KR101800809B1

KR101800809B1 - Print adhesive film for eco-solvented ink and manufacturing method for the same

Info

Publication number: KR101800809B1
Application number: KR1020150183253A
Authority: KR
Inventors: 강상구; 이강엽; 김경해; 한동희
Original assignee: 주식회사 에스케이씨에스
Priority date: 2015-12-21
Filing date: 2015-12-21
Publication date: 2017-12-20
Also published as: KR20170074123A

Abstract

The present invention relates to a printing and pressure-sensitive adhesive film for eco-solvent ink, which is excellent in printing suitability by increasing the absorption and fixability of eco-solvent ink, and prevents contamination by blocking the transfer of the release agent to the ink absorbing layer will be.
The printed and pressure-sensitive adhesive film for eco-solvent ink according to the present invention comprises a non-PVC based substrate layer as a base; A primer layer formed on an upper surface of the non-PVC base layer; An ink absorbing layer formed on an upper surface of the primer layer; An adhesive layer formed on a lower surface of the non-PVC based substrate layer; And a release liner formed on the lower surface of the adhesive layer.

Description

TECHNICAL FIELD The present invention relates to a printing adhesive film for eco-solvent ink, and a printing adhesive film for eco-solvent ink,

The present invention relates to a printing and pressure-sensitive adhesive film for eco-solvented ink, and more particularly, to a printing and pressure-sensitive adhesive film for eco-solvented ink, A printing adhesive film for solvent ink, and a process for producing the same.

In general, PVC or PVC printed adhesive sheets have a high market share in the market of advertising materials and interior sheets to be installed indoors and outdoors. PVC printing adhesive sheet is relatively simple in processing and production process, it is economical in production cost, has excellent printing quality, has some physical characteristics such as durability and weatherability, and has been widely used in advertisement and interior market for a long time.

However, plasticizers and stabilizers, which are essential for the processing of such PVC into sheets, contain phthalates and heavy metals, which can adversely affect the human body, and are currently limited in use in some European and US states , Especially in places where infants and children are active, and where environmental characteristics are required.

In order to meet these market changes, we are producing eco-friendly products such as non-phthalate plasticizers and eco-friendly stabilizers in PVC processing. However, in some advanced countries, environment-friendly standards are more strictly defined, The need for non-PVC based resin films is emerging due to the environmental problems that arise during processing.

In general, inks used in the solvent ink jet market are divided into strong solvents and eco-solvent inks, depending on the types of organic solvents contained in the ink, and mainly include organic solvents such as ketones and acetate When using strong solvent inks, solvents that volatilize from the ink during printing can contaminate the environment and pose a health hazard to the output workers. Therefore, there is a problem in that it is difficult to use the output product indoors due to the special smell of the solvent after the output, which requires special management such as a ventilation facility in the working environment.

In order to solve such a problem, an eco-friendly eco-solvent ink has recently been developed, and the use of environmentally friendly inks, in which the output environment and the smell of output after the printing are substantially eliminated, is rapidly increasing. However, in the case of eco-solvent ink, there is a disadvantage that the penetration of the ink is low and it takes a long time to dry completely after the ink is printed.

In addition, a release liner to be attached as a protective substrate of a conventional printing adhesive film is generally produced by coating a silicone-based releasing agent on a paper or film. The silicone-based releasing agent has a significant physical property to moisture, Resulting in deterioration of the print quality, which is a disadvantage of causing printing defects.

Korean Patent Publication No. 10-2005-0056914 Korean Patent Registration No. 10-0660936 Korean Patent Registration No. 10-0341291

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in order to solve the problems of the prior art, and it is an object of the present invention to provide an eco-solvent- And a method for producing the same.

Another object of the present invention is to provide a printed and pressure-sensitive adhesive film for eco-solvent ink, which is excellent in workability due to the ease of adhesion and re-peeling of the pressure-sensitive adhesive layer and prevents contamination by blocking the transfer of the release agent to the ink- .

The present invention also provides a printing adhesive film for an eco-solvent ink and a method of manufacturing the same, which can shorten the time until the ink is completely dried after ink output by increasing the absorption and drying speed of the ink during printing using the eco-solvent ink, There is a purpose.

