KR100796247B1 - Protective film transferring scratch-resistance to adhered object - Google Patents

Abstract

An adhesive protection film is provided to protect the surface of an injection-molded product from external shocks and impart scratch resistance to an adherend when being released from the adherend. An adhesive protection film(100) for imparting scratch resistance to the surface of an injection-molded product used as an electronic part, an edge frame of a display device, a prop, and a back cover includes a substrate film(10) and an adhesive layer(20). An adhesive composition for forming the adhesive layer comprises (i) an organic solvent and (ii) a mixture of an adhesive and a slip-functional additive. The slip-functional additive is contained in an amount of 0.1-15 parts by weight based on 100 parts by weight of the adhesive mixture.

Description

Adhesive film transferring scratch-resistance to adhered object}

1 is a cross-sectional view of the pressure-sensitive adhesive protective film to give scratch resistance to the adhered surface according to the present invention.

The present invention relates to a protective film in which a pressure-sensitive adhesive layer is coated on a base film in order to adhere to a substrate, and more specifically, the pressure-sensitive adhesive layer is made of a pressure-sensitive adhesive mixture containing a pressure-sensitive adhesive and a slip function additive, The functional additive relates to an adhesive protective film capable of providing scratch resistance to a surface of an adherend, which includes 0.1 to 15 parts by weight based on 100 parts by weight of the pressure-sensitive adhesive mixture.

Surface protection film is used to prevent scratches, contamination, corrosion, etc. of the surface of the product generated when processing, transporting, or storing the product in the form of a film, sheet or plate made of a material such as plastic, metal, glass. Generally, the protective film is temporarily adhered to the surface of the product and then detached after finishing processing, transportation, or storage of the product. Therefore, the protective film has a characteristic of being a one-time product. It is desirable to pay less.

Existing protective films used to package electronic components or products (substrates) such as display devices such as LCDs, PDPs, LEDs, CRTs, etc. are scratched, contaminated, and corroded on the surface during processing, transportation or storage. It was used only for the purpose of preventing a back.

Recently, however, attempts have been made to increase the scratch resistance of the adherend surface (adhered surface) when applied to the adherend. For example, such an attempt has been made by coating the surface of the adherend with a silicone polish, wiping the surface again, and then attaching and using a general surface protective film. However, when such a method is used, not only the disadvantages of productivity and cost increase due to the double operation, but also a problem of large transition marks remaining on the adherend when peeling off the surface protective film from the adherend due to the silicone polish. .

As another approach, a method of preventing scratches, contamination, and corrosion of the surface generated during the processing, transport or storage of the adherend using the adhesive protective film, as well as increasing scratch resistance on the adhered surface when peeling off. As a method of manufacturing a pressure-sensitive adhesive film by adding silicone oil to the pressure-sensitive adhesive as an attempt, such a method is also used as an edge frame, a base, and a rear cover of an electronic component, a display (LCD, PDP, LED, CRT, etc.) When peeling the adhesive protective film from the adherend on the surface of the injection molding, there was a problem in that a component such as an adhesive or an undried residual solvent remained on the adherend on the adhered surface.

Accordingly, the present inventors have made efforts to devise a way to increase scratch resistance on the surface (adhered surface) of the adherend while adhering a protective film to a conventional electronic component or an adherend such as a display device such as LCD, PDP, LED, CRT, etc. As a result of the effort, the present invention has been completed.

As a result, an object of the present invention is to adhere to the surface adherend of the injection molding used as the rim frame, pedestal and back cover of an electronic component or a display (LCD, PDP, LED, CRT, etc.) device, and then peel off the adhered surface. It is to provide an adhesive protective film that can impart scratch resistance.

Another object of the present invention is to provide an adhesive protective film that can be maintained in a state where the scratch resistance is increased on the adhered surface even after sticking and peeling on the adherend.

In order to achieve the above object, the present invention

An adhesive protective film comprising a pressure-sensitive adhesive layer formed by coating a pressure-sensitive adhesive layer composition on a base film in order to adhere to a surface to be adhered, wherein the pressure-sensitive adhesive layer composition comprises i) an organic solvent, and ii) an adhesive and a slip function additive. It includes a pressure-sensitive adhesive mixture, the slip function additive provides a pressure-sensitive protective film, characterized in that included in 0.1 to 15 parts by weight based on 100 parts by weight of the pressure-sensitive adhesive mixture.

