Abstract: [Problem] To provide a cavity-containing polyester film which exhibits excellent concealability, degree of whiteness and printability, and which is still free from the occurrence of a wrinkle, distortion and the like in cases where, for example, the cavity-containing polyester film is used for a roll label, and a label is delivered therefrom or wound around a product. [Solution] A cavity-containing polyester film which comprises a layer A that internally contains a cavity, and layers B that are arranged on both surfaces of the layer A, wherein: the layer A is formed of a composition A that contains a polyester resin A and a polypropylene resin; the layers B are formed of a composition B that contains inorganic particles and a polyester resin B; and the amount of self-weight deflection of the film is from 60 mm to 100 mm at least in one direction.

Abstract: This long-fiber woven fabric comprises long fibers formed by two-component conjugate spinning from poly(ethylene terephthalate) and a copolyester, and has an apparent density of 0.1-0.25 g/cc and a recovery from 50% elongation of 55% or greater.

Abstract: A technical problem to be solved by the present invention is to provide a non-coated fabric for airbags and a coated fabric for airbags that are both less likely to have yarn slippage after being sewn, and that can be compactly stored; and airbags using these fabrics. The fabric for airbags according to the present invention is a non-coated fabric for airbags or a coated fabric for airbags that both have a crimp ratio of 12% or more in the warp direction, and a crimp ratio of 61 or less in the weft direction.

Abstract: Provided is a laminate that is useful as a temporary support for producing a large-area, high-definition, flexible electronic device, the laminate having stably low adhesive strength between a heat-resistant polymer film and an inorganic substrate even in the case of a large surface area, and having few blister defects. This laminate has an inorganic substrate, a silane coupling agent layer that includes amino groups, and a heat-resistant polymer film in the stated order, the laminate being characterized in that the elemental nitrogen component ratio in an inorganic-substrate-side peel surface after the heat-resistant polymer film has been peeled from the inorganic substrate at 90° is greater than 3.5 at % and no greater than 11 at %.

Abstract: An object of the present invention is to more conveniently provide a copolyester for a polyester film which exhibits excellent dimensional stability and in particular excellent dimensional stability against environmental changes in, for example, temperature and humidity, and has a small film elongation percentage at 110° C. A copolyester of the present invention comprises: (A) an aromatic dicarboxylic acid component; (B) an alkylene glycol component; and (C1) a dimer acid component and/or (C2) a dimer diol component, wherein the copolyester contains, with reference to a molar number of a total dicarboxylic acid component, 0.5 to 3.5 mol % of the dimer acid component (C1) and/or 0.3 to 5.0 mol % of the dimer diol component (C2).

Abstract: The present invention aims to provide an inorganic reinforced polyamide resin composition that achieves incompatible mechanical properties, i.e., high stiffness and impact resistance (high toughness), has excellent flowability, and further has excellent long-term wear resistance (high sliding performance) to an inorganic fiber reinforcing material used as a sliding counterpart material. An inorganic reinforced polyamide resin composition containing: 10 to 55 mass% of a crystalline polyamide resin (A); 1 to 20 mass% of an amorphous polyamide resin (B); 40 to 70 mass% of an inorganic reinforcing material (C); and 0.5 to 10 mass% of a modified polyolefin resin (D) having a reactive functional group that is capable of reacting with a terminal group and/or a main-chain amide group of a polyamide resin, characterized in that a blending mass ratio between the components (A) and (D) satisfies 0.01 ? (D)/(A) ? 0.2, and a blending mass ratio between the components (A) and (B) satisfies 0.05 ? (B)/(A) ? 0.7.

Abstract: [PROBLEMS] It is an object of the present invention to provide a heat-shrinkable polyester-based film roll which can reduce defects caused during a heat shrinking step due to the variation of a heat shrinkage rate in the heat-shrinkable polyester-based film roll having the longitudinal direction as the main shrinkage direction, specifically, defects of the film when covering an object by a wrap-around method and heat-shrunk. [SOLUTIONS] A heat-shrinkable polyester-based film roll, comprising a core; and a heat-shrinkable polyester-based film having a longitudinal direction as a main shrinkage direction that is wound around the core; wherein the film (roll) satisfy predetermined polyester composition, and all samples cutout every about 100 m have a heat shrinkage rate measured by immersion in hot water of 90° C. for 10 seconds of 30% or more and 80% or less and ±3% or less of an average in the longitudinal direction.

Abstract: A method for producing polyester resin containing an ethylene terephthalate structural unit of not less than 85 mol%, the method comprising: a melt-polymerization step of continuously performing melt-polymerization in two or more polymerization vessels by using an aluminium compound and a phosphorus compound as a polymerization catalyst; and a solid phase polymerization step of performing solid phase polymerization after the melt-polymerization step, wherein a polymerization in a final polymerization vessel of the melt-polymerization step satisfies a condition represented by the following formula: 410?T*RT*(P/Al)?580, wherein T represents a temperature (°C) in the final polymerization vessel, RT represents residence time (hour) in the final polymerization vessel, and P/Al represents a molar ratio of phosphorus element to aluminium element in the polyester resin.

