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公开(公告)号：JP2002180332A
公开(公告)日：2002-06-26
申请号：JP2000376514
申请日：2000-12-11
Applicant: TORAY INDUSTRIES
Inventor： MOCHIZUKI KATSUHIKO , KIDAI AKIRA , MAEDA YUHEI
Abstract: PROBLEM TO BE SOLVED: To produce a polyester-based conjugated yarn exhibiting high bulkiness and excellent crimp-developing ability and capable of obtaining excellent high- quality fabric, scarcely developing Yoryu-like (purple willow) crepe even when the yarn is twistless or soft twist yarn and excellent in soft stretchability. SOLUTION: The polyester-based conjugated yarn is characterized in that the yarn is a multifilament composed of a conjugated fiber. The conjugated fiber is obtained by laminating two kinds of polyester-based polymers A and B side by side in the direction of fiber length. The polyester-based polymer A is a polyester mainly consisting of polytrimethylene terephthalate and the polyester-based polymer B is a fiber-forming polyester and the cross section of the conjugated fiber has a flat shape having a conjugate interface in the minor axis direction and the outer periphery of the polyester-based polymer B has a nearly circular shape and the outer periphery of the polyester-based polymer A has a nearly elliptical or square shape and ovality represented by a ratio of the minor axis to the major axis of cross section is 1.3 to 6.
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公开(公告)号：JP2002088570A
公开(公告)日：2002-03-27
申请号：JP2000271242
申请日：2000-09-07
Applicant: TORAY INDUSTRIES
Inventor： MOCHIZUKI KATSUHIKO , KIDAI AKIRA , MAEDA YUHEI
Abstract: PROBLEM TO BE SOLVED: To provide a polyester undrawn yarn which is stably produced without causing tight winding in high speed spinning, excellent in mechanical properties such as strength, little in change of the properties with the lapse of time even under a high temperature environment when transportation or the like in summer, excellent in shape stability, and smoothly passing through the following processes such as a false twisting and drawing process, and a method for manufacturing the same. SOLUTION: The polyester undrawn yarn is a multifilament consisting of polytrimethylene terephthalate fiber constituted substantially of polytrimethylene terephthalate and having an intrinsic viscosity of 0.7-1.2, and it satisfies the following requirements. (1) Breaking strength: >=2.0 cN/dtex (2) Rupture elongation: 55-130% (3) Degree of birefringence: 0.04-0.07 (4) Delayed shrinkage percentage:
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公开(公告)号：JP2001207337A
公开(公告)日：2001-08-03
申请号：JP2000021396
申请日：2000-01-31
Applicant: TORAY INDUSTRIES
Inventor： OCHI TAKASHI , KIDAI AKIRA , SATO MASAYUKI
IPC: D01F8/14
Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a latently crimpable polyester yarn by which color developing properties that have hitherto been problems can be improved and a fabric having slight yarn unevenness and excellent in stretchability can be obtained. SOLUTION: This method for producing a latently crimpable polyester yarn is characterized in that a yarn prepared by spinning a polyester and a modified polyester having =85 deg.C drawing temperature and >=NDR×1.20 draw ratio (NDR is a natural draw ratio) by using a drawing machine equipped with at least one pair of hot rollers, then subjected to heat treatment on the hot roller and subsequently stretched between the heat-treating hot roller and an unheated roller by >=0.7%.
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公开(公告)号：JP2001040537A
公开(公告)日：2001-02-13
申请号：JP21346199
申请日：1999-07-28
Applicant: TORAY INDUSTRIES
Inventor： OCHI TAKASHI , KIDAI AKIRA , NABESHIMA KEITARO
Abstract: PROBLEM TO BE SOLVED: To obtain the subject yarn having an improved crimp retention ratio and excellent stretchability, useful for a fabric, and the like, by twisting a specific latently crimp developing polyester fiber yarn and providing the yarn with an ability of developing a hollow structure in the length direction of the central part of the yarn by heat treatment. SOLUTION: A latently crimp developing polyester fiber yarn which is a yarn composed of a latently crimp developing polyester fiber made of two or more kinds of polymers such as a polypropylene terephthalate, a polyethylene terephthalate, and which simultaneously satisfies =0.25 cN/dtex maximum value of shrinkage stress, >=30% crimp extension ratio E0 when heat-treated in a free-load state and >=5% crimp extension ratio E35 when heat-treated under 3.5×10-3 cN/dtex load is twisted and has ability of developing a hollow structure in the length direction of the central part of the yarn by heat treatment. A fabric is formed by using the yarn and the hollow structure is developed by heat treatment to preferably produce the objective fabric.