The pressure-sensitive adhesive layer composition may further include other film additives such as a curing agent, an antistatic agent, a tackifier, a plasticizer, a filler, an antioxidant, a UV absorber, a silane coupling agent, and the like. The film additive is preferably included in 0.1 to 15 parts by weight based on 100 parts by weight of the pressure-sensitive adhesive mixture.

When the antistatic agent is included in the pressure sensitive adhesive mixture, the antistatic agent is preferably included in an amount of 0.1 to 15 parts by weight based on 100 parts by weight of the pressure sensitive adhesive mixture.

According to an embodiment of the present invention, the pressure-sensitive adhesive mixture may include a pressure-sensitive adhesive 60 to 99% by weight, 0.1-15% by weight of the slip function additive, 0.1-10% by weight of the curing agent, 0.1-15% by weight of the antistatic agent.

The adhesive layer composition which concerns on this invention is manufactured by mixing 50-300 weight part of organic solvents with respect to 100 weight part of said adhesive mixtures.

The present invention also provides a pressure-sensitive adhesive mixture containing 100 parts by weight of the pressure-sensitive adhesive mixture comprising a slip function additive to prepare a pressure-sensitive adhesive mixture by mixing 0.1 to 15 parts by weight; Preparing an adhesive layer composition by mixing an organic solvent with the adhesive mixture; Applying the adhesive layer composition to a base film and drying the film; And it provides a method for producing an adhesive protection film comprising the step of aging the dried film for about 24 hours or more.

The adhesive layer composition which concerns on this invention is manufactured by mixing 50-300 weight part of organic solvents with respect to 100 weight part of said adhesive mixtures.

The organic solvent is methyl alcohol, ethyl alcohol, isopropyl alcohol, normal butanol, toluene, xylene, 1-methyl-2-pyrrolidinone, chloroform, ethyl acetate, 2-methoxyethanol, methylformamide and 2-buta It may be used alone or in combination of one or more selected from the group consisting of paddy fields.

When the adhesive layer composition is applied to the base film, the thickness of the adhesive layer is preferably applied at 1 to 50 μm and dried at 60 to 180 ° C. for 2 to 10 minutes.

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

The present invention provides an adhesive protective film comprising an adhesive layer formed by coating an adhesive layer composition on a base film in order to adhere to an adhered surface, wherein the adhesive layer composition comprises: i) an organic solvent, ii) an adhesive, and a slip function additive. It includes an adhesive mixture comprising a, wherein the slip-functional additive provides an adhesive protective film, characterized in that included in 0.1 to 15 parts by weight based on 100 parts by weight of the pressure-sensitive adhesive mixture.

The pressure-sensitive adhesive may be used at least one polymer selected from the group consisting of acrylic, urethane, synthetic rubber and silicone polymer. However, from the viewpoint of transparency, weather resistance, heat resistance and the like, an acrylic pressure sensitive adhesive having an acrylic polymer as a base polymer is preferable.

It is preferable that the weight average molecular weight (measured by GPC and conversion by standard polystyrene) of the acrylic polymer used by this invention is 300,000-2,500,000. If the average molecular weight is less than 300,000, the physical properties of the adhesive force is reduced, and if the 2.5 million or more, workability is difficult.

As a monomer which can be used for the said acrylic polymer, there exists an alkyl (meth) acrylate. The (meth) acrylic acid alkyl ester may be used as the (meth) alkyl acrylate, and the (meth) acrylic acid alkyl ester may be methyl ester, ethyl ester, propyl ester, butyl ester, 2-ethylhexyl ester, isooctyl ester or isononyl. C1 to C1 selected from the group consisting of ester, isodecyl ester, dodecyl ester, lauryl ester, tridecyl ester, pentadecyl ester, hexadecyl ester, heptadecyl ester, octadecyl ester, nonadecyl ester and eicosyl ester One or more 20 alkyl esters may be used alone or in combination.

Moreover, in order to provide polarity to an acryl-type polymer, together with the said (meth) acrylic-acid alkylester, Carboxyl group containing monomers, such as (meth) acrylic acid and itaconic acid; Hydroxyl group-containing monomers such as hydroxyethyl (meth) acrylate and hydroxypropyl (meth) acrylate; Amide group-containing monomers such as N-methylol acrylamide; Cyano group-containing monomers such as (meth) acrylonitrile; Epoxy group-containing monomers such as glycidyl (meth) acrylate; Vinyl ester monomers such as vinyl acetate; And a monomer selected from the group consisting of styrene monomers such as styrene and α-methylstyrene can be used as the copolymerization monomer.

