KR100958942B1 - Substrate for inkjet printing and producing method thereof - Google Patents

Abstract

A nonwoven fabric layer composed of 50 to 1,500 denier fine filaments of multifilament yarn, wherein the weight per unit area is 50 to 200 g / m 2, and the tensile strength is 10 to 100 kgf / cm 2; As the first polymer resin coating layer formed on the multifilament yarn nonwoven layer, 60 to 90 parts by weight of medium density polyethylene having a density of 0.926 to 0.940 g / cm3, 5 to 30 parts by weight of isotactic polypropylene, and 5 to 30 parts by weight of milk whitening agent A first polymer resin coating layer comprising a mixture mixed at a ratio, and whose surface is treated with plasma; And an ink receiving layer formed on the plasma-treated surface of the first polymer resin coating layer, comprising 15 to 30 parts by weight of porous inorganic particles, 15 to 35 parts by weight of a polymeric binder, and 5 to 10 parts by weight of a crosslinking agent to promote ink absorption. Disclosed are a material for ink jet printing and a method of manufacturing the same, comprising an ink receiving layer. Therefore, the inkjet printing material according to the present invention not only has excellent moldability, but also can quickly realize high reliability and high-definition image during inkjet printing, and the obtained advertising material has surface smoothness, glossiness, flexibility, and tensile strength. It is excellent in mechanical properties such as flexural modulus and curling phenomena and tearing. The inkjet print material according to the present invention is useful for maximizing the advertising effect.

Description

Material for inkjet printing and manufacturing method therefor {Substrate for inkjet printing and producing method

The present invention relates to a material for inkjet printing and a method for manufacturing the same, and more particularly, mechanical properties, flexibility, surface smoothness, absorbency to various inks, color realization, ink quick drying, and light weight that can prevent curling. It relates to a material for ink jet printing and a manufacturing method thereof.

As a conventional advertising material for inkjet printing, polyvinyl chloride (PVC) having good flexibility and ink absorption ability is mainly used. Korean Patent Application No. 2006-0010965 and Korean Patent Publication No. 2007-0042804 disclose an advertisement material having excellent smoothness using PVC. Recently, however, as ink for inkjet printing is rapidly switched from water-based ink to solvent ink, a lot of low-boiling solvents are used to increase the fastness and ink stability of solvent ink, and the internal stress of PVC fabric increases during inkjet printing, causing deformation. This causes the shrinkage phenomenon and the curling phenomenon. PVC used as an advertising material for inkjet printing is a soft PVC type containing a large amount of plasticizers, which causes problems of inconsistency in vividness of color and yellowing during inkjet printing due to the plasticizer, thereby preventing the advertisement effect from being maximized.

In order to solve this problem, there is a method of reducing deformation by adhering PVC to a film or polyester fabric using an adhesive to PVC. However, in this method, the adhesive force decreases over time due to physicochemical properties such as hysteresis effect, dwell time effect, and crosslinking degree of the adhesive used in the bonding process, and deformation and bending of the PVC surface form inkjet. There is a problem that damages the inkjet printer and the plotter head used for printing.

Meanwhile, US Pat. No. 5,958,564, US Pat. No. 6,866,268, Japanese Patent Application Laid-Open No. 60-232990, Japanese Patent Application Laid-Open No. 62-268682 as an advertising material for inkjet printing disclose an inkjet-type advertising material in which an ink receiving layer is formed on a paper material. . However, since paper has higher flexural modulus than PVC, it is difficult to use it in a curved area, and it is used only extremely limited because of its weak physical properties such as water resistance, moisture resistance, and tensile strength.

US Pat. No. 6,561,564, US Pat. No. 6,474,022, and US Pat. No. 4,298,645 disclose tarpaulins used as advertising materials for inkjet printing. Generally, tarpaulin is coated with resin on both sides of the fabric to impart waterproof function. The tarpaulin is classified into PVC tarpaulin and polyethylene (PE) tarpaulin according to the type of coating resin. PVC tarpaulin is a coating of PVC coating solution on the surface of polyester fabric, which is waterproof and durable, but because of its high density, the product is heavy and environmental problems caused by the use of environmental hormone-inducing substances in the production process and in particular by the generation of dioxin during incineration In addition to causing the use of the solvent-type ink as mentioned above there is a problem that the internal stress of the PVC rises causing the shrinkage and curling phenomenon to damage the head of the inkjet printer and plotter. PE tarpaulin is lighter than PVC tarpaulin and has environmentally reproducible advantages, but it has poor adhesion with the ink receiving layer that absorbs ink during inkjet printing, and the ink receiving layer coating process due to the durability and tensile strength of PE resin. There is a problem of causing tearing and bending of the fabric. In addition, high-temperature coating process of the PE resin is carried out during the production of PE tarpaulin, which results in deformation of the polyester yarn, which lowers the smoothness of the coated surface of the product, which in turn affects the ink receiving layer, which reduces the color clarity and surface of the printed image. There is a problem that the appearance quality and the advertising effect of the product is not maximized due to unevenness of smoothness.

U.S. Patent No. 4,906,503 discloses a banner similar to tarpaulin, which bonds a PE film to a fabric and coats a coating that can absorb ink thereon, with good flexibility, There is a problem that the peeling phenomenon and mechanical properties such as tensile strength and stiffness are weak. US Pat. No. 6,013,354 and US Pat. No. 5,985,425 are advertising records coated with an ink receptive layer capable of absorbing ink ejected from an inkjet printer onto plastic films such as polyethylene terephthalate (PET) film, PE film, and polypropylene (PP) film. Since the recording medium has a poor adhesion between the film and the ink-receiving layer and the characteristics of the base film are different from each other, there is a limit to the general application regardless of the place and time because the application field is limited as the advertising material is limited. .

The present invention has been made to solve the above problems, and an object of the present invention is mechanical properties, flexibility, surface smoothness, absorbency for various inks, color reproducibility, and ink quick drying property, and are lightweight and can prevent curling. It is to provide a material for inkjet printing.

Another object of the present invention is to provide a method for producing a lightweight inkjet printing material.

One aspect of the present invention to achieve the above object,

A nonwoven fabric layer composed of 50 to 1,500 denier fine filaments of multifilament yarn, wherein the weight per unit area is 50 to 200 g / m 2, and the tensile strength is 10 to 100 kgf / cm 2;

As the first polymer resin coating layer formed on the multifilament yarn nonwoven layer, 60 to 90 parts by weight of medium density polyethylene having a density of 0.926 to 0.940 g / cm3, 5 to 30 parts by weight of isotactic polypropylene, and 5 to 30 parts by weight of milk whitening agent A first polymer resin coating layer comprising a mixture mixed at a ratio, and whose surface is treated with plasma; And

An ink receiving layer formed on the surface treated with the plasma of the first polymer resin coating layer, the ink including 15 to 30 parts by weight of porous inorganic particles, 15 to 35 parts by weight of a polymeric binder, and 5 to 10 parts by weight of a crosslinking agent to promote ink absorption. Provided is a material for ink jet printing, comprising a receiving layer.

