KR101011974B1 - Non stick invoice label and method for manufacturing thereof - Google Patents

Abstract

PURPOSE: A non-adhesive invoice label and a manufacturing method thereof are provided to remarkably reduce the defective rate of the product by solving the defect factor of various adhesives used for the middle sheet. CONSTITUTION: A first coating layer(12) is formed by spreading the first coating solution on the bottom of a heat sensitive sheet(11). The first coating solution is made by softening the polyolefine resin using the emulsifying agent. A second coating layer(13) is formed by spreading the bottom of the first coating layer with the second coating solution.

Description

Non-sticky invoice label and its manufacturing method {NON STICK INVOICE LABEL AND METHOD FOR MANUFACTURING THEREOF}

The present invention relates to a non-sticky invoice label and a method of manufacturing the same, to simplify the process and reduce the production cost, and to a non-sticky invoice label and its manufacturing method for minimizing the defective rate.

In general, the adhesive-free invoice label has been proposed and used in a variety of types, "utility label" of Utility Model Registration No. 282650 filed with the Republic of Korea patent in the structure of release paper / adhesive layer / intermediate paper / starch layer / printing layer Labels for product delivery are known, but have high failure rates depending on the complexity of the process and the starch coating conditions due to the use of intermediate paper.

In addition, the method of partially removing the pressure-sensitive adhesive of the invoice fabric is known in the Patent Method No. 1995-968 filed in the Republic of Korea Patent Office, "How to remove the pressure-sensitive adhesive of the sticky fabric" It is known to partially print the white ink on the layer so that the portion where the white ink is printed loses the adhesive function and only the remaining portion functions as the adhesive to facilitate battery separation.

However, according to such a conventional method, another non-adhesive white ink is applied to the surface of the pressure-sensitive adhesive without using a non-adhesive composition to reduce the interfacial area between the intermediate paper and the battery to help peel the battery or to apply the white ink. In addition to the disadvantage that the heat-resistant of the pressure-sensitive adhesive should be kept high when the white ink is dried, the battery to be separated is partially maintained by the white ink. There is a risk of detachment by maintaining the adhesive state, in order to prevent this, the cut line should be additionally made by die cutting the separated part of the battery. In addition, it has the complexity of using a middle finger, and the surface of the intermediate paper from which the battery has been peeled off also retains the adhesiveness, thus failing to function as an adhesive-free invoice label.

In addition, the "non-adhesive label invoice" of Utility Model Registration No. 305874, filed with the Korean Intellectual Property Office, consists of Fuji peeled off, a battery constituting the invoice printing surface, and a middle finger coated with adhesive on the upper and lower surfaces between the Fuji and the battery. It laminated | stacked and comprised the battery via the non-sticky nonstick polymer layer formed in the layer form on the surface of the adhesive of the adhesive. In other words, the non-stick polymer layer is a non-adhesive polymer layer, which serves to bond the battery to the stop, and is not configured to be contaminated by foreign matters because it does not exhibit adhesive strength once the battery is removed from the stop. As a result, the thin film is passed through a thin nonstick polymer layer, thereby allowing the battery to maintain adhesion to the adhesive of the middle finger.

However, in the conventional non-adhesive label invoice, the thin film-shaped non-stick polymer layer is a high-temperature, high-pressure laminating process to allow the adhesive on the middle portion of the medium to pass through the micropores of the polymer layer to temporarily maintain adhesion with the battery. Although it does not, it is made by treating the surface of the pressure-sensitive adhesive layer applied to the top of the middle of the thin film layer that passes the microscopic pressure sensitive adhesive. In the initial battery peeling, there is a disadvantage in that the middle finger and the battery as the adhesive maintains the adhesive force, so it requires some excessive force, which causes the middle and upper limbs to be damaged. In addition, as the high temperature and high pressure laminating process is performed, related coating materials such as pressure-sensitive adhesives also need to be prepared as a special material that withstands high heat, resulting in an increase in manufacturing cost.

