TW201213129A - Reflective material - Google Patents

Abstract

The present invention provides a new reflective material excellent in reflectivity, especially excellent in light-diffusing property. The reflective material provided is characterized in having a resin layer (B) containing 2 or more kinds of thermoplastic resins with different solubility parameters (SP values ) on at least one side of a resin layer (A) having voids inside, wherein the resin layer (B) has an arithmetic average roughness (Sa) for three-dimensional surface roughness of 0.5 μ m or more, which is obtained by the combination of thermoplastic resins with different solubility parameters (SP values).

Description

201213129 SUMMARY OF THE INVENTION [Technical Field] The present invention relates to a reflective material suitable for use as a constituent member of a liquid crystal display, a y ..., a yue yy, and a stencil 4 . - "," [Prior Art] In the field of lighting fixtures or lighting kanbans, such as liquid crystal displays, reflective materials have been used. Recently, the field of liquid crystal displays is evolving toward device size and display performance, at least More light is supplied to the liquid crystal to improve the performance of the backlight unit, and more excellent light reflectivity (also referred to as "reflectivity") is required for the reflective material. For the reflective material, for example, a reflective film for a liquid crystal display using a white polyester film containing an aromatic polyester resin as a main raw material is known (see Patent Document U. However, when the material of the reflective material is an aromatic polyester resin) In the case, the aromatic ring contained in the molecular bond of the resin of the scented scent of the resin absorbs ultraviolet rays, and thus ultraviolet rays are emitted from a light source such as a liquid crystal display device, and the film is deteriorated and yellowed, resulting in light of the reflective film. Further, it is also known that a film formed by adding a filler to a polypropylene resin is stretched to form a fine void in the film to cause a light-scattering reflection material ( Refer to Patent Document 2); and an olefin-based resin light-reflecting body having a laminated structure comprising a base material layer containing an olefin-based resin and a filler, and a layer containing an olefin-based resin (see Patent Document 3). The resin-reflecting film has a characteristic that the film is deteriorated and yellowed due to ultraviolet rays, which is caused by ultraviolet rays. The reflection sheet constituting the resin group of the machine powder is known to have at least one type of a resin containing a polypropylene resin and a resin which is incompatible with the polypropylene resin, and a biaxial extension having a reduced heat shrinkage ratio. The reflection sheet (refer to Patent Document 4). The reflection sheet has a characteristic that the conventional reflection sheet having a large amount of inorganic powder is not contained in a large amount and having the same density as the basis weight and density, and has a higher age. The surface of the reflection sheet is relatively smooth and highly specular, and if it is mounted on a liquid crystal display and the light source is turned on, there is a problem that unevenness in brightness of the screen (so-called "luminance spot") occurs. In order to solve the problem of the brightness of the surface of the surface, there is a proposal to form a reflection sheet having high light diffusibility by applying an organic fine particle or the like on the surface (see Patent Document 5). [Prior Art Document] [Patent Literature] [Patent Document 1] Japanese Patent Laid-Open Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. JP-A-2008-158134, JP-A-2010-085843, SUMMARY OF INVENTION [Problems to be Solved by the Invention] 100125072 5 201213129 As described above, various reflective materials have been proposed so far, but It is possible to obtain a high-intensity backlight, and still desire to further improve the reflective material. Further, as a reflection material using an olefin resin, as described above, there is less problem of deterioration and yellowing of the film due to ultraviolet rays, and the usefulness is higher. However, since heat resistance is not used; I, because (4) is used as a liquid crystal (four) which is required to be a component, there is a problem that the film shrinks and wrinkles due to heat. In liquid crystal displays, lighting fixtures, lighting In the field of kanban and the like, in recent years, a light source such as an LED that is accompanied by high-temperature heat has been used, so that further heat resistance is required for the reflective material. On the other hand, a reflecting material subjected to bending processing or the like is incorporated in a liquid crystal display device, and such bending workability (hereinafter referred to as "bending resistance") is required for the reflecting material. The purpose of the present invention is to provide a novel reflection which is excellent in reflectivity, particularly excellent in light diffusibility, and which is excellent in heat resistance and bending resistance, and which does not wrinkle even in a high temperature environment. material. (Means for Solving the Problem) The present invention is now produced by a resin layer (4) containing a fine powder filler to a single resin, and a glass transition temperature (10) (10) The J-layer structure of the resin layer has excellent reflectivity, and the t-heat and the financial bending property are both novel reflective materials that do not shrink even in a high-temperature environment, and are incompatible with the tree. The inventors of the present invention further studied the resin layer (B) containing 100125072 6 201213129 grease, and found the following, and completed the present invention. '(1) It was found that the above-mentioned resin layer (9) blended with two kinds of resins has a three-dimensional table. • Arithmetic mean coarseness (%) of surface roughness _ _ above characteristic table ^. State, the effect of high light diffusivity can be achieved. (7) Furthermore, the reason why the surface state is such a surface state is mixed The solubility parameter (sp value) of the two types of resins is entangled. In other words, the present invention proposes a reflective material which is characterized in that at least one side of the resin layer (4) having a void therein has a solubility parameter (sp value). More than 2 types of thermoplastic The resin resin (8); and the resin layer (9) is a combination of thermoplastic resins having different solubility parameters (SP values), and the arithmetic mean roughness (Sa;) of the ternary surface roughness is 〇5/mi or more. Advantageous Effects of the Invention The reflective material of the present invention has a resin layer (B) containing at least two types of thermoplastic resins having different solubility parameters (sp values), at least one side of the resin layer (A) having voids therein. Further, the resin layer (B) is a combination of thermoplastic resins having different solubility parameters (SP values), and the arithmetic mean roughness (Sa) of the three-dimensional surface roughness is 〇.5/xm or more, and thus has excellent light. In the case of the resin used in the resin layer (B), an amorphous resin having a glass transition temperature (JISK7121) of 85 to 150 ° C is used. Therefore, the bending resistance and the heat resistance can be ensured, and wrinkles do not occur even in a high temperature environment. Therefore, the reflective material of the invention of 100125072 ^ 201213129 can be applied to the reverse of a liquid crystal display, a lighting fixture, or a lighting board. Material. [Embodiment] The following 'for showing an embodiment of the present invention, the reflective member (called the "reflection sheet") will be described. However, the present invention is not limited to the present reflective material. &lt;The present reflective material&gt; The present reflective material is characterized by a laminated structure including a resin layer (at least one side of a resin layer having a void therein), and the resin layer (Β) contains : Thermoplastic resin (〇, and its incompatible thermoplastic tree 曰(II)' and the arithmetic mean roughness (Sa) of the three-dimensional surface roughness of the resin layer (Β) is 〇.5μιη or more <Resin layer (Α)&gt; The resin layer (Α) is a layer having a void inside, and is a layer which imparts reflection to the present reflecting material and which is good for the fuel material. (Void ratio of resin layer (A)) The resin layer (A) is a layer having voids therein, and the void ratio (that is, the void ratio of the layer) is preferably from 10 to 90% from the viewpoint of ensuring reflectivity. By providing the voids in such a range, the whitening of the reflecting material can be sufficiently performed, so that high reflectivity is achieved, and the mechanical strength of the reflecting material is not lowered, and the film is broken. From this point of view, the resin layer The void ratio of (A) is in the above range, particularly preferably 20% or more or 80% or less, preferably 25% or more or 75% to 100125072 8 201213129, and particularly preferably 30% or more or 70% or less. A method of forming a void in the resin layer (A), for example, chemical reaction The foaming method, the physical foaming method, the supercritical foaming method, the stretching method, the extraction method, etc. Among these, the present reflecting material is preferably from the viewpoints of film forming property, continuous productivity, and stable productivity. Specific examples of the stretching method include, for example, a roll stretching method, a rolling method, a tenter stretching method, etc. Among these, for the present invention, because of the roll stretching method and/or the tenter stretching method The extension condition has a wide selection range, and thus it is preferable to adopt such a method of using it alone or in combination and extending in at least one direction. The extension may be, for example, a sheet extending in the machine direction (MD) by a roll stretching method or the like. A shaft extension method, a uniaxial extension in the longitudinal direction, followed by a sequential biaxial stretching method extending in a lateral direction (TD) by a tenter stretching method, or a simultaneous biaxial stretching extending in the longitudinal direction and the lateral direction using a tenter stretching method In addition, from The resin (matrix resin) constituting the main component of the resin layer (A) may, for example, be a hydrocarbon resin, a polyester resin, an acrylic resin, or the like. Polyvinyl chloride resin, polyvinylidene chloride resin, fluorine resin, polyether resin, polyamine resin, polyamine phthalate resin, diene resin, etc. The olefin-based resin is preferably a polypropylene resin such as polypropylene or a propylene-ethylene copolymer, or a polyethylene such as polyethylene, high-density polyethylene or low-density polyethylene. 201213129 Cyclomethicone, such as cyclomethine copolymer, is selected from olefin-based elastomers such as ethylene/propylene rubber (epr) and (epdM) to small olefinic copolymers. , job machine record #, green material ^ gather Chi tree month: and two Γ Ε ' ' ' 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 相 相 相 相 熔点 熔点 熔点 熔点 熔点 熔点 熔点 熔点 熔点 熔点 熔点 熔点 熔点 熔点 熔点 熔点 熔点 熔点 熔点 熔点 熔点 熔点 熔点 熔点. The viewpoint is preferable. Further, from the viewpoint of extrusion moldability, among the polyemene resin (four), it is special (10). C, 21. Service) is a polypropylene resin (pp) of G丨~2Q, especially good (four), &quot; In addition, the matrix resin contained in the resin layer (4) is preferably 30% by mass or more, more preferably 40% by mass or more, and particularly preferably 5% by mass or more based on the total mass of the resin layer (8) (including 1 〇〇). 〇/〇). (Micro-powder filler) ^Lipid layer (A) is able to obtain excellent anti-hybrid, difficult to contain micro-powder filler ° by containing micro-recording filling #1 ', except for matrix hard and micro-powder filling In addition to the refraction and scattering caused by the difference in refractive index between the agents, it is also possible to obtain: from the refraction scattering caused by the difference in refractive index between the voids formed around the micronized filler, and in the fine powder. Reflectivity is obtained by refraction scattering or the like caused by the difference between the void formed around the filler and the fine powder filling. The fine powder filler may, for example, be an inorganic fine powder or an organic fine powder 100125072 201213129 or the like. : calcium carbonate, magnesium carbonate, barium carbonate, sulfur

Examples of the inorganic fine powder system include magnesium carbonate, barium sulfate, calcium sulfate, zinc oxide, zinc oxide, aluminum oxide, aluminum hydroxide, and M.

7 «People only work in size' ^竑哥一尔3 will use more than j kinds. Among these, consider using 椹忐 &amp;, magnesia, calcium oxide, titanium oxide, oxyapatite, glass powder, asbestos powder, seed, or mixed use. The refractive index between the resins is preferably a larger refractive index, and particularly preferably calcium carbonate, barium sulfate, titanium oxide or zinc oxide having a refractive index of 16 or more. Compared with other money fillings, the ancient recursor's titanium oxide has a refractive index that is significantly higher than that of the base resin, so that it can be made larger than that of other fillers. The blending amount gives excellent reflectivity. 1' can achieve high reflectivity by the thickness of the titanium oxide, even if the thickness of the (four) reflective material. Therefore, it is more preferable to use a filler containing at least titanium oxide. In this case, the amount of the titanium oxide is preferably 30% or more of the total mass of the inorganic filler, or when the α is used as an organic filler and an inorganic filler. In the case, it is preferably 30 ° / of its total mass. the above. In addition, in order to improve the dispersibility of the inorganic fine powder to the resin, it is also possible to use a surface filled with a fine powder to form a surface, and to use (4) a compound, a polyol compound, an amine compound, a fatty acid, a fat (4) g, and the like. Processor. On the other hand, the organic fine powder system may be, for example, a polymer bead or a polymer 100125072 201213129 hollow particle or the like. These may be used alone or in combination of two or more. Further, an inorganic fine powder and an organic fine powder may be used in combination. The micro-Qin-like filler preferably has a particle diameter of 0.05/mi or more and 15/mi or less, more preferably a granule L 〇. If the particle size of the filler reaches 0.05#m or more, the dispersibility of the matrix resin is not lowered, so that the sentence g can be obtained. Further, when the particle diameter is not more than m, the interface between the matrix resin and the micro-preferable filler can be densely formed, and a highly reflective reflective material can be obtained. In addition, the content of the fine powder filler is preferably 10:80,000 in terms of the reflectivity, mechanical strength, productivity, etc. of the reflective material with respect to the mass of the entire resin layer (A). More preferably, it is 2Q~% f%. If the fine powder filler contains more than 5% of the Ridori, the boundary between the matrix resin and the fine powder filler can be sufficiently ensured. If the content of the fine powder filler is 7 〇 mass%, the mechanical strength is required. ^ From the bottom 'ensure that the resin layer (8) of the reflective material, the ratio of the matrix resin to the micro-powder filler, the grease: micro-powder filler, 2G ~ 3G point 'is better set to the matrix tree Good 80: 20~60: 40. (Other Components) The resin layer (4) may contain other resins than the above. Further, it may contain an antioxidant, a finalizing agent, a heat stabilizer, a dispersing agent, a UV absorber, a glare brightener, a compatibilizer, a slip agent, and other additives. 