and a combination thereof. Examples thereof include a cloth and a laminated cloth obtained by laminating these cloths. In addition, the woven fabric in this invention can also be called a textile fabric. In the present invention, the cloth used for the first tape base material 5 is deformable and has good followability to the entrance and exit corners, and the shape when the curl is easily removed or folded in two is maintained. Those having good workability such as being able to be made are preferable. Although it does not specifically limit as preferable embodiment for having such followable | trackability, The following structures are mentioned:
-A single nonwoven fabric or a laminate of two or more nonwoven fabrics (that is, only a nonwoven fabric)
-A single woven fabric or a laminate of two or more types of woven fabrics (that is, only a woven fabric)
-A laminate of film and non-woven fabric or woven fabric. Each of the film and the nonwoven fabric or woven fabric may be a single layer, or two or more films / laminates may be laminated. When the film and the nonwoven fabric or woven fabric are laminated, the smooth film is on the side opposite to the putty, and the nonwoven fabric or woven fabric having irregularities due to fibers on the surface is on the putty side.

  Lamination of two or more films, nonwoven fabrics, and woven fabrics can be performed by pressure bonding, heat sealing, or the like.

  In the case of using a woven fabric obtained by spinning warp and warp yarns, in this specification, warp yarns are expressed as warp yarns and weft yarns are expressed as weft yarns based on the longitude and latitude of the earth. In this embodiment, warp yarns are arranged in a direction parallel to the longitudinal direction of the corner tape, and weft yarns are arranged in a direction perpendicular to the warp yarns.

  In the present invention, the adhesion of the putty is improved by using various processing methods so that the fibers of the cloth actively enter the putty. More specifically, as a method for improving adhesion, artificially tearing a part of the fabric fiber so that the fabric fiber enters the putty, and making the fiber fluff from the fabric surface like a beard Can be mentioned.

  As a means for tearing a part of the fiber, there is a means for tearing the projection by hooking the projection onto the fiber. Specific means include a method of rubbing a cloth such as a paper file, a mesh file, or a metal file, a notch knife, a sewing blade, a spring blade, a blade of a perforation knife, and a cloth harder than a cloth such as a baffle or wire brush. Examples thereof include a method of rubbing with a fiber and a method of using a tool in which a knurled cutting is sharpened to form a polygonal pyramid protrusion.

  From among these machining methods, it is appropriately selected in consideration of cost, machining efficiency, and tool life. It is preferable to use a paper file or a tool with a polygonal pyramid protrusion. When using a paper file, it is preferable to use a paper file of # 50 or more and # 1000 or less as defined in JIS R 6010. More preferably, they are # 60 or more and # 800 or less, More preferably, they are # 80 or more and # 400 or less.

  When a woven fabric is used as the first tape substrate 5, the strength of the corner tape in the longitudinal direction is important in order to maintain the strength of the corner tape as the tape. For this purpose, it is preferable to selectively process the wefts in order to perform the fluffing process without cutting the warp. In this embodiment, it is important that the direction of the blade or file and the direction of movement of the cloth be in a direction that does not tear the weft.

  FIG. 5 shows a schematic view when a woven fabric is used for the first tape base material 5 of the corner tape as one embodiment of the present invention. FIG. 5A shows the tape substrate 5 before processing. FIG. 5B shows the warp yarn 8 and the weft yarn 9 by dotted lines. And the figure which selectively processed the weft and torn this is shown to FIG. 5C.

  Moreover, as a process which makes the 1st tape base material 5 fluffy, the method of peeling at least one part of a fiber is also mentioned. FIG. 6 shows a schematic diagram in the case of using a woven fabric laminated on the first tape substrate 5 of the corner tape as another embodiment of the present invention. FIG. 6A shows the tape substrate 5 before processing. FIG. 6B shows the warp yarn 8 and the weft yarn 9 by dotted lines. FIG. 6B is a cross-sectional view taken along a plane perpendicular to the tape substrate 5 including the solid line 10 as FIG. 7A. The figure which peeled at least one part of the weft and the warp of the said tape base material 5 is shown as FIG. 7B. 6 and 7 show an embodiment in which the warp yarn 8 and the weft yarn 9 of the woven fabric are both peeled off, but only one of these yarns may be peeled off from the viewpoint of the strength of the tape substrate 5. It is preferable to peel the weft. 5 to 7, in order to particularly explain the structure of the tape base material 5, other members in the corner tape 1 (second tape base materials 4, 4 ′, adhesive layers 3, 3 ′, and separation tape) are shown. The description of the mold layers 2, 2 ′) is omitted.

