Wallpaper cutting underlay tape and its manufacturing method

Abstract

To obtain a material that is lightweight and flexible and has good handling properties while effectively protecting a base material.SOLUTION: In an underlay tape 11 for cutting a wallpaper in which synthetic resin films 13, 14 are arranged on both front and back sides of a flexible net-like sheet 12, intersection points 23 of warp threads 21 and weft threads 22 constituting the net-like sheet 12 are adhesively fixed to the films 13, 14. Further, a space 16 in which the films 13, 14 are not bonded to each other is formed between the films 13, 14 at a portion other than the portions corresponding to the intersection points 23.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] This invention relates to a wallpaper cutting underlay tape that is placed between the joints of wallpaper and the base material when pasting wallpaper on a wall or the like, to protect the base material from damage when cutting the wallpaper. [Background technology]

[0002] An example of an underlay tape for cutting wallpaper is disclosed in Patent Document 1 below.

[0003] This wallpaper cutting underlay tape is made by covering both the front and back of a flexible mesh sheet with synthetic resin film, and only the edges of the mesh sheet and the front and back synthetic resin films are bonded together with adhesive.

[0004] This structure allows the mesh sheet to be wrapped in a synthetic resin film bag, with each layer separated from the other in the middle widthwise. When cutting wallpaper with a cutter, the blade of the cutter cuts through the upper synthetic resin film and catches on the flexible weft of the mesh sheet. Since the weft of the mesh sheet moves, it is not immediately cut, but remains caught on the blade and slides along the lower film in the cutting direction. Therefore, even when the blade of the cutter hits the substrate, it only makes intermittent contact, preventing continuous scratches and providing extremely effective substrate protection. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 4235751 Summary of the Invention [Problem to be solved by the invention]

[0006] The underlay tape of Patent Document 1 has a structure in which only the edge portions on both sides of the mesh sheet are adhered to the synthetic resin film, so a certain width of the adhesive portion is required to integrate the mesh sheet and the synthetic resin film, which pulls the weft thread when cut.

[0007] However, if the adhesive is applied over a large area, the underlay tape becomes heavy and hard, making it difficult to handle. In particular, if the underlay tape is hard, it becomes difficult to remove the underlay tape from under the wallpaper.

[0008] Therefore, the main object of the present invention is to provide a lightweight and flexible sheet that effectively protects the substrate. [Means for solving the problem]

[0009] The means for achieving this is a wallpaper cutting underlay tape in which synthetic resin films are arranged on both the front and back of a flexible mesh sheet, and the intersections of the warp and weft threads that make up the mesh sheet are adhesively fixed to the film, and spaces are formed between the films in areas other than those corresponding to the intersections to prevent the films from adhering to each other.

[0010] In this configuration, the mesh sheet and film are bonded to each other at multiple points, i.e., at the intersections of the warp and weft threads distributed across the entire surface, resulting in a wallpaper cutting underlay tape that is formed into a single sheet as a whole while reducing the amount of adhesive used. Even though it is a single sheet, the spaces between the films allow for a time lag between the cutting edge of the film on the front and the film on the back, promoting peripheral deformation and dispersing the force of the cutting tool's cutting edge, thereby increasing the tape's cut resistance. Films that are highly integrated with the mesh sheet can be very thin and lightweight. [Effects of the Invention]

[0011] According to this invention, the amount of adhesive used can be reduced, resulting in a lightweight and flexible product. Moreover, since the mesh sheet and film bonded together form a highly integrated structure, a very thin and soft film can be used, which also increases flexibility and improves handling.

[0012] Furthermore, because the mesh sheet and film are bonded at multiple points distributed over the entire surface, the area where the weft yarns are pulled by the blade edge during cutting is narrow, unlike the bag-like structure of the conventional tape in Patent Document 1, and the load can be distributed well. This means that it is possible to use an inexpensive, easy-to-cut material for the mesh sheet instead of a material that is difficult to cut. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is a perspective view of a wallpaper cutting underlay tape. [Figure 2] FIG. 2 is a partially cutaway plan view of a wallpaper cutting underlayment tape. [Figure 3] Cross section AA of Figure 2. [Figure 4] 1A to 1C are explanatory diagrams showing a method for manufacturing a wallpaper cutting underlay tape. [Figure 5] FIG. [Figure 6] FIG. DETAILED DESCRIPTION OF THE INVENTION

[0014] An embodiment of the present invention will be described below with reference to the drawings.

[0015] Fig. 1 shows a perspective view of underlay tape 11 for cutting wallpaper (hereinafter referred to as "underlay tape"). Underlay tape 11 is configured with synthetic resin films 13 and 14 disposed on both the front and back sides of flexible mesh sheet 12, and is formed into a tape shape of a fixed width as shown in Fig. 1. Although it has a layered structure as described above, underlay tape 11 as a whole is in the form of a single film.