The printed pressure-sensitive adhesive film for eco-solvent ink according to an embodiment of the present invention is a non-PVC based substrate layer of a transparent or white polyimide (PI) film having a thickness of 50 to 200 탆; A primer layer formed on an upper surface of the non-PVC base layer; A primer layer formed on the upper surface of the primer layer and comprising 50 to 75 wt% of a polyester resin, 15 to 25 wt% of an adhesive vinyl resin, 7.5 to 15.5 wt% of an adsorbing silica, 1 to 5 wt% of a cationic or anionic additive resin, And at least one selected from the group consisting of an Ally-based salt, a urethane-based salt, a polyethyleneamine salt, a polyvinylamine salt, and an acrylamide-based copolymer salt in a composition including a mixed solvent An ink absorption layer for an eco-solvent ink in which a cationic or anionic resin and a porous adsorption filler are mixed; A composition comprising 20.7 to 55.7% by weight of a polyurethane adhesive resin, 1.5 to 7.5% by weight of an isocyanate curing agent, 0.2 to 1.0% by weight of a curing accelerator, 0.5 to 3.5% by weight of a leveling agent and 15.5 to 35.5% by weight of a mixed solvent, An adhesive layer formed on the lower surface of the PVC base layer and having a plurality of grooves formed on the surface thereof; And a release liner formed on the lower surface of the pressure-sensitive adhesive layer and made of a selected one of polyolefin (PO) resin, high density polyethylene, low density polyethylene, ultra low density polyethylene and polypropylene or a mixture thereof and having embossed on its surface, The liner comprises a base layer made of a paper or plastic film having a basis weight of 50 to 150 g / cm < 2 > and a base layer made of a polyolefin resin, high density polyethylene, low density polyethylene, ultra low density polyethylene and polypropylene, A mixture of 60 to 80% by weight of cyclohexane, 5.5 to 15.5% by weight of polyethylene wax, 4.5 to 10.5% by weight of paraffin wax, an antioxidant of 1.5 to 15% by weight, 3.5% by weight, defoaming agent and 0.5-3.5% by weight leveling agent.

In addition, a method for producing a printed and pressure-sensitive adhesive film for eco-solvent ink according to an embodiment of the present invention is characterized in that a transparent or white plastic film made of one selected from the group consisting of polyimide (PI), polyethylene and polypropylene, Based base layer from an unwinder part; A primer layer is coated on an upper surface of the non-PVC base layer supplied from the uncoiler portion in a coating head, and then 50 to 75% by weight of a polyester resin and 15 to 25% by weight of an adhesive vinyl resin are coated on the top surface of the primer layer, An alkali-soluble salt, an alkali-soluble salt, an antioxidant, an antioxidant, an antioxidant, an antioxidant, an antioxidant, an antioxidant, an antioxidant, an antioxidant, An ink absorbing layer for an eco-solvent ink in which a cationic or anionic resin containing at least one selected from a urethane group-containing salt, a polyethyleneamine salt, a polyvinylamine salt and an acrylamide-based copolymer salt is mixed with an adhesive vinyl resin and a porous adsorptive filler ; Based base layer, 20.7 to 55.7% by weight of a polyurethane adhesive resin, 1.5 to 7.5% by weight of an isocyanate curing agent, 0.2 to 1.0% by weight of a curing accelerator, 0.5 to 3.5% by weight of a leveling agent, 15.5 to 35.5% Coating a pressure-sensitive adhesive layer formed on a lower surface of the non-PVC based substrate with a plurality of grooves formed in a lattice pattern on the surface thereof to form a film; Heating and drying the formed film in a thermal drying unit; And adhering a release liner to the adhesive layer of the heated and dried film in a laminating portion, wherein the release liner comprises a base layer of a paper or plastic film having a basis weight of 50 to 150 g / cm < 2 & An emboss layer formed on the upper surface of the emboss layer and made of at least one of a polyolefin resin, a high density polyethylene, a low density polyethylene, an ultra low density polyethylene and a polypropylene, or a mixture thereof; and a Cyclo Hexane 60 to 80 , A release layer comprising 5.5 to 15.5% by weight of polyethylene (PE) wax, 4.5 to 10.5% by weight of paraffin wax, 1.5 to 3.5% by weight of an antioxidant, 0.5 to 3.5% by weight of a defoaming agent and a leveling agent.

The present invention shows excellent printability and colorability of Eco Solvent Ink that protects not only the human body but also the environment without using a strong solvent solvent which is harmful to the human body and has a bad smell, and since the base film also uses non-PVC system, Is advantageous.

According to the present invention, by using a release liner formed by coating a release wax on a lower surface of a substrate sheet as a protective film of an adhesive layer, it is resistant to moisture and blocks the transfer of the release agent to the ink absorption layer, Can be blocked.

In addition, according to the present invention, the ink absorption and drying speed can be improved during printing using the eco-solvent ink, and the drying time after ink output can be greatly shortened.

