WO2013141135A1 - 二軸延伸ナイロンフィルム、ラミネートフィルム、ラミネート包材および二軸延伸ナイロンフィルムの製造方法 - Google Patents

二軸延伸ナイロンフィルム、ラミネートフィルム、ラミネート包材および二軸延伸ナイロンフィルムの製造方法 Download PDF

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WO2013141135A1
WO2013141135A1 PCT/JP2013/057203 JP2013057203W WO2013141135A1 WO 2013141135 A1 WO2013141135 A1 WO 2013141135A1 JP 2013057203 W JP2013057203 W JP 2013057203W WO 2013141135 A1 WO2013141135 A1 WO 2013141135A1
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Prior art keywords
film
biaxially stretched
stretched nylon
laminate
refractive index
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PCT/JP2013/057203
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English (en)
French (fr)
Japanese (ja)
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真男 高重
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出光ユニテック株式会社
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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
    • B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
    • B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
    • 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
    • B29C55/28—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of blown tubular films, e.g. by inflation
    • 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
    • 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
    • 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
    • C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers

Definitions

  • the present invention particularly relates to a biaxially stretched nylon film, a laminate film, a laminate packaging material and a method for producing a biaxially stretched nylon film that can be suitably used as a packaging material for cold forming.
  • Biaxially stretched nylon film (hereinafter also referred to as ONy film) is excellent in strength, impact resistance, pinhole resistance, etc., and is therefore often used for applications that require heavy strength loads such as heavy weight packaging and water packaging.
  • the laminate packaging material including the ONy film is used as a packaging material for cold molding that is superior in safety and flexibility in shape (drawing moldability) and can be reduced in thickness and weight compared to hot molding.
  • Such laminate packaging material including ONy film is suitably used for battery packaging, pharmaceutical packaging (PTP: Press through pack packaging, etc.), daily necessities (refillable packaging for liquid detergents, etc.), foods, etc. be able to.
  • the packaging material for cold forming is required to further improve drawability (deep drawability) as the capacity of batteries and the like increases.
  • redrawable packaging materials for liquid detergents are required to have deep drawability when a straw or the like for an inlet is attached.
  • high moisture resistance and deep drawability are required even for PTP packaging materials. ing.
  • a laminate packaging material including a biaxially stretched nylon film as described in Patent Document 1 there is no problem with ordinary drawing, but pinholes may occur when deep drawing is performed.
  • the present invention provides a biaxially stretched nylon film, a laminate film, a laminate packaging material, and a method for producing a biaxially stretched nylon film that have pinhole resistance and have excellent deep drawability during cold forming. For the purpose.
  • cold molding refers to molding performed at room temperature without heating.
  • One means of such cold forming is to use a cold forming machine used for forming aluminum foil or the like to push the sheet material into the female mold with a male mold and press it at high speed. According to such cold forming, plastic deformation such as molding, bending, shearing and drawing can be generated without heating.
  • the present invention has been completed on the basis of such knowledge, and provides the following biaxially stretched nylon film, laminate film, laminate packaging material, and method for producing a biaxially stretched nylon film.
  • the plane refractive index ratio (Nx / Ny) of the film preferably satisfies the condition represented by the following formula (F2). 1.0 ⁇ (Nx / Ny) ⁇ 1.0065 (F2)
  • the biaxially stretched nylon film of the present invention has a maximum three-dimensional birefringence ⁇ n in the range of 70 ° to 90 ° in the angle distribution plane when measured by tilting the film by 30 °, and is 0.004 or less. It is characterized by being.
  • the maximum value of the three-dimensional birefringence ⁇ n is preferably 0.003 or less.
  • the laminate film of the present invention is formed by laminating the biaxially stretched nylon film.
  • the laminate film of the present invention is preferably used for cold forming.
  • the laminate packaging material of the present invention is characterized by using the laminate film.
  • the method for producing a biaxially stretched nylon film of the present invention is a method for producing a biaxially stretched nylon film for producing the biaxially stretched nylon film, and a raw film production process for forming a raw film from the raw material, In a tubular biaxial stretching method, a biaxial stretching step of biaxially stretching the raw film, and a heat setting step of heat-treating the film after the biaxial stretching step by heat treatment. It is a feature.
  • a biaxially stretched nylon film a laminate film, a laminate packaging material, and a method for producing a biaxially stretched nylon film having pinhole resistance and excellent deep drawability during cold forming. be able to. Furthermore, the biaxially stretched nylon film of the present invention has good stretching stability and excellent film thickness accuracy.