[0016] That is, in the underlay tape 11, the intersections 23 of the warp threads 21 and weft threads 22 that make up the mesh sheet 12 are adhered and fixed to the films 13, 14 on both the front and back sides. The adhesion is achieved by adhesive 15, and as shown in Figure 2, the adhesive 15 is present at the intersections 23. It is preferable that the adhesive 15 is present only at the intersections 23, but it is also possible that the adhesive 15 is present in areas other than the intersections 23, in other words, that the adhesive 15 is present mainly at the intersections 23.

[0017] By the above-described bonding, spaces 16 are formed between the films 13 and 14 sandwiching the mesh sheet 12, in areas other than the areas corresponding to the intersections 23, which prevent the films 13 and 14 from bonding to each other.

[0018] Furthermore, non-constrained portions 24 that are not bonded to the films 13, 14 are formed in areas of the mesh sheet 12 other than the intersections 23. The non-constrained portions 24 may be non-constrained to both the front film 13 and the back film 14, or may be non-constrained to only one of them. Note that the adhesive 15 may be present mainly in the intersections 23, so not all linear portions of the warp yarns 21 and weft yarns 22 need to be non-constrained portions 24.

[0019] The mesh sheet 12 is made up of warp threads 21 and weft threads 22 made of spun yarn, and has an appropriate mesh size. The spacing between the weft threads 22 is preferably set to about 2 mm to 5 mm from the viewpoints of flexibility and reduced cut resistance to the base material. The spacing between the warp threads 21 may be wider.

[0020] The mesh sheet 12 may be made of any flexible material, such as synthetic fibers like nylon (registered trademark), vinylon, polyester, polyethylene, polypropylene, acrylic, aramid, and polyarylate, or natural fibers like cotton, hemp, wool, and silk. The warp threads 21 and weft threads 22 may be made of the same material or different materials. The underlay tape 11 may be made of polyester, for example, which can be cut by the blade of a cutter during use. The mesh sheet 12 may also be made of other materials, such as synthetic resin monofilaments.

[0021] The films 13 and 14 can be made of suitable materials such as polyethylene or polypropylene, and it is desirable to use a light, thin, and soft film with a thickness of about 8 to 25 μm. The films 13 and 14 on both sides may be made of the same material, or may be made of different materials. The films 13 and 14 may also be embossed, for example.

[0022] The adhesive 15 that bonds the mesh sheet 12 and the films 13, 14 is preferably transparent, but if the mesh sheet 12 is white or transparent and the films 13, 14 are transparent, the underlay tape 11 will be difficult to see during use. For this reason, in that case, it is advisable to use a light-colored adhesive 15.

[0023] Examples of adhesive 15 that are flexible when hardened include rubber-based adhesives, acrylic-based adhesives, silicone-based adhesives, and acrylic vinyl acetate-based adhesives. These may be used alone or in combination of two or more. As shown in FIG. 2, adhesive 15 is applied to intersections 23 of mesh sheet 12, and adheres and holds films 13 and 14 to both sides of mesh sheet 12. As a result, the aforementioned space 16 is formed between films 13 and 14, as shown in FIG. 3, which is a cross-sectional view taken along line AA in FIG. 2. Film 13 on the front surface and film 14 on the back surface that form space 16 are free from each other and can move relative to each other.

[0024] Furthermore, the intersections 23 of the mesh sheet 12 are bonded to the films 13, 14, and the areas other than the intersections 23, i.e., the areas where the warp threads 21 and weft threads 22 extend linearly, form the aforementioned unconstrained areas 24 that are not bonded to the films 13, 14. In these unconstrained areas 24, the films 13, 14 on both the front and back sides and the warp threads 21 and weft threads 22 of the mesh sheet 12 are free to move relative to each other.

[0025] The underlay tape 11 having such a configuration can be manufactured by applying adhesive 15 only to the intersections 23 of the mesh sheet 12 and adhering the films 13 and 14 together, but can be manufactured with good productivity using existing equipment by doing the following.

[0026] That is, the manufacturing method includes an application step S1, a scraping step S2, and a bonding step S3, as shown in Fig. 4. The application step S1 is a step of applying adhesive 15 to the mesh sheet 12. The scraping step S2 is a step of removing adhesive 15 from the mesh sheet 12 on which the adhesive 15 has been applied, where the adhesive 15 is isolated from the warp yarns 21 and weft yarns 22. The bonding step S3 is a step of attaching films 13, 14 to both sides of the mesh sheet 12 to form the space portion 16 and the non-restrained portion 24 described above.

[0027] The coating step S1 and laminating step S3 can be performed using existing equipment, and the scraping step S2 can be performed using an existing drying device 54. That is, in the laminating step S3, the mesh sheet 12 is unwound from a roll, and adhesive 15 in a liquid tank 53 is applied to the mesh sheet 12 by a backup roll 51 and a gravure roll 52. In Figure 4, the mesh sheet 12 is represented by a dashed line.

