WO1992015455A1 - Biaxially oriented polyamide laminate film - Google Patents
Biaxially oriented polyamide laminate film Download PDFInfo
- Publication number
- WO1992015455A1 WO1992015455A1 PCT/JP1992/000211 JP9200211W WO9215455A1 WO 1992015455 A1 WO1992015455 A1 WO 1992015455A1 JP 9200211 W JP9200211 W JP 9200211W WO 9215455 A1 WO9215455 A1 WO 9215455A1
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- WIPO (PCT)
- Prior art keywords
- polymer
- film
- layer
- weight
- polyamide
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/023—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets using multilayered plates or sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0088—Blends of polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/514—Oriented
- B32B2307/518—Oriented bi-axially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
- B32B2309/08—Dimensions, e.g. volume
- B32B2309/10—Dimensions, e.g. volume linear, e.g. length, distance, width
- B32B2309/105—Thickness
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/582—Recycling of unreacted starting or intermediate materials
Definitions
- the present invention is excellent in oxygen gas barrier properties, bending resistance, toughness, etc., and is intended for packaging of foods, medical products, chemicals, etc., which are resistant to deterioration of contents due to oxygen.
- the unstretched film or Nobunaka finolem of a polyamid-based heavy body is used alone or laminated with other finolems to obtain various types.
- the finolem with the two vinylidene chloride heavy frame optics coated becomes dull when treated with hot water. It also has the disadvantage of containing chlorine during incineration. Compounds were generated and caused environmental pollution. On the other hand, as a film with good oxygen barrier properties, m
- No. 2 is based on ⁇ aliphatic dicanoleic acid and an aromatic polyamide polymer whose main component is a polyamide structural unit. Proposed. This film excels in transparency and oil resistance, but its use was limited due to its poor bending resistance.
- the aromatic polyamide layup is divided. If the number of layers is increased, the bending resistance of the laminated film is reduced. Also, if the proportion of the aliphatic polyamide polymer is increased to improve the bending resistance and toughness, the entire laminated film becomes thicker. In addition, it cannot be used, and both oxygen gas barrier property and bending resistance are not satisfactory and not satisfactory.
- non-standard films may be produced by the time a steady state is reached where products within specifications can be obtained. Even after the steady state has been reached, cut pieces called ear trims can be formed. Since these non-standard films and ear trims are mixtures of different polyamide polymers, they are separately separated and collected and used as a raw material for virgin materials. It is virtually impossible to do so, and discarding them as scrap reduces the yield of raw materials and increases the cost of products There is a problem.
- the above publications contain information on reusing such non-standard films, ear trims, etc., as well as measures to reduce the physical properties when reused. Have not been disclosed at all.
- the present invention provides a biaxially stretched polyamide ridge layer film having excellent oxygen gas barrier properties, excellent bending resistance, and high toughness.
- polyamide-based laminated biaxially stretched films that have been discarded as scraps.
- the mixture of raw materials such as non-standard film, ear trim, etc.
- the purpose of the present invention is to provide a laminated biaxially stretched film that can be effectively utilized and reuse of these materials does not cause deterioration in physical properties.
- the second target is to use the following polymer (A), polymer (B), mixed product (C), and polymer (P) as raw materials, and to use polymer (P) in a range of 0.3 to 5%. 5% by weight or less of the (a) layer composed of the polymer (A), the (b) layer composed of the heavy body (B), and the heavy body (P) containing 5% by weight. (C) containing at least two of the three types of layers (c), and not being composed of three or more layers.
- the main part of the polyamide-based biaxially stretched film according to the present invention The essential raw materials are two types of polyamide-based polymers (hereinafter referred to as “ ⁇ ⁇ -isomer (A)” and “polymer (B),” respectively) and polyrefres- sions.
- the polymer ( ⁇ ), which is one of the polyamide-based polymers, is composed of m- and / or p-xylylenediamine and a group having a carbon number of ⁇ 12.
- ⁇ Aliphatic dicarboxylic acid and a polymer comprising at least 70 mol% of the i-position of the resulting polyamide in the molecular chain.