100125072 12 201213129 (Form of the resin layer (A)) The resin layer (4) may be a layer composed of a sheet, or may be formed by forming a film (not forming a sheet) by extrusion or coating of the molten resin composition. Layer. In the case of a sheet, the sheet system may be an unstretched film or a single (four) biaxially stretched film, preferably an extended film obtained by extending at least u times in a uniaxial direction. film. &lt;Resin layer (B)&gt; The resin layer (9) is a layer which is difficult to be thermoplastic and has a thermoplastic resin (II) which is incompatible with it. The resin layer (8) may be a thermoplastic resin (1) containing the above-mentioned thermoplastic resin (1), and a non-cohesive thermoplastic resin (π), and the surface roughness of the three-dimensional surface may be The premise τ of the average secretness (Sa) of the different artisan, the above-mentioned plastic axis (1), and the heat-recordable tree incompatibility with it, are not limited by _ and can be used. (Surface roughness) The surface of the resin layer (8) is mainly focused on the three-dimensional surface teaching wheel with a coarse rotation (10) of more than 0·_. From the viewpoint of eliminating the drawing _ arithmetic mean coarse _Sa), it is preferably 0.5 or more and 7 〇 and then Ι. Ο/im or more and 3. 〇μπι or less. The method for forming such a resin layer may be, for example, a solubility parameter (hereinafter referred to as "sp value") of two kinds of resins of 100125072 125072 _ 201213129, and more specifically, The absolute value difference of the SP value of the mixed resin is (Cal/cm), and more preferably 0.5 to 1.5 (cal/cm3) of 0·5. By the week t being such a range, the dispersibility of the two types of tree-shaped is appropriately adjusted, and the arithmetic mean coarse sugar content (four) s of the surface roughness of the secondary element of the correction layer (B) is in the above-mentioned range. Can exhibit high light diffusivity. If the SP value of the mixed resin, the value difference is 〇 5 (calW). 5 or more, in the resin layer (B), 2: a dispersed phase of a thermoplastic resin (Π) can be formed, and the surface of the resin layer (8) can be made thick, and high light diffusibility can be obtained, which is preferable. On the other hand, if the absolute value of the SP value of the mixed resin is 3. 〇 (calW'5 or less, the dispersed phase of the incompatible thermoplastic resin (Π) in the resin layer (8) can be stably formed and the resin layer (B) The system is also stable, so the car is good. In addition, the absolute difference of the '^ sp value is too large, it will cause the phase to leave 'there will be, for example, hot resin (the molten resin composition: from it) The shape causes the possibility of occurrence of an attachment around the spinneret of the τ-type die. (3) The scale value is preferably 5 or more or more specifically - its 117 a thermoplastic resin (1) sp 5.0~15. (cai/cm3) 〇, 5, which is better (four) / coffee 3) 12.0 (cal / Cm3) o. 5 or less. The thermoplastic resin (II) has an SP value of 5.3 to 14.7 (cai/cm3) o'5 and a towel of 7 (10) 3). 11.7 (cal/cm3) °·5 or less. In the above-mentioned technical idea, the thermoplastic resin (1) having the sp value in the above range is selected as the candidate resin 1, and the thermal compatibility of the non-phase-dissolving thermoplastic resin (1) having the SP value in the above range is further exemplified. The resin (11) is selected as the candidate tree 曰2, and the arithmetic mean roughness (Sa) of the ternary surface roughness is selected from the resin layer formed by the combination of the remote candidate resins 1 and 2. When it is 5 or more, the resin layer (B) can be formed. In addition, the SP value is obtained by substituting the evaporation energy (Aei) and the molar volume (Δvi) of the atoms and radicals constituting the thermoplastic resin (I) or the incompatible thermoplastic resin (II) into the following Fedors formula. Seek. The sp value is known as 1/. 1113)°.5=mouth^^)0.5 where 'Aei and Δνί use the constants proposed by Fedors (refer to Table i). Table 1 is an excerpt from the evaporation energy and molar volume of the atoms and radicals proposed by Fedors. [Table 1] Atom/Base--- Aei (cal/m〇n Δνί (cm3/mol) -^H&lt; 820 -1.0 -ch2. 1 1 Q〇16.1 -- XS ·,Τ Τ'--- 1,125 33.5 - Ring - 250 16 Base 7,630 71.4 In the 'resin layer (B), the thermoplastic resin (1), and the non-compatible with it, the plastic resin (H), respectively, may be a single resin, or For example, it may contain: one type of thermoplastic resin (1_1), and two kinds of thermoplastic resins (ΙΜ) and (π_2) which are incompatible with each other. In addition, it contains 100125072 15 201213129 ' ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, (II-2) A combination of two or more types. However, from the viewpoint of the effect that the arithmetic mean (four) degree (sa) of the surface of the resin layer (8) is 0.5/mi or more, the thermoplastic resin (1) and the non-phase are different therefrom. The dissolved thermoplastic resin (11), in other words, the amount of the resin contained in the combination of the absolute value of the sp value of 0·3 3.0 (cal/cm) is preferably the total amount of the constituent resin layer (8). 70 f% or more of the fat, more preferably 8% by mass or more, more preferably 90% by mass or more. Further, the thermoplastic resin (I), and the thermoplastic resin which is incompatible with it (II) From the viewpoint of the effect of forming a dispersed phase from the stability and roughening the surface of the resin layer (B), it is preferably 6〇: 4〇~9〇: 1〇, or 4〇: 60~ 10: 90, of which 70: 30~80 is preferred: 2〇, or 3〇: 7〇~2〇: 80 ° However, because of the thermoplastic resin (1) and the thermoplastic resin (π), which one will become The mother phase or the dispersed phase differs, and the effect of roughening the surface of the resin layer is the same. (Additional property imparting) By using an amorphous resin having a glass transition temperature (JISK7121, Tg) of 85 to 150 ° C as one of the resins constituting the resin layer (B), a kind of a matrix resin is preferable. The thermoplastic resin (1) or (II) can also impart heat resistance to the present reflective material. 100125072 16 201213129 = The resin of the outer resin layer (8) refers to a resin which is preferably 20% by mass or more, more preferably 3 Å by mass or more, based on the stalk of the sap (8). As mentioned above, the term "amorphous resin" as used herein means that no exothermic peak derived from crystallization is observed or, even if observed, the crystal melting heat is extremely low below _. Resin. The amorphous resin is stable in the temperature below the glass transition point, and the temperature is small, the core is small, and the dimensional stability is excellent. Therefore, the amorphous resin can be highly reflective. Heat resistance. Therefore, as long as the glass transition temperature (10) of the thermoplastic resin (1) is such as a liquid crystal display device, the resin is sufficient, and therefore, the matrix resin is preferably sufficient. From this point of view, the glass transition temperature (Tg) of the matrix resin of the resin layer (B) is more preferably 9 Gt or more and _ or less, more preferably 150 ° C or less. Examples of such an amorphous resin include a ring-type flue-cured resin, a polystyrene, a polycarbide, a C-based resin, an amorphous poly-lipid, a poly-cageimide, and a thermoplastic H-based material. The t-t is considered to be a ring-like resin, a polystyrene, or a poly-carbonate by considering the extensibility and the transparency of the surface transition temperature range. Among them, ___ is particularly preferable. Here, the cycloolefin resin of the tree layer (B) may be any of a cycloolefin homopolymer, 100125072 17 201213129 cycloolefin copolymer. , Bu Jikou month% thin 1 series resin" main chain is composed of carbon-carbon bond structure, the main chain to two:. The boring tool has a polymer compound having a structure of a hydrocarbon. The cyclic hydrocarbon structure is characterized in that at least a hydrocarbon bis-compound (cycloaliphatic hydrocarbon) is contained as a monomer in a cyclic hydrocarbon structure represented by a finely divided or tetracyclododecene. &quot;% olefinic resin can be classified as: addition of cyclamate (8) polymer or its hydride's addition copolymer with hydrocarbon or its hydride, ring % K, (co)polymerization The body or its hydride can be used in the present reflective material. Specific examples of the cycloolefin-based resin include, for example, cyclopentene, cyclohexene, and octene octene; cyclopentadiene, 1,3-cyclohexanedicyclic monocyclic cycloolefin; bicyclo [(1)] g -2_ene (commonly known as: norbornene), 5_mercaptobicyclo[2.2.1]hept-2-ene, 5,5-dimercapto-double soil [2.2.1]heptane-2·ene, 5 -ethyl-bicyclo[2.2.1]hept-2-ene, 5-butyl-double soil [2.2.1]hept-2-ene, 5-ethylene-bicyclo[2 21]hept-2-ene , 5-hexyl-double soil [2.2.1] hept-2-ene, 5-octyl-bicyclo[2.2.1]hept-2-ene, 5-octadecyl-bicyclo[2.2.1]heptane- 2-ene, 5-indenyl-bicyclo[2.2.1]hept-2-ene, 5-vinyl-bicyclo[2.2.1]hept-2-ene, 5-propenyl-bicyclo[2.2.1] a bicyclic cycloolefin such as hept-2-ene; tricyclo[4.3.0.12,5]indole-3,7-diene (commonly known as dicyclopentadiene), tricyclo[4.3.0.12,5]癸-3 - alkene; tricyclo[4.4.0.12,5]undeccarbon-3,7-diene or tricyclo[4.4.0.12,5]undec-3,8-diene, or partial hydrogenation a tricyclic ring of an object (or an adduct of cyclopentadiene and cyclohexene) [4.4.