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公开(公告)号：JPH04307294A
公开(公告)日：1992-10-29
申请号：JP7136191
申请日：1991-04-04
Applicant: TORAY INDUSTRIES
Inventor： ONDA TAKAYOSHI , FUKUHARA MOTOTADA , KIDAI AKIRA
IPC: B41C1/14 , B41N1/24 , D01F8/14 , D03D15/00 , D06M10/00 , D06M10/10 , D06M15/19 , D06M101/00 , D06M101/16 , D06M101/30 , D06M101/32
Abstract: PURPOSE:To provide a device to manufacture polyester screen gauze which adheres to masking resin adequately. CONSTITUTION:A mesh fabric used is made of a core sheath type composite monofilament consisting of a core component which is of polyester and a sheath component which is of modified polyester containing 4 to 15wt.% of the third comonent of diol added to polyester. This mesh fabric is irradiated with ultraviolet ray comprising a 320nm or lower wavelength component at least, at 0.5Joule/cm and then masking resin is applied to the fabric. This screen gauze is ideally compatible with the masking resin from a viewpoint of adhesive properties and is highly resistant against printing wear. Further, the screen gauze has an excellent printing resolution, and can be manufactured at low cost.
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Patent Agency Ranking
公开(公告)号：JPH04100914A
公开(公告)日：1992-04-02
申请号：JP21008390
申请日：1990-08-07
Applicant: TORAY INDUSTRIES
Inventor： ONDA TAKAYOSHI , KIDAI AKIRA , FUKUHARA MOTOTADA
Abstract: PURPOSE:To obtain the subject high-strength and high-elastic modulus monofilament, having a breaking strength, breaking elongation and elastic modulus satisfying specific ranges with a specified value of above of knot strength thereof, capable of providing screen gauzes under a high tension and suitable for highly precise printing. CONSTITUTION:The objective monofilament is composed of polyethylene-2,6- naphthalate monofilament and simultaneously satisfying >=6.0(g/d) breaking strength, 3-30 (%) breaking elongation and >=170(g/d) elastic modulus with >=3.5g(g/d) knot strength. Furthermore, a polymer having 0.55-1.0 intrinsic viscosity [eta] (35 deg.C) is preferably employed as the polymer used for the spinning.
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公开(公告)号：JPH0382819A
公开(公告)日：1991-04-08
申请号：JP21569389
申请日：1989-08-21
Applicant: TORAY INDUSTRIES
Inventor： KIDAI AKIRA , ONDA TAKAYOSHI , FUKUHARA MOTOTADA
Abstract: PURPOSE:To provide the subject filament composed of a polyester containing alumina particles having a specific average particle diameter, causing little generation of scum, having high tenacity and modulus and suitable for producing a screen gauze having excellent transparency. CONSTITUTION:The objective filament is composed of a polyester containing 0.01-3wt.% of alumina particles having an average particle diameter of 0.01-0.2mum and has a tenacity of >=5g/d and a diameter of =60% of the activated alumina is gamma- or delta-alumina.
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公开(公告)号：JP2002180333A
公开(公告)日：2002-06-26
申请号：JP2000376515
申请日：2000-12-11
Applicant: TORAY INDUSTRIES
Inventor： MOCHIZUKI KATSUHIKO , KIDAI AKIRA , MAEDA YUHEI
Abstract: PROBLEM TO BE SOLVED: To produce a polyester-based short fiber exhibiting excellent crimp- developing ability and capable of obtaining a high-quality fabric excellent in soft stretchability. SOLUTION: The polyester-based short fiber having latent crimp-developing property is characterized in that a polyester-based polymer A is a polyester mainly consisting of polytrimethylene terephthalate and a polyester-based polymer B is a fiber-forming polyester containing >=0.1 wt.% particles having 0.01-2 μm average particle diameter in a conjugated fiber obtained by laminating the two kinds of polyester-based polymers A and B side by side in the direction of fiber length.
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公开(公告)号：JP2001207340A
公开(公告)日：2001-08-03
申请号：JP2000020006
申请日：2000-01-28
Applicant: TORAY INDUSTRIES
Inventor： OCHI TAKASHI , KIDAI AKIRA , FUKUHARA MOTOTADA
Abstract: PROBLEM TO BE SOLVED: To provide a low-cost method for producing a partially hollow polyester yarn for forming a fabric capable of solving defects of the prior art and excellent in touch feeling, fabric surface aesthetic properties and lightweight properties. SOLUTION: This method for producing a partially hollow polyester yarn is characterized in that a core-sheath conjugate yarn comprising (A) a polymer which is substantially a polyester and arranged in a sheath part and (B) a polymer having a greater temperature dependence of elongational viscosity than that of the polymer (A) and arranged in an amount of 2-15 wt.% based on the total weight of the core-sheath conjugate yarn in a core part is spun at
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公开(公告)号：JP2000328359A
公开(公告)日：2000-11-28
申请号：JP12880099
申请日：1999-05-10
Applicant: TORAY INDUSTRIES
Inventor： OCHI TAKASHI , KIDAI AKIRA , SATO MASAYUKI
Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a polyester shrinkage difference blended yarn, by which various problems on the production method by the spinning and blending method for the shrinkage difference blended yarn can be solved, and by which the polyester shrinkage difference blended yarn not causing irregular dyeing and the like and having a good quality can be produced in good productivity at a low cost. SOLUTION: This method for producing a polyester blended yarn comprises simultaneously melt-spinning two or more kinds of fibers which have a difference between their orientation degrees, and then drawing the obtained undrawn orientation degree difference blended yarn in a drawing ratio of 0.35 to 0.55 time the breaking drawing ratio of the lowest orientation fibers at a drawing temperature of 85 to 110 deg.C and at a heat set temperature of 110 to 150 deg.C.
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