- polymer (A) examples include polymethyl sulfide, polyamide, pyridine, polyamide, and polymethacrylate. Silylazemipo. Homopolymers such as laxilylene razamide, polyparaxylylene decanamide, and metaxylenparaxylazine Pamide copolymer, metaxylene ren / paraxylene len imide copolymer, metaxylene ren Z paraxylylene zera Copolymers, such as mexylylene Z and laxylylene sepakamide copolymers, can be mentioned.
- Homopolymers such as laxilylene razamide, polyparaxylylene decanamide, and metaxylenparaxylazine Pamide copolymer, metaxylene ren / paraxylene len imide copolymer, metaxylene ren Z paraxylylene zera Copolymers, such as mexylylene Z and laxyly
- boride components include a diamine component and a diamine component.
- the carboxylic acid component and other components are listed.
- Specific examples of the diamin component include hexamethylene dimamine, two and four trimethinole hexamethylene dimamine, and other fatty acids per month.
- Heterocycles or heteroatoms such as diamin, pyrazine bispropinoleamine, neopentinole glycol bispropinoleamine
- dicarboxylic acid components include aliphatic acids such as adipic acid, azelayic acid, and sebacic acid.
- Other components include lactams such as the ⁇ -force program, ⁇ -amino force Do you Yo of Bonn acid, ⁇ - ⁇ Mi Roh force Lumpur Bonn acid, and the like there Ru.
- the superstructure (A) may contain up to 20% by weight of a polymer (.D) compatible therewith.
- a polymer (.D) compatible therewith examples include a polyamide polymer and other thermoplastic resins not exemplified above.
- the ⁇ ⁇ body (A) is composed of m- or / and p-xylylenediamine and C6-C12: ⁇ , ⁇ aliphatic dicarboxylic acid. 70 moles of such polyamido structural units in the molecular chain? Must contain 0 or more. If the content is less than 70 mol / l, the target value of the oxygen permeability to be applied to the finally obtained laminated biaxially stretched film (temperature 2 15 cc / m 2 ⁇ 24 H ⁇ atm or less under the condition of 5 ° C and relative humidity of 65%), which is not preferable. Also, even when the amount of the polymer polymer cases in (A) of Ru is contained in the polymer (D) (D) was e Yue 2 0 weight 1? ⁇ , in the same reason, I don't like it.
- the polymer (B), which is another kind of the polyamide polymer, is an aliphatic polyamide polymer.
- the polymer ( ⁇ ) may be a chain-like polyamid having an amide bond, and as a specific example, the polymer A single polymer of polyhexamethylene azino. Mido and ⁇ -force product or hexamethylene adipamide as a main component and a compound copolymerizable with this compound 2 to 10 mol % Copolymers, and so on.
- Compounds that can co-polymerize with £ -force or hexamethylene amides include aliphatic diamins and fatty acids. Nitrate salts with aliphatic dicarboxylic acids, etc. Specific examples of the aliphatic diamines include ethylenediamine and tetrame. Tile methylene, pen methylene mamine, hexamethylene mamine, octa methylene mamine, deca methylene Examples of aliphatic dicarboxylic acids include adipic acid, cenosuccinic acid, cholic acid, and gluta.
- Nylon 16 or Nylon 66 which are homopolymers of the £ -force protein Hexamethylene adipamide is preferred because it can be obtained at low cost and can perform the biaxial stretching operation smoothly.
- the mixed object (C) is a mixture of the polymer (A) and the polymer (B), but may be a mixture of versions of each other. Then, a non-standard film generated when manufacturing the ridge layer film, or a scrap mixture such as a cut off material (ear trim) at the end of the film side. It can be anything, or it can be a scrap mix with a version added.
- the mixing ratio of these two polymers is not particularly limited, but it is preferable to select the polymer (A) and the base (B) in a weight ratio of 7: 3 to 1: 1: It is suitable.
- Both the heavy body (A), the heavy body B) and the mixed body C) have a large hygroscopic property, and if a material that has absorbed moisture is used, the raw material can be melted and extruded. In addition, since water vapor and oligomers are generated and inhibit film formation, it is preferable to dry in advance to reduce the water content to 0.1% by weight or less.
- polymers (A), polymers (B) and mixtures tC) include lubricants, antioxidants, antioxidants, antiblocking agents, stabilizers, dyes, Various additives such as pigments and inorganic fine particles can be added within a range that does not affect the properties of the film.
