TW539790B - Synthetic paper with excellent printability - Google Patents

Abstract

A synthetic paper with an excellent printability comprises 50 to 80% of a synthetic paper substrate layer and 20 to 50% of a surface coating layer. The surface polarity of the synthetic paper substrate layer is modified by the polyester containing reactive functional groups to increase the adhesion of the surface coating layer. The surface coating layer is introduced with 3 to 15% of an epoxy to form a cross-linking with the reaction groups in the synthetic paper substrate layer. The synthetic paper formed of a modified synthetic paper substrate layer and a suitable surface coating layer has a good surface strength and an excellent printability.

Description

539790 V. Description of the invention (1) The present invention is about a person who inserts # 7θ / species with a novel group δ into paper with good printing and ink drying speed. Guang μ's was developed as early as the 1970's. 46-40794 The method revealed was to add 0 filler material to a thermoplastic resin and extend it biaxially from the extruder to obtain a white film. Preliminary printability and pencil writing Sex. This: The fine inorganic powder filling material is uniformly dispersed in the thermoplastic resin during the thermoplastic process to extend the processing of the thermoplastic resin, so that the surface and the interior of the resin are microvoids, so that the fine pores are colored, lightweight, printable, and Writing nature. However, this synthetic paper still basically has many problems such as powder removal on the paper surface, or the printing speed is too slow. Generally, manufacturers who manufacture synthetic paper in order to improve the drying of inks will use powder fillers in the synthetic paper to make the surface of the synthetic paper have better ink absorption or ink drying speed. The inorganic powder on the paper surface layer is easy to fall off. In this process, the inorganic powder falls off and changes into the ink. Eventually, the printing quality of the synthetic paper is changed and the powder is removed. Generally, the synthetic paper has excellent applications such as synthetic paper. After 5 to 65% of the micro-mixed chain, the paper is formed. In the principle resin of this synthetic paper, the fine structure is formed during the warp, so that the general paper such as syntheticity is missing, for example, the print speed is too slow. Add more fines to the square. However, after the over-addition process, it will cause the closing and poor ink. In order to reduce the formulation, the ink adsorption of the present invention means that the patented fine powder inorganic longitudinal and horizontal paper has been printed by the introduction of a push-processed vertical and horizontal void forming paper with white sheets. The problem of ink drying, as a large amount of inorganic inorganic powder knives are synthesized into 轼, and the nature of printing is overcoming.

Page 5 539790 V. Description of the invention (2) Adding too much material to the internal process of adding too little paper, the combination will ultimately affect the surface of the paper in order to change it to have a more extensive surface treatment agent. The antistatic adsorption is poor, the surface treatment is poor, and the surface is dissolved into the ink and is missing. The other (po1ye thy 1 ink has very good and very good oil, which often causes a lack, usually the amount, such as the time, the printing effect of the paper formed on the surface is good and the synthesized printing is used. The earlier one contains a physic agent Due to the treatment of the surface treatment agent, the dry and coating layer of the absorbent ink in the patent e Neimi can be distributed in the vertical direction by the ink absorption rate. The paper is suitable for the oil brush. The square quaternary ammonium of the future prevents the synthetic inks that have a compound and a compound from being improved by the water conductivity. The laterally extending fine pores are too poor and the ink is dry. There is a formula, such as the salt press. Therefore, the paper-forming paper-based paper is contaminated. The speed method is that the special acrylic ammonium salt can be changed to the gray water-based interlayer printing and the problem, but after the inorganic powder filling process, the synthesis will be less. As a result, the drying speed of printing inks is slowed down, and the phenomenon of powder removal is missing. The formula is proposed, in which the surface of the main synthetic paper is coated with a layer of copolymer of 5 0 -1 〇 6 2 4 to make The surface of the paper is good at the agglomeration of synthetic paper surface dust, which often makes its resistance to adhesion poor. The surface treatment of the printed matter does not reveal the color and luster. For the synthesis, it has a very good ink pair but the water changes. The surface treatment agent mentioned is polyethyleneimine ne) and its derivatives. Polyethyleneimine is usually used for oil. Therefore, the speed of synthetic paper coated with this surface treatment agent is' but polyethyleneimine has a very strong Hydrophilic, poor water resistance. In order to improve the poor water resistance of the surface treatment agent, a suitable cross-linking composition is introduced.

