TW201114595A - Film cutter - Google Patents

Abstract

Provided is a film cutter using a lactic acid-based resin as a material, wherein the film cutter has excellent cutting properties, can be easily attached to a paper storage container, and can provide a sufficient adhesion strength. The film cutter is formed of a laminate composed of a layer (I) which contains 70 parts by mass to 100 parts by mass of a lactic acid resin (A-1) having a quantity of heat of crystal fusion (?Hm) not less than 30J/g, and 0 parts by mass to 30 parts by mass of inorganic fine particles (B), and a layer (II) which is formed on at least one surface of the layer (I) and which contains 51 parts by mass to 95 parts by mass of a lactic acid resin (A-2) having a quantity of heat of crystal fusion (?Hm) between 0 J/g and 25 J/g, and 5 parts by mass to 49 parts by mass of an ethylene copolymer (C). The laminate is stretched in at least one direction.

Description

[Technical Field] The present invention relates to a plastic material which is excellent in adhesion to a paper containing a storage box such as a wrap film, and which has the same cutting property as a metal blade. Film cutter. [Prior Art] Films such as cling film, aluminum foil, and baking paper are stored in a paper storage case (carton) in a state of being wound around a paper tube, etc., and are taken out from the storage case when necessary. The length is cut and used by a serrated film cutter. Conventionally, such a film cutter is mostly made of metal, and is attached by, for example, engaging at the edge of the front plate, the bottom plate, or the cover of the storage case. However, the metal sanctions cutter is excellent in cuttability, but on the other hand, when it is discarded, if it is directly incinerated, it will burn residue, and it is necessary to remove it one by one and then discard it. From this point of view, there is a replacement for the metal sanctions cutter, which is replaced by a proposal paper sanction cutter, a plastic sanction cutter, and a special biodegradable plastic sanctions cutter. Paper sanction cutters can be roughly classified into two types: "resin-hardened paper blade" and "VF blade". This resin-hardened paper blade is made of a sheet of paper, and is coated with a thermosetting resin or moistened with a so-called "resin-hardened paper blade". The VF blade is a raw material paper made of cellulose fibers, which is integrated by a layer of a thick layer by a swelling gelation of zinc chloride, and then the zinc chloride is extracted and removed, and dried to obtain a hardened fiber. 099124122 4 201114595 Dimensions, which are used as materials to form a moisture-proof film thereon, and then penetrated into a zigzag shape to form a so-called "VF blade" of a cutter. The method of attaching the paper sanction cutter to the storage box is generally a method of performing the subsequent method by applying the adhesive coating on the storage box or the cutter, and there is a method of performing the subsequent method by the ultrasonic welding method ( Patent Document 1). Although these paper sanctions cutters can solve the above-mentioned problem of metal sanctions cutters, the undeniable cutting performance and cutting durability are inferior to those under the metal sanctions cutter. This is especially true for polyethylene and polyvinyl chloride cling films that have a large film extension. On the other hand, in the case of a biodegradable plastics sanitizer, there is a proposal to use a polylactic acid-based resin which is a resin derived from a plant such as maize, and a film cutter as a main component (Patent Document 2, Patent Document 3) ). Since the starting materials are derived from plants, depleted resources can be saved. However, such a film cutter having a polylactic acid-based resin as a main component has a cutting property and a cutting durability which are slightly the same as those of a metal sanctions cutter, but is mounted on a storage box paper. There is a problem of the strength of the fixing when the material is on the material. That is, when the metal sanctions cutter is fixed by the meshing method, the material is insufficiently deformed because the material is not easily plastically deformed. Moreover, if the paper sanction cutter is fixed by the ultrasonic welding method, the fixing strength may be insufficient. Therefore, a method of applying an adhesive or a step of bonding via an adhesive is required, and as a result, there is a problem that the manufacturing cost is increased. Here, in order to solve such a problem, there is a proposal to construct a milk (four) resin having a specific ratio of 099124122 5 201114595 D. The patent document technology is better than the paper, but It is necessary to have a long-term (four), (10) χ 性 性 性 四 四 四 四 四 四 四 四 四 四 四 先前 先前 先前 先前 先前 先前 先前 先前 先前 先前 先前 先前 先前 先前 先前 先前 先前 先前 先前 先前 先前 先前 先前 先前 先前 先前 先前 先前 先前 先前 先前 先前 先前 先前 先前[Patent Document 3] Japanese Patent Laid-Open Publication No. Hei. No. Hei. No. s. The problem to be solved) is the cutting property (also known as "cutting property") of the resin-made job-cutting device and the cutting-edge property, and the other is: it is difficult to obtain the difference between the paper and the box. The problem of attaching a strong surface to the film cutter is to install the film cutter on the storage box. The invention is to provide a cutter, which is not only excellent (four) broken & Breaking' can also be easily installed on paper and can be obtained with sufficient fixing strength Cutting ~, (Means for Solving the Problem) The film cutter proposed by the present invention is a film formed of a rigid laminated body (4), and has an early layer AHm ^ 3 Ω Γ / , t * °. (1) The crystallization of the crystallization of the crystallization of the lactic acid system on the rider w is 7 〇 mass parts on the ratio of 099124122 201114595 and 100 parts by mass or less, and the J inorganic fine particles (8) having a mass or more and 30 parts by mass or less contain 0 mass ΔHm. _ above, 25 J/g column 'This layer (8) is more than the mass fraction of the heat of crystal melting, the part below the mass = the acid base 2) 'containing 51 parts by mass or more, .49 parts by mass ^ and the ethylene copolymer (The ratio of the 〇 inclusions in at least the 丄 direction. The ratio of the Λ ; ; ; ; ; ; ; ; 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本And the layer (11) for the function is both quantitatively formulated, and the splicing property with the paper material is: the same as the sanction cutter. Month <=* easily installs the film cutter to the reinsurer by layer (1) (which is composed of < ^ 疋 疋 lactic acid 糸 resin (A-1) as the main material), and layer (11) (This is composed of a predetermined material: W King's material, -2 系 系 resin (A-2) and ethylene copolymer (C)), which can be manufactured by co-extrusion. The matter of the layered body is also one of the characteristics. According to the film cutter of the present invention, for example, the layer (11) is placed so as to be superimposed on the paper surface of the storage box, and the film is fixed on the paper surface of the storage by using the supersonic connection. Storage box for the cutter. [Embodiment] Hereinafter, an example of an embodiment of the present invention will be described. However, the scope of the present invention is not limited to the embodiment described below. <Laminar structure> 099124122 7 201114595 The laminated body of