The polymerization method of the acrylic polymer is not particularly limited, and known polymerization methods such as solution polymerization, emulsion polymerization, suspension polymerization, UV polymerization and the like can be adopted.

In addition, the base polymer of the rubber-based pressure-sensitive adhesive may be used as the pressure-sensitive adhesive, natural rubber, isoprene-based rubber, styrene-butadiene-based rubber, recycled rubber, polyisobutylene-based rubber, styrene-isoprene-styrene-based rubber, styrene- Butadiene-styrene rubber etc. are mentioned. Dimethyl polysiloxane, diphenyl polysiloxane, etc. are mentioned as a base polymer of silicone pressure sensitive adhesive, The base polymer can also use what introduce | transduced functional groups, such as a carboxyl group.

The slip function additives impart slip properties to the material to be added, where slip property is to increase the slipperiness of the surface state in order to protect the scratch property of the adhesive surface from nails and external materials, and to protect the adhesive tape. The scratch resistance is increased by transferring the sliding property of the surface from the surface to the adherend.

As the slip-type functional additive according to the present invention, a silicone-based polymer may be used as a silicone-based material in the form of a siloxane copolymer, a modified polysiloxane, or a fluorine-urethane copolymer polymer.

Examples of the siloxane copolymer include fluorosilicone, silicone polyether copolymer, polydimethyl siloxane, and the like, and examples of the modified polysiloxane include carbinol silicon ether and its derivatives, carbinol silicon ether and its derivatives, and methacrylate silicon ether. And derivatives thereof and arylalkyl silicones and derivatives thereof. Examples of fluorine-urethane copolymerized polymer forms include a perfluorinated alkyl alcohol and a functional isocyanate comonomer polymerized by a free radical polymerization reaction in a urethane reaction of a hydroxyl group and an isocyanate group. Perfluorine-urethane copolymers prepared, or compounds or oligomers having at least one or more fluorine-containing end groups, and fluorine compositions comprising high molecules polymerized in continuous units. In the fluorine-urethane copolymer polymer, n is 1 to 20 and an average molecular weight is 1,000 to 10,000 in a perfluorine group [CF ₃ (CF ₂ ) n functional functional group].

In the present invention, the slip function additive is used by adding 0.1 to 15 parts by weight based on 100 parts by weight of the pressure-sensitive adhesive mixture. This is because when added in an amount of 0.1 parts by weight or less, the self-slip property is too weak to impart slip properties to the adhered surface, and when it is added in an amount of 15 parts by weight or more, silicon is transferred to the adhered surface and staining occurs on the adhered surface.

The antistatic agent is an ion-complex antistatic agent, and examples of the alkali metal salt or the alkali metal organic compound include a cation-ion conductive material and an anion-ion conductive material.

Such antistatic agents include alkali metal salts or alkali metal organic compounds, more specifically LiPF ₆ , LiBF ₄ , LiSbF ₆ , LiClO ₄ , LiCF ₃ SO ₃ , LiAsF ₆ , LiC (CF ₃ SO ₃ ) ₃ , LiN (CF ₃ All salts of Li, Na, K, such as SO ₃ ) ₂ , LiI, LiBr, LiCl, LiF, NaPF ₆ , NaClO ₄ , NaI, NaSCN, KSCN, KPF ₆ , KClO _4, and the like. Examples of the transition metal salts include cation-ion and anion-ion conducting materials prepared using all metal salts including Fe, Ni, Cu, Zn and the like alone or in a mixture.

In the present invention, the antistatic agent may be used in the range of 0.1 to 15 parts by weight based on 100 parts by weight of the pressure-sensitive adhesive mixture. This is because the addition of 0.1 parts by weight or less may lower the antistatic function, and when 15 parts by weight or more is added, the physical properties of the adhesive layer may be reduced, or when the protective film is peeled off, there may be a problem that a stain may occur due to a transition phenomenon on the adhered surface. to be.

The adhesive mixture for forming the adhesive layer may include a curing agent. As the curing agent, those selected from the group consisting of polyisocyanate compounds, polyamine compounds, melamine resins, urea resins and epoxy resins can be used.