1 is a cross-sectional view of a printed and pressure-sensitive adhesive film for eco-solvent ink according to an embodiment of the present invention,
2 is a cross-sectional view of a release liner formed on a printing adhesive film for an eco-solvent ink according to an embodiment of the present invention.
FIG. 3 is a process diagram of a process for producing a printed and pressure-sensitive adhesive film for an eco-solvent ink according to an embodiment of the present invention,
4 is a view showing a process of forming an embossed layer on a substrate layer of a release liner adhered to a printing adhesive film for an eco-solvent ink according to an embodiment of the present invention;
5 is a view illustrating a manufacturing process for forming a release liner by forming a release layer on the upper surface of the embossed layer according to the embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view of a printed and pressure-sensitive adhesive film for eco-solvent ink according to an embodiment of the present invention.

Referring to FIG. 1, a printing adhesive film (hereinafter referred to as an adhesive film) 100 for an eco-solvent ink according to the present invention includes a primer layer 130 formed on an upper surface of a non-PVC base material layer 110, An ink absorbing layer 150 for the eco-solvent ink is formed on the upper surface of the ink absorbing layer 130. An adhesive layer 170 is formed on the lower surface of the non-PVC base material layer 110 and a release liner 190 is attached to the adhesive layer 170.

The non-PVC based substrate layer 110 is preferably formed of a transparent or hiding white color, and can be selectively used depending on the end use. The non-PVC base material layer 110 is not particularly limited, but a thickness of 50 to 200 占 퐉 is suitable. When the thickness is less than 50 탆, it does not have a sufficient supporting force, and since the hardness is low, the self-durability of being damaged by folding or the like is inferior. When the thickness exceeds 200 탆, the workability in printing operation by the printer may be poor, The manufacturing cost is increased.

In addition, the non-PVC based substrate layer 110 is more safe than conventional PVC containing dioxin and is environmentally friendly because it does not use a phthalate plasticizer and has high transparency A plastic film or a plastic film colored with white which is easy to increase hiding power is used. Such a plastic film may be a film made of one selected from the group consisting of polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), polyimide (PI), low density or high density polyethylene and polypropylene, Can be used.

The primer layer 130 is applied to the upper surface of the non-PVC base material layer 110. The primer layer 130 is formed between the non-PVC base layer 110 and the ink absorbing layer 150, which will be described later, and enhances the adhesion between the two layers. If there is no primer layer 130, if heat is applied due to sunlight or sunlight from the outside, the ink absorbing layer 150 ) Is peeled off. Accordingly, the primer layer 130 of the present invention prevents the peeling phenomenon between the non-PVC base layer 110 and the ink absorbing layer 150 beforehand and strengthens the adherence of the primer layer 130 to the printed adhesive film for eco solvent ink of the present invention Durability and weather resistance. As the material used for the primer layer 130, an acrylic resin, a urethane resin or a urethane acrylate copolymer resin may be selectively used. In order to improve adhesion between the two layers 110 and 150, an adhesion promoter or the like may be added have.

The ink absorbing layer 150 for the eco-solvent ink is formed on the top surface of the primer layer 130. The ink absorbing layer 150 is made of a polyester resin as a main material, and a cationic or anionic resin is added thereto in order to enhance adhesion of the echo-solvent ink. In another embodiment, an adhesive vinyl resin or a porous adsorption filler may be added to the polyester resin as the main material and mixed.

Specifically, such a composition includes 50 to 75% by weight of a polyester resin, 15 to 25% by weight of an adhesive vinyl resin, 7.5 to 15.5% by weight of an adsorbing silica, 1 to 5% by weight of a cationic or anionic additive resin, By weight, a UV absorber 0.1 to 1.5% by weight, and a mixed solvent amount. At this time, the glass transition temperature (Tg) of the polyester resin is suitably in the range of 10 to 30 DEG C, and if it is out of the above range, the coloring degree of the eco-solvent ink is poor and the ink bleedability is badly affected. In addition, by adding a cationic or anionic additive resin, it is possible to realize excellent ink absorption power and coloring degree. As the cationic additive resin, amide type tetravalent ammonium salt, ally type salt, urethane type salt, polyethylene amine salt, polyvinylamine salt, acrylamide type copolymer salt and the like can be used. It is preferable to use a surfactant having a matrix. In the case of a mixed solvent, it is preferable to inject the ink absorbing layer 150 so as to have a viscosity of 100 to 3000 cps. In the present embodiment, the ink absorbing layer 150 is not particularly limited, but its thickness is suitably about 10 to 60 mu m. If the thickness of the coating is thin, it is difficult to completely absorb and adhere the ink, and in a case where the coating thickness is too large, it is difficult to work, the workability is low, and the manufacturing cost is increased.

