Abstract: The present invention is to provide a method for producing a biaxially oriented polyester film that is superior in mechanical properties, transparency, and heat resistance, and at the same time, superior in secondary processing suitability and printing appearance. Disclosed is a biaxially oriented polyester film, having at least one surface satisfying the following requirements (1) and (2), and the film satisfying the following requirements (3) and (4). (1) A maximum peak height roughness (SRp) is 1.2 ?m to 1.6 ?m. (2) An arithmetic average roughness (SRa) is 0.024 ?m to 0.045 ?m. (3) A tensile strength in a longitudinal direction and a width direction is 180 MPa to 300 MPa. (4) A haze is 7% or less.

Abstract: Provided is a laminated film having a base layer (A) mainly composed of polypropylene-based resin, a surface layer (B) on one surface of the base layer (A), and a surface layer (C) on the other surface, and an inorganic thin film layer further laminated on the surface layer (B) and an organic resin layer (E) in this order, and satisfying the following (a) to (d): (a) a deposition amount of the organic resin layer (E) is 0.10 g/m2 or larger and 0.50 g/m2 or smaller; (b) a Martens hardness when a surface on the organic resin layer side of the laminated film is measured with a test force of 0.1 mN is 248 N/mm2 or less; (c) a haze of the laminated film is 6% or less; and (d) an oxygen permeability of the laminated film in an environment of 23° C. and 65% RH is 10 mL/m2·d·MPa or less.

Abstract: The invention provides a laminated film that can form a laminated structure mainly composed of a polypropylene film and composed of substantially a single resin species having a low environmental load, and has gas barrier properties required for a packaging material when an inorganic thin film layer is laminated. The laminated film for forming an inorganic thin film layer, includes a substrate layer mainly composed of a polypropylene-based resin; and a coating layer laminated on at least one surface of the substrate layer, wherein (I) the laminated film has a heating elongation rate at 130° C. of 10% or less in both MD and TD directions, (II) a total of a maximum peak height (Rp) and maximum valley depth (Rv) of the coating layer-side surface measured with a scanning probe microscope is 30.0 nm or less, and (III) an amount of adhesion of the coating layer is 0.10-0.50 g/m2.

Abstract: Provided is a biaxially oriented polypropylene film that has high stiffness, has excellent heat resistance at a high temperature of 150° C., easily maintains a bag shape when being made into a packaging bag, and has less pitch shift during printing or fewer wrinkles in a sealed portion when being heat-sealed. A biaxially oriented polypropylene film, wherein a maximum elongation of the biaxially oriented polypropylene film at 150° ° C. or lower measured by a thermomechanical analyzer (TMA) is not larger than 1.5 mm in a longitudinal direction and not larger than 0.1 mm in a width direction, and a heat shrinkage rate of the biaxially oriented polypropylene film at 150° C. is not higher than 10% in the longitudinal direction and not higher than 30% in the width direction.

Abstract: The invention provides a laminated film which includes a substrate film, and a coating layer including a polyvinyl alcohol-based copolymer and an inorganic lamellar compound on at least one surface of the substrate film. The laminated film satisfies requirements (a) to (d): (a) the substrate film is a stretched film containing a propylene-based resin; (b) an attached amount of the coating layer is 0.10-0.50 g/m2; (c) in a total reflection infrared absorption spectrum of the laminated film, a ratio (P1/P2) of a peak intensity (P1) having an absorption maximum in a domain of 1040±10 cm?1 to a peak intensity (P2) having an absorption maximum in a domain of 3300±10 cm?1 is within a range of 3.0 to 25.0; and (d) a Martens hardness of a coating layer-side surface of the laminated film measured with a test force of 0.1 mN is 248 N/mm2 or less.

Abstract: The invention provides a laminated film that includes a substrate layer (A) mainly composed of a polypropylene-based resin, a surface layer (B) on at least one surface of the substrate layer (A), and a coating layer laminated on the surface layer (B), wherein the laminated film satisfies the following requirements (I) to (III): (I) (a)/(b)?7.00 is satisfied, where (a) is Martens hardness of a coating layer-side surface measured with a test force of 0.1 mN, and (b) is Martens hardness of the coating layer-side surface measured with a test force of 7 mN; (II) a total of a maximum peak height (Rp) and maximum valley depth (Rv) of the coating layer-side surface measured with a scanning probe microscope is 30.0 nm or less; and (III) an oxygen permeation rate measured under conditions of 23° C.×65% RH is 100 cc/m2/day/atm or more and 1200 cc/m2/day/atm or less.