539790 V. Description of the invention (3) --- Injury, so that the coating layer has proper cross-linking. For example, the surface treatment agent used in U.S. Patent No. 442 0503 is composed of an acrylic copolymer containing a quaternary ammonium salt, a polyamine polyamidoamine 3-chloro-1,2-propylene oxide derivative (Polyaminep 〇lyamide epichl〇r〇hydrin adduct) and polyethylene 1, amine, of which polyethyleneimine and polyamine polyamine 3 monochloro- 丨, 2-% oxypropane derivatives play a cross-linking role, after this cross After the bonding, the water resistance of the coating layer can be improved, so that the surface of the synthetic paper has a higher wet strength (Uet pick resistance). Therefore, during the printing process, the surface treatment of this synthetic paper is Causes the ink to be contaminated. However, the synthetic paper coated with this type of surface treatment agent still has its defects. Generally, this type = after a long period of storage, the coating layer will be transformed to make it absorb ink. From the point of view of the surface treatment agent mentioned above, although the surface treatment agent is suitable for printing on a 4b of a paper, the right is done. B :: Some changes 4 'but there are still some problems Unexplainable and right: Nine ',', cause, is a polyolefin ef in resin 2i? = nP〇lar), general synthetic paper is made by blending polyolefin with non-finished filler # @ This synthetic paper itself also has a character J f: sexual f ', and most surface treatment agents are mostly polar Polymerization: Surface treatment agent with ΐ polarity and non-polar ir: ir adhesion, so it is often used to improve the quality of synthetic paper: == the same _ 'often derived from synthetic paper surface strength pi, 4 port The surface strength of the finished paper, such as dry surface strength (insufficient dryness = =, wet pick resistance). The coating layer comes off and dissolves into the ink during printing. 'The printing quality is 539790. 5. The description of the invention (4) is worse. The purpose of the present invention is to solve the problems that arise, so to provide a degree of synthetic paper. The polyester of the main reactive functional group of the present invention is coated on one or both surfaces of the modified layer. Thus, as the synthetic paper The epoxy resin in the base coating layer and the base layer of the synthetic paper can be very strong. The use of a surface coating layer to improve the overall synthetic paper can still maintain good. The synthetic paper for the purpose of the invention includes: (A) synthetic paper Total weight 50 ～ including The synthetic surface of the above-mentioned one-layer synthetic cloth with strong characteristic attachments is strong. The surface of this paper is superior to the bondability of the paper base. The degree of the paper. The surface of the bright printed synthetic paper Layer, and epoxy resin reactivity 'so it' depends on the quality of the printing agent to modify the adaptability and the base layer and on the surface of the surface of the functional group on the surface of the surface of the synthetic paper is strongly introduced into the surface of the synthetic paper coating It will be clear from the surface coating layer that at the time, the synthetic paper base layer with 80% by weight of excellent printing suitability is packaged with (a) 50-85% by weight of polyolefin resin, ( b) 5 ~ 30% by weight of polymer with reactive functional groups, (c) 10 ~ 40% by weight inorganic powder filler, based on the weight of the synthetic paper beauty layer; and, ^ '' (B) a surface coating layer of 20 to 50% by weight of the total weight of the synthetic paper, the surface coating layer is coated on one or both sides of the base layer of the synthetic paper, and θ its package ^ · (a) 15 ~ 40 % By weight thermoplastic resin, dagger · (b) 45 ~ 70% by weight inorganic powder filling , (C) 3~15% by weight of the epoxy resin 'to the weight of the surface coating layer