As described above, in the present invention, by adding a cationic or anionic resin to a mixed composition of a polyester resin, an adhesive vinyl resin and a porous adsorbent filler, the eco-solvent ink can have excellent printability and colorability, Absorbing and drying speed, thereby greatly shortening the ink drying time.

Conventionally, an ink liquid that is sprayed and printed by inkjet printing usually contains a solvent. Acetate, ketone, ether, etc. are used in a strong toxic and odorous liquor In long working time, the user is not only harmful to the human body such as dizziness and vomiting, but also greatly reduces the working efficiency and causes environmental problems. In recent years, eco solvent ink jet inks have been developed, and the use of environmentally friendly inks, in which the output environment and the smell of output after output are hardly observed, is increasing rapidly. However, the eco-solvent ink has a drawback in that it takes a long time for the material to penetrate after drying and the ink penetration is low. Accordingly, the present invention is characterized in that when printed on an ink absorbing layer using eco solvent ink as a printing adhesive film for eco-solvent ink, the ink exhibits high adsorptivity and fixability and shows excellent coloring of eco solvent ink.

The adhesive layer 170 is formed on the lower surface of the non-PVC base material layer 110. The adhesive layer 170 may be an acrylic, polyurethane or silicone adhesive resin. Although not particularly limited, in the present invention, the adhesive layer 170 is composed of 20.7 to 55.7% by weight of a polyurethane adhesive resin, 1.5 to 7.5% by weight of an isocyanate curing agent, 0.2 to 1.0% by weight of a curing accelerator, 0.5 to 3.5% And 15.5 to 35.5% by weight of a solvent. The adhesive layer 170 is applied to the lower surface of the non-PVC base material layer 110 and then heated and dried under a certain temperature to be matured. The thickness of the adhesive layer 170 is 10 to 50 占 퐉. When the thickness is less than 10 占 퐉, the adhesive force deteriorates and the adhesive force may be detached from the construction site or the adhered surface, The working conditions become difficult, the workability is lowered, and the unit price is increased.

A release liner 190 is formed on the lower surface of the adhesive layer 170. The release liner 190 uses a pressure-sensitive adhesive layer and a release type substrate having a wax release coating to impart releasability thereto. At this time, the release type substrate having the wax releasing coating has a residual adhesion rate of 95% or more of the pressure-sensitive adhesive layer and does not cause transfer of the releasing agent, thereby preventing the printing surface layer from being contaminated. Thus, the release liner 190 adheres to the adhesive layer 170, is resistant to moisture, and has no transition phenomenon, so that the printing failure phenomenon due to the release transition can be fundamentally blocked. In this embodiment, the release liner 190 is attached to facilitate the maintenance, storage, and handling of the adhesive layer. In particular, the release liner 190 serves as a protective substrate for preventing contamination by blocking the transfer of the release agent to the ink absorbing layer 150 . In this embodiment, the release liner 190 may be made of a polyolefin (PO) resin having high chemical stability, and one selected from high density polyethylene, low density polyethylene, ultra low density polyethylene, polypropylene, or a mixture thereof may also be used.

Meanwhile, in another embodiment of the present invention, a plurality of grooves are formed on the surface of the adhesive layer 170 to facilitate removal of air bubbles that may occur during construction. These grooves may be formed in a lattice pattern. A release liner 190 having an embossed shape is used to form a plurality of grooves on the surface of the adhesive layer 170 for easy bubble removal. As described above, in the present invention, the release liner 190 in which the embossing is formed so as to form the grooved lattice on the surface of the adhesive layer 170 is used, and in particular, to prevent the release agent from transferring to the pressure- The composition is coated.

2 is a cross-sectional view of a release liner formed on a print adhesive film for an eco-solvent ink according to an embodiment of the present invention.

2, the release liner 190 according to the present invention includes an embossed layer 192 formed on the upper surface of the base layer 191 and a release layer 193 formed on the upper surface of the embossed layer 192.

The base layer 191 of the release liner 190 is formed of a PET film or paper according to the end use application, and is preferably formed of a white paper or plastic film having a basis weight of 50 to 150 g / cm < 2 & Do. In this case, when the basis weight is less than 50 g, the release liner 190 does not have a sufficient supporting force and is damaged or broken when peeled off from the adhesive layer 170, thereby decreasing the efficiency of the construction. It becomes heavy and the working unit price rises.

A polyolefin (PO) resin having high chemical stability is used as the emboss layer 192, and at least one of high density polyethylene, low density polyethylene, ultra low density polyethylene, polypropylene, or a mixture thereof may be used.