In one embodiment of the present invention, the inkjet printing material is a second polymer resin coating layer formed below the multifilament yarn nonwoven fabric layer, 60 to 90 parts by weight of medium density polyethylene having an density of 0.926 to 0.940 g / cm3, isotactic It may further comprise a polymer resin coating layer comprising a mixture of 5 to 30 parts by weight of polypropylene, and 5 to 30 parts by weight of a milking agent.

In one embodiment of the present invention, the multifilament yarns of the multifilament yarn nonwoven layer is made of one or more selected from the group consisting of polyester, polypropylene, and polyamide, and the average fiber length is preferably 150 mm or more.

Another aspect of the present invention to achieve the above another object,

(a) A nonwoven fabric composed of 50-1500 denier microfilament multifilament yarns, which continuously supplies a multifilament yarn nonwoven fabric having a weight of 50 to 200 g / m2 and a tensile strength of 10 to 100 kgf / cm2. Making;

(b) 60 to 90 parts by weight of medium density polyethylene having a density of 0.926 to 0.940 g / cm3, 5 to 30 parts by weight of isotactic polypropylene, and 5 to 30 parts by weight of milk whitening agent on one surface of the supplied multifilament yarn nonwoven fabric The multifilament yarn nonwoven fabric having the first polymer resin coating layer formed thereon is formed by continuously pressing the multifilament yarn nonwoven fabric and the polymer resin coating layer forming melt mixture while supplying a molten mixture for forming the polymer resin coating layer mixed with Making;

(c) plasma treating the surface of the first polymer resin coating layer using a plasma of at least one gas selected from the group consisting of oxygen gas, nitrogen gas, helium gas, argon gas and air; And

(d) 15 to 30 parts by weight of porous inorganic particles, 15 to 35 parts by weight of a polymeric binder, 5 to 10 parts by weight of a crosslinking agent, and a dispersion medium 35 on the surface treated with the plasma of the first polymer resin coating layer to promote ink absorption. It provides a method for producing a material for ink jet printing, comprising the step of coating and drying the ink receiving layer composition comprising ~ 75 parts by weight to form an ink receiving layer.

In one embodiment of the present invention, immediately after forming the first polymer resin coating layer of step (b), between the plasma surface treatment step of step (c) and the ink receiving layer forming step of step (d), or the Medium density polyethylene 60 having a density of 0.926 to 0.940 g / cm3 on the surface of the multifilament yarn nonwoven fabric in which the first polymer resin coating layer is not continuously formed while continuously supplying the multifilament yarn nonwoven fabric after the step of forming the ink receiving layer in step (d). After supplying a molten mixture for forming a polymer resin coating layer mixed at a ratio of ˜90 parts by weight, 5-30 parts by weight of isotactic polypropylene, and 5-30 parts by weight of a milking agent, the multifilament yarn nonwoven fabric and the polymer resin coating layer were formed. The second solid component on the surface of the multifilament yarn nonwoven fabric in which the polymer resin coating layer is not formed by continuously pressing the molten mixture together. It may further comprise the step of forming a resin coating layer.

In the inkjet printing material according to the present invention, the nonwoven fabric layer has a fine thickness of 50 to 1,500 deniers and has an average fiber length of 150 mm or more, preferably 300 mm or more, more preferably 500 mm or more, uncut continuous multifilament yarns. It is a multifilament yarn nonwoven fabric formed by entangled with each other to form a fiber assembly. By using the multifilament yarn nonwoven layer of the long filament length of such a fine thickness, the deformation of the synthetic resin yarn such as polyester, which appears during high-temperature molding by improving the tensile strength, flexural modulus and flexibility of the material can be minimized.

In the inkjet printing material according to the present invention, the first and second polymer resin coating layers are made of a mixture of medium density polyethylene (PE) and isotactic polypropylene, which are flexible, low density, and have excellent tensile strength. When tearing and curling can be prevented, and the surface is treated with plasma, the surface smoothness and adhesion with the ink receiving layer is also excellent.

In addition, in the inkjet printing material according to the present invention, the ink receiving layer comprises porous inorganic particles, a polymer binder, a crosslinking agent, and optionally various additives, so that various inks such as surface gloss, aqueous dye pigment ink, solvent ink, etc. It is excellent in absorbency, color implementability, and ink quick drying property, and can prevent curling phenomenon.

Therefore, the inkjet printing material according to the present invention not only has excellent moldability, but also can quickly realize high-fidelity and high-definition images during inkjet printing, and the obtained advertisements have surface smoothness, glossiness, flexibility, and tensile strength. , Flexural modulus, etc. are excellent in mechanical properties, and curling phenomenon and tearing are hardly generated. Inkjet print material according to the present invention is useful for maximizing the advertising effect.

Hereinafter, an embodiment of an inkjet print material and a manufacturing method thereof according to the present invention will be described in more detail.

1 is a schematic perspective view of a material for ink jet printing according to one embodiment of the present invention.

Referring to Figure 1, the inkjet printing material 101 according to an embodiment of the present invention is a nonwoven fabric layer consisting of multi-filament yarn of 50 ~ 1,500 denier fine (denier), the weight per unit area 50 ~ 200g / m2 And a multifilament yarn nonwoven layer 100 having a tensile strength of 10 to 100 kgf / cm 2.

Nonwoven fabric is generally made of staple fiber yarn obtained by cutting the filament yarn to have an average fiber length of 100 mm or less, but the multifilament yarn nonwoven layer 100 used in the present invention is polyester, polypropylene and poly It consists of at least one synthetic resin selected from the group consisting of amides, and has an average fiber length of at least 150 mm, preferably at least 300 mm, more preferably at least 500 mm, in which uncut continuous multifilament yarns are intertwined in an intertwined fashion to form a fiber aggregate. It is made of multifilament yarn nonwoven fabric. Such multifilament yarns are entangled with each other by needle punching or are bonded in a entangled state with an adhesive or are fused in a tangled state.