Page 8 " --- 539790

V. Description of the invention (5) as the benchmark. —The beauty of the design of synthetic paper is that the focus is on 1) the introduction of the main body of the synthetic paper that is reactive to improve the composition of the nc surface coating layer There is a proper bridge between the printable surface coating and the synthetic paper. Therefore, π1: ⑻ 'can have good surface strength such as dry strength, wet strength, and different printability such as ink drying and ink absorption. The synthetic paper base layer of the present invention includes 50 to 85% by weight of a polyolefin resin, 5 to 30% by weight of a reactive functional group polyester, and 10 to 40% by weight of an inorganic powder filler. . The formation method is as follows: after the above components are blended, and then stretched unidirectionally or bidirectionally (vertically and horizontally), a white film is obtained. The melting point range of the polyolefin resin used is preferably i0 ° C to 190C ', and the melt index (MI) range is preferably 0.5 to 10g / mill; suitable polysmoky resin may be Specialized for polyethylene, polypropylene, and ethylene-propylene copolymers. Specific examples include grafted polyethylene, polypropylene, ethylene-propylene random copolymer, ethylene-propylene block copolymer, etc. . In the case of the ethylene copolymer, the content of the ethylene component is preferably 20 to 50%, and most preferably 30 to 40%. Regarding the polyester having a reactive functional group contained in the synthetic paper base layer, the reactive functional group may be a tertiary group, an amine group, an alcohol group, or an epoxy group. This combination > the reactive functional group contained in the paper-forming base layer can be combined with the surface coating layer

Page 9 539790

V. Description of the invention (6) The epoxy groups in the J-oxygen resin generate bridging bonds, whereby the surface coating layer and the synthetic paper base layer can have strong adhesion. Therefore, according to the present invention, while the surface coating layer is used to improve the printability of the overall synthetic paper, the overall synthetic paper can still maintain a good surface strength. The amount of the reactive functional polyester is preferably 5 to 30%, and more preferably 10 to 20%. Too much addition will be detrimental to the tensile strength of the base layer of synthetic paper. This will affect the production suitability of synthetic paper. Too little addition will not significantly improve the polarity of the surface of the base layer of synthetic paper, which will be detrimental to the adhesion of inks and surface treatment agents. Sex. The polyester having a reactive functional group according to the present invention may be a polyester having a carboxyl group, such as trimellitic acid copolyester, which may use isophthalic acid and sulfonic acid isophthalic acid (5-sulfoisophthalic acid), trimellitic acid, 1,4-cyclohexane dimethanol, diethylene glycol, etc., are prepared by esterification copolymerization reaction. The trimellitic copolyester has an intrinsic viscosity in the range of, for example, 0.15 to 0.40, and an acid value in the range of 20 to 60. The polyester having a reactive functional group of the present invention may also be a polyester having an amine group, which can be prepared by copolymerization reaction using amines, diacids, and diols. Suitable amines can be diethylene triamine and triethylene tetraamine. Suitable diacids can be adipic acid, terephthalic acid, iSOphthalic acid

Page 10 The filling material of this hair, the density of which is added by one-way or two-degree structure degree and the expression, polyene, if it will be quantified, the same paper base layer to 5 // m most (C a C 〇3), algal soil CdU, this paper into a paper base 539790 V. Description of the invention (7) One of the suitable alcohols can be ethylene glycol, propylene glycol, diethylene glycol ) Wait. The polyester having a reactive functional group according to the present invention may also be a polyether having an epoxy group, for example, epoxy cyclohexyl carboxyl copolymer, or an alcohol-based polyester. , Such as glycerol (glycerol) copolyester. The composition of the base layer of Mingzhi Synthetic Paper contains between 0% and 40%. The purpose is to make the synthetic paper opaque, and to reduce and lighten it by processing. The lightweight and incompatible materials of the synthetic paper of the present invention are uniformly blended in both directions (longitudinal and horizontal) and appropriately extended, which will cause phase separation to exist between the interfaces of the different materials and be obtained. Different pore structures will have different effects on the weight reduction of synthetic paper and the adsorption of surface treatment agents. A hydrocarbon-based resin with an inorganic powder filler can obtain a uniform pore structure that is more stable than that of synthetic paper. When the base layer is present, it has a good inorganic powder filler contained in the adhesion composition of the ink and the surface treatment agent, and its particle size is suitable. Specific examples of the inorganic powder filler, such as carbon dioxide, kaolin, talc (Talc: tomaceoUs earth) and silica (siHca). Ming's synthetic paper, in addition to the introduction of reactive functional groups to modify its surface polarity, make it and the surface coating machine powder process after processing, binding, and then separate 'good effect due to a low density and opaque Achieve lightness. Combination of 0.1 acid calcium 丨, Shi Xi ester or ink