The releasing layer 193 contains 60 to 80% by weight of cyclohexane, 5.5 to 15.5% by weight of polyethylene (PE) wax, 4.5 to 10.5% by weight of paraffin wax, 1.5 to 3.5% by weight of an antioxidant, To 3.5% by weight of the composition. This composition is applied to the top surface of the embossed base layer 191 (paper or plastic film) and heated and dried at a constant temperature.

3 is a view illustrating a manufacturing process of a printed and pressure-sensitive adhesive film for eco-solvent ink according to an embodiment of the present invention.

3, a non-PVC base material layer 110 is supplied from the unwinder portion 10 to the coating head 11 during the production of the printing adhesive film 100 for an eco-solvent ink according to the present invention, The primer layer 130 and the ink absorbing layer 150 are sequentially coated on the upper surface of the non-PVC base material layer 110 and the adhesive layer 170 is coated thereon. Preferably, the primer layer 130, the ink absorbing layer 150, and the adhesive layer 170 may be coated in this order. The coating head 11 is coated with a primer layer 130, a coating apparatus (not shown) for coating the ink absorbing layer 150, and an adhesive layer 170, (Not shown) are provided for coating the substrate.

When the operation of coating the primer layer 130 and the ink absorbing layer 150 on the upper surface of the non-PVC base layer 110 and the operation of coating the adhesive layer 170 on the lower surface are completed, (12) so that the heating and drying operations are simultaneously performed. When the heating and drying operation is completed, an operation of attaching the release liner 190 to the adhesive layer 170 in the laminating unit 13 proceeds. The release liner 190 is attached to the lower surface of the adhesive layer 170 in the laminating unit 14 and the release liner 190 is attached to the lower surface of the adhesive layer 170, 15) so that the product is wound. All processes are completed.

For example, the ink absorbing layer 150 may be a comma coating or a slot die coating, the primer layer 130 may be a mayer- bar coating and the adhesive layer 170 are preferably implemented by a comma coating, a slot die coating or a micro-gravure coating.

At this time, the ink absorbing layer 150 is coated on the top surface of the primer coated non-PVC base layer 110 and is transported at a rate of 20 to 40 m / min in the heat drying furnace 12, Heated and dried. At this time, it is preferable that the thickness of the ink absorbing layer 150 after heating and drying is 10 to 60 占 퐉. More preferably, the ink absorbing layer 150 is coated to have a thickness of 15 to 40 탆. If the thickness of the ink absorbing layer 150 is less than 10 탆, the ink absorbing ability may deteriorate and the ink may spread. If the thickness exceeds 60 탆, the sharpness of the image may deteriorate and the adhering force may be deteriorated due to the weakened coating. If the heating / drying temperature is lower than 100 ° C, the drying is difficult and the working speed is slowed down. When the heating / drying temperature exceeds 180 ° C, yellowing due to overheating and deformation of the PP film occur. In particular, the heating and drying temperatures may be varied depending on the conditions of the respective layers. Preferably, the temperature of the primer layer 130 is in the range of 50 to 120 ° C, and the temperature of the adhesive layer 170 is in the range of 80 to 150 ° C.

FIG. 4 is a process diagram for forming an embossed layer on a substrate layer of a release liner adhered to a printing adhesive film for an eco-solvent ink according to an embodiment of the present invention.

4, in the embodiment of the present invention, a film for the base layer 191 is supplied from an unwinder 20 to form an embossed layer 192 on the base layer 191 of the release liner 190 . As the base layer 191, for example, paper or a PET film can be used. Thereafter, the base layer 191 is supplied with the resin for forming the embossed layer 192 on the upper surface thereof by the resin supply portion 22 in a state of being cooled while passing through the first cooling drum 21. The embossing layer 192 is formed on the upper surface of the substrate layer 191 and then proceeds to the second cooling drum 24 through the forming drum 23. The resin of the embossed layer 192 may be a polyolefin (PO) resin, high density polyethylene, low density polyethylene, ultra low density polyethylene, polypropylene, or a mixture thereof.

At this time, it is important that a plurality of protrusions (not shown) are formed on the surface of the forming drum 23. That is, since a plurality of protrusions are formed on the surface of the forming drum 23, a plurality of grooves are formed on the surface of the embossing layer 192 while passing through the forming drum 23. These plurality of grooves are for removing bubbles generated inside the embossed layer 192 when the resin for the emboss layer 192 is supplied to the upper surface of the base layer 191. Accordingly, a plurality of grooves are formed in the embossing layer 192 while passing through the forming drum 12, thereby removing bubbles generated inside the embossing layer 192. In this embodiment, these grooves may be formed in various lattice pattern shapes. Thereafter, after passing through the second cooling drum 24, the embossing layer 192 is aged by passing through a plurality of aging drums 25 having an appropriate surface temperature, and then is wound by the winder 26. Through this process, an emboss layer 192 having a plurality of grooves formed on the upper surface of the base layer 191 of the release liner 190 is stably formed.