The present invention is to solve the problems with the conventional non-adhesive invoice label as described above, to avoid the use of intermediate paper, and to complete the non-adhesive invoice label only by coating the first and second coating liquid, thereby We want to achieve cost savings through simplification and elimination of intermediate papers.

According to an aspect of the present invention for achieving the above object, in the adhesive-free invoice label, is formed by applying a first coating liquid emulsified with a thermal paper and a polyolefin resin having a molecular weight of 800 ~ 1,300 with an emulsifier on the lower surface of the thermal paper A second coating layer formed by applying a first coating layer and latex containing 35 to 45% by weight of n-butylacrylate with respect to the total weight on the lower surface of the first coating layer as a second coating liquid, and the second coating layer It characterized in that it comprises a pressure-sensitive adhesive layer formed on the lower surface of the, and a release paper attached to the lower surface of the pressure-sensitive adhesive layer.

The first coating layer may include an emulsifier for emulsifying the polyolefin resin in the first coating solution, wherein the emulsifier is 3 to 8% by weight of polyoxyethylene stearyl ether based on the total weight of the first coating solution. It is characterized by that.

The first coating layer may include a stabilizer for emulsion stability of the polyolefin resin in the first coating solution, wherein the stabilizer is 3 to 8% by weight of cetyl alcohol based on the total weight of the first coating solution. do.

In addition, the first coating layer is characterized in that the first coating solution contains 1 to 3% by weight of a water-soluble thickener based on the total weight of the first coating solution.

In addition, the latex is emulsion polymerization of at least one acrylic monomer having a glass transition temperature range of -50 ~ -60 ℃ or at least one vinyl monomer having a glass transition temperature range of 95 ~ 105 ℃ with a sulfate-based emulsifier And a water-soluble thickener is mixed with the emulsion-polymerized product.

In addition, the sulfate-based emulsifier is characterized in that 0.5 to 2.0% by weight relative to the total weight of the latex.

In addition, the latex contains an initiator used in the polymerization, the initiator is characterized in that the persulfate of 0.3 to 1.0% by weight relative to the total weight of the latex.

According to another aspect of the present invention, in the method for manufacturing a non-adhesive invoice label, the step of forming a first coating layer by applying a first coating liquid emulsified polyolefin resin having an molecular weight of 800 ~ 1,300 with an emulsifier on the surface of the thermal paper; And applying a latex having 35% to 45% by weight of n-butyl acrylate to the surface of the first coating layer as a second coating liquid to form a second coating layer, and adhering to the surface of the second coating layer. Forming a layer.

In addition, the forming of the first coating layer may include melting the polyolefin resin and polyoxyethylene stearyl ether which is 3 to 8% by weight based on the total weight of the first coating liquid in the melt of the polyolefin resin. Melting and blending, distilled water is added dropwise to the product of melting and blending by the polyoxyethylene stearyl ether, stirred and cooled to room temperature, and cooling to the room temperature. Adding 3-8 wt% of cetyl alcohol to the total weight of the first coating solution and mixing the mixture; and adding 1-3 wt% of a water-soluble thickener with respect to the total weight of the first coating solution to the mixture of cetyl alcohol. Characterized in that it comprises a step of stirring.

In addition, the forming of the second coating layer may include: sulphating one or more acrylic monomers having a glass transition temperature range of -50 to -60 ° C or one or more vinyl monomers having a glass transition temperature range of 95 to 105 ° C. Emulsion polymerization with a system-based emulsifier, and the step of mixing the water-soluble thickener to the emulsion-polymerized product.

In addition, the step of emulsion polymerization, characterized in that the persulfate-based initiator is 0.3 to 1.0% by weight relative to the total weight of the latex.

In addition, the sulfate-based emulsifier is characterized in that 0.5 to 2.0% by weight relative to the total weight of the latex.

