WO2014199819A1 - 塩化ビニル系食品包装用フィルム - Google Patents
塩化ビニル系食品包装用フィルム Download PDFInfo
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- WO2014199819A1 WO2014199819A1 PCT/JP2014/063942 JP2014063942W WO2014199819A1 WO 2014199819 A1 WO2014199819 A1 WO 2014199819A1 JP 2014063942 W JP2014063942 W JP 2014063942W WO 2014199819 A1 WO2014199819 A1 WO 2014199819A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/15—Heterocyclic compounds having oxygen in the ring
- C08K5/151—Heterocyclic compounds having oxygen in the ring having one oxygen atom in the ring
- C08K5/1515—Three-membered rings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2327/06—Homopolymers or copolymers of vinyl chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/11—Esters; Ether-esters of acyclic polycarboxylic acids
Definitions
- the present invention relates to a film excellent in low elution (safety), packaging suitability (flexibility), and film appearance.
- Stretch films with excellent transparency, flexibility, and heat sealability are widely used for food packaging, especially for fresh food packaging for meat, fresh fish, fruits and vegetables.
- a film made of a polyvinyl chloride resin composition in which an adipate ester plasticizer and various antifogging agents are blended with a polyvinyl chloride resin is generally used.
- Patent Document 1 an aliphatic polybasic acid polyester is added to a polyvinyl chloride resin.
- a vinyl chloride resin composition for food packaging using a plasticizer and a glycerin ester which is an edible plasticizer is disclosed.
- patent document 2 it is manufactured by hydrogen peroxide method with respect to 100 parts by mass of chlorine-containing resin such as polyvinyl chloride resin, has a peroxide value of 13 or less, and does not contain a specific phosphorus antioxidant.
- a food packaging material comprising 1 to 50 parts by mass of epoxidized soybean oil is disclosed.
- Patent Document 3 discloses that a specific adipic acid ester plasticizer is 15 to 45 parts by mass, an epoxidized vegetable oil is 1 to 30 parts by mass or less, and an average molecular weight is 1000 to 3000 with respect to 100 parts by mass of a polyvinyl chloride resin.
- a stretch film comprising 11 to 40 parts by mass of a polyester plasticizer and 0.1 to 1.0 parts by mass of a higher fatty acid having 8 to 22 carbon atoms is disclosed.
- Patent Document 4 discloses an aliphatic polybasic acid polyester plasticizer and an aliphatic polybasic ester plasticizer having a weight average molecular weight of 800 to 3,000 with respect to 100 parts by mass of a polyvinyl chloride resin. 17-21 parts by mass of a combination product (of which the ratio of aliphatic polybasic polyester plasticizer is 20-40% by mass), 3-9 parts by mass of epoxidized vegetable oil, and a glycerin ester compound as an antifogging agent Discloses a polyvinyl chloride resin composition containing 0.5 to 3.0 parts by mass.
- a plasticizer is added to a food packaging film mainly composed of polyvinyl chloride in order to increase flexibility, but among wrapping films, a wrap film for food packaging is particularly sophisticated. Since flexibility is required, for example, the amount of plasticizer added to the extent disclosed in Patent Document 4 may be insufficient. On the other hand, when the addition amount of the plasticizer is increased, the elution amount of the plasticizer is increased, and it is not easy to achieve both.
- polyester plasticizers having an average molecular weight of 1000 to 3000 are relatively easy to elute, so a practically sufficient level of elution (safety) is ensured. There are cases where it is not possible.
- epoxidized soybean oil as disclosed in Patent Document 2 is a plasticizer derived from natural products, and is particularly suitable for food packaging applications. In addition to being easy to do, it may cause poor appearance of the film during storage.
- JP-A-2-269145 Japanese Patent Laid-Open No. 8-27341 JP-A-9-176424 JP 2011-153210 A
- the present invention has been made in view of the above circumstances, and a solution to the problem is a vinyl chloride food packaging film that combines low elution (safety), packaging suitability (flexibility), and good film appearance. Is to provide.
- the gist of the present invention is a modified epoxidized vegetable oil (B) having a polymer content of 5 to 50% by mass relative to the vinyl chloride resin (A), and a weight average molecular weight of 200 to 1000.
- An aliphatic dibasic acid ester compound (C) having 10 or less carbon atoms and a polyester compound (D) having a weight average molecular weight of 3000 to 10,000 are blended, and (A) (B) with respect to 100 parts by mass
- the blending amount of the mixture of (C) is 30 to 50 parts by mass, and the ratio of (B) in the mixture of (B) and (C) is 30 to 70% by mass.
- the food packaging film is characterized in that the blending amount of (D) with respect to 100 parts by mass is 5 to 15 parts by mass.
- the vinyl chloride food packaging film of the present invention uses the modified epoxidized vegetable oil (B) as a plasticizer, and is used for isooctane measured by the evaporation residue test method (single-sided method) stipulated in Ministry of Health and Welfare Notification No. 20 in 1982.
- Aliphatic dibasic acid ester compound (C) having a carbon number of 10 or less and a modified epoxy having a weight average molecular weight of 200 to 1000 and not only having a very low elution amount but also excellent safety.