the present embodiment (hereinafter referred to as "the present laminated body") is a laminated body used for forming a film cutter, and is provided with a predetermined lactic acid-based resin (A- The layer (1) of 1) and the layer (II) containing a predetermined lactic acid-based resin (A_2) and a vinyl-based compound (C); a layered body of the layered product: at least one side of the layer (I) The layer (11) may be provided, for example, a layer (11) may be provided on both sides of the layer (I), and a layer (II) may be provided on one side of the layer (1), and in the layer ( There are any layers on the back side of II), and there is no problem in practical use. Furthermore, other layers may be interposed between the layer (I) and the layer (II). The thickness of the layer (1) is preferably 180 μm or more and 4 Å/xm or less, more preferably 200 qing or more and 380 or less, and particularly preferably 22 or more and 35 〇/mi or less. On the other hand, the thickness of the layer (II) is preferably 3 μm or more and 100 μm or less, more preferably 5/mi or more and 80/mi or less, and particularly preferably 1 μm or more and 5 μm or less. By using a laminate having a layer (1) and a layer in the range, a film cutter having excellent rigidity, mechanical properties, cuttability, and heat resistance can be provided. <Layer (1)> The layer (I) is a layer having a substrate function in the laminate, and includes a predetermined lactic acid resin (Α-1), optionally inorganic fine particles (Β), and, if necessary, A layer of the ethylene-based copolymer (C). 099124122 8 201114595 (Lactic acid-based resin (A-1)) A chyle-based resin (eight _; 1) can be used, for example, a poly(lactide) having a structural unit of L lactic acid and a poly(D) having a structural unit of D lactic acid. Lactic acid), a poly(DL lactic acid) having a structural unit of ethyl lactose S 夂 human D lactic acid, or a mixed resin thereof. Further, a copolymer such as a hydroxycarboxylic acid or a diol/dicarboxylic acid can also be used. The layer (I) is adjusted by optimizing the ratio of the L-lactic acid (L body) to the D-lactic acid (D body) in the lactic acid resin (A-1) (the molar ratio). The best, eloquent and enthusiasm. That is, it is preferable to optimize the crystal melting heat ΔΗιη of the lactic acid resin (A-1) by optimizing the ratio of the L-lactic acid (L body) to the D-lactic acid P body (Mohr ratio). For up to 3〇j仏. When the AHm of the right lactic acid resin (A-1) is 30 J/g or more, the strength of the layer (1) which is the substrate of the film cutter can be sufficiently maintained, and the cutting property can be sufficiently improved. From this point of view, it is more preferable to adjust the heat of crystallization ΔHm of the lactic acid resin (A-1) to 35 J/g or more, and the special system is adjusted to be * or more. Further, the upper limit of the lactic acid-based resin (A-1) does not need to be particularly set, and in Vietnam, the strength is increased, and the performance of the film-cutting stencil-making blade can be fully utilized. For example, it is preferable to use a L-body/D-body = 100/0 to 97/3, or a lactic acid-based resin having a body melon = 0/100 to 3/97 (A small υ, and a l body/D body = 97/3). The lactic acid-based resin (A small 2) of ~85/15 or 3/97 to 15/85 is adjusted to the crystal melting of the lactic acid resin (A-1) by mixing at a ratio of 1 to 50/5" mass ratio. The heat Mim is 30 J/g or more. In particular, it is preferably mixed according to the ratio of 099124122 〇201114595 100/0 to 90/10, and the special product is mixed at a ratio of 100/0 to 95/5. Further, the lactic acid resin (A-1) may be a copolymer of a hydrazine hydroxy acid, an aliphatic diol or an aliphatic dicarboxylic acid as described above. In this case, the copolymerization of the lactic acid resin is "0!- For example, an optical isomer of lactic acid (D-lactic acid for L-lactic acid, L-lactic acid for D-lactic acid), glycolic acid, 3-hydroxybutyric acid, 4-hydroxyl group Bifunctional groups such as butyric acid, 2-hydroxy-n-butyric acid, 2-hydroxy-3,3-dimercaptobutyric acid, 2-hydroxy-3-mercaptobutyric acid, 2-mercaptolactic acid, 2-hydroxyhexanoic acid Aliphatic hydroxy-carboxylic acid; or lactones such as caprolactone, butyrolactone, valerolactone, etc.; Examples of the "aliphatic diol" to be copolymerized include ethylene glycol, 1,4-butanediol, and 1,4-cyclohexanedikecanol; and "aliphatic dicarboxylic acid" may, for example, : succinic acid, adipic acid, suberic acid, azelaic acid, and dodecanedioic acid, etc. The polymerization method of the lactic acid-based resin may be a polycondensation method, a ring-opening polymerization method, or another known polymerization method, for example, a polycondensation method. In the case of L-lactic acid, D-lactic acid, or a mixture of these, direct dehydrogenation and polycondensation can be carried out to obtain a lactic acid-based resin having an arbitrary composition. Further, in the ring-opening polymerization method, the ring-shaped lactic acid is The lactide of the polymer can be obtained by using a selected catalyst, such as a polymerization regulator, to obtain a polylactic acid-based polymer. In this case, the lactide system can be used, for example, as belonging to L-lactic acid. a L-lactide of a polymer, a D-lactide belonging to a dimer of D-lactic acid, or a DL-lactide composed of L-lactic acid and D-lactic acid, which is carried out as required by 099124122 10 201114595 By mixing and polymerizing, it is possible to form a crystalline lactic acid resin. *Thinking the required cylinder step (4) Heat resistance (4)' In the range that does not impair the original properties of the lactic acid yttrium, that is, in the range of 90% by mass or more of the lactic acid, and the saponin component, it is possible to add a small amount of comonomers. a non-aliphatic dicarboxylic acid such as citric acid, or such as a double

A non-aliphatic diol such as an ethylene oxide adduct of Rt. Further, for the purpose of increasing the molecular weight, a small amount of chain extension such as a heterogeneous compound, an epoxy compound, an acid anhydride or the like may be added. The weight average molecular weight of the lactic acid resin (A-1) is preferably 50,000 or more, more preferably 100,000 or more, and 250,000 ΡΡ.., the body is the underarm. If it is below and above this range, better practical properties can be obtained, and Dings W is below the upper limit because there is no possibility that the melt viscosity is too high. K-good forming process (inorganic fine particles (B)) In the layer (1) of the laminated body, the inspection property of (9) the most bamboo material is improved for the purpose of improving the safety of the film cutting, etc. Into inorganic fine particles (B). ..., machine microparticles (B) can be used, for example, slip _ J α stone, kiln soil, calcium carbonate, % run soil, mica, sericite, two > garbage chips, magnesium strontium oxide, aluminum hydroxide, > - Dimethoate g夂钡, titanium oxide, lead titanate, potassium titanate, oxidized error, sulfur 'Xin oxidation record, zinc oxide, bismuth zinc, water-bearing stone fat mom, oxidation Ming, Qian, Shi Xi Gray stone, hard stone, stone (z〇n〇tIlte), sepiolite, whisker, glass fiber, 099124122 11 201114595 Glass shards, metal powder, beads, can be used alone. Eve airbags, Shixi rubber airbags, etc. Any one of these may be used in combination of two or more. The lower addition of Dangu (10) is achieved by using a refractive index of h6 or higher, and the second phase gives concealment and excellent visibility. Inorganic fine particles having a rate of up to 16 (extra money of 2. G or more) may be, for example, oxidized banknotes, #^11黾钡, rolled magnesium, zinc oxide, zinc sulfide, or oxygen partial. , potassium titanate, titanic acid, titanium oxide, and the like. In particular, it is preferred to blend the rolled titanium into a refractive L-orientation orientation. Said, the average particle size of the machine particles, system ~ Qing ~ plus. If the average particle k (four) 0 · 1 Qing ~ 5 (four), better than # # ^ ^ ΛΑ ^ μΐΠ below, because inorganic particles are difficult to become the starting point of damage, because Flat and mu U can maintain the strength and elongation of the film cutter, right, 'average particle size is more than lMm, because inorganic particles are difficult to aggregate' and thus it is not easy to cause poor dispersion, so it is better. In addition, the "average particle diameter" in this invention means the measured D50 value.