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公开(公告)号：JP2004009598A
公开(公告)日：2004-01-15
申请号：JP2002167422
申请日：2002-06-07
Applicant: TORAY INDUSTRIES
Inventor： YAMAUCHI HIDEYUKI , OSADA SHUNICHI , TSUNASHIMA KENJI
Abstract: PROBLEM TO BE SOLVED: To manufacture a film of high quality having no surface defect with good productivity. SOLUTION: A process for manufacturing the film having no surface defect includes the steps of reducing a draft ratio in a forward direction by directing a mouthpiece position toward a rotating direction of a cooling drum, and bringing it into close contact with the drum by an electrostatic applying casting method. Thus, a cast sheet having no surface defect can be manufactured. COPYRIGHT: (C)2004,JPO
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公开(公告)号：JP2003089142A
公开(公告)日：2003-03-25
申请号：JP2001281788
申请日：2001-09-17
Applicant: TORAY INDUSTRIES
Inventor： OSADA SHUNICHI , TSUNASHIMA KENJI
Abstract: PROBLEM TO BE SOLVED: To provide a film manufacturing apparatus equipped with a roll cleaning means for manufacturing a thermoplastic resin film of high quality having no surface flaw with good productivity, and a film manufacturing method. SOLUTION: In the film manufacturing method for manufacturing the film while irradiating the surface of a roll used for manufacturing the film with ultraviolet rays to remove the deposit on the surface of the roll, the roll is irradiated with ultraviolet rays using an excimer UV lamp having at least a part having no electrode present at a part on the side of the ultraviolet irradiation surface thereof and the distance between the excimer UV lamp and the surface of the roll is not more than 50 mm.
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公开(公告)号：JP2002338677A
公开(公告)日：2002-11-27
申请号：JP2001146400
申请日：2001-05-16
Applicant: TORAY INDUSTRIES
Inventor： SONODA KAZUE , OSADA SHUNICHI , TSUNASHIMA KENJI
IPC: C08G63/90
Abstract: PROBLEM TO BE SOLVED: To reduce the amount of an oligomer generated in melt molding to thereby provide a process for producing a polyester resin composition excellent in the capability of controlling the deposition of an oligomer, surface properties and productivity. SOLUTION: A polyester composition is brought into contact with a solution having a temperature of 30-150 deg.C, a pH of above 5 and 9 or lower, and a phosphorus compound content of 0.01 wt.% or higher and below 50 wt.%. The polyester composition is also subjected to contact treatment in such a manner that the content of at least one element selected from germanium, antimony, titanium, silicon, lithium, sodium, potassium, calcium, magnesium and manganese, other than the particles of the polyester resin composition is below 300 ppm.
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公开(公告)号：JP2002210818A
公开(公告)日：2002-07-31
申请号：JP2001012842
申请日：2001-01-22
Applicant: TORAY INDUSTRIES
Inventor： TSUNASHIMA KENJI , OSADA SHUNICHI
Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing a biaxially oriented thermoplastic resin sheet having uniform various physical properties such as uniform thermal, optical, mechanical properties and the like along a widthwise direction, excellent thermal dimensional stability and mechanical properties and good flatness. SOLUTION: The method for manufacturing the biaxially oriented thermoplastic resin sheet comprises the steps of orienting a thermoplastic resin sheet by stretching the thermoplastic resin sheet at least in a longitudinal direction, further providing the sheet for a roll heat treatment under a higher temperature condition than a stretching temperature of the stretching, and thereafter providing the sheet for a tenter heat treatment.
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公开(公告)号：JP2001062911A
公开(公告)日：2001-03-13
申请号：JP24274499
申请日：1999-08-30
Applicant: TORAY INDUSTRIES
Inventor： OSADA SHUNICHI , TSUNASHIMA KENJI , SONODA KAZUE
Abstract: PROBLEM TO BE SOLVED: To upgrade the quality and productivity of a thermoplastic resin sheet by irradiating a rotor with which a running film comes into contact, with plasma and thereby removing an organic matter sticking to the rotor. SOLUTION: The removal of an organic matter sticking to a rotor and the mitigation of damage to the surface material quality of the rotor due to plasma, are realized by adjusting the irradiation with the plasma in terms of the rotary velocity of the rotor, the irradiation distance of the plasma and the moving velocity of a plasma generating electrode. The decomposition and removal of the organic matter are made possible by irradiating the rotor which is becoming contaminated by contact with a running film with plasma and thus the organic matter-free rotor is obtained. Consequently, it is possible to remove a contamination caused by the organic matter while the film is running without once stopping the manufacture of a thermoplastic resin film, hence the inhibition of flaw generation in the film and the improvement of its productivity.
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Patent Agency Ranking
公开(公告)号：JP2001011228A
公开(公告)日：2001-01-16
申请号：JP18491699
申请日：1999-06-30
Applicant: TORAY INDUSTRIES
Inventor： OSADA SHUNICHI , OKAZAKI IWAO , SONODA KAZUE
IPC: C08J9/12 , C08K5/053 , C08K5/103 , C08L23/26 , C08L101/00 , C08L101/16
Abstract: PROBLEM TO BE SOLVED: To provide a foam which comprises a thermoreversibly crosslinkable resin and has a fine cell diameter thereby exhibiting improved dynamic properties, looking ultra-white and presenting a good appearance, and furthermore is excellent in recyclability, and to provide a method for preparing the same. SOLUTION: This foam comprises a thermoreversibly crosslinkable resin which flows at a flow beginning temperature Tc( deg.C) or above and has a crosslinked structure at Tc-40( deg.C) or below, and has an average cell diameter of at least 0.1 μm and not more than 30 μm and a void content of at least 20% and not more than 99%. The foam can be prepared by injecting a blowing agent soluble in a thermoreversibly crosslinkable resin into the resin at a temperature where the melt index (MI) of the resin is at least 1.5, cooling the resin down to a temperature where the MI of the resin is not more than 1.0 and allowing it to expand at a discharge opening.