  In the present invention, when a woven fabric is used for the tape base material 5, the wefts and warps of the tape base material 5 are densely woven. Therefore, an attempt to tear or peel at least a part of the wefts is not intended. It is possible that part of the rupture or tearing. Therefore, for the base material “at least part of the weft is torn” or the tape base material 5 “at least part of the weft is peeled”, at least part of the weft of the tape base 5 is torn or cut by processing. A part of meridian that has also been torn or peeled by the peeling process is included.

  Moreover, in this invention, when using a nonwoven fabric for the 1st tape base material 5, the process made fluffing by the method similar to the above can be performed. At that time, it is preferable to perform processing in a direction to maintain the strength as in the case of the woven fabric.

In the present invention, it is preferable that the first tape substrate 5 has an adhesive force to the putty of 1.5 N / 25 mm or more as a result of tearing or peeling at least a part of the fibers. In the present invention, the adhesion force refers to an adhesion force measured by a method described in a test example described later.
As a result of tearing or peeling at least a part of the fibers of the first tape base material 5, it is preferable that, on average, 5 to 200 fibers / cm 2 of fibers are fluffed by tearing or peeling.

  In the corner tape 1 of the present invention, the first tape base material 5 has flexibility and has followability to the shape of the corner. The first tape base material 5 is preferably capable of holding a crease when a crease is formed in a region A sandwiched between the second tape base materials 4 and 4 ′. For this reason, the corner tape 1 has a weight (repulsiveness) where the corner tape is wound around a paper core having an outer diameter of 6 inches at room temperature for two weeks, cut into a length of 30 cm, and the portion on which the weight is placed reaches the horizontal table. 50 g or less, preferably 40 g or less. If the weight (repulsiveness) is 50 g or less, particularly 40 g or less, a certain amount of warpage will occur when it is pulled out from the product roll, but the repulsive force is weak. Occurrence and rework is greatly reduced.

  The thickness of the 1st tape base material 5 is about 70-180 micrometers, for example, Preferably it is about 70-150 micrometers, More preferably, it is about 100-130 micrometers.

  In the present invention, when the first tape base material 5 has warp and weft and at least one of the warp and weft has a density of 35 yarns / 25 mm or less, the putty paste is improved, and It is preferable because it is easy to construct because putty is not easily peeled off. Further, the number of filaments per weft yarn is, for example, preferably 70 to 200, more preferably 100 to 170.

The 1st tape base material 5 has an unevenness | corrugation in the surface of the non-adhesion side, and, thereby, has putty retainability. However, since the unevenness on the non-adhesive side surface is fine, even when wallpaper, cloth, etc. are directly attached without applying putty, the unevenness is not reflected on the wallpaper, cloth. The non-adhesive side of the first tape substrate 5 is a material having fine irregularities such as a woven fabric, a nonwoven fabric, or paper, or can be given irregularities on the surface by embossing or the like. In the present invention, the first tape base material 5 does not have a through hole in which a putty enters and has an anchor function.
The fine irregularities on the outer surface of the first tape substrate 5 or the fine holes between the fibers in the woven or non-woven fabric can improve the adhesion to the putty, but the putty gets into the interior as it has an anchoring property. Since this is not the case, the amount of putty used can be reduced.

  Lamination of two or more films, nonwoven fabrics, and woven fabrics can be performed by pressure bonding, heat sealing, or the like.

  The unevenness of the non-adhesive part side surface of the first tape substrate 5, that is, the average surface roughness Ra is about 1 to 20 μm, preferably about 2 to 10 μm. The average surface roughness Ra can be measured according to the description of JIS B 0601.

  When the first tape substrate 5 is a film or a film laminate, examples of the material thereof include polyethylene, polypropylene, polyolefin resins such as ethylene-propylene copolymer, polyamide, etc., and the woven fabric includes polyester such as PET, Examples thereof include polyolefin resins such as polyethylene, polypropylene, and ethylene-propylene copolymers, polyamides such as nylon 6, nylon 6, and 6, woven fibers such as vinyl chloride, vinylon, rayon (including sufu), and acetate. As a nonwoven fabric, what is comprised by the synthetic material, paper pulp, or these 2 or more types of mixed raw materials, and joined the fiber without weaving is mentioned. Examples of the synthetic fiber include polyamide, polyvinyl alcohol fiber, polyester such as PET, acrylic such as polyacrylonitrile, polyolefin such as polyethylene and polypropylene, polyurethane, and polyvinyl chloride. It is preferable to use a weft of a shape-retaining resin as the fiber.