  • FIG. 1 It is a schematic block diagram which shows an example of the apparatus which manufactures the biaxially stretched nylon film of this invention. It is a figure which shows angle distribution of the three-dimensional birefringence in Example 2-1. It is a figure which shows the angle distribution of the three-dimensional birefringence in Example 2-2. It is a figure which shows the angle distribution of the three-dimensional birefringence in the comparative example 2-1. It is a figure which shows the angle distribution of the three-dimensional birefringence in the comparative example 2-2.
  • the biaxially stretched nylon film (ONy film) of this embodiment is formed by biaxially stretching a raw film made of nylon resin as a raw material and heat-fixing it at a predetermined temperature.
  • Nylon 6, nylon 8, nylon 11, nylon 12, nylon 6,6, nylon 6,10, nylon 6,12, etc. can be used as the nylon resin as the raw material.
  • Nylon 6 (hereinafter also referred to as Ny6) is preferably used from the viewpoint of physical properties, melting characteristics, and ease of handling.
  • the chemical formula of Ny6 is shown in the following formula (1).
  • the number average molecular weight of the raw material nylon resin is preferably 15000 or more and 30000 or less, and more preferably 22000 or more and 24000 or less.
  • the maximum refractive index value in the ONy film surface is Nx
  • the minimum refractive index value in the ONy film surface is Ny
  • the refractive index in the thickness direction of the ONy film is
  • the degree of plane orientation (P) satisfies the condition represented by the following formula (F1).
  • P (Nx + Ny) /2 ⁇ Nz ⁇ 0.042 (F1)
  • the degree of plane orientation (P) is less than 0.042, the deep drawability of the resulting film is insufficient.
  • the planar refractive index ratio (Nx / Ny) of the ONy film satisfies the condition represented by the following mathematical formula (F2). 1.0 ⁇ (Nx / Ny) ⁇ 1.0065 (F2)
  • the plane refractive index ratio (Nx / Ny) is more preferably 1.0055 or less.
  • the components Nx, Ny, and Nz of the three-dimensional refractive index were obtained by measuring the refractive indexes of the films tilted at 0 ° and 45 ° using RETS-100 manufactured by Otsuka Electronics Co., Ltd. It can be calculated by analyzing the results.
  • the three-dimensional refractive index is a value at a measurement wavelength of 589 nm.
  • the laminate film of this embodiment is configured by laminating one or two or more other laminate base materials on at least one surface of the above-described ONy film.
  • other laminate base materials include, for example, an aluminum layer, a film containing an aluminum layer, a polypropylene-based or polyethylene-based seal layer (sealant layer), and the like.
  • the laminate packaging material of the present embodiment is made of polyethylene terephthalate (PET), polyester resin, polyvinylidene chloride resin, polyvinylidene chloride copolymer resin, lubricant, or the like on at least one surface of the above-mentioned ONy film.
  • a laminate in which an antistatic agent or a coating layer of nitrified cotton amide resin is further laminated may be used.
  • By laminating such a laminate substrate it is possible to improve manufacturing efficiency and conveyance efficiency, and functionality (chemical resistance, electrical insulation, moisture resistance, cold resistance, workability, etc.) Can be obtained.
  • stacking aspect of the said laminate film ONy / Al / PP, PET / ONy / Al / PP, ONy / Al / PVC is mentioned, for example.
  • the laminate packaging material of this embodiment is comprised from the said laminate film.
  • a laminate packaging material including an aluminum layer is not suitable for cold forming because the aluminum layer is easily broken by necking during cold forming.
  • the above-described ONy film has excellent drawability, so that it is possible to suppress the breakage of the aluminum layer during cold deep drawing, etc. The generation of pinholes in can be suppressed. Therefore, even when the total thickness of the packaging material is thin, a molded product having a sharp shape and high strength can be obtained.
  • the total thickness of the ONy film and other laminate base material is preferably 200 ⁇ m or less.
  • the total thickness exceeds 200 ⁇ m, it becomes difficult to form the corner portion by cold forming, and it tends to be difficult to obtain a molded product having a sharp shape.
  • the thickness of the ONy film in the laminate packaging material of the present embodiment is preferably 5 ⁇ m or more and 50 ⁇ m or less, and more preferably 10 ⁇ m or more and 30 ⁇ m or less.