〇.12,5]undec-3-100125072 18 201213129 olefin; 5-cyclopentyl-bicyclo[2.2.1 Hept-2-ene, 5-cyclohexylbicyclo[2.21]hept_2 a tricyclic cycloalkene such as a olefin, a 5-cyclohexenylbicyclo[2.2.1]hept-2-ene or a 5-phenyl-bicyclo[2 21]heptanene; a tetracyclic ring [4.4.0.12, 5.17,10]Dodecaine·3_ene (also referred to as “tetracyclododecene”), 8-methyltetracyclo[4.4.0.12, 5.17,10] twelve carbon_3_lean, 8_B Tetracyclic [4.4.0.12, 5.17, 10] dodec-3-ene, 8-adenine tetracyclo[4.4.0.12, 5.17,10]dodecyl_3_ene, 8_ethylenetetracyclo[ 4.4.0.12, 5.17, 10] dodec-3-ene, 8-vinyltetracyclo[4,4.0.12,5.17,10]dodec-3-ene,8·propenyltetracyclo[4.4.0.12 , 5.17, 10] 12-carbon _3_ thin four-ring ring rare furnace. 8-cyclopentyl-tetracyclic [4.4.0.12, 5.17, 10] twelve carbon _3_ thin, 8-cyclohexyl _ tetracyclo[4·4.0.12, 5.17,10]dodecy-3-ene, 8-cyclohexenyl·tetracyclo[4.4.0.12,5.17,10]dodec-3-ene, 8_ Phenyl-cyclopentyl-tetracyclo[4.4.0.12, 5.17,10]dodec-3-ene; tetracyclo[7.4.13,6.〇1,9.〇2,7]tetradec-4 , 9,11,13-tetraene (also known as "Μ_亚曱基'仏, ~tetrahydro"), tetracyclic [8.4.14,7.01,10.03,8]15 carbon-5,10,12 , 14_tetraene (also known as "1,4_ arylene-l, 4, 4a,5,10,l〇a-hexahydropurine"); five $ [6.6.1·13,6.02,7·09,14]_4-ten [6.5.1.13,6.02,7.09,13]-4- Ten [7.4.0.02,7.13,6·110,13]-4-ten [8.7.0.12,9.14,7.111,17.03,8.012 [8.7.0.12,9.03,8.14,7.012,17.113 carbene, pentacyclopentene , five-ring, five-carbon thin; seven-ring 16]-5-廿 carbon thin, seven-ring 100125072 19 201213129 tetramer and other polycyclic cycloolefins, etc. These ring-thin flue gases can be used alone or in combination with cyclic olefins Two or more kinds of U are copolymerized. Specific examples of the olefins include, for example, .7 @ propylene, I-butadiene, "pentane, hexene, 3, ethylene, pentene, 3-ethyl-1-pentene, butene , 3-methyl-; u dimethyl - 4: _: yl - ^ - hexaplode, octane, hexacarbene, 1-octadecene-nene, "tetradecene, 1_10 W, Ethylene, etc., such as carbon number, 2 to 2G, preferably carbon number, etc., such as hydrocarbons, more than planting, cyclopentene or cycloaliphatic hydrocarbons. Known party of the material = the resin of the polymer or higher, the temperature is shifted from the viewpoint of heat resistance, and it is particularly preferably 85 Å or more and 15 (cyclohexane resin of rc or less). The glass transition temperature (Tg) of the mixed resin is adjusted to be in the above range by mixing and mixing the above-mentioned % smog resin. The commercially available product can be used as the cycloaliphatic resin. For example, Japan River (10) "ZE0N0R (registered trademark)" (chemical name, olefin of cyclic olefin (four) hydride), and "Apel" (registered trademark K and four-cyclododecaene) by Mitsui Chemicals Co., Ltd. Copolymer), or polyplastic company "TOPAS (registered trademark)" (Ethylene Hydroxide and Coordinating Addition Copolymer), etc. 100125072 201213129 "When using ZEONOR (registered trademark)" (chemical name 'cyclic olefin" manufactured by 曰本ΖΕΟΝ The occluded polymer of the open-loop polymer, and/or the "TOPAS (registered trademark)" (additional copolymer of ethylene and rice-lowering) of Polyplastics Co., Ltd., can be obtained from reflective materials with high reflection properties. Further, when the cycloolefin is a copolymer of an olefin and a olefin, the content of the decene is preferably 60 to 9 Å by weight, particularly preferably 65 to 8% by weight or less. The amorphous resin (in the case of an amorphous resin containing two or more components, the total amount thereof) is preferably at least % by mass or more based on the total mass of the resin layer (B). 70% by mass or more, particularly preferably 9 () f% or more (excluding 100%). As described above, when the matrix resin of the resin layer (8) [for example, the thermoplastic resin (1)] is used, the glass shift temperature is 85 to 15 generations_ Xiao, if it is added to improve the resistance of the material, other tree pastes such as heat and hard resin are preferred. The resin layer (8) can be formed by, for example, dispersing a resin layer (8) by mixing an olefin resin and/or a thermo-recordable elastomer other than the cycloaliphatic resin in a cycloolefin (tetra) resin, thereby ensuring a separate ring. The heat resistance which cannot be obtained by the olefin (4) and the heat resistance which cannot be obtained by the monohydrocarbon resin. At this time, the olefin resin other than the cycloolefin resin and/or the melt flow material of the plastic elastomer (called " Legs"), more than (four), or less than 2 inches (dish, boots, load 2U8N), especially better w 100125072 21 201213129 or more, or less than 1 。. Further, the MFR of the 'ring-smoke-type resin is preferably adjusted to the above range. If the MFR is adjusted according to this, the olefin resin and/or the heat-resistant hard body other than the ring_pure fat will be cut by the __ grease towel, and there will be no extreme mechanical properties for the reverse (four). In particular, it is a problem of deterioration, and it is particularly preferable that the vinylene sulfonate other than the cycloolefin resin may be a polyethylene such as a poly-olefin or a propylene-ethylene copolymer, or a polyethylene having a low-density polyethylene. : Lake 曰 4 Ethylene, high density: acetal resin, etc., can be used 兮笙-type, or a combination of more than two kinds of * H Hai special, polypropylene resin (four), from the bright point is better to gather Vinyl resin (IV) Excellent, mechanical properties such as elastic modulus, ethylene resin (IV) and heat resistant 'ene resin (PP). The viewpoint of Minnan's which is especially good for gathering, from extrusion molding (4) (9) Jiajun MFR (23 (TC 21.18ν) α Λ 丙烯 acrylic resin (rushing), compared with, ·, U.1~2〇, Teweijia is 0.5~5 polypropylene resin (rushing). Maji.2~10, among which Yiyang 々ιΑ) (δ) is dense with the resin layer (Α). . For example, the olefinic elastomer, the urethane olefin elastomer, the 曰 辉 辉 * 性 、 、 、 印 印 热 热 热 热 热 热 热 热 热 热 热 热 热One type or a combination of A ® lanthanum elastomers or the like can be used in one or more kinds. Drawing 2,072 ', 'Because the stupid B 22 201213129 olefinic elastomer is compatible with the olefin resin and the special polypropylene resin, so from the viewpoint of improving the adhesion between the resin layer (A) and the resin layer (B) Preferably. The styrene-based elastic system may, for example, be a copolymer of styrene and a conjugated diene such as butadiene or isoprene, and/or a hydrogenated product thereof. The styrene-based elastomer has styrene as a hard segment, and the conjugated diene is regarded as a block copolymer of a soft segment, and since a sulfur addition step is not required, it is preferred. Further, the heat stability of the hydrogenated person is preferably higher. Preferred examples of the styrene-based elastomer include styrene-butadiene-styrene block copolymer, styrene-isoprene-styrene block copolymer, and styrene-ethylene-butene. a styrene block copolymer, a styrene-ethylene-propylene-styrene block copolymer. Among them, a styrene-ethylene-butylene-styrene block copolymer and a styrene-ethylene-propylene-styrene block copolymer which are hydrogenated to eliminate a double bond of a common diene component are preferably used (also referred to as " Hydrogenated styrene elastomer"). (Micronized filler) The resin layer (B) may be added before the arithmetic mean roughness (Sa) of the ternary surface roughness is 0.5/rni or more, and may also contain a fine powder filler. The type, particle diameter and surface treatment method of the fine powder filler are the same as those described in the resin layer (A), and preferred examples are also the same. (Other components) The resin layer (B) may also contain an antioxidant, a light stabilizer, a heat stabilizer, and a purple 100125072 23 201213129 external absorbent, a fluorescent whitening agent, a slip agent, and other additives. In addition, if a compatibilizer, a dispersant, a diffusion