  When the 1st tape base material 5 contains a filler, it can suppress the return after making a crease or sticking to a corner part. Examples of such fillers include alumina, silica, titanium oxide, talc, clay, calcium carbonate, mica, silicates, carbonates, and glass fibers.

Second tape substrate 4, 4 '
In the corner tape of the present invention, the second tape base material 4, 4 ′ is arranged at a substantially symmetrical position with respect to the virtual center line 6 of the first tape base material 5, and the crease line is formed along the virtual center line 6. The second tape base material 4, 4 'is configured to maintain the strength of both sides of the corner tape when the is attached.

  The virtual center line 6 is a line along the longitudinal direction of the corner tape and connecting the width direction centers at both ends of the corner tape. The virtual center line 6 is included in a region A sandwiched between the second tape base materials 4 and 4 ′.

  Examples of the material of the second tape substrate 4 or 4 'include polyesters such as polyethylene terephthalate (PET) and polybutylene terephthalate, polymethyl methacrylate (PMMA), polycarbonate, polystyrene, polyacetate, polyvinyl chloride, Examples thereof include polyethylene, polypropylene, polyvinyl butyral, and polyurethane, and polyester such as PET having a relatively high tensile elastic modulus is preferable.

  The thickness of the second tape base material 4, 4 ′ is, for example, 30 μm to 500 μm, preferably 50 to 300 μm, more preferably 75 to 150 μm.

  By making the thickness of the second tape base 4 and 4 'within the above range, the corner tape is self-supporting without dripping drastically during construction, so the workability is good and the corner tape is manufactured with a scroll. Sometimes tunneling is less likely to occur, and as a result, it is preferable because defects that cause dust to adhere to the location and a decrease in adhesive strength are suppressed.

  Although the width | variety of the 2nd tape base material 4 is not specifically limited, For example, about 5 mm-100 mm are preferable.

  The width of the region A sandwiched between the second tape base materials 4 and 4 ′ is preferably about 0.5 to 3 mm because the corner linearity is good, although it depends on the size of the corner tape. The width of the corner tape is not particularly limited, but the width of each of the second tape base materials 4 and 4 ′ is about 10 to 30 mm, but is not limited thereto.

  In the corner tape of the present invention, the ratio between the thickness of the first tape base and the width of the region A sandwiched between the second tape bases 4 and 4 ′ is not particularly limited. Material thickness: Region A = 1: 3 to 1:30, preferably 1: 8 to 1:20. When the ratio is within these ranges, when a crease is made in the center of a long corner tape and it stands upright, the bending of the tip or the opening of the crease is reduced, the corner edge becomes sharp, and workability and appearance finish are improved. improves.

  The ratio of the width of the area A sandwiched between the total thickness of the corner tape and the second tape base material 4, 4 ′ is not particularly limited. For example, the total thickness of the tape: area A = 1: 2 to 1. : 30, preferably 1: 6 to 1:20. When the ratio is within these ranges, the corner edge becomes sharp and workability and appearance finish are improved. In particular, when corner tape is affixed to a corner of a building or the like, the corner edge becomes sharp and the appearance finish is improved.

Adhesive layer 3, 3 '
The corner tape of this invention adheres to a target object by the adhesion layers 3 and 3 '.

  The pressure-sensitive adhesive used in the pressure-sensitive adhesive layer 3 is not particularly limited as long as the pressure-sensitive adhesive force satisfies the above-described relationship with the second tape base material 4. For example, acrylic pressure-sensitive adhesive, silicone System adhesives and rubber adhesives, and acrylic adhesives are preferred. Although the thickness of an adhesion layer is not specifically limited, 10-300 micrometers, Preferably it can illustrate 30-100 micrometers.

  If the front and back surfaces of the pressure-sensitive adhesive layers 7, 7 'and 3, 3' are expressed as the cross base material side, it is desirable that the front and back surfaces have the same adhesive strength or lower surface adhesive strength than the back surface. If the adhesive strength is the same on the front and back or the adhesive strength on the front is lower than that on the back, when the corner tape is applied to the gypsum board, it will peel off with the double-sided tape if it is re-stretched to correct the misalignment. This is because the corner member can be reused. In addition, by suppressing the adhesive force on the surface, it is possible to prevent cornering when the paper is applied to a gypsum board surface and re-stretched, and the corner tape can be reused from this point.