According to the present invention, a non-adhesive invoice label and a method of manufacturing the same can reduce production costs due to the simplification of the process and elimination of intermediate papers, and can reduce resource waste caused by the use of the intermediate papers.

In addition, it is possible to significantly reduce the defect rate of the product by completely solving the high adhesion temperature of the various adhesives according to the use of the intermediary paper, the defects caused by the drying conditions.

1 is a cross-sectional view showing a tacky invoice label in accordance with the present invention;
Figure 2 is a perspective view of a tack free invoice label according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, the embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art, the following examples may be modified in various other forms, the scope of the present invention Is not limited to the following examples.

1 is a cross-sectional view showing a tack free invoice label according to the present invention.

As shown in FIG. 1, the non-adhesive invoice label 10 according to the present invention is an invoice label which directly coats the first and second coating liquids on the thermal paper 11 so as to omit the intermediate paper, the thermal paper 11, The first coating layer 12, the second coating layer 13, the adhesive layer 14, and the release paper 15 are sequentially formed on the bottom surface of the thermal paper 11.

The thermal paper 11 is colored when a chemical substance is applied and heat, and the name, address and telephone number of the consignee and the consignee are printed on the upper surface thereof.

The first coating layer 12 is formed by applying a first coating solution obtained by emulsifying a polyolefin resin having a molecular weight of 800 to 1,300 with an emulsifier on the surface of the thermal paper 11, that is, the lower surface thereof. Here, when the molecular weight of the polyolefin resin is less than 800, it is impregnated into the thermal paper 11 in the oil phase after drying, the secondary coating solution is not settled, the printability of the thermal paper 11 is not shown. In addition, when the molecular weight exceeds 1,300, the polyolefin resin is too hot to be emulsified during the emulsification process.

The first coating layer 12 contains an emulsifier for the emulsification of the polyolefin resin in the first coating solution, the emulsifier is 3 to 8% by weight of polyoxyethylene stearyl ether (to the total weight of the first coating solution) Is preferred. Here, polyoxyethylene stearyl is less than 3% with respect to the total weight of the first coating liquid, the emulsification power is weak to make a large particle, the quality of the coated surface is reduced, while the total weight of the first coating liquid When it exceeds 8%, due to the influence of the excess emulsifier, a time-dependent change in the peel strength at the time of peeling the thermal paper 11 is brought.

The first coating layer 12 includes a stabilizer for emulsion stability of the polyolefin resin in the first coating liquid, it is preferred that the stabilizer is 3 to 8% by weight of cetyl alcohol relative to the total weight of the first coating liquid. Herein, when cetyl alcohol is less than 3% of the total weight of the first coating solution, the emulsion stability is weak, so that the aggregation of particles decreases the storage stability. On the other hand, when the content of the first coating solution exceeds 8%, the effect of the excess stabilizer This lowers the thermal performance of the thermal paper 11.

The first coating layer 12 may include a water-soluble thickener of 1 to 3% by weight based on the total weight of the first coating liquid in the first coating liquid.

The second coating layer 13 is formed by applying a latex containing 35 to 45% by weight of n-butyl acrylate relative to the total weight on the surface of the first coating layer 12, that is, the lower surface thereof as a second coating liquid. Here, if the n-butyl acrylate is less than 35% by weight relative to the total weight of the latex, there is a fear that the thermal paper 11 is detached during thermal printing, and if the n-butyl acrylate exceeds 45% by weight relative to the total weight of the latex, the adhesive force becomes stronger and the thermal paper ( 11) It requires more force than necessary for peeling.

In addition, the latex is emulsified by emulsion polymerization of at least one acrylic monomer having a glass transition temperature range of -50 ~ -60 ℃ or at least one vinyl monomer having a glass transition temperature range of 95 ~ 105 ℃ with a sulfate-based emulsifier, emulsified A water soluble thickener may be mixed in the polymerized product.