5 is a view illustrating a manufacturing process of forming a release liner by forming a release layer on the upper surface of the embossed layer according to an embodiment of the present invention.

Referring to FIG. 5, in the production of the release liner 190 according to the present invention, the base layer 191 having the embossed layer 192 formed thereon is supplied to the upper surface of the unwinder portion 30 as shown in FIG. The supplied support material layer 191 and the embossed layer 192 are conveyed to the coating portion 32 through the plurality of castrols 31. In the coating portion 32, a release layer 193 is coated on the upper surface of the emboss layer 192. When the coating of the release layer 193 is completed in this manner, it is transferred to the heat drying unit 33 to be dried and cured. Thereafter, the process is completed by winding the mold release rider 190 finally completed in the winder 35 via the laminating unit 34.

At this time, in order to form the release layer 193, the releasing composition is coated on the upper surface of the embossed layer 192 formed with a plurality of grooves in the coating portion 32, and then the dried composition is dried at a rate of 80 to 100 m / min And heated and dried at a temperature of 150 to 180 ° C, and the thickness of the release layer 193 after drying is 0.1 to 5 μm. If the thickness of the release layer 193 is less than 0.1 占 퐉, the holding performance of the releasing performance may be weakened and the peeling failure may occur. If the thickness exceeds 5 占 퐉, the processing efficiency is lowered and the working unit price is increased.

Hereinafter, the present invention will be described in more detail with reference to the following examples. However, the following examples are intended to explain the present invention more clearly and do not limit the scope of protection of the present invention.

In the embodiment of the present invention, a cationic or anionic resin is added in order to improve adhesion of the printing ink to the ink absorbing layer 150 using a polyester resin, an adhesive vinyl resin, and a porous adsorption filler as the main base material, In the present embodiment, the ink absorbing layer 150 comprises 50 to 75% by weight of a polyester resin, 15 to 25% by weight of an adhesive vinyl resin, 7.5 to 15.5% by weight of an adsorbing silica, 1 to 5% by weight of a cationic or anionic additive resin 0.1 to 1.5% by weight of a leveling agent, 0.1 to 1.5% by weight of a UV absorber, and a suitable amount of a mixed solvent.

At this time, the glass transition temperature (Tg) of the polyester resin is preferably 10 to 30 占 폚, and when it is out of the above range, the coloring degree of the eco-solvent ink is poor and the ink bleedability is greatly affected. In addition, by adding a cationic or anionic additive resin to the composition, an excellent ink absorbing ability and coloring degree can be realized.

[Example 1]

55% by weight of a polyester resin (Daewon Polymer, AP-600K, Tg 20 ° C), 25% by weight of an adhesive vinyl resin (APEC AP-5091, Tg 30 ° C) 1% by weight of a surface leveling agent (BYK Corp. BYK333), 15% by weight of silica (ESCAM TEXAS, SS54) and a UV absorber (Tinuvin.RTM. 99-2 manufactured by BASF) And the mixture was thoroughly mixed using a stirrer for 2 hours to prepare an ink absorbing layer coating solution.

The coating solution thus prepared was coated on a PP film formed with a polyurethane primer layer having a thickness of 100 탆 by a comma coating method and dried for 4 minutes at 100 캜 in a hot air blower to produce an output material for an inkjet printer having a thickness of 40 탆 Respectively. At this time, a wax release liner was used for the adhesive layer on the lower surface of the output material.

[ Example 2]

55% by weight of a polyester resin (Daewon Polymer, AP-600K, Tg 20 ° C), 25% by weight of an adhesive vinyl resin (APEC AP-5091, Tg 30 ° C) 1% by weight of a surface leveling agent (BYK Corp., BYK333), 2% by weight of an anionic additive resin (APEC AR-300N, Tg -33 캜, anion) , 15 wt% of a polyvinyl alcohol (SSC) and 1 wt% of a UV absorber (Tinuvin (R) 99-2 manufactured by BASF) were mixed and stirred at room temperature for 2 hours using a stirrer to prepare an ink absorbing layer coating solution.