bead, etc. are blended, it is difficult to adjust the arithmetic mean rough degree (4) of the three-dimensional surface rough seam to a desired range, and thus basically in the resin layer (B) Do not mix these, but if it is a small amount, it can be blended. (Form of the resin layer (B)) The resin layer (8) may be a layer composed of a sheet, and may be a layer formed by applying a thin resin (not forming a sheet) to the molten resin composition. . In the case of a sheet, the sheet system may be an unstretched film, or may be a uniaxial or biaxially stretched film, preferably an extended film obtained by extending at least one direction in a uniaxial direction, preferably a double shaft. Extend the film. &lt;Laminar structure&gt; The present F-object is required to have a laminated structure in which a resin layer (8) and a resin layer (9) are provided. The hunting structure is such a structure that the resin layer (4) can be provided with reflectivity, and (4) the bending resistance and the like are enhanced, and the resin layer can be highly diffused. The present reflective material can be multiplied by the interaction of the resin layers (4) and (8) to achieve excellent reflectivity. Further, by selecting the resin of the resin layer (8), it is possible to impart heat resistance, and it is possible to impart heat resistance and workability while exhibiting higher reflectivity. Therefore, in such a laminated structure, the resin layer (8) is preferably located on the outermost side of the side on which the light is irradiated (on the side of the reflective use surface). By adopting such a configuration, it is possible to impart high reflectivity to the reflective material at 100125072 24 201213129. In addition, as another laminated structure, for example, a three-layer laminated structure in which a resin layer (B) is provided on both sides of the resin layer (A) can be mentioned. Further, in addition to the resin layer (A) and the resin layer (B), another layer may be provided, and another layer may be interposed between the resin layer (A) and the resin layer (B). For example, an adhesive layer may be interposed between the resin layer (A) and the resin layer (B). &lt;Thickness&gt; The thickness of the present reflective material is not particularly limited, but is preferably, for example, 30 μm to 1500/xm, and particularly preferably 50 μm to l〇〇〇jum in consideration of the handleability of the practical surface. For example, when it is used as a reflecting material for a liquid crystal display, the thickness is preferably 50 μm to 700 μm, and the thickness is preferably ΙΟΟμηι to l〇〇〇pm when used as a reflecting material for lighting fixtures and lighting panels. It can also be seen from the results of the examples described later that even if the resin layer is thin, the heat resistance of the entire reflective material can be improved. On the other hand, if the resin layer is too thick, it causes a financial bending. Reduced sex. . From this point of view, the resin layer (eight) and

&lt;Average reflectance&gt; The present reflective material is an average reflectance of at least one side,

Can be set to the wavelength of the reflective material 100125072 25 201213129 can be good (four) reflection miscellaneous, the material is expected to achieve sufficient brightness of the picture. Daily display, etc. &lt;void ratio&gt; The present reflective material is in the resin layer (A) layer for improving the reflectivity, and the void ratio of the resin layer (A) is used to form the resin by using the void ratio of the positive void. The film of the layer (4) is a target, and when the void is formed, the void ratio (%) = {(film density before stretching _ ^ is obtained by the following formula: film density before stretching} &gt;&lt; 100 I film density) / Extension &lt;Fold-resistant strength&gt; The above-mentioned reflective material can achieve the folding strength according to the following test method. The test method at this time is to use the ΜΙΤ 曲 曲 疲 疲 狡 狡 狡 试验 test machine The sample which grows l〇cm and the width l〇mm is applied with 9 # heavy, and the reciprocating bending speed is 175 rpm and the vibration angle is about 135. Under the conditions, the number of bends until the break was measured. &lt;Manufacturing Method&gt; The method for producing the present reflective material is not particularly limited, and a known method can be employed. Hereinafter, a method of manufacturing a reflective material having a laminated structure will be described as an example, but it is not limited to the following manufacturing method. First, a resin composition A which is blended into a fine powder filler or other additives as necessary in a rare-fee resin or the like is prepared. Specifically, a fine powder filler or the like is added to the rare-component resin of the main component, and the mixture is mixed by a belt-shaped 100125072 26 201213129 blender, a drum, a Henschel mixer, or the like. Use a class (4) mixer (Bunburymixer), uniaxial or double == machine, etc. at a temperature of 12 or more points of the resin (for example, 19 (rc~27〇D), the resin composition A can be obtained. By adding a certain amount of the flue-curable resin, the fine powder filler, or the like to each of the feeders or the like, the resin composition A can be smeared. Further, the micronized filler and other additives are blended in advance. In the olefin-based resin, a so-called masterbatch is prepared, and the masterbatch is: = the resin is allowed to be private, and the resin composition AI in which the desired ruthenium is formed. Change =: and / or thermal TM, other additives,: / or thermoplastic + add ene «tree wax and drum, Henshe two = r: using ribbon blender, uniaxial or biaxial extrusion Machine, etc.; then, use the Banbury mixer, fine. C ~ war) to carry out 1 in the tree wax dazzle The above temperature (for example, a hydrocarbon-based resin, 埽&quot; tree can be obtained as a resin composition. Alternatively, a predetermined or a thermoplastic elastomer can be added from a feeder or the like to each of the first hydrocarbons _ and / Or two r to obtain the resin composition (4). In addition, the pre-equal concentration of the blended human"; Μ other antioxidant-based resin, olefin-based resin: Branch 'the masterbatch, and the formation of cycloolefins __ one ^ The plastic elastomer may be mixed, or J00125072 27 201213129. Next, the resin compositions A and b obtained as follows are dried, and then supplied to other extruders, respectively, to be heated to a predetermined temperature or higher, and melted. Conditions such as temperature 'need to be considered in consideration of factors such as molecular weight decrease due to decomposition', for example, the extrusion temperature of the preferred resin composition A is 190 C to 270 ° C. The extrusion temperature of the resin composition b is 220 ° C. 28 (TC) Then, the molten resin composition A and the resin composition B are combined in two types of three-layer T-die, and are extruded from the slit-shaped discharge port of the τ-type die in a layered form, and are cooled. The roll is bonded to form a cast sheet. Preferably, the cast sheet is extended at least in a uniaxial direction. By stretching, the interface between the olefin resin and the fine powder filler in the resin layer (A) is peeled off to form a void, and the sheet is whitened. The light reflection property of the film can be improved. Further, the cast piece is preferably extended in the biaxial direction. Only the uniaxial stretching is performed, and the formed void can only be a fibrous form extending in one direction, but by performing a double axis When the gap is extended, the gap is formed in a direction perpendicular to the longitudinal direction and the transverse direction to form a disk-shaped form. That is, the peeling area of the interface between the hydrocarbon resin and the fine powder filler in the resin layer (8) by biaxial stretching is performed. It will increase, and the whitening of the sheet will be further improved, and as a result, the light reflectivity of the film can be further improved. Further, when biaxial stretching is performed, the anisotropy in the film shrinkage direction is reduced, so that the film can be improved in heat resistance and the mechanical strength of the film can be increased. The elongation temperature at the time of extending the cast piece is preferably a temperature at