- the modified epoxidized vegetable oil (B) bleed out on the film surface is dissolved in the aliphatic dibasic acid ester compound (C) having 10 or less carbon atoms by mixing with the modified vegetable oil (B) at a specific ratio. Therefore, it is possible to produce a film for food packaging that does not cause whitening of the film surface even during storage at low temperature or high temperature and high humidity and has an excellent appearance. Can be, it can be widely used as a wrap film for food packaging.
- the vinyl chloride resin (A) used in the present invention a vinyl chloride resin having an arbitrary average degree of polymerization can be used.
- the average degree of polymerization of the vinyl chloride resin (A) is 800 to 1400. If the average degree of polymerization is 800 or more, sufficient mechanical strength can be obtained. On the other hand, if the average degree of polymerization is 1400 or less, heat generation due to an increase in melt viscosity does not occur, and coloring due to decomposition can be eliminated.
- the average degree of polymerization of the vinyl chloride resin (A) is more preferably 900 or more or 1350 or less in the above-mentioned range, and more preferably 1000 or more and 1300 or less. Is more preferable.
- vinyl chloride resin (A) in addition to a homopolymer of vinyl chloride (referred to as “vinyl chloride homopolymer”), a copolymer with a monomer copolymerizable with vinyl chloride (hereinafter, “ And a graft copolymer obtained by graft-copolymerizing vinyl chloride to a polymer other than this vinyl chloride copolymer (hereinafter referred to as vinyl chloride-based graft copolymer). Can do.
- the proportion of vinyl chloride in the vinyl chloride copolymer is 60 to 99. It is preferable that it is mass%.
- the vinyl chloride homopolymer and the vinyl chloride copolymer can be polymerized by an arbitrary method such as an emulsion polymerization method, a suspension polymerization method, a solution polymerization method, or a bulk polymerization method.
- the monomer copolymerizable with vinyl chloride may be any monomer having a reactive double bond in the molecule.
- ⁇ -olefins such as ethylene, propylene and butylene
- vinyl esters such as vinyl acetate and vinyl propionate
- vinyl ethers such as butyl vinyl ether and cetyl vinyl ether
- unsaturated carboxylic acids such as acrylic acid and methacrylic acid, methyl acrylate Esters of acrylic acid or methacrylic acid such as ethyl methacrylate and phenyl methacrylate, aromatic vinyls such as styrene and ⁇ -methylstyrene
- vinyl halides such as vinylidene chloride and vinyl fluoride
- N-phenylmaleimide N-substituted maleimides such as N-cyclohexylmaleimide
- these can be used alone or in combination of two or more.
- any polymer that can graft copolymerize vinyl chloride may be used.
- the modified epoxidized vegetable oil (B) used in the present invention is obtained by enlarging a part of the epoxidized vegetable oil.
- a reaction product of epoxidized vegetable oil and carboxylic acid or a peroxide value of 13.1 to An example is one in which 18.0 milliequivalents (mEq) / kg of epoxidized vegetable oil is increased in quantity during melt kneading.
- the epoxidized vegetable oil include epoxidized soybean oil, epoxidized linseed oil, epoxidized cottonseed oil, epoxidized peanut oil, epoxidized safflower oil, epoxidized grape seed oil, and epoxidized olive oil. These can be used alone or as a mixture of two or more. Among these, epoxidized soybean oil and epoxidized linseed oil are preferably used from the viewpoint of compatibility with a vinyl chloride resin.
- the proportion of the multimer of the epoxidized vegetable oil in the modified epoxidized vegetable oil (B) is 5 to 50% by mass (in this case, the proportion of the monomer is 95 to 50% by mass). There must be. If the ratio of the multimer is 5 to 50% by mass, it is possible to achieve both plasticization and low elution property of the vinyl chloride resin. If the proportion of the multimer is 50% by mass or less, plasticization of the vinyl chloride resin is sufficient and excellent flexibility can be obtained. On the other hand, if the proportion of the multimer is 5% by mass or more, the plasticity Elution of the modified epoxidized vegetable oil (B) added as an agent can be sufficiently suppressed.
- a multimer refers to a dimer or more.
- the range of the multimer in the modified epoxidized vegetable oil is 9% by mass or more (in this case, the monomer ratio is 91% by mass or less) or 40% by mass or less (in this case).
- the monomer ratio is preferably 60% by mass or more, and among them, 10% by mass or more (in this case, the monomer ratio is 90% by mass or less) or 35% by mass or less (in this case, simply More preferably, the proportion of the monomer is 65% by mass or more, and among them, 11% by mass or more (in this case, the proportion of the monomer is 89% by mass or less), or 30% by mass or less (in this case, More preferably, the ratio of the monomer is 70% by mass or more.
- the measurement of the polymer of the epoxidized vegetable oil is performed by epoxidized vegetable oil itself, a product obtained by reacting epoxidized vegetable oil and carboxylic acid, vinyl chloride resin (A), components (B), (C) described later, You may measure in any step of what melt-kneaded (D) and the additive, and what formed the film.
- a part of the epoxidized vegetable oil is obtained by reacting the epoxidized vegetable oil with a carboxylic acid.