[ Comparative Example One]

The coating solution thus prepared was coated on a PP film formed with a polyurethane primer layer having a thickness of 100 탆 by a comma coating method and dried for 4 minutes at 100 캜 in a hot air blower to produce an output material for an inkjet printer having a thickness of 40 탆 Respectively. At this time, a silicone release liner was used for the adhesive layer on the lower surface of the output material.

[ Comparative Example 2]

[ Comparative Example 3]

55% by weight of a polyester resin (Daewon Polymer, AF-7800, Tg 80 DEG C), 25% by weight of an adhesive vinyl resin (APEC AP-5091, Tg 30 DEG C) 1% by weight of a surface leveling agent (BYK Corp. BYK333), 15% by weight of silica (ESCAM TEXAS, SS54) and a UV absorber (Tinuvin.RTM. 99-2 manufactured by BASF) And the mixture was thoroughly mixed using a stirrer for 2 hours to prepare an ink absorbing layer coating solution.

[ Comparative Example 4]

A surface leveling agent (BYK Corp. BYK333) was added in an amount of 58% by weight based on 100 parts by weight of a polyester resin (Daewon Polymer, AP-600K, Tg 20 ° C), 25% by weight of an adhesive vinyl resin (APEC AP- , 15% by weight of silica (Eskemec Tex, SS54) and 1% by weight of UV absorber (Tinuvin (R) 99-2 manufactured by BASF) were mixed for 2 hours using a stirrer to prepare an ink absorbing layer coating solution.

[evaluation]

Evaluation items such as ink spreading property, ink drying speed, color density and mold release transition in the printing film material for ink jet printer manufactured according to Examples 1 and 2 and Comparative Example 1-4 were evaluated The evaluation results are shown in Table 1 below.

1) Ink Spreadability

The ink smear was observed immediately after using Eco-solvent ink jet printer RF-640A (Roland) and outputting with Eco-ink (Eco-Sol Max).

2) Ink drying rate

The time required for the ink to dry completely after printing with an eco-solvent ink jet printer RF-640A (Roland) was measured. After 2 minutes from outputting to the plotter, the PET film was pressed with a 1 kg compression roller, and the degree of transfer was visually observed.

3) Color density ( Color development )

The color density was visually observed based on 100% CMYK concentration after output using an eco-solvent ink jet printer RF-640A (Roland).

4) Dissociation evaluation

Each of Examples 1 and 2 and Comparative Example 1-4 was cut to A4 size, laminated on the lower surface of the release paper and the printing absorbent layer, and then allowed to stand in an oven at 60 ° C for 3 days. Each of the laminated Examples 1 and 2 and Comparative Example 1-4 was output to an eco-solvent ink jet printer RF-640A (Roland), and the ink quality was visually observed.

division Spreadability of ink Ink drying rate Color density Dissociation Example 1 Low (Good) Fast (Good) Good Not occurring Example 2 Low (Good) Fast (Good) Good Not occurring Comparative Example 1 Low (Good) Fast (Good) Good Occur Comparative Example 2 Low (Good) Fast (Good) Good Occur Comparative Example 3 High (bad) Medium (middle) Bad Not occurring Comparative Example 4 Low (Good) Slow (bad) Good Not occurring

As shown in Table 1, when the output material for an ink jet printer according to Example 1-2 was used and output to an eco-solvent ink jet printer, evaluation of ink bleeding, ink drying speed, color density, 4, respectively.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Of course.

It is to be understood that the terms "comprises", "comprising", "having", and the like as used herein to describe the embodiments of the present invention are meant to imply that the components are inherent unless otherwise stated , It is to be understood that the present invention can include other components than the other components. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

110: non-PVC based substrate layer 130: primer layer
150: ink absorbing layer 170: adhesive layer
190: release liner 191: substrate layer
192 emboss layer 193 release layer

