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 polyamide based resin laminated film roll of the present invention has physical properties such as boiling water shrinkage percentage, surface roughness, refractive index in the thickness direction, etc., adjusted to achieve a predetermined range of degree of variability, when the polyamide based resin laminated film has a first sample cutout portion set up within 2 m from the winding end of film and final cutout portion within 2 m from the winding start of film, and at the same time, has a sample cutout portion set up at approximately every 100 m from the first sample cutout portion.

Abstract: The present invention provides a polyamide based mixed resin laminated film roll formed by winding up a polyamide based mixed resin laminated film comprising a plurality of polyamide mixed resin sheets stacked on top of each other. A first sample cutout portion is provided within 2 m from the winding end of film, and a final sample cutout portion is provided within 2 m from the winding start of film. The roll is regulated so that, when sample cutout portions are provided at intervals of about 100 m from the first sample cutout portion, for all samples cutout from the cutout portions, the elastomer content, tensile modulus of elasticity, thickness unevenness in the longitudinal direction and other properties fall within a predetermined variation range.

Abstract: The inventive heat-shrinkable polystyrene film is high in shrinkability in the longitudinal direction that is its main shrinkage direction, is excellent in perforated line openability, and has high toughness. The heat-shrinkable polystyrene film is characterized by particular values with respect to hot-water heat shrinkage ratio in the longitudinal and width directions, right angle tear strength in the width direction, and breaking energies in the longitudinal and width directions.

Abstract: A polyamide based resin film roll is provided. The polyamide based resin film roll comprising: a first sample cutout portion within 2 m from the winding end of film; and a final cutout portion within 2 m from the winding start of film, wherein when a sample cutout portion is set up in approximately every 100 m from the first sample cutout portion, in all samples cut out from each of the cutout portions, mechanical properties such as boiling water shrinkage percentage and refraction index in the thickness direction are adjusted within a given range of variation width.

Abstract: The problem to be solved by the present invention is to provide a biaxially oriented polyamide based mixed resin film roll with which bag forming processing by lamination is able to be performed smoothly and with high yield ratio and at the same time with which packages free of S-shaped curls can be obtained efficiently. A solution for the problem concerns the polyamide based mixed resin film roll of the present invention which includes a first sample cutout portion within 2 m from the winding end of film and a final cutout portion within 2 m from the winding start of film, and when a sample cutout portion is set up in approximately every 100 m from the first sample cutout portion, in all samples cut out from each of the cutout portions, physical properties such as elastomer content, elastic modulus in tension, boiling water shrinkage percentage and refraction index in the thickness direction are adjusted to be within a predetermined range of variation range.

Abstract: A heat-shrinkable polyester type film has a dynamic friction coefficient of at least one face with one face of another film of ?d?0.27 and range R?0.05 and a weight loss of less than 0.24 g/m2 after 10 reciprocation times with 400 g load using a color fastness rubbing tester comprising a friction element bearing a sand paper with #1000 particle diameter.

Abstract: An easy-to-tear biaxially-stretched polyester film having easy cut property and adhesiveness, as well as superior properties of polyester film, such as heat resistance, moisture-proof property, transparency, aroma retention and the like is provided. The polyester laminate film may include at least two layers, a layer substantially free of a molecular orientation and a layer having a molecular orientation, which shows a difference (Nx?Ny) between the refractive index Nx in the longitudinal direction and the refractive index Ny in the width direction of ?0.010 to 0.010 and the refractive index Nz in the thickness direction of not less than 1.480. The layer having a molecular orientation has a thickness of 1-8 ?m.

Abstract: The inventive heat-shrinkable polystyrene film is high in shrinkability in the longitudinal direction that is its main shrinkage direction, is excellent in perforated line openability, and has high toughness. The heat-shrinkable polystyrene film is characterized by particular values with respect to hot-water heat shrinkage ratio in the longitudinal and width directions, right angle tear strength in the width direction, and breaking energies in the longitudinal and width directions.

Abstract: The present invention provides a polyamide based mixed resin laminated film roll formed by winding up a polyamide based mixed resin laminated film comprising a plurality of polyamide mixed resin sheets stacked on top of each other. A first sample cutout portion is provided within 2 m from the winding end of film, and a final sample cutout portion is provided within 2 m from the winding start of film. The roll is regulated so that, when sample cutout portions are provided at intervals of about 100 m from the first sample cutout portion, for all samples cutout from the cutout portions, the elastomer content, tensile modulus of elasticity, thickness unevenness in the longitudinal direction and other properties fall within a predetermined variation range.

Abstract: To provide a heat shrinkable film that, when used as a label of beverage container, enhances the smoothness of external surface side to thereby prevent merchandise jamming in an automatic vending machine of beverage and that is fully satisfactory in solvent bonding capability and excels in processability. There is provided a heat shrinkable polyester film characterized in that (A) at least one major surface thereof is overlaid with 0.002 to 0.5 g/m2, in terms of solid content coating amount of a silicone containing easily slipping layer, (B) a friction coefficient between one and the same easily-slipping layer satisfies a relationship of ?d?0.27, and that (C) the heat shrinkable polyester film exhibits a heat shrinkage percentage of not less than 50% in a maximum shrinkage direction, after immersion in hot water at 95° C. for 10 seconds.

Abstract: The polyamide based resin laminated film roll of the present invention has physical properties such as boiling water shrinkage percentage, surface roughness, refractive index in the thickness direction, etc., adjusted to achieve a predetermined range of degree of variability, when the polyamide based resin laminated film has a first sample cutout portion set up within 2 m from the winding end of film and final cutout portion within 2 m from the winding start of film, and at the same time, has a sample cutout portion set up at approximately every 100 m from the first sample cutout portion.

