KR20160022321A - Repositionable linerless thermosensitive label - Google Patents

Abstract

The present invention relates to a repositionable linerless thermosensitive label. The present invention relates to a linerless label paper for drastically preventing a paper from being rolled up due to thermosensitive printing. According to the present invention, the repositionable linerless thermosensitive label is outputted on the linerless label paper to be reattached in accordance with a purpose and prevent the paper from being rolled up due to printing, thereby doubling convenience of use.

Description

Repositionable linerless thermosensitive label < RTI ID = 0.0 >

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a repositioner blinkerless thermal label, and more particularly, to a linerless label paper in which curling of the paper due to thermal printing is significantly prevented.

Printing techniques using thermal paper have been utilized in various forms in our daily lives for the purpose of storing and confirming information such as receipts and order details.

However, when the thermal paper passes through the printer, there is a drawback that the paper is curled due to heat while being exposed to a high temperature, or the shape of the thermal paper curled in the form of a roll remains uncomfortable after printing.

There is a coating technique for preventing curling of the thermal paper. However, there is a limitation in selection depending on whether it is costly or suitable for printing.

In addition, there is a case where it is necessary to adhere the thermally-printed contents according to need, and a product which can cope with technically appropriate has not been developed.

Korean Patent Publication No. 2000-0022073

The present invention provides a roll or folded stack linerless label paper for continuous printing.

The present invention also provides a linerless label paper having an adhesive layer formed on the back surface thereof so as to be able to be repositioned.

The present invention also provides a linerless label paper having a specific adhesive layer pattern to prevent paper curl.

According to an aspect of the present invention, there is provided a roll or folding type repeller-blinkerless label paper having an adhesive layer pattern in the form of a strip, a figure, and a combination thereof on the back surface.

According to the present invention, it is possible to output to a linerless label paper and reattach it to suit the application, and curling of the paper due to the output can be prevented, which can double the convenience of use.

1 to 10 show patterns of an adhesive layer formed on the back surface of a linerless label paper according to the present invention.

Hereinafter, the present invention will be described in more detail.

The present invention provides a printable linerless label paper.

The present invention provides a reusable linerless label paper.

The present invention provides a linerless label paper having an adhesive layer pattern for preventing paper curl.

The printing may be performed by a thermal printing method using thermal paper.

The present invention provides a label sheet capable of repositioning through re-adhesion of an output printed matter while preventing curling of the thermal paper. To this end, an adhesive pattern of the type shown in the accompanying drawings is provided.

1. Patterning of adhesive layer

The present invention includes an adhesive layer provided on the back side of a thermal paper so that an end user can adhere to a desired portion of a sheet output through a printer, including a repositionable sheet.

The patterns of the present invention are as shown in the following drawings, and the functional characteristics of the patterns are as follows.

The pattern shown in Fig. 1 is obtained by adding an adhesive layer to the left or right side of the output paper. The adhesive layer provided on one side can impart tensile force to the thermal paper to minimize deformation due to printing. This pattern has the advantage of minimizing the amount of tacky use by imparting the adhesive layer to only one side, and is formed along the side surface, so that even if the paper is cut, it can be adhered.

The pattern shown in Fig. 2 is formed by forming an adhesive layer on both right and left sides of the output paper. Such a pattern is more advantageous in preventing curling of the paper than the pattern of FIG.

The pattern shown in FIG. 3 is a stripe-shaped adhesive portion formed in the direction in which the paper is output. Such a pattern can be adhered to the entire surface and has an advantage that the curling of the paper can be prevented more effectively.

The pattern shown in FIG. 4 has a stripe-shaped adhesive portion formed in a direction perpendicular to the direction in which the paper is output, and has the advantage of facilitating the adhesion of the Indica printed horizontally on the paper.

The pattern shown in FIG. 5 is advantageous in that it is excellent in preventing curling of the paper and can maintain a strong adhesive force although it has a disadvantage in that the pressure-sensitive adhesive is somewhat used.