Abstract: The invention provides a biaxially-oriented polypropylene film that contains a base layer (A) comprising a polypropylene resin as a main component, a surface layer (B) provided at one side of the base layer (A), and a surface layer (C) provided at one side of the base layer (A) opposite to the surface layer (B), wherein the surface layer (B) has a wetting tension of 38 mN or more, a surface resistance value of 14.0 Log? or more, an arithmetic average roughness (Ra) of 3.0-5.5 nm, a Martens hardness of 248 N/mm2 or less, and a center plane average surface roughness (SRa) of 0.010-0.026 µm, and the surface layer (C) has a center plane average surface roughness (SRa) of 0.020 µm or more and a Martens hardness of 270 N/mm2 or more.

Abstract: The invention provides a laminated film comprising a surface layer (B) at a surface on one side of a substrate layer (A) comprising a polypropylenic resin as primary constituent, and a surface layer (C) at a surface on the other side of the substrate layer (A), and in which an inorganic thin film layer (D) is further laminated over the surface layer (B), the laminated film being characterized in that haze of the laminated film is not greater than 5%, and in that a surface on the inorganic thin film layer (D) side of the laminated film satisfies (I) through (IV), below; (I) arithmetic mean roughness (Ra) by a scanning probe microscope is 4.5-9.0 nm; (II) Martens hardness is not greater than 310 N/mm2; (III) water contact angle is not greater than 75°; and (IV) center plane average roughness (SRa) by a three-dimensional profilometer is 0.010-0.040 ?m.

Abstract: Provided is a biaxially oriented polypropylene film that has high stiffness, has excellent heat resistance at a high temperature of 150° C., easily maintains a bag shape when being made into a packaging bag, and has less pitch shift during printing or fewer wrinkles in a sealed portion when being heat-sealed. A biaxially oriented polypropylene film, wherein a stress at 5% elongation (F5) at 23° C. of the biaxially oriented polypropylene film is not lower than 40 MPa in a longitudinal direction and not lower than 160 MPa in a width direction, and a heat shrinkage rate at 150° C. of the biaxially oriented polypropylene film is not higher than 7% in the longitudinal direction and not higher than 16% in the width direction.

Abstract: Provided is a biaxially oriented polypropylene film that can enhance function of having high stiffness, having excellent heat resistance at a high temperature of 150° C., easily maintaining a bag shape when being made into a packaging bag, having less pitch shift during printing or fewer wrinkles in a sealed portion when being heat-sealed, and improving lamination strength. A biaxially oriented polypropylene film comprising a base layer (A), an intermediate layer (B), and a surface layer (C), wherein a stress at 5% elongation (F5) at 23° C. of the biaxially oriented polypropylene film is not lower than 40 MPa in a longitudinal direction and not lower than 160 MPa in a width direction, and a heat shrinkage rate at 150° C. of the biaxially oriented polypropylene film is not higher than 10% in the longitudinal direction and not higher than 30% in the width direction.

Abstract: The present invention provides a biaxially-oriented polypropylene film having high stiffness, excellent heat resistance to high temperature as high as 150° C., easiness of maintaining its bag shape when made into a packaging bag, less printing pitch shift at the time of printing, and less wrinkles of heat sealed part when heat sealed. The biaxially-oriented polypropylene film satisfies the following formulae (1) to (3): (1) a half width of a peak derived from an oriented crystal in a width direction of the film in an azimuth dependence of a (110) plane of polypropylene ?-type crystal through measurement with wide-angle X rays diffraction is 25° or less; (2) the film has a heat-shrinkage ratio at 150° C. of 10% or less in a longitudinal direction and 24% or less in a width direction; and (3) the film has a tensile elongation at break at 23° C. of 195% or more in the longitudinal direction.

Abstract: Provided is a biaxially oriented polypropylene film that has high stiffness, has excellent heat resistance at a high temperature of 150° C., easily maintains a bag shape when being made into a packaging bag, and has less pitch shift during printing or fewer wrinkles in a sealed portion when being heat-sealed. A biaxially oriented polypropylene film, wherein a half width of a peak derived from an oriented crystal in a width direction in azimuth dependence of a (110) plane of polypropylene ?-type crystal obtained by wide-angle X-ray diffraction measurement is not larger than 27°, and a tan ? area in the width direction obtained from a ratio (E?E?) of a storage elastic modulus (E?) to a loss elastic modulus (E?) obtained by dynamic viscoelasticity measurement is not smaller than 0.2 and not larger than 0.4.

Abstract: The invention provides a biaxially oriented polypropylene film, wherein a relationship between a loop stiffness stress (S [mN]) in a longitudinal direction and a thickness (t [?m]) satisfies the formula S?0.00020×t3, a relationship between a loop stiffness stress (S [mN]) in a width direction and the thickness (t [?m]) satisfies the formula S?0.0010×t3, and a heat shrinkage rate of the biaxially oriented polypropylene film at 150° C. is not higher than 10% in the longitudinal direction and not higher than 30% in the width direction, a heat shrinkage rate of the biaxially oriented polypropylene film at 120° C. is not higher than 2.0% in the longitudinal direction and not higher than 5.0% in the width direction, and the heat shrinkage rate at 120° C. in the longitudinal direction is lower than the heat shrinkage rate at 120° C. in the width direction.

