JP2016008407A - Corner tape - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a corner tape which is stuck on an internal corner part at various angles to reinforce it and which can hardly be cut in mate cutting.SOLUTION: In a corner tape, a first tape base material 5, a second tape base material 4, an adhesive layer 3, and a release layer 2 are stacked in this order. A perforated cut is applied to the second tape base material 4.

Description

  The present invention relates to a corner tape, and more particularly to a corner tape that is used by being attached to a corner of an inner wall.

  The corner tape is a tape that is attached to the inner corner portion and the outer corner portion (corner portion) of the inner wall in order to reinforce the corner portion. The corner tape to be attached to the inner corner of the inner wall is pre-molded according to the angle of the inner corner of the inner wall (Fig. 1), and the periphery to make it easier to bend around the center of the tape shape. There is a tape product (Fig. 2) with a thinner wall thickness. Moreover, what made the soft material structure only in the bending part is also known (patent document 1).

  Here, when wallpaper is used for finishing the corner of the inner wall, two wallpapers may be pasted so as to touch each other at the corner. In this case, so-called overlap cutting is usually performed in which two sheets of wallpaper are overlapped in the vicinity of the corner and cut in that state so that there is no gap between the two wallpapers at the corner (FIG. 3). ). At that time, the two pieces of wallpaper are cut with a blade, but since the corner tape is covered with the wallpaper and cannot be visually observed, when the force is applied too much, the cutting edge enters the corner tape, and the corner is reinforced. For this reason, the corner tape that was put in there was sometimes cut.

  Here, although the mold as shown in FIG. 1 is thick, it is difficult to cut, but since it is a regular mold, it cannot be used when the angle of the corner of the interior base is not a right angle. In addition, the tape-shaped product whose thickness is reduced along the line near the center of the tape shape as shown in FIG. 2 can be freely angled even when the corner is not perpendicular, but the thickness of the bent portion is Since it is thin, it is easy to be cut at the time of the above-described overcutting. Further, if the thickness of the bent portion is increased so that it is difficult to be cut, the bendability is lowered.

JP2012-246672

  An object of the present invention is to provide a corner tape that can be reinforced by being attached to corners of various angles, and that is difficult to cut during the above-mentioned close cutting.

  Under such circumstances, the present inventors have intensively studied and, as a result, prepared the strength, thickness, etc. of the bent portion of the corner tape to prevent the tape from being cut when overlaid. When we arrived, we focused on the method of preventing cutting by recognizing it and preventing the blade edge from being pushed forward any further. Under the new idea, as a result of various studies on the shape of the bent portion, the present invention has been completed.

  Accordingly, the present invention provides the following items.

  Item 1. A corner tape in which a first tape base material 5, a second tape base material 4, an adhesive layer 3, and a release layer 2 are laminated in this order, and the second tape base material is perforated. Corner tape made of cuts.

  Item 2. Item 2. The corner tape according to Item 1, wherein at least a part of the surface of the first tape substrate 5 is fluffed.

  Since the corner tape of the present invention has a perforation-like cut in the second tape substrate, it can be used by being bent according to the angle of the corner. In addition, since the corner tape of the present invention has a perforated cut in the second tape base material, when the edge of the cutter reaches the corner tape due to unevenness caused by the perforated cut when cutting the friend, The operator can recognize it and prevent the corner tape from being cut.

The conventional corner tape previously shape | molded according to the angle of the entrance corner part of an inner wall is shown. A conventional corner tape having a thickness thinner than that of the periphery in order to facilitate bending at a position near the center of the tape shape is shown. An outline of the stacking is shown. Sectional drawing and the top view of the 1st tape base material and 2nd tape base material part in 1 embodiment of the corner tape of this invention are shown. Sectional drawing in one 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.

Corner tape The present invention is a corner tape in which a first tape base material 5, a second tape base material 4, an adhesive layer 3, and a release layer 2 are laminated in this order. A corner tape is provided in which a base material is perforated.

  In the corner tape 1 of the present invention, as shown in FIG. 5, the first tape base material 5, the second tape base material 4, the adhesive layer 3, and the release layer 2 are in this order. Is laminated. The first tape substrate 5 and the second tape substrate 4 may be integrated by fusion, thermocompression bonding, etc., and between the first tape substrate 5 and the second tape substrate 4, The adhesive layer 7 may be formed.