The pattern shown in FIG. 6 has an advantage of providing a structural motive connected to the vertical and horizontal directions in the paper output direction, thereby preventing curling of the paper as much as possible and maintaining a strong adhesive force through the adhesive portions formed in the horizontal and vertical directions . The transverse adhered portion formed vertically in the output direction can be formed correspondingly to a cut line like a folded form, and can be formed corresponding to a necessary interval in the case of a continuous sheet (roll) in which no cut line exists .

The pattern shown in Fig. 7 is provided with an X-shaped adhesive portion for preventing the curling of the paper to the maximum, and is formed of a pattern that acts in the output direction of the paper so that the force for bending the paper can be evenly distributed on the left and right sides .

8 is also provided with an 'O' -shaped adhesive portion for preventing the curling of the paper as much as possible, and is formed of a pattern capable of distributing the force for bending the paper evenly on the left and right sides by acting in the paper output direction .

FIG. 9 is a graph showing the relationship between the force of bending the paper in the direction of paper output and the force of bending the paper evenly on both left and right sides, And has a pattern that can prevent the curling of the paper due to the edges.

Fig. 10 shows an adhesive portion of the honeycomb pattern. In the case of thermal paper, there may be a force to keep the shape of the roll being rolled and a property to bend toward the backside by heating at the time of output. This can be mitigated by introducing a functional element that can resist this.

2. Pressure sensitive adhesive composition

The present invention provides a pressure-sensitive adhesive composition capable of preventing heating and curling of a thermal paper by the shape of a roll paper.

As described above, the thermal paper supplied to the printer by being dried on the roll has a property of retaining the original fin shape. There is a factor (for example, a bimetallic principle) that can maintain or enhance the shape of the fin in the printing process by heating. A curling phenomenon of the paper can be further alleviated by constituting an appropriate pressure-sensitive adhesive composition for such a curling phenomenon.

2-1. Utilizing the volume expansion difference of the laminated structure

First, a volumetric swelling agent is added to the pressure-sensitive adhesive composition in which heat is applied due to the nature of the thermal paper, and the volume is increased by heating using the environment. An increase in the volume of the adhesive can provide an opposing force to push against the curling of the paper. However, if the volume expansion ratio is excessively large, the paper may be curled reversely or the adhesive performance may be deteriorated, so that it is sufficient that the paper provides a pushing force sufficient to maintain the flatness. There is no particular limitation on the type of such a bulky expanding agent, and it is preferable that the bulky expandable agent can be easily compatibilized with rubber, hot melt, acrylic, and silicone systems, which are general types of pressure sensitive adhesives.

Secondly, a layered structure of various sheets of paper can be utilized to prevent curling of the paper. A layer of material different from that of the paper can be introduced on one side or both sides of the front or back side of the paper. Further, it is possible to introduce layers of materials having different expansion coefficients on the front and back surfaces of the paper, respectively.

The expansion coefficient may be thermal, may be a property to moisture or other materials, and may introduce different layers to impart a force acting in an opposite direction to the curling of the paper upon thermal printing.

As an example of such a laminated structure, a fibrous pigment can be applied to the paper surface. The fibrous pigment can impart a rough feel to the surface of the paper to improve the writing feel or the characteristics of the printed product.

2-2. Use of solidifying agents

Generally, in the case of "adhesion" distinguishing from "adhesion", it is a preferable mode of the cohesive failure that an adhesive remains on the adherend on both sides when the adhesion state at the interface is peeled off. Therefore, the thicker the adhesive layer, the stronger the adhesive layer, and the thicker the adhesive layer, the more stress concentration occurs in defects such as voids and the adhesive force is lowered. ("Adhesion and Adhesion Chemistry and Application" However,

In the case of a pressure-sensitive adhesive, there is a side different from the above-mentioned adhesive.

That is, a state in which cohesive failure does not occur during peeling of the adhesive and an adhesive is not left on the applied agent is ideal, so that the adhesive force of the interface is inevitably relatively weak. Therefore, it is preferable that the release stress is made flexible and thick so as to be dispersed in the pressure-sensitive adhesive layer. Also, the more the pressure sensitive adhesive layer is, the stronger the adhesive force is. In addition, since it is necessary to exert a practically resistant adhesive force (tack) immediately after the sticking, the adhesive has two opposite properties such as the liquid property (fluidity) for wetting the adherend and the solid property (cohesion) . ("Chemistry and Application of Adhesion, Adhesion", 2002, Korea Society of Adhesives and Interfaces.