The sulfate-based emulsifier is preferably 0.5 to 2.0% by weight based on the total weight of the latex. Here, when the emulsion-based emulsifier is less than 0.5% by weight relative to the total weight of the latex, the stability of the particles is poor, and the polymerization is not performed smoothly. Poor polymerization stability due to viscosity increase.

The latex contains an initiator used in the polymerization, it is preferred that the initiator is persulfate of 0.3 to 1.0% by weight based on the total weight of the latex. Here, if the persulfate-based initiator is less than 0.3% by weight relative to the total weight of the latex, the reaction conversion rate is lowered, resulting in deterioration of quality due to unreacted monomers. Will increase.

The adhesive layer 14 is formed by applying an adhesive to the surface of the second coating layer 13, that is, the lower surface, and provides an adhesive force for attaching the thermal paper 11 to the object to be attached.

The release paper 15 adheres to the surface of the adhesive layer 14, that is, the bottom surface, so that the release paper 15 is easily separated from the adhesive layer 14, thereby facilitating the process of attaching the thermal paper 11 to the object to be attached as the adhesive layer 14. .

According to the non-adhesive invoice label 10 according to the present invention, as shown in FIG. 2, the adhesive layer 14 is attached to an attachment object such as a delivery box by removing the release paper 15 (shown in FIG. 1). Next, when the thermal paper 11 needs to be removed, when the thermal paper 11 is separated from the invoice label, the thermal paper 11 and the first coating layer 12 are separated from the second coating layer 13, and the separated surface has adhesive force. Doing so prevents foreign matter from sticking to the separation surface.

The operation and manufacturing method of the adhesive-free invoice label according to the present invention having such a configuration will be described in detail in the manufacturing method of the adhesive-free invoice label according to the present invention.

Method for producing a non-adhesive invoice label according to the present invention comprises the steps of forming a first coating layer 12 by applying a first coating solution emulsified polyolefin resin having a molecular weight of 800 ~ 1,300 with an emulsifier on the surface of the thermal paper (11), Applying to the surface of the first coating layer 12 an acrylic latex having 35% to 45% by weight of n-butylacrylate as a second coating liquid to form a second coating layer 13, and a second coating layer And forming an adhesive layer 14 on the surface of (13).

The step of forming the first coating layer may include melting the polyolefin resin to form the first coating liquid, and polyoxyethyl resteraryl which is 3 to 8% by weight based on the total weight of the first coating liquid in the melt of the polyolefin resin. Melting and blending the ether, dropping distilled water into the mixture of polyoxyethylesteraryl ether, stirring and cooling to room temperature, and cooling to room temperature before the first coating solution is transferred to the resultant. Adding 3 to 8% by weight of cetyl alcohol with respect to the weight, and mixing; and adding and mixing 1 to 3% by weight of a water-soluble thickener with respect to the total weight of the first coating solution in the mixture of cetyl alcohol. have.

The polyolefin has a molecular weight of 800 ~ 1,300, if the molecular weight is less than 800 is impregnated in the thermal paper 11 in the oil after drying, the second coating solution is not settled, the printability of the thermal paper (11) does not appear, the molecular weight is If it exceeds 1,300, the hot melt viscosity during the emulsification process is too high to emulsify.

In preparing the first coating solution, the polyoxyethylene stearyl ether is preferably 3 to 8% of the total weight of the first coating liquid as an emulsifier, and the polyoxyethyl stearyl ether is 3 to the total weight of the first coating liquid. If it is less than%, the emulsifying power is weak to make huge particles, and the quality of the coated surface is lowered. On the other hand, if it exceeds 8% with respect to the total weight of the first coating liquid, when the thermal paper 11 is peeled off due to the effect of the excess emulsifier. This will cause a change in peel strength over time.

