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公开(公告)号：JPH11139020A
公开(公告)日：1999-05-25
申请号：JP30872897
申请日：1997-11-11
Applicant: TORAY INDUSTRIES
Inventor： YAMAUCHI HIDEYUKI , KIDA KENJI , FUTAI KATSUNORI
Abstract: PROBLEM TO BE SOLVED: To provide a porous supporting body for heat-sensitive stencil printing wherein a picture quality is favorable, and also, there is no trouble in a printing machine such as plate fitting wrinkles by a method wherein the porous supporting body made of a thermoplastic resin fiber is made to be one which is biaxially drawn, and also, is constituted of layers of two kinds or more with different average fiber diameters. SOLUTION: This porous supporting body being used for a base paper of heat- sensitive stencil printing which is perforated and made by a thermal head or a laser beam or the like, is made one which comprises a thermoplastic resin fiber and is biaxially drawn, and is constituted of layers of two kinds or more with different average fiber diameters. In this case, preferably, an average fiber diameter of the fiber which constitutes a surface layer on at least one side, is made 5 μm or lower. Also, the porous supporting body is formed in such a manner that the METSUKE (basic weight) of the porous supporting body is made to be 1-20 g/m , and in addition, the tensile stress at the time of 2% stretch may be 0.06 N/mm or higher. As the thermoplastic resin to be used, although not being specifically limited, polyethylene terephthalate, polyethylene naphthalate or the like can be counted.
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公开(公告)号：JPH10324074A
公开(公告)日：1998-12-08
申请号：JP13378497
申请日：1997-05-23
Applicant: TORAY INDUSTRIES
Inventor： KAWAZU YUKIO , FUTAI KATSUNORI , KIDA KENJI
IPC: B41N1/24 , B32B27/00 , C09D167/00
Abstract: PROBLEM TO BE SOLVED: To prevent a base paper from developing wrinkles at its installation to a place cylinder by a method wherein the maximum bending torque in either longitudinal or lateral direction measured with a pure bending tester of the base paper is set to be larger than a specified value. SOLUTION: An undrawn non-woven fabric is made of polyethylene terephthalate stock. An undrawn film is produced by extruding copolymer polyester resin stock from an extruder. The undrawn non-woven fabric, on which the undrawn film is put, is fed to a longitudinal extruder so as to paste the undrawn non-woven fabric to the undrawn film in order to orient and cool the undrawn film pasted with the undrawn non-woven fabric between orientation rolls and then feed and stretch them in a tenter type lateral stretcher in order to heat-treat them in a heat-treating zone for taking up in a roll. By applying a wax-based releasant of the film surface, a thermosensitive stencil printing base paper is produced so that the paper has the maximum bending torque in either longitudinal or lateral direction measured with a pure bending tester of 0.5 Ncm/cm or higher. As a result, the base paper can be prevented from developing wirinkles at its installation to a plate cylinder.
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53.发明专利
公开(公告)号：JPH10119451A
公开(公告)日：1998-05-12
申请号：JP28253296
申请日：1996-10-24
Applicant: TORAY INDUSTRIES
Inventor： KIDA KENJI , KAWAZU YUKIO , YAMAUCHI HIDEYUKI
Abstract: PROBLEM TO BE SOLVED: To realize a film for thermal stencil printing which has high sensitivity and causes little nonuniformity in perforation, by a method wherein the melting receptivity of a biaxially oriented polyester film having a melting point in a specified range is set to be in a specified range at a specified temperature. SOLUTION: A biaxially oriented polyester film of which the melting point is 140-240 deg.C is manufactured by extruding polyester being a copolymer of polyethylene terephthalate, ethylene terephthalate and ethylene isophthalate, or the like, onto a cast drum by a T-die extrusion method and by cooling it by the drum kept at a prescribed temperature. The melting resistivity of the biaxially oriented polyester film is set to be 1×10 -5×10 Ω.cm at a temperature of 280 deg.C. Since the film manufactured in this way has high sensitivity, the energy supplied to a thermal head of a printing machine can be lessened and the impairment of the thermal head can be reduced, when the film is made stencil paper.