Page 11 539790 V. Description of the invention (8) ~ ---- In addition to having good adhesion, and with a suitable surface coating layer, the layer is properly designed to bridge the synthetic paper base layer. Second, the obtained synthetic paper has excellent surface strength, such as surface wet strong sound: surface dry strength, etc .; and the coating layer is also introduced with appropriate inorganic powder filling = this final synthetic paper also has excellent printability, Including suitable volume =, nature and ink drying speed. Tian's ink-absorbing surface coating layer includes 15 ~ 40% by weight thermoplastic resin, 45 ~ 70% by weight inorganic powder filler, and 5% by weight @ 环? fat. The coating method of coating the surface coating layer on the base layer of synthetic paper can be adopted.

(blade), air knife, roller, calendar, die, and extrusion coating methods. The purpose of the thermoplastic resin used in the surface coating layer of the present invention is to serve as an adhesive (bind) between the surface coating layer and the base layer of synthetic paper. Resin compatible ', so the synthetic paper treated with this surface coating layer has good surface strength. The thermoplastic resin used in the surface coating layer of the present invention is mainly a polyfluorene: series resin, including modified polyfluorene hydrocarbon resin or a derivative thereof, and specific examples, such as polyethylene, ethylene-vinyl acetate copolymer

(ethylene-vinyl acetate copolymer), chlorinated polypropylene, ethylene-ethyl acrylate copolymers, polyendoline and ethylene-propylene copolymers, etc. The melting point range of the poly warp resin used in the surface coating layer is preferably 100 ° C to 180 ° C. The purpose of adding an inorganic powder filler to the surface coating layer of the present invention,

(Page 12) 39790 V. Description of the invention (9γ ___ ϊ: i: Good ink absorption and drying speed of synthetic paper. Examples of cold soil, talc and talc on the surface, such as carbonic acid, osmium dioxide, kaolin size and at Bathing soil, chopping soil, etc. The type of inorganic powder filling material and kaolin clay compared to Shishan D will affect the printing life of the most synthetic 1's, such as the general method ^ s 2 good ink absorption; general light carbonate (Precipitation & s calcium) heavier calcium carbonate (# lack #, female healing 1 'manufactured by the pulverization method, / no to people: the smaller the particle size of the powder filler, the larger its total surface area will be a pair of paper The more the ink absorption and the ink drying speed are more helpful. The purpose of adding epoxy resin to the surface coating layer of Maoming is ring cover :: f becomes the reactive functional group of the paper base layer to carry out the bridging reaction, thereby improving: The bonding strength between the base layer, the base layer, and the surface coating layer further improves the final surface strength of the base layer. The epoxy resin contained in the surface coating layer of the present invention can reduce lice— /, 2-ring Oxypropane derivative, when the epoxy resin is a 3-chloro-1,2-epoxide derivative, it may be bisphenol A ( Bi sphen〇1 A) epoxy resin series or Alcoholic glycidyl ether epoxy resin series. Specific examples of epoxy resin include: bisphenol A diglycidyl ether