[0028] Thereafter, the mesh sheet 12 coated with the adhesive 15 is conveyed into a drying device 54, where air 54a is blown onto the mesh sheet 12 to remove the adhesive 15 that has adhered to it, mainly from areas other than the intersections 23. The intersections 23 are structured so that the warp yarns 21 and weft yarns 22 intersect and easily attract and hold the adhesive 15, so the adhesive 15 is difficult to remove even when air 54a is blown in. However, the adhesive 15 is blown away from the individual portions of the warp yarns 21 and weft yarns 22, i.e., the linear portions between the intersections 23. As a result, the adhesive 15 remains mainly at the intersections 23.

[0029] The mesh sheet 12 from which the excess adhesive 15 has been scraped off in this way is sent to laminating rolls 55 and 56, and films 13 and 14 fed from film rolls are superimposed on both sides of the mesh sheet 12 to be laminated.

[0030] Thereafter, the tape is cut to a certain width in a slitting process (not shown), and then wound up into a plurality of rolls to form the underlay tape 11 wound in a roll shape.

[0031] As shown in Figure 5, the underlay tape 11 configured as described above is placed at the joint between wallpapers 72, 73 to be attached to a wall base material 71, and protects the base material 71 when the wallpapers 72, 73 are cut. When using the tape, the wallpapers 72, 73 are first attached to the base material 71 so that the edges of the wallpapers 72, 73 to be joined overlap. At this time, the underlay tape 11 is placed under the lower wallpaper 72 located on the base material 71 side.

[0032] When laying the underlay tape 11, it does not matter whether the front or back is facing downwards, and either film 13 or 14 may be facing downwards.

[0033] Next, the overlapping portions of the wallpapers 72 and 73 are cut vertically in a straight line with a cutter. After cutting, the underlay tape 11 is pulled out from under the wallpapers 72 and 73 and removed, and the wallpapers 72 and 73 are attached to the base material 71.

[0034] When cutting the wallpaper 72, 73, as shown in Figure 6, the cutting edge of the cutter 75 penetrates the wallpaper 72, 73 to a depth that cuts into part or all of the underlay tape 11. When cutting, even if the cutting edge of the cutter 75 penetrates the front film 13, the presence of the space 16 prevents the cutting edge from simultaneously reaching the back film 14, and there is a time lag before this happens. The cutting edge causes the front film 13 to move slightly relative to the back film 14.

[0035] The weft yarn 22 caught on the cutting edge is pulled by the cutting edge, and in the non-restrained portion 24, it is deformed and moves separately from the films 13, 14.

[0036] In this way, the space 16 promotes deformation and displacement around it, dispersing the force of the cutting edge, thereby improving the cut resistance of the base material 71.

[0037] Furthermore, the mesh sheet 12 and the films 13, 14 are bonded at intersections 23 that extend over the entire surface, and these intersections 23 are evenly distributed over the entire surface of the underlying tape 11. For this reason, the portion of the weft yarn 22 that is directly pulled by the cutting edge is not a wide area in the width direction of the underlying tape 11, but a narrow area corresponding to the size of the mesh, and the load on the cutting edge is distributed over the intersections 23. This also improves cut resistance, and as a result, it is possible to use an inexpensive material that is cuttable for the mesh sheet 12 rather than a material that is difficult to cut.

[0038] Furthermore, because the mesh sheet 12 and the films 13 and 14 are bonded to each other at multiple points distributed in the planar direction, the amount of adhesive 15 used can be reduced compared to bonding to a fixed width with a predetermined adhesive strength. Moreover, unlike a bag-like product with many separated areas in the thickness direction, the entire product can be formed into a single thin sheet, so the film can be made extremely thin. These lightweight and flexible products make it easier to handle.

[0039] As described above, an underlay tape 11 is obtained which effectively protects the underlay material 71, while being lightweight, flexible, and easy to handle. [Explanation of symbols]

[0040] 11...Wallpaper cutting tape 12...Mesh sheet 13,14...Film 15...Adhesive 16…Space part 21...warp threads 22...Weft 23…Intersection 24…Unrestrained part 54a...Air S1: Coating process S2: Slicing process S3: Bonding process

Claims

1. A wallpaper cutting underlay tape having synthetic resin films on both the front and back sides of a flexible mesh sheet, Intersections of warp yarns and weft yarns constituting the net sheet are adhesively fixed to the film, A space portion that prevents the films from being bonded to each other is formed in a portion between the films other than the portion corresponding to the intersection portion. Underlay tape for cutting wallpaper.

2. A non-restrained portion that is not adhered to the film is formed in the mesh sheet at a portion other than the intersection portion. The wallpaper cutting underlay tape according to claim 1.

3. A method for manufacturing wallpaper cutting underlay tape, which comprises a flexible mesh sheet with synthetic resin films disposed on both the front and back sides thereof, a coating step of applying an adhesive to the mesh sheet; a scraping step of blowing air onto the mesh sheet to remove adhesive from individual portions of the warp and weft yarns in the mesh sheet; The method includes a bonding step of bonding the films to both sides of the mesh sheet, adhesively fixing the intersections of the warp and weft yarns of the mesh sheet to the films, and forming spaces between the films to prevent the films from adhering to each other at locations other than the intersections. A manufacturing method for wallpaper cutting underlay tape.

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