WO2023054062A1 - 二軸延伸ポリアミドフィルム及び包装材料 - Google Patents

二軸延伸ポリアミドフィルム及び包装材料 Download PDF

Info

Publication number
WO2023054062A1
WO2023054062A1 PCT/JP2022/034983 JP2022034983W WO2023054062A1 WO 2023054062 A1 WO2023054062 A1 WO 2023054062A1 JP 2022034983 W JP2022034983 W JP 2022034983W WO 2023054062 A1 WO2023054062 A1 WO 2023054062A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
film
biaxially stretched
polyamide
polyamide film
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2022/034983
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
和茂 上田
考道 後藤
卓郎 遠藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyobo Co Ltd
Original Assignee
Toyobo Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyobo Co Ltd filed Critical Toyobo Co Ltd
Priority to CN202280058890.4A priority Critical patent/CN117881538A/zh
Priority to JP2023551344A priority patent/JPWO2023054062A1/ja
Priority to US18/695,294 priority patent/US20250381719A1/en
Priority to KR1020247008046A priority patent/KR20240076774A/ko
Priority to EP22875932.0A priority patent/EP4410548A4/en
Publication of WO2023054062A1 publication Critical patent/WO2023054062A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B65D65/40—Applications of laminates for particular packaging purposes
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal 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
    • B32B15/088—Layered products comprising a layer of metal comprising metal 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 comprising polyamides
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/18—Layered products comprising a layer of metal comprising iron or steel
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • 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
    • 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
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • 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
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/03—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers with respect to the orientation of features
    • B32B7/035—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers with respect to the orientation of features using arrangements of stretched films, e.g. of mono-axially stretched films arranged alternately
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/14—Primary casings; Jackets or wrappings for protecting against damage caused by external factors
    • 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
    • B29K2067/00—Use of polyesters 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
    • B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
    • B29K2077/10—Aromatic polyamides [polyaramides] or derivatives thereof
    • 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
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/005—Oriented
    • B29K2995/0053—Oriented bi-axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B29L2007/008—Wide strips, e.g. films, webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products
    • 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
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/10—Inorganic particles
    • B32B2264/102—Oxide or hydroxide
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • 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
    • B32B2377/00—Polyamides
    • 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
    • B32B2439/00—Containers; Receptacles
    • B32B2439/40—Closed containers
    • 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
    • B32B2439/00—Containers; Receptacles
    • B32B2439/40—Closed containers
    • B32B2439/46—Bags
    • 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
    • B32B2457/00—Electrical equipment
    • B32B2457/10—Batteries
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to biaxially stretched polyamide films and packaging materials that are suitably used for food packaging films and the like.
  • biaxially stretched films made of aliphatic polyamides such as polyamide 6 have excellent impact resistance and bending pinhole resistance, and have been widely used as various packaging material films.
  • a film in which a polyamide-based elastomer is mixed with an aliphatic polyamide is known as a means of improving bending pinhole resistance (see, for example, Patent Document 1).
  • This film has good bending pinhole resistance and impact resistance in a low-temperature environment, and pinholes due to bending fatigue are less likely to occur even in a low-temperature environment.
  • the elastomer added at the time of film production is thermally degraded, so that a deteriorated product called die build-up is likely to be generated at the lip outlet of the die. Deteriorated products themselves fall down, producing defective products, and there is a problem of lowering the production efficiency during continuous film production.
  • Patent Document 2 discloses a stretched film made of a polyamide resin composition containing 1 to 10% by mass of a thermoplastic polyester elastomer. According to this technology, it is said that the bending resistance is excellent even in a low-temperature environment. There was still room for improvement regarding the problem of being easy to generate things.
  • Pinholes are generated not only by bending but also by friction (rubbing). Pinholes caused by bending and methods for improving pinholes caused by friction are often contradictory. For example, if the flexibility of the film is increased, bending pinholes are less likely to occur, but there is a tendency for pinholes due to friction to occur more easily as the film becomes softer.
  • the present invention is excellent in pinhole resistance due to bending (bending pinhole resistance) and pinhole resistance due to repeated contact (wear pinhole resistance), and is also excellent in transparency and adhesive strength with a sealant film, Another object of the present invention is to provide a biaxially stretched polyamide film that can suppress the generation of foreign matter during film formation.
  • the loss elastic modulus E” at 1°C was 1.1 ⁇ 10 8 Pa in the dynamic viscoelasticity measurement under the conditions of tensile mode, chuck distance of 20 mm, frequency of 15 Hz, and heating rate of 5°C/min.
  • a battery packaging material comprising the biaxially stretched polyamide film according to [1] to [5], a metal layer and a sealant film.
  • the present invention it is possible to provide a biaxially oriented polyamide film, a packaging material, a battery packaging material, and a packaging bag that are excellent in impact resistance, bending pinhole resistance, and friction pinhole resistance.