田π九#丁次(Ethylene-based copolymer (〇) = layer::: (1) It can be blended into a B-women copolymer under the further prevention of peeling between the layers of the layer _ (〇. B (tetra) polymer (C) of the 'wire material (6) material) Therefore, for example, the two ends of the laminated body can be subjected to the loss of the ruthenium of the shipman layer (1), without material waste.情 099124122 12 201114595 Shape, up to reduce material costs. (Content ratio of layer (I)) The proportion of lactic acid resin (A-1) in layer (I) is relative to the lactic acid system (8) The total content of the inorganic fine particles (B) is 1 part by mass, preferably 70 parts by mass or more and 1 part by mass or less, more preferably 8 parts by mass or more and 100 parts by mass or less, and particularly preferably 9 parts by mass or more '1〇〇 parts by mass or less. If the content ratio of (A-1) is 7 parts by mass or more, the rigidity and heat resistance of the lactic acid-based resin can be maintained. Detector sex

Further, since the inorganic fine particles (8) are optional components, they may be in the form of yt parts by mass (that is, they are not contained), and the content ratio of the inorganic fine particles (8) is contained in the total amount of the lactic acid-based resin (A-1) and the inorganic fine particles (8). 1 parts by mass, preferably in parts by weight or more, 3 parts by mass or less, more preferably (4) parts by mass or more and 2 parts by mass or less, and particularly preferably 5% by mass or more and 15 parts by mass or less. It is preferably 1 part by mass or more and 1 part by mass or less. When the inorganic fine particles (8) are contained, if the amount is more than 1 part by mass, the film is cut to a sufficient extent, and the inspection of the material is sufficient, so that the safety of the treatment can be improved. On the other hand, if it is below 3Gf parts, the elongation step in the manufacture of the film cutter can suppress the occurrence of voids at the interface between the resin and the inorganic fine particles, and can prevent the film cutter from being lowered or damaged. The situation of cut off occurs. 099124122 13 201114595 Further, in the layer (i), since the ethylene-based copolymer (c) is an optional component, it may be in the form of 〇f (i.e., not contained), but when the ethylene-based copolymer (6) is contained, The total content of the lactic acid resin (A-1), the inorganic fine particles (B), and the ethylene copolymer (C) in the layer (I) is 10 罝 罝, preferably 〇 5 parts by mass or more, 1 The ratio of the following parts by mass is more preferably 1 part by mass or more and 1 part by mass or less, and particularly preferably 3 parts by mass or more and 10 parts by mass or less, and most preferably 5 parts by mass or more and 10 parts by mass or less. Further, the 'layer (1)' may be added to an additive such as an ultraviolet absorber, a light stabilizer, an antioxidant, a plasticizer, a nucleus agent, a lubricant, a pigment, a dye or the like insofar as it does not impair the effects of the present invention. <Layer (11)> The layer (II) is a layer which functions as a fixing layer (for example, an ultrasonic fusion layer) in the laminate, and contains a predetermined lactic acid resin (A-2) and an acetonitrile copolymer. The layer of matter (C). (Lactic acid-based resin (A-2)) For the lactic acid-based resin (A-2), for example, poly(L lactic acid) having a structural unit of 1 lactic acid and poly (D lactic acid) having a structural unit of D lactic acid can be used, and the structural unit is l Poly (DL lactic acid) of lactic acid and D lactic acid, or a mixed resin of these. Further, copolymers such as α-hydroxycarboxylic acid or diol/dicarboxylic acid may also be used. Preferably, the layer (π) is adjusted by optimizing the ratio of the L-lactic acid (L body) to the D-lactic acid (D body) in the lactic acid resin (Α-2) (Mohr ratio). The best crystal melting heat ΔΗιη. That is, it is preferred to optimize the ratio of lactic acid resin (A-2) by optimizing the ratio of L-lactic acid (L body) to 〇_乳099124122 14 201114595 acid (D body) (Mohr ratio). The crystal melting heat AHm is adjusted to 〇J/g or more and 25 J/g or less. When the heat of crystallization of the lactic acid resin (A-2) is ΔΗπι of OJ/g or more, the heat resistance of the layer (II) can be maintained, and fusion can be suppressed between the plastic blades during production, transportation, storage, and use. In the case of (adhesion), if the crystal melting heat ΔHm of the lactic acid cerium resin (A-2) is 25 J/g or less, the crystallinity of the layer (Π) is not excessively high, so that the ultrasonic fusion can be sufficiently improved. Sex. From this point of view, the crystal melting heat ΔHm of the lactic acid cerium resin (A-2) is preferably adjusted to be 5 J/g or more, more preferably 7 J/g or more, particularly preferably i 〇 j/g or more, and the other In particular, it is preferably adjusted to be 23 J/g or less, more preferably 20 J/g or less. More specifically, 'L-body/D body=1〇〇/〇~97/3, or L-body/D-body=0/100~3/97 lactic acid resin (A-1-1), and l The lactic acid resin (^-2) of the body/D body = 97/3 to 85/15 or 3/97 to 15/85 is mixed to form a lactic acid resin (A-Μ) and a lactic acid resin (A) The quality of _2) is preferably 0/100 to 40/60 ratio, more preferably 〇/丨〇〇~20/80 ratio, and particularly preferably 0/100 to 10/90 ratio. When the proportion of the lactic acid resin (height)-2) is 6 〇 mass% or more, the ultrasonic fusion property can be sufficiently improved when the crystallinity of the layer (II) is not excessively high. Further, it may be a copolymer with an α-hydroxycarboxylic acid, an aliphatic diol, and an aliphatic diremediate acid. In this case, the "hydrazine hydroxycarboxylic acid" which is copolymerized in the lactic acid resin can be 099124122 15 201114595