- a method of polymerizing a method of increasing the amount of epoxidized vegetable oil having a peroxide value of 13.1 to 18.0 milliequivalents (mEq) / kg at the time of melt kneading can be employed.
- a method of reacting an epoxidized vegetable oil and a carboxylic acid a method in which a mixture of the epoxidized vegetable oil and the carboxylic acid is polymerized by heating at a temperature of 100 to 220 ° C. for about 10 minutes to 2 hours, for example.
- vinyl chloride resin (A), polyester compound (C), epoxidized vegetable oil, carboxylic acid and other additives are all mixed and reacted in a kneader such as a mixer or an extruder to multimerize. Any method may be used, such as
- the carboxylic acid can react with an epoxidized vegetable oil such as epoxidized soybean oil to polymerize the epoxidized vegetable oil, and preferably the proportion of the multimer in the modified epoxidized vegetable oil is as described above. If it can be 5-40 mass%, it will not specifically limit.
- carboxylic acids include formic acid, acetic acid, propionic acid, butyric acid, valeric acid, caproic acid, enanthic acid, caprylic acid, pelargonic acid, capric acid, lauric acid, myristic acid, palmitic acid, margaric acid, stearic acid, etc.
- the addition amount of the carboxylic acid is preferably 0.01 parts by mass or more and 8 parts by mass or less, and 0.05 parts by mass or more and 6 parts by mass or less with respect to 100 parts by mass of the epoxidized vegetable oil. It is more preferable that it is 0.1 parts by mass or more and 3 parts by mass or less.
- a more preferable range of the peroxide value is 13.3 to 17.5 mm.
- the equivalent range is 13.5 to 17.0 milliequivalent / kg.
- the peroxide value of the epoxidized vegetable oil is below this range, the peroxy group in the epoxidized vegetable oil is small, and it is difficult to achieve sufficient multimerization at the time of melt kneading with the polyvinyl chloride resin (A).
- the peroxide value exceeds this range, for example, the odor when formed into a film is severe and it may be difficult to use as a food packaging material.
- the peroxide value of the epoxidized vegetable oil (B) is determined based on the standard oil analysis method (2.5.2 Peroxide value, standard oil analysis test method (I), Japan Oil Chemists' Society established, 2003 edition, Nippon Oil Corporation. Based on the acetic acid / isooctane method of Chemical Society), it was determined from the number of milliequivalents of iodine (milliequivalent / kg) per 1 kg of epoxidized vegetable oil released when potassium iodide was added to the epoxidized vegetable oil (B).
- a modified epoxidized vegetable oil (B) bleeded out on the film surface by blending an aliphatic dibasic acid ester compound (C) having a weight average molecular weight of 200 to 1000 and having 10 or less carbon atoms Dissolves in the aliphatic dibasic acid ester compound (C), suppresses solidification during low-temperature storage and reaction with water during high-temperature and high-humidity storage, and provides a film for food packaging excellent in appearance be able to.
- the weight average molecular weight of the aliphatic dibasic acid ester (C) is 200 or more, excessive bleed of the aliphatic dibasic acid ester (C) does not occur, which is preferable for safety.
- the aliphatic dibasic acid ester (C) has a weight average molecular weight of 1000 or less, the modified epoxidized vegetable oil (B) bleed out on the film surface is dissolved, and a film having an excellent appearance can be obtained.
- the weight average molecular weight of the aliphatic dibasic acid ester (C) is preferably 300 to 800, more preferably 350 to 600.
- aliphatic dibasic acid ester compound (C) examples include dimethyl adipate (DMA), dibutyl adipate (DBA), diisobutyl adipate (DIBA), di-2-ethylhexyl adipate (DOA), Diisononyl adipate (DINA), diisodecyl adipate (DIDA), di-2-ethylhexyl azelate (DOZ), dimethyl sebacate (DMS), dibutyl sebacate (DBS), di-2-ethylhexyl sebacate (DOS), etc. Is mentioned.
- DMA dimethyl adipate
- DBA dibutyl adipate
- DIBA diisobutyl adipate
- DOA di-2-ethylhexyl adipate
- DINA Diisononyl adipate
- DIDA diisodecyl adipate
- DOS di-2
- the polyester compound (D) used in the present invention has a weight average molecular weight of 3000 to 10,000. If the weight average molecular weight of the said polyester-type compound (D) is 3000 or more, the elution of the said polyester-type compound (D) can be suppressed and it is preferable on safety. On the other hand, if the weight average molecular weight is 10,000 or less, the compatibility with the vinyl chloride resin is good, elution of the polyester compound can be suppressed, and a sufficient plasticizing effect can be obtained.
- a more preferable range of the weight average molecular weight of the polyester compound (D) is 4000 to 9000, and a more preferable range is 5000 to 8000 or less.
- polyester compound (D) examples include, for example, adipic acid ester compounds, sebacic acid ester compounds, succinic acid ester compounds, and polyester polyols.
- adipic acid ester compound in terms of compatibility with the vinyl chloride resin (A), it is preferable to use an adipic acid ester compound, a polyester polyol, or a mixture thereof.