The fineness of the multifilament yarn is 50 to 1,500 deniers, preferably 50 to 1000 deniers, and more preferably 50 to 500 deniers. By using such a fine-thick yarn, the surface area is increased to maximize the coating area, and at the same time, the synthetic resin forming the first polymer resin coating layer 200 penetrates into the surface voids present in the multifilament yarn, so that the surface is uniform and smooth. It is possible to give high tensile strength and flexibility to the material by securing the coating property and increasing the coating density. The increase in tensile strength also depends on the fact that the fine filaments are more intertwined within the unit area so that the fiber bundles are not easily released upon tensile deformation.

By using such a non-woven fabric layer of long-fiber multifilament yarn of fine thickness, the tensile strength and flexibility of the material can be improved to minimize the deformation of synthetic resin yarns such as polyester appearing at high temperature molding. Minimization of such deformation can be increased by using a multifilament yarn nonwoven fabric that has undergone a stretching process and a heat setting process to maintain the stretched form.

The first polymer resin coating layer 200 is formed on the multifilament yarn nonwoven fabric layer 100. A second polymer resin coating layer 200 ′ may be selectively formed below the multifilament yarn nonwoven fabric layer 100. The first and second polymer resin coating layers 200 and 200 ′ are 60 to 90 parts by weight of medium density polyethylene having a density of 0.926 to 0.940 g / cm3, 5 to 30 parts by weight of isotactic polypropylene, and 5 to 30 weight of milk whitening agent. It consists of a mixture mixed in a proportion of parts.

As a polymer resin constituting the first and second polymer resin coating layers 200 and 200 ′, a mixed resin of medium density polyethylene and isotactic polypropylene is used to compare advertising placards, banners, and the like, to PVC materials mainly used as advertising materials. When used as an excellent flexibility, light weight, and mechanical properties are excellent and there is a renewable advantage without causing environmental problems.

Polyethylene can be classified into various types such as polymerization pressure, product density, molecular structure, etc. Generally, low density polyethylene (LDPE), medium density polyethylene (MDPE), and high density polyethylene (HDPE) may be classified according to polymerization method, density, and molecular structure. , Linear low density polyethylene (LLDPE). Low-density polyethylene is polymerized by using an initiator such as oxygen or peroxide in an autoclave or tubulat reactor, and polymerized by radical mechanism at high pressure. Is as low as 0.910-0.935 g / cm 3. Since high density polyethylene uses a catalyst such as an organic metal or an oxide, the polymerization is performed at a low pressure, so that there is almost no branching in the polymer, and thus the crystallization degree is high and has a density of about 0.940 to 0.965 g / cm 3. Medium density polyethylene is polymerized at high pressure or low pressure, or is made by mixing high density polyethylene and low density polyethylene, and the density is about 0.926 to 0.940 g / cm 3, which is the intermediate density between low density polyethylene and high density polyethylene. Linear low density polyethylene can be polymerized at medium and low pressure, its molecular structure is similar to that of high density polyethylene, and its density is about 0.915 ~ 0.965 g / cm3 similar to that of low density polyethylene.

Low density polyethylene has the advantages of flexibility, chemical resistance, fluidity above melt point and processability, but has the disadvantage of poor mechanical properties such as tensile strength and flexural modulus.High density polyethylene has excellent electrical insulation and chemical resistance but high hardness. There is a disadvantage in inflexibility, linear low density polyethylene has a disadvantage in that it is expensive compared to other polyethylene resins, heat resistance and printability is inferior. Therefore, in the present invention, the use of medium-density polyethylene is intended to have a sufficiently good tensile strength, flexural modulus, and flexibility for practical purposes.

The first and second polymeric resin coating layers 200, 200 'also include isotactic polypropylene in addition to medium density polyethylene as described above. The isotactic index of the isotactic polypropylene is preferably in the range of 92 to 98% in terms of reinforcing mechanical properties such as tensile strength and flexural modulus.

The isotactic polypropylene used in the present invention is excellent in physical properties such as light weight, excellent mechanical strength, heat resistance, chemical resistance, etc., but it is disadvantageous in low temperature impact resistance, flexibility, cold resistance, and ultraviolet rays. Complementing the disadvantages of the resin with each other and improving the physical properties can be improved flow and adhesion enough to be sufficiently absorbed in the micro voids of the multifilament yarn nonwoven fabric layer (100). Polypropylene is a polymer of propylene using a catalyst such as Ziegler-Natta catalyst, and according to the stereoregularity of the methyl group, atactic polypropylene, syndiotactic polypropylene, isotactic ( isotactic) is classified as propylene. Atactic polypropylene is an amorphous polypropylene in which methyl groups are arranged randomly, with a low melting point and poor mechanical properties and heat resistance. Syndiotactic polypropylene has a three-dimensional structure in which methyl groups are alternately arranged up and down with respect to the plane including the main chain, and are excellent in physical properties but expensive. Therefore, in the present invention, isotactic polypropylene having a three-dimensional structure in which a methyl group is arranged up and down with respect to a plane including a main chain is used in consideration of high crystallinity, high melting point, and excellent mechanical properties and heat resistance. In addition, copolymerized polypropylenes copolymerized with propylene and various kinds of monomers are excellent in impact resistance and transparency, but are not preferable because they are not only poor in mechanical properties such as tensile strength and stiffness but also expensive compared to the above-mentioned homopolypropylenes.

The first and second polymer resin coating layers 200 and 200 'include 5 to 30 parts by weight, preferably 10 to 20 parts by weight of a milky agent to express a color suitable for the needs of the consumer. The opacifier is preferably at least one inorganic particle selected from the group consisting of titanium dioxide, zinc oxide, silica, alumina, calcium carbonate, talc, clay and barium sulfate. When the content of the milky agent is more than 30 parts by weight, the possibility of minute cracks on the coating surface is increased, and less than 5 parts by weight, the possibility that the desired color can not be realized in the material.

The first and second polymer resin coating layers 200 and 200 ′ generally include additives for improving physical properties such as processability, coating property, stability, color, and antistatic properties of a medium density polyethylene and isotactic polypropylene mixture. It may be included in the amount used. To this end, it is preferable that the first and second polymer resin coating layers 200 and 200 'further include an ultraviolet stabilizer, an antioxidant, an antistatic agent and a lubricant.

UV stabilizers are used to prevent polymeric resins from deteriorating and discoloring and brittleness by light, especially ultraviolet light. As the ultraviolet stabilizer, a benzophenone compound, a salicylic acid compound, a benzotriazole compound, a hindered amine compound, or the like can be used. Particularly, in the present invention, TINUVIN 770 (registered trademark of Ciba Specialty Chemical Company) having good compatibility with polypropylene and CHIMASSORB 944 (registered trademark of Ciba Specialty Chemical Company) suitable for polyethylene film were used together to prevent the transition phenomenon.

