JP3088323U - Sheet body separation structure - Google Patents

Abstract

(57) [Problem] To provide a separation structure for a sheet body, which can easily form a cut edge in a roll-shaped sheet body wound in a roll. SOLUTION: The roll-shaped sheet member is a polygonal core member (3), and the thin film substrate (1) is a sheet member wound in a roll shape around the polygonal core member (3). A slit formed in at least one side end of the thin-film base (1) at a corner corresponding to a ridge line of each corner of the core (3) toward the direction of the core (3); 2). The polygonal shape may be a triangular prism, a quadrangular prism, a pentagonal prism, a polygonal prism such as a hexagonal prism, or a polyhedral shape. The substrate may be a substrate having an adhesive on one side.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a structure for separating a rolled sheet body, and more particularly to a roll-shaped sheet body suitable as a polygonal roll used for an adhesive tape or the like.

[0002]

[Prior art]

 Conventionally, a long thin sheet body such as a toilet paper roll is typically all wound into a cylindrical shape. In order to easily separate (tear off) such a sheet body in the process of handling, it is necessary to form a hole or a hole punched in a dotted line by pressing the sheet body at each position of a predetermined length depending on the application. A so-called perforation).

[0003] In particular, in the case of an adhesive tape, for example, in Taiwan Patent Application No. 722,090 filed on June 21, 1983, which is called "adhesive cut-type adhesive plastic tape," there is disclosed a method in which the punched hole is formed on the adhesive tape. There is disclosed an OPP (oriented polypropylene) adhesive tape provided with (perforations) and having a cut-off point setting type.

[0004] Further, for example, Taiwan Patent Application No. 77211389, filed on December 5, 1988, entitled "Transverse Type New Adhesive Tape", discloses a new type of transverse type adhesive tape as described below. . That is, the adhesive tape is installed together with a guide angle placed at the side end of the adhesive tape main body, and is applied to an adhesive tape having an adhesive partially on one surface. The pressure-sensitive adhesive tape has a non-adhesive portion left in a part near the guide angle side portion as a tape grip lifting portion. In addition, a separation groove for separation is formed on the surface of the adhesive tape, and a strip-shaped (strip-shaped) adhesive tape is formed between the two separation grooves.

[0005]

[Problems to be solved by the invention]

 In recent years, adhesive tapes with a microporous structure have been developed by applying microfabrication technology to provide adhesive tapes that can be easily separated in various directions. However, this kind of pressure-sensitive adhesive tape has a problem that it is difficult to cut the tape-side end (to form a cut) at the time of cutting, because of the flexibility of the pressure-sensitive adhesive tape itself.

[0006]

[Problems to be solved by the invention]

 SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a separation structure for a sheet body that can easily form a cut edge in a sheet body wound in a roll.

[0007]

[Means for Solving the Problems]

 The present invention has been made in order to solve the above-mentioned problem, and in a structure for separating a sheet, which is suitable as a polygonal roll used for an adhesive tape or the like, a thin film-shaped substrate as a sheet has a polygonal core material. A slit is formed on at least one side end of the thin film substrate corresponding to the ridge line of each winding angle of the core material. And this slit is cut deeply to the core material.

In the present invention, the polygonal core material may have a polygonal prism shape such as a triangular prism shape, a quadrangular prism shape, a pentagonal prism shape, a hexagonal prism shape, or a polyhedral shape. It may be a nonwoven fabric or a thermoplastic substrate such as polypropylene or polyester. Further, the thin film substrate may be an adhesive tape having an adhesive on at least one surface.

According to the present invention, the thin film-shaped substrate as a sheet is easily separated from the slit as a starting point along a ridge formed by the curvature of the substrate at the corner of the core.

[0010]

[Embodiment of the invention]

 The details of the embodiment of the sheet separating structure according to the present invention are shown in the accompanying drawings and description below. Other features, objects, and advantages of the invention will also be set forth in the description, drawings, and claims. FIG. 1 is a diagram showing a schematic configuration of a flat plate type according to the present invention, that is, a structure for separating a sheet body composed of two corners and two surfaces. A typical example of the thin film substrate 1 as a sheet is a material such as paper, nonwoven fabric, or polypropylene (PP) or polyester (PET). The slit 2 is formed in the thin-film base 1 at the side edge of the thin-film base 1 at the corner of the core material 3. This slit 2 is cut deeply toward the surface of the core material 3.