- the adipic acid ester compound for example, a reaction product of adipic acid and a dihydric alcohol can be used.
- the dihydric alcohol is not particularly limited, and for example, ethylene glycol, propylene glycol, 1,3-butanediol, 1,4-butanediol, 1,6-hexanediol, and the like can be used alone or Any of two or more types of dihydric alcohols may be used.
- adipic acid ester compound examples include poly (propylene glycol / adipic acid) ester, poly (1,3-butanediol / adipic acid) ester, poly (1,4-butanediol / adipic acid), for example.
- Ester poly (ethylene glycol / adipic acid) ester, poly (1,6-hexanediol / butanediol / adipic acid) ester, poly (butanediol / ethylene glycol / adipic acid) ester, poly (ethylene glycol / propylene glycol) / Butanediol / adipic acid) ester.
- poly (1,3-butanediol / adipic acid) ester or poly (1,4-butanediol / adipic acid) is particularly preferred in terms of compatibility with vinyl chloride resin (A) and low elution. It is preferable to use an ester or a mixture thereof.
- polyester polyol examples include those obtained by polycondensation of an aliphatic dicarboxylic acid and / or an aromatic dicarboxylic acid and a dihydric alcohol.
- aliphatic dicarboxylic acid examples include succinic acid, adipic acid, sebacic acid, glutaric acid, and azelaic acid.
- aromatic dicarboxylic acid examples include isophthalic acid and terephthalic acid.
- dihydric alcohols examples include ethylene glycol, diethylene glycol, propylene glycol, 1,4-butanediol, 1,6-hexanediol, 3-methyl-1,5-pentadiol, neopentyl glycol, 1, 4-dihydroxymethylcyclohexane and the like can be mentioned.
- polyester polyol examples include, for example, polyethylene adipate diol, polybutylene adipate diol, pohexamethylene adipate diol, polyneopentyl adipate diol, polyethylene / butylene adipate diol, poly-3-methylpentane adipate diol, polybutylene isophthalate diol And so on.
- polyneopentyl adipate diol is preferably used in terms of compatibility with the vinyl chloride resin (A) and low elution.
- the blended amount of the modified epoxidized vegetable oil (B) and the aliphatic dibasic ester compound (C) with respect to 100 parts by mass of the vinyl chloride resin (A) is 30 to 50 parts by mass, and the modified epoxy
- the proportion of the modified epoxidized vegetable oil (B) in the mixture of the modified vegetable oil (B) and the aliphatic dibasic ester compound (C) is 30 to 70% by mass.
- the compounding amount of the polyester compound (D) with respect to 100 parts by mass of the vinyl chloride resin (A) is 5 to 15 parts by mass.
- the (B) and (C ) An optimum flexibility can be imparted to the wrap film. Moreover, if the ratio of the modified epoxidized vegetable oil (B) in the mixture of the modified epoxidized vegetable oil (B) and the aliphatic dibasic acid ester compound (C) is within the above range, a low temperature or a high temperature Even when stored for a long time under humidity, both flexibility and low elution can be achieved without causing poor film appearance.
- the blending amount of the modified epoxidized vegetable oil (B) and the aliphatic dibasic acid ester compound (C) with respect to 100 parts by mass of the vinyl chloride resin (A) is a ratio of 33 parts by mass or more, or 47 parts by mass or less. Among them, it is particularly preferable that the ratio is 36 parts by mass or more, or 42 parts by mass or less.
- the ratio of the modified epoxidized vegetable oil (B) in the mixture of the modified epoxidized vegetable oil (B) and the aliphatic dibasic acid ester compound (C) is 35% by mass or more, or 65% by mass or less. It is preferable that the ratio is 40% by mass or more, or 60% by mass or less.
- the blending amount of the polyester compound (D) with respect to 100 parts by mass of the vinyl chloride resin (A) is preferably 7 parts by mass or more, or 13 parts by mass or less, particularly 9 parts by mass. More preferably, the ratio is 11 parts by mass or less.
- modified epoxidized vegetable oil (B), the aliphatic dibasic acid ester compound (C), and the polyester compound (D) within such a range, low elution (safety) and packaging suitability (flexible) Property), film unwinding property, and film wrapping film excellent in film appearance.
- the Ca—Zn stabilizer is a mixture of calcium fatty acid salt and zinc fatty acid salt.
- fatty acids include behenic acid, stearic acid, lauric acid, oleic acid, palmitic acid, ricinoleic acid, benzoic acid and the like, and can be used in combination of two or more according to the purpose. It is preferable to use a stearate from the viewpoint of moldability.
- the ratio of calcium and zinc is preferably 1: 2 to 1: 3 by mass ratio. If the ratio of zinc is less than 2 relative to calcium, a redness peculiar to calcium salts will appear. On the other hand, if the ratio of zinc is greater than 3 relative to calcium, zinc chloride produced during molding will be vinyl chloride. It may become a decomposition catalyst for resin, and sudden blackening and decomposition called “zinc burn” may occur.