For example, an optical isomer of lactic acid (D-lactic acid for L-lactic acid, L-lactic acid for D-lactic acid), glycolic acid, 3-hydroxybutyric acid, 4-hydroxybutyric acid, 2_ Bifunctional aliphatic radicals such as butyric acid, 2-carbyl-3,3-dimethylbutyric acid, 2-diyl-3-methylbutyric acid, 2-methyllactic acid, 2-ylhexanoic acid Examples of the "aliphatic diol" such as caprolactone, butane vinegar, and pentane vinegar; and the "aliphatic diol" which is commonly used in the lactic acid resin is, for example, ethylene glycol or butylene glycol ring. Dimethyl methoxide or the like is exemplified; and "aliphatic bismuth" may, for example, be rye, adipic acid, suberic acid, sebacic acid, or dodecanedioic acid. The polymerization method of the lactic acid resin may be a polycondensation method, a ring opening polymerization method, or another known polymerization method. For example, in the polycondensation method, L•lactate or D_lactic acid, or a mixture thereof, can be directly subjected to dehydrogenation polycondensation to obtain a lactic acid resin having an arbitrary composition. Further, in the ring-opening polymerization method, a vinegar which is a cyclic dimer of lactic acid is used, and a selected catalyst can be used in the case of using, for example, a polymerization regulator, etc. body. In this case, the vinegar system may use, for example, a τ6 ▲ parent S day belonging to a dimer of L-lactic acid, a D-parent ester belonging to a dimer of D-lactic acid, or a mixture of L-lactic acid and lactic acid. The lactic acid-based resin having any desired composition and crystallinity can be obtained by performing polymerization by mixing and mixing as needed. In order to further improve the heat resistance, etc., it is necessary to prevent the original properties of the lactic acid resin from being affected, and g ί7 is in the range of 9 〇 mass / 〇 or more in the chylo resin component. To be a non-aliphatic diamic acid such as an ethylene oxide adduct of terephthalic acid 099124122 201114595 A or a non-aliphatic diol such as a blister. Further, in order to increase the molecular weight, a small amount (10) of an extender, for example, an equivalent compound, an epoxy compound, acid field, or the like may be added. The weight average molecular weight of the lactic acid resin (A·2) is preferably 50,000 or more, and more preferably 10,000 or more and 250,000 or less. If it is lower than this range, it will hardly be sturdy (four). On the other hand, if it is super, the melting viscosity will be too south and the forming process will be poor. (Ethylene-based copolymer (Q) The ethylene-based copolymer (C) is a copolymer which can be copolymerized with ethylene, and can be exemplified by, for example, women's vinegar, ethyl vinegar, acrylic acid, or (meth) Select at least i or more of the group consisting of acrylic acid, ethyl (meth)acrylate, (meth)acrylic acid, succinic acid anhydride, and (fluorenyl)acrylic acid oxime The copolymer may be exemplified by ethylene ethyl phthalate copolymer, ethylene benzoic acid copolymer, ethylene (meth) acrylic acid copolymer, acetamidine (methyl) ) B-cobalt B-copolymer, B; acetic acid B-touch • Shun Dijiu copolymer, ethylene • propionate, cis-butyl succinate copolymer, ethylene · (meth) acrylate % oxygen Co-S copolymer, Ethyl acetate, Ethyl acetate, (meth) acrylate, propylene glycol copolymer, ethylene, methyl (meth) acrylate, (meth) acrylate, propyl acrylate copolymer, etc. The crystal melting temperature Tm of the ethylene-based copolymer (c) is preferably 4 (rc or more, 099124122 17 201114595 9 〇 ° C or less, more preferably 45T: or more, 85 ° C or less, particularly preferably 5 (rc or more, 80 ° C or less. Further, the heat of crystal melting of the ethylene copolymer (C) is preferably 1 J / g or more, bribe / g or less 'better 5; /g or more, _g or less, particularly preferably 10 J/g or more and 8 〇J/g or less. If Tm is at least the lower limit of the range, the crystallinity of B is not too low. In the case of pure addition, etc.. - If the correction does not have the upper limit of the viscosity range, then the ethylene system will fully improve the ultrasonic fusion. "I. Crystallinity will not be too high, can be Huihui糸v, the polymer (C) will be inferior to the amount of B. The amount of %::::, the amount of tenderness is more than or equal to 45% by mass, and the more preferred is less than 15% by mass. 20% by mass or more, 40% at this time, if the total of the comonomers is included

If the content is 10% by mass or more, the compatibility between the lactic acid-based resin is good, and the upper I + does not occur in the appearance of the layer (1) and the layer (1 round without _away, if at 50 mass) 〇/〇Following, 俥可皮丨 ^ ^ ^ W 3 PJ Ethylene copolymer has reduced crystallinity, 俾 can make the handleability good, and it can be attached to the heating roller. The ethyl acetate-based copolymer can provide a special addition to the above-mentioned ethylene-based copolymer (c), the ethylenic copolymer, and the ethylene/methacrylic acid methyl 099124122 18 201114595 are superior in ultrasonic welding properties, and have an appearance and a handleability. The film-cutting agent of the ethylene-vinyl acetate copolymer is preferably 15% by mass or more and 45% by mass or less, more preferably 20% by mass or more and 40% by mass or less. Further, the content of the oxime methacrylate copolymer is preferably 10% by mass or more and 30% by mass or less, more preferably 20% by mass or more, more preferably 40% by mass or less. Department 15 mass% or more, 25 mass In the following, it is preferably 15% by mass or more and 20% by mass or less. (Content ratio of layer (II)) The content ratio of the lactic acid resin (A-2) of the layer (II) is based on the lactic acid resin (A- 2) The total content of the ethylene-based copolymer (C) is 100 parts by mass, preferably 51 parts by mass or more and 95 parts by mass or less, more preferably 55 parts by mass or more and 90 parts by mass or less, particularly preferably 60 parts by mass. The content of the ethylene-based copolymer (C) is 100 parts by mass based on the total content of the lactic acid-based resin (A-2) and the ethylene-based copolymer (C). It is preferably 5 parts by mass or more and 49 parts by mass or less, more preferably 10 parts by mass or more and 45 parts by mass or less, particularly preferably 20 parts by mass or more and 40 parts by mass or less. When the ratio of the ethylene-based copolymer is less than the range Therefore, sufficient ultrasonic welding strength cannot be obtained. On the other hand, if the range is exceeded, since the vinyl copolymer will become the matrix resin (sea of the island structure) in the layer (II), when the paper is ultrasonically welded, When the film cutter gives stress, cohesive failure will occur. 099124122 19 201114595 The situation leads to the inability to obtain sufficient ultrasonic fusion between the paper and the paper. In addition, in the layer (II), in the range which does not impair the effect of the present invention, it is also possible to incorporate, for example, an ultraviolet absorber and a light stabilizer. Additives such as antioxidants, plasticizers, nucleating agents, slip agents, pigments, dyes, etc. &lt;This laminated body&gt; The focus of the laminated body is that it extends at least in one direction, and can be formed by extending at least in one direction. A film cutter having excellent rigidity, mechanical properties, film cuttability, and heat resistance. The stretch ratio of the laminate is preferably 2 times or more, 16 times or less, and more preferably 3 times or more by area magnification. 