KR20140133175A - Sticker Structure - Google Patents

Abstract

The present invention is to provide a sticker structure, which does not leave an adhesive when exfoliated, being re-usable, easy to keep, and conveniently usable for sticker style teaching tools. The present invention provides a sticker structure, which comprises a release paper; a polyethylene layer laminated on the surface of the release paper at a thickness of 20-30 μm; an adhesive layer having the adhesion of 2 g/25 mm to 10 g/ 25 mm and coated on the polyethylene layer at a thickness of 12-20 μm; and an ordinary paper manufactured with a synthetic resin film or a metal thin film laminated and adhered on the adhesive layer to be separable.

Description

Sticker Structure {Sticker Structure}

The present invention relates to a sticker structure that can be used to trick books such as a textbook or a reference book of a student and a children's educational parish.

In general, a book is a book, a book, a textbook and a reference book of a student, and a teaching book for a child, etc. There are various kinds such as a book, a book, a drawing, .

The above-mentioned book comprises a cover which is a cover of a book and a plurality of inks in which a letter or a pattern is printed in the cover, and binds the book by binding together the cover and several inks. The above-mentioned inlay is used as a sheet on which a letter or a picture is printed, or a sheet on which a sticker is provided together with the sheet.

  The above-mentioned stickers are used for various purposes such as trademarks and signs for propaganda advertisements as well as for the parcels. As shown in Fig. 1, the sticker of the conventional general structure is generally composed of a plain paper layer 1, a pressure-sensitive adhesive layer 2 and a release paper layer 3 forming a base. A PE film layer 4 (PE coating layer) is laminated on the surface of the paper peeling layer 3 in the manufacturing process so that the PE film layer 4 can be easily separated from the peeling layer 3, The silicon layer 5 is formed by coating silicon on the silicon layer 5.

In the case of synthetic resin films, silicon is coated on a PE coated surface (for example, embossed PE) to directly or specifically impart a function to the surface of a film. In recent years, a non-PE stripping paper It is also developed and used. The adhesive is coated on the release coated surface treated with silicone and dried, and the sticker is completed after laminating with plain paper.

The above-mentioned plain paper is used by putting the necessary text or pattern on its surface by printing or peeling off it, or peeling it off from the release paper and attaching it to the other adhered surface. The adhesive is separated from the release paper like general paper, It is transferred to the back side of the paper and the plain paper is attached to the other side of the paper. Typical gardens include not only synthetic paper such as PET, PVC, PE, PP, synthetic paper but also nonwoven fabric, satin, etc., as well as special paper such as thermal paper, depressed paper, as well as art paper, imitation paper, A metal foil such as an aluminum sheet and a film and a sheet of other composite material are used and a product having various colors and transparency such as color, transparency, opaque, translucent, yellow, red and blue is used.

This plain paper is usually printed with various phrases, drawings and pictures and cut or cut along the shape. However, in this case, it is difficult to detach from the release paper and the adhesive applied to the tacky complex is difficult to remove because it is coated with adhesive. Even if the plain paper is peeled off, the adhesive on the back side of the plain paper may cause the adhesive to adhere to the hands, clothing, and other objects, or the foreign material may stick to the back side of the plain paper.

Korean Patent Publication No. 1995-9968 proposes a method in which a white ink is partially printed on a pressure-sensitive adhesive layer so that a portion where a white ink is printed loses an adhesive function, thereby giving a non-adhesive function to a plain paper. Japanese Patent No. 305874 discloses a method of applying a viscous non-stick polymer to the surface of a pressure-sensitive adhesive, and Japanese Patent Application No. 10-1011974 discloses a method in which a first coating in which a polyolefin resin is emulsified with an emulsifier and a latex in which n-butyl acrylate is contained There is a method in which the second coating is used to utilize the non-sticking function of the first coating and the second coating, but they have a problem in that the cost increases due to addition of a process or the like.

Of course, it is possible to impart non-tackiness to plain paper by coating silicon on the backside of plain paper, but when uncured silicone is transferred to the surface of plain paper in the case of silicone coating, there is a problem that printing failure occurs on the surface of plain paper.