I (diglycidyl ethers of bisphenol A), diglycidyl ethers of polypropylene glycol, or diglycidyi ethers of phenol-formaldehyde Novolac. The composition of the surface coating layer used in the present invention can be divided into two types including a solvent and a solvent-free type. The thermoplastic resin contained in the solvent-containing composition, such as vaporized polypropylene and ethylene-vinyl acetate copolymer. Etc., must be on page 13 539790 V. Description of the invention (10) --- It can be dissolved in a suitable solvent. The composition of this type of solvent-containing surface coating layer is to use a solvent, a thermoplastic resin, an inorganic powder filler, and裒 Oxygenate 'is prepared by grinding with two rollers or a high-speed mixer, and the method of coating it on the base of synthetic paper can be applied by rollers, air knives, and doctor blades. The solvent suitable for the present invention can be toluene and xylene. Wait. Solvent-containing solvent B: Coating 1! Thermoplastic resin contained in the layer composition, for example, graft-like: Dien 7: propylene, ethylene-propylene copolymer, vaporized polypropylene, and ethylene-dioxin, etc. This kind of solvent-free surface coating layer composition is made by blending thermoplastic resin, inorganic powder filler and epoxy resin. • Melt processing methods, such as Wan horsepower machine (banbury double / tired rod extruder) (Extrud⑷, etc., this type of surface coating = finished with calendering (calend ^ appended hereafter & I% ^ t) the scope of the present invention, the scope of the invention should be τ < May patent scope shall prevail. ：： ί :: The composition of each component of the synthetic paper base layer is as shown in Table 1. The percentages indicate the weight percentages. The composition of the components is shown in Table 2. Jitong · Longnongfu is equipped with A four-port reaction bottle with a stirrer inlet acid), 24.1 grams of 5-sulfonic acid steaming tube, thermometer, feeding port, nitrogen gas was added 121.2 grams of adipic acid (aa, adipic sodium formate (SSIPA; sodium 539790 V. Description of the invention (12) ____ The synthetic paper of Asia via horizontal stretching equipment has excellent- Surface == 5 times. The final properties are shown in Table 3. The degree of dryness and ink dryness. The various evaluations are implemented as the constituent materials of your synthetic paper, and then the sheet stretching equipment is used as A single cloth application machine is coated in a solvent, and the treated paper is transversely stretched into a paper having the advantages shown in Table 3. The base layer, and the product (A2) are shown in Table 1. This person is extruded. Put this mouth into a paper base at a temperature of 23 ° F.

..._ _ 0 C, extrude M ^ through the die to obtain unstretched sheet material. ^ The material is raised to 15 (TC through the heating roller, and extended longitudinally through the axis, then 2 ~ 8 times, and get synthetic paper base =) Yan :: Into the place: composition of the broad surface coating layer 速), apply the roller to the high speed synthetic paper base layer (A2), and then collect the solvent through the high temperature system. This surface was coated with paper to form a base layer, and the temperature was controlled by a heating roller at 150t :, and it was stretched to make a uniaxial lateral extension of 5 times, and the resulting surface strength and ink drying properties were different. Evaluations Physical Example 3 The synthetic paper base layer used in this example is the synthetic paper base layer (A1), and the manufacturing method is the same as that described in Example 1. The composition (B2) of the surface coating layer is shown in Table 2. The components of this surface coating layer are mixed through a twin-screw extruder and coated on the synthetic paper base layer (A1) with an extrusion coater.

Page 16 539790 V. Description of the invention (11) salt of su 1 foi sophtha late), 127.2 grams of diethylene glycol (DEG; diethylene glycol), 86.58 grams of 1,4-cyclohexanediol (CHDM; 1,4-cyclohexanediol), and 0.15 g of tetrabuty 1 titanate (TBT) as catalysts. At l 6 5. After about 1.5 hours of starting the esterification reaction at C or higher, the temperature was increased, and the pressure was gradually reduced to bring the polymerization temperature to about 250 ° C. and about 8 to rr. After 1.5 hours of polymerization, the temperature was lowered and the vacuum was broken with & At C, 15.4 grams of trimenitic anhydr ide was added and reacted for 5 hours, and then trimellitic acid copolyester was obtained. The limiting viscosity (丨 v) was about 0.36 dl / g, and the acid value (An) About 42 mg KOH / g. Example 1 After the composite materials are formed into a sheet shape, the surface is coated with the various surface coating layers on the surface of the longitudinal base layer (A1) before the solvent is removed. The composition (A1) of the paper base layer after the agent treatment is as shown in the table. 1 is shown. This synthetic paper base was formed with an extruder at a temperature of 230 ° C. (: Under the conditions of sheet f0rming), and then heated to 150 ° C by a heating roller, it stretches 2 to 8 times in a uniaxial longitudinal direction to the stretching equipment to obtain the composition of the synthetic paper coating layer (B1) As shown in Table 2. The surface coating layer and toluene were triturated to prepare a solid component composition (B 1). A roller coater (r0n # ^ σ) was formed on the paper base layer (A 1). Then, go through a high-temperature oven to remove people: the solvent recovery system collects the solvent. This is passed through the surface coating port and the paper base layer, and the temperature is controlled by a heating roller at 50 t.