12 times or less, particularly preferably 4 times or more and 9 times or less. When extended in this range, it is possible to provide an excellent film cutter excellent in rigidity, mechanical properties, film cuttability, and heat resistance. Further, by performing heat treatment (heat setting) in a range of 100 ° C or more and 150 ° C or less after stretching, more excellent heat resistance and mechanical properties can be imparted. The density of the laminate is preferably 1.19 g/cm3 or more and 1.51 g/cm3 or less, more preferably 1.20 g/cm3 or more and 1.48 g/cm3 or less, and particularly preferably 1.21 g/cm3 or more and 1.41 g/cm3 or less. If the density of the laminate is within the above range, the rigidity of the film cutter can be maintained, and the cutting property can be maintained. The rigidity of the cutter is lowered and the cutting property is also lowered. &lt;Manufacturing Method of Present Laminate&gt; The method for producing the laminated body will be described below. The manufacturing method of the laminated body can be manufactured by a well-known method. That is, in the example 099124122 20 201114595, the girth (), the resin (A), the inorganic fine particles (B), and other resins are added with M, and mixed and kneaded in such a manner as to achieve the above mixing ratio, and then the material axis or double reduction It can be obtained by the operation of the four-machine squeezing gorge. m, layer (II) • The lactic acid resin (4), the acetamidine copolymer (c), and other resins are mixed and kneaded in such a manner that the mixing ratio is added. It can be obtained by extrusion using a uniaxial or twin-screw extruder. The layering method of layer (I) and layer (II) can be utilized, for example, co-extrusion, extrusion lamination, heat lamination, dry layer In the case of co-extrusion, the layer (1) and the layer (π) can be laminated by using a plurality of extruders, and the resin can be joined by a splitter or a multi-manifold mold to obtain a laminate. The body m step (4) heat, frequency strength, it is best to follow the above steps to obtain the layered body 'Lan Ru | 〖 method, tenter method, (four) method, etc. to extend uniaxial or biaxial. : use uniaxial or lactic acid resin (A), inorganic fine particles (B), and other tree sorghum and additives In the twin-screw extruder, after extrusion from a τ-type die, an I-die, or the like, a single layer body which becomes the layer (1) can be obtained by using, for example, a roll method, a tenter method, a roll method, or the like. When the lactic acid resin-(A), the ethylene-based copolymer (C), and other resins and additives are extruded from a T-die, an I-die, or the like using a single-shaft or twin-screw extruder, The laminate can be obtained by laminating the above layer (I) while performing casting. In the case of heat lamination and dry lamination, the lactic acid resin (A), the inorganic fine particles (B), and other resins are used. A mixture of the additive and the uniaxial or biaxial 099124122 21 201114595 extruder is used to carry out the monolayer from the τ-type die and the first-class extruder. Further, the same method is used to prepare the lactic acid-based resin B. The thin copolymer (C), and other resins and additives are formed, and then the layer (1) and the layer (8) are laminated under heating or by laminating between the layers to obtain at least one side of the layer (1). In addition, after the laminate is stretched, the heat of the laminate is suppressed. The shrinking and bungee are heat-set while holding the extended sheet. Usually, when the method is used to heat the contact after the contact is extended, the # tenter method is used to hold the sheet with the jig. Heat setting. The heat setting temperature varies depending on the mixing ratio and type of the resin. However, it is preferable to perform heat setting according to the range of more than 1 t and less than 1 thief. In addition, the super sound dragon is further improved: For the purpose of performance, the surface of the layer may be subjected to corona treatment, etc.: surface treatment such as electric treatment or flame treatment. Further, the extension condition is such that the density of the laminate is increased by less than (10), and more preferably, 9., 围 = _ thief above, MM. If the extension temperature is at the lower limit of the range ^ can inhibit the occurrence of pores during the extension, prevent the density from decreasing, the fruit can prevent the rigidity and cutting property of the film cutter reduce. If: = the _ up ~, because the milk _ fat = when extended, due to the expansion of the face, and _ will not break. Further, the area stretching ratio is preferably 3 times or more and 16 times or less, more preferably 099124122 22 201114595 ' 12 times or less on the 乂, and 5 times or more and 1 〇 or less. When the area stretching ratio is equal to or greater than the lower limit of the range, uneven thickness distribution does not occur at the time of extension, and the cut resistance can be prevented from being lowered. On the other hand, when the area stretching ratio is equal to or less than the upper limit of the range, it is possible to suppress the occurrence of voids in the film during stretching. The density can be prevented from being lowered, and as a result, the rigidity and the cutting property of the film cutter can be prevented from being lowered. . &lt;Production of Film Cutter:&gt; This laminated system is obtained by cutting a saw blade shape using a Thomson blade or the like as shown in Fig. 1 and the like. However, the film cutter &lt;with the shape of the jaw cutter is not limited to the shape shown in Fig. 1. Storage box> 斤1 film cutter, which is attached to the front panel, bottom plate, or Μ柘笪\ display plate 4 of the paper storage box (carton) by overlapping layers (Π) In the configuration, the super-theta wave is spliced and fixed, whereby the storage box can be mounted on the storage box to form a storage box having a film cutter. Then, such a storage case having a film cutter can store a film such as a wrap film, a crucible, or a baking paper in a state of being wound around the paper. &lt;Description of Terms&gt; Generally speaking, "post y ^ , ^ 得月" means a flat product which is thin in the definition of JIS, generally in thickness 、, in length and width; generally referred to as "thin film" means Compared with the length of the spot, the thickness is extremely small, and the thin flat t which is arbitrarily limited in maximum thickness is usually supplied in the form of a drum (Japanese Guardian specification 099124122 23 201114595 JISK6_). For example, in the case of the relevant thickness, those who find m or more in a narrow sense are called "sheets" and those who are less than 100/xm are called "films". However, the boundary between the sheet and the film is not determined as 'the towel of the present invention, because there is no need to distinguish between the two in the text. Therefore, in the present invention, the case of "film" also covers "sheet", and the case of "sheet" is called Also covers "film". In the present invention, when "X~Υ" (χ, Υ/^" a Υ is an arbitrary number), "Y, ,,, X is from above and below Y" unless otherwise stated. The meaning of "and the meaning of "is better than W is preferably less than γ". In addition, in the present invention, the case where the performance is "above" (X is an arbitrary number) is based on the premise that there is no special statement, and it is preferably "higher meaning, when the performance is "below" (the gamma is arbitrary). In the case of the number), the meaning of "better than Υ" is covered by the premise of the temple. [Examples] The following examples are given, but the present invention is not limited by these, and the physical