Antioxidant is a compound that degrades coating property due to deterioration of physical properties, discoloration and decrease of melt flow due to gradual decomposition and oxidization of high molecular compound by oxygen, metal component, etc. in air by light, heat, and mechanical shear force. It is to prevent. As antioxidants, quinones, amines and phenol compounds are mainly used. In the present invention, it is preferable to use a phenolic antioxidant having excellent stability and dilauryl thiodipropionate as a peroxide decomposing agent.

Antistatic agents are used to reduce or eliminate static electricity. Polymer resins such as polyethylene and polypropylene are generally very high in volume specific resistance, and are easily charged with static electricity by friction or the like. Static electricity decreases productivity and causes problems such as fire and electric shock. Especially, it absorbs dust and reduces surface property during coating process. Deterioration of the quality such as a decrease in adhesion to the ink receiving layer 400 is caused. As the antistatic agent, quaternary ammonium compounds, epoxidized amines, fatty acid esters, conductive polymer solutions, metal powders and the like can be used.

The lubricant is used for the purpose of preventing adhesion of the coated surface and the resin and providing fluidity during molding, thereby improving slip performance, reducing molding temperature, shortening molding time, and improving the surface appearance of the molded article. As the lubricant, metal soap, paraffin wax, fatty alcohol, low molecular weight polystyrene, higher fatty acid and the like can be used.

Since these additives have a serious difference in physical properties depending on the type and content, they can be mixed with an appropriate amount to maintain or improve the quality of the product.The additives are light and excellent in mechanical strength, flexibility, and surface smoothness. The first and second polymer resin coating layers 200 and 200 ′ having excellent physical properties may be formed. Therefore, in the present invention, the first and second polymer resin coating layers 200 and 200 ′ are each 0.1-10 parts by weight, preferably 0.5-5.0 parts by weight of UV-refining tablets; 0.1 to 10 parts by weight of antioxidant, preferably 0.5 to 5.0 parts by weight; 0.1 to 10 parts by weight of the antistatic agent, preferably 1.0 to 5.0 parts by weight; And 0.1 to 5 parts by weight, preferably 0.5 to 3.0 parts by weight of lubricant.

If the content of the ultraviolet stabilizer exceeds 10 parts by weight, the moldability deteriorates, and if it is less than 0.1 part by weight, the discoloration possibility increases. If the content of the antioxidant exceeds 10 parts by weight, the moldability deteriorates, and if it is less than 0.1 part by weight, the discoloration possibility increases. When the content of the antistatic agent exceeds 10 parts by weight, the likelihood of significantly lowering the adhesion with the ink receiving layer 400 increases. This is because the surfactant component, which is the main component of the antistatic agent, lowers the surface tension of the surface of the coating layer. When the content of the antistatic agent is less than 0.1 part by weight, the antistatic effect is hardly expected. Excessive use of lubricant will improve coating properties, but difficulties in molding will occur with minor amounts.

In addition, the plasma treatment layer 300 of the first polymer resin coating layer 200 is treated with plasma to improve adhesion to the ink receiving layer. The medium-density polyethylene and the isotactic polypropylene of the first polymer resin coating layer 200 have no polar group inducing strong bonding in chemical structure, and thus have poor adhesion with the ink receiving layer 400. In order to solve this problem, the surface of the non-polar resin coating layer is generally subjected to a surface treatment such as chemical treatment, flame treatment, corona treatment, UV treatment, primer treatment. However, the inventors of the present invention, when the plasma treatment of the surface of the first polymer resin coating layer 200, especially the dry plasma treatment under low temperature and low pressure conditions, because the chemical reaction is limited to a thin surface layer occurs uniformly, the first polymer resin coating layer 200 It is preferable because the treated surface can be stabilized without affecting the bulk physical properties of the). By plasma treatment, polar groups such as carbonyl group, carboxyl group, hydroxyl group, aldehyde group, and amine group are formed on the surface of the first polymer resin coating layer 200 due to the attack of the active species in the plasma state, and thus the ink receiving layer 400 Improves adhesion to the fruit Plasma surface treatment can be performed using a plasma of one or more gases selected from the group consisting of oxygen gas, nitrogen gas, helium gas, and argon gas. In particular, oxygen gas, nitrogen gas, mixed gas of oxygen and nitrogen, argon gas and the like can be used.

The ink receiving layer 400 is formed on the plasma treatment layer 300 of the first polymer resin coating layer 200. The ink receiving layer 400 quickly absorbs various types of aqueous dye inks, aqueous pigment inks, strong solvent inks, weak solvent inks, mild inks, aco inks and oil inks that are ejected from ink jet printers and plotters during ink jet printing. It plays an important role in maximizing advertisement effect by forming an image with excellent color development. The ink receiving layer 400 includes 15 to 30 parts by weight of porous inorganic particles, 15 to 35 parts by weight of a polymeric binder, and 5 to 10 parts by weight of a crosslinking agent to promote ink absorption.

The porous inorganic particles have an average particle diameter of 10 to 300 nm, and preferably at least one selected from the group consisting of silica and alumina. As the porous inorganic particles, silica or alumina can be used directly, or a sol state dispersed in water, alcohol or acid and alkali can be used alone or in combination.

The polymer binder is polyvinyl alcohol (PVA), ethylene vinyl acetate copolymer (EVA), acrylic resin, urethane resin, polyester resin, polyvinylpyrrolidone (PVP), methyl cellulose, ethyl cellulose, hydroxypropyl methyl cellulose ( HPMC) and polyethylene oxide (PEO) is preferably at least one selected from the group consisting of. Of these, polyvinyl alcohol is preferable, and ethylene vinyl acetate copolymer (EVA), acrylic resin or emulsion, urethane resin or water-soluble urethane and PUD (Polyurethane Dispersion), polyester resin or water-soluble polyester and the like can be used. Polyvinylpyrrolidone (PVP), methyl cellulose, hydroxypropylmethyl cellulose (HPMC), polyethylene oxide (PEO), and the like, which are resins, may be used alone or in combination.

The crosslinking agent crosslinks the binder component and the porous inorganic particles to increase water resistance and surface strength. Examples of the crosslinking agent include glyoxal, oxazoline, isocyanate, epoxide, aziridine, melamine formaldehyde, boric acid compounds such as boric acid and borax, and zirconium compounds such as zirconyl acetate and zirconyl chloride. Can be.