FIG. 2 is a perspective view showing a structure for separating the flat sheet member of FIG. According to this structure, as shown in FIG. 2, the thin film substrate 1 is placed on either the right or left side of the thin film substrate 1 at one of the two winding angles of the core material 3. Can be easily separated (cut) along the direction of the ridge line of the core material 3 from the slit 2 as a starting point. These slits 2 are formed by cutting a small amount from the side end of the thin film base 1 deeper toward the ridge line of the core material 3. Therefore, the thin film-like substrate 1 as a sheet body can be easily and orderly separated from the slit 2 along the ridge formed by the curvature of the thin film-like substrate 1 at the corner of the core material 3.

FIG. 3 is a perspective view showing a structure for separating a triangular prism type sheet member according to another embodiment of the present invention. As shown in FIG. 3, slits 2 are cut into the side edges of the thin-film base 1 at the ridge positions of the three winding angles of the triangular structure. The slit 2 is cut deeply toward the surface of the core material 3.

FIG. 4 is a perspective view illustrating a structure for separating a quadrangular prism-shaped sheet according to another embodiment of the present invention. As shown in FIG. 4, slits 2 are cut into the side edges of the thin film substrate 1 at the ridge positions of the four winding angles of the square structure. The slit 2 is cut deeply toward the surface of the core material 3.

FIG. 5 is a perspective view showing a separating structure of a pentagonal column type sheet according to another embodiment of the present invention. As shown in FIG. 5, the slits 2 are cut into the side edges of the thin film-shaped substrate 1 at the ridge positions of the five winding angles of the pentagonal structure. The slit 2 is cut deeply toward the surface of the core material 3.

FIG. 6 is a perspective view showing a hexagonal column-shaped sheet separating structure according to another embodiment of the present invention. As shown in FIG. 6, the slits 2 are cut into the respective side edges of the thin film substrate 1 at ridge positions of six winding angles of a hexagonal structure. The slit 2 is cut deeply toward the surface of the core material 3.

As described above, the present invention is suitable for a separation structure of a roll-shaped sheet body such as a polygonal roll paper or an adhesive tape, and these polygons are, for example, long sides of a multi-sided shape. It can be adapted to the required dimensions, such as arbitrarily changing the size.

The present invention is not limited to the above embodiment, and various modifications and changes equivalent to the description of the claims can be made without departing from the spirit of the present invention. For example, the present invention can be applied to a polygonal pillar having a shape of a heptagon or more, and ultimately to a cylindrical roll-shaped sheet, and the sheet is bonded to a general thin-film substrate or at least one surface. It can also be applied to pressure-sensitive adhesive tapes on which an agent is formed.

[0018]

[Effect of the invention]

 As described above, according to the present invention, in the sheet body separating structure, the thin film-shaped base body as the sheet body is wound in a roll shape around a polygonal core material, and each winding angle of the core material is adjusted. A slit is cut in the side end of the thin film-like substrate at at least one corner corresponding to the ridge line, and the slit is deeply cut into the core material. From the starting point, it can be easily separated along the ridge formed by the curvature of the base at the corner of the core.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram illustrating a structure for separating a flat sheet member according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a separating structure of the flat sheet member of FIG. 1;

FIG. 3 is a schematic configuration diagram illustrating a triangular prism type sheet body separating structure according to another embodiment of the present invention.

FIG. 4 is a schematic structural view showing a structure for separating a quadrangular prism type sheet member according to another embodiment of the present invention.

FIG. 5 is a schematic configuration diagram showing a separation structure of a pentagonal prism type sheet according to another embodiment of the present invention.

FIG. 6 is a schematic configuration diagram showing a hexagonal prism type sheet body separating structure according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Thin film base 2 ... Slit 3 ... Core material

Claims (4)

[Utility model registration claims] 1. A roll-shaped sheet body having a separating structure, comprising: a polygonal core; and a polygonal core wound around the polygonal core to form the rolled sheet. And a slit formed at a side end of the roll-shaped sheet body and extending from the roll-shaped sheet body to at least one ridge line of the roll. A sheet separating structure characterized in that: 2. The sheet separating structure according to claim 1, wherein the polygonal core material has a triangular prism shape, a quadrangular prism shape, a pentagonal prism shape, or a hexagonal prism shape. 3. The thin-film base of the roll-shaped sheet body,
2. The structure for separating a sheet body according to claim 1, wherein the structure is a paper, a nonwoven fabric, or a thermoplastic substrate. 4. The sheet separating structure according to claim 1, wherein the thin-film base has an adhesive on at least one surface.