- the polymer (P) is a polymer obtained by converting a modified polyolefin (P) and a polyolefin (P2) into modified polyolefins 100 to 5 % By weight, and 0 to 95% by weight of the polyolefins, and less than 5% by weight of the modified polyolefins ( ⁇ 1). This is not preferable because the effect of uniformly dispersing the heavy body ( ⁇ ) in the polyamide-based polymer becomes poor.
- the modified polyolefins (P1) refer to those obtained by subjecting unsaturated carboxylic acids to graphitic polymerization of polyolefins as the main skeleton.
- Specific examples of polyolefins and polyolefins ( ⁇ 2) that serve as the main skeleton include oligomers such as ethylene and propylene.
- fin-type kaguri mono- and co-polymers for example, high-density polyethylene, low-density polyethylene, linear low-molecular Density Polyethylene, Ethylene-vinyl acetate copolymer, Ethylene-Propylene copolymer, Ethylene-butene copolymer, Polypropylene Propylene, etc. are listed.
- unsaturated carboxylic acids include acrylnolic acid, methacrylic acid, maleic acid, fumaric acid, itaconic acid and citraconic acid.
- Acids such as acid oleic anhydrides such as maleic anhydride, maleic anhydride, citraconic anhydride, and itaconic anhydride; or potassium and maleic anhydrides Acid gold such as potassium oleate!
- the salt is raised.
- These unsaturated carboxylic acids may be used alone or in combination of two or more.
- the modified polyolefins ( ⁇ 1) are prepared by dissolving a known production method, for example, a polyolefin and an unsaturated carboxylic acid. A method in which the reaction is performed in a molten state (for example, see Japanese Patent Publication No. 43-27421), and a method in which the reaction is performed in a solution state (for example, Japanese Patent Publication No.
- the content of unsaturated phenolic acids occupying in the modified polyolefins (P1) should be in the range of 0.01 to 5% by weight. Particularly preferred is a range of 0.1 to 3% by weight.
- the content of unsaturated carboxylic acids is 0.01% by weight. If the amount is less than the above, it cannot be mixed homogeneously with the polyamide polymer, and the obtained film becomes a hedge, while if it exceeds 5% by weight, the production becomes worse. Not only does the cost increase, but the effect of improving the bending resistance of the obtained film saturates, so that it is occupied by the modified polyolefins (P1). It is not necessary that the content of unsaturated carboxylic acids exceeds 5% by weight.
- Polyolefins which are the main skeletons of the modified polyolefins ( ⁇ 1) in the body ( ⁇ ), are the same as the polyolefins C ⁇ 2 It need not be the same. Further, in order to uniformly disperse the polymer ( ⁇ ) in the polyamide-based polymer, it is necessary to use a modified polyolefin (P 1) with some force. It is desirable to knead the polyolefins (2) and make them into a beret, but if the dispersibility does not change, this is limited. 1 None shall be done.
- the polyamide-based laminated biaxially stretched film according to the wood invention comprises (a) a layer polymer B) in which a polymer (P) is contained in a polymer CA). (B) layer, the mixture (C) containing the polymer P) in the mixture (C)
- the layer (c) is composed of at least two types of layers, and is in the range of 3 to 5 layers. It is better to select. Specific examples of the combination of layers and the number of layers are as follows.
- cur property means that the film is cut to a certain size and left on a flat surface.
- the following is required: (c) (a) It is also desirable to consider the layer structure and layer thickness such as Z (c), (c) / (b) / a) / (b) / (c).
- the content ratio of the superstructure (P) contained in the a) layer is the same as that of the (a) layer. Of the total weight of all ⁇ . 3 to 5 weight? '. If it is less than 0.3% by weight, the effect of improving the bending resistance of the obtained film is not obtained, while 5% by weight. Beyond the above, the obtained film becomes heavily unfavorable. Particularly preferred in the above range is 0.5 to 4% by weight.
- the polymer (P) is contained in the ear trim or the like.
- the content of the polymer (P) contained in the layer (c) is 5% by weight or less based on the total weight of all the polymers contained in the layer (c), and is 5% by weight or less. If it exceeds%, the obtained film becomes unfavorable because it becomes a haze. Particularly preferred in the above range is 0.1 to 3% by weight. ,
- the pellets of each polymer are uniformly driven.
