-
公开(公告)号：US10464776B2
公开(公告)日：2019-11-05
申请号：US15567797
申请日：2016-04-27
Applicant: TORAY INDUSTRIES, INC.
Inventor： Keiichi Ishio , Koichi Aizu , Masaki Nakano
Abstract: Provided is a method for manufacturing a combined yarn bundle including the steps of bringing the two or more carbon fiber precursor yarns which travel approximately parallel to one another into contact with a first roller at a wrap angle of 20° or more. Then, the two or more carbon fiber precursor yarns are split into two and brought into contact with a pair of second rollers, so that the carbon fiber precursor yarns are rotated approximately 90° between the first roller and the pair of second rollers. Next, the carbon fiber precursor yarns delivered from one second roller are brought into contact with a third front roller and a third rear roller, and the carbon fiber precursor yarns delivered from the other second roller are brought into contact with the third rear roller without bringing them into contact with the third front roller, so that these carbon fiber precursor yarns are combined on the third rear roller. Thereafter, the carbon fiber precursor yarns delivered from the third rear roller are brought into contact with a fourth roller to obtain a combined yarn bundle. A ratio of a distance L between axes of the first roller and of the pair of second rollers to a yarn width W of the carbon fiber precursor yarn on the first roller, L/W, is 18 or more and a tension of the combined yarn bundle after delivered from the fourth roller is 0.11 cN/dtex or more.
-
公开(公告)号：US20190390370A1
公开(公告)日：2019-12-26
申请号：US16480884
申请日：2018-01-30
Applicant: Toray Industries, Inc.
Inventor： Masaki Nakano , Kengo Hayashida , Hirotada Endo
Abstract: A method produces an acrylic fiber bundle that are cleaned in one or more washing baths including an inflow portion and an outflow portion for a cleaning solution; at least one of the washing baths is a counterflow washing bath in which the cleaning solution flows into from the inflow portion located at a lower stream side position of a traveling direction of coagulated thread bundles, and flows out from the outflow portion located at an upper stream side position of the traveling direction of the coagulated thread bundles; and an average of coefficients of variation CV of linear speeds of the cleaning solution in the inflow portion of the counterflow washing bath is 0.30 or less, and an average of coefficients of variation CV of linear speeds of the cleaning solution in the outflow portion of the counterflow washing bath is 0.30 or less.
-
公开(公告)号：US20180134510A1
公开(公告)日：2018-05-17
申请号：US15567797
申请日：2016-04-27
Applicant: TORAY INDUSTRIES, INC.
Inventor： Keiichi Ishio , Koichi Aizu , Masaki Nakano
IPC: B65H51/015 , D01H13/02 , D01F9/14
Abstract: Provided is a method for manufacturing a combined yarn bundle including the steps of bringing the two or more carbon fiber precursor yarns which travel approximately parallel to one another into contact with a first roller at a wrap angle of 20° or more. Then, the two or more carbon fiber precursor yarns are split into two and brought into contact with a pair of second rollers, so that the carbon fiber precursor yarns are rotated approximately 90° between the first roller and the pair of second rollers. Next, the carbon fiber precursor yarns delivered from one second roller are brought into contact with a third front roller and a third rear roller, and the carbon fiber precursor yarns delivered from the other second roller are brought into contact with the third rear roller without bringing them into contact with the third front roller, so that these carbon fiber precursor yarns are combined on the third rear roller. Thereafter, the carbon fiber precursor yarns delivered from the third rear roller are brought into contact with a fourth roller to obtain a combined yarn bundle. A ratio of a distance L between axes of the first roller and of the pair of second rollers to a yarn width W of the carbon fiber precursor yarn on the first roller, L/W, is 18 or more and a tension of the combined yarn bundle after delivered from the fourth roller is 0.11 cN/dtex or more.
-
公开(公告)号：US10883195B2
公开(公告)日：2021-01-05
申请号：US16480884
申请日：2018-01-30
Applicant: Toray Industries, Inc.
Inventor： Masaki Nakano , Kengo Hayashida , Hirotada Endo
IPC: B08B3/04 , D01D5/06 , D06B3/04 , D06M11/05 , D06M13/248 , D01D10/06 , D01F6/18 , D01F9/22 , C01B32/05
Abstract: A method produces an acrylic fiber bundle that are cleaned in one or more washing baths including an inflow portion and an outflow portion for a cleaning solution; at least one of the washing baths is a counterflow washing bath in which the cleaning solution flows into from the inflow portion located at a lower stream side position of a traveling direction of coagulated thread bundles, and flows out from the outflow portion located at an upper stream side position of the traveling direction of the coagulated thread bundles; and an average of coefficients of variation CV of linear speeds of the cleaning solution in the inflow portion of the counterflow washing bath is 0.30 or less, and an average of coefficients of variation CV of linear speeds of the cleaning solution in the outflow portion of the counterflow washing bath is 0.30 or less.
-
-
-
Search Results
4
records
(took 0.014 seconds)