  • the thickness of the ONy film is less than 5 ⁇ m, the impact resistance of the laminate packaging material tends to be low, and the cold formability tends to be insufficient.
  • the thickness of the ONy film exceeds 50 ⁇ m, it is difficult to obtain an effect of further improving the impact resistance of the laminate packaging material, which is not preferable because the total thickness of the packaging material is increased.
  • the film manufacturing apparatus 100 includes an original fabric manufacturing apparatus 90 for manufacturing the original fabric film 1, a biaxial stretching apparatus (tubular stretching apparatus) 10 that stretches the original fabric film 1, and stretching.
  • a first heat treatment device 20 that preheats a base film 2 that is folded later (hereinafter also simply referred to as “film 2”), a separation device 30 that separates the preheated film 2 into two upper and lower sheets, A second heat treatment device 40 that heat-treats (heat-set) the separated film 2, a tension control device 50 that applies tension to the film 2 from the downstream side when the film 2 is heat-set, and the film 2 is heat-set.
  • a winding device 60 for winding the biaxially stretched nylon film 3 (hereinafter also simply referred to as “film 3”).
  • the raw fabric manufacturing apparatus 90 includes an extruder 91, a circular die 92, a water cooling ring 93, a stabilizer plate 94, and a pinch roll 95.
  • the tubular stretching device 10 is a device for producing a film 2 by biaxially stretching (bubble stretching) a tubular raw film 1 with the pressure of internal air.
  • the tubular stretching device 10 includes a pinch roll 11, a heating unit 12, a guide plate 13, and a pinch roll 14.
  • the first heat treatment apparatus 20 is an apparatus for preliminarily heat-treating the flat film 2.
  • the first heat treatment apparatus 20 includes a tenter 21 and a heating furnace 22.
  • the separation device 30 includes a guide roll 31, a trimming device 32, separation rolls 33A and 33B, and grooved rolls 34A to 34C. Further, the trimming device 32 has a blade 321.
  • the second heat treatment apparatus 40 includes a tenter 41 and a heating furnace 42 as shown in FIG.
  • the tension controller 50 includes guide rolls 51 ⁇ / b> A and 51 ⁇ / b> B and a tension roll 52.
  • the winding device 60 includes a guide roll 61 and a winding roll 62.
  • the raw material nylon resin is melt-kneaded by an extruder 91 and extruded into a tube shape by a circular die 92.
  • the tubular molten resin is cooled by a water cooling ring 93.
  • the raw film 1 is molded by rapidly cooling a molten nylon resin as a raw material by a water cooling ring 93.
  • the cooled original film 1 is folded by the stabilizer 94.
  • the folded original fabric film 1 is sent to the next biaxial stretching process by a pinch roll 95 as a flat film.
  • the original film 1 manufactured by the original film manufacturing process is introduced into the apparatus as a flat film by a pinch roll 11.
  • the introduced raw film 1 is bubble-stretched by being heated with infrared rays at the heating unit 12.
  • the film 2 after being bubble-stretched is folded by the guide plate 13.
  • the folded film 2 is pinched by the pinch roll 14 and sent to the next first heat treatment step as a flat film 2.
  • the draw ratios in the MD direction and the TD direction are each preferably 2.8 times or more.
  • the difference (TD ⁇ MD) obtained by subtracting the draw ratio in the MD direction from the draw ratio in the TD direction is preferably 0.1 times or more, more preferably 0.2 times or more and 0.8 times or less.
  • it is still more preferably 0.3 times or more and 0.8 times or less. If the value of TD-MD is less than the lower limit, the deep drawability of the resulting film tends to be insufficient, and the thickness accuracy of the film tends to decrease.
  • TD-MD when the value of TD-MD is 0.1 times or less, the stretching stability is inferior and the thickness accuracy of the film tends to be lowered. On the other hand, if the value of TD-MD exceeds the above upper limit, the deep drawability of the resulting film tends to be insufficient, and the stretching stability tends to be lowered.
  • the film 2 sent from the biaxial stretching step is at or above the shrinkage start temperature of the film 2 and about 30 ° C. higher than the melting point of the film 2 while being gripped at both ends by clips (not shown) of the tenter 21.
  • the film 2 is preheated at a low temperature or lower and sent to the next separation step.
  • the heat treatment temperature in the first heat treatment is preferably 120 ° C. or higher and 190 ° C. or lower, and the relaxation rate is preferably 15% or lower.