In the preparation of the first coating solution, it is preferable that cetyl alcohol is 3 to 8% by weight based on the total weight of the first coating solution for emulsification stability of the first coating solution. When the stability is weak, the aggregates of particles impair the storage stability. On the other hand, when the amount exceeds 8% with respect to the total weight of the first coating solution, the thermal performance of the thermal paper 11 is lowered due to the influence of the excess stabilizer.

The first coating solution contains a water-soluble thickener to improve storage stability and coating processability.

Hereinafter, the first coating liquid of the manufacturing method of the non-adhesive invoice label according to the present invention will be described through Examples, which is not limited to the following Examples. Here,% by weight is% by weight based on the total weight of the coating liquid.

In the case of Example 1, 30% by weight of polyolefin was taken into the reactor and completely melted while maintaining at 135 ° C, followed by 8% by weight of polyoxyethylene stearyl ether to be melt blended evenly. 15% by weight of distilled water was added dropwise thereto in 2 hours, and then 42% by weight of distilled water was added dropwise in 1 hour. Then, stirring was continued for 30 minutes, and then cooled to 10 ° C or more per minute. After cooling, the resultant product was cooled to room temperature, and then 3 wt% of cetyl alcohol was uniformly blended, 2 wt% of a water-soluble thickener was added thereto, and then stirred in a stable state to complete the first coating solution.

In the case of Examples 2 to 10, the same procedure as in Example 1 was carried out, but the first coating solution was completed by changing the molecular weight of the polyolefin and the addition amount of the emulsifier, stabilizer, water-soluble thickener and the like as shown in Table 1 below.

In Comparative Example 1, a heat curable silicone release agent used as a general release coating solution was used as the first coating solution.

For Comparative Example 2, a heat-drying silicone release agent used as a general release coating solution was used as the primary coating solution.

Distilled water Polyolefin resin Emulsifier stabilizator Mercury
Thickener Thermal performance Application property Peel strength
(gf) label
Breakaway Save
stability Example 1 57 30 8 3 2 Good ◎ 90 none Good Example 2 62 30 3 3 2 Good ○ 130 none Good Example 3 60 30 4 4 2 Good ○ 120 none Good Example 4 61 30 5 4 2 Good ◎ 120 none Good Example 5 59 30 6 5 2 Good ◎ 120 none Good Example 6 58 30 7 5 2 Good ◎ 100 none Good Example 7 56 30 8 6 2 Good ◎ 100 none Good Example 8 61 30 3 6 2 Good ○ 120 none Good Example 9 59 30 4 7 2 Good △ 120 none Good Example 10 57 30 5 8 2 Good ◎ 110 none Good Comparative Example 1 - - - - - Bad × 20 has exist - Comparative Example 2 - - - - - Good × 20 has exist -

As shown in Table 1, in Examples 1 to 10, while the thermal paper 11 satisfies the quality required as the invoice label, the thermal performance, the coating property, the peeling strength, the label separation, the storage stability, and the like, were compared. It can be seen that in case 2, the invoice label did not meet the required quality.

The forming of the second coating layer may include one or more acrylic monomers having a glass transition temperature range of -50 to -60 ° C or one or more glass transition temperature ranges of 95 to 105 ° C for the preparation of the second coating solution. It can be achieved by a latex production method using a styrene-butyl-acrylic copolymer comprising a step of emulsion polymerization of a vinyl monomer with a sulfate-based emulsifier, and a step of admixing a water-soluble thickener in the emulsion-polymerized product and a coating agent therefrom. .

The second coating liquid of the present invention is n-butyl acrylate used for the purpose of giving the flexibility to withstand the bending or warping of the label when the thermal printing on the thermal paper 11 with respect to the total weight of the latex, for example acrylic latex It is preferable to contain 35 to 45% by weight, and if the content of n-butyl acrylate is less than 35% by weight relative to the total weight of the acrylic latex, there is a fear of detachment of the thermal paper 11 during thermal printing, and the total weight of the latex If it exceeds 45% by weight, the adhesive force becomes stronger, and more than necessary force is required during peeling of the thermal paper 11.