  • the elastomer component does not deteriorate inside the die, it is possible to suppress the adhesion of deteriorated substances to the inner surface of the die and the adhesion of die build-up to the exit of the die slip, thereby enabling continuous production of films for a long period of time.
  • the present invention is a biaxially stretched polyamide film having at least two layers formed from a resin composition containing polyamide 6. At least two layers may be layers formed from the same resin composition, or layers formed from different resin compositions.
  • a preferred embodiment is a biaxially oriented polyamide film comprising at least a layer A formed from the first resin composition and a layer B formed from the second resin composition.
  • the biaxially stretched polyamide film of the present invention was subjected to dynamic viscoelasticity measurement using a viscoelasticity measuring device under the conditions of tensile mode, distance between chucks of 20 mm, frequency of 15 Hz, and heating rate of 5°C/min.
  • the elastic modulus E′′ is 1.1 ⁇ 10 8 Pa or more.
  • the loss elastic modulus E” at 1°C is 1.1 ⁇ 10 8 Pa or more to obtain a biaxially stretched polyamide film that has both excellent impact resistance, bending pinhole resistance and friction pinhole resistance. was made.
  • One method for achieving a loss elastic modulus E′′ at 1°C of 1.1 ⁇ 10 8 Pa or more is to use a biaxially stretched polyamide film having at least two layers, an A layer and a B layer, in which at least the A layer contains a flex resistance agent.
  • a biaxially stretched polyamide film having at least two layers, an A layer and a B layer, in which at least the A layer contains a flex resistance agent.
  • the A layer can also be called a base material layer.
  • the first resin composition forming the A layer contains at least polyamide 6.
  • the first resin composition preferably contains 80 parts by mass or more of polyamide 6, more preferably 85 parts by mass or more, based on 100 parts by mass of the first resin composition.
  • 80 parts by mass or more of polyamide 6 a polyamide film having mechanical strength such as impact strength and gas barrier properties can be obtained.
  • the upper limit of the content of polyamide 6 is preferably 99 parts by mass or less, more preferably 96 parts by mass or less, based on 100 parts by mass of the first resin composition.
  • the first resin composition that forms the A layer contains at least a bending-resistant agent.
  • the bending-resistant agent is not particularly limited as long as it is a substance that has the effect of imparting flexibility to the A layer. Examples include thermoplastic elastomers such as elastomers, ionomer polymers, aliphatic polyester resins, and aliphatic aromatic polyester resins.
  • the flexing agent is preferably an aliphatic polyester resin or an aliphatic aromatic polyester resin. More preferably, it is an aliphatic polyester resin or an aliphatic aromatic polyester resin having a glass transition temperature (Tg) of -30°C or less. By using a polyester copolymer having a glass transition temperature of ⁇ 30° C. or lower, excellent pinhole resistance can be exhibited even in a freezing environment.
  • Polybutylene succinate and polybutylene succinate adipate are preferably used as aliphatic polyester resins.
  • the aliphatic-aromatic polyester resin an aliphatic-aromatic polyester resin containing an adipic acid component is preferred, and polybutylene adipate terephthalate is particularly preferred.
  • the content of the bending-resistant agent contained in the first resin composition forming the A layer is preferably 1 part by mass or more and 20 parts by mass or less, and 4 parts by mass or more and 15 parts by mass, based on 100 parts by mass of the first resin composition. Part by mass or less is more preferable.
  • 1 part by mass or more of the flex-resistant agent By including 1 part by mass or more of the flex-resistant agent, the effect of flex pinhole resistance can be obtained.
  • the film becomes soft, and it is possible to prevent a decrease in puncture strength and impact strength. In addition, the film can be easily stretched, and it is possible to prevent pitch deviation from occurring during processing such as printing.
  • the first resin composition forming the A layer can further contain a polyamide resin at least part of which is derived from biomass.
  • a polyamide resin containing a raw material derived from biomass By containing a polyamide resin containing a raw material derived from biomass, the bending pinhole resistance can be further improved.
  • the content of the polyamide resin, at least part of which is derived from biomass, contained in the layer A is preferably 30 parts by mass or less, more preferably 20 parts by mass or less, based on 100 parts by mass of the first resin composition.
  • the content of the polyamide resin, at least part of which is derived from biomass is 30 parts by mass or less, a homogeneous unstretched film can be obtained when the molten film is cast.
  • Polyamide 11, polyamide 610, polyamide 1010 and polyamide 410 are preferably used as the polyamide resin, at least part of which is derived from biomass, and which can be used for the A layer.
  • the first resin composition that forms the A layer can contain thermoplastic resins other than polyamide 6 resin within a range that does not impair the object of the present invention.
  • thermoplastic resins other than polyamide 6 resin include polyamide resins such as polyamide 12 resin, polyamide 66 resin, polyamide 6/12 copolymer resin, polyamide 6/66 copolymer resin, polyamide MXD6 resin, polyamide MXD10 resin, and polyamide 11/6T copolymer resin.
  • Thermoplastic resins other than polyamides for example, polyester polymers such as polyethylene terephthalate, polybutylene terephthalate, and polyethylene-2,6-naphthalate, and polyolefin polymers such as polyethylene and polypropylene, may be added as necessary. good.
  • Layer A may optionally contain various additives such as other thermoplastic resins, lubricants, heat stabilizers, antioxidants, antistatic agents, antifogging agents, ultraviolet absorbers, dyes and pigments. can be done.
  • additives such as other thermoplastic resins, lubricants, heat stabilizers, antioxidants, antistatic agents, antifogging agents, ultraviolet absorbers, dyes and pigments. can be done.
  • the second resin composition forming the B layer contains at least polyamide 6.
  • the second resin composition preferably contains 70 parts by mass or more of polyamide 6, more preferably 80 parts by mass or more, particularly 90 parts by mass or more, based on 100 parts by mass of the second resin composition. preferable.
  • a polyamide film having mechanical strength such as impact strength and gas barrier properties can be obtained.
  • the upper limit of the content of polyamide 6 is preferably 99 parts by mass or less, more preferably 97 parts by mass or less, and even more preferably 95 parts by mass or less, based on 100 parts by mass of the first resin composition.