  • the flat film 2 sent through the guide roll 31 is cut into both ends by a blade 321 of a trimming device 32 and separated into two films 2A and 2B.
  • film 2A, 2B is isolate
  • the incision of the flat film 2 may be performed so that a part of the ear is generated by positioning the blade 321 slightly inward from both ends, or by positioning the blade 321 in the fold portion of the film 2. , It may be performed so that the ear does not occur.
  • These films 2A and 2B are overlapped again by three grooved rolls 34A to 34C positioned in order in the film flow direction, and sent to the next second heat treatment step.
  • these grooved rolls 34A to 34C are obtained by plating the surface after the grooved processing. A good contact state between the films 2A and 2B and the air can be obtained through the grooves.
  • the overlapped films 2A and 2B are heat-treated at a temperature equal to or lower than the melting point of the resin constituting the film 2 and about 30 ° C. lower than the melting point while being gripped at both ends by clips (not shown) of the tenter 41. It is (heat-set) and becomes a biaxially stretched nylon film 3 (hereinafter also referred to as film 3) having stable physical properties, and is sent to the next winding step.
  • the heat treatment temperature in the second heat treatment (heat setting) is preferably 190 ° C. or higher and 215 ° C. or lower.
  • the film shrinkage rate tends to increase and the risk of delamination tends to increase.
  • the upper limit is exceeded, the bowing phenomenon at the time of heat setting increases and the distortion of the film increases.
  • the density tends to be too high, and the degree of crystallinity tends to be too high, making the film difficult to deform.
  • the relaxation rate at this time is preferably 15% or less. A strong tension is applied to the films 2A and 2B in the heating furnace 42 by the tension control device 50 located on the downstream side.
  • the film 3 heat-set in the second heat treatment step is wound as films 3A and 3B on the two winding rolls 62 via the guide roll 61 via the tension control device 50.
  • the biaxially stretched nylon film (ONy film) of this embodiment is formed by biaxially stretching a raw film made of nylon resin as a raw material and heat-fixing it at a predetermined temperature.
  • Nylon 6, nylon 8, nylon 11, nylon 12, nylon 6,6, nylon 6,10, nylon 6,12, etc. can be used as the nylon resin as the raw material.
  • Nylon 6 (hereinafter also referred to as Ny6) is preferably used from the viewpoint of physical properties, melting characteristics, and ease of handling.
  • the chemical formula of Ny6 is shown in the following formula (1).
  • the number average molecular weight of the raw material nylon resin is preferably 15000 or more and 30000 or less, and more preferably 22000 or more and 24000 or less. If the number average molecular weight of the nylon resin is less than 15000, impact strength and tensile strength may be insufficient. If it exceeds 30000, a load in extrusion molding is excessively applied and it is difficult to obtain an appropriate extrusion amount. Efficiency may be reduced.
  • the maximum value of the three-dimensional birefringence ⁇ n in the range of 70 ° to 90 ° in the angle distribution plane when measured by tilting the ONy film by 30 ° is required to be 0.004 or less. It is.
  • the maximum value of the three-dimensional birefringence ⁇ n exceeds 0.004, the deep drawability of the resulting film is deteriorated. Further, if it exceeds 0.010, the deep drawability of the resulting film is greatly deteriorated.
  • the maximum value of the three-dimensional birefringence ⁇ n is preferably 0.003 or less, particularly preferably 0.002 or less, from the viewpoint of deep drawability.
  • the maximum value of the three-dimensional birefringence ⁇ n in the range of 70 ° to 90 ° in the angle distribution plane was determined by using the RETS-100 manufactured by Otsuka Electronics Co., Ltd., and the measurement surface of the film was inclined by 30 ° with the measurement light. It was calculated by arranging and measuring so as to be in a state and analyzing the angular distribution of the obtained three-dimensional birefringence (specifically, dividing the value indicating retardation (retardation) by the film thickness). It is the maximum value of the thing.
  • the measurement sample tilted by 30 ° clearly shows that the difference in the three-dimensional refractive index by the biaxial stretching method appears more significantly, and there is a correlation between the molecular orientation of the film and the drawability. This is because it can be shown.
  • Measurement is performed at a wavelength of 589 nm.
  • the angle ranges for which the maximum value of the three-dimensional birefringence ⁇ n of this embodiment is calculated are 70 ° to 90 °, 90 ° to 110 °, 250 ° to 270 °, and 270 ° to 290. It is in the range of °.
