JP2009249845A - Joint tape for flooring and antifouling construction method for flooring joint - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of maintaining the aesthetic appearance of a joint section between P-tiles over a long period by making inconspicuous the joint section and preventing the joint section from being contaminated without requiring a treatment after the construction such as coating of wax and the subsequent treatments. <P>SOLUTION: This joint tape for flooring includes a hard coat layer on one surface of a base film layer and a hot-melt layer of a hot-melt adhesive agent on the other surface. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a floor joint tape used for floor surfaces of P-tiles, ceramic tiles, and the like, which prevents soiling of joint portions of flooring materials, and a floor joint antifouling method using such a floor joint tape. About.

  Tile floors made of P-tile (resin tiles) on the bottom of concrete floors are beautiful and easy to clean, so they are widely used in offices, public facilities, stores, restaurants, etc. ing.

  P-tiles are generally relatively small, such as 30 cm square, and a plurality of P-tiles are basically installed without gaps.

  Here, the P-tile is made of a relatively soft resin such as a vinyl chloride resin or an olefin resin, but as a result of use, a fine flaw is generated on the surface, and a dirt component adheres to the flaw, so that it looks dirty. For this reason, a process of hiding fine scratches is performed by wax coating. In this case, pre-processing and post-processing associated with the coating process are required, which takes time and increases labor costs. In addition, there are various problems such as the need to prohibit traffic during these processes.

  For this reason, for example, a floor protective sheet made of a hard sheet (generally having a thickness of about 150 μm) having an adhesive layer formed on one side is bonded to a floor on which a P-tile is constructed. A technique for protecting the image has been proposed (Patent Document 1). According to this technique, the aesthetic appearance was maintained and the entry of the dirt component into the slight gap between the P-tiles was prevented, which was considered to be extremely effective.

  However, when the floor protection sheet was actually used, it was found that there still remained a big problem.

  That is, the floor protection sheet is partially overlapped so that no gap is generated. A person walks to the end portion, and a cart passes through, but as a result, the adhesive 12 oozes out from the end portion of the upper floor protective sheet 11a superimposed as shown in a model in FIG. It has been found that dirt components adhere to the adhesive 12 and the aesthetic appearance is remarkably impaired.

  On the other hand, the present inventors examined a method in which after the construction of the floor protection sheet, the adhesive adhesive exudation prevention treatment is performed by the instantaneous adhesive 16 on the end portion of the upper floor protection sheet 11a that is overlaid. Went.

  According to this method, since the adhesive does not ooze out from the end portion of the overlying upper floor protective sheet 11a, it seemed to solve the above problem, but it is actually used and viewed. As a result, cracking occurred in the instantaneous adhesive after curing, and the exudation of the pressure-sensitive adhesive could not be prevented. As a result, the soil component adhered to the exuded pressure-sensitive adhesive. This was thought to be due to the fact that the instantaneous adhesive after curing of the bonded portion was broken by the force applied over time when it was stepped on with a foot or the like.

  Further, in the case of a technique in which the floor protection sheet is partially overlapped for construction, the overlapping portion has two adhesive layers, but the adhesive is yellowed over time. For this reason, it was found that after a while after the construction, the overlapped portion appears darker than the other portions, resulting in a remarkable loss of aesthetics.

Thus, there has been a demand for a solution that eliminates the need for post-construction treatment such as wax coating and treatment accompanying it, is resistant to contamination, and maintains aesthetics over a long period of time.
Japanese Patent Application No. 2007-85114

  The present invention solves the above-mentioned conventional problems, i.e., a solution that does not require a post-construction process such as wax coating or a process associated therewith, is resistant to contamination, and maintains its beauty over a long period of time. The purpose is to provide.

  In order to solve the above problems, the floor joint tape of the present invention is a hot melt comprising a base film layer comprising a hard coat layer on one surface and a hot melt adhesive on the other surface as described in claim 1. A floor joint tape comprising layers, respectively.

  Moreover, the floor joint tape of this invention is the floor joint tape of Claim 1 as described in Claim 2, The said hot-melt-adhesive contains a tackifier.

  The floor joint tape of the present invention is the floor joint tape according to claim 1 or 2, wherein the center or the vicinity of the center of the hot melt layer tape is the periphery thereof. It is characterized by being thicker than

  Moreover, the floor joint tape of this invention is the floor joint tape of any one of Claim 1 thru | or 3 as described in Claim 4, The thickness of the said hard-coat layer is 5 micrometers or more. It is 10 μm or less.

