Abstract: The invention provides a roll of a white heat-shrinkable polyester-based film containing titanium oxide which can suppress occurrence of a processing trouble of a label or the like cut out from the roll, even when widening the roll. The roll of the white heat-shrinkable polyester-based film satisfies the following requirements: (1) the length of the film is 1,000-20,000 m and the width of the film is 400-10,000 mm, (2) the heat-shrinkage ratio in a main shrinkage direction is 50-85%, (3,4) the difference between the maximum and minimum heat-shrinkage ratio in the main shrinkage direction is 0-3% among samples which are sampled in each of the width and longitudinal directions of the film, and (5,6) the difference between the maximum and minimum apparent specific gravity is 0-0.01 g/cm3 among samples which are sampled in each of the width and longitudinal directions of the film.
Abstract: A sheet-shaped hollow fiber membrane module includes a casing having a flat shape, the casing including a supply port and a discharge port, and a plurality of hollow fiber membranes accommodated inside the casing. The casing includes a plurality of the supply ports on one main surface of the casing and a plurality of the discharge ports on the other main surface of the casing, at least one of the plurality of the supply ports is closable, and at least one of the plurality of the discharge ports is closable. Each of the plurality of hollow fiber membranes includes a first opening at one end of the hollow fiber membrane and a second opening at the other end of the hollow fiber membrane, and the first opening and the second opening communicate with an outside of the casing and do not communicate with an inside of the casing.
Abstract: It is provided that a film for packaging and a packaging bag that can suppress diffusion of odor to hold the twisted state even after placing an object at the center of a film, wrapping the object, twisting the upper part of the object and leaving it for a certain time. The film of the present invention is the film for packaging comprising a resin film, wherein the twist holding angle is 400 degrees or more.
Abstract: Provided is a heat-shrinkable polyester film that suppresses deterioration of the shrinkage finish property associated with a decline in performance during aging and does not loosen even after being used as a label. This heat-shrinkable polyester film comprising a polyester of a predetermined composition fulfills all of the following: (1) a ratio A1/A2 of the absorbancy (A1) at 1340 cm?1 and the absorbancy (A2) at 1410 cm?1 of the film measured by polarized ATR-FTIR from 0.45 to 0.75 or from 0.40 to less than 0.45 in either the width direction or longitudinal direction of the film; (2) a ratio (shrinkage stress after 30 seconds/maximum shrinkage stress) of the shrinkage stress after 30 seconds when the film is heat shrunk for 30 seconds in 90° C. hot air (shrinkage stress after 30 seconds) and the maximum shrinkage stress of from 75% to 100%; and (3) a hot-water shrinkage in the width direction of from 30% to 55% when, after aging the film for 672 hours in a 30° C.
Abstract: Using a compound that contains a structure where a carbazol-9-yl group substituted with a perfluoroalkyl group at the 2-position and the 7-position and a structural unit having a positive Hammett constant ?p (but excluding an aromatic hydrocarbon group) bond to each other directly or via a ?-conjugated linking group, wherein at least a part of the carbazol-9-yl group and at least a part of the structural unit having a positive Hammett constant ?p and, if any, the ?-conjugated linking group form a ?-electron conjugated system, an organic light emitting device having a high emission efficiency can be provided.
Abstract: It is provided that a multifilament and a braid that are capable of being processed into products in a wide range of temperature and are excellent in dimensional stability and abrasion resistance. A multifilament comprising 5 or more monofilaments and a braid comprising the multifilament, wherein the multifilament contains polyethylene having an intrinsic viscosity [?] of 5.0 dL/g or more and 40.0 dL/g or less and substantially including ethylene as a repeating unit, the monofilament has a titer of 3 dtex or more and 40 dtex or less, the multifilament has a thermal shrinkage of 0.20% or less at 70° C. and a thermal shrinkage of 3.0% or less at 120° C., and a stress Raman shift factor under the condition of applying a load that is 10% of a breaking load to the monofilament is 5.0 cm?1 or less.