In addition, a tackifier, a plasticizer, a filler, an antioxidant, a ultraviolet absorber, a silane coupling agent, etc. can also be mixed with the said adhesive mixture as needed in a normal usage range as needed.

The pressure-sensitive adhesive mixture is mixed with an organic solvent to form a pressure-sensitive adhesive layer composition. At this time, the organic solvent is preferably contained 50 to 300 parts by weight based on 100 parts by weight of the pressure-sensitive adhesive mixture, which is difficult to apply when the organic solvent is contained in less than 50 parts by weight, less than 300 parts by weight, the adhesive function is poor Because.

The organic solvent is selected from the group consisting of alkyl alcohol, alkyl ketone, alkylamide, alkyl ester, alkyl ether or alkyl benzene selected from the group consisting of substituted or unsubstituted alkyl, cycloalkyl, aromatic cycloalkyl having 2 to 20 carbon atoms. 1 or more types can be used individually or in mixture. For example, methyl alcohol, ethyl alcohol, isopropyl alcohol, normal butanol, toluene, xylene, 1-methyl-2-pyrrolidinone, chloroform, ethyl acetate, 2-methoxyethanol, methylformamide and 2-butanone It may be used alone or in combination of one or more selected from the group consisting of.

The method of forming the adhesive layer with the adhesive layer composition containing the above components is not particularly limited by a specific method, and a coating method such as gravure, micro gravure, roll, comma, etc. by applying the adhesive layer composition to the base film. Any of them can be used, such as dipping and spraying. In addition, after applying and drying the pressure-sensitive adhesive mixture to the base film used as a support, the method of transferring to the base film or the foreign matter absorbing layer (transfer method), the method of directly applying and drying the pressure-sensitive adhesive to the base film or foreign material absorbing layer (direct method) Any one of the usual methods, such as), can be suitably selected and used as needed.

The thickness of the pressure-sensitive adhesive layer after drying (ie, the dry film thickness) may be determined according to the adhesive force required according to the use of the adhesive protective film, but is usually in the range of about 1 to 100 μm, preferably 1 to 50 μm. Can be used. If it is less than 1 μm, the adhesion and scratch resistance decrease, and if it is 100 μm or more, workability due to coating is inferior.

The base film used in the present invention is a polyester film, polyethylene film (polyethylene terephthalate, etc.), polypropylene film, cellophane, diacetyl cellulose film, in view of the member surface such as high transparency, excellent mechanical properties and optical anisotropy, TAC film, acetylcellulose butyrate film, polyvinylidene chloride film, polyvinyl alcohol film, ethylene-vinyl alcohol film, syndiotactic polystyrene film, polycarbonate film, polymethylpentene film, norbornene resin film, polymethylpentene Film, polyetherketone film, polyethersulfone film, polysulfone film, polyetherketoneimide film, polyimide film, fluorine-containing resin film, nylon film, acrylic film or polyarylate film, triacetyl cellulose (cellulose triacetate A) film, and polycarbonate film It can be selected from the group consisting of.

Referring to Figure 1, Figure 1 is a cross-sectional view of the pressure-sensitive adhesive film provided with scratch resistance according to the present invention. The adhesive protective film 100 according to the present invention is composed of an adhesive layer 20 that can impart scratch resistance on the base film 10.

The present invention will be described in more detail with reference to the following Examples. However, the following examples are only preferred examples of the present invention, and the present invention is not limited to the following examples.

<Example 1>

96.5 g of an acrylic adhesive [Cosmotech Co., Ltd., CMT-1101] is mixed with 0.5 g of a curing agent (MA-4, melamine type) and 3 g of a slip function additive (Dc 14, a silicone polyether system, Dow Corning Co. LTD) A pressure-sensitive adhesive mixture was prepared, and 150 g of ethyl acetate was further diluted as a solvent to prepare a pressure-sensitive adhesive layer composition. The pressure-sensitive adhesive mixture thus prepared was applied to a PE (polyethylene) film, which is a base film, about 10 μm, dried at 80 ° C. for 2 minutes, and aged at 60 ° C. for at least 1 day to provide a slip function of 2 μm in thickness (coating film after drying). An adhesive protective film was prepared.

The pressure-sensitive adhesive protective film prepared above was attached to the PDP injection molding frame and peeled off after 24 hours to measure the transition state and hardness of the adherend surface.