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公开(公告)号：JPH11300814A
公开(公告)日：1999-11-02
申请号：JP11040598
申请日：1998-04-21
Applicant: TORAY INDUSTRIES
Inventor： OSADA SHUNICHI , TSUNASHIMA KENJI , MIYAGAWA KATSUTOSHI
Abstract: PROBLEM TO BE SOLVED: To provide a white film which is of a low specific gravity and has a high cushioning performance and further is hardly creased with excellent flexible properties, especially a white film which can be used best suitably as a base material for a print base material, wrapper, card, label, receptive paper for video printer, photographic paper, display board, reflector base material for face light source, film for radiography, model paper for ceramic molding or the like. SOLUTION: This white film is made of 95% or more one kind of thermoplastic resin of the total film constituent ingredients at least uniaxially stretched. In addition, the white film has 0.5 μm or more and 30 μm or less foam dia. (L) in the longitudinal or the width direction of the film and 0.1 μm or more and 10 μm or less foam dia. (Lz) in the thickness direction, the foam meeting the formula: 3
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公开(公告)号：JPH11156922A
公开(公告)日：1999-06-15
申请号：JP32754797
申请日：1997-11-28
Applicant: TORAY INDUSTRIES
Inventor： TSUNASHIMA KENJI , MIYAGAWA KATSUTOSHI , OSADA SHUNICHI
IPC: B29C47/88 , B29K101/12 , B29L7/00
Abstract: PROBLEM TO BE SOLVED: To prevent induction of a sheet surface defect, a thickness irregularity, and a width fluctuation even when a thickness of the sheet is thick by a method wherein when a thermoplastic resin molten sheet is stuck close to a transfer cooling medium by impressing an electrostatic charge thereto, costing is executed by making a water liquid film lie only at both end parts of the thermoplastic resin sheet. SOLUTION: In a cast method wherein a thermoplastic resin molten sheet is cooled by sticking that close to a transfer cooling medium by impressing electrostatic charge thereto, intensive adhesion to the transfer cooling medium is obtained over the whole of a sheet width by improving adhesion at an end part by making a water liquid film lie practically only at both end parts of the thermoplastic resin sheet. A thickness of the water liquid film formed at the sheet end part is further preferably 0.03 to 0.2 μm. Formation of the water liquid film can be executed by applying a water film and a water drop. As a method wherein such the water film and the water drop are applied, a comparatively simple roller coating method is preferable. It is important that a surface roughness of the transfer cooling medium is 0.2 μm or under and smooth.
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公开(公告)号：JPH1158498A
公开(公告)日：1999-03-02
申请号：JP22811097
申请日：1997-08-25
Applicant: TORAY INDUSTRIES
Inventor： TSUNASHIMA KENJI , MIYAGAWA KATSUTOSHI , OSADA SHUNICHI
IPC: B29C47/88 , B29K101/12 , B29L7/00
Abstract: PROBLEM TO BE SOLVED: To make it possible to realize adhesive properties across the entire width of a thermoplastic resin sheet and a high-speed casting process and further, stabilize stretching properties and coat formation by applying a static charge across a width which is larger than the entire width of the thermoplastic resin sheet to bring the resin sheet into contact tightly with a mobile cooling medium so that the melt sheet is cooled. SOLUTION: In a casting method by which a static charge is applied to a thermoplastic resin melt sheet to bring the melt sheet into contact tightly with a mobile cooling medium so that the melt sheet is cooled, the static charge is applied across a width which is larger than the entire width of the thermoplastic sheet. For this purpose, an electrode for bringing the center part of the sheet into contact tightly with the mobile cooling medium and an electrode for bringing the end part of the sheet into contact tightly with the medium are used. In addition, the applied voltage which is applied to the end part of the sheet is as low as about 5-15 kV so that discharge to the cooling medium is prevented from occurring, while the voltage to be applied to the center part of the sheet is as high as about 8-35 kV. Besides, the applied voltage which is applied to the end part of the sheet is lower than the voltage to be applied to the center part of the sheet.
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公开(公告)号：JPH09300518A
公开(公告)日：1997-11-25
申请号：JP12151896
申请日：1996-05-16
Applicant: TORAY INDUSTRIES
Inventor： OSADA SHUNICHI , TSUNASHIMA KENJI , MIYAGAWA KATSUTOSHI
Abstract: PROBLEM TO BE SOLVED: To enhance tear resistance and mechanical characteristics by selecting polymers constituting the respective layers of a film laminated at least as two layers in its thickness direction from either one of at least two kinds of different thermoplastic resins and providing at least one layer of which the longitudinal refractive index is larger than a lateral refractive index. SOLUTION: The polymers constituting the respective layers of a film laminated in at least two layers in its thickness direction are selected from either one of at least two kinds of different thermoplastic resins. At least one layer wherein a refractive index in a longitudinal direction is larger than that in a lateral direction is provided to the laminated film. Herein, a layer wherein the refractive index in the longitudinbal direction of the laminated film is larger than that in the laterial direction thereof is a layer wherein the refractive index in the flow direction of the film is larger than that in the right-angled direction when the thermoplastic resin constitution that layer is biaxially stretched as a single film. By this constitution, tear strength and mechanical characteristics can be enhanced.
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