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: A polyolefin-based resin film containing (a) 90 to 97 parts by weight of at least one polyolefin-based resin selected from a propylene-ethylene block copolymer and a propylene-? olefin random copolymer and (b) 3 to 10 parts by weight of an ethylene-propylene copolymer elastomer, wherein the propylene-? olefin random copolymer is present in an amount of 0 to 50% by weight relative to the total amount of the propylene-ethylene block copolymer and the propylene-? olefin random copolymer, and the polyolefin-based resin film has a thermal shrinkage ratio in a longitudinal direction of 3% or more and 20% or less, a thermal shrinkage ratio in a rectangular direction to a width direction of 1% or less, and a yield stress in the longitudinal direction of 150 MPa or more and 250 MPa or less.

Abstract: A polyester resin composition contains a polyester resin A containing 50 to 100 mass % of a polybutylene terephthalate resin and 0 to 50 mass % of a polyethylene terephthalate resin. The polyester resin composition further contains a predetermined amount of a metal organic acid salt B, which is either or both of an alkali metal organic acid salt and an alkaline earth metal organic acid salt; a predetermined amount of a styrenic resin C; and a predetermined amount of an inorganic filler D. The amount of linear oligomers of polybutylene terephthalate or the amount of the linear oligomers of polybutylene terephthalate and linear oligomers of polyethylene terephthalate is less than or equal to 1000 mg/kg. Inorganic filler D has an average particle size of 0.05 to 3 ?m.

Abstract: Provided is a biaxially oriented polypropylene film that has high stiffness and can easily retain a bag shape when made into a packaging bag even if the film is made thinner, and at the same time, that can maintain water vapor barrier properties even if the film is made thinner, and has few wrinkles in and around the sealed portion when heat-sealed to make a packaging body. The biaxially oriented polypropylene film satisfies the following (1) and (2): (1) a half width of a peak derived from an oriented crystal in a width direction in angular dependency of a (110) plane of polypropylene?-type crystal obtained by wide-angle X-ray diffraction measurement is 26° or smaller; (2) the ratio of (III) to the total of a crystalline component (I), a restrained amorphous component (II), and an unrestrained amorphous component (III) classified by pulse NMR according to solid-echo method is 7% or lower.

Abstract: The present invention provides a polyester film suitable for use as a sealant, which not only has high heat sealing strength, but also is less liable to adsorb various organic compounds, and has a less shrinkage in heating and high tensile strength. Further, the present invention provides a laminate comprising at least one layer of the polyester film, and a packaging bag including the same. The polyester film which is formed with a polyester resin whose main constituent is ethylene terephthalate. The film has at least one heat sealing layer. The film has a predetermined heat sealing strength, a predetermined difference in reversing heat capacity measured with a temperature modulated DSC, and a predetermined heat shrinkage. Further, the laminate comprises at least one layer of the polyester film, and the packaging bag includes the same.

Abstract: The invention provides a polyester composition in which the primary repeating units contain an aromatic dicarboxylic acid component (Component A) and an ethylene glycol component (Component C) and a long-chain alkyl dicarboxylic acid component having not less than 6 carbons (Component B) or a long-chain alkyl diol component having not less than 6 carbons (Component D), wherein a sum (WB+WD) of a relative amount (WB) of Component B as calculated based on a total number of moles of Component A and Component B plus a relative amount (WD) of Component D as calculated based on a total number of moles of Component C and Component D are within a range of 2-13 mol %. The invention also provides a polyester film prepared from the polyester composition and having excellent dimensional stability, as well as a magnetic recording medium utilizing the polyester film.

Abstract: An object of the present invention is to provide a heat-resistant film that is suitable for protection of a surface provided with electrical conduction, decoration or the like in a plastic product, a glass product, a ceramic product, and the like, or that is suitable for holding a semiconductor, dies, and the like in producing dies through dicing and singulation.

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: Provided is a layered product that uses a high temperature-resistant transparent film having sufficient heat resistance, and that is capable of being mechanically released from an inorganic substrate after various processes are performed on the inorganic substrate since the adhesive strength between the high temperature-resistant transparent film and the inorganic substrate is appropriately weak, and that is less warped along with the inorganic substrate. In this layered product, no adhesive is used between the high temperature-resistant transparent film and the inorganic substrate, the release strength between the high temperature-resistant transparent film and the inorganic substrate is at most 0.3 N/cm, and the warpage amount of the layered product when heated at 300° C. is at most 400 µm.

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: In order to provide a foldable display that is suitable for mass production and that has no risk of image distortion at its folding portion after the display is repeatedly folded, the invention provides a polyester film for foldable displays in which no cracks occurs in the folding portion. In particular, the invention provides a polyester film for a foldable display, the film having a thickness of 10-125 ?m and a high-temperature hold angle in a bending direction of 70° or more, wherein the high-temperature hold angle refers to an angle of a crease formed after fixing the film at a heating temperature of 85° C. for 18 hours in such a manner that a strain of 1.7% is applied to both surfaces of a bent portion of the film, and the bending direction refers to a direction that is orthogonal to a folding portion.