Page 15 539790

At 1 5 0 C, and through the lateral extension equipment, «also 丨 π ^ ^ 1 under the early axis branch extends 5 times, and finally the synthetic paper has a surface strength of different k as shown in Table 3. Show. Voids of holes outside each. 5. Description of the invention (13) The synthetic paper roll treated with the surface coating agent is controlled by heating rollers to produce temperature. Example 4 Paper base layer (A 2) The base paper used in this embodiment is The synthetic method is the same as described in Example 2.

The components of the surface coating layer (B2) used in Example 3 were prepared, and the mother's $ = screw extruder mixed chain, and the extruder coating machine was used to coat the above-mentioned synthetic paper base layer (A2). . Then the surface layer of the person j j treated by the surface coating agent is controlled to a temperature of 150 by a heating roller. 〇, and through the horizontal extension η as a uniaxial lateral extension of 5 times, the final synthetic paper produced has excellent surface strength and ink drying properties, the physical properties of its evaluation are shown in Table 3 ΤΓΓ 〇 '

The composition (A 3) of the 30% paper base layer is shown in Table 1. The components of this synthetic paper-based sound are extruded at a temperature of 230 ° C through a sheet forming material (sheet forming), and then heated to j by a heating roller. Synthetic paper (A3) with 2 to 8 times extension and 5 times horizontal extension. "

Page 17 5397% V. Description of the invention (14) " '------- The combination used in this comparative example The manufacturing method is the same as that in comparative example 1. The base layer is a synthetic paper base layer (A3). The surface used in Example 3 is composed of a twin-screw extruder mixed chain, and is composed of various items such as embossing and cloth lining (62). The synthetic paper base layer is extended. (A3) U "is coated on the above-mentioned uniaxial paper-forming base layer, and t 伸 surface coating agent treated with a roller roller pestle is used to make a single-strength device at a temperature of 15 (rc, and the horizontal axis is extended to the early axis h direction). Synthetic paper made by extending 5 times. Example 3 The synthesis method used in this comparative example is the same as that described in Example 2. 4 The base layer is a synthetic paper base layer (A2), and the composition of the top coating layer (B3) is as follows. As shown in Table 2. And this = and, through a twin-screw extruder to mix the chain, and to extrude the coater cloth: cloth agent: m-stretched synthetic paper base layer (Α2). Then this surface coated D into paper The base layer is synthesized by a heating roller to control the temperature at 150 °, and it is synthesized by a horizontal extension device for uniaxial lateral extension of 5 times. From the data in Table 3, it can be seen that the synthetic paper of the present invention has both ink drying and- Compared with the comparative example, the ink absorption and surface strength have better and more physical properties of the drawer 2. For example, compared with the comparative example 1, In the case of surface coating and geographical conditions, although the synthetic paper of this comparative example has very good surface strength, it is extremely poor in ink dryness and ink absorption; the synthetic paper in Comparative Example 2 & There is no reactive functional group in the material, so the final synthetic paper has poor surface strength; in Comparative Example 3, since no reactive group is combined with X in the surface coating layer,

