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Conventional approaches using crimping polyester fibers yield drape similar to cotton but retain a smooth synthetic feel and lack cotton’s soft dryness. The invention determines pitch and twisted sections under applied load, emphasizing a preferred 0.5–0.1 mm pitch and noting processing difficulty beyond limits.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":40,"@type":76,"position":81},"https://docshare.wps.com/document/research-report/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/twisted-fibers-patent-bureau-of-japan-official-gazette-for-unexamined-patents/323269/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/twisted-fibers-patent-bureau-of-japan-official-gazette-for-unexamined-patents/323269.png","ImageObject",300,407,{"name":92,"@type":93},"Emma Wilson","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-23","2026-09-21",true,{"@type":102,"interactionType":103,"userInteractionCount":44},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What defines the twisted fibers in this invention?","Question",{"text":112,"@type":113},"The twisted fibers are made from synthetic fibers and have a twist pitch of 1 mm or less, enabling a cotton-like dry drape.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"Why does the invention focus on twist pitch?",{"text":117,"@type":113},"Conventional fibers with larger twist pitch yield a smooth synthetic feeling even if drape resembles cotton. Reducing twist pitch compared with typical crimping processes produces a drape similar to cotton.",{"name":119,"@type":110,"acceptedAnswer":120},"What materials and conditions are preferred?",{"text":121,"@type":113},"Synthetic fibers made from polymer compounds such as polyester are preferred, with preferred denier in the range of 0.5 to 2 denier and a particularly preferred twist pitch of 0.5 to 0.1 mm.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},323269,1790515182,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":39,"category_name":40,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":44,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":145,"preview_page_count":4},3848291630094,"https://eur-avatar.wpscdn.com/davatar_085a072bc5b1113ac321206ff7593b45","Shida,Eio  \nTwisted fibers /by Eio Shida and HajimeYasuda.  \n9 p.:ill.  \nPatent(Japanese)No.59-100713(1984).Filed:  TRANSLATION NO.4581.  \n# TRANSLATIONPATENT BUREAU OF JAPANOFFICIAL GAZETTE FOR UNEXAMINED PATENTS\n\nJapanese Patent Application Publication Rokai:Sho 59(1984)-100713  \nPublication Date:  June ll,1984  \nNumber of Inventions:  1  \nRequest for Examination:(Not yet requested).  (Total of 3pages)  \nInternational ClassIntrabureau Numbers  \nD 01 F 6/626791-4L  \nTWISTED FIBERS  \nApplication No.:Sho 57(1982)-211867  \nApplication Date:December l,1982  \nInventors:Eio Shida  \n1400-125,Shin'no-cho,Otsu-shiHajime Yasuda9-2,3-chome,Kita Odo,Otsu-shi  \nApplicant:Toyobo Co.,Ltd.2-8,2-chome,Doshima-hama,Kita-ku,Osaka-shi  \nAgent:Patent Attorney Io Itano and one other  \n# Specification\n\n1.  Title of Invention  \nTwisted Fibers  \nDigitized by the Internet Archivein 2017  \nhttps://archive.org/details/twistedfibers00shid  \n# 2.  Scope of Patent Claim\n\n(1)  Twisted fibers which are characterized by the factthat they are made from synthetic fibers and that they havea twist with a twist pitch of l mm or less.  \n(2)  The twisted fibers in item l of Scope of PatentClaim where the twist pitch is 0.5-0.1 mm.  \n(3)The twisted fibers in items l and 2 of Scope ofPatent Claim where the synthetic fibers are polyesterfibers.  \n# 3.  Detailed Explanation of Invention\n\nThis invention pertains to twisted fibers made fromsynthetic fibers.  \nAttempts have been made to provide synthetic fiberswith the drape of natural fibers.  It is a known fact thatcrimped fibers given many twists by crimping polyesterfibers with a smooth cross section are obtained as fiberswith a drape similar to that of natural cotton.  \nNevertheless,the above-mentioned conventional fibers stillhave the smooth feeling characteristic of synthetic fibers,even though their drape is similar to that of cotton andtherefore,they lack the dry,soft drape of cotton fibers.  \nThe inventors carried out studies focusing on obtainingthe dry drape of cotton fibers by increasing the number oftwisted applied during the crimping process.  \nAs a result,they compleed this invention upon discoveringthat a drape similar to that of cotton can be obtained byproviding a much smaller twist pitch in comparison to the  \ntwist pitch that is normally obtained by conventionalcrimping processes(2.5 to 1.2 mm).  \nThat is,this invention is twisted fibers made fromsynthetic fibers with a twist pitch of l mm or less.  \nThe twist pitch in this invention is the mean distanceL of twisted section la,where the fiber axis is rotated by60 degreees or more while a load of approximately 1/30 g per1 denier is applied to single fiber l in the figure.  Thenumber of above-mentioned twisted sections la per l cm offiber length is determined for 20 single fibers by thefollowing formula:  \nThe above-mentioned twist pitch must be l mm or less.  Atwist pitch of 0.5-0.1 mm is particularly preferred.  Whenthe above-mentioned twist pitch exceeds l mm,a smoothfeeling similar to that obtained by conventional crimpingprocesses remains and the drape of natural cotton fiberscannot be obtained.  On the other hand,when the twist pitchis less than 0.1 mm,processing is difficult.  Moreover,thedirection of the twist in above-mentioned twisted section lamay be to the right or left,or may be a combination ofboth.  In addition,spiral twists of coils where the entirelength of the fiber is twisted at a constant twist angle isundesirable because the drape of natural cotton cannot be  \nobtained,even though the number of twists (number of coils)  \nis increased.  \nThe synthetic fibers in this invention are fibers madefrom fiber-moldable polymer compounds,such as polyester,polyamide,polyacrylonitrile,etc.  Polyester fibers areparticularly preferred.  When this polyester fiber is used,the drape of natural cotton can be obtained with very littlesmooth feeling in comparison to the case where othersynthetic fibers are used.  Moreover,flatting agents andimprovers can","cbCaivKKj3zT3i1Q","https://ap.wps.com/l/cbCaivKKj3zT3i1Q","pdf",748938,22,"English","# Specification\n## Title of Invention\n## Scope of Patent Claim\n## Detailed Explanation of Invention","[{\"question\":\"What defines the twisted fibers in this invention?\",\"answer\":\"The twisted fibers are made from synthetic fibers and have a twist pitch of 1 mm or less, enabling a cotton-like dry drape.\"},{\"question\":\"Why does the invention focus on twist pitch?\",\"answer\":\"Conventional fibers with larger twist pitch yield a smooth synthetic feeling even if drape resembles cotton. Reducing twist pitch compared with typical crimping processes produces a drape similar to cotton.\"},{\"question\":\"What materials and conditions are preferred?\",\"answer\":\"Synthetic fibers made from polymer compounds such as polyester are preferred, with preferred denier in the range of 0.5 to 2 denier and a particularly preferred twist pitch of 0.5 to 0.1 mm.\"}]","Twisted Fibers - Patent Bureau of Japan Official Gazette for Unexamined Patents | PDF",1789964785,55]