Abstract: The present invention provides an elastic network structure that has excellent cushioning properties and makes less sound when it is compressed and recovers its shape. A network structure including a three-dimensional random loop bonded structure obtained by forming random loops by curling treatment of a continuous linear structure comprising a thermoplastic resin, and by making each loop mutually contact in a molten state to weld the majority of contacted parts, wherein (a) the continuous linear structure is a hollow cross section, (b) the degree of hollowness of the hollow cross section is not less than 10% and not more than 50%, (c) the fiber diameter of the continuous linear structure is not less than 0.10 mm and not more than 0.65 mm, and (d) the number of bonded points per unit weight of the random loop bonded structure is not less than 200/g and less than 500/g.
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: The invention provides a heat-shrinkable polyester film, which has a main shrinkage direction in a longer direction, exhibits a higher shrinkage ratio in the main shrinkage direction, has small difference in shrinkage ratio at a high temperature and a low temperature so as not likely to generate wrinkles or the like when being used as a label, and exhibits small over-time decrease in shrinkage ratio at a low temperature. The heat-shrinkable polyester film has, as a main component, ethyleneterephthalate, and an amount of a diethyleneglycol (DEG) component is 10-25 mol % with respect to 100 mol % of a polyhydric alcohol component in all of polyester resin that composes the film.
Abstract: The present invention has been made in view of the above-mentioned conventional technical problems. That is, an object of the present invention is to provide a gas barrier film excellent in barrier properties to oxygen and water vapor, preferably excellent in water vapor barrier properties after being left to stand in a humidified environment for a prescribed period.
Abstract: The present invention is a crystalline polyamide resin composition, comprising 100 parts by mass of a crystalline polyamide resin and 1 to 10 part(s) by mass of a modified polyolefin resin. The crystalline polyamide resin composition of the present invention can provide a molded product which has so excellent sliding durability that changes in surface appearance against repeated slidings for tens of thousands times with high load are small and which has excellent mechanical strength and moldability, while keeping excellent characteristics inherent to a crystalline polyamide resin.
Abstract: The invention provides a liquid crystal display device, as well as a polarizer and a protective film suitable for the liquid crystal display device. The liquid crystal display device comprises a backlight light source, two polarizers, and a liquid crystal cell disposed between the two polarizers; the backlight light source being a white light-emitting diode light source; each of the two polarizers comprising a polarizing film and protective films laminated on both sides of the polarizing film; at least one of the protective films being a polyester film having an adhesion-facilitating layer; the polyester film having a retardation of 3,000 to 30,000 nm; and the adhesion-facilitating layer comprising a polyester resin (A) and a polyvinyl alcohol resin (B).
Abstract: It is provided that a multifilament and a braid that are capable of being processed into products in a wide range of temperature and are excellent in dimensional stability and abrasion resistance. A multifilament comprising 5 or more monofilaments, wherein the multifilament contains polyethylene having an intrinsic viscosity [?] of 5.0 dL/g or more and 40.0 dL/g or less and substantially including ethylene as a repeating unit, and wherein a difference between a maximum value and a minimum value in a ratio of a diffraction peak intensity of orthorhombic crystal (200) plane to a diffraction peak intensity of orthorhombic crystal (110) plane in a monofilament cross section is 0.22 or less.
Abstract: A heat-shrinkable polyester-based film is provided, which is heat-shrinkable in the longitudinal direction and which is freed from various problems, particularly curling-up or peeling in a bonded area. The heat-shrinkable polyester-based film is characterized by an A1/A2 (absorbance) ratio in the longitudinal direction, which is the main shrinking direction of the film, of 0.55 to 1, with an A1/A2 ratio in the width direction perpendicular to the main shrinking direction of 0.5 to 0.9, wherein A1 is the absorbance of the film at 1340 cm?1 and A2 is the absorbance of the film at 1410 cm?1 as determined by polarized ATR-FTIR spectroscopy, and a hot-water shrinkage of 35 to 60% in the longitudinal direction of the film and ?3 to 12% in the width direction of the film, wherein the hot-water shrinkage is determined by dipping the film in hot water at 90° C. for 10 seconds.
