JPH07210086A - Self-tack sheet - Google Patents

Abstract

PURPOSE:To obtain a self-tack sheet which is usable by repetitive sticking. CONSTITUTION:The tacky adhesive layer part approximately corresponding to the printing part on the front surface of the self-tack sheet 10 formed by forming the tacky adhesive layer 16 on the rear surface of a sheet body 1 subjected to required printing on the front surface and sticking a release sheet 18 to the tacky adhesive layer 16 is formed by half tone printing as a weakly tacky adhesive part 22 and is further inscribed with a cutting blade frame 20 arriving at the weakly tacky adhesive part 22 along the printing part of the seal body 14. Pealing of the printing part is easy with such self-tack sheet 10 and the repetitive use thereof is possible. The production cost thereof is reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-tack sheet (self-adhesive sheet), and more particularly to a self-tack sheet that can be repeatedly attached.

[0002]

2. Description of the Related Art Conventionally, a self-tack sheet in which a pressure-sensitive adhesive layer is formed on the back surface of a sheet body whose surface has been subjected to required printing and a release sheet is attached to this pressure-sensitive adhesive layer is It is used for various purposes such as labels, patches, tags, and exhibition cards.

As one of the uses of such a self-tack sheet, a picture book for infants is formed as a patch-type tack sheet by printing, for example, various animal designs on the surface of the sheet body. , There is something that improves the intellectual development while playing by sticking each animal's design patch to the predetermined position according to the progress of the story in the picture book.

By the way, in this kind of educational picture book, it is preferable that the pattern patch is attached or peeled off so that it can be used repeatedly. However, in the conventional self-tack sheet, the adhesive force of the adhesive is Since it is strong, the patch that was once attached cannot be easily removed, and if it is forcibly removed, it will be damaged.

On the other hand, a self-tack sheet has been proposed in which a pressure-sensitive adhesive is enclosed in a microcapsule and can be easily peeled off even if it is once attached, and can be repeatedly attached. The self-tack sheet has a high unit cost, and there is a problem to be solved that it is not profitable as a patch type tuck sheet used for educational picture books.

[Means for solving the problem]

Therefore, according to the present invention, an adhesive layer is formed on the back surface of the sheet main body having the required printing on the front surface, and a printed portion on the front surface of the self-tack sheet in which a release sheet is attached to the adhesive layer. By forming a substantially adhesive layer portion as a weak adhesive portion by halftone printing, further adopting a configuration in which a cutting blade frame reaching the weak adhesive portion along the printed portion of the sheet main body is engraved The purpose is to provide an inexpensive self-tack sheet that can be used.

[0007] In this case, as the halftone dot ratio of the halftone dot printing, the self-tack sheet used in the educational picture book is
For example, it is preferable to set a single halftone dot ratio set to about 50%, and if a plurality of weakly adhesive parts having different adhesive strengths are formed by halftone dot screen printing set to a plurality of halftone dot ratios, it can be used according to the application. It is preferable because the size of the glue can be adjusted.

[0008]

In this invention, since the adhesive layer portion substantially corresponding to the printed portion on the surface of the sheet body is formed as the weak adhesive portion by halftone printing, the printed portion (such as the pattern portion) peeled off from the release sheet is attached. The printed part is not damaged even if it is peeled off after being put on, and it can be repeatedly stuck and used.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, as an embodiment of the self-tack sheet according to the present invention, a patch type self-tack sheet used for an educational picture book will be illustrated and described in detail below with reference to the accompanying drawings.

In FIGS. 1 and 2, a self-tack sheet 10 according to the present invention has an adhesive layer 16 formed by applying an adhesive to the back surface of a sheet body 14 having a pattern patch 12 for animals or the like printed on the surface. A release sheet 18 coated with a silicone resin or the like is attached to the surface of the adhesive layer 16, and a cutting edge frame 20 reaching the surface of the adhesive layer 16 is engraved along the pattern patch 12 on the surface of the sheet body 14. The adhesive layer portion substantially corresponding to the back surface of the design patch 12 is formed as a weak adhesive portion 22 by halftone printing. In this case,
It is preferable to set the shading rate of the weak adhesive portion 22 on the back surface of the pattern patch 12 to a single shading rate of, for example, about 50%.