On the other hand, a prior art using a sticker as a teaching material has an inlay structure provided with a non-sticking sticker of Korean Utility Model Application No. 20-2012-0006801.

The above-mentioned prior art design has a three-layer structure in which a non-adhesive sticker in the form of a transparent film made of PET is used as a general paper and a sheet paper on which a pressure-sensitive adhesive layer is formed is attached. It is cut along the outline shape, and the figure part is removed and used as a necessary teaching material.

However, in the above-described method, when the non-adhesive sticker (corresponding to the plain paper 1) is removed, the pressure-sensitive adhesive layer on the sheet is partially transferred to the non-adhesive sticker, The problem of staining the surface of the synthetic resin film or causing contamination on the back side as described above is not completely solved.

Korea public utility model 20-2012-0006801 Korean Patent Publication No. 1995-9968 Korean Patent No. 10-1011974 Korea Utility Model Registration No. 305874

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the problems of the prior art described above, and it is an object of the present invention to provide a sticker structure that can be conveniently used in a sticky type teaching material that can be reused at the time of use, .

In order to achieve the above object, A polyethylene layer laminated on the surface of the release paper to a thickness of 20 mu m to 30 mu m; A pressure-sensitive adhesive layer having an adhesive strength of 2 g / 25 mm to 10 g / 25 mm and applied to the polyethylene layer in a thickness of 12 μm to 20 μm; And a common paper formed of a synthetic resin film or a metal foil laminated on the pressure-sensitive adhesive layer and releasably adhered thereto.

According to the present invention, when a plain paper formed as a synthetic resin film or a metal foil layer is peeled off, the adhesive is prevented from being transferred to the plain paper, so that it is prevented from being contaminated by the adhesive and sticking to other materials when used as a pouring material, It is environmentally friendly because it is convenient for reuse because general paper is in a non-stick state, and can be particularly useful for a sticky type pouring material.

1 is a conventional sticker structure.
2 is a view showing a sticker structure according to the present invention.

The present invention will be described with reference to the following examples. Such embodiments are used only to implement the present invention, but do not limit the scope thereof. Although the detailed conditions of the experimental method are not disclosed, general experimental conditions or general experimental conditions suggested by the manufacturer may be used.

Unless otherwise defined or illustrated herein, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art.

Fig. 2 is a perspective view of the sticker structure according to the present invention.

The sticky structure 10 includes a release paper 12 forming a base and a polyethylene layer 14 laminated on the surface of the release paper 12 and a pressure sensitive adhesive layer 14 applied to the surface of the polyethylene layer 14, (16), and a plain paper (18) laminated and adhered to the pressure-sensitive adhesive layer (16).

The polyethylene layer 14 is laminated on the surface of the release paper 12 in a thickness of 20 to 30 탆 and more preferably 23 to 30 탆 and the pressure sensitive adhesive layer 16 is laminated on the surface of the release paper 12 in accordance with Korean Industrial Standard Test Methods Quot; test method of pressure-sensitive adhesive tape and pressure-sensitive adhesive sheet ") No. KS T 1028 (Test Method for Pressure-Sensitive Adhesive Tape and Pressure-Sensitive Adhesive Sheet), which is applied to the polyethylene 14 layer with a thickness of 12 탆 to 20 탆, And the plain paper 18 detachably adhered thereto is formed of a synthetic resin film or a metal foil.

The reason for laminating the polyethylene layer 14 to a thickness of 23 탆 to 30 탆 is that the adhesive force of the pressure-sensitive adhesive on the release side is remarkably enhanced from the thickness of 23 탆 as a result of the test. In the case of the conventional sticker structure, The thickness of the pressure sensitive adhesive is usually 15 to 20 μm. However, in the case of such a conventional thickness, the pressure sensitive adhesive is often transferred to the ordinary paper 18. On the other hand, various experiments have revealed that the thickness of the lamination is at least 20 μm The phenomenon that the pressure sensitive adhesive is pulled toward the release paper side (i.e., the polyethylene layer side) begins to increase. Particularly when the thickness is more than 23 탆, the pressure sensitive adhesive is not transferred to the plain paper 18, Of the total number of patients. If the lamination thickness exceeds 30 μm, the resin is unnecessarily used in a large amount, which is uneconomical. Therefore, the lamination thickness of the polyethylene layer 14 is optimum to be 23 μm to 30 μm.