<Example 2-3>

Examples 2 and 3 include 3 g of arylalkyl modified silicone (DC 56, Dow Corning Co. LTD) as a slip functional additive in Example 1 (Example 2), or a fluorourethane copolymer (DC 7, Dow Corning Co) Example 3 was carried out in the same manner as in Example 1, except that 3g (Example 3) was mixed to prepare an adhesive mixture.

<Example 4-6>

Example 4 was carried out in the same manner as in Example 4, except that 0.5 g, 10 g, and 15 g of a slip function additive (silicon polyether-based DC 14, Dow Corning Co. LTD) was added and used.

The pressure-sensitive adhesive protective film prepared above was attached to the PDP edge frame injection molding and peeled off after 24 hours to measure the transition state and hardness of the adhered surface.

<Example 7>

95.5 g of acrylic pressure-sensitive adhesive [Cosmotech Co., Ltd., CMT-1101], 0.5 g of hardening agent (MA-4, melamine type), 3 g of slip functional additives (DC 14, silicone polyether type, Dow Corning Co. LTD.), Daejeon After preparing a pressure-sensitive adhesive mixture by mixing with 1 g of an inhibitor (nanocamtec, 100ED), 50 g of ethyl acetate was further diluted as a solvent to prepare a pressure-sensitive adhesive mixture. The pressure-sensitive adhesive mixture was applied to a PE (polyethylene) film, which is a base film, about 10 μm (pre-drying coating), dried at 80 ° C. for 2 minutes, and aged at 60 ° C. for at least 1 day to slip 2 μm thick (coating after drying). An adhesive protective film was prepared.

The pressure-sensitive adhesive protective film prepared above was attached to the PDP edge frame injection molding and peeled off after 24 hours to measure the transition state and hardness of the adhered surface.

Comparative Example 1

99.5 g of an acrylic adhesive (Cosmotech Co., Ltd., CMT-1101) was mixed with 0.5 g of a curing agent (MA-4, melamine type) to prepare an adhesive mixture, and 50 g of ethyl acetate was further diluted as a solvent to prepare an adhesive mixture. It was. The pressure-sensitive adhesive mixture was applied to a PE (polyethylene) film, which is a base film, at 10 μm (pre-drying coating), dried at 80 ° C. for 2 minutes, and aged at 60 ° C. for at least 1 day to give a 2 μm-thickness (after drying coating). A protective film was prepared. The pressure-sensitive adhesive protective film prepared above was attached to the PDP rim frame injection molding and peeled off after 24 hours to measure the transition state and hardness of the adherend surface.

Comparative Example 2

In Example 1, the same procedure as in Example 1 was carried out except that 3 g of silicone lubricant (3M Co.), which is a silicone oil, was added and used.

The pressure-sensitive adhesive protective film prepared above was attached to the PDP edge frame injection molding and peeled off after 24 hours to measure the transition state and hardness of the adhered surface.

Measure

The adhesive protective films prepared in Examples 1 to 4 and Comparative Example 1 were attached to the PDP edge frame injection molding and peeled off after 24 hours to measure the transition state and hardness of the adhesive surface, and the surface resistance of the adhesive surface of the adhesive protective film. Was measured. Surface resistance was measured under the conditions of 55% RH, 23 ℃, and applied voltage 500V according to ASTM-D257 measurement method, and the transition phenomenon was visually observed. The adhesion test of the adhered surface was TEST Roller: 6.86 kPa (70 g / cm). It was compressed using a TEST ADHESIVE TAPE: TESA 7475 and measured. The hardness of the degree of scratchability was measured using the pencil hardness. These physical property test results are shown in Table 1 below.

Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Comparative Example 1 Comparative Example 2 Transition phenomenon (adherence surface) x x x x x △ x x O Adhesive force (adhering surface) 13 g 12 g 12 g 13 g 12 g 10 g 13 g 30 g 18g Hardness (adhering surface)  B F to B F 2B-B F HB-F B 5B 3B Surface Resistance (Ω / sq.) (Adhesive Side of Protective Film) Insulator Insulator Insulator Insulator Insulator Insulator 10 ^{9 ~ 10} Insulator Insulator * Transition phenomena: visually judged-no metastasis (X), metastasis mark (△), metastasis (O)

As can be seen in Examples 1 to 7 and Comparative Examples 1 to 2, the adhesive protective film having a slip function according to the present invention, when compared with the existing protective film, after peeling, the slipperiness of the adhered surface Significantly improved, the adhesion decreased. In addition, it was confirmed that the hardness of the degree of scratch resistance significantly increased. In addition, through Example 4 additionally added an antistatic agent it was confirmed that it has a function in Examples 1 to 3 as it has an additional antistatic effect to minimize the failure rate for the electrostatic phenomenon.