The emulsifier used for emulsion stability during polymerization of the second coating liquid may be optionally used among one or two sulfate anionic emulsifiers, and preferably contains 0.5 to 2.0% by weight based on the total weight of the acrylic latex. Is less than 0.5% by weight with respect to the total weight of the acrylic latex, the stability of the particles is poor, and the polymerization is not performed smoothly; if it exceeds 2.0% by weight with respect to the total weight of the acrylic latex, the particle size is excessively reduced to increase the viscosity during polymerization. Poor polymerization stability.

The initiator used in the polymerization of the second coating solution may use a persulfate system, and preferably contains 0.3 to 1.0% by weight based on the total weight of the acrylic latex, and if the initiator of the persulfate system is 0.3 to the total weight of the acrylic latex If the content is less than% by weight, the reaction conversion rate is lowered, resulting in deterioration due to the unreacted monomer. When the content is more than 1.0% by weight based on the total weight of the acrylic latex, the molecular weight decreases, thereby increasing adhesion.

Hereinafter, the second coating liquid of the manufacturing method of the non-adhesive invoice label according to the present invention will be described through Examples, which is not limited to the following Examples. Here,% by weight is% by weight based on the total weight of the coating liquid.

In the case of Example 1, 39.024% by weight of distilled water and 0.5% by weight of ammonium persulfate initiator relative to the total weight of acryl latex are maintained in the reactor at 80 ° C. In a beaker, distilled water was added to 11.707% by weight relative to the total weight of the acrylic latex, 0.5% by weight sodium lauryl sulfate emulsifier to the n-butylacrylate monomer, and 39.6 of the total weight of the n-butylacrylate monomer to the acrylic latex solids. Take the weight% and stir to make a stable pre-emulsion to put into the reactor and polymerize for 15 minutes at 80 ℃. After the first seed polymerization, 0.5% by weight of sodium lauryl sulfate emulsifier was added to the styrene monomer and stirred for 10 minutes, and then the styrene monomer was diluted with 59.4% by weight of the total weight and 10% of ammonium persulfate initiator relative to the acrylic latex solid. 0.5% by weight of each dropping funnel was polymerized dropwise for 3 hours using each dropping funnel. After polymerization for 3 hours, the mixture was aged for 2 hours, and then cooled.

In Examples 2 to 5, the same procedure as in Example 1 described above was performed, but the addition amount of the styrene monomer, the n-butyl acrylate monomer and the emulsifier, and the initiator was changed as shown in Table 2 to complete the second coating solution. It was.

n-butylacrylate monomer Styrene monomer Initiator Emulsifier Glass transition temperature (캜) Molecular Weight
(Mw) Peel strength
(gf) Label exit Example 1 39.6 59.4 0.5 0.5 18.1 ℃ 420,000 100 none Example 2 35.0 63.7 0.3 1.0 25.5 ℃ 480,000 110 none Example 3 37.0 60.5 0.5 2.0 21.4 ℃ 380,000 85 none Example 4 42.0 56.7 0.8 0.5 14.1 ℃ 340,000 80 none Example 5 45.0 53.0 1.0 1.0 10.0 ℃ 330,000 130 none

As shown in Table 2, according to Examples 1 to 5, it can be seen that the peeling strength and label detachment by the second coating liquid have a desired quality.

As described above, the adhesive-free invoice label and the manufacturing method thereof according to the present invention are described with reference to the accompanying drawings, but various modifications and changes can be made without departing from the technical spirit of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the claims below and equivalents thereof.