  • the polyamide 6 the same polyamide 6 as the polyamide 6 used in the first resin composition can be used.
  • the second resin composition forming the B layer can contain a polyamide-based resin other than polyamide 6.
  • polyamide-based resins other than polyamide 6 include polymetaxylylene adipamide (polyamide MXD6) resin, polyamide 11, polyamide 12, and polyamide 66.
  • the content is preferably 1 part by mass or more and 30 parts by mass or less, based on 100 parts by mass of the second resin composition, and 3 parts by mass or more. 20 parts by mass or less is more preferable, and 5 parts by mass or more and 10 parts by mass or less is particularly preferable. By including 1 part by mass or more, it is possible to provide the film with slipperiness.
  • polyamide MXD6 polymetaxylylene adipamide
  • the second resin composition forming the B layer may contain a copolymerized polyamide resin such as a polyamide 6/12 copolymer resin or a polyamide 6/66 copolymer resin for the purpose of improving adhesion to the sealant film. .
  • the second resin composition forming the B layer can contain a polyamide resin, at least part of which is derived from biomass.
  • Polyamide 11, polyamide 610, polyamide 1010 and polyamide 410 are preferably used as the polyamide resin at least part of which is derived from biomass.
  • the layer B when the biaxially stretched polyamide film is used on the outer surface side of the packaging bag, the layer B is required to have abrasion resistance and pinhole resistance. It is preferable that the second resin composition forming the B layer does not substantially contain a flex-resistant agent. Since the second resin composition does not substantially contain a flex-resistant agent, it is possible to obtain friction pinhole resistance of the film. Moreover, since the second resin composition does not substantially contain a flex-resistant agent, the lamination strength of the film can be improved, and the generation of heat-degraded products can be suppressed.
  • substantially free of a flex-resistant agent means that the second resin composition does not contain a flex-resistant agent at all, or the second resin composition does not contain the second resin composition. It means that the bending resistance agent is contained at a rate of 0.01% by mass or less in 100% by mass.
  • the second resin composition forming the layer B may contain fine particles, an organic lubricant, or the like as a lubricant in order to improve film lubricity.
  • fine particles inorganic fine particles such as silica, kaolin, zeolite, etc., polymer-based organic fine particles such as acrylic, polystyrene, etc. can be appropriately selected and used. From the viewpoint of transparency and slipperiness, it is preferable to use fine silica particles.
  • the average particle size of the fine particles is preferably 0.5 ⁇ m or more and 5.0 ⁇ m or less, more preferably 1.0 ⁇ m or more and 3.0 ⁇ m or less. If the average particle size is 0.5 ⁇ m or more, good slip properties can be expected, and if it is 5.0 ⁇ m or less, it is expected that appearance defects due to increased surface roughness of the film can be prevented. can.
  • the pore volume range of silica is preferably 0.5 ml/g or more and 2.0 ml/g or less, and is 0.8 ml/g or more and 1.6 ml/g or less. is more preferable.
  • a fatty acid amide and/or a fatty acid bisamide can be used as the organic lubricant.
  • Fatty acid amides and/or fatty acid bisamides include erucic acid amide, stearic acid amide, ethylene bis stearic acid amide, ethylene bis behenic acid amide, ethylene bis oleic acid amide and the like.
  • the content of the fatty acid amide and/or fatty acid bisamide contained in the second resin composition forming the B layer is preferably 0.01 parts by mass or more and 0.40 parts by mass, based on 100 parts by mass of the second resin composition. parts or less, more preferably 0.05 to 0.30 parts by mass. When the content is 0.01 parts by mass or more, a lubricating effect can be expected. When the amount is 0.40 parts by mass or less, the wettability of the printing ink can be ensured when the printing layer is provided on the B layer side.
  • Layer B can contain various additives such as other thermoplastic resins, lubricants, heat stabilizers, antioxidants, antistatic agents, antifogging agents, UV absorbers, dyes, and pigments.
  • the biaxially stretched polyamide film of the present invention is a film having at least two layers, A layer and B layer. It is a layered structure.
  • the thickness of the biaxially stretched polyamide film of the present invention is not particularly limited, but when used as a packaging material, it is usually 100 ⁇ m or less, generally 5 to 50 ⁇ m thick, and particularly 8 to 50 ⁇ m thick. 30 ⁇ m is used.
  • the thickness of the A layer is preferably 50% or more and 90% or less, preferably 60% or more, with the total thickness of the A layer and B layer (if there are multiple layers A and B, the total thickness of each layer) being 100%. 80% or less is particularly preferred.
  • the thickness of the A layer By setting the thickness of the A layer to 50% or more, it is possible to impart bending pinhole resistance.
  • the B layer can be provided with wear resistance and pinhole resistance.
  • the biaxially stretched polyamide film of the present invention has excellent bending pinhole resistance, and the number of pinhole defects is 5 or less when a twist bending test using a gelbo flex tester is performed 1000 times at a temperature of 1 ° C. be. More preferably, it is 3 or less.
  • the smaller the number of pinhole defects after the bending test the better the bending pinhole resistance. If the number of pinholes is 5 or less, pinholes are unlikely to occur even if the packaging bag is subjected to a load during transportation. A packaging bag is obtained.
  • the biaxially stretched polyamide film of the present invention has excellent friction pinhole resistance, and in the friction pinhole resistance test according to the measurement method described in the Examples, the distance to pinhole generation is 2900 cm or more. It is more preferably 3100 cm or more, still more preferably 3300 cm or more. The longer the pinhole distance, the better the friction pinhole resistance. If the pinhole distance is 2,900 cm or more, pinholes will occur even if the packaging bag rubs against a cardboard box, etc. during transportation. It is possible to obtain a packaging bag that is difficult to peel off.
  • the biaxially stretched polyamide film of the present invention is characterized by being excellent in both the bending pinhole resistance and friction pinhole resistance properties described above.