- the addition amount of the Ca—Zn-based stabilizer is preferably 0.1 to 2.0 parts by mass with respect to 100 parts by mass of the vinyl chloride resin (A), and is 0.3 or more or 1.8 It is more preferable that the amount is not more than part by mass.
- the addition amount of the Ca—Zn stabilizer is less than 0.1 parts by mass, the effect of imparting thermal stability may not be sufficient, while when the addition amount exceeds 2.0 parts by mass, “zinc It may cause sudden blackening and decomposition called “burning”.
- an ester compound of a polyhydric alcohol and a fatty acid examples include monoglycerin fatty acid ester, polyglycerin fatty acid ester, sorbitan fatty acid ester, and polyoxyethylene alkyl ether.
- the monoglycerin fatty acid ester is preferably a monoglycerin ester of a saturated or unsaturated fatty acid having 12 to 18 carbon atoms.
- Specific examples include monoglycerol laurate, monoglycerol myristate, monoglycerol palmitate, monoglycerol stearate, monoglycerol oleate, and monoglycerol linoleate.
- the polyglycerol fatty acid ester a polyglycerol ester of a saturated or unsaturated fatty acid having 12 to 18 carbon atoms is preferable.
- Specific examples include polyglycerol laurate, polyglycerol myristate, polyglycerol palmitate, polyglycerol stearate, polyglycerol oleate, and polyglycerol linoleate.
- the sorbitan fatty acid ester is preferably a saturated or unsaturated fatty acid sorbitan ester having 12 to 18 carbon atoms. Specific examples include sorbitan laurate, sorbitan myristate, sorbitan palmitate, sorbitan stearate, sorbitan oleate, sorbitan linoleate, and the like.
- the polyoxyethylene alkyl ether is preferably a saturated alcohol polyoxyethylene alkyl ether having 12 to 18 carbon atoms, and more preferably a polyoxyethylene alkyl ether having 3 to 7 moles of added ethylene oxide. . Specific examples include polyoxyethylene lauryl ether, polyoxyethylene myristyl ether, polyoxyethylene palmityl ether, and polyoxyethylene stearyl ether. These may be used alone or in combination of two or more.
- the addition amount of the polyhydric alcohol and fatty acid ester compound is preferably 0.1 to 5.0 parts by mass, more preferably 0.5 parts by mass or more, with respect to 100 parts by mass of the vinyl chloride resin (A). Or it is more preferable that it is 4.5 mass parts or less, and it is still more preferable especially that it is 1.0 mass part or more or 3.5 mass parts or less among them. If the amount of the ester compound added is 0.5 parts by mass or more, sufficient antifogging properties can be exhibited. For example, when a food container or the like is packaged and stored, water droplets are generated on the film, and the contents are confirmed. It is possible to eliminate the problem of not being able to. On the other hand, if it is 5.0 parts by mass or less, excessive bleeding out of the polyhydric alcohol and fatty acid ester compound to the surface of the molded product can be suppressed, and the packaging suitability can be satisfied.
- the present resin composition is heat stabilizer, antioxidant, ultraviolet absorber, light stabilizer, antibacterial / antifungal agent, antistatic agent, lubricant, pigment, Additives such as dyes can be blended.
- a known method can be used.
- vinyl chloride resin (A) modified epoxidized vegetable oil (B), aliphatic dibasic acid ester compound (C), polyester compound (D), and other additives
- V-type blender ribbon blender
- Mixing with a mixer such as a Henschel mixer, kneading it with a kneader such as an extruder, mixing roll, Banbury mixer, kneader, or combining and kneading the mixer and kneader
- a film can be manufactured by a T-die method or an inflation method.
- the film thus obtained has all of low elution (safety), packaging suitability (flexibility), and film appearance, it can be widely used as a food packaging film.
- film refers to a thin flat product that is extremely small compared to its length and width and whose maximum thickness is arbitrarily limited, and is usually supplied in the form of a roll (Japan) Industrial standard JISK6900), and in general, “sheet” refers to a product that is thin by definition in JIS and generally has a thickness that is small instead of length and width.
- sheet refers to a product that is thin by definition in JIS and generally has a thickness that is small instead of length and width.
- the film unwinding force is influenced by the amount and molecular weight of the plasticizer, or the type and amount of the antifogging agent, and particularly has a correlation with the blending amount of the low molecular weight plasticizer. If the blending amount is large, bleeding on the film surface increases and the unwinding force decreases.
- C [Aliphatic dibasic acid ester compound (C)]
- C) -1 Brand name of Shin Nippon Rika Co., Ltd. Sansosizer DINA (Diisononyl adipate, weight average molecular weight: 398)
- C) -2 Trade name TOTM (trimellitic acid tris (2-ethylhexyl), weight average molecular weight: 547), J-Plus Co., Ltd.
- Example 1 (A) -1 is 100 parts by mass, (B) -1 is 15 parts by mass, (C) -1 is 25 parts by mass, (D) -1 is 10 parts by mass, and (J) -1 is 1 part by mass.
- a 01 mm film was obtained. About the obtained film, the ratio of the multimer in modified
- Example 2 A film was produced in the same manner as in Example 1 except that (B) -1 was 20 parts by mass and (C) -1 was 20 parts by mass in Example 1. The results of the same evaluation as in Example 1 are shown in Table 1.