Claims

A non-PVC based substrate layer of a transparent or white polyimide (PI) film having a thickness of 50 to 200 mu m;
A primer layer formed on an upper surface of the non-PVC base layer;
Wherein the primer layer is formed on the upper surface of the primer layer and comprises 50 to 75 wt% of a polyester resin, 15 to 25 wt% of an adhesive vinyl resin, 7.5 to 15.5 wt% of an adsorbing silica, an Ally-based salt, a urethane- 1 to 5% by weight of a cationic or anionic resin comprising at least one selected from vinyl amine salts and acrylamide based copolymer salts, 0.1 to 1.5% by weight of leveling agents, 0.1 to 1.5% by weight of UV absorbers, An ink absorbing layer for an eco-solvent ink in which a porous adsorption filler is mixed;
A composition comprising 20.7 to 55.7% by weight of a polyurethane adhesive resin, 1.5 to 7.5% by weight of an isocyanate curing agent, 0.2 to 1.0% by weight of a curing accelerator, 0.5 to 3.5% by weight of a leveling agent and 15.5 to 35.5% by weight of a mixed solvent, An adhesive layer formed on the lower surface of the PVC base layer and having a plurality of grooves formed on the surface thereof; And
And a release liner formed on the lower surface of the adhesive layer and made of a selected one or a mixture of polyolefin (PO) resin, high density polyethylene, low density polyethylene, ultra low density polyethylene and polypropylene,
Wherein the release liner comprises a base layer made of a paper or plastic film having a basis weight of 50 to 150 g / cm < 2 > and at least one of a polyolefin resin, high density polyethylene, low density polyethylene, ultra low density polyethylene and polypropylene An embrittlement layer made of a mixture of these materials, and an embossing layer formed on the embossing layer and containing 60 to 80 wt% of cyclohexane, 5.5 to 15.5 wt% of polyethylene wax, 4.5 to 10.5 wt% of paraffin wax, From 1.5 to 3.5% by weight of an antifoaming agent, and from 0.5 to 3.5% by weight of a leveling agent.

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The method according to claim 1,
Wherein the primer layer comprises at least one selected from an acrylic resin, a urethane resin, and a urethane acrylate copolymer resin.

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The method according to claim 1,
Wherein the mixed solvent of the ink absorbing layer is mixed so that the viscosity of the ink absorbing layer is 100 to 3000 cps.

The method according to claim 1,
Wherein the thickness of the ink absorbing layer is 10 to 60 占 퐉.

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The method according to claim 1,
Wherein the pressure-sensitive adhesive layer has a thickness of 10 to 50 占 퐉.

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The method according to claim 1,
Wherein said release liner comprises a release substrate coated with a wax release composition and wherein said adhesive layer has a residual adhesion of 95% or more and prevents transfer of the release agent.

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Providing a transparent or white plastic film made of one selected from the group consisting of polyimide (PI), polyethylene and polypropylene as a non-PVC base layer having a thickness of 50 to 200 탆 from an unwinder;
A primer layer is coated on an upper surface of the non-PVC base layer supplied from the uncoiler portion in a coating head, and then 50 to 75% by weight of a polyester resin and 15 to 25% by weight of an adhesive vinyl resin are coated on the top surface of the primer layer, , 7.5 to 15.5% by weight of adsorptive silica, at least one selected from the group consisting of an Ally-based salt, a urethane-based salt, a polyethyleneamine salt, a polyvinylamine salt and an acrylamide- Coating an ink absorbing layer for an eco-solvent ink in which an adhesive vinyl resin and a porous adsorptive filler are mixed, a leveling agent of 0.1 to 1.5% by weight, an UV absorber of 0.1 to 1.5% by weight,
Based base layer, 20.7 to 55.7% by weight of a polyurethane adhesive resin, 1.5 to 7.5% by weight of an isocyanate curing agent, 0.2 to 1.0% by weight of a curing accelerator, 0.5 to 3.5% by weight of a leveling agent, 15.5 to 35.5% Coating a pressure-sensitive adhesive layer formed on a lower surface of the non-PVC based substrate with a plurality of grooves formed in a lattice pattern on the surface thereof to form a film;
Heating and drying the formed film in a thermal drying unit; And
Attaching a release liner to the adhesive layer of the heated and dried film in a laminating portion,
Wherein the release liner comprises a base layer made of a paper or plastic film having a basis weight of 50 to 150 g / cm < 2 > and at least one of a polyolefin resin, high density polyethylene, low density polyethylene, ultra low density polyethylene and polypropylene An embrittlement layer made of a mixture of these materials, and an embossing layer formed on the embossing layer and containing 60 to 80 wt% of cyclohexane, 5.5 to 15.5 wt% of polyethylene wax, 4.5 to 10.5 wt% of paraffin wax, 1.5 to 3.5% by weight of an antifoaming agent, and 0.5 to 3.5% by weight of a leveling agent.

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24. The method of claim 23,
Wherein the polyester resin has a glass transition temperature (Tg) of 10 to 30 占 폚.

24. The method of claim 23,
Wherein the mixed solvent is mixed so that the viscosity of the ink absorbing layer is 100 to 3000 cps.

24. The method of claim 23,
The ink absorbing layer is transferred to the thermal drying furnace at a speed of 20 to 40 m / min in a state in which the ink absorbing layer is coated on the upper surface of the primer layer, and heated and dried at a temperature of 100 to 180 ° C to have a thickness of 10 to 60 μm (Method for producing printed adhesive film for solvent ink).

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