11: thermal paper
12: first coating layer
13: second coating layer
14: adhesive layer
15: release paper

Claims (12)

In the adhesive-free invoice label 10,
Thermal paper 11,
A first coating layer 12 formed by applying a first coating solution obtained by emulsifying a polyolefin resin having a molecular weight of 800 to 1,300 with an emulsifier on a lower surface of the thermal paper;
A second coating layer 13 formed by applying a latex containing 35 to 45% by weight of n-butyl acrylate as a second coating liquid on the lower surface of the first coating layer;
An adhesive layer 14 formed on a lower surface of the second coating layer;
Release paper 15 attached to the lower surface of the adhesive layer
Adhesive-free invoice label comprising a.
The method of claim 1, wherein the first coating layer,
A non-tacky invoice comprising an emulsifier for emulsifying the polyolefin resin in the first coating liquid, wherein the emulsifier is 3 to 8% by weight of polyoxyethylene stearyl ether based on the total weight of the first coating liquid. label.
The method of claim 1 or 2, wherein the first coating layer,
The first coating liquid contains a stabilizer for the emulsion stability of the polyolefin resin, wherein the stabilizer is 3 to 8% by weight of cetyl alcohol with respect to the total weight of the first coating liquid, adhesive-free invoice label.
The method of claim 1 or 2, wherein the first coating layer,
Adhesive-free invoice label, characterized in that the first coating solution contains 1 to 3% by weight of a water-soluble thickener based on the total weight of the first coating solution.
The method of claim 1, wherein the latex,
At least one acrylic monomer having a glass transition temperature range of -50 to -60 ° C or at least one vinyl monomer having a glass transition temperature range of 95 to 105 ° C is emulsion-polymerized with a sulfate-based emulsifier, A tack free invoice label characterized in that a water soluble thickener is mixed.
The method of claim 5, wherein the sulfate-based emulsifiers,
Adhesive-free invoice label, characterized in that 0.5 to 2.0% by weight relative to the total weight of the latex.
The method of claim 5, wherein the latex contains an initiator used in the polymerization,
Adhesive-free invoice label, characterized in that the initiator is 0.3 to 1.0% by weight persulfate based on the total weight of the latex.
In the method of manufacturing the adhesive-free invoice label,
Forming a first coating layer by applying a first coating solution obtained by emulsifying a polyolefin resin having a molecular weight of 800 to 1,300 with an emulsifier on the surface of the thermal paper;
Forming a second coating layer by applying latex having 35% to 45% by weight of n-butyl acrylate to the surface of the first coating layer as a second coating liquid;
Forming an adhesive layer on a surface of the second coating layer
Method of producing a non-adhesive invoice label comprising a.
The method of claim 8, wherein the forming of the first coating layer comprises:
Melting the polyolefin resin,
Melting and blending 3-8 wt% of polyoxyethylene stearyl ether with respect to the total weight of the first coating solution in the melt of the polyolefin resin;
Distilled water is added dropwise to the resulting product of melting and blending with the polyoxyethylene stearyl ether, followed by stirring and cooling to room temperature,
And mixing 3-8 wt% of cetyl alcohol with respect to the total weight of the first coating solution to the resultant cooled by the step of cooling to room temperature;
Adding 1 to 3% by weight of a water-soluble thickener based on the total weight of the first coating solution and stirring the mixture of cetyl alcohol.
Method of producing a non-adhesive invoice label comprising a.
The method of claim 8, wherein the forming of the second coating layer comprises:
Emulsion-polymerizing at least one acrylic monomer having a glass transition temperature range of -50 to -60 ° C or at least one vinyl monomer having a glass transition temperature range of 95 to 105 ° C with a sulfate-based emulsifier,
Mixing a water-soluble thickener with the emulsion-polymerized product
Method of producing a non-adhesive invoice label comprising a.
The method of claim 10, wherein the step of emulsion polymerization,
Method of producing a adhesive-free invoice label characterized in that the persulfate-based initiator is mixed with 0.3 to 1.0% by weight relative to the total weight of the latex.
The method of claim 10, wherein the sulfate-based emulsifiers,
Method of producing a adhesive-free invoice label, characterized in that 0.5 to 2.0% by weight relative to the total weight of the latex.

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