Page 18 539790

The paper base layer is cross-linked, so its surface strength is poor and its ink absorption is not good. In addition, the gloss of this synthetic paper is comparable to that of the comparative example, and the whiteness is better than that of the comparative example. Table 1 Composition of base paper of synthetic paper (° / 〇) A1 A2 A3 Poly dilute 1 45 45 50 Polyethylene 2 15 15 20 Calcium carbonate 3 20 10 20 Talc powder 4 10 10 10 Trimellitic copolyester 5 10 20 0 1. Polypropylene has a melting index of 1.6 g / mm and a melting point of 168 ° C 2. A polyethylene has a melting index of 0.95 g / min and a τ melting point of 130 ° C 3. The particle size of calcium deacid is 1.5 β m 4. Talcum powder is Yusen Chemical 1 Co., Ltd. YT-1000 5 _Manufactured according to the method of Preparative Example 1 539790 V. Description of the invention (16) Surface coating layer composition ^ B1 B2 B3 Tritiated polypropylene 1 30 0 0 Polypropylene 2 0 20 20 Ethylene vinyl acetate copolymer 3 0 10 10 Ring gas resin 4 5 5 0 Calcium carbonate 5 40 65 70 Kaolin 6 15 0 0 Dioxin 7 10 0 0

1 · Argonized polypropylene is Deqian trade official sentence ML-15 2 · Polypropylene has a melting index of 24g / min, melting point is 3. Ethylene S-Ethyl Acetate Copolymer is a Japanese TOYSODA product Nip of lex 63 3 4. Epoxy resin is a product of Changchun Petrochemical Co., Ltd. BE-502 5. The particle size of calcium deacid is 0 · 8 m. 6. Kaolin is Englehard Ulter's product Gloss-90 7. Titanium dioxide is USA DuPont R-900

1_ Turn to page 20 539790 V. Description of the invention (17) Evaluation of soil rabbits ___ 1 Example _ Comparative Example 3 4 1 2 3 Synthetic paper base layer A1 A2 A1 A2 A3 A3 A2 Surface coating body B1 B1 B2 B2 B2 B3 Gloss κ%) 12.3 13.2! 8.7 9.2 22.5 9.2 9.8 Whiteness 2 (%) 90 91 83 84 82 83 83 Ink Glowness 3 (RI tester) Γ 3 0 " Γ30 ”1, 30” 1 ? 3 0 " 6 > 3 CT Γ 3 0 " 1 J ink absorption 4 K & N drop (%) 8.8 8.6 7.8 7.6 3.1 7.6 7.3 surface strength 5 (RI tester) 10 9 10 9 10 8 7 1. Gloss: 2. Whiteness: 伖 JIS Measured in accordance with JIS P8142 P8148 Method 3. Ink dry recordability 'Cut synthetic paper into 5 strips first. • Length of about 30 cm, width of 2-4 cm. • Toyo Ink Mfg. Co., Ltd's TK Newmark V inks • Printed on the RI Tester press • Then take a blank sheet of paper. Rotate every 30 seconds • Walk about 2-3 cm in one time | Whether Kacha red ink is transferred to Blank paper sheet • Calculate the time until no transfer at all "4_ Ink absorption (K & N drop): Drop the red ink (approximately 5-10 g) on the printing surface of synthetic paper • About 2 minutes. Drop the ink again Wipe clean 1 and measure the whiteness before and after the drop of the ink according to JIS-P81 4 8 in terms of whiteness. Natural whiteness, oil y ^ x100% ^ Whiteness of base paper 5_ Surface strength: According to JIS P8129 method ΙΙΗΙΙΙ page 21

Claims (1)