First tape substrate 5
The first tape base material 5 used for the corner tape of the present invention is a flexible material, and the second tape base material 4 plays the main role in the rigidity of the corner tape 1.

The material of the first tape base material 5 is not particularly limited. For example, a nonwoven fabric, a woven fabric having warps and wefts, a combination of these, a laminated fabric obtained by laminating these fabrics, and the like Can be mentioned. 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.

  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.

  The corner tape of the present invention is characterized in that at least the second tape substrate 4 is perforated. Accordingly, the first tape base material 5 that is not perforated may be included in the present invention. However, in the present invention, not only the second tape base material 4 but also the first tape base material 5 is included. The material 5 may also be perforated.

  In the present invention, at least a part of the surface of the first tape substrate 5 may be fluffed to improve the putty adhesion. In the present embodiment, specifically, 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. 6 shows a schematic diagram when a woven fabric is used for the first tape substrate 5 of the corner tape as one 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. And the figure which selectively processed the weft and torn this is shown to FIG. 6C.

  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. 7 shows a schematic diagram in the case of using a woven fabric laminated on the first tape base material 5 of the corner tape as another embodiment of the present invention. FIG. 7A shows the tape substrate 5 before processing. FIG. 7B shows the warp yarn 8 and the weft yarn 9 by dotted lines. And FIG. 8A shows a cross-sectional view of FIG. 7B cut along a plane including the solid line 10 and perpendicular to the tape base material 5. 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. 8B. 7 and 8 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 base 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 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.

  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
The corner tape of the present invention is characterized in that the second tape substrate 4 is perforated. The method of processing the perforated cut is not limited, but can be processed with a blade such as a Thomson blade, a pinnacle blade, or a die roll.

  In the present invention, the thickness of the second tape substrate 4 is desirably 100 to 500 μm, and more preferably 188 to 350 μm. By setting the thickness of the second tape base material 4 within the above range, a feeling when the perforation is traced by the blade is easily transmitted to the operator, and it becomes easy to obtain cut resistance.

  Moreover, it is preferable that the ratio between the portion cut out by the perforation and the portion to be left is set within a certain range. Specifically, for example, the pitch of the perforation (ratio of the longitudinal length of the cut-out portion and the longitudinal length of the remaining portion) is preferably 1: 1 to 1: 5, and is preferably 1: 2 to 1: 4. More preferably. By setting it within the above range, it is possible to prevent the cut-out portion from being connected and cut when the blade is traced, and it is easy to bend, and the operator feels when the blade traces the perforation. It is preferable because it is easy.

  Although the position of the perforation is not particularly limited, for example, it is applied near the center line of the corner tape. Here, the center line of the corner tape means a line along the longitudinal direction of the corner tape and connecting the width direction centers of both ends of the corner tape.

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

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

Adhesive layer 3
The corner tape of the present invention is attached to the object by the adhesive layer 3.

  Although it does not specifically limit as an adhesive used for the adhesion layer 3, For example, an acrylic adhesive, a silicone adhesive, and a rubber adhesive are mentioned, An acrylic adhesive is preferable. Although the thickness of an adhesion layer is not specifically limited, 10-300 micrometers, Preferably it can illustrate 30-100 micrometers.

  When the adhesive layer 7 is laminated between the first tape base material 5 and the second tape base material 4, the front and back surfaces of the adhesive surface of the adhesive layer 7 and the adhesive layer 3 are expressed with the cross base material side as the back surface. Then, it is desirable that the adhesive strength on the front and back sides is equal or the adhesive strength on the front surface is lower than that on 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
The release layer 2 is not particularly limited. For example, a laminate obtained by laminating a polyolefin resin on fine 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 layer 2 is, for example, about 200 to 600 μm, preferably about 250 to 500 μm.

  Here, the total thickness of the corner tape other than the release layer 2 is, for example, the total thickness 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. 5. Yes, in the case where the adhesive layer 7 is present, the total thickness is obtained by adding a portion corresponding to the adhesive layer 7 in addition to the above thickness.