property value measurement and evaluation methods of the examples and the comparative examples are as follows: (1) Ultrasonic weldability $ ° The film cutter of the shape shown in the example and the laminate obtained by the example and the comparative example was punched into a saw blade shape using a Thomson blade punching machine, and the figure was obtained (the blade height was 1 mm, the blade pitch was used. Electric*Electronic Jl Co., Ltd. Ultrasonic fusion splicer 45qb_fc, the 0.52 coated cardboard is placed on the mounting table with the coated side facing down and the non-coated side facing the ground, and then placed on it The film cutter (thickness 099124122 24 201114595 280/im) is placed on the jr side (coated cardboard side) according to the layer (II), and the 3 mm round-shaped welding head is lowered to the crimping from above. The amount becomes 〇2 faces and is constant, and then depends on the oscillation frequency of 19 kHz, the pressure 〇3 swims &amp;, and the fusion _0.2 seconds to 〇.5 seconds of the _, according to the Q" (four) sneakers. Crimp quantity film cutter thickness + board thickness) _ (the distance from the front end of the welding head to the mounting table) Good or bad for fusion, 纟23. In the 〇 environment, the film cutter and the coated cardboard were peeled off by hand to confirm. Then, the time required for the coated cardboard to be sufficiently welded to the film cutter side is rated as "◎" for those below 〇2 seconds, and "〇" for those from 0. 3 seconds to 0.4 seconds. For those who are more than 5 seconds, they are rated as "χ". (2) Interlayer adhesion In the above-described ultrasonic splicing test, when the film cutter and the paper were peeled off, it was visually confirmed whether or not peeling occurred between the layers (I) and the layers. Those who did not find the peeling between the layers were rated as "〇", and those who found the peeling were rated as "Γχ". (3) Cut-off property. The laminate obtained by the examples and the comparative examples was punched through a punching machine using a Thomson blade, and a film cutter of the shape shown in Fig. 1 was obtained. (blade height lmm, blade spacing imm). Then, 'the film cutter uses an ultrasonic fusion splicer, with a frequency of 19 kHz, a pressure of 〇3 MPa, a welding time of 0.3 seconds, and a welding head having a width of 099124122 25 201114595 3 mm and a length of 310 mm, which is fixed to the coating. The cloth was placed on a cardboard (thickness of 52 Å/zm), and the box was then placed, and a wrap film for food package I (made by Mitsubishi Resin Co., Ltd.: DIAWRAP EC0PITAT! Handy, made of polyolefin resin) was placed therein. The wrap film was attached at an angle of 45 degrees with respect to the film cutter, and the stress (width 4 cm) at the time of stretching at a speed of 1 OOO mm/min was measured. Further, the lower the stress system at this time, the better the cutting at the time of cutting, and the more excellent the performance as a film cutter. Those who have a stress at the time of cutting at 12 〇gf/4 〇cm or less are rated as "acceptable". (4) Cutting durability The cutting test of the above item was repeated, and the stress after repeating 1 time was measured. Those who have a stress of 120 gf/40 cm or less at this time are rated as "qualified". . (5) The density is determined at any three places in the width direction of the laminate obtained in the examples and the comparative examples, and a square sample having a length and a width of about 100_0±0.3 mm is cut out, and the sample is measured to a unit of O.OOlg by a precision balance scale. weight. Further, in any of the nine portions which were moderately dispersed in the 100 mm square sample, the thickness was measured to 0.001 mm unit', and the average thickness was determined. The volume (cm3) was calculated from the average thickness and area, and the weight of each sample divided by the quotient average of the respective volumes was regarded as the density, and was calculated to be 0.01 g/cm3. <Materials> Next, the materials used in the following examples and comparative examples will be described. 099124122 26 201114595 (lactic acid resin) (a)-1 : NW4032D manufactured by Nature Works Co., Ltd. (proportion of polylactic acid, poly D lactic acid = 1.5 mol%, ratio of poly L lactic acid = 98.5 mol%, weight average molecular weight 200,000 AHm=42J/g) (a)-2 : NW4042D manufactured by Nature Works Co., Ltd. (proportion of polylactic acid, poly D lactic acid = 4.3 mol%, ratio of poly L lactic acid = 95.7 mol%, weight average molecular weight: 20,000 , △Hn^TJ/g)

(a) -3 : NW4060D manufactured by Nature Works Co., Ltd. (proportion of polylactic acid, poly D lactic acid = 1〇.7 mol%, ratio of poly L lactic acid to 89.3 mol%, weight average molecular weight of 20,000, AHm = 〇J7g (Inorganic fine particles) (b) -l : SA-1 manufactured by Ping Chemical Co., Ltd. (anatase type titanium oxide, average particle diameter = 〇·15μηι, refractive index = 2 52) (b) -2 : iBen Chemical Company Β_55 (barium sulfate, average particle size = 〇.6, refractive index = 1.65) (ethylene copolymer) (c) _1: ACRYFT® WD201 manufactured by Sumitomo Chemical Co., Ltd. (Epoxy Methyl Methacrylate Copolymer, Ethyl decyl acrylate content = 10% by mass, Tm = l 〇 rc, AHm = 89 J / g) (c) · 2 · Sumitomo Chemical Co., Ltd. ACRYFT® WH206 (Ethyl phthalate acrylate copolymer, Ethyl mercapto acrylate content = 20 mass 0 / 〇, Tm = 89 ° C, △ Hn ^ OJ / g) 099124122 27 201114595 (c)-3: EVAFLEXEV360 manufactured by Mitsui DuPont Polymer Chemical Co., Ltd. (ethylene vinyl acetate copolymerization) , vinyl acetate content = 25% by mass, Tm = 80 ° C 'AHm = 62 J / g) (c) - 4: EVAFLEXEV170 manufactured by Mitsui DuPont Polymer Chemical Co., Ltd. (ethylene vinyl acetate copolymer, vinyl acetate) Quantity = 33% by mass, Tm = 52 ° C, AHm = 67 J / g) (c) - 5: evaflex EV4〇lx manufactured by Mitsui DuPont Polymer Chemical Co., Ltd. (ethylene/vinyl acetate copolymer, vinyl acetate content = 41% by mass, Tm=52〇C &gt; AHm=50J/g) Further, the crystal melting heat of the resin is fine and the crystal melting temperature Tm is a sample of the degree of l〇mg which is cut into a file (1) according to JIS K7121. use

Perkmelmer company Dsc_7 9nn〇r, y - 〇c / minute speed from 3 (rc heating to △H wonderful day hunting: in the obtained thermal analysis chart, read the crystal melting heat △Hm and, Ό日日解The measurement is carried out at a temperature Tm. In this case, for example, in the case of the lactic acid-based resin in which the composition of the lactic acid-based resin of the (8)-1 is mixed with the mass ratio of 〇9 to (a)-3, the crystallization of the lactic acid-based resin of the (8)-1 substance is melted. When mixing, the mixture (Example 1) and ΔΗιη were measured and recorded in the respective tables. Mixing (a)-l and (b)-l in the heart of the field + in the door + 匕 9〇: 10 The ratio is mixed, and the layer is extruded (2) at a distance of 040 mm to the biaxial R 2 2UTC, and at the same time (for example, 'the ratio of the double-layer multi-manifold type opening 20: 50:30, , (a) '3 and (4) · 1 depending on the mixing quality ° Use Ψ25ιηηι in the same direction, biaxial extrusion 099124122 28 201114595 Recognize the same extrusion line at 210 ° C extruded layer (II), then obtain a co-extruded sheet 'The thickness ratio of the layer (II) to the layer (II) is adjusted to 9:1, and the amount of molten resin discharged is adjusted. - Next, the co-extruded sheet is used