  Moreover, the floor joint tape of the present invention is the floor joint tape according to any one of claims 1 to 4, wherein at least a part of the surface of the hot melt layer is provided. Is a rough surface.

  The floor joint antifouling construction method of the present invention is a floor joint soiling construction method using the floor joint tape according to any one of claims 1 to 5.

  According to the floor joint tape of the present invention, the base film layer is provided with a hard coat layer on one side and a hot melt layer made of a hot melt adhesive on the other side. As a result, it is not noticeable because it does not get dirty, and as it does not use an adhesive, it does not bleed out and does not cause dust adhesion due to adhesive leaching. Therefore, peeling does not occur in a normal environment, and in the case of re-construction, it can be easily peeled off by reheating, and it is possible to effectively prevent floor joints such as P-tiles from being soiled. Furthermore, since no adhesive is used, yellowing does not occur even after a long period of time after construction, so there is no partial discomfort.

  Further, when the hot melt adhesive is a hot melt adhesive containing a tackifier, the adhesion to a hard protective film (mainly acrylic resin) on the surface of the P-tile is improved. Therefore, durability is further improved.

  Further, when the center or the vicinity of the center of the hot melt layer is thicker than the periphery thereof, even when there is a gap in the joint of the P-tile, the gap portion of the tape is less likely to warp even after aging. For this reason, even when light is reflected on the floor surface, the tape portion is less noticeable and the aesthetic appearance is not impaired.

  Furthermore, when the thickness of the hard coat layer is 5 μm or more and 10 μm or less, durability is improved.

  Furthermore, if at least a part of the surface of the hot melt layer is rough, release properties are imparted even when a wound tape is used, so that release paper is not required and handling is improved. In addition, the cost can be reduced.

  According to the floor joint antifouling construction method of the present invention, since any one of the above floor joint tapes is used, as a result, it is not noticeable because it is not soiled, and since it does not use an adhesive, its leaching, In addition, no dust adheres due to adhesive leaching, and it does not peel off unless it receives heat, so it does not peel off under normal conditions. Since it can be peeled off, it is possible to effectively prevent floor joints such as P-tiles from being stained.

  As described above, the floor joint tape of the present invention is a floor joint tape provided with a hard coat layer on one side of the base film layer and a hot melt layer made of a hot melt adhesive on the other side, respectively. is there.

  In the floor joint tape of the present invention, the tape width can be appropriately determined. However, except for special cases, it is usually preferably 5 mm or more and 30 mm or less in view of its purpose and handleability.

  The base film is preferably colorless and transparent unless a special effect is required.

  The resin constituting the base film can be appropriately selected in consideration of winding properties as a tape, thin film forming properties, workability, etc., but is made of a polyester resin in terms of transparency, shrinkage resistance, heat resistance, etc. Among them, polyethylene terephthalate is more preferable because it is inexpensive and easily available.

  The thickness of the base film is preferably 25 μm or more and 150 μm or less, more preferably considering the winding property as a tape, workability, difficulty of conspicuousness as a floor joint tape after construction, strength after construction, and the like. The range is 30 μm or more and 80 μm or less.

  The hard coat layer is for imparting abrasion resistance, planar smoothness, glossiness, and scratch resistance to the surface side of the floor joint tape. Therefore, the hard coat layer is more than the base film constituting the base film layer. It must be hard. The hard coat layer is preferably colorless and transparent unless a special effect is required.

  Furthermore, as such a hard-coat layer, it is preferable that pencil hardness is H or more, and it is more preferable that it is 2H or more.

  The thickness of the hard coat layer is preferably 5 μm or more and 10 μm or less. If it is less than 5 μm, the effect as a hard coat layer may be reduced. On the other hand, if it exceeds 10 μm, the hard coat layer may be cracked when wound up as a floor joint tape or over time after construction.

  Here, as the resin composition for forming the hard coat layer, if it is a photo-curable type, the resin composition can be quickly and easily cured after applying the required thickness on the surface (one side) of the base film layer. The hard coat layer can be easily formed. Such a photocurable hard coat layer resin is commercially available from Nippon Kayaku Co., Ltd., Arakawa Chemical Co., Ltd., Nippon Synthetic Chemical Industry Co., Ltd., and the like.