In addition, the ink receiving layer 400 may further include at least one additive selected from the group consisting of a fixing agent, a fluorescent dye, a light diffusing agent, a pH adjusting agent, an antioxidant, a UV stabilizer, a dispersant, an antifoaming agent, a wetting agent, a leveling agent, and a surface control agent. Can be. The content of these additives is not particularly limited and may be any content commonly used in the art.

Hereinafter, the manufacturing method of the inkjet printing material which concerns on this invention is demonstrated in detail.

2 is a conceptual view illustrating a method of manufacturing an inkjet print material 101 according to an embodiment of the present invention.

First, a nonwoven fabric composed of multifilament yarns having a fine thickness of 50 to 1,500 deniers from the fabric feed roller 60, and having a weight per unit area of 50 to 200 g / m2 and a tensile strength of 10 to 100 kgf / cm2. 70) are supplied continuously. Subsequently, 60 to 90 parts by weight of a medium density polyethylene having a density of 0.926 to 0.940 g / cm3, 5 to 30 parts by weight of isotactic polypropylene, and 5 to 30 parts by weight of a milk agent on one surface of the multifilament yarn nonwoven fabric 70 to be supplied. A molten mixture 20 for forming a polymer resin coating layer mixed at a ratio is supplied. The molten mixture 20 for forming the polymer resin coating layer is discharged from the extruder 10 in which a cylinder (not shown) internal temperature is maintained at 150 to 320 ° C and the temperature of the discharge die 11 is maintained at 240 to 260 ° C. The roller 30 is supplied onto one surface of the multifilament yarn nonwoven fabric 70. The multifilament yarn nonwoven fabric 70 supplied from the fabric feed roller 60 and the molten mixture 20 for forming the polymer resin coating layer supplied from the extruder 10 may be a silicon rubber roller 40 and a compression roller rotating in contact therewith ( 50 are continuously pressed together. As a result, the multifilament yarn nonwoven fabric 80 having the first polymer resin coating layer formed on one surface of the multifilament yarn nonwoven fabric 70 is formed, which is wound around the winding roller 90.

Subsequently, the surface of the first polymer resin coating layer (200 in FIG. 1) of the multifilament yarn nonwoven fabric 80 having the first polymer resin coating layer formed thereon is one selected from the group consisting of oxygen gas, nitrogen gas, helium gas, and argon gas. The above gas is used for plasma treatment. As described above, this is for improving the adhesiveness with the ink receiving layer. Thin and thin polar groups such as carbonyl group, carboxyl group, hydroxyl group, aldehyde group, amine group, etc. are formed on the surface of the first polymer resin coating layer (200 in FIG. 1) by plasma surface treatment, particularly by dry plasma surface treatment under low temperature and low pressure conditions. A uniform plasma treatment layer (300 of FIG. 1) is formed so as not to affect the bulk physical properties of the first polymer resin coating layer (200 of FIG. 1) and to improve adhesion to the ink receiving layer (400 of FIG. 1). Plasma surface treatment can be performed using a plasma of one or more gases selected from the group consisting of oxygen gas, nitrogen gas, helium gas, and argon gas. In particular, oxygen gas, nitrogen gas, mixed gas of oxygen and nitrogen, argon gas and the like can be used. Plasma surface treatment is performed at atmospheric pressure (atmospheric pressure), the plasma excitation frequency is controlled to 1 ~ 15MHz, the plasma excitation power is adjusted to 50 ~ 300 Watt.

Finally, the ink receiving layer (400 of FIG. 1) is coated on the plasma treatment layer (300 of FIG. 1) of the first polymer resin coating layer. To this end, first, 15-30 parts by weight of porous inorganic particles, 15-35 parts by weight of a polymeric binder, and 5-10 parts by weight of a crosslinking agent are mixed in 35-75 parts by weight of a dispersion medium, uniformly dissolved and dispersed, and an ink-receiving layer. The composition for preparation is prepared. The types of the porous inorganic particles, the polymer binder, and the crosslinking agent are as described above. The dispersion medium of the ink aqueous layer composition is not particularly limited as long as it can dissolve or at least uniformly disperse the polymer binder, but preferably includes 30 to 60 parts by weight of water and 5 to 15 parts by weight of an organic solvent mixed with water. In particular, from the viewpoint of workability and environmental problems, water or a mixed solvent containing water as a main component is preferable. As an organic solvent used with water, Aliphatic alcohols, such as methanol, ethanol, butanol, isopropanol; Ketones such as acetone and methyl ethyl ketone; Various kinds of solvents such as methyl cellosolve, ethyl cellosolve and glycol ethers can be used. In addition to the above components, the ink receiving layer composition may contain an appropriate amount of additives such as a fixing agent, a fluorescent dye, a light diffusing agent, a pH adjusting agent, an antioxidant, a UV stabilizer, a dispersing agent, an antifoaming agent, a humectant, a leveling agent, and a surface adjusting agent. have.

Coating the ink receiving layer (400 of FIG. 1) on the plasma treatment layer (300 of FIG. 1) of the first resin coating layer prepared in the ink receiving layer composition prepared as described above, the material for inkjet printing according to the present invention is completed. The coating method of the composition for ink receiving layers is not specifically limited. For example, using a coater such as a comma coater, a slot die coater, a gravure coater, and a microgravure coater, the composition of the ink receiving layer has a constant thickness of the first polymer resin coating layer. Coating over the treatment layer (300 in Figure 1).

In the present invention, the multifilament yarn nonwoven fabric is optionally formed immediately after the first polymer resin coating layer forming step or between the plasma surface treatment step and the ink receiving layer forming step, or after the ink receiving layer forming step, in the same manner as the method of forming the first polymer resin coating layer. 60 to 90 parts by weight of medium density polyethylene having a density of 0.926 to 0.940 g / cm3, 5 to 30 parts by weight of isotactic polypropylene, and oil on the opposite surface of the multifilament yarn nonwoven fabric having the first polymer resin coating layer not continuously formed upon continuous feeding After supplying the molten mixture for forming the polymer resin coating layer mixed at a ratio of 5 to 30 parts by weight of the whitening agent, the first polymer resin coating layer is not formed by continuously pressing the multifilament yarn nonwoven fabric and the molten mixture for forming the polymer resin coating layer together. Coating the second polymer resin on the surface of the non-filament A it can be formed.

The first and second polymer resin coating layers are additives selected from UV stabilizers, antioxidants, antistatic agents and lubricants for improving the processability, coating properties, stability, color, antistatic properties, etc. of the medium density polyethylene and isotactic polypropylene mixtures. It may include in the amount commonly used in the art.

Hereinafter, the present invention will be described in more detail with reference to the following examples, which are intended to further illustrate the present invention, and the scope of the present invention is not limited by the embodiments.