  • the biaxially stretched polyamide film of the present invention having these properties is extremely useful as a packaging film because pinholes are less likely to occur during transportation.
  • the biaxially stretched polyamide film of the present invention has a heat shrinkage of 0.6% or more in both the machine direction (hereinafter abbreviated as MD direction) and the width direction (hereinafter abbreviated as TD direction) at 160° C. for 10 minutes.
  • the range is preferably 0% or less, more preferably 0.6% or more and 2.5% or less.
  • the heat shrinkage rate is 3.0% or less, it is possible to suppress the occurrence of curling and shrinkage when heat is applied in the next process such as lamination or printing.
  • it is possible to set the heat shrinkage to less than 0.6% it may become mechanically brittle. Moreover, productivity may deteriorate.
  • the impact strength of the biaxially stretched polyamide film of the present invention is preferably 0.7 J/15 ⁇ m or more, more preferably 0.9 J/15 ⁇ m or more.
  • the puncture strength of the film of the present invention is preferably 0.67 N/ ⁇ m or more.
  • the haze value of the biaxially stretched polyamide film of the present invention is preferably 10% or less. More preferably 7% or less, still more preferably 5% or less. If the haze value is small, the transparency and gloss are good, so when used for packaging bags, clear printing can be performed and the product value is increased. Since the haze value increases when fine particles are added to improve the slipperiness of the film, it is preferable to add fine particles only to the B layer in order to reduce the haze value.
  • the biaxially stretched polyamide film of the present invention preferably has a lamination strength of 4.0 N/15 mm or more after lamination with a polyethylene sealant film.
  • a biaxially oriented polyamide film is usually laminated with a sealant film before being processed into a packaging bag. If the lamination strength is 4.0 N/15 mm or more, sufficient strength of the seal portion can be obtained when packaging bags are produced using the biaxially stretched polyamide film of the present invention in various lamination configurations, A tear-resistant packaging bag is obtained.
  • a raw material resin is melt extruded using an extruder, extruded into a film form from a T-die, cast on a cooling roll and cooled to obtain an unstretched film in which at least the A layer and the B layer are laminated.
  • a coextrusion method using a feed block, a multi-manifold, or the like is preferable for obtaining an unstretched laminated film.
  • a dry lamination method, an extrusion lamination method, or the like can also be selected. In the case of lamination by coextrusion, it is desirable to reduce the difference in melt viscosity between the first resin composition forming the A layer and the second resin composition forming the B layer.
  • the melting temperature of the resin is preferably 220°C or higher and 350°C or lower. If it is less than the above range, unmelted materials may occur, resulting in appearance defects such as defects.
  • the die temperature is preferably 250° C. or higher and 350° C. or lower.
  • the cooling roll temperature is preferably -30°C or higher and 80°C or lower, more preferably 0°C or higher and 50°C or lower.
  • a method using an air knife or an electrostatic adhesion method in which an electrostatic charge is applied is preferably applied. can.
  • the opposite side of the cast unstretched film it is preferable to cool the opposite side of the cast unstretched film to the cooling roll.
  • the unstretched film thus obtained is biaxially stretched to obtain the biaxially stretched polyamide film of the present invention.
  • the stretching method may be a simultaneous biaxial stretching method or a sequential biaxial stretching method.
  • the sequential biaxial stretching method is preferable because the film-forming speed can be increased, which is advantageous in terms of production cost.
  • single-stage stretching or multi-stage stretching such as two-stage stretching can be used as the stretching method in the MD direction.
  • multi-stage stretching in the MD direction such as two-stage stretching is preferable in terms of physical properties and uniformity (isotropy) of physical properties in the MD and TD directions, rather than single-stage stretching.
  • Stretching in the MD direction in the sequential biaxial stretching method is preferably roll stretching.
  • the lower limit of the stretching temperature in the MD direction is preferably 50°C, more preferably 55°C, and still more preferably 60°C. If the temperature is less than 50°C, the resin may not be softened, making stretching difficult.
  • the upper limit of the stretching temperature in the MD direction is preferably 120°C, more preferably 115°C, still more preferably 110°C. If the temperature exceeds 120°C, the resin may become too soft to allow stable stretching.
  • the lower limit of the draw ratio in the MD direction is preferably 2.2 times, more preferably 2.5 times, and still more preferably 2.5 times. 8 times. If it is less than 2.2 times, the thickness accuracy in the MD direction may be lowered, and the crystallinity may be too low to lower the impact strength.
  • the upper limit of the draw ratio in the MD direction is preferably 5.0 times, more preferably 4.5 times, and most preferably 4.0 times. If it exceeds 5.0 times, subsequent stretching may become difficult.
  • the stretching in the MD direction is performed in multiple stages, the stretching as described above is possible in each stretching. It is necessary to adjust the draw ratio. For example, in the case of two-stage stretching, it is preferable to stretch the first stage from 1.5 times to 2.1 times and the second stage from 1.5 times to 1.8 times.
  • a film stretched in the MD direction is stretched in the TD direction with a tenter, heat-set, and then subjected to relaxation treatment (also called relaxation treatment).
  • the lower limit of the stretching temperature in the TD direction is preferably 50°C, more preferably 55°C, still more preferably 60°C. If the temperature is less than 50°C, the resin may not be softened, making stretching difficult.
  • the upper limit of the stretching temperature in the TD direction is preferably 190°C, more preferably 185°C, still more preferably 180°C. If the temperature exceeds 190°C, crystallization may occur, making stretching difficult.
  • the lower limit of the draw ratio in the TD direction is preferably 2.8, more preferably 3.2, still more preferably 3.5. times, particularly preferably 3.8 times. If it is less than 2.8, the thickness accuracy in the TD direction may be lowered, and the crystallinity may be too low to lower the impact strength.