Abstract: A laminate mainly made of polyimide with low thermal expansion, high mechanical strength, and high heat resistance, and a method for manufacturing the same are provided. A surface of a polyimide film is activated and then treated by a silane coupling agent. Subsequently, the obtained silane coupling agent-treated polyimide films are superimposed, and pressure and heat are applied to the superimposed polyimide films so as to manufacture a polyimide film laminate. The obtained polyimide film laminate has a cross-sectional structure of superimposing polyimide film layers and silane coupling agent condensate layer(s) alternately to each other. Adhesive strength between the polyimide films of the polyimide film laminate of the present invention does not change largely from initial adhesive strength even after heat treatment at 400° C. for 15 minutes. Further, the polyimide film laminate exhibits a high bending elastic modulus and impact resistance.
Abstract: The present invention provides a coating fabric for airbags where an elastomer is coated to at least one side of textile constituted from synthetic fiber filament, which is characterized in that the coating weight of the resin is as small as 10 to 20 g/m2 and an average resin thickness of the head top in the textile surface is 4.0 ?m to 12.0 ?m in both directions of warp and weft and that the average value of burning speed measured according to FMVSS 302 is not more than 60 mm/min in both directions of warp and weft and the maximum value thereof is not more than 1.2-fold to the average value in both directions of warp and weft.
Abstract: It is provided that a nonwoven fabric for reinforcing foam molded articles which is excellent in the dimensional stability in a cutting/sewing step, in the followability to a mold in a foam molding step, and gives a foam molded article with excellent appearance and durability. A nonwoven fabric for reinforcing foam molded articles formed by interlacing at least 2 filament nonwoven fabric layers with different apparent density, wherein the nonwoven fabric has base weight of 50-110 g/m2, thickness of 0.5-1.2 mm, 23 to 50 N/5 cm stress at the time of 5% elongation in longitudinal direction, 15 N/5 cm or lower stress at the time of 5% elongation in transverse direction, and air permeability of 50 to 250 cm3/cm2·sec.
Abstract: The present invention provides a copolymerized polyester resin which can produce an adhesive resin having an excellent color tone and an excellent durability when used for an adhesive to be applied to various uses. A copolymerized polyester resin, comprising, as constituting ingredients, a dicarboxylic acid ingredient containing 75 molar % or less of terephthalic acid and a diol ingredient containing two or more kinds of diols, characterized in that the copolymerized polyester resin satisfies the following (1) and (2): (1) A decrease in a reduced viscosity after the copolymerized polyester resin is subjected to a heat treatment in a nitrogen atmosphere at 275° C. for 2 hours is 0.20 dl/g or less; and (2) A color b value is 5 or less.
Abstract: It is provided that a polyester film excellent in heat resistant dimension stability, impact-resistant strength properties, easy-slipping properties, mechanical properties, transparency, and gas barrier performance, and a film roll obtained by winding up this polyester film. A polyester film includes at least one layer mainly including a polyester resin containing a dicarboxylic acid component including furandicarboxylic acid as a main component and a glycol component including ethylene glycol as a main component; and the polyester film has a plane orientation coefficient ?P of not less than 0.005 and not more than 0.200, a thickness of not less than 1 ?m and not more than 300 ?m, a heat shrinkage rate of 3.2% or less in each of the MD direction and the TD direction at 150° C. for 30 minutes, and a layer containing at least one additive.
March 7, 2017
April 11, 2019
TOYOBO CO., LTD., SYNVINA C.V.
Jun INAGAKI, Katsuya ITO, Yukihiro NUMATA, Shota HAYAKAWA, Jesper Gabriel VAN BERKEL