Example  One

Non-woven fabric consisting of continuous polyethylene terephthalate (PET) multifilament yarn with a fineness of 1,000 deniers and an average fiber length of 500 mm or more, with a weight of 100 g / m 2, a tensile strength of 50 kgf / cm 2, and a thickness of 170 μm (70) Was supplied continuously from the raw material supply roller 60 to the silicon rubber roller 40 and the compression roller 50 which rotates in contact with it.

Next, 70 parts by weight of a medium density polyethylene (Total Chemicals, HF-513) having a density of 0.934 g / cm3 and an isotactic polypropylene (POLYPRO 4017M, isotactic index: 95%) having a density of 0.90 g / cm3 30 Parts by weight, UV stabilizer (CIBA Specialty Chemical, TINUVIN 770 and CHIMASSORB 944 = 30:70 weight ratio) 1.0 weight part, antioxidant (Songnox 1290: Dilauryl Thiodipropionate = 80:20 weight ratio) 1.0 weight Part, higher fatty acid ester compound antistatic agent (ASTK Chemicals, AST) 3.0 parts by weight, high melting point synthetic wax lubricant (Shin-Won Chemical, HI-LUBE) 0.5 parts by weight, and titanium dioxide particle whitening agent having an average particle diameter of about 8 μm 10.0 The weight part mixture was put into the extruder 10 in which the cylinder internal temperature was 150-320 degreeC, and the temperature of the discharge die 11 was 240-260 degreeC, and it discharged. Before the multifilament yarn nonwoven fabric 70 enters the silicon rubber roller 40 and the compression roller 50 which rotates in contact with the multifilament yarn nonwoven fabric 70, the molten mixture 20 for forming the polymer resin coating layer is formed on the multifilament yarn nonwoven fabric 70. Feed over the surface. The multifilament yarn nonwoven fabric 70 and the molten mixture 20 for forming the polymer resin coating layer are continuously passed through the silicon rubber roller 40 and the compression roller 50 rotating in contact with the multifilament yarn. A multifilament yarn nonwoven fabric 80 having a first polymer resin coating layer (200 in FIG. 1) having a thickness of about 50 μm on one surface of the nonwoven fabric 70 was wound on a winding roller 90.

After rewinding the multifilament yarn nonwoven fabric 80 in which the first polymer resin coating layer thus obtained is formed on the fabric feed roller 60, the first polymer resin coating layer is not formed by repeating the above-described first polymer resin coating layer forming process. On the surface of the multifilament yarn nonwoven fabric, a second polymer resin coating layer (200 ′ of FIG. 1) having a thickness of about 50 μm was further formed.

Subsequently, the plasma gas generated by exciting the mixed gas of oxygen and argon (mixed mass ratio = 5:95) under atmospheric pressure in an in-line plasma generation equipped with a high-frequency generator having an excitation frequency of 10 MHz and an excitation power of 250 W is used. 1 The first polymer resin coating layer 200 of the multifilament yarn nonwoven fabric 80 on which the polymer resin coating layer (200 in FIG. 1) was formed was treated. At this time, the multifilament yarn nonwoven fabric 80 having the first polymer resin coating layer (200 of FIG. 1) formed was surface treated for about 30 seconds while passing the inside of the inline plasma generator at a speed of 1 m / min. The injection amount of the mixed gas was maintained at 3 L / min using a mass flow controller (mass flow controller).

Finally, 20 parts by weight of porous alumina particles having an average particle diameter of about 200 μm, 22 parts by weight of polyvinyl alcohol resin (polymerization degree 3,500, saponification degree 92), 7 parts by weight of boric acid, and 45 parts by weight of water and 5 parts by weight of methanol The composition for ink-receiving layer having a viscosity of 50 cps obtained by dispersing was coated on a plasma treatment layer 300 of the first polymer resin coating layer using a slot die coating machine at a coating speed of 10.0 m / min and dried at a temperature of about 100 ° C. to about 35 An ink receiving layer (400 in Fig. 1) having a thickness was formed to complete a material for inkjet printing.

3 shows a SEM image of the surface of the ink receiving layer of the advertising material for inkjet printing obtained in Example 1. FIG. Referring to FIG. 3, it can be seen that the surface of the ink receiving layer has a spherical shape that can absorb various kinds of inks well. 4 shows a cross-sectional SEM photograph of the ink receiving layer of the advertising material for inkjet printing obtained in Example 1. FIG. Referring to Figure 4, it can be seen that the ink receiving layer is formed in a uniform thickness.

Example  2 ~ 4

For inkjet printing according to the same method as Example 1 except for changing the composition of the polymer resin composition introduced into the extruder to form the first and second polymer resin coating layers (200, 200 ') to the content shown in Table 1 The material was completed.

Comparative example  1-2

For inkjet printing according to the same method as Example 1 except for changing the composition of the polymer resin composition introduced into the extruder to form the first and second polymer resin coating layers (200, 200 ') to the content shown in Table 1 The material was completed.

Comparative example  3

Inkjet printing according to the same method as Example 1 except for changing the composition of the polymer resin composition introduced into the extruder to form the first and second polymer resin coating layers (200, 200 ') as shown in Table 1 The dragon material was completed. As can be seen from Table 1, this comparative example is a base resin for forming the first and second polymer resin coating layers, instead of a mixture of medium density polyethylene and isotactic polypropylene (LG chemistry, LC051R, apparent density: 0.48 g). / cm3). The cylinder internal temperature of the extruder was 150-240 degreeC, and the temperature of the discharge die was maintained at 180-200 degreeC.

Comparative example  4

In order to form the first and second polymer resin coating layers 200 and 200 ′, the composition of the polymer resin composition introduced into the extruder was changed to the content shown in Table 1, and the nonwoven fabric 70 had a fineness of 1,000 deniers and an average fiber length of 100 mm. Non-woven fabric composed of the following short-fiber PET staple fiber yarn, inkjet according to the same method as in Example 1 except that a nonwoven fabric 70 having a weight of 90 g / m 2, a tensile strength of 16 kgf / cm 2, and a thickness of 165 μm was used. The material for printing was completed.

Comparative example  5

In order to form the first and second polymer resin coating layers 200 and 200 ′, the composition of the polymer resin composition introduced into the extruder is changed to the content shown in Table 1, and the surface treatment of the first polymer resin coating layer 200 is performed by plasma. A material for inkjet printing was completed in the same manner as in Example 1 except that the corona discharge surface treatment was performed instead of the surface treatment.