The conventional pressure-sensitive adhesive has a high adhesive strength, and the sticky structure is applied to the upper and lower portions of the teaching material. The adhesive strength of the pressure-sensitive adhesive layer and the applied amount of the pressure-sensitive adhesive have been conventionally about 500 g / 25 mm to 1000 g / 25 mm, When used as an inlay, when the plain paper is peeled off and the textbook is unfolded, the peeled paper that is peeled off is stuck on the front of the textbook. In view of such a phenomenon, the present inventors have found through repeated experiments that the ordinary paper 18 does not naturally fall off the pressure-sensitive adhesive layer 16, and the minimum adhesive force condition that can be tested is 2 g / 25 mm to 50 g 25 mm to 25 g / 25 mm, preferably 2 g / 25 mm to 10 g / 25 mm, and most preferably, the minimum tacking condition capable of maintaining the tacky state without the transfer of the tacky agent is 2 g / 25 mm to 5 g / 25 mm. Under such conditions of adhesion, the adhesive property is significantly lower than in the past. However, since the plain paper 18 adhered to the surface of the paper 18 is a uniform and thin material, it sticks well and can be maintained in a bonded state The adhesive force of the adhesive layer 16 remaining on the side of the release paper 12 after removing the plain paper 18 is significantly weaker than that of the prior art so that the phenomenon of sticking strongly to the front end of the teaching material is eliminated, This weak adhesive force also prevents the adhesive from being transferred to the plain paper 18 side because the adhesive is strongly attracted to the polyethylene layer 14 on the side of the plain paper 18.

As a result of the experiment, in order to meet the same object, the adhesive properties of the pressure-sensitive adhesive were evaluated in terms of inherent physical properties such as a glass transition temperature (Tg) of -60 to -40 ° C., After drying at 120 ° C for 2 minutes and aging at 60 ° C for more than 24 hours, SUS 304 stainless steel was applied as a test strip, and a 25 mm wide strip was transported at a feed rate of 300 mm per minute The load that can withstand under the conditions expressed in g must satisfy 10g / 25mm or less.

The step of manufacturing the sticker structure 10 comprises a step of unwinding the release paper 12 supplied in a roll form, a coating step using a roller of polyethylene and an adhesive, a drying step, a lapping step with a plain paper, and a winding step. Since the same process is general, the detailed process is not shown.

In the present invention, the curing time and drying speed of the pressure-sensitive adhesive are another condition for imparting non-tackiness when peeling off the plain paper (18). The curing time depends on the constituent components of the pressure-sensitive adhesive, the reaction temperature, the amount of the initiator / curing agent, and the like. In order to facilitate smooth operation and adjustment, the two- By using the method of reducing the adhesive force between the plain paper and the adhesive by making the hardened adhesive come into contact with the plain paper, it was possible to prevent the adhesive transfer to the plain paper.

The amount of adhesive applied is also related to adhesive strength. When the amount of adhesive is increased, the adhesion is weakened due to strong adhesive force, so that the drying amount (dry) is reduced to 18 μm or less.

As the above-mentioned plain paper 18, a synthetic resin film such as PET (polyethylene terephthalate), PP (polypropylene), PVC (vinyl chloride resin), PE (polyethylene), PS (polystyrene) , Nylon film, and the like, and can be used in accordance with applications such as transparent, translucent, opaque and colored products, and aluminum foil can be used as the metal foil, and if necessary, a cloth, a nonwoven fabric, It is possible to use.

10: Sticker structure
12: Park Jiji
14: polyethylene layer
16: Pressure-sensitive adhesive layer
18: Plain paper

Claims (1)

Park, Ji - Wo; A polyethylene layer laminated on the surface of the release paper to a thickness of 20 mu m to 30 mu m; A pressure-sensitive adhesive layer having an adhesive strength of 2 g / 25 mm to 10 g / 25 mm and applied to the polyethylene layer in a thickness of 12 μm to 20 μm; And a common paper formed of a synthetic resin film or a metal foil laminated on the pressure-sensitive adhesive layer and detachably adhered thereto.

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