  • the upper limit of the draw ratio in the TD direction is preferably 5.5 times, more preferably 5.0 times, still more preferably 4.7 times, particularly preferably 4.5 times, most preferably 4.5 times. Three times. If it exceeds 5.5 times, the productivity may be remarkably lowered.
  • the lower limit of the heat setting temperature is preferably 210°C, more preferably 212°C.
  • the upper limit of the heat setting temperature is preferably 220°C, more preferably 218°C. If the heat setting temperature is too high, the impact strength tends to decrease.
  • the heat setting time is preferably 0.5 to 20 seconds. Furthermore, it is 1 to 15 seconds. The heat setting time can be set to an appropriate time in consideration of the heat setting temperature and the wind speed in the heat setting zone. If the heat setting conditions are too weak, crystallization and orientation relaxation become insufficient, causing the above problems. If the heat setting conditions are too strong, the toughness of the film will decrease.
  • Relaxation treatment after heat setting treatment is effective in controlling the heat shrinkage rate.
  • the temperature for the relaxation treatment can be selected within a range from the heat setting temperature to the Tg of the resin. If the relaxation temperature is too high, the shrinkage speed will be too fast, causing distortion and the like, which is not preferable. Conversely, if the relaxation temperature is too low, the relaxation treatment will not be performed, and the film will simply loosen, the heat shrinkage rate will not decrease, and the dimensional stability will deteriorate.
  • the lower limit of the relaxation rate of the relaxation process is preferably 0.5%, more preferably 1%. If it is less than 0.5%, the heat shrinkage rate may not sufficiently decrease.
  • the upper limit of the relaxation rate is preferably 20%, more preferably 15%, still more preferably 10%. If it exceeds 20%, sagging may occur in the tenter, making production difficult.
  • the biaxially stretched polyamide film of the present invention can be subjected to heat treatment or humidity control treatment in order to improve the dimensional stability depending on the application.
  • heat treatment or humidity control treatment in order to improve the adhesiveness of the film surface, it is possible to perform corona treatment, coating treatment, flame treatment, etc., printing, vapor deposition of metals and inorganic oxides, etc. It is also possible.
  • the biaxially stretched polyamide film of the present invention is processed into a laminated film laminated with a sealant film to provide a packaging material.
  • Sealant films include unstretched linear low density polyethylene (LLDPE) films, unstretched polypropylene (CPP) films, ethylene-vinyl alcohol copolymer resin (EVOH) films, and the like.
  • the sealant film may be laminated so as to be in direct contact with the biaxially stretched polyamide film, or may be laminated via another layer such as an adhesive layer.
  • Said packaging material may comprise a printed layer.
  • the packaging material of the present invention is made into bags and processed into packaging bags.
  • the biaxially stretched polyamide film of the present invention is processed into a laminated film in which a metal layer and a sealant film are laminated to provide a packaging material for battery exterior.
  • the metal for the metal layer include various metal elements (aluminum, iron, copper, nickel, etc.), and an aluminum layer is particularly preferred.
  • the metal layer may be laminated so as to be in direct contact with the biaxially stretched polyamide film of the present invention, or may be laminated via another layer such as an adhesive layer.
  • the battery packaging material of the present invention can contain a printed layer.
  • the biaxially stretched polyamide film of the present invention is excellent in impact resistance, bending pinhole resistance, and wear pinhole resistance, and is therefore suitable as a battery exterior material that requires high strength and durability.
  • the film was evaluated by the following measurement method. Unless otherwise specified, measurements were carried out in a measurement room at 23° C. and a relative humidity of 65%.
  • Thickness of the film Divide the film into 10 equal parts in the TD direction (for narrow films, the width should be such that the thickness can be measured), and stack 10 films of 100 mm in the MD direction. Cut out and condition at 23° C. and 65% relative humidity for 2 hours or longer. The center thickness of each sample was measured using a tester industry thickness gauge, and the average value was taken as the thickness.
  • Heat shrinkage rate of film was measured by the following formula according to the dimensional change test method described in JIS C2318, except that the test temperature was 160°C and the heating time was 10 minutes.
  • Thermal shrinkage [(length before treatment - length after treatment) / length before treatment] x 100 (%)
  • Tensile modulus of film The obtained biaxially stretched polyamide film was allowed to stand for 2 hours in a room adjusted to 23°C and relative humidity of 50% RH, and then 150 mm in the measurement direction of MD and TD of the film (reference point A sample was obtained by cutting into strips having a distance of 100 mm and a length of 15 mm in the direction perpendicular to the measurement direction. A tensile test was performed at a test speed of 200 mm/min using a tensile tester (AG-1 manufactured by Shimadzu Corporation) equipped with a 1 kN load cell and a sample holder. The elastic modulus was calculated from the gradient of the obtained load-elongation curve. Three samples were measured, and the average value of each was calculated.
  • the resulting laminate film was cut to 12 inches by 8 inches and formed into a cylinder with a diameter of 3.5 inches, and one end of the cylindrical film was placed on the fixed head side of the Gelboflex tester and the other end was on the movable head side. and the initial gripping distance was 7 inches. A twist of 440 degrees is given in the first 3.5 inches of the stroke, and then 2.5 inches is a linear horizontal motion to complete the full stroke. The number of pinholes generated was counted. In addition, the measurement was performed in an environment of 1 degreeC.
  • the L-LDPE film side of the test film was placed on a filter paper (Advantech, No. 50) with the L-LDPE film side down, and the four corners were fixed with sellotape (registered trademark).
  • Ink pilot ink (product number INK-350-blue) diluted 5 times with pure water) was applied onto the test film and spread over the entire surface using a rubber roller. After wiping off the unnecessary ink, the test film was removed and the number of ink spots on the filter paper was counted.