  In the present invention, in order to improve the adhesion between the hot melt layer and the base film layer, the hot melt layer is formed on the hot melt layer forming surface of the base film by applying a primer treatment with an appropriately selected primer agent. May be.

  The hot melt layer is formed from a hot melt adhesive having adhesiveness by heating.

  As the hot melt adhesive, polyester-based, modified olefin-based, reactive urethane-based, EVA (ethylene-vinyl acetate copolymer) -based adhesives, and the like are commercially available.

  Here, a hot-melt adhesive containing a tackifier, in which a tackifier is added to such a hot-melt adhesive main agent, a hard protective film on the surface of the P-tile (acrylic resin is mainly used) This is preferable because the durability is further improved. Examples of such tackifiers include Hirodine 7589 (manufactured by Yasuhara Chemical Co., Ltd.), ester gum H (manufactured by Arakawa Chemical Co., Ltd.), YS Polystar T (manufactured by Yasuhara Chemical Co., Ltd.), and the like.

  The addition amount of the tackifier with respect to the entire hot melt adhesive is preferably in the range of 5% by weight to 50% by weight. That is, if it is less than 5% by weight, the effect of adding a tackifier is difficult to obtain, and if it exceeds 50% by weight, sufficient adhesiveness as a hot melt adhesive is difficult to obtain.

  The thickness of the hot melt layer is preferably 10 μm or more and 100 μm or less. If it is less than 10 μm, the adhesive strength is lowered, and there is a possibility that a problem occurs in durability after construction. If it exceeds 100 μm, it is difficult to obtain an improvement in adhesive strength accompanying an increase in the amount of hot melt adhesive used, and the cost increases.

  Such a hot melt layer can be formed on the base film by, for example, extrusion lamination. By using a pear roller in combination with the hot melt layer at the time of formation, the hot melt layer surface can be made pear (roughened), and thus the hot melt layer having at least a part of the surface roughened. In this case, even when a wound tape is used, release properties are imparted between the layers, so that release paper is not required, cost reduction is possible, handling properties are improved, and blocking (tape of tape) The occurrence of rewinding becomes impossible) is prevented.

  In the present invention, in order to improve the adhesion between the base film layer and the hot melt layer, the hot melt layer is formed on the hot melt layer forming surface of the base film after applying a primer treatment with an appropriately selected primer agent. May be.

  The floor joint antifouling construction using the floor joint tape thus obtained can be performed, for example, as follows.

A floor protective sheet (for example, one described in Patent Document 1) having an adhesive layer formed on one side is bonded to a floor surface formed of P-tile or the like.
At this time, the protective sheets for flooring are constructed so that the ends are brought into contact with each other without overlapping, and a gap is not generated as much as possible.

  Then, the floor joint tape according to the present invention cut to an appropriate length is applied onto the joint portion composed of these protective sheets for floor so that the hot melt layer is below. At this time, the joint tape for floors may be temporarily fixed to the floor using a separate adhesive tape or the like. Next, the floor joint tape is heated by a heating means such as a hair dryer or a similar hot air machine to a temperature at which the hot melt adhesive of the hot melt layer exhibits adhesiveness, and then pressed by a roller or the like. Construction can be easily performed by pressing the joint tape for floor against the floor by means.

  In addition to the heating means and the pressure welding means, a heating pressure welding means that can simultaneously perform heating and pressure welding such as an iron or a heatable roller may be used.

  When the floor joint tape is peeled off for the purpose of exchanging the floor joint tape, the floor joint tape can be easily peeled off from the floor material by heating.

  FIG. 1 shows a model cross-sectional view of an example A of a floor joint tape of the present invention.

  The base film layer 1 is a floor joint tape provided with a hard coat layer 2 on one side and a hot melt layer 4 made of a hot melt adhesive on the other side.

  Reference numeral 3 in the figure denotes a primer treatment layer by a primer treatment performed for improving the adhesiveness of the hot melt layer 4 to the base film layer 1. The surface of the hot melt layer 4 is roughened as shown in the partial enlarged model sectional view in the figure.

