Toyo Seikan Kaisha, Ltd.

Tohoku Seiki Industries, Ltd.

Isao Tanikawa

Sadao Hirata

Yoshitsugu Maruhashi

Shigezo Nohara

Masayoshi Yokoo

Junichi Matsuo

Norikazu Kainuma

Yoshinobu Takano

Masami Hirano

Kazuhisa Ishibashi

Muneki Yamada

Jinichi Yazaki

Kozaburo Sakano

Tsunehisa Namiki

Keitaro Harada

Masayasu Koyama

Takashi Yazaki

Tamio Fujiwara

Kyuichi Shibasaki

Ikuo Sugiyama

A magnetron sputtering system generates a high density plasma on a target by applying magnetic fields intersecting an electric field by using a plurality of magnets that are rotatably supported. The respective magnets are revolved and rotated so that the time variation of regions where a magnetic field (line of magnetic force) generated by the each magnet is orthogonal to an electric field is prevented from becoming monotonous. Further, the respective magnets are arranged to make the distances between the center of rotation and the center of revolution of the respective magnets different from each other, so that the regions where the magnetic field (line of magnetic force) generated by the each magnet is orthogonal to the electric field are dispersed in the radial direction of a target.

Sputtering system

A sputtering system for depositing a thin film on the surface of a disc substrate in which high precision positioning of an inner mask and an outer mask is facilitated. The sputtering system has a mask member placed on the surface of the substrate mounted on a substrate holder to cover a partial region on the surface of the substrate. A thin film is deposited by sputtering in a region on the surface of the substrate not covered by the mask member. A section for carrying in and carrying out the substrate has mechanically holds and releases the substrate holder mounting the substrate, and mechanically holds and releases the mask member.

Sputtering system and method for depositing thin film

This invention provides a chromatographic apparatus comprising an introduction part for a carrier gas as a main mobile phase medium, a sample injection part, a separation column comprising a stationary phase formed by coating a polymeric material, a part for housing the separation column, and a detector. The sample injection part is provided between the carrier gas introduction part and the inlet of the separation column. The chromatographic apparatus further comprises a solvent introduction means for adding a liquid solvent as a second mobile phase medium to a carrier gas and mixing them together, a mechanism for regulating the amount of the carrier gas introduced and the amount of the solvent added, and a mechanism for regulating the temperature of each flow passage. A plurality of clogging liquid stoppers, of which the liquid film thickness is equal to the inner diameter of a capillary column, are partly provided at predetermined intervals within the column in a longitudinal direction of the column. In such a state that a gas phase and a liquid phase are intermittently alternated, a mobile phase medium is moved toward a column outlet and a sample is separated by utilizing distribution between the solvent liquid film of the mobile phase medium and the column stationary phase. There is also provided a chromatographic analytical method utilizing this apparatus. According to this method, a sample can be separated without using any high pressure pump.

Gas-liquid two-phase flow chromatographic analyzer and method of analysis using the same analyzer

Sealed container for microwave oven cooking

An injection-molded body comprising a layer of an olefin/vinyl alcohol copolymer having a very high molecular weight is obtained by melt-kneading a composition comprising (i) a high-molecular-weight olefin/vinyl alcohol copolymer having a melt flow rate of 0.4 to 6.0 g/10 min as determined at 190.degree. C. and a vinyl alcohol content of 40 to 80 mole % and (ii) a low-molecular-weight olefin/vinyl alcohol copolymer having a melt flow rate of 3.0 to 60 g/10 min as determined at 190.degree. C., which is higher by at least 0.5 g/10 min than that of the high-molecular-weight ethylene/vinyl alcohol copolymer (i), and a vinyl alcohol content of 45 to 85 mole % at a weight ratio of from 98/2 to 40/60, and injecting the melt-kneaded composition into a mold through an orifice.

Injection-molded body of olefin/vinyl alcohol copolymer and process for

Process for preparation of injection molded body of olefin/vinyl alcohol

Disclosed is a coated oriented plastic vessel formed by subjecting a parison, preform or sheet comprising a molecularly orientable thermoplastic resin substrate and a coating layer of a vinylidene chloride copolymer formed on at least one surface of said substrate to a draw-molding operation such as biaxial draw-blow-molding or draw-forming, wherein the coating layer of the vinylidene chloride copolymer has such a molecular orientation tht the sum of two-dimensional orientation coefficients (l+m) in the axial direction and circumferential direction is at least 0.03 as measured according to the polarized light fluorometry and the coating layer is not substantially peeled at the low-temperature burst test conducted at -5.degree. C. This coated oriented plastic vessel is prepared by a process comprising coating an aqueous latex of a vinylidene chloride copolymer on at least one surface of a parison, preform or sheet composed of a molecularly orientable thermoplastic resin, drying the coated latex to form a coated structure and subjecting the coated structure to a draw-molding operation such as biaxial draw-blow-molding or draw-forming at a temperature higher than the glass transition temperature of the vinylidene chloride copolymer but lower than the melting point of the vinylidene chloride copolymer, at which temperature draw-molding of said thermoplastic resin is possible, to thereby from the coated structure into a shape of a vessel while drawing the coating layer.