- the extruder can be used to melt the drive-blend and extrude it into pellets.
- the polyamide-based laminated biaxially stretched film according to the present invention can be manufactured by a known method. First, the raw material consisting of the polymer (A) containing the polymer (B) and the polymer P) and the compound (C) containing the polymer (P) is more substantial. Non-oriented, non-oriented film Build.
- This unrolled intermediate laminated film does not require an adhesive to bond single films together, and is co-extruded to provide a laminated film with excellent performance. It is better to manufacture according to the law.
- the above raw materials are melted by at least two extruders, extruded from a flat die or an annular die, and then extruded. Sudden? By doing so, it becomes a flat or annular unstretched multilayer film.
- the above unstretched employment film is divided into 2.5 to 5 times each in the direction of the film flow (vertical axis) and in the direction perpendicular to it (horizontal axis). Stretch.
- the biaxial stretching method may be a conventional biaxial stretching with a tenter system, a simultaneous biaxial stretching with a tenter system, a simultaneous double stretching with a tuber, or the like, as long as it does not exceed the gist of the present invention.
- a known stretching method can be employed.
- the unstretched 5-layer film is heated to a temperature range of 50 to 110 ° C, and the roll-type longitudinal stretching is performed.
- the film is stretched 2.5 to 5 times in the vertical direction by the intermediate machine, and then in the transverse direction within the temperature range of 60 to 12 U by the tenth set horizontal stretching machine. It can be manufactured by stretching 2.5 to 5 times.
- the center type In the case of the simultaneous biaxial stretching method or the simultaneous biaxial stretching method of the Tubuler method, for example, in the temperature range of 60 to 110 ° C, each of the vertical and horizontal directions simultaneously It can be manufactured by stretching the film 2.5 to 5 times.
- the film stretched by the above method is then subjected to a heat treatment.
- a heat treatment temperature is
- the laminated biaxially stretched film which has been sufficiently heat-set by the heat treatment, is cooled by a conventional method and wound into a roll.
- the polyamide-based laminated biaxially stretched film according to the present invention has an oxygen permeability of 1 cc / m 2 ⁇ 24 H ⁇ ⁇ under the conditions of a temperature of 25 ° C. and a relative humidity of 653 ⁇ 4. Less than atm, force, flexure resistance of temperature 23 and relative humidity of 50% after 3 000 flexures with a Gelbo Flex Tester Pinhole force: '15 pieces ⁇ 77 inches 2 or less, excellent in both oxygen gas barrier properties and bending resistance.
- the total thickness of the polyimide-based laminated biaxially stretched film according to the present invention is preferably 10 or more and 40 or less.
- the total thickness is less than ⁇ 0, the oxygen gas barrier properties and the bending resistance are poor and the wear resistance is poor. Therefore, a satisfactory finome cannot be obtained.
- it exceeds 40 the film strength becomes too hard, and when the sealant layer is further stuck, the whole film becomes very thick. This makes it unsuitable for flexible packaging applications.
- Table 1 shows the layer structure of the finolem and the evaluation results.
- the mixed granules were extruded at 230 ° C using an extruder with an inner diameter of 4 Omm0 and L / D-28 at a temperature of 230 ° C to form a modified ethylene-prote.
- Mixture (C) (mixture of polymer (A) and polymer (B)) containing ⁇ ⁇ -isomer (A) containing CP) and a polymerization residue (P) having an inner layer of about 45 ⁇ Ridge layer unstretched film was obtained.
- the obtained laminated unstretched film is stretched three times in the longitudinal direction by a single-port stretcher under the condition of 60 ° C, and the end of the film is teed. It is held at the interface clip, and is 90% within the tent. After stretching 3 times in the horizontal axis direction under the condition of C, heat treatment was performed at 205 ° C for 6 seconds.
- a mid-layer laminated film was obtained.
- Table 1 shows the composition of the obtained film and the results of measuring the oxygen permeability and the bending resistance by the above-described method.
- Example 2
- Example 1 the ethylene-propylene copolymer was replaced with an ethylene-butene copolymer (ethylene content: 80 mol%, Modified melt modified with maleic anhydride in the same manner as described in the same example, instead of melt flow index (2, 0 g / 10 min).