  • Friction and Pinhole Resistance of Film Using a fastness tester (Toyo Seiki Seisakusho), a friction test was performed by the following method to measure the pinhole generation distance.
  • a laminate film similar to that produced in the bending resistance pinhole property evaluation was folded in four to produce a test sample with sharpened corners. Minutes, weight: Rubbed against the inner surface of the cardboard with a weight of 100 g.
  • a schematic diagram of part of the measurement apparatus is shown in FIG.
  • the pinhole generation distance was calculated according to the following procedure. The longer the pinhole generation distance, the better the friction pinhole resistance.
  • a friction test was conducted at an amplitude of 100 times and a distance of 2500 cm.
  • the friction test was performed by increasing the number of amplitudes by 20 times and increasing the distance by 500 cm.
  • the friction test was conducted by increasing the number of amplitudes by 20 times and increasing the distance by 500 cm. This was repeated, and the distance at which the pinhole was opened was defined as x, and was defined as level 1.
  • the friction test was performed with an amplitude of 20 times and a distance of 500 cm.
  • the friction test was conducted by further decreasing the number of amplitudes by 20 times and the distance by 500 cm. This was repeated, and the distance at which no pinhole was opened was designated as ⁇ , and was designated as level 1.
  • level 2 when the final result was ⁇ in level 1, the friction test was performed by increasing the number of amplitudes by 20 times.
  • the friction test was performed by reducing the number of amplitudes by 20 times.
  • levels 3 to 20 if the previous level was ⁇ , the number of times of amplitude was increased by 20 times and the friction test was performed. If it was x at the previous level, reduce the number of amplitudes by 20 times and perform the friction test.
  • Friction pinhole occurrence distance median + 500 x ( ⁇ (coefficient x number of tests with no holes) / holes number of trials not opened) + 1/2)
  • Friction pinhole occurrence distance median + 500 x ( ⁇ (coefficient x number of tests with holes) / holes open number of tests) - 1/2)
  • Laminate strength A laminate film prepared in the same manner as described in the description of the above bending resistance evaluation was cut into strips of 15 mm width ⁇ 200 mm length, and one end of the laminate film was attached to biaxially stretched polyamide. Peel off at the interface between the film and the linear low-density polyethylene film, using (manufactured by Shimadzu Corporation, Autograph), temperature 23 ° C., relative humidity 50%, pulling speed 200 mm / min, peeling angle 90 °. The lamination strength was measured three times each in the MD direction and the TD direction, and the average value was evaluated.
  • Example 1 Using an apparatus consisting of two extruders and a co-extrusion T die with a width of 380 mm, a layer B/layer/B layer is laminated by a feed block method, and a molten resin of the following resin composition is formed into a film from the T die. The film was extruded to a temperature of 20° C., cast on a cooling roll controlled at 20° C., and electrostatically adhered to obtain an unstretched film having a thickness of 200 ⁇ m.
  • Resin composition constituting layer A Polyamide 6 (manufactured by Toyobo Co., Ltd., relative viscosity 2.8, melting point 220 ° C.) 95 parts by mass; Polybutylene terephthalate adipate (manufactured by BASF, trade name "Ecoflex"), glass transition temperature -31.3 ° C., melting point 120 ° C.) 5 parts by mass
  • Resin composition constituting layer B Polyamide 6 (manufactured by Toyobo Co., Ltd., relative viscosity 2.8, melting point 220 ° C.) 90 parts by mass; Polyamide MXD6 (Mitsubishi Gas Chemical Co., Ltd., relative viscosity 2.1, melting point 237 ° C.) 10 parts by mass; Porous silica fine particles (manufactured by Fuji Silysia Chemical Co., Ltd., average particle diameter 2.0 ⁇ m, pore volume 1.6 m
  • the configuration of the feed block and the discharge rate of the extruder were adjusted so that the total thickness of the biaxially stretched polyamide film was 15 ⁇ m, the thickness of the A layer was 9 ⁇ m, and the thickness of the B layer was 3 ⁇ m on each side.
  • the obtained unstretched film was guided to a roll type stretching machine, and after being stretched 1.73 times in the MD direction at 80°C by utilizing the peripheral speed difference of the rolls, it was further stretched 1.85 times at 70°C. Subsequently, this uniaxially stretched film is guided to a tenter type stretching machine, preheated at 110° C., and stretched in the TD direction at 120° C. 1.2 times, 130° C. 1.7 times, and 160° C. 2.0 times. , heat setting treatment at 218° C., followed by 7% relaxation treatment at 218° C., and corona discharge treatment on the surface to be dry-laminated with the linear low-density polyethylene film to obtain a biaxially oriented polyamide film. Table 2 shows the evaluation results of the obtained biaxially stretched polyamide film.
  • Examples 2-5) A biaxially stretched polyamide film was obtained in the same manner as in Example 1, except that the film forming conditions such as the resin compositions of the layers A and B and the heat setting temperature were changed as shown in Table 1. Table 1 shows the evaluation results of the obtained biaxially stretched film.
  • the films of the examples were excellent in both bending pinhole resistance and friction pinhole resistance. Further, the haze was low, the transparency was good, the impact strength and the puncture strength were high, and the lamination strength with the sealant film was high, so that it was excellent as a packaging film. In addition, even during film formation for a long period of time, it was possible to stably form a film without adhesion of deteriorated substances to the lip of the die.
  • the biaxially stretched polyamide film containing no flex-resistant agent of Comparative Example 1 was inferior in flex pinhole resistance.
  • Comparative Example 2 contained a flex-resistant agent, its loss elastic modulus E′′ was small, resulting in poor flex pinhole resistance.
  • the B layer also contained a flex-resistant agent, the laminate strength and the generation cycle of heat-degraded products increased. inferior.
  • Comparative Examples 3, 4, and 5 the amount of the flexing agent is sufficient and the loss elastic modulus E′′ is 1.1 ⁇ 10 8 Pa or more. Because it contained an agent, it was inferior in resistance to friction pinholes, and degraded substances adhered to the lip of the die during the extrusion process.
  • Head part of fastness tester 2 Corrugated board 3: Mounting paper for holding sample 4: Film sample folded in four 5: Rubbing amplitude direction