Release layer 2, 2 '
The release layers 2 and 2 'are not particularly limited. For example, a laminate obtained by laminating a polyolefin resin on high-quality paper, a laminate obtained by laminating a silicone release agent on kraft paper, and the like are preferably used. Although the thickness of the mold release layer 2 is not specifically limited, About 10 micrometers-500 micrometers can be illustrated.

  The total thickness of the corner tape other than the release layers 2 and 2 ′ is, for example, about 200 to 400 μm, preferably about 250 to 350 μm.

  Here, the total thickness of the corner tape other than the release layers 2 and 2 ′ is the sum of the first tape base material 5, the second tape base material 4, and the adhesive layer 3 in the case of the configuration of FIG. In the case of the configuration shown in FIG. 4, the total thickness of the first tape base material 5, the adhesive layer 7, the second tape base material 4, and the adhesive layer 3.

Method for producing corner tape The present invention comprises a first tape base material 5, a second tape base material 4, 4 ', an adhesive layer 3, 3', and a release layer 2, 2 'in this order. A step of laminating the first tape base material 5 and a process of tearing or peeling a part of the fibers constituting the base material,
A method for manufacturing the corner tape is provided.

About the method and conditions for performing each of these processes, it can set suitably according to a publicly known method. In addition, the method of the present invention includes
First, the first tape base material 5 is subjected to a process of tearing or peeling a part of the fibers constituting the base material, and the first tape base material 5 subjected to the above treatment and the second Not only the method of performing the process of laminating the tape base materials 4 and 4 ′, the adhesive layers 3 and 3 ′, and the release layers 2 and 2 ′ in this order,
First, a step of laminating the first tape base material 5, the second tape base materials 4 and 4 ′, the adhesive layers 3 and 3 ′, and the release layers 2 and 2 ′ in this order is performed. And the method of performing the process of carrying out the process which tears or peels one part of the fiber which comprises the said base material with respect to the 1st tape base material 5 in the state next is also included.

  Moreover, in the method of this invention, each layer should just be finally laminated | stacked in said order, and the order of each process of laminating | stacking a base material, an adhesion layer, and a mold release layer is not ask | required. For example, the method of the present invention includes a first tape substrate 5, an adhesive layer 7, 7 ′ (if necessary), a second tape substrate 4, 4 ′, and an adhesive layer 3, 3 ′. In addition to the method of laminating the release layers 2 and 2 ′ in this order, first, the adhesive layers 7 and 7 ′ (if necessary), the second tape base material 4 and 4 ′, and the adhesive layer 3 , 3 'and release layers 2, 2' are laminated, and when the second tape base material 4, 4 'or adhesive layers 7, 7' of the laminate is inserted, the adhesive layers 7, 7 A method of laminating the first tape substrate 5 is also included.

  Hereinafter, the present invention will be described using specific embodiments described in Examples and Comparative Examples, but the present invention is not limited to these specific embodiments.

Example 1
As the fabric before processing, a woven fabric of PET filaments having the warp and weft yarn fineness and yarn density shown in Table 1 was used.

  A paper file # 240 is attached to the surface of a rubber roller with a weight of 2 KG and a diameter of 80 mm using a double-sided tape, and the surface of the woven fabric is horizontally moved once at a speed of 5 m / min in a direction perpendicular to the weft. I made it fluffy.

Example 2
Paper file # 40 was affixed to a metal stand with double-sided tape, and moved to the cloth used as a raw material in Example 1 in contact with the paper file # 40 at a speed of 5 m / min in a direction perpendicular to the weft. Otherwise, the surface of the woven fabric was fluffed in the same manner as in Example 1.

Examples 3-1 and 3-2
Instead of the paper file of Example 2, a plurality of steel square pyramids (bottom side short side 0.4 mm, long side 0.6 mm, height 0.5 mm) are arranged at a pitch interval of 2.4 mm in the short side axis direction. The surface of the woven fabric was fluffed in the same manner as in Example 2 except that fuzzing jigs arranged in a row and 1.2 mm in the short side axis direction and 2 mm in pitch in the long side direction were used. Let

Comparative Example 1
As an example in which fuzzing was not performed, a cloth with a changed filament shape of a yarn was used, and the adhesion with a putty was measured by the above evaluation method.