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公开(公告)号：JPH10119448A
公开(公告)日：1998-05-12
申请号：JP28255196
申请日：1996-10-24
Applicant: TORAY INDUSTRIES
Inventor： YAMAUCHI HIDEYUKI , KAWAZU YUKIO , KIDA KENJI
IPC: B41N1/24
Abstract: PROBLEM TO BE SOLVED: To make durability excellent by joining a polyester film and polyester nonwoven fabric without using an adhesive as an intermediary and by setting a tear propagation resistance in the longitudinal direction to be in a specified range. SOLUTION: Polyester is prepared by putting an acid component in an esterification reaction directly with a diol component and by subjecting a product of this reaction to condensation polymerization by heating it under a reduced pressure, while removing an excess of the diol component. A polyester film is obtained by extruding this polyester onto a cast drum by a T-die extrusion method. The polyester film thus obtained and polyester nonwoven fabric are joined by a method of thermocompression bonding and, besides, a tear propagation resistance in the longitudinal direction is set to be 1-8 N. According to this constitution, a property of perforation and easiness of cutting are made excellent and a printed matter is made fine and clear in a high degree.
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公开(公告)号：JPH1016425A
公开(公告)日：1998-01-20
申请号：JP16764896
申请日：1996-06-27
Applicant: TORAY INDUSTRIES
Inventor： KAWAZU YUKIO , KIDA KENJI , YAMAUCHI HIDEYUKI
Abstract: PROBLEM TO BE SOLVED: To improve print clarity and print wear by specifying a base paper film, fiber orientation parameters and the number of films formed on a support fiber fusion-bonding part, in a base paper for thermosensitive stencil process printing comprising a porous support of polyester fiber bonded to polyester film. SOLUTION: This base paper for thermosensitive stencil process printing to be made up by perforation using a thermal head consists of a porous support comprising polyester fiber bonded to one of the faces of polyester film not through an adhesive. In addition, both film orientation parameter of the base paper sought by laser Raman spectroscopy and fiber orientation parameter fall within the range of 3-10. Further, the base paper is formed in such a manner that some of the web-like films with a diameter of 50μm or more formed on the fusion-bonded part of fibers of the support total 30 or less per 1mm . In this case, the polyester film to be used has a melting point of 230 deg.C or lower. Besides, the melting point of the polyester fiber is set higher than that of the polyester film.
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Patent Agency Ranking
公开(公告)号：JPH09300846A
公开(公告)日：1997-11-25
申请号：JP12498596
申请日：1996-05-20
Applicant: TORAY INDUSTRIES
Inventor： NIINUMADATE HIROSHI , KIDA KENJI , YAMAUCHI HIDEYUKI
Abstract: PROBLEM TO BE SOLVED: To provide base paper for thermal stencil printing in which handling properties are excellent and especially punching sensitivity, curl resistance and printing characteristics (printablility, plate wearability) are excellent. SOLUTION: The base paper for thermal stencil printing is constituted by bonding a film comprising a polyester which contains a dicarboxylic acid component and a glycol component as the principal constitutional components to a porous supporting body formed of a synthetic fiber as a main body. In this case, glass transition temperature Tg1 ( deg.C) of the film and glass transition temperature Tg2 ( deg.C) of the porous supporting body satisfy the formula Tg2
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公开(公告)号：JPH09277733A
公开(公告)日：1997-10-28
申请号：JP9226196
申请日：1996-04-15
Applicant: TORAY INDUSTRIES
Inventor： YAMAUCHI HIDEYUKI , NIINUMADATE HIROSHI , KIDA KENJI
Abstract: PROBLEM TO BE SOLVED: To obtain a base paper for a thermal stencil printing which has high crosswise strength and high durability and further, shows outstanding stencil making accuracy and printing efficiency. SOLUTION: This base paper for thermal stencil printing comprises a porous support of a synthetic fiber bonded to one of the faces of a thermoplastic polyester film without an interposed adhesive. In addition, the double refraction of the fiber which constitutes the porous support entirely satisfies the formulae. Δn2-Δn1>=0.05, 0.1×10 , 10×10 . The longitudinal direction of a stencil paper is 0 deg., its orthogonal direction is 90 deg., and the average value of the double refraction obtained by the laser Raman spectroscopy of the fiber arranged with the range of 0-15 deg. is Δn1, and the average value of the double refraction obtained by the laser Raman spectroscopy of the fiber arranged in the range of 75-90 deg. is Δn2.