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Laminated Bodies (AREA)
PCT/JP2022/034983 2021-09-30 2022-09-20 二軸延伸ポリアミドフィルム及び包装材料 Ceased WO2023054062A1 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN202280058890.4A CN117881538A (zh) 2021-09-30 2022-09-20 双轴拉伸聚酰胺膜和包装材料
JP2023551344A JPWO2023054062A1 (https=) 2021-09-30 2022-09-20
US18/695,294 US20250381719A1 (en) 2021-09-30 2022-09-20 Biaxially stretched polyamide film and packaging material
KR1020247008046A KR20240076774A (ko) 2021-09-30 2022-09-20 2축 연신 폴리아미드 필름 및 포장 재료
EP22875932.0A EP4410548A4 (en) 2021-09-30 2022-09-20 BIAXIALLY STRETCHED POLYAMIDE FILM AND PACKAGING MATERIAL

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021161266 2021-09-30
JP2021-161266 2021-09-30

Publications (1)

Publication Number Publication Date
WO2023054062A1 true WO2023054062A1 (ja) 2023-04-06

Family

ID=85782542

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/034983 Ceased WO2023054062A1 (ja) 2021-09-30 2022-09-20 二軸延伸ポリアミドフィルム及び包装材料

Country Status (7)

Country Link
US (1) US20250381719A1 (https=)
EP (1) EP4410548A4 (https=)
JP (1) JPWO2023054062A1 (https=)
KR (1) KR20240076774A (https=)
CN (1) CN117881538A (https=)
TW (1) TW202333956A (https=)
WO (1) WO2023054062A1 (https=)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023176214A1 (ja) * 2022-03-16 2023-09-21 東洋紡株式会社 二軸配向ポリアミドフィルム