Then, the weak adhesive portion 22 on the back surface of the design patch 12 thus constructed has its adhesive strength reduced to about half of the adhesive strength of the other adhesive layer 16 portions due to the meshing by printing, so the design patch 12 Not only can it be peeled off easily, but even if the design patch 12 is peeled off after it is once attached, it will not be damaged because it is not adhesive and can be used repeatedly. Is.

Further, as shown in FIG. 3, the seat body 14
When printing various design patches 12, the shade ratio of the weakly adhesive portion 22 corresponding to each design patch 12 is set to various values according to the frequency of use and the degree of adhesive strength is appropriately set. Needless to say, it is okay.

On the other hand, as shown in FIG. 4, a pattern patch 1
The shading ratio of the weak adhesive portion 22 corresponding to 2 is 10 from the outside.
Gradation is added to the viscosity while leaving the same portion as the other adhesive layer 16 in the central portion as the pattern patch 12 while gradually reducing such as 0%, 60%, 40%, 20%. If it is formed so that the adhesive strength becomes stronger toward the center, the pattern patch 12 can be attached and used repeatedly in addition to the effect that it can be repeatedly applied.
It is suitable because it can be peeled off very easily, and further, the durability when sticking is improved and the length of the glue foot can be lengthened, and the like.

As a procedure for manufacturing the self-tack sheet 10, the release roll 18 having the back surface of the sheet body 14 previously attached to the original roll 24 is attached to the printing machine 26.
The pattern emblem 12 is printed by a method such as the following, and then the release sheet 18 is once peeled from the sheet body 14, and the adhesive layer portion corresponding to the pattern emblem 12 is weakly adhered to the pattern emblem 12 by a halftone printing machine 28. After forming 22, the release sheet 18 is attached again to the back surface of the sheet body 14, and the cutting blade device 30 reaches the surface of the weak adhesive portion 22 of the pattern patch from the surface of the sheet body 14 by the cutting blade device 30.
It is sufficient to engrave 0.

[0015]

As described above, according to the self-tack sheet according to the present invention, since the adhesive layer substantially corresponding to the design of the sheet body is formed as the weakly adhesive portion by the halftone printing, the design part is peeled off. Not only is it easy to perform, but it can be repeatedly used by sticking, and since the structure is simple, the manufacturing cost can be reduced.

Further, when the shading rate of the weakly adhesive portion is gradually reduced from the outside and the central portion is left with the same portion as the other adhesive layer to provide the adhesiveness with a gradation, it can be used repeatedly. Needless to say, peeling at the time of use can be carried out very easily, and further, durability at the time of sticking can be improved, and the length of the glue can be lengthened.

Although the embodiment of the self-tack seat according to the present invention has been described above, the present invention is not limited to this embodiment, and various design changes can be made without departing from the spirit of the present invention. Of course you can get it.

[Brief description of drawings]

FIG. 1 is a patch type self-tack sheet as an embodiment of the self-tack sheet according to the present invention, in which a
Is an overall perspective view, and b is a perspective view showing a state in which a part is peeled off.

FIG. 2 is an explanatory cross-sectional view of the patch type self-tack sheet shown in FIG.

FIG. 3 is a perspective view showing another embodiment of the patch-type self-tack sheet shown in FIG. 1, showing a state in which a part of the release sheet is peeled off.

FIG. 4 is a perspective view showing a further embodiment of the patch-type self-tack sheet shown in FIG. 1, with a part of the release sheet peeled off.

FIG. 5 is an explanatory view showing a manufacturing procedure of a patch type self-tack sheet as an example of the self-tack sheet according to the present invention.

[Explanation of symbols]

10 Self-tack sheet, 12 Design patch, 1
4 sheet body, 16 adhesive layer, 18 release sheet, 20 cutting edge frame, 22 weakly adhesive part,
24 rolls, 26 printing machine, 28 halftone printing machine, 30 cutting blade device,

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location C09J 7/02 JKN JLE

Claims (2)

[Claims] 1. A self-tack sheet in which a pressure-sensitive adhesive layer is formed on the back surface of a sheet main body having a required printing on the front surface, and a release sheet is attached to the pressure-sensitive adhesive layer, the pressure-sensitive adhesive being substantially corresponding to the printed portion on the front surface. A self-tack sheet, wherein an agent layer portion is formed as a weak adhesive portion by halftone printing, and a cutting blade frame reaching the weak adhesive portion is engraved along the printed portion of the sheet body. 2. The self-tack sheet according to claim 1, wherein the weakly tacky portion is formed by halftone printing with a single or multiple halftone ratios set.