- a polyamide-based laminated biaxially stretched film was obtained in the same manner as described in the same example, except that the film was replaced with the same (P1).
- Table 1 shows the layer structure of the obtained film and the results of measuring the oxygen permeability and the bending resistance by the above-mentioned method.
- Example 2 In the example described in Example 1, the type and content ratio of the polymer (P), the layer structure, the film thickness, and the composition ratio of the raw materials were each as described in Table 1. A polyamide laminated biaxially stretched film was obtained in the same manner as described in the same example except that the film was replaced.
- Table 1 shows the layer structure of the film for the obtained finolem and the results of measuring the oxygen permeability and the bending resistance by the method described above.
- Example 2 In the example described in Example 1, the polymer (P) was replaced with a high-density polyethylene (Mitsubishi Kasei Corp.
- the obtained laminated film is stretched three times in the longitudinal direction by a drawing machine under the condition of 6 ° C, and the end of the film is taken as a center. After holding it with a clip, stretch it three times in the horizontal axis direction under the condition of 90 in a tenon boom.2.Heat treatment at 5 ° C for 6 seconds was.
- the outer layer contains about 6 layers of the mixture (C) containing the polymer ( ⁇ ) of about 6 outer layers ((c) layer), and about 4 layers of intermediment ( ⁇ ).
- Table 1 shows the composition of the film for the obtained film, and the results obtained by measuring the oxygen transmission rate and the bending resistance by the method described above.
- ⁇ 1 shows the layer structure of the obtained film, and the results obtained by measuring the oxygen permeability and the bending resistance by the above-mentioned method.
- the content ratio of the base (P), the layer structure, the film thickness, and the composition ratio of the raw materials are listed in Table 1 respectively.
- a polyimide-based laminated biaxially stretched film was formed using the M-like method described in the same example.
- Table 1 shows the layer structure of the obtained film, and the results of measuring the oxygen permeability and the bending resistance by the above-mentioned method.
- EVA Ethylene-vinyl acetate copolymer (vinyl acetate)
- L D Low density polyethylene (Mitsubishi Kasei Co., Ltd., Mitsubishi Polyethylene L D F 25 1)
- H D High-density Polyethylene (Mitsubishi Polyethylene HDES)
- Et-Pr Ethylene-propylene copolymer modified with maleic anhydride
- E t -B t Ethylene-butene copolymer ⁇ modified with maleic anhydride
- Et-Pr, PP A mixed base of the ethylene-propylene copolymer of Example 1 and polypropyrene (Mitsubishi Polypro 6100E) The mixture (mixing ratio: 20:80) was modified with maleic anhydride in the same manner as in Example 1, and as shown in Table 1, the polyamide laminated biaxial stretching according to the present invention is shown.
- H The oxygen permeability and the number of pinholes after the bending test are within the above numerical ranges, and the film has special characteristics in both oxygen gas barrier property and bending resistance. Another important factor is its excellent bending resistance.
- the film of the comparative example is equivalent to the oxygen gas barrier property but remarkably inferior in bending resistance as compared with the film of the example. .
- the present invention has a particularly remarkable effect as described below, and its industrial utility value is extremely large.
- the polyamide-based laminated biaxially stretched film according to the present invention has excellent oxygen gas barrier properties, excellent bending resistance, high toughness, and the like. Yes. Therefore, it is suitable for packaging films of foods, medical products, medicines, etc., which do not like the alteration of the contents by oxygen.
