Abstract: The invention provides a gas barrier laminate film containing a gas barrier layer laminated on at least one surface of the biaxially stretched polybutylene terephthalate film. The biaxially stretched polybutylene terephthalate film has not less than 90% by mass of polybutylene terephthalate, and the plane center average roughness of a 500 nm×500 nm square region of the biaxially stretched polybutylene terephthalate film does not contain a protrusion resulting from inert particles in at least one surface of the biaxially stretched polybutylene terephthalate film is not more than 1.0 nm. The invention also provides a method of preparing the gas barrier laminate film.

Abstract: The invention provides a biaxially stretched polybutylene terephthalate film comprising 60 layers or more, of which each layer is composed of a polyester resin composition containing 60% by mass or more of polybutylene terephthalate in the entire thickness direction of the film, wherein temperatures providing maximum peaks of tan ? as determined by the dynamic viscoelasticity measurement at 10 Hz of measurement frequency are 60-100° C. in both the MD and TD directions, and maximum peak values of tan ? are 0.080-0.15 in both the MD and TD directions. The invention also provides a method of preparing the multi-layered biaxially stretched polybutylene terephthalate film.

Abstract: It is provided that a biaxially stretched polyester film that is excellent in linearly tearing property over the full width of the film, moisture resistance, pinhole resistance, and bag breakage resistance while maintaining film transparency, and in particular, and that can be particularly suitably used for retort pouch packaging and packaging for water containing material.

Abstract: It is provided that a gas barrier film simultaneously satisfying high gas barrier property, excellent pinhole resistance, bag breakage resistance and linearly tearing property, and particularly suitably used for retort pouch packaging, packaging for water containing material, and pharmaceutical packaging applications.

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 biaxially stretched polyester film suitable for uses for which nylon films and other flexible films have conventionally been used and a method for producing the film. A biaxially stretched polyester film made of a polyester resin composition (A) containing not less than 60 mass % of polybutylene terephthalate and having yield stress in a MD of not more than 70 MPa, yield stress in a TD of not more than 70 MPa, rupture strength in the MD of not less than 160 MPa, rupture strength in the TD of not less than 160 MPa, and rupture elongation in the MD and TD of not less than 100%.

Abstract: It is provided that a biaxially stretched polybutylene terephthalate film which has all of excellent thickness precision, excellent pin-hole resistance and excellent bag rupture resistance and can achieve excellent barrier properties when a gas barrier layer is provided thereon, and manufacturing method therefor. A biaxially stretched polybutylene terephthalate film, wherein the biaxially stretched polybutylene terephthalate film containing not less than 90% by mass of polybutylene terephthalate, and the plane center average roughness of a 500-nm square region that does not contain a protrusion resulting from inert particles in at least one surface of the film is not more than 1.0 nm.

Abstract: The present invention relate to a biaxially stretched polybutylene terephthalate film comprising a polyester resin composition containing 60% by mass or more of polybutylene terephthalate, wherein a peak temperature of tan ? as determined by the dynamic viscoelasticity measurement at 10 Hz of measurement frequency is 60° C. or more and 100° C. or less in both the MD direction and the TD direction, and a peak value of tan ? is 0.080 or more and 0.15 or less in both the MD direction and the TD direction. The biaxially stretched polybutylene terephthalate film of the present invention can be suitably used for converting films, films for food package such as a retort pouch package and a moisture food package, draw films and the like.

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.

Abstract: It is provided that a biaxially stretched polyester film suitable for uses for which nylon films and other flexible films have conventionally been used and a method for producing the film. A biaxially stretched polyester film made of a polyester resin composition (A) containing not less than 60 mass % of polybutylene terephthalate and having yield stress in a MD of not more than 70 MPa, yield stress in a TD of not more than 70 MPa, rupture strength in the MD of not less than 160 MPa, rupture strength in the TD of not less than 160 MPa, and rupture elongation in the MD and TD of not less than 100%.

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.

Abstract: A heat sealable polypropylene resin laminate film having good toughness and heat sealing strength and energy sufficient for packaging heavy goods, mainly fruits and vegetables, and a package made of such film, is a laminate film having three or more layers, a substrate layer made of a crystalline polypropylene resin, a heat sealable layer having a melting point of not more than 150° C., and an intermediate layer. The product of the tensile modulus of elasticity (GPa) in both orthogonal directions of the film is 3.1-6.0 (GPa)2, and the heat sealing energy is not less than 11N·cm/15 mm when the film is sealed, such that the heat sealing strength of the film is not less than 8N/15 mm.

Abstract: The present invention provides a method of measuring the activity of neprilysin, etc. More specifically, the present invention provides a method of measuring the activity of neprilysin in nerve cells; a method of screening a protein, a peptide or a compound enhancing the activity or expression of neprilysin in nerve cells by measuring the activity of neprilysin; a method of enhancing the activity or expression of neprilysin; and so on. Thus, the compound enhancing the activity and/or expression of neprilysin, which is obtained by the screening method characterized by using the method of measuring the activity of neprilysin in accordance with the present invention, is useful as a preventive and/or therapeutic agent for Alzheimer's disease. The method of measuring the activity of the present invention can be used for presymptomatic diagnosis of Alzheimer's disease.

Abstract: The present invention provides a method of measuring the activity of neprilysin, etc. More specifically, the present invention provides a method of measuring the activity of neprilysin in nerve cells; a method of screening a protein, a peptide or a compound enhancing the activity or expression of neprilysin nerve cells by measuring the activity of neprilysin; a method of enhancing the activity or expression of neprilysin; and so on. Thus, the compound enhancing the activity and/or expression of neprilysin, which is obtained by the screening method characterized by using the method of measuring the activity of neprilysin in accordance with the present invention, is useful as a preventive and/or therapeutic agent for Alzheimer's disease. The method of measuring the activity of the present invention can be used for presymptoms diagnosis of Alzheimer's disease.

Abstract: A heat sealable polypropylene resin laminate film having good toughness and heat sealing strength and energy sufficient for packaging heavy goods, mainly fruits and vegetables, and a package made of such film, is a laminate film having three or more layers, a substrate layer made of a crystalline polypropylene resin, a heat sealable layer having a melting point of not more than 150° C., and an intermediate layer. The product of the tensile modulus of elasticity (GPa) in both orthogonal directions of the film is 3.1-6.0 (GPa)2, and the heat sealing energy is not less than 11N·cm/15 mm when the film is sealed, such that the heat sealing strength of the film is not less than 8N/15 mm.