- Example 3 A film was produced in the same manner as in Example 1, except that (B) -1 was changed to 25 parts by mass and (C) -1 was changed to 15 parts by mass. The results of the same evaluation as in Example 1 are shown in Table 1.
- Example 4 A film was produced in the same manner as in Example 1, except that 20 parts by mass of (C) -1 and 15 parts by mass of (C) -1 were used. The results of the same evaluation as in Example 1 are shown in Table 1.
- Example 5 A film was produced in the same manner as in Example 1, except that (B) -1 was changed to 25 parts by mass and (C) -1 was changed to 20 parts by mass. The results of the same evaluation as in Example 1 are shown in Table 1.
- Example 6 In Example 2, a film was produced in the same manner as in Example 1 except that (B) -2 was used instead of (B) -1. The results of the same evaluation as in Example 1 are shown in Table 1.
- Example 7 A film was produced in the same manner as in Example 1 except that (D) -2 was used instead of (D) -1 in Example 2. The results of the same evaluation as in Example 1 are shown in Table 1.
- Example 8 A film was produced in the same manner as in Example 1, except that (C) -2 was used instead of (C) -1. The results of the same evaluation as in Example 1 are shown in Table 1.
- Example 9 In Example 2, a film was produced in the same manner as in Example 1 except that (D) -3 was used instead of (D) -1. The results of the same evaluation as in Example 1 are shown in Table 1.
- Example 10 In Example 2, except that (B) -3 was used instead of (B) -1, the proportion of the epoxidized vegetable oil multimer in the modified epoxidized vegetable oil (B) was changed to 7.8% by mass. Produced a film in the same manner as in Example 2. The results of the same evaluation as in Example 1 are shown in Table 1.
- Comparative Example 1 A film was produced in the same manner as in Example 1, except that 30 parts by mass of (B) -1 and 10 parts by mass of (C) -1 were used. The results of the same evaluation as in Example 1 are shown in Table 1.
- Comparative Example 2 A film was produced in the same manner as in Example 1, except that 10 parts by mass of (B) -1 and 30 parts by mass of (C) -1 were used. The results of the same evaluation as in Example 1 are shown in Table 1.
- Comparative Example 3 A film was produced in the same manner as in Example 1 except that (B) -1 was changed to 10 parts by mass and (C) -1 was changed to 15 parts by mass. The results of the same evaluation as in Example 1 are shown in Table 1.
- Comparative Example 4 A film was produced in the same manner as in Example 1, except that (B) -1 was 15 parts by mass, (C) -1 was 15 parts by mass, and (D) -1 was 20 parts by mass. .
- the results of the same evaluation as in Example 1 are shown in Table 1.
- Comparative Example 5 Without blending the polyester compound (D), 100 parts by weight of (A) -1, 40 parts by weight of (B) -1, 10 parts by weight of (C) -1 and 1 part by weight of (J) -1 The mixture was put into a supermixer at a ratio of part, heated to a material temperature of 130 ° C. while stirring, mixed by heating, and then taken out when the material temperature was cooled to 60 ° C. to obtain a resin composition. Using the obtained resin composition, a film was produced and evaluated in the same manner as in Example 1. The results are shown in Table 1.
- Example 6 In Example 2, 1.2 parts by mass of succinic acid (J) -2 was further added as a dicarboxylic acid, and a film was produced in the same manner as in Example 1. However, in the modified epoxidized vegetable oil contained in the film, Since the ratio of the multimer was excessive (58% by mass), the dispersion state of the modified epoxidized vegetable oil was poor, and a film having a good appearance could not be obtained. Therefore, the same evaluation as in Example 1 could not be performed.
- J succinic acid
- Comparative Example 7 A film was produced in the same manner as in Example 1 except that (D) -4 was used instead of (D) -1 in Example 2. The results of the same evaluation as in Example 1 are shown in Table 1.
- Comparative Example 8 A film was produced in the same manner as in Example 1 except that (D) -5 was used instead of (D) -1 in Example 2. However, since the polyester compound bleeded out on the film surface and a film with good appearance could not be obtained, the same evaluation as in Example 1 could not be performed.
- the film of the present invention can be suitably used as, for example, a food packaging film.