  • in-plane range of 70 ° to 90 ° it is abbreviated as “in-plane range of 70 ° to 90 °”.
  • the tubular method is adopted as the biaxial stretching method, but a tenter method may be used.
  • the stretching method may be simultaneous biaxial stretching or sequential biaxial stretching.
  • Example and a comparative example demonstrate this invention further in detail, this invention is not limited at all by these examples.
  • Example of the first embodiment the properties in each example (three-dimensional refractive index of biaxially stretched nylon film, plane orientation and plane refractive index ratio, and deep drawability of laminate film) were evaluated by the following methods.
  • the laminate film was cut to prepare a 120 ⁇ 80 mm strip piece as a sample. Using a 33 x 55 mm rectangular mold, press it with a surface pressure of 0.1 MPa, change the molding depth from 0.5 mm to 0.5 mm, and cold mold each 10 samples. (One-stage pull-in molding). The molding depth at which no pinhole was generated in any of the 10 samples in the aluminum foil was taken as the limit molding depth, and the molding depth was shown as an evaluation value. In addition, confirmation of the pinhole confirmed the transmitted light visually.
  • B The limit molding depth is 5 mm or more and less than 7 mm.
  • C The limit molding depth is less than 5 mm.
  • the biaxial stretching in the MD direction and the TD direction was performed by the tubular method by expanding and taking up with a pair of downstream pinch rolls 14.
  • the magnification during this stretching was 3.0 times in the MD direction and 3.3 times in the TD direction.
  • First heat treatment step and second heat treatment step Next, as shown in FIG. 1, the film 2 is subjected to heat treatment at a temperature of 170 ° C. by the first heat treatment device 20, and then passed through the separation device 30 and then heat treated at a temperature of 205 ° C. by the second heat treatment device 40. And heat fixed.
  • Windding process Next, as shown in FIG.
  • the film 3 heat-set in the second heat treatment step is wound as two films 3 ⁇ / b> A and 3 ⁇ / b> B on two winding rolls 62 via a guide roll 61 via a tension control device 50.
  • a biaxially stretched nylon film was produced.
  • the thickness of the obtained biaxially stretched nylon film was 15 ⁇ m.
  • the obtained biaxially stretched nylon film was measured for three-dimensional refractive index, degree of plane orientation, and plane refractive index ratio. The obtained results are shown in Table 1.
  • Example 1-2 to 1-8 Comparative Examples 1-1 to 1-3
  • production conditions stress setting temperature, thickness
  • biaxially stretched nylon films and laminate films were produced.
  • the obtained biaxially stretched nylon film was measured for three-dimensional refractive index, degree of plane orientation, and plane refractive index ratio. The obtained results are shown in Table 1. Further, the deep drawability of the obtained laminate film was evaluated. The obtained results are shown in Table 1.
  • Comparative Examples 1-1 to 1-3 biaxially stretched nylon films obtained by the production method shown in Table 1 were obtained, and as in Example 1-1, the three-dimensional refractive index, the degree of plane orientation, and The plane refractive index ratio was measured. The obtained results are shown in Table 1. Further, a laminate film was produced using the biaxially stretched nylon films of Comparative Examples 1-1 to 1-3, and the deep drawability was evaluated in the same manner as in Example 1-1. The obtained results are shown in Table 1.
  • the characteristics in each example were evaluated by the following methods.
  • the biaxial stretching in the MD direction and the TD direction was performed by the tubular method by expanding and taking up with a pair of downstream pinch rolls 14.
  • the magnification during this stretching was 3.0 times in the MD direction and 3.25 times in the TD direction.
  • First heat treatment step and second heat treatment step Next, as shown in FIG. 1, the film 2 is subjected to heat treatment at a temperature of 170 ° C. by the first heat treatment apparatus 20, and then passed through the separation apparatus 30 and then heat treated at a temperature of 210 ° C. by the second heat treatment apparatus 40. And heat fixed.
  • Windding process Next, as shown in FIG.
  • the film 3 heat-set in the second heat treatment step is wound as two films 3 ⁇ / b> A and 3 ⁇ / b> B on two winding rolls 62 via a guide roll 61 via a tension control device 50.
  • a biaxially stretched nylon film was produced.
  • the thickness of the obtained biaxially stretched nylon film was 15 ⁇ m.