for about 55. (: pouring roll After quenching, the unstretched sheet is obtained. The person-man, in the direction of the long side, performs a 25-fold roll extension according to the temperature of the 75 art, and extends to a width of 75 〇c in the width direction to reach a temperature of 75 〇c. (4), further In the heat treatment zone of the toweling machine, heat treatment is carried out according to the temperature of 14(), and the laminate is obtained. The thickness of the laminate is about 28 () (the layer (1) is 25_, the layer (9) is 30 (four), and the adjustment is made. From the extruder (4), the amount of resin discharged and the linear velocity were measured. The obtained laminate was evaluated for ultrasonic splicability, interlayer adhesion, cutting property, and cutting durability. The results are shown in Table 。. Example 2) Except that the layer (II) is a resin composition in which (4)], (8)_3, and (c)_2 are mixed according to a mixing mass ratio of 2〇: 50:30 to noisy, the rest is in accordance with the actual composition. In the same manner as in Example 1, the production of the laminate and various evaluations were carried out. The results are shown in Table 1. (Example 3) In addition to the layer (II), (a)-b(4)_3 and (4) were used, depending on the mixing quality. The same as the 2:50:30 ratio mixed tree test, the rest are the same as the real 099124122 201114595 The method was carried out to produce a laminate and various evaluations. The results are shown in Table 1. (Example 4) In addition to layer (II), (a)-l, (a)-3, and (c)-4 were used. The production of the laminate and various evaluations were carried out in the same manner as in Example 1 except that the resin composition was mixed at a mixing ratio of 20:50:30. The results are shown in Table 1. (Example 5) The layer (II) is a resin composition in which (a)-l, (a)-3, and (c)-5 are mixed according to a mixing mass ratio of 20:50:30, and the rest are in accordance with In the same manner as in Example 1, the production of the laminate and various evaluations were carried out. The results are shown in Table 1. (Example 6) In the layer (1), a resin composition in which (a)-l and (b)-2 were mixed at a mixing mass ratio of 90:10 was used, and the layer (II) was used in the same manner as in Example 2. The production of the laminate and various evaluations were carried out in the same manner as in Example 1 except for the resin composition. The results are shown in Table 1. (Example 7) The same procedure as in Example 1 was carried out except that the layer (I) was used alone (a)-l, and the layer (II) was the same resin composition as in Example 2. Production and evaluation of laminates. The results are shown in Table 2. (Example 8) 099124122 30 201114595 In addition to the layer (II), a resin composition in which (a)-2 and (c)-2 are mixed at a mixing mass ratio of 70:30 is used, and the rest is carried out in accordance with In the same manner as in Example 1, the production of the laminate and various evaluations were carried out. The results are shown in Table 2. (Example 9) In addition to the resin composition in which (a)-l, (a)-3, and (c)-2 were mixed at a mixing mass ratio of 40:30:30, the layer (II) was used. In the same manner as in Example 1, the production of the laminate and various evaluations were carried out. The results are shown in Table 2. (Example 10) In addition to the layer (I), a resin composition in which (a)-l, (a)-3, and (b)-l were mixed at a mixing mass ratio of 70:20:10 was used, and the layer was used. (II) The production of the laminate and various evaluations were carried out in the same manner as in Example 1 except that the same resin composition as in Example 2 was used. The results are shown in Table 2. (Example 11) In addition to the resin composition in which (a)-l, (a)-3, and (c)-2 were mixed according to a mixing mass ratio of 30:50:20, the layer (II) was used. In the same manner as in Example 1, the production of the laminate and various evaluations were carried out. The results are shown in Table 2. (Example 12) In addition to the resin composition in which (a)-l, (a)-3, and (c)-2 are mixed according to a mixing mass ratio of 30:25:45, the layer (II) is used. In the same manner as in Example 1, the production of the laminate and various evaluations were carried out. The results are shown in Table 2 of 099124122 31 201114595. (Example 13) The same procedure as in Example 1 was carried out except that the layer (II) was a resin composition in which (a)-3 and (c)-2 were mixed at a mixing mass ratio of 60:40. The method of making laminates and various evaluations. The results are shown in Table 2. (Comparative Example 1) The production of the laminate and various evaluations were carried out in the same manner as in Example 1 except that the layer (II) was used alone (a)-3. The results are shown in Table 3. However, since the ultrasonic welding time needs to be 0.5 second or longer, the evaluation of the cutting property and the cutting durability is omitted. (Comparative Example 2) An unstretched sheet having a thickness of 280 / rni (layer (I) of 250 μm and layer (II) of 30 μm) was produced in Example 1, and the same evaluation as in Example 1 was carried out. The results are shown in Table 3. (Comparative Example 3) In addition to the layer (I), a resin composition in which (8)-1, (a)-2, and (b)-l were mixed at a mixing mass ratio of 50:40:10 was used, and the layer (II) was used. The production of the laminate and various evaluations were carried out in the same manner as in Example 1 except that the same resin composition as in Example 2 was used. The results are shown in Table 3. (Comparative Example 4) The same procedure as in Example 1 except that the resin composition in which (a)-l and (c)-2 were mixed at a mixing mass ratio of 70:30 was used. 099124122 32 The method of 201114595, the production of laminates and various evaluations. The results are shown in Table 3. However, since the ultrasonic welding time needs to be 0.5 second or longer, the evaluation of the cutting property and the cutting durability are omitted. (Comparative Example 5) In addition to the resin composition in which (a)-l, (a)-3, and (c)-2 were mixed at a mixing mass ratio of 20:25:55, the layer (II) was used. In the same manner as in Example 1, the production of the laminate and various evaluations were carried out. The results are shown in Table 3. However, since the ultrasonic welding time needs to be 0.5 second or longer, the evaluation of the cutting property and the cutting durability is omitted. (Comparative Example 6) In addition to the layer (I), a resin composition in which (a)-l and (b)-l were mixed at a mixing mass ratio of 60:40 was used, and the layer (II) was used and examples. In the same manner as in Example 1, except that the same resin composition was used, the production of the laminate and various evaluations were carried out. The results are shown in Table 3. However, since the ultrasonic welding time needs to be 0.5 second or longer, the evaluation of the cutting property and the cutting-off property are omitted. 099124122 33 201114595 [Table i] Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Layer (0 layer (Π) layer 0) Layer (Π) Layer 1 Layer (Π) Layer 0) Layer ( Π) Layer 1 Layer (Π) Layer C0 Layer (Π) (8)-1 NW4032D 90 20 90 20 90 20 90 20 90 20 90 20 (8)-2 NW4042D (8)-3 NW4060D 50 50 50 50 50 50 (b)-l Oxidation Titanium 10 10 10 10 10 (b)-2 Barium sulfate 10 (c)-l WD201 30 (c)-2 WH206 30 30 (c)-3 EV360 30 (c)-4 EV170 30 (c)-5 EV40LX 30 AHni (J/g) of each layer of lactic acid resin 42 12 42 12 42 12 42 12 42 12 42 12 Interlayer adhesion 〇〇〇〇〇〇 Ultrasonic splicing (mm) 0.4 (0) 〇.3 (〇) 〇.2(@) 〇.2(@) 〇.2(@) 〇.3(〇) Cuttability (gfi^Ocm) 89 90 90 89 90 91 Cut and freeze (gfi^Ocm) 111 109 112 108 109 110 Density (g/cm3) 1.29 1.29 1.29 1.29 1.29 1.29 099124122 34 201114595 [Table 2]