which the glass transition temperature (Tg) of the amorphous tree of the resin layer (8) is 100125072 28 201213129, and (Tg+5or, the temperature within the range of the shirt. The temperature reaches the glass-shift temperature (the gamma is applied, and the material can be stably carried out without breaking the film. X, if the temperature is below the temperature (Tg+50°C), the elongation will increase, the result As a result, the void ratio becomes large, so that it is easier to obtain a highly reflective film. The extension sequence of the biaxial stretching is limited by the (4) system, for example, the simultaneous biaxial stretching and the person-by-human extension are possible. The stretching device can be used to perform the melt filming and use. After the roller extension is extended in the pulling direction (MD) of the film, the stretching is performed in the orthogonal direction (TD) of the MD by the tenter stretching, and the biaxial stretching may be performed by the extension of the roller or the like. The stretching ratio when performing the biaxial stretching is performed. Preferably, the extension of the area magnification is 6 times or more. By performing the extension of the area magnification of 6 times or more, the reflective film composed of the resin layer (A) and the resin layer (B) can be realized as a whole. Void ratio 40% or more. After the extension, in order to impart dimensional stability to the reflective film (the shape stability of the void), it is preferred to perform heat fixation. The treatment temperature for heat-fixing the film is preferably 110 ° C. 170 ° C. The treatment time required for heat setting is preferably from 1 second to 3 minutes. Further, 'there is no particular limitation on the stretching device or the like' is preferably performed by stretching the tenter which can be thermally fixed after stretching. &lt;Application&gt; The present reflective material can be used as a reflective material as it is, and the present reflective material can be used to form a structure laminated on a metal plate or a resin plate, and can be effectively used as, for example, a liquid 100125072 29 201213129 A reflecting plate used for a liquid crystal display device, a lighting fixture, a lighting panel, etc. At this time, the metal plate of the laminated reflecting material may be, for example, a name plate, a non-recorded steel plate, a galvanized steel plate, or the like. The method of laminating the present reflective material may, for example, be a method of subsequently bonding the back j, a method of performing thermal fusion without using an adhesive, a method of performing the subsequent bonding via four sheets of the adhesive, and a method of extrusion and coating. In addition, it is not limited to these methods. More specifically, a polyester or polyurethane is coated on the side of the metal plate or resin plate (collectively referred to as "metal plate or the like") to which the reflective material is bonded. An adhesive such as an acid ester or an epoxy resin can be used to bond a reflective material. • This method uses a coating device such as a reverse roll coater or a light touch roll coater to make a reflection. On the surface of the metal plate to which the material is bonded, the adhesive is applied so that the thickness of the adhesive film after drying is about 2 μm to 4 μm. Next, drying and heating of the coated surface are performed by an infrared heater and a hot air heating furnace. When the surface of the metal plate or the like is maintained at a predetermined temperature, the reflective material is immediately coated with a surface-contacting press, and after cooling, a reflecting plate can be obtained. In the use of the present reflective material, a reflective member used for a liquid crystal display device such as a liquid crystal display, a lighting fixture, a lighting panel, or the like can be effectively used. Generally, a liquid crystal display is composed of a liquid crystal panel, a polarizing reflection sheet, a diffusion sheet, a light guide plate, a reflection sheet, a light source, a light source reflector, and the like. 100125072 30 201213129 The present reflective material can also be used as a reflective material having an effect of efficiently inputting light from a light source to a liquid crystal panel or a light guide plate, or can be used to condense light from a light source disposed at an edge portion. Light is incident on the light source reflector that acts on the light guide plate. &lt;Explanation of Terms&gt; Generally, the term "film" refers to a thin flat product having a very small thickness and a maximum thickness as compared with the length and the width, and is usually supplied in the form of a reel (Japanese Industrial Standard JISK6900). Generally, "slice" refers to a flat article which is thin and generally has a thickness much smaller than the length and width in terms of JIS. However, the boundary between the sheet and the film is not determined. In the present invention, since it is not necessary to distinguish between the two in the sentence, in the present invention, the case of "film" also covers "sheet", and the case of "sheet" is called. Also covers "film". In addition, when it is described as "main component" in this specification, unless otherwise stated, the meaning of the other component is allowed to be included in the range that does not impede the function of the main component. In this case, the content ratio of the main component is not specified, but the main component (in the case where the two components or more are the main components, the total amount thereof) is 50% by mass or more, preferably in the composition. 70% by mass or more, and particularly preferably 90% by mass or more (including 100%). In the present invention, when it is described as "X to Y" (X, Y is an arbitrary number), the meaning of "X or more and Y or less" and "better than X" are included unless otherwise stated. And the meaning of "preferably less than Y". In the present invention, in the case of 100125072 31 201213129, which is described as "X or more" (X-type arbitrary number), the meaning of "better than χ" is included in the case of no special statement. In the case of the following ("any number"), the meaning of "better than Υ" is covered unless otherwise stated. &lt;Examples&gt; The following examples are given to illustrate the present invention, but the present invention is not limited to the above, and various applications can be made without departing from the technical idea of the present invention. &lt;Measurement and Evaluation Method&gt; First, the measurement methods and evaluation methods of various physical property values of the samples obtained in the examples and comparative examples will be described. Hereinafter, the direction of the traction (flow) of the film is referred to as "MD", and the direction of the orthogonal direction is referred to as "TD". Machine (void ratio) Measure the density of the extension (denoted as "unstretched thinness"), the density of the film after stretching (denoted as "extended thinness density"), and substitute it into the lower jaw to obtain the porosity of the film ( %). The void ratio W = «unstretched film density - stretched film density" / unfilmed density} X100 94 (average reflectance) In the spectrophotometer ("(10) map", manufactured by Hitachi, Ltd.) Between the wavelengths of 420 and 700 legs, the reflectivity of the gas-whiteboard was set at 4 100%. The value of the obtained measured value is calculated and regarded as the average reflectance (%). (2) Ref. ) 'Invest in a hot air oven at 80 ° C. After 3 hours, it was taken out and cooled to room temperature. Then, the distance between the SUS plate and the reflective material was measured (how many mm the reflective material became sensitive to the SUS plate). (Fightening strength) The samples prepared in the examples and the comparative examples were cut to a length of 1 〇cm and a width of 10 mm by a MIT flexural fatigue tester, and a load of 9·8 N was applied, and the reciprocating bending speed was 175 rpm and the vibration angle was about 135. . Under the conditions, the number of bends until the breakage was measured. (Arithmetic mean coarse sugar (sa) of the surface roughness of the secondary element) The surface (resin layer B) of the reflective material (sample) was observed by the following apparatus and conditions, and the