539790 VI. Scope of patent application 'α Its package 1 · A synthetic paper with excellent 1r ^ r ^ nrri, which includes (A) 50 ~ 80% of the total weight of synthetic paper by weight, including: soil (A) 50 ~ 85% by weight polyolefin resin (po; [y 〇! Ef 土 n) resin, (b) 5 ~ 30% by weight polyester with reactive functional groups, ( c) an inorganic powder filler with a weight ratio of 10 to 40% based on the weight of the base layer of the synthetic paper; and (B) a surface coating layer with a weight ratio of 20 to 50% by weight of the synthetic paper, the surface The coating layer is coated on one or both sides of the synthetic paper base layer, and includes (a) a thermoplastic resin with a weight ratio of 15 to 40%, and (b) an inorganic powder filling with a weight ratio of 45 to 70%. (C) 3 ~ 1 5% by weight epoxy resin, based on the weight of the surface coating layer. 2. The synthetic paper according to item 丨 in the scope of the patent application, wherein the polyolefin smoke resin is selected from the group consisting of polyethylene, polypropylene, and ethylene-propylene copolymer. 1/3. The synthetic paper as described in item 2 of the scope of patent application, wherein the polyolefin fire-air resin is grafted polyethylene or grafted polypropylene. / 4. The synthetic paper according to item 2 of the scope of the patent application, wherein the polyolefin-based resin is an ethylene-propylene random copolymer or an ethylene-propylene block copolymer < polymer. —T The synthetic paper as described in item 1 of the scope of the patent application, wherein the reactive functional group is a group consisting of a free selective group, an amine group, an alcohol group, and an epoxy group. Page 22 539790 6. Scope of patent application 6. The synthetic paper described in item 1 of the scope of patent application, wherein the reactive functional group contained in the base layer of the synthetic paper can be combined with the epoxy resin contained in the surface coating layer. The epoxy group in it creates a bridging bond. 7. The synthetic paper according to item 1 of the scope of the patent application, wherein the polyester having a reactive functional group is a copolyester of a selective tribenzyl triacid copolyester, a diethylene triamine, Triethylene tetraamine copolyester, epoxycyclohexylfluorenyl copolyester, and glycerol (g 1 ycer ο 1) copolyester. 8. The synthetic paper according to item 1 of the scope of patent application, wherein the polyester having a reactive functional group is a trimellitic acid copolyester. 9. The synthetic paper according to item 8 of the scope of patent application, wherein the limiting viscosity range of the trimellitic acid copolyester is between 0.1 5 and 0.4, and the acid value ranges between 20 and 60. between. I 0. The synthetic paper according to item 1 of the scope of the patent application, wherein the inorganic powder filler is selected from the group consisting of calcium carbonate, titanium dioxide, kaolin, talc, diatomaceous earth, and silica. II. The synthetic paper according to item 1 of the patent application scope, wherein the thermoplastic resin is a polyolefin resin. 1 2. The synthetic paper according to item 11 of the scope of patent application, wherein the polyolefin resin is selected from polyethylene, ethylene-vinyl acetate copolymer, gasified polypropylene, ethylene-ethyl acrylate copolymer, Propylene and ethylene-propylene copolymers. 1 3. The synthetic paper according to item 1 of the scope of patent application, wherein the epoxy resin is a 3-gas-1,2-epoxypropane derivative. Page 23 539790 VI. Application scope of patent 14. The synthetic paper described in item 13 of the scope of patent application, wherein the 3-chloro-1,2-epoxypropane derivative is bisphenol 4 (8 丨 3? 1 ^ 11〇1 person) epoxy resin series or alcohol type glycidyl ether (A 1 c 〇h ο 1 icg 1 ycidy 1 ether) epoxy resin series. I 1 5. The synthetic paper according to item 1 of the scope of patent application, wherein the surface coating layer further comprises a solvent. 1 6. The synthetic paper as described in item 1 of the scope of patent application, which is produced by mixing the components of the base layer of the synthetic paper, and then unidirectional (longitudinal) or bidirectional (longitudinal, horizontal) extension, and The components of the surface coating layer are coated on the stretched synthetic paper base layer. 1 7. The synthetic paper as described in item 1 of the scope of patent application, the production method of which is: mixing the components of the base layer of the synthetic paper, and then extending in one direction (longitudinal) or two directions (longitudinal and horizontal); The components of the surface coating layer are coated on the stretched synthetic paper base layer; and the synthetic paper coated with the surface coating layer is stretched. 18. The synthetic paper according to item 16 of the scope of patent application, wherein the composition of the surface coating layer is coated on the base layer of the synthetic paper by a coating method such as doctor blade, air knife, roller, calendar, die, or extrusion. on. Page 24