The manufacturing method of a corner tape This invention includes the process of laminating | stacking the 1st tape base material 5, the 2nd tape base material 4, the adhesion layer 3, and the mold release layer 2 in this order, 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 the present invention, the second tape base material 4 that has been perforated in advance may be subjected to the lamination step, and at least during the lamination step, a perforation is formed on the second tape base material 4. As may be done, it may be processed. For example, after laminating the first tape base material 5, the second tape base material 4, the adhesive layer 3, and the release layer 2 in this order, a perforation may be formed. In this case, even if the first tape base material 5, the second tape base material 4, the adhesive layer 3, and the release layer 2 are all perforated, the first tape base material 5, Even if the perforation is applied only to the second tape base 4, the second tape base 5, the second tape base 4, and the adhesive layer 3 may be perforated. The material 4, the adhesive layer 3, and the release layer 2 may be perforated. Further, for example, even when the second tape substrate 4, the adhesive layer 3, and the release layer 2 are laminated, only the second tape substrate 4 is perforated, the second tape substrate 4 The material 4 and the adhesive layer 3 may be perforated.

  Further, in the above-described preferred embodiment, when producing a corner tape in which at least a part of the surface of the first tape base material 5 is fluffed, the above method is applied to the first tape base material 5. Provided is a method for producing the corner tape, further comprising a step of tearing or peeling a part of the fibers constituting the substrate.

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 material 4, the adhesive layer 3 and the release layer 2 in this order,
First, the first tape base material 5, the second tape base material 4, the adhesive layer 3, and the release layer 2 are laminated in this order, and then the first tape base material 5, A method of performing a process of tearing or peeling a part of the fibers constituting the base material on the tape base material 5 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, in the method of the present invention, the first tape base material 5, the adhesive layer 7 (if necessary), the second tape base material 4, the adhesive layer 3, and the release layer 2 are combined with this. Not only the method of laminating in order, but first the pressure-sensitive adhesive layer 7 (if necessary), the second tape substrate 4, the pressure-sensitive adhesive layer 3, and the release layer 2 are laminated, When the tape base material 4 or the adhesive layer 7 is inserted, a method of laminating the first tape base material 5 on the adhesive layer 7 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.

  A polyethylene terephthalate film with a thickness of 250 μm is used as the second tape base material, and the adhesive layer is made of isocyanate (Nippon Polyurethane L45E) as the cross-linking agent for 100 parts by weight of acrylic adhesive (Nippon Catalyst AST-8550E). 2 parts by weight on the side and 1 part by weight on the adhesive layer 7 side were applied, each layer thickness was 30 μm, the release layer 2 was laminated on the adhesive layer 3 side, and a roll of double-sided tape was obtained. A method for obtaining this laminate is based on a normal method for producing a double-sided tape.

  The first tape substrate 5 was obtained by laminating 80 μm of polyethylene resin on a woven fabric made of polyester resin fibers by an extrusion laminating method to obtain the first tape substrate 5.

  The double-sided tape and the first tape base material 5 were laminated with a pressure roll, and a perforation was processed with a Thomson sewing blade at the center position in the width direction of the laminate. The blade length of the cutout portion was 1 mm, and the ratio of the perforated cutout portion and the remaining portion was changed.

  As evaluation items, cutting resistance, ease of bending, and crease shape memory were evaluated.

  Cutting resistance is made by making a corner model with plasterboard, pasting the above sample, overlaying two wallpaper on the corner, cutting the two walls with a cutter knife, ◎ if not separated, ○ if partially cut, × if completely separated.

  The ease of bending was evaluated as ◎ when it was bent with a light force, ○ when it was bent with an unreasonable force, and × when it could not be bent at the target position.

  The understanding of the sensation of the blade edge to the operator was ◎ if it was well understood, ○ if it was understood, and × if it was not understood.

Claims (2)

A corner tape in which a first tape base material 5, a second tape base material 4, an adhesive layer 3, and a release layer 2 are laminated in this order, and the second tape base material is perforated. Corner tape made of cuts. The corner tape according to claim 1, wherein at least a part of the surface of the first tape base material 5 is fluffed.