obtained image was analyzed, and the arithmetic mean roughness was calculated. (The following is Sa). In addition, the calculation is based on JIS Β〇6〇ι : . Device. Electron beam three-dimensional roughness analysis device "ERA-4000" (manufactured by ELIONIX) Evaporation conditions: lOmAxlOOsec, Pt-Pd evaporation acceleration voltage: 10kV Observation magnification: 250 times analysis area • 360 (μιη) χ 480 (μηι (Light diffusibility) 100125072 33 201213129 The reflected light intensity of the reflective material (sample) is measured by the following apparatus and conditions, and the intensity ratio of the specular reflection component to the diffuse reflection component is calculated by substituting the following equation: 〇^2 (reflected light intensity of -5 degrees to 5 degrees): (reflected light intensity of 25 degrees to 35 degrees) Reflected component intensity ratio /3 = Σ (reflected light intensity of 55 degrees to 65 degrees) / Σ (25 Light intensity of ~35 degrees) Device: Automatic variable angle photometer "GP-1R type" (Murata Color Technology Research Co., Ltd.) Light source: _ plain lamp beam aperture: 10.5mm Light aperture: 4.5mm Direction: TD light incident angle of film: -30 degree reflected light receiving range: -30 degrees to 90 degrees Measurement interval: 1 degree The above-mentioned reflected component intensity ratio ce and /3 are light diffused according to the following evaluation criteria. Evaluation. Among them, the symbols "〇" and "△" are above the practical level. = evaluation standard = "〇": the intensity ratio of the reflection component 〇: and /3 are both 0.5 or more "△": the intensity ratio of the reflection component is a or 0.5 or more. 100125072 34 201213129 x": the intensity ratio of the reflection component is Hof and 0 is less than 0.5 &lt;Example 1&gt; (Preparation of resin composition a of resin layer (A)) Polypropylene resin (Nippon Polypropylene Co., Ltd., trade name "NOVATEC PP FY6HA", density (JISK7112) : 0.9 g/cm3, MFR (230 ° C, 21.18 N, JISK-7210): 2.4 g/10 min), and titanium oxide (KR0N0S company, trade name "KRONOS 2230", density 4.2 g/cm3, rutile Type of titanium oxide, Al, Si surface treatment, TiO2 content: 96.0%, production method: chlorine method), mixing at a mass ratio of 50, and then pelletizing using a twin-screw extruder heated to 270 ° C Resin composition A was obtained. (Production of Resin Composition B of Resin Layer (B)) Amorphous cycloolefin resin A (trade name "ZEONOR 1430R", density (ASTMD792): 1.01 g/cm3, glass transfer) Temperature Tg (JISK7121): 133 ° C, SP value: 7.4), and amorphous cycloolefin resin B (manufactured by Sakamoto Co., Ltd., trade name "ZEONOR 1060R", density (ASTMD792): 1.01 g/ Cm3, MFR (230 ° C, 21, 18 N, JISK-7210): 14 g/10 min, glass transition temperature Tg (JISK7121): 100 ° C, SP value: 7.4) particles, and polypropylene resin (曰本polypropylene Co., Ltd., product name "NOVATEC PPEA9", density (JISK7112): 0.9g/cm3, MFR (230°C, 21·18Ν, JISK-7210): 0.5g/10min, SP value: 8.0) After mixing at a mass ratio of 50:25:100125072 35 201213129 25, granulation was carried out using a twin-screw extruder heated to 2,303⁄4 to obtain a resin composition B. (Production of Reflective Material) The above resin compositions A and B were respectively supplied and heated to 200. (3,

Extruders A and B at 230 ° C, and smelting and kneading at 2003⁄4 and 230 〇C in each extruder, and then merging them into two 3-layer T-dies, and forming a resin layer (B) / The resin layer (A) / the resin layer (B) has a three-layer structure and is extruded into a sheet shape, and is solidified by cooling to form a laminated sheet. The obtained laminated sheet was stretched 2 times at a temperature of 130 ° C toward the MD, and then stretched 3 times at 130 ° C toward the TD, thereby performing biaxial stretching to obtain a thickness of 225 μm (resin layer (A). : 185 μm, resin layer (b): 20 μm, laminate ratio A: B = 4.6 : 1) of the reflective material (sample). For the obtained reflective material, void ratio, average reflectance, wrinkle of the reflective material, and evaluation of the folding strength were performed. In addition, regarding the void ratio, evaluation was performed on the resin layer (Α). Namely, the resin composition Α was supplied to the extruder A, and a single-layer thin enamel (thickness μ 85 μm) of only the resin layer (A) was obtained in accordance with the above operation, and evaluation was performed. &lt;Example 2&gt; In addition to the production of the resin composition of Example 1, an amorphous cycloolefin resin (manufactured by Sakamoto Co., Ltd., trade name "ZEONOR 1430R", SP value: 7.4) was used. The granules and the granules of the polypropylene resin (manufactured by Nippon Polypropylene Co., Ltd., trade name "NOVATEC ΡΡΕΑ9", SP value: 8.0) 100125072 36 201213129 are mixed at a mass ratio of 75:25, and in the example i In the fabrication of the reflective material, the obtained laminated sheet is at a temperature of 138. The M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M A): 反射9〇μηη, resin layer (B): 19/mi, laminate ratio a: B=5: 1) Reflective material (sample). The same evaluation as in Example 1 was performed on the obtained reflective material. Example 3&gt; (Preparation of resin composition a of resin layer (A)) Polypropylene resin (product name "NOVATEC PP FY6HA", density (JISK7112): 〇.9g/cm3, MFR (230 C, 21.18N, JISK-7210): 2.4 g/10 min, SP value: 8.0), and titanium oxide (KR〇N〇s company, trade name "KRONOS 2230", density 4.2 g/cm3, Rutile-type cerium oxide, Al, Si surface treatment, Ti〇2 content: 96.0%, production method: gas method), mixed at a mass ratio of 50:50, and then heated to 270. Resin composition A was obtained by performing granulation on a crucible biaxial extruder. (Preparation of the resin composition b of the resin layer (B)) Amorphous cycloolefin resin C (manufactured by Nippon Steel Co., Ltd., trade name "ZEONORRCY50", hydrogenated product of a ring-opening polymer of a cyclic olefin, density (IS01183) : l. 〇 lg / cm3, MFR (23 (TC, 21.18 Ν, JISK7210: 1.2g/10min, glass transition temperature Tg (JISK7121): 127 ° C, 100125072 37 201213129 3? value: 7.4) particles Manufactured under the trade name "ZEONOR 1060R", a hydride of a ring-opening polymer of a cyclic olefin, and a density (IS01183): 1.01 g/cm3, which is made of a non-crystalline cycloolefin resin, manufactured by Japan Co., Ltd. MFR (230 ° C, 21.18 N, JIS K7210): 12 g/10 min, glass transition temperature Tg (JISK7121): 10 (TC, SP value: 7, 4) particles, and polypropylene resin (made by Nippon Polypropylene Co., Ltd.) Product name "NOVATEC Pp ΕΑ9", density (JISK7112): 〇.9g/cm3, MFR (230°C, 21.18Ν, JISK-7210): 0_5g/10min, SP value: 8.0), according to 50: 25 After the mass ratio of 25 was mixed, the resin composition B was obtained by performing granulation using a twin Han extruder heated to 23 (TC). (Production of Reflective Material) The above resin compositions A and B were respectively supplied to an extruder 2 and B which were heated to 2 Å (2, 230 ° C, and 200 in each extruder). After melt-kneading with 2303⁄4, it is combined into two 3-layer T-dies, and is layered to form a resin layer (B) / resin layer (A) / resin layer (B) In the form of flakes, after cooling and solidification, a laminated sheet is formed. The obtained laminated sheet is stretched 2 times toward the MD at a temperature of 130 ° C, and then stretched by 3 times at 130 ° C toward the TD, thereby performing the lamination. Double-fortunately obtained a reflective material (sample) of thickness 225μηι (resin layer (A): 191 qing, resin layer (B). 17/mi, laminate ratio a: B = 5.6: 1). The material was subjected to the same evaluation as in Example 1. Evaluation of arithmetic mean roughness (Sa) and light diffusibility. Further, 100125072 38 201213129 &lt;Example 4&gt; (Production of resin composition a of resin layer (A)) Polypropylene resin (trade name "NOVATEC PP FY6HA", density (JISK7112): 0.9 g/cm3, MFR (230 °C) , 21.18N, JISK-7210): 2.4 g/10 min, SP value: 8.0) particles, and titanium oxide (KRONOS company, trade name "KRONOS 2230", density 4.2 g/cm3, rutile oxide, A1, Si surface treatment, Ti〇2 content: 96.0%, production method: gas method), mixing at a mass ratio of 5〇: 5〇, and then granulating using a twin-screw extruder heated to 270°C. Resin composition A was obtained. (Production of Resin Composition B of Resin Layer (B))