  FIG. 2 is a model cross-sectional view showing a state where floor joints are subjected to antifouling construction using floor joint tape A. Reference numeral 11 in the figure denotes a P-tile with a protective film, which is composed of a P-tile 11b and a protective film layer 11a (floor protective sheet) fixed to the P-tile 11b via an adhesive layer (not shown). Reference numeral 14 denotes a joint gap, and reference numeral 12 denotes a floor (concrete floor).

  When the floor joint tape A as described above is used and there is a joint gap 14 as shown in FIG. 2, the joint of the floor joint tape A is shown in FIG. A slight dent 7 may occur in a portion corresponding to. Although this dent 7 is not normally visually observed, it may be visually recognized when a lighting fixture, particularly a linear fluorescent lamp, etc. is reflected on the floor surface, which may impair the beauty.

  In order to prevent the occurrence of such slight wrinkles, a floor joint tape is used in which the center of the hot melt layer tape as shown in FIG. 4 is thicker than the periphery. Can be used.

  4 shows another example of the floor joint tape according to the present invention. The base film layer 1 has a hard coat layer 2 on one surface and a hot surface on the other surface. It is a floor joint tape provided with a hot melt layer 4 made of a melt adhesive.

  Reference numeral 3 in the figure denotes a primer treatment layer by a primer treatment performed for improving the adhesiveness of the hot melt layer 4 to the base film layer 1.

  In this floor joint tape, a hot-melt layer 5 made of a hot-melt adhesive is further formed in the center of the hot-melt layer 4. It is thick.

  The surface of the hot melt layer 4 other than the portion on which the hot melt layer 5 is formed is roughened as shown in the partial enlarged model sectional view in the figure.

  FIG. 5 is a model cross-sectional view showing a state where floor joints are subjected to antifouling construction using floor joint tape B. Reference numeral 11 in the figure denotes a P-tile with a protective film, which is composed of a P-tile 11b and a protective film layer 11a (floor protective sheet) fixed to the P-tile 11b via an adhesive layer (not shown). Reference numeral 14 denotes a joint gap. Even when the joint gap 14 is large, the hot melt layer 5 functions as a reinforcing material, so that the occurrence of dents caused by the floor joint tape A is prevented even when used over time. On the other hand, even when the joint gap is narrow, the hot melt adhesive constituting the hot melt layer 5 is absorbed by the joint gap during construction, so that the surface side of the floor joint tape B after construction is hot. A convex part is not formed in the melt layer 5 part.

  For example, as shown in FIG. 6, the floor joint tape B uses a nozzle (not shown) on the hot melt layer 4 side while moving the floor joint tape A in the length direction. It can be manufactured by partially supplying the hot melt adhesive 5 ′ that has been heated to a low viscosity and then allowing it to cool.

  The hot melt adhesive 5 'may be the same as that used to form the hot melt layer 4. For example, a rosin-based tackifier and an ethylene-ethyl acrylate hot melt adhesive main agent are mixed. In this case, since it becomes possible to lower the welding temperature of this portion, a higher adhesive force can be obtained.

  Examples of the floor joint tape of the present invention will be specifically described below.

  Using a UV-1400B made by Nippon Synthetic Chemical Industry Co., Ltd., which is a photo-curable hard coat resin, on one side of a 38 μm polyethylene terephthalate film (110 cm wide) as a base film layer, a hard coat layer having a thickness of 8 μm is formed. Formed. The pencil hardness (pencil scratch value in accordance with JISK5600-5-4) of this hard coat layer was 4H.

Next, 500 parts by weight of a mixed solvent in which toluene and ethyl acetate are mixed at a volume ratio of 2: 1, an important part of Seikadine PET-2100 manufactured by Dainichi Seika Co., Ltd. as a primer component, and 2 parts by weight of the curing agent for Seikadine PET-2 And applied to the other surface of the base film so as to have a converted dry basis weight of 0.3 g / m ^2, and then the solvent was evaporated to perform primer treatment.

  A hot melt layer was formed by laminating Hirodine 7589, manufactured by Yashara Chemical Co., Ltd., which is a hot melt adhesive, over the entire surface of the primer. At this time, the surface of the hot melt layer was roughened by using a pear ground roller together.