The corona discharge surface treatment was used as a model HK 7000 Corona processor of Korea Wave Co., Ltd., the operating current is set to 10 amperes (A), the treatment speed is 5m / min, the treatment time is set to 30 seconds.

TABLE 1

Example Comparative example One 2 3 4 One 2 3 4 5 Medium density
Polyethylene 70 70 80 80 100 0 0 70 70 Isotactic
Polypropylene 30 30 20 20 0 100 0 30 30 PVC 0 0 0 0 0 0 100 0 0 UV stabilizer 1.0 1.0 1.0 1.0 1.0 1.5 1.0 1.0 1.0 Antioxidant 1.0 1.0 1.0 1.0 1.0 1.5 1.0 1.0 1.0 Antistatic agent 3.0 3.0 3.0 3.0 3.0 3.0 2.0 2.0 2.0 Activator 0.5 1.0 0.5 1.0 1.0 1.0 1.0 1.0 1.0 Bleach 10.0 20.0 10.0 20.0 20.0 20.0 20.0 20.0 20.0

Table 2 shows the measurement results of various physical properties of the materials produced in Examples 1 to 4 and Comparative Examples 1 to 5. The measuring method of the various physical properties of Table 2 is as follows.

thickness

Measurement was made according to the conditions and methods specified in ASTM D645.

weight

Measurement was made according to the conditions and methods specified in ASTM D646.

density

Measurement was made according to the conditions and methods specified in ASTM D1505.

The tensile strength( tensile strength )

Measurement was made according to the conditions and methods specified in ASTM D638.

Flexural modulus ( flexural modulus )

Measurement was made according to the conditions and methods specified in ASTM D790.

Absorption rate ( water absorption )

Measurement was made according to the conditions and methods specified in ASTM D570.

Whiteness ( whiteness )

It was measured using a Spectroscan from GretagMacbeth, and the measurement conditions were D50 / 2 ° / Abs / No.

Polish( gloss )

Measurements were made with BYK Gardner's Micro-Tri-Gloss and the measurement angles were 60 ° and 85 °.

Surface smoothness ( surface flatness )

After the plasma surface treatment or the corona surface treatment on the first polymer resin coating layer 200, the sensory evaluation was performed based on the following criteria.

◎: 0.5 mm pinhole and dust per 1 m2 or less, each with no bend or fish eye on the surface

○: When there are more than 3 pinholes and 5 or less dusts of 0.5 mm in size per 1 m2, and there are slight bends and fisheye on the surface.

(Triangle | delta): When there are more than five pinholes and dust of size 0.5mm per 1m <2>, and there are remarkable bending and fisheye phenomenon on the surface.

TABLE 2

Example Comparative example One 2 3 4 One 2 3 4 5 Thickness (㎛) 273 270 275 273 277 276 277 275 270 Weight (g / ㎡) 199.3 202.5 203.5 207.5 210.5 204.2 346.2 209 202.5 Density (g / cm 3) 0.73 0.75 0.74 0.76 0.76 0.74 1.25 0.76 0.75 The tensile strength
(kg / ㎠) 170 175 160 165 135 155 105 140 165 curve
Modulus
(kg / ㎠) 12,500 13,000 11,500 12,000 10,500 12,500 10,000 13,000 12,500 Absorption rate (%) ≤0.3 ≤0.5 ≤0.3 ≤0.5 ≤0.5 ≤0.5 ≤0.5 ≤0.5 ≤0.5 Whiteness 94.6 96.4 94.8 96.1 95.8 95.6 95.5 95.8 96.4 Polish 60 ° 7.5 4.4 6.3 3.8 3.8 5.2 4.3 4.1 4.4 85 ° 13.4 8.7 10.2 7.2 7.9 9.3 8.6 7.2 8.7 surface
Smoothness ◎ ◎ ◎ ◎ ◎ ◎ ◎ ○ △

Referring to Table 2, the advertising materials of Examples 1 to 4 according to the present invention have excellent quality characteristics in terms of weight, density, tensile strength, flexural modulus, gloss, whiteness and surface form activity as well as excellent molding processability. It could be confirmed that having. In addition, since the low density polyethylene is the main component of the polymer coating layer, the economic efficiency is also excellent.

In particular, in Examples 1 to 4 using a nonwoven fabric made of continuous polyester multifilament yarn of long fibers and a resin composition of medium density polyethylene and isotactic polypropylene, it was found that both tensile strength and flexural modulus were excellent. Can be. However, it can be seen that the tensile strength and flexural modulus of Comparative Example 1 using only non-woven fabric made of continuous polyester multifilament yarn of long fiber but using only medium density polyethylene as the polymer resin coating layer are lower than those of Examples 1-4. . Tensile strength and flexural modulus of the nonwoven fabric made of continuous polyester multifilament yarn of long fiber but using only isotactic polypropylene as the polymer resin coating layer were about the same level as those of Examples 1 to 4 There is a problem in that the stability must contain a large amount of UV stabilizer and antioxidant in order to use in particular outdoor advertising purposes.

The advertising materials for inkjet printing of Examples 1 to 4 have both tensile strength and flexural modulus than those of Comparative Example 4 using a nonwoven fabric composed of a material according to Comparative Example 3 using PVC resin as a polymer resin coating layer and short fibers of 100 mm or less. It can be seen that it is excellent. In addition, the material according to Comparative Example 3 using the PVC resin was denser and heavier than the advertising material for inkjet printing of Examples 1 to 4.

In the case of Examples 1 to 4 and Comparative Examples 1 to 5, the difference in water absorption was not large, but a slight difference was observed depending on the content of the milky agent. It is sufficient to be used as an advertising material for inkjet printing because the inorganic particles contained in the milky agent absorb moisture, and are particularly excellent in water resistance and moisture resistance.

Plasma surface treated Examples 1 to 4 and Comparative Examples 1 to 4 had better surface smoothness than Corona surface treated Comparative Example 5, but in Comparative Example 4, non-woven short fibers were irregularly polymers as fine residues. The phenomenon which exposed on the resin coating layer was confirmed. In Comparative Example 5, after the corona surface treatment, the pinholes, craters, and fisheyes were remarkable on the surface, and the thickness of the surface treatment was uneven, and the bulk properties of the material and the surface smoothness of the ink receiving layer and It affects the coating thickness, which affects the drying speed and appearance quality of the ink.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and the general knowledge in the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the following claims. Anyone with a variety of modifications can be made, as well as such changes are within the scope of the subject matter of the claims.

1 is a schematic perspective view of a material for inkjet printing according to one embodiment of the present invention.

2 is a conceptual view illustrating a method of manufacturing a material for inkjet printing according to an embodiment of the present invention.