Styrene-based copolymer (manufactured by Toyo Styrene Co., Ltd., trade name "Τ〇8〇", styrene-methacrylic acid copolymer, density (IS01183): l.〇7ctn3, glass transition temperature Tg (JISK-7121) : 123. (:, MFR (200 ° C, 49 N, JISK-7210): 1.7 g/10 min, SP value: 1 〇 · 6) granules, and polypropylene resin (manufactured by Sakamoto Polypropylene Co., Ltd., Name r NO VATEC PP FY6HA", density (JISK7112): 〇.9g/cm3, MFR (230°C, 21.18N, JISK-7210): 2.4g/10min, SP value: 8·0), according to 75 : After the mass ratio of 25 is mixed, the granules are obtained by using a twin-screw extruder heated to 230 ° C to obtain a resin composition B. (Production of a reflective material) The above resin compositions A and B are respectively supplied. Extruder A and B heated to 20 (TC, 100125072 39 201213129 230 °C, and melt-kneaded at 200 ° C and 2303⁄4 in each extruder, and then combined into two 3 layers for T The die _ is extruded into a sheet form in a three-layer structure of the resin layer (B) / the resin layer (A) / the resin layer (B), and is solidified by cooling to form a laminated sheet. The laminated sheet was obtained by performing a 2-fold roll extension to the MD at a temperature of 130 ° C, and then at 130. (: 3 times stretching was performed toward the TD, thereby performing biaxial stretching to obtain a thickness of 225 / im (resin layer A) : 191/mi, resin layer Β: Ι7μηι, laminate ratio A: B = 5.6 : 1) of the reflective material (sample). The same evaluation as in Example 1 was carried out for the obtained reflective material. For Examples 1 to 4 The results of the void ratio, the average reflectance, the wrinkle, and the folding strength of the reflecting material are shown in Table 2. Further, with respect to the reflecting materials of Examples 3 and 4, the absolute value difference of the SP value, Sa, and the intensity of the reflecting component were obtained. The results of the ratio and the light diffusibility are shown in Table 3. [Table 2] Example [Table 3] 2 Void ratio (%) 6\ 63 60 Average reflectance (%) 99.70 99.80 98.90 Wrinkle below the folding strength (times) &gt; 1000 &gt; 1000 &gt; 1000 57 98.50 Example SP value difference Sa reflection component strong / (cal / cm3) 0 · 5 (μπι) intensity ratio α strong &gt; 5 3 0.6 0.85 0.94 0 4 2.6 5.5 0.83 0 〇·6〇&gt; 1000 :b Light diffusivity) 〇$ — Two kinds of resins with a 〇 value of 0.3 to 3.0 (eal/em3)G_5 can make the surface coarser 100 125072 40 201213129 The roughness (Sa) becomes 〇.5 μπι or more and the high light diffusibility can be exhibited. Further, from the relationship between the absolute value of the difference in sp value and the surface roughness (Sa), it is understood that the absolute value difference of the SP value of the blended resin affects the surface roughness (Sa). Further, it has been found that with respect to the blended resin, in consideration of the absolute value of the difference in the sp value, the blended resin is selected, whereby the heat resistance and the financial bending property can be improved. Next, 'the resin layer B of the present reflective material is designed to have a specific surface roughness (Sa) by using a blended resin having a specific value of the sp value in a specific range, thereby exhibiting light diffusibility. Then, the following experiment was carried out (refer to Reference Examples 1 and 2). &lt;Reference Example 1&gt; (Production of Resin Composition B of Resin Layer B) A pellet of an amorphous cycloaliphatic resin C (manufactured by Nippon Steel Co., Ltd., trade name "ZEONORRCY 50", SP value: 7.4), After mixing with a non-crystalline cycloolefin resin (manufactured by Sakamoto Co., Ltd., trade name "2 ugly period 11 1060 ft", 3 valence: 7.4), the granules are mixed at a mass ratio of 67:33. The resin composition was prepared by granulation using a twin-screw extruder heated to 2,300 Torr. (Production of Biaxially Stretched Sheet) The above resin composition Β was supplied to be heated to 230. The (: extruder) was melt-kneaded at 230 ° C in an extruder, extruded into a sheet shape from a τ-type die, and solidified by cooling to form a sheet. The obtained sheet was at a temperature of 13 (rc 100125072). 41 201213129 After the 2x roll extension of the MD, and then 13 〇. 3 Β Β 3 3 times stretcher extension 'by this biaxial extension, you get a thickness of 18 〇 j [im biaxially extended sheet. The biaxially stretched sheet was obtained, and the arithmetic mean roughness (Sa) and the light diffusibility were evaluated as in Example 3. <Reference Example 2 &gt; (Preparation of Resin Composition B Resin Composition B) Directly styrene copolymerization A pellet of the product (trade name "Ding 080", 8: value: 10.6) was used as the resin composition 3. (Production of Reflective Material) The resin composition B was pressed at a heating temperature of 190 ° C. Pressing was carried out under the conditions of a pressure of 2 MPa, a pressurization time of 10 minutes, and a cooling time of 15 minutes to obtain a pressed sheet (sample) having a thickness of 180/xm. The same evaluation as in Reference Example 1 was carried out on the obtained pressed sheet. 2 sheets 'the absolute value difference of the sp value, Sa Reflection component intensity ratio, and the result of the light diffusion are shown in Table 4. [Table 4]

SP value difference (cal/cm3) 0'5 Sa (μπι) Reflected component intensity ratio light diffusivity intensity ratio Of intensity ratio iS Reference example 1 0 0.41 0 0 X 2 0 0.61 0.16 0.25 X Reference examples 1 and 2 are assumed The resin layer (B) of the present reflective material was set to be a non-blended resin. Since these were specific to the monomer resin, the SP value was not deteriorated, and the intensity ratio of the reflected component shown in Table 4 was also confirmed to show no light. Expansion 100125072 42 201213129 Diversification. Therefore, it has been found that the resin layer (B) of the present reflecting material exhibits light diffusibility, and the surface roughness (Sa) of the resin layer (B) must be 0.5 μm or more by the blending resin. * BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view for explaining a wrinkle evaluation method carried out in the embodiment. 100125072 43

Claims (1)

201213129 VII. Patent application scope: 1. A reflective material having at least one side of a resin layer (A) having a void therein, and having a resin layer of two or more thermoplastic resins having different solubility parameters (SP values) (B) In the case where the tree layer (B) is a combination of thermoplastic resins having different solubility parameters (sp values), the arithmetic mean roughness (Sa) of the three-dimensional surface roughness is 0.5 μm or more. 2. A reflective material having at least one side of a resin layer having a void therein, having an absolute value difference containing a solubility parameter (sp value) of 〇·3 to S.OM/cm 3 ) 0·5 Two or more resin layers (8) of thermoplastic resin. 3. In the case of the reflective material of claim 2, the absolute difference in solubility parameter (Sp value) is 0.3 to SC^cal/cm3). The two or more thermoplastic resins are composed of the resin layer. The total amount of the resin of (B) is 7 〇 mass% or more. 4. The reflective material according to any one of claims 1 to 3, wherein at least one of the resins constituting the resin layer (B) is amorphous having a glass transition temperature (JISK7121) of 85 to 15 〇t: Resin. 5. The reflective material according to claim 4, wherein the amorphous resin is a cycloolefin resin. 6. The reflective material according to any one of claims 1 to 5, wherein the resin layer (A) contains a fine powder filler. 7. The reflective material according to any one of claims 1 to 6, wherein the resin layer (A) has a porosity of 2% or more and 70% or less. The reflective material according to any one of the first to seventh aspects of the present invention, wherein the resin layer (A) contains an olefin resin. 9. The reflective material according to any one of claims 1 to 8, wherein the resin layer (B) is located at the outermost layer as a reflective use surface of the reflective material. 10. The reflective material according to any one of claims 1 to 9, wherein the total thickness ratio of each of the resin layer (A) and the resin layer (B) is (A): (B) = 3 : 1~ 15 : 1 . 11. The reflective material according to any one of claims 1 to 10, which is used as a constituent member of a liquid crystal display, a lighting fixture, or a lighting kanban. 100125072 45