  Next, using a plurality of nozzles arranged in the width direction, 75 parts by weight of NUS 6090 made by Nippon Unicar Co., Ltd., which is an ethylene-ethyl acrylate hot melt adhesive main agent, is applied to the primer-treated surface while moving the film. A hot melt adhesive obtained by mixing 25 parts by weight of Mighty Ace G-125 manufactured by Yashara Chemical Co., which is a tempenphenol copolymer, with a twin-screw extruder as an agent is partially fed into a bowl-like convex shape A part (width 2 mm, convex part height 50 μm) was formed.

  It cut | disconnected so that the said hook-shaped convex part might become the center, and obtained the joint tape α for floors of width 1cm, and wound up.

  Using this floor joint tape α, the actual floor joint was antifouled.

  Specifically, in Patent Document 1 in which a pressure-sensitive adhesive layer (made of hirodine 7589) having a thickness of 30 μm is formed on one surface of a film made of polyethylene terephthalate having a thickness of 50 μm on a floor surface constructed by P-tile. Such floor protective sheets were bonded together such that the ends of the floor protective sheets were brought together.

  A floor joint tape α was placed along the joint formed by the protective sheets for floors, and temporarily fixed using another adhesive tape. Thereafter, the floor joint tape α was heated with a squeegee using a heat gun, and was brought into close contact with the joint part. It was bonded so that it would not easily peel off after being allowed to cool.

  As a result, even after one month, the floor joint tape α at the joint part was not peeled off and no dirt was attached, and it was visually visible as a unit with the P-tile part. In addition, a construction place is a convenience store, for example, about 100 people pass in 1 hour from 2 pm.

  In addition, 75 parts by weight of NUS6090 manufactured by Nihon Unicar Co., Ltd. and 25 parts by weight of Mighty Ace G-125 manufactured by Yashara Chemical Co., Ltd., which is a tackifier, are biaxially extruded to form the bowl-shaped convex part. Instead of a hot melt adhesive containing a tackifier obtained by mixing with a machine, 80 parts by weight of NUS6090 made by Nihon Unicar Company and 20 parts by weight of YS Polystar T-100 made by Yasuhara Chemical Co., Ltd. were obtained. In the same way, when the floor joint tape β produced using a hot-melt adhesive is used in the same manner, the floor joint tape β at the joint is also one month after the construction. The film was not peeled off and no dirt was attached, and it was in a state where it could be seen integrally with the P-tile part.

  As with the floor joint tape α, however, the floor joint tape α ′ produced without roughening the hot melt layer is left to stand at room temperature for 1 day after production, and is difficult to unwind during construction. However, in the same manner, the floor joint tape α which was allowed to stand after production could be easily rewound.

It is the model cross section which shows an example A of the floor joint tape concerning this invention, and its partial expanded model cross section. It is the model cross section which shows the state which performed the antifouling construction of the floor joint using the floor joint tape A, and its partial expanded model cross section. It is a model figure for demonstrating the dent 7 which arises with time when performing the antifouling construction of the floor joint using the floor joint tape A. It is the model cross section which shows an example B of the floor joint tape concerning this invention, and its partial expanded model cross section. It is the model cross section which shows the state which performed the antifouling construction of the floor joint using the floor joint tape B, and its partial expanded model cross section. It is a model figure which shows the method of forming the hot-melt layer 5 which further consists of a hot-melt-adhesive agent in the center of the tape of the hot-melt layer 4 of the joint tape B for floors. It is a model figure explaining the problem of a prior art. It is a model figure explaining the problem of a prior art.

Explanation of symbols

A Floor joint tape according to the present invention B Floor joint tape according to the present invention 1 Base film layer 2 Hard coat layer 3 Primer treatment layer 4 Hot melt layer 5 Hot melt layer

Claims (6)

  A floor joint tape comprising a base film layer and a hard coat layer on one surface and a hot melt layer made of a hot melt adhesive on the other surface.   The floor joint tape according to claim 1, wherein the hot melt adhesive contains a tackifier.   3. The floor joint tape according to claim 1, wherein the center or the vicinity of the center of the tape of the hot melt layer is thicker than the periphery thereof.   The floor joint tape according to any one of claims 1 to 3, wherein the hard coat layer has a thickness of 5 µm to 10 µm.   The floor joint tape according to any one of claims 1 to 4, wherein at least a part of the surface of the hot melt layer is a rough surface.   The floor joint antifouling construction method using the floor joint tape according to any one of claims 1 to 5.

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