  • the maximum value of the three-dimensional birefringence ⁇ n in the in-plane range of 70 ° to 90 ° of the obtained biaxially stretched nylon film was measured.
  • the obtained results are shown in Table 2.
  • FIG. 2 shows an angle distribution diagram of three-dimensional birefringence measured by tilting a biaxially stretched nylon film by 30 °.
  • Example 2-2 to 2-5 Comparative Examples 2-1 to 2-5
  • production conditions stress setting temperature, thickness
  • biaxially stretched nylon films and laminate films were produced.
  • the maximum value of the three-dimensional birefringence ⁇ n in the in-plane range of 70 ° to 90 ° of the obtained biaxially stretched nylon film was measured.
  • the obtained results are shown in Table 2.
  • FIG. 3 shows an angle distribution diagram of three-dimensional birefringence of the biaxially stretched nylon film in Example 2-2. Further, the deep drawability of the obtained laminate packaging material was evaluated. The obtained results are shown in Table 2.
  • Comparative Examples 2-1 to 2-5 biaxially stretched nylon films obtained by the production method shown in Table 2 were obtained, and in the in-plane range of 70 ° to 90 ° as in Example 2-1.
  • the maximum value of the three-dimensional birefringence ⁇ n was measured.
  • the obtained results are shown in Table 2.
  • FIGS. 4 and 5 show angular distribution diagrams of three-dimensional birefringence of the biaxially stretched nylon films in Comparative Example 2-1 and Comparative Example 2-2, respectively.
  • a laminate film was produced using the biaxially stretched nylon films of Comparative Examples 2-1 to 2-5, and the deep drawability was evaluated in the same manner as in Example 2-1. The obtained results are shown in Table 2.
  • the biaxially stretched nylon film of the present invention is, for example, for industrial fields (such as lithium battery packaging materials mounted on electric vehicles, tablet terminal devices, smartphones, etc.), pharmaceutical fields (such as PTP packaging materials), and household goods. It can be suitably used as a packaging material that particularly requires pinhole resistance, such as packaging materials in the field (such as refill packaging for liquid detergents) and foods.
  • the laminate packaging material of the present invention can be suitably used as a packaging material for cold molding that requires particularly excellent deep drawability.

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PCT/JP2013/057203 2012-03-19 2013-03-14 二軸延伸ナイロンフィルム、ラミネートフィルム、ラミネート包材および二軸延伸ナイロンフィルムの製造方法 WO2013141135A1 (ja)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014141963A1 (ja) * 2013-03-14 2014-09-18 出光ユニテック株式会社 二軸延伸ナイロンコーティングフィルム、ラミネート包材および成型体
WO2014156556A1 (ja) * 2013-03-28 2014-10-02 出光ユニテック株式会社 二軸延伸ナイロンフィルム、ラミネートフィルムおよび成形体
JP2015107586A (ja) * 2013-12-04 2015-06-11 出光ユニテック株式会社 延伸ナイロンフィルム、多層フィルム、包装材、電池および延伸ナイロンフィルムの製造方法
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

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JPH03126523A (ja) * 1989-10-11 1991-05-29 Idemitsu Petrochem Co Ltd 二軸延伸フィルムの製造方法
JP2008045016A (ja) * 2006-08-14 2008-02-28 Idemitsu Unitech Co Ltd 二軸延伸ナイロンフィルム、ラミネート包材及び二軸延伸ナイロンフィルムの製造方法

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JPH03126523A (ja) * 1989-10-11 1991-05-29 Idemitsu Petrochem Co Ltd 二軸延伸フィルムの製造方法
JP2008045016A (ja) * 2006-08-14 2008-02-28 Idemitsu Unitech Co Ltd 二軸延伸ナイロンフィルム、ラミネート包材及び二軸延伸ナイロンフィルムの製造方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014141963A1 (ja) * 2013-03-14 2014-09-18 出光ユニテック株式会社 二軸延伸ナイロンコーティングフィルム、ラミネート包材および成型体
WO2014156556A1 (ja) * 2013-03-28 2014-10-02 出光ユニテック株式会社 二軸延伸ナイロンフィルム、ラミネートフィルムおよび成形体
JP2015107586A (ja) * 2013-12-04 2015-06-11 出光ユニテック株式会社 延伸ナイロンフィルム、多層フィルム、包装材、電池および延伸ナイロンフィルムの製造方法
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

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