35 099124122

201114595 [Table 3] 099124122 36 201114595 (Review) When comparing Examples 1 to 13 and Comparative Example 3, the lactic acid used in the layer (I) is known from the viewpoints of the cutting property and the cutting durability. Resin (A-1) : The crystal melting heat AHm is preferably 30 J/g or more. On the other hand, when comparing Examples 1 to 13 and Comparative Examples 1 and 3, the crystal melting of the lactic acid resin (A-2) used in the layer (II) was obtained from the viewpoint of ultrasonic weldability. The heat AHm is preferably OJ/g or more and 25 J/g or less. In addition, in the layer (II), when the content ratio of the ethylene-based copolymer (C) is 50 parts by mass or more, the interlayer adhesion property becomes the same as in the case of the first embodiment. When it is not preferable, the content ratio of the ethylene-based copolymer (C) is preferably 10 parts by mass or more and 50 parts by mass or less. Further, when Examples 1 to 13 are compared with Comparative Example 2, it is important to know that the laminate is extended in at least one direction from the viewpoint of the cutting property and the cutting durability. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a plan view of a film cutter manufactured by a cutting evaluation test. [Main component symbol description] , 1 film cutter 2 blade 099124122 37

Claims (1)

201114595 VII. Patent application scope: 1. A film cutter characterized in that it is a film cutter composed of a laminate body provided with a layer (II) on at least one side of the layer (I); (I) is a lactic acid-based resin (A-1) containing 70 parts by mass or more and 100 parts by mass or less of the crystal heat of fusion AHm of 30 J/g or more, and contains inorganic fine particles in a ratio of 0 parts by mass or more and 30 parts by mass or less. (B), the layer (II) contains a lactic acid-based resin (A-2) having a crystal heat of fusion AHm of not less than OJ/g and not more than 25 J/g in an amount of 51 parts by mass or more and 95 parts by mass or less, and contains 5 masses. The ethylene-based copolymer (C) in a ratio of 49 parts by mass or less or more; the layered body is extended at least in one direction. 2. The film cutter according to the first aspect of the invention, wherein the ethylene-based copolymer (C) has a crystal melting temperature Tm of 40 ° C or more and 90 ° C or less, and the crystal melting heat AHm is 1 J/g or more. , 100J / g or less. 3. The membrane cutter according to the first aspect of the invention, wherein the total content of the comonomer copolymerized with ethylene in the ethylene-based copolymer (C) is 10% by mass or more and 50% by mass or less. . 4. The membrane cutter according to the second aspect of the invention, wherein the total content of the comonomer copolymerized with ethylene in the ethylene-based copolymer (C) is 10% by mass or more and 50% by mass or less. . 5. The film-cutting device of the first aspect of the invention, wherein the ethylene-based copolymer (C) is an ethylene-vinyl acetate copolymer having a vinyl acetate content of 15% by mass or more and 45% by mass or less. 099124122 38 ^νηιΐ4595 6. The film (c) of the second application of the patent application is a vinyl acetate content of 15 denier, &quot;vinyl copolymerized ethylene/acetic acid. 7. % or more and 45% by mass or less 7. As in the patent application, item 7 7 &amp; t human film cutter, wherein ethylene copolymerization is Sa S textual ethylene content 15 Ethylene vinyl acetate I intended a copolymer. In the above, the mass% or less of the ethylene copolymerization, 45 mass% or less, 8. The film cutter of the fourth application of the patent scope, the substance (c) is a vinyl acetate content of 15% by mass or more. • Vinyl acetate g copolymer. 9. The film of the item i of the patent application, wherein the substance (6) is a methyl methacrylate methyl vinegar content of 1% by mass or more, and the amount; the following ethylene methyl methacrylate copolymer. 10. In the case of the film of the second paragraph of the patent application, the ethylene-based copolymer (C) is a methacrylic acid-methyl methacrylate containing 1% by volume or more and a mass% or less of methacrylic acid. Ester copolymer. [11] The film-cutting device of the third aspect of the invention, wherein the ethylene-based copolymer (C) is a methyl methacrylate containing 10% by mass or more and 3% by mass or less of methyl methacrylate. Ester copolymer. 12. The film cutter according to claim 4, wherein the ethylene-based copolymer (C) is an ethylene methyl group having a methyl methacrylate content of 10% by mass or more and 3 Å by mass or less. Methyl acrylate copolymer. 13. The film cutter according to any one of claims 1 to 12, wherein the inorganic fine particles (B) are refracted in 099124122 39 201114595. 4. If the scope of the patent is in the range of 】 to 12: Inorganic microparticles. In the resin composition constituting the layer (I), the film cutter of the =: is in a step of containing (4) (6) of the total amount of the above-mentioned, Π) parts by mass. K. The film cutter of claim 13, wherein the resin composition further comprises a vinyl copolymer (c) in a proportion of not more than G5 f and not more than 2 parts by weight. % 16. In the scope of the patent application range i to 12, the thickness of the layer (1) is (10) called the film cutter of the above, 400u-member, and its degree c(10)-lower. The thickness of the material is as follows: The thickness of the layer (11) is less than or equal to 働μΙΏ, and the thickness of the layer (11) is 3 handsome ΙΟΟμιη. the following. 18.18. For the postal code of Article 14 of the patent application, the towel is 1 upper, lower, and the layer (11): ΙΟΟμιη or less. κ from the top, 19, such as the application of paste 15th film cut _, where ^400μηι 3; j ^ ΙΟΟμιη below.卜上上, 2〇. For the film cutting of any of the items 1 to 12 of the patent application, ^__, U9gW or more, called (4) to ^ 21. 21. The film of claim 13 Cutter 099124122 ^ The density of the cut-off 40 201114595 is 1.19 g/cm3 or more and 1.51 g/cm3 or less. 22. The film cutter of claim 14, wherein the film cutter t has a density of 1.19 g/cm3 or more and 1.51 g/cm3 or less. The film cutter of claim 15, wherein the film cutter has a density of 1.19 g/cm3 or more and 1.5 lg/cm3 or less. 24. The film cutter of claim 16, wherein the film cutter has a density of 1.1 Qg/cnr' or more and 1.51 g/cm3 or less. 25. The film cutter of claim 17, wherein the film cutter has a density of 1.19 g/cm3 or more and 1.51 g/cm3 or less. 26. The film cutter of claim 18, wherein the film cutter has a density of 1.19 g/cm3 or more and 1.51 g/cm3 or less. 27. The film cutter of claim 19, wherein the film cutter has a density of 1.19 g/cm3 or more and 1.5 lg/cm3 or less. 28. A storage case with a film cutter, comprising a film cutter according to any one of claims 1 to 27, wherein the layer (II) is superposed on the paper surface of the storage case Configuration, and the implementation of ultrasonic fusion. 099124122 41