Examples of the pressure-sensitive adhesive include rubber, hot-melt, acrylic, and silicone. The acrylic pressure-sensitive adhesive has a relatively high hardness.

The acrylic system is a copolymer in which various acrylates and methacrylates are combined, and can be produced by liquid polymerization, but it is preferable to produce by emulsion polymerization. In some cases, a tackifier is used without adding a tackifier, but there are many cases where a tackifier is mixed for the purpose of imparting a special performance or adhering to a highly polarized surface. In this case, The composition can be constituted.

3. Other

In order to prevent the paper from being curled, the roll can be manufactured by curling the paper in a direction to relax the curling of the thermal paper. That is, a thermal paper roll is manufactured such that the direction in which the paper is dried by heating and the direction in which the paper is rolled is opposite to the direction in which the paper is rolled.

In addition, devices for preventing curling of the thermal paper printing device can be introduced. Various patents (such as a photo printer equipped with a decal device of Korean registered patent 10-1047066, a heat sensitive recording paper curl preventing device of Korea Utility Model 20-0138471 facsimile, a roll type paper bending prevention device of Korea Utility Model 20-0156000 facsimile , Korean Utility Model Office, 1994-0002111, anti-curling device for roll recording paper, etc.).

Hereinafter, the present invention will be described in more detail with reference to Examples. It should be understood, however, that these examples are for illustrative purposes only and are not to be construed as limiting the scope of the present invention.

[Comparative Example 1]

Printing was carried out on a thermal paper having a width of 7.7 mm (SINDORICO Co., Ltd.). The printed product was warped due to the shape of the roll and heat generated during printing.

[Comparative Example 2]

Printing was performed on a thermal paper of 5.2 mm in width (manufactured by Shindori Co., Ltd.). The printed product was warped due to the shape of the roll and heat generated during printing.

[Example 1] - [Example 9]

Adhesive layers of a pattern similar to that shown in Figs. 1 to 9 having a width of 1.2 mm were formed on the back surface of a 7.7 mm wide thermal paper roll (SINDORICO Co., Ltd.) using a hot melt type (Henkel) adhesive. As compared with the comparative example, the printed result was less deflected and smoothly adhered and reattached to a desired place.

[Example 10] - [Example 18]

On the back side of a 5.2 mm wide thermal paper roll (SINDORICO Co.), a pressure sensitive adhesive layer having a pattern as shown in Figs. 1 to 9 having a width of 1.2 mm was formed using a hot melt type (Henkel) adhesive. As compared with the comparative example, the printed result was less deflected and smoothly adhered and reattached to a desired place.

[Example 19]

A pressure sensitive adhesive layer having a pattern as shown in Figs. 1 to 9 having a width of 1.2 mm was formed on the back surface of a thermal paper roll having a width of 5.2 mm (SINDORICO Co., Ltd.) using a hot melt type (Henkel) adhesive. As compared with the comparative example, the printed result was less deflected and smoothly adhered and reattached to a desired place.

While the present invention has been particularly shown and described with reference to specific embodiments thereof, those skilled in the art will appreciate that such specific embodiments are merely preferred embodiments and that the scope of the present invention is not limited thereby. something to do. It is therefore intended that the scope of the invention be defined by the claims appended hereto and their equivalents.

Claims (4)

And a pressure-sensitive adhesive layer pattern in the form of a strip, a figure, a honeycomb, and a combination thereof. The label according to claim 1, wherein the label is roll or folded. Repositioner blinkerless thermal label consisting of a laminate of materials with different coefficients of expansion. 4. The thermal head according to claim 3, wherein the expansion coefficient is a coefficient of thermal expansion, and is characterized by being capable of adding a bending force in the opposite direction of the roll shape when heat is applied to the paper.

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