Comparative Example 2
As an example represented by a conventional invention, a DX cross corner tape (width 53 mm) manufactured by Otsuka Brush Manufacturing Co., Ltd. was used in half. The same procedure as in Comparative Example 1 was performed except that the adhesion force per 25 mm width was calculated.

Test Example The evaluation of the adhesion between the base material cloth and the putty was carried out by the following method.

  Putty: As the putty, a tigerken coat manufactured by Yoshino Gypsum Co., Ltd. was used. Tiger Kencoat 1KG was added with 0.6KG water and stirred well until uniform.

  Specimen preparation method: The putty was coated on a stainless steel plate having a thickness of 1 mm, a width of 50 mm, and a length of 125 mm, and various cloths having a width of 25 mm and a length of 200 mm were placed on the putty and pressure-bonded with a spatula. The product was placed in a constant temperature bath at 40 ° C. and dried and cured for 48 hours.

  Test method: As a putty adhesion test, a 90 ° peel test was conducted by using a tensile tester to pull up the end of the cloth of the test specimen. The pulling speed was 300 mm / min. Table 1 shows the details of the cloths used in the comparative examples and Examples 1 to 3, and the results of putty adhesion.

  From the above results, it has been clarified that when the processing method according to the present invention is applied to the cloth as the base material, the adhesion with the putty is increased.

Construction Example A corner tape was prepared using the cloth of Example 3-1 as the tape base material 5.

  More specifically, an acrylic pressure-sensitive adhesive was applied to both surfaces of the second tape base material: polyester film (tensile elastic modulus 3000 MPa, thickness 100 μm double-sided corona-treated product). The obtained double-sided tape was cut to obtain a double-sided tape having a width of 19 mm. A 19 mm double-sided tape was affixed to the cloth of Example 3-1 in parallel with a 1 mm gap at the center to produce a corner tape. A photograph of the surface of the tape base material 5 of the corner tape of Example 3-1 is shown in FIG.

  Using the obtained corner tape and a commercially available corner tape (DX cross corner tape manufactured by Otsuka Flocking Co., Ltd.), using a construction model with a corner with a height of 2.4M, the amount of putty required for construction and drying Time evaluation was performed. The dimensions of the construction model used in the construction example are shown in FIG. The evaluation results are shown in Table 2.

From the above results, it can be seen that the corner tape of Example 3-1 according to the present invention can reduce the amount of putty used for putty finishing by about 60% and can also reduce the drying and curing time by about 30% compared to the corner tape of Comparative Example 4.
From the above results, the corner tape obtained according to the present invention can be putty-finished with a very small amount of putty and can be dried and cured in a short time, so that the waiting time for the next process is shortened.

  DESCRIPTION OF SYMBOLS 1 Corner tape; 2, 2 'release layer; 3, 3' adhesion layer; 4, 4 '2nd tape base material; 5 1st tape base material; 6 Virtual center line of 1st tape base material 5 7, 7 'adhesive layer; 8 warp; 9 weft

Claims (4)

A corner tape 1 in which a first tape base material 5, a second tape base material 4, 4 ′, an adhesive layer 3, 3 ′, and a release layer 2, 2 ′ are laminated in this order,
Said 2nd tape base materials 4 and 4 'are arrange | positioned in the substantially symmetrical position with respect to the virtual centerline 6 of the 1st tape base material 5, and at least one part of the surface of the 1st tape base material 5 is fluff. A corner tape that is erected and in which a part of the cross section of the fiber constituting the first tape substrate 5 is torn or peeled off . The first tape base material 5 is a nonwoven fabric, a woven fabric having warps and wefts, and a fabric selected from a combination thereof, or a laminated fabric obtained by laminating the fabric, and the fibers constituting the nonwoven fabric The corner tape according to claim 1, wherein a part of the cross section and / or a part of the cross section of the weft constituting the woven fabric are torn or peeled off. The corner tape according to claim 1 or 2 whose adhesion power to the putty of the first tape base material 5 is 1.5 N / 25 mm or more. Laminating the first tape base material 5, the second tape base materials 4, 4 ′, the adhesive layers 3, 3 ′, and the release layers 2, 2 ′ in this order; A process of tearing or peeling a part of the cross section of the fiber constituting the base material for one tape base material 5;
The manufacturing method of the corner tape of any one of Claims 1-3 containing this.