3 shows a SEM image of the surface of the ink receiving layer of the advertising material for inkjet printing obtained in Example 1. FIG.

4 shows a cross-sectional SEM photograph of the ink receiving layer of the advertising material for inkjet printing obtained in Example 1. FIG.

<Explanation of symbols for the main parts of the drawings>

10 compressor 11 discharge die

20: Melt mixture for polymer resin coating layer formation

30: auxiliary guide roller

40: silicon rubber roller 50: compression roller

60: fabric feed roller 70: multifilament yarn nonwoven fabric

80: multifilament yarn nonwoven fabric having a first polymer resin coating layer

90: winding roller

100: multifilament yarn nonwoven layer

101: inkjet printing material according to an aspect of the present invention

200: first polymer resin coating layer

200 ': second polymer resin coating layer

300: plasma treatment layer of the first polymer resin coating layer

400: ink receiving layer

Claims (12)

A nonwoven fabric layer composed of 50 to 1,500 denier fine filaments of multifilament yarn, wherein the weight per unit area is 50 to 200 g / m 2, and the tensile strength is 10 to 100 kgf / cm 2; As the first polymer resin coating layer formed on the multifilament yarn nonwoven layer, 60 to 90 parts by weight of medium density polyethylene having a density of 0.926 to 0.940 g / cm3, 5 to 30 parts by weight of isotactic polypropylene, and 5 to 30 parts by weight of milk whitening agent A first polymer resin coating layer comprising a mixture mixed at a ratio, and whose surface is treated with plasma; And An ink receiving layer formed on the surface treated with the plasma of the first polymer resin coating layer, the ink including 15 to 30 parts by weight of porous inorganic particles, 15 to 35 parts by weight of a polymeric binder, and 5 to 10 parts by weight of a crosslinking agent to promote ink absorption. An ink jet printing material, comprising a receiving layer. The second polymer resin coating layer formed on the lower portion of the multifilament yarn nonwoven fabric layer according to claim 1, wherein 60 to 90 parts by weight of medium density polyethylene having a density of 0.926 to 0.940 g / cm3, 5 to 30 parts by weight of isotactic polypropylene, And a second polymer resin coating layer comprising a mixture mixed at a ratio of 5 to 30 parts by weight of a milk whitening agent. The multifilament yarn of the multifilament yarn nonwoven layer is made of one or more selected from the group consisting of polyester, polypropylene and polyamide, and has an average fiber length of 150 mm or more. Material for inkjet printing. According to claim 1 or claim 2, wherein the first and second polymer resin coating layer is 0.1 to 10 parts by weight of UV stabilizer, 0.1 to 10 parts by weight of antioxidant, 0.1 to 10 parts by weight of antistatic agent and 0.1 to 5 parts by weight of lubricant A material for ink jet printing, further comprising. The material for inkjet printing according to claim 1 or 2, wherein the isotactic index of the isotactic polypropylene is 92 to 98%. According to claim 1 or claim 2, wherein the milking agent of the first and second polymer resin coating layer at least one selected from the group consisting of titanium dioxide, zinc oxide, silica, alumina, calcium carbonate, talc, clay and barium sulfate The material for inkjet printing characterized by being an inorganic particle. The polymer binder of the ink receiving layer is polyvinyl alcohol (PVA), ethylene vinyl acetate copolymer (EVA), acrylic resin, urethane resin, polyester resin, polyvinylpyrrolidone (PVP). ), Methyl cellulose, ethyl cellulose, hydroxypropyl methyl cellulose (HPMC) and polyethylene oxide (PEO) at least one selected from the group consisting of materials for ink jet printing. The inkjet print material of claim 1 or 2, wherein the porous inorganic particles of the ink receiving layer have an average particle diameter of 10 to 300 nm and at least one selected from the group consisting of silica and alumina. The ink receiving layer of claim 1 or 2, wherein the ink receiving layer is selected from the group consisting of a fixing agent, a fluorescent dye, a light diffusing agent, a pH adjusting agent, an antioxidant, a UV stabilizer, a dispersant, an antifoaming agent, a wetting agent, a leveling agent, and a surface adjusting agent. Inkjet print material, characterized in that it further comprises one or more additives. (a) A nonwoven fabric composed of 50-1500 denier microfilament multifilament yarns, which continuously supplies a multifilament yarn nonwoven fabric having a weight of 50 to 200 g / m2 and a tensile strength of 10 to 100 kgf / cm2. Making; (b) 60 to 90 parts by weight of medium density polyethylene having a density of 0.926 to 0.940 g / cm3, 5 to 30 parts by weight of isotactic polypropylene, and 5 to 30 parts by weight of milk whitening agent on one surface of the supplied multifilament yarn nonwoven fabric The multifilament yarn nonwoven fabric having the first polymer resin coating layer formed thereon is formed by continuously pressing the multifilament yarn nonwoven fabric and the polymer resin coating layer forming melt mixture while supplying a molten mixture for forming the polymer resin coating layer mixed with Making; (c) plasma treating the surface of the first polymer resin coating layer using a plasma of at least one gas selected from the group consisting of oxygen gas, nitrogen gas, helium gas, and argon gas; And (d) 15 to 30 parts by weight of porous inorganic particles, 15 to 35 parts by weight of a polymeric binder, 5 to 10 parts by weight of a crosslinking agent, and a dispersion medium 35 on the surface treated with the plasma of the first polymer resin coating layer to promote ink absorption. Coating and drying the composition for an ink-receiving layer comprising ~ 75 parts by weight to form an ink-receiving layer, characterized in that it comprises a method for producing a material for inkjet printing. The method of claim 10, wherein immediately after forming the first polymer resin coating layer of step (b), between the plasma surface treatment step of step (c) and the ink receiving layer forming step of step (d), or (d) After the ink-receiving layer forming step of step), the multifilament yarn nonwoven fabric is continuously supplied and the medium density polyethylene having a density of 0.926 to 0.940 g / cm3 After supplying the molten mixture for forming the polymer resin coating layer mixed in the ratio of 5 parts by weight, 5-30 parts by weight of isotactic polypropylene, and 5-30 parts by weight of milk whitening agent, the multifilament yarn nonwoven fabric and the melt for forming the polymer resin coating layer The second polymer resin is formed on the surface of the multifilament yarn nonwoven fabric in which the polymer resin coating layer is not formed by continuously pressing the mixture together. The method for ink-jet printing material according to claim 1, further comprising forming a tingcheung. The method of claim 10, wherein the dispersion medium comprises 30 to 60 parts by weight of water and 5 to 15 parts by weight of an organic solvent mixed with water.

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