Plastic vessel having oriented coating and process for preparation

Disclosed is a process for the preparation of a coated oriented plastic container, which comprises coating an aqueous latex or organic solvent solution of a vinylidene chloride copolymer on at least one surface of a parison, preform or sheet for formation of container which is formed by hot molding of a molecularly orientable thermoplastic resin, drying the coated parison, preform or sheet to form a coating layer, and subjecting the formed coated structure to draw molding such as biaxial draw blow molding or draw forming, wherein the coating layer of the vinylidene chloride copolymer is crystallized at the step of forming the coating layer or the draw molding step. In the coated oriented plastic container prepared according to this process, the adhesion of the coating layer of the vinylidene chloride copolymer to the plastic container substrate is highly improved, and even under severe conditions, peeling of the coating layer is prevented. Moreover, the gas barrier property, strength and chemical resistance of the container are prominently improved.

Process for preparation of coated oriented plastic container

A plastic bottle has as a wall-forming component a layer of a copolymer consisting essentially of 99 to 70% by weight of vinylidene cloride and 1 to 40% by weight of at least one acrylic or methacrylic monomer and further including up to 100 parts by weight of at least one member selected from other ethylenically unsaturated monomers per 100 parts by weight of the total amount of the first two monomers, the copolymer having an oxygen permeability constant of less than 9.times.10.sup.-14 cc.multidot.cm/cm.sup.2 .multidot.sec.multidot.cmHg as measured at a temperature of 20.degree. C. and a relative humidity of 100% and a water vapor permeability constant of less than 3.times.10.sup.-3 g.multidot.cm/m.sup.2 .multidot.day as determined according to the method of JIS Z-0208. This plastic bottle is obtained by casting an aqueous latex or the like of the above-mentioned copolymer in a bottle mold and drying the cast latex. This aqueous latex may be formed as a coating layer on a preformed plastic bottle. In this plastic bottle, the humidity dependency of the oxygen barrier property is prominently reduced.

Plastic bottles and process for preparation thereof

Disclosed is a process for the preparation of a coated plastic container, which comprises coating an aqueous latex or organic solvent solution of a vinylidene chloride copolymer on at least one surface of a plastic container formed by hot molding of a thermoplastic resin, drying the coating and crystallizing the coating simultaneously with or subsequently to the drying step. In the coated plastic container prepared according to this process, the adhesion of the coating layer of the vinylidene chloride copolymer to the plastic container substrate is highly improved, and even under severe conditions, peeling of the coating layer is prevented. Moreover, the gas barrier property, strength and chemical resistance of the container are prominently improved.

Process for preparation of coated plastic container

Disclosed is a vessel closure provided with an easily openable liner, said liner being composed of an olefin resin or olefin resin composition comprising as a lubricant two different lubricants having different functional characteristics whereby the quantity of the lubricant immigrating to the surface of the liner is effectively controlled within a certain range at temperatures of a broad range and the opening torque of the closure is controlled at a low level at storage temperatures of a broad range.

Easily openable liner for vessel closures

Disclosed is a laminated plastic container in the form of a bottle, the wall of which comprises a substrate formed of a melt-moldable plastic material, a coating layer formed on at least one surface of the substrate, said coating layer being composed of a copolymer consisting essentially of 99 to 70% by weight of vinylidene chloride and 1 to 30% by weight of at least one acrylic or methacrylic monomer and further including up to 100 parts by weight of at least one member selected from other ethylenically unsaturated monomers per 100 parts by weight of the total amount of said two monomers, said copolymer having an oxygen permeation coefficient of less than 9.times.10.sup.-14 cc.multidot.cm/cm.sup.2 .multidot.sec.multidot.cmHg as measured at a temperature of 20.degree. C. and a relative humidity of 100% and a water vapor permeability coefficient of less than 3.times.10.sup.-3 g.multidot.cm/m.sup.2 .multidot.day as determined according to the method of JIS Z-0208, and a protecting surface layer of a film-forming synthetic resin other than a vinylidene chloride resin, which is formed contiguously to said coating layer. This laminated plastic container is excellent in the barrier property to various gases such as oxygen, water vapor, nitrogen and carbon dioxide gas and other properties required for plastic containers. The humidity dependency of the oxygen barrier property is highly improved in this laminated plastic container.

Laminated plastic container and process for preparation thereof

A plastic bottle has as a wall-forming component a layer of a copolymer consisting essentially of 99 to 70% by weight of vinylidene chloride and 1 to 40% by weight of at least one acrylic or methacrylic monomer and further including up to 100 parts by weight of at least one member selected from other ethylenically unsaturated monomers per 100 parts by weight of the total amount of the first two monomers, the copolymer having an oxygen permeability constant of less than 9.times.10.sup.-14 cc.multidot.cm/cm.sup.2 .multidot.sec.multidot.cmHg as measured at a temperature of 20.degree. C. and a relative humidity of 100% and a water vapor permeability constant of less than 3.times.10.sup.-3 g.multidot.cm/m.sup.2 .multidot.day as determined according to the method of JIS Z-0208. This plastic bottle is obtained by casting an aqueous latex or the like of the above-mentioned copolymer in a bottle mold and drying the cast latex. This aqueous latex may be formed as a coating layer on a preformed plastic bottle. In this plastic bottle, the humidity dependency of the oxygen barrier property is prominently reduced.

Growing community of inventors

Ayase, Japan

Isao Tanikawa