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11334007A (ja) * 1998-05-27 1999-12-07 Toyobo Co Ltd 積層ポリアミドフィルム
JP2002127337A (ja) * 2000-10-24 2002-05-08 Unitika Ltd 多層延伸ポリアミドフィルム
JP2003113259A (ja) * 2001-07-31 2003-04-18 Toray Ind Inc 二軸配向ポリエステルフィルム
WO2017217436A1 (ja) * 2016-06-15 2017-12-21 ユニチカ株式会社 ポリアミド系フィルム、これを用いた積層体及び容器、ならびにその製造方法
JP2018196929A (ja) * 2017-05-23 2018-12-13 昭和電工パッケージング株式会社 ラミネート材
WO2019131752A1 (ja) 2017-12-28 2019-07-04 ユニチカ株式会社 ポリアミド系フィルムおよびその製造方法
JP2020111050A (ja) * 2019-01-15 2020-07-27 グンゼ株式会社 ポリアミド系フィルム
JP2020163587A (ja) * 2019-03-28 2020-10-08 東洋紡株式会社 易接着性ポリアミドフィルム
WO2021200489A1 (ja) * 2020-03-30 2021-10-07 東洋紡株式会社 二軸延伸ポリアミドフィルム

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11254615A (ja) 1998-03-09 1999-09-21 Toyobo Co Ltd ポリアミド系積層フィルム
KR20210132085A (ko) * 2019-02-18 2021-11-03 도요보 가부시키가이샤 2축 연신 폴리아미드 필름 및 적층 필름

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11334007A (ja) * 1998-05-27 1999-12-07 Toyobo Co Ltd 積層ポリアミドフィルム
JP2002127337A (ja) * 2000-10-24 2002-05-08 Unitika Ltd 多層延伸ポリアミドフィルム
JP2003113259A (ja) * 2001-07-31 2003-04-18 Toray Ind Inc 二軸配向ポリエステルフィルム
WO2017217436A1 (ja) * 2016-06-15 2017-12-21 ユニチカ株式会社 ポリアミド系フィルム、これを用いた積層体及び容器、ならびにその製造方法
JP2018196929A (ja) * 2017-05-23 2018-12-13 昭和電工パッケージング株式会社 ラミネート材
WO2019131752A1 (ja) 2017-12-28 2019-07-04 ユニチカ株式会社 ポリアミド系フィルムおよびその製造方法
JP2020111050A (ja) * 2019-01-15 2020-07-27 グンゼ株式会社 ポリアミド系フィルム
JP2020163587A (ja) * 2019-03-28 2020-10-08 東洋紡株式会社 易接着性ポリアミドフィルム
WO2021200489A1 (ja) * 2020-03-30 2021-10-07 東洋紡株式会社 二軸延伸ポリアミドフィルム

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4410548A4

Also Published As

Publication number Publication date
JPWO2023054062A1 (https=) 2023-04-06
EP4410548A4 (en) 2025-10-08
US20250381719A1 (en) 2025-12-18
CN117881538A (zh) 2024-04-12
EP4410548A1 (en) 2024-08-07
TW202333956A (zh) 2023-09-01
KR20240076774A (ko) 2024-05-30

Similar Documents

Publication Publication Date Title
JP7444056B2 (ja) 二軸延伸ポリアミドフィルム及び積層フィルム
JP2021121507A (ja) 積層延伸ポリアミドフィルム
EP3287258A1 (en) Biaxially stretched polyester film, and production method therefor
JP7844806B2 (ja) 二軸延伸ポリアミドフィルムの製造方法
US11794457B2 (en) Multilayered stretched polyamide film
US20220259431A1 (en) Gas-barrier polyamide film
WO2023054062A1 (ja) 二軸延伸ポリアミドフィルム及び包装材料
JP2023014436A (ja) 二軸延伸ポリアミドフィルム
WO2024157875A1 (ja) 二軸延伸ポリアミドフィルム、および包装材料
WO2020195795A1 (ja) 積層延伸ポリアミドフィルム
JP4618228B2 (ja) ポリアミド系混合樹脂積層フィルムロール、およびその製造方法
JP2023151064A (ja) 易裂性二軸延伸ポリアミドフィルム
JP2024051845A (ja) 包装用積層フィルム
JP2021017023A (ja) 積層延伸ポリアミドフィルム
JP7619530B1 (ja) 二軸延伸ポリアミドフィルム
JP3829866B1 (ja) ポリアミド系混合樹脂積層フィルムロール、およびその製造方法
JP2007015304A (ja) ポリアミド系混合樹脂積層フィルムロールの製造方法
JP2008087350A (ja) ポリアミド系混合樹脂積層フィルムロールの製造方法
WO2022196738A1 (ja) 二軸延伸ポリアミドフィルム及びラミネートフィルム
JP2008087377A (ja) 蒸着ポリアミド系混合樹脂積層フィルムロール、およびその製造方法
JP2008087379A (ja) ポリアミド系混合樹脂積層フィルムロール、およびその製造方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22875932

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2023551344

Country of ref document: JP

WWE Wipo information: entry into national phase

Ref document number: 202280058890.4

Country of ref document: CN

WWE Wipo information: entry into national phase

Ref document number: 2401001855

Country of ref document: TH

WWE Wipo information: entry into national phase

Ref document number: 202447028837

Country of ref document: IN

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2022875932

Country of ref document: EP

Effective date: 20240430