- the polyamide-based laminated biaxially stretched film according to the present invention can efficiently collect and reuse scraps such as ear trim materials, and can be used industrially. It can be used effectively for
Description
Claims
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3/34612 | 1991-02-28 | ||
JP3461291 | 1991-02-28 | ||
JP11494691 | 1991-05-20 | ||
JP3/114946 | 1991-05-20 | ||
JP27278291A JP3021854B2 (ja) | 1991-02-28 | 1991-10-21 | ポリアミド系積層二軸延伸フイルム |
JP3/272782 | 1991-10-21 | ||
JP34555391A JP3074883B2 (ja) | 1991-05-20 | 1991-12-26 | ポリアミド系積層二軸延伸フイルム |
JP3/345553 | 1991-12-26 |
Publications (1)
Publication Number | Publication Date |
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WO1992015455A1 true WO1992015455A1 (en) | 1992-09-17 |
Family
ID=27459959
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1992/000211 WO1992015455A1 (en) | 1991-02-28 | 1992-02-26 | Biaxially oriented polyamide laminate film |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0527237A4 (ja) |
AU (1) | AU646331B2 (ja) |
WO (1) | WO1992015455A1 (ja) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5547765A (en) * | 1993-09-07 | 1996-08-20 | Alliedsignal Inc. | Retortable polymeric films |
DE69501957T2 (de) * | 1994-06-13 | 1998-07-30 | Allied Signal Inc | Sterilisierbare, polymere sauerstoffsperrfilms |
US5707750A (en) * | 1994-10-24 | 1998-01-13 | Alliedsignal Inc. | Retortable, high oxygen barrier polymeric films |
JPH10195211A (ja) * | 1996-12-27 | 1998-07-28 | Kureha Chem Ind Co Ltd | 包装用フィルムまたはシート |
FR2765520B1 (fr) * | 1997-07-03 | 1999-08-27 | Nyltech Italia | Structure multicouche a base de polyamides et tube ou conduit a structure multicouche |
ATE259295T1 (de) * | 1997-11-26 | 2004-02-15 | Cryovac Inc | Heissschrumpffähige thermoplastische mehrschichtfolie |
US6645640B1 (en) | 1999-03-23 | 2003-11-11 | Gunze Limited | Multilayered polyamide film with excellent processability |
EP1142704A4 (en) * | 1999-08-27 | 2002-04-17 | Toray Industries | LAMINATE THIN LAYER AND EVPORATION DEPOSIT THIN LAYER USING THE SAME |
JP4961632B2 (ja) * | 2001-02-01 | 2012-06-27 | 三菱瓦斯化学株式会社 | ポリアミド延伸フィルム |
PT2082861E (pt) * | 2006-10-19 | 2012-06-28 | Mitsubishi Gas Chemical Co | Corpo moldado por injecção tendo excelentes propriedades de barreira |
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---|---|---|---|---|
JPS56155762A (en) * | 1980-05-07 | 1981-12-02 | Japan Styrene Paper Corp | Laminated sheet |
JPS5751427A (en) * | 1980-09-12 | 1982-03-26 | Toyobo Co Ltd | Preparation of polyamide laminated film |
JPH01238933A (ja) * | 1988-03-22 | 1989-09-25 | Tosoh Corp | 多層容器 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01176555A (ja) * | 1988-01-06 | 1989-07-12 | Mitsubishi Kasei Corp | 積層ブロー成形品 |
JPH028051A (ja) * | 1988-06-28 | 1990-01-11 | Du Pont Mitsui Polychem Co Ltd | 積層包装材料 |
JP2903161B2 (ja) * | 1989-11-01 | 1999-06-07 | 三菱化学株式会社 | ポリアミド樹脂積層フイルム |
JP2821243B2 (ja) * | 1990-06-15 | 1998-11-05 | 三菱化学株式会社 | 積層二軸延伸フィルムの製造方法 |
-
1992
- 1992-02-26 EP EP19920906199 patent/EP0527237A4/en not_active Ceased
- 1992-02-26 WO PCT/JP1992/000211 patent/WO1992015455A1/ja not_active Application Discontinuation
- 1992-02-26 AU AU13378/92A patent/AU646331B2/en not_active Ceased
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56155762A (en) * | 1980-05-07 | 1981-12-02 | Japan Styrene Paper Corp | Laminated sheet |
JPS5751427A (en) * | 1980-09-12 | 1982-03-26 | Toyobo Co Ltd | Preparation of polyamide laminated film |
JPH01238933A (ja) * | 1988-03-22 | 1989-09-25 | Tosoh Corp | 多層容器 |
Non-Patent Citations (1)
Title |
---|
See also references of EP0527237A4 * |
Also Published As
Publication number | Publication date |
---|---|
AU646331B2 (en) | 1994-02-17 |
AU1337892A (en) | 1992-10-06 |
EP0527237A1 (en) | 1993-02-17 |
EP0527237A4 (en) | 1993-07-21 |
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