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Abstract
Description
多量体の割合(質量%)=100(質量%)-「単量体の割合(質量%)」
ゲルパーミエーションクロマトグラフィー(カラム:東ソー(株)の商品名TSKgelG2000HXL)を用いて、溶媒としてTHF(溶液濃度2.5mg/mL、溶液注入量0.05mL、流速1mL/分、温度40℃)を使用して測定を行った。得られたチャートより、エポキシ化植物油の単量体の割合を算出し、以下の式にて多量体の割合を求めた。
多量体の割合(質量%)=100(質量%)-「単量体の割合(質量%)」
厚生省告示20号に定める蒸発残留物試験法(片面法)に基づき、溶媒としてイソオクタンを用い、溶媒との接触面積:25cm2、溶媒量:2mL/cm2、試験温度:25℃、試験時間:30分の条件で、イソオクタンに対する溶出量を測定し、該溶出量を表1に示した。溶出量が120ppm以下であれば、「合格」と評価することができる。
動的粘弾性測定機(アイティ計測(株)製、商品名:粘弾性スペクトロメーターDVA-200)を用いて、振動周波数:10Hz、昇温速度:3℃/分、歪0.1%の条件で、貯蔵弾性率(E’)を-100℃から200℃まで測定し、得られたデータから25℃における貯蔵弾性率(E’)を読み取り、その値を表1に示した。25℃における貯蔵弾性率(E’)が100MPa~500MPaであれば「合格」と評価できる。
外径85mm、長さ330mmの円筒形の紙管に実施例・比較例で作製した幅50mmのフィルムを10m巻付けた後、フィルム巻物が滑らかに回転するように、該紙管内に外径25mmの塩化ビニル樹脂製のパイプを挿入した。次に、フィルムを均一に巻き出せるようにフィルム先端をクリップで担持しながら、3cm/秒の速度でフィルムを巻きだした際にかかる荷重を、フォースゲージを用いて測定した。この時の巻き出し力が0.1~0.5N/50mmであれば「合格」と評価できる。
因みに、フィルム巻き出し力は、可塑剤の添加量や分子量、あるいは、防曇剤の種類や添加量が影響しており、特に低分子量可塑剤の配合量と相関があり、低分子量可塑剤の配合量が多いとフィルム表面へのブリードが多くなり、巻き出し力が下がる。
実施例・比較例で作製したフィルムを長さ50mm×幅50mmに裁断し、得られた評価用サンプルを、0℃、15%RHの低温・低湿雰囲気下、及び、40℃、80%RHの高温・高湿雰囲気下にそれぞれ7日間静置し、試験後にサンプル表面を観察する。そして、両条件においても変化しなかったもの(白化しなかったもの)を「A」、何れかの条件で白化したものを「B」と評価して表1に示した。
(A)-1:ポリ塩化ビニル(塩化ビニルの単独重合体、平均重合度1050)
(B)-1:過酸化物価が13.3であるエポキシ化大豆油
(B)-2:過酸化物価が15.1であるエポキシ化大豆油
(B)-3:過酸化物価が10.1であるエポキシ化大豆油
(C)-1:新日本理化(株)の商品名サンソサイザーDINA(アジピン酸ジイソノニル、重量平均分子量:398)
(C)-2:(株)ジェイプラスの商品名TOTM(トリメリット酸トリス(2-エチルヘキシル)、重量平均分子量:547)
(D)-1:ポリ(1,3-ブタンジオール/アジピン酸)エステル(重量平均分子量:6,000)
(D)-2:DIC(株)の商品名ポリライトOD-X-2044(ポリネオペンチルアジペートジオール、重量平均分子量:6,800)
(D)-3:豊国製油(株)の商品名HS2P-103S(ポリプロピレンセバケートジオール、重量平均分子量:4,900)
(D)-4:(株)ジェイプラスの商品名D620(アジピン酸ジオクチル/アジピン酸ジイソノニル、重量平均分子量:2,800)
(D)-5:三洋化成工業(株)の商品名サンエスター24625Y(ポリ(エチレン/ブチレン)アジペートジオール、重量平均分子量:11,300)
(J)-1:旭電化工業(株)の商品名アデカスタブSP-76(Ca-Zn系安定剤)
(J)-2:コハク酸
(A)-1を100質量部、(B)-1を15質量部、(C)-1を25質量部、(D)-1を10質量部、(J)-1を1質量部の割合でスーパーミキサーに投入した後、攪拌しながら材料温度を常温から130℃まで昇温し、加熱混合した後、70℃まで冷却した時点で取り出して樹脂組成物を得た。
得られた樹脂組成物を、Tダイ(幅350mm、ギャップ0.4mm)を装着したΦ40mm単軸押出機(L/D=20)にて、樹脂温度200℃で押出成形して、厚み0.01mmのフィルムを得た。得られたフィルムについて変性エポキシ化植物油中の多量体の割合、溶出性、柔軟性、フィルム巻き出し性、及び、フィルム外観変化の評価を行った。
結果を表1に示す。
実施例1において、(B)-1を20質量部、(C)-1を20質量部とした以外は実施例1と同様の方法でフィルムを作製した。実施例1と同様の評価を行った結果を表1に示す。
実施例1において、(B)-1を25質量部、(C)-1を15質量部とした以外は実施例1と同様の方法でフィルムを作製した。実施例1と同様の評価を行った結果を表1に示す。
実施例1において、(C)-1を20質量部、(C)-1を15質量部とした以外は実施例1と同様の方法でフィルムを作製した。実施例1と同様の評価を行った結果を表1に示す。
実施例1において、(B)-1を25質量部、(C)-1を20質量部とした以外は実施例1と同様の方法でフィルムを作製した。実施例1と同様の評価を行った結果を表1に示す。
実施例2において、(B)-1の代わりに(B)-2を用いた以外は実施例1と同様の方法でフィルムを作製した。実施例1と同様の評価を行った結果を表1に示す。
実施例2において、(D)-1の代わりに(D)-2を用いた以外は実施例1と同様の方法でフィルムを作製した。実施例1と同様の評価を行った結果を表1に示す。