Abstract: The easy-to-tear stretched aliphatic polyester film of the present invention is characterized in that the edge tear strength in the longitudinal direction and the transverse direction is not more than 22 N. The easy-to-tear stretched aliphatic polyester film of the present invention is produced by a method of irradiation of actinic rays on an aliphatic polyester film or a method of film-forming a film obtained by laminating aliphatic polyesters having different melting points in three layers of A/B/A under particular film-forming conditions.

Abstract: An oriented syndiotactic polystyrene-based film composed of an oriented film made of a syndiotactic styrene polymer and an adhesiveness-improving layer formed from a specific water-dispersible resin on at least one surface of the oriented film, which is excellent in the tight adhesion between the oriented film and the adhesiveness-improving layer, the adhesion between the adhesiveness-improving layer and an ink layer or laminate layer applied thereon, economical efficiency, recyclability, and environmental compatibility in production. It is particularly preferable that the film be produced by applying the aqueous dispersion of the water-dispersible resin on unstretched or uniaxially stretched film to form the adhesiveness-improving layer, stretching the obtained laminate uni- or bi-axially at least one time, and then heat-treating the resulting laminate.

Abstract: A production process of a film roll according to the present invention includes a step of melt-extruding and cooling wherein polyamide based resin is melt-extruded and cooled in a sheet form onto a movable cooling material surface to obtain an unstretched sheet; a step of biaxial stretching wherein an unstretched sheet is stretched biaxially in the longitudinal direction and the transverse direction; and a winding-up step of taking up the biaxially stretched film in a roll form. And in the step of melt-extruding and cooling, corona discharge in a streamer corona state is performed between an electrode applied with high dc voltage and the polyamide based resin sheet in the melted state, and sufficient electric charges that enable the polyamide based resin sheet in the melted state to come in close contact with the movable cooling material surface are imparted.

Abstract: The present invention provides a process for production of a polyamide based resin film roll comprising a step of melt-extruding and cooling wherein polyamide based resin is melt-extruded and cooled in a sheet form onto a mobile cooling material surface to obtain an unstretched sheet; a step of biaxial stretching wherein an unstretched sheet is stretched biaxially in the longitudinal direction and the transverse direction; and a step of winding up the biaxially stretched film that is biaxially stretched in a form of roll. Then, in the step of melt-extruding and cooling polyamide based resin onto a mobile cooling material surface, corona discharge in a streamer corona state is performed between an electrode applied with high DC voltage and the polyamide based resin sheet in the melted state, and sufficient electric charges that enable the polyamide based resin sheet in the melted state to come in close contact with the mobile cooling material surface are imparted.

Abstract: A heat-shrinkable polyester film comprises a layer free from a PET bottle-recycled material laminated on at least one side of a substrate layer containing a PET bottle-recycled material and the layer free from a PET bottle-recycled material is a printing surface or a heat-shrinkable polyester film comprises a substrate layer containing 45 to 80 wt % of PET bottle-recycled material and front-back layers containing an amorphous raw material as a main constituent laminated on the substrate layer, and which is drawn at least uniaxially, wherein when the film is immersed in hot water at 80° C. for 10 seconds and withdrawn, a heat shrinkage in the main-shrinkage direction is 30% or more and a heat shrinkage in the direction orthogonal to the main-shrinkage is 10% or less.

Abstract: The problem to be solved by the present invention is to provide a biaxially oriented polyamide based mixed resin film roll with which bag forming processing by lamination is able to be performed smoothly and with high yield ratio and at the same time with which packages free of S-shaped curls can be obtained efficiently. A solution for the problem concerns the polyamide based mixed resin film roll of the present invention which includes a first sample cutout portion within 2 m from the winding end of film and a final cutout portion within 2 m from the winding start of film, and when a sample cutout portion is set up in approximately every 100 m from the first sample cutout portion, in all samples cut out from each of the cutout portions, physical properties such as elastomer content, elastic modulus in tension, boiling water shrinkage percentage and refraction index in the thickness direction are adjusted to be within a predetermined range of variation range.

Abstract: The present invention provides an easy-to-tear biaxially-stretched polyester film having easy cut property and adhesiveness, as well as superior properties of polyester film, such as heat resistance, moisture-proof property, transparency, aroma retention and the like. The present invention provides an easy-to-tear biaxially-stretched polyester laminate film comprising at least two layers of a layer substantially free of a molecular orientation and a layer having a molecular orientation, which shows a difference (Nx?Ny) between the refractive index Nx in the longitudinal direction and the refractive index Ny in the width direction of ?0.010 to 0.010 and the refractive index Nz in the thickness direction of not less than 1.480, wherein the layer having a molecular orientation has a thickness of 1-8 ?m.

Abstract: A polyester stretch film having good tear property and good twistability, which is useful as a packaging film or a film for tape, as well as for stick packaging, PTP packaging, drug bag, folding packaging, and lid material is provided without losing heat resistance, cold resistance, moisture-proof properties, transparency, aroma retention and the like. This polyester resin film is produced by a method that includes mixing not less than two kinds of polyester resin starting materials having different melting points and extruding the mixture. The respective starting materials are cast in different extruders, melted, supplied to one mixer in a molten state, mixed and extruded to give a sheet, and the sheet is stretched at least in the monoaxial direction and heat-treated at a temperature of not lower than 3° C. lower than the melting point of the resin starting material having the lowest melting point.