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公开(公告)号：JPH09272272A
公开(公告)日：1997-10-21
申请号：JP8370996
申请日：1996-04-05
Applicant: TORAY INDUSTRIES
Inventor： KAWAZU YUKIO , KIDA KENJI , DEGUCHI YUKICHI
Abstract: PROBLEM TO BE SOLVED: To provide the good bonding properties with a thermal head, eliminate the generation of unperforation at the time of processing, provide the ink permeability and ink holding properties, eliminate the generation of white voids of a black solid printed section and also provide the superior printing properties. SOLUTION: In this heat-sensitive stencil printing base paper composed of a thermoplastic resin film and a porous substrate, the porous substrate is constituted of a fiber structure of at least two layers A and B, and a substrate layer A is constituted of fibers arranged irregularly while a substrate layer B is constituted of fibers arranged regularly. Therefore, ink is not blurred even when a large number of papers are printed. Also as the strength and rigidity of the substrate are high, crease, release and breakage are not generated on the base paper when a large number of papers are printed, and the heat-sensitive stencil printing base paper of superior resistance to printing is provided.
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公开(公告)号：JPH09142054A
公开(公告)日：1997-06-03
申请号：JP30299795
申请日：1995-11-21
Applicant: TORAY INDUSTRIES
Inventor： KAWAZU YUKIO , KIDA KENJI , YAMAUCHI HIDEYUKI
Abstract: PROBLEM TO BE SOLVED: To obtain a stencil paper with good durability having no distortion in the printing drum and printing images, wrinkles on the paper during the printing period of time, and a breakage of paper by allowing a folding endurance by an MIT fold-testing machine to be a specific value or more in its vertical direction of paper. SOLUTION: The photosensltive stencil printing paper is obtained by co- stretching, under a heat compressed condition, a thermoplastic resin film consisting of a unstretched polyester resin film and a porous carrier consisting of low oriented polyester resin fiber. Besides, the thermosensitive stencil printing paper is allowed to be 1000 times or more at the time of a tension of 0.5Kgf per 1cm width in its folding endurance by an MIT fold-testing machine in the vertical direction of paper being a traveling direction of paper within the printing machine. When the folding endurance is 100 times or less, the anti- printing property comes to be inferior with the consequence that distortions take place in images or wrinkles occur in paper.
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公开(公告)号：JPH09136492A
公开(公告)日：1997-05-27
申请号：JP23813396
申请日：1996-09-09
Applicant: TORAY INDUSTRIES
Inventor： KAWAZU YUKIO , KIDA KENJI , YAMAUCHI HIDEYUKI
Abstract: PROBLEM TO BE SOLVED: To prevent the deformation of or damage to a raw sheet by setting the wet tensile elastic modulus of the sheet for printing thermal stencil having a thermoplastic resin film and a porous support in the vertical direction to the holding rate of the tensile elastic modulus before wetting to a specific rate. SOLUTION: The holding rate of the wet tensile elastic modulus of a raw sheet for printing thermal stencil having a thermoplastic resin film and a porous support in the vertical direction to the elastic modulus before wetting is set to 60% or more. The wet tensile modulus rate in the vertical direction is set to about 1 to 10N/cm. The film is particularly preferably a polyester film, and oriented by a T-die process or an inflation process. The thickness is preferably 0.1 to 5μm from the punchability and film forming stability. The porous support preferably contains synthetic fiber as a main body or particularly preferably polyester fiber in view of resistivity against swelling, and particularly preferably nonwoven fabric in view of the balance of the ink permeability and retentivity. The film is directly thermally adhered to the support.
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