実施例2において、(C)-1の代わりに(C)-2を用いた以外は実施例1と同様の方法でフィルムを作製した。実施例1と同様の評価を行った結果を表1に示す。
実施例2において、(D)-1の代わりに(D)-3を用いた以外は実施例1と同様の方法でフィルムを作製した。実施例1と同様の評価を行った結果を表1に示す。
実施例2において、(B)-1の代わりに(B)-3を用いることにより変性エポキシ化植物油(B)中に占めるエポキシ化植物油の多量体の割合を7.8質量%に変更した以外は実施例2と同様の方法でフィルムを作製した。実施例1と同様の評価を行った結果を表1に示す。
実施例1において、(B)-1を30質量部、(C)-1を10質量部とした以外は実施例1と同様の方法でフィルムを作製した。実施例1と同様の評価を行った結果を表1に示す。
実施例1において、(B)-1を10質量部、(C)-1を30質量部とした以外は実施例1と同様の方法でフィルムを作製した。実施例1と同様の評価を行った結果を表1に示す。
実施例1において、(B)-1を10質量部、(C)-1を15質量部とした以外は実施例1と同様の方法でフィルムを作製した。実施例1と同様の評価を行った結果を表1に示す。
実施例1において、(B)-1を15質量部、(C)-1を15質量部、(D)-1を20質量部とした以外は実施例1と同様の方法でフィルムを作製した。実施例1と同様の評価を行った結果を表1に示す。
ポリエステル系化合物(D)を配合せずに、(A)-1を100質量部、(B)-1を40質量部、(C)-1を10質量部、(J)-1を1質量部の割合でスーパーミキサーに投入し、攪拌しながら材料温度130℃まで昇温し、加熱混合した後、材料温度を60℃まで冷却した時点で取り出して樹脂組成物を得た。
得られた樹脂組成物を用いて、実施例1と同様の方法でフィルムの作製、評価を行った。結果を表1に示す。
実施例2において、更にジカルボン酸としてコハク酸(J)-2を1.2質量部添加し、実施例1と同様の方法でフィルムを作製したが、フィルム中に含まれる変性エポキシ化植物油中の多量体の割合が過剰(58質量%)となったため、変性エポキシ化植物油の分散状態が悪く、外観良好なフィルムが得られなかったため、実施例1と同様の評価を行うことができなかった。
実施例2において(D)-1の代わりに(D)-4を用いた以外は実施例1と同様の方法でフィルムを作製した。実施例1と同様の評価を行った結果を表1に示す。
実施例2において(D)-1の代わりに(D)-5を用いた以外は実施例1と同様の方法でフィルムを作製した。しかしながら、フィルム表面にポリエステル化合物がブリードアウトし、外観良好なフィルムが得られなかったため、実施例1と同様の評価を行うことができなかった。
Claims (5)
- 塩化ビニル系樹脂(A)に対して、多量体の含有割合が5~50質量%である変性エポキシ化植物油(B)、重量平均分子量が200~1000である、炭素数が10以下の脂肪族二塩基酸エステル系化合物(C)、および、重量平均分子量が3000~10000のポリエステル系化合物(D)を配合してなり、(A)100質量部に対する(B)および(C)の混合物の配合量が30~50質量部であり、かつ、(B)および(C)の混合物中に占める(B)の割合が30~70質量%であり、また、(A)100質量部に対する(D)の配合量が5~15質量部であることを特徴とする食品包装用フィルム。
- 炭素数が10以下の脂肪族二塩基酸エステル系化合物(C)が、ジイソノニルアジペートである請求項1に記載の食品包装用フィルム。
- ポリエステル系化合物(D)が、アジピン酸系エステル化合物、ポリエステルポリオール、または、アジピン酸エステル化合物とポリエステルポリオールの混合物である請求項1又は2に記載の食品包装用フィルム。
- アジピン酸エステル系化合物が、ポリ(1,3-ブタンジオール/アジピン酸)エステル、ポリ(1,4-ブタンジオール/アジピン酸)エステル、または、これらの混合物である請求項3に記載の食品包装用フィルム。
- ポリエステル系化合物(D)の重量平均分子量が、4000~9000である請求項4に記載の食品包装用フィルム。
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KR1020157025927A KR102148780B1 (ko) | 2013-06-12 | 2014-05-27 | 염화비닐계 식품포장용 필름 |
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Also Published As
Publication number | Publication date |
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EP3009373B1 (en) | 2017-11-29 |
KR102148780B1 (ko) | 2020-08-27 |
KR20160018454A (ko) | 2016-02-17 |
EP3009373A1 (en) | 2016-04-20 |
JP2015017242A (ja) | 2015-01-29 |
CN105263816A (zh) | 2016-01-20 |
EP3009373A4 (en) | 2016-11-02 |
JP6326974B2 (ja) | 2018-05-23 |
US20160108195A1 (en) | 2016-04-21 |
CN105263816B (zh) | 2018-04-03 |
US9714329B2 (en) | 2017-07-25 |
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