Abstract: Provided is a biaxially oriented polypropylene film that has high stiffness, has excellent heat resistance at a high temperature of 150° C., easily maintains a bag shape when being made into a packaging bag, and has less pitch shift during printing or fewer wrinkles in a sealed portion when being heat-sealed. A biaxially oriented polypropylene film, wherein a stress at 5% elongation (F5) of the biaxially oriented polypropylene film at 23° C. is not lower than 40 MPa in a longitudinal direction and not lower than 160 MPa in a width direction, and a heat shrinkage rate of the biaxially oriented polypropylene film at 150° C. is not higher than 10% in the longitudinal direction and not higher than 30% in the width direction.

Abstract: Provided is a biaxially oriented polypropylene film that has high stiffness, has excellent heat resistance at a high temperature of 150° C., easily maintains a bag shape when being made into a packaging bag, and has less pitch shift during printing or fewer wrinkles in a sealed portion when being heat-sealed. A biaxially oriented polypropylene film, wherein a maximum elongation of the biaxially oriented polypropylene film at 150° C. or lower measured by a thermomechanical analyzer (TMA) is not larger than 1.5 mm in a longitudinal direction and not larger than 0.1 mm in a width direction, and a heat shrinkage rate of the biaxially oriented polypropylene film at 150° C. is not higher than 10% in the longitudinal direction and not higher than 30% in the width direction.

Abstract: The present invention is to provide a method for producing a biaxially oriented polyester film that is superior in mechanical properties, transparency, and heat resistance, and at the same time, superior in secondary processing suitability and printing appearance. Disclosed is a biaxially oriented polyester film, having at least one surface satisfying the following requirements (1) and (2), and the film satisfying the following requirements (3) and (4). (1) A maximum peak height roughness (SRp) is 1.2 ?m to 1.6 ?m. (2) An arithmetic average roughness (SRa) is 0.024 ?m to 0.045 ?m. (3) A tensile strength in a longitudinal direction and a width direction is 180 MPa to 300 MPa. (4) A haze is 7% or less.

Abstract: The invention provides a biaxially oriented polypropylene film with a storage elastic modulus (E?-23) of at least 2.0 GPa in a longitudinal direction and at least 6.0 GPa in a width direction, a storage elastic modulus E? (E?-80) of at least 1.0 GPa in the longitudinal direction and at least 3.0 GPa in the width direction, a ratio (E?-80/E?-23) of E?-80 to E?-23 of at least 0.4 in both the longitudinal direction and the width direction, a heat shrinkage rate at 150° C. of not higher than 10% in the longitudinal direction and not higher than 30% in the width direction, a heat shrinkage rate at 120° C. of not higher than 2.0% in the longitudinal direction and not higher than 5.0% in the width direction, and a heat shrinkage rate at 120° C. in the longitudinal direction that is lower than the heat shrinkage rate at 120° C. in the width direction.

Abstract: It is provided that the polyester-based film which has excellent aroma retaining property and corrosion resistance, and can be adhered to a metal plate at a low temperature. A polyester-based film for laminating a metal plate formed from a composition containing a polyester-based resin mainly consisting of ethylene terephthalate, wherein the polyester-based resin has a total content of ethylene terephthalate units and diethylene terephthalate units of not less than 95% by mol and not more than 98% by mol, in 100% by mol of the total constituent units of the polyester, and the content of indeterminate inorganic fine particles is 0.5 to 2.0% by mass, in 100% by mass of the composition.

Abstract: It is provided that a polyester-based film for laminating a metal plate having corrosion resistance, being capable of being adhered to a metal plate at a relatively low temperature, having excellent can-making properties, and easily repairing a joint part after can making. A polyester-based film for laminating a metal plate constituted by two layers of Layer A and Layer B, wherein a resin constituting Layer A is a polyester-based resin having a total content of ethylene terephthalate units and diethylene terephthalate units of not less than 95% by mol and not more than 98% by mol, in 100% by mol of total constituent units of the polyester, and a resin constituting Layer B comprises 80 to 100% by mass of a polyester-based resin (B1) mainly including ethylene terephthalate and 0 to 20% by mass of a polyester-based resin (B2) having composition different from composition of the polyester-based resin (B1).

Abstract: It is provided that a polyester film containing a polyester resin obtained by recycling PET bottles and having high lamination strength and slight unevenness in thickness. A biaxially stretched polyester film comprising 50 wt. % or more and 95 wt. % or less of a polyester resin obtained by recycling PET bottles, wherein the content of an isophthalic acid component in all dicarboxylic acid components in the entire polyester resin composing the polyester film is 0.5 mol % or more and 5.0 mol % or less, and the polyester satisfy the specific intrinsic viscosity, the specific thermal shrinkage rate, the specific refractive index in the thickness direction, and the specific unevenness in thickness.