Unlike the existing adhesive protective film, the adhesive protective film imparting a scratch resistance function to the adhered surface according to the present invention, by adding a slip function additive to the adhesive layer, not only has the slip property as the protective film itself but also the adhered surface after peeling Slip property can be imparted to. Accordingly, the protective film of the present invention, as well as the basic function of protecting the surface of the injection molded object used as the frame, the pedestal and the back cover of the display (LCD, PDP, LED, CRT, etc.) devices from external shocks, Even after peeling off the protective film, the slipperiness of the protective film is also given to the adhered surface, thereby increasing the scratch resistance of the adhered surface.

Claims (22)

In the pressure-sensitive adhesive protective film comprising a base film and an adhesive layer for imparting scratch resistance to the surface of an injection molded product used as an electronic component, an edge frame of a display device, a pedestal and a back cover, an adhesive composition for forming the adhesive layer is i A) a pressure-sensitive adhesive mixture comprising an organic solvent, and ii) a pressure-sensitive adhesive and a slip function additive, wherein the slip function additive is included in an amount of 0.1 to 15 parts by weight based on 100 parts by weight of the pressure-sensitive adhesive mixture. . The method of claim 1, wherein the slip functional additive is a silicone-based material, one or more selected from the group consisting of siloxane copolymer (polyether siloxane copolymer, modified polysiloxane) or fluorine-urethane copolymer polymer used alone or mixed Adhesive protective film, characterized in that. The pressure-sensitive adhesive film according to claim 2, wherein the siloxane copolymer is at least one selected from the group consisting of fluorosilicone, silicone polyether copolymer and polydimethyl siloxane. 3. The modified polysiloxane according to claim 2, wherein the modified polysiloxane is at least one selected from the group consisting of carbinol silicone ethers and derivatives thereof, carbinol silicone ethers and derivatives thereof, methacrylate silicone ethers and derivatives thereof, and arylalkyl silicones and derivatives thereof. Adhesive protective film, characterized in that the singly or a mixture. The method of claim 2, wherein the fluorine-urethane copolymer is a perfluorine-urethane copolymer prepared by polymerizing a perfluorinated alkyl alcohol and a functional isocyanate comonomer by a urethane reaction of a hydroxyl group and an isocyanate group by a free radical polymerization reaction, Adhesive protective film, characterized in that at least one compound or oligomer having at least one fluorine-containing end group, and one or more selected from the group consisting of polymers polymerized in a continuous unit. The pressure-sensitive adhesive protective film according to claim 5, wherein the perfluorine group has n to 1 to 20 and an average molecular weight of 1,000 to 10,000 in the [CF ₃ (CF ₂ ) n functional functional group]. According to claim 1, wherein the pressure-sensitive adhesive is an adhesive protective film, characterized in that at least one polymer selected from the group consisting of acrylic, urethane, synthetic rubber and silicone polymer. The pressure-sensitive adhesive film according to claim 1, wherein the pressure-sensitive adhesive is an acrylic polymer pressure-sensitive adhesive having an acrylic polymer as a base polymer. The adhesive protective film according to claim 8, wherein the acrylic polymer has a weight average molecular weight (measured by GPC and converted into standard polystyrene) of 300,000 to 2.50,000. The monomer used in the acrylic polymer is methyl ester, ethyl ester, propyl ester, butyl ester, 2-ethylhexyl ester, isooctyl ester, isononyl ester, isodecyl ester, dodecyl ester, lauryl Use of one or more C1-20 alkyl esters selected from the group consisting of esters, tridecyl esters, pentadecyl esters, hexadecyl esters, heptadecyl esters, octadecyl esters, nonadecyl esters, and eicosyl esters, alone or in combination Adhesive protective film, characterized in that. The monomer used in the acrylic polymer is a carboxyl group-containing monomer such as (meth) acrylic acid and itaconic acid together with the (meth) acrylic acid alkyl ester; Hydroxyl group-containing monomers such as hydroxyethyl (meth) acrylate and hydroxypropyl (meth) acrylate; Amide group-containing monomers such as N-methylol acrylamide; Cyano group-containing monomers such as (meth) acrylonitrile; Epoxy group-containing monomers such as glycidyl (meth) acrylate; Vinyl ester monomers such as vinyl acetate; And a copolymerization monomer obtained by copolymerizing at least one monomer selected from the group consisting of styrene monomers such as styrene and α-methylstyrene. The method of claim 1, wherein the pressure-sensitive adhesive is a rubber pressure-sensitive adhesive, natural rubber, isoprene rubber, styrene-butadiene rubber, recycled rubber, polyisobutylene rubber, styrene-isoprene-styrene rubber, styrene-butadiene-styrene rubber Pressure-sensitive adhesive protective film, characterized in that at least one member selected from the group consisting of or a mixture thereof. The pressure-sensitive adhesive film according to claim 1, wherein the pressure-sensitive adhesive is a silicone pressure-sensitive adhesive, dimethylpolysiloxane or diphenylpolysiloxane. The pressure-sensitive adhesive protective film of claim 1, wherein the pressure-sensitive adhesive layer composition further comprises a film additive including a curing agent, an antistatic agent, a tackifier, a plasticizer, a filler, an antioxidant, an ultraviolet absorber, and a silane coupling agent. . The pressure-sensitive adhesive film of claim 14, wherein the antistatic agent is included in an amount of 0.1 to 15 parts by weight based on 100 parts by weight of the pressure-sensitive adhesive mixture. The method of claim 15, wherein the antistatic agent is an ion-complex antistatic agent, and as an alkali metal salt or an alkali metal organic compound, LiPF ₆ , LiBF ₄ , LiSbF ₆ , LiClO ₄ , LiCF ₃ SO ₃ , LiAsF ₆ , LiC (CF ₃ At least one selected from the group consisting of SO ₃ ) ₃ , LiN (CF ₃ SO ₃ ) ₂ , LiI, LiBr, LiCl, LiF, NaPF ₆ , NaClO ₄ , NaI, NaSCN, KSCN, KPF ₆ , and KClO ₄ ; Or a pressure-sensitive adhesive film, characterized in that mixed. The method of claim 1, wherein the pressure-sensitive adhesive mixture further comprises a curing agent, wherein the curing agent is alone or mixed with at least one selected from the group consisting of polyisocyanate compounds, polyamine compounds, melamine resins, urea resins and epoxy resins. Adhesive protective film, characterized in that used. The pressure-sensitive adhesive film of claim 1, wherein the pressure-sensitive adhesive layer composition is prepared by mixing 50 to 300 parts by weight of an organic solvent with respect to 100 parts by weight of the pressure-sensitive adhesive mixture. 19. The method of claim 18, wherein the organic solvent is methyl alcohol, ethyl alcohol, isopropyl alcohol, normal butanol, toluene, xylene, 1-methyl-2-pyrrolidinone, chloroform, ethyl acetate, 2-methoxyethanol, methylform Adhesive protective film, characterized in that used alone or in combination of one or more selected from the group consisting of amide and 2-butanone. According to claim 1, wherein the pressure-sensitive adhesive mixture is characterized in that the pressure-sensitive adhesive 60 to 99% by weight, 0.1-15% by weight of the slip function additive, 0.1-10% by weight of the curing agent, 0.1-15% by weight of the antistatic agent Protective film. The method of claim 1, wherein the base film is a polyester film, polyethylene film, polypropylene film, cellophane, diacetyl cellulose film, TAC film, acetyl cellulose butyrate film, polyvinylidene chloride film, polyvinyl alcohol film, ethylene-vinyl Alcohol film, syndiotactic polystyrene film, polycarbonate film, polymethylpentene film, norbornene resin film, polymethylpentene film, polyetherketone film, polyethersulfone film, polysulfone film, polyetherketoneimide film , Polyimide film, fluorine-containing resin film, nylon film, acrylic film or polyarylate film, triacetyl cellulose (cellulose triacetate) film, and polycarbonate film film. Preparing a pressure-sensitive adhesive mixture by mixing the slip-functional additive in an amount of 0.1 to 15 parts by weight based on 100 parts by weight of the pressure-sensitive adhesive mixture including the pressure-sensitive adhesive and the slip-functional additive; Preparing an adhesive layer composition by mixing an organic solvent with the adhesive mixture; Applying the adhesive layer composition to a base film and drying the film; And a step of aging the dried film for 24 hours or more.

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