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The invention targets control of filament elongation, addressing conventional drawbacks where excessive elongation makes control difficult. By analyzing how air flow rate and suction-jet end temperature affect cooling, birefringence, and draw point behavior, the disclosure develops a method for achieving controlled filament elongation.",{"@graph":69,"@context":123},[70,84,106],{"@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/high-speed-spinning-apparatus-japanese-patent-application-publication-48-19886-specification/324293/",{"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/high-speed-spinning-apparatus-japanese-patent-application-publication-48-19886-specification/324293.png","ImageObject",300,407,{"name":92,"@type":93},"Seraphina","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-30","2026-09-21",true,{"@type":102,"interactionType":103,"userInteractionCount":105},"InteractionCounter",{"@type":104},"ViewAction",14,{"@type":107,"mainEntity":108},"FAQPage",[109,115,119],{"name":110,"@type":111,"acceptedAnswer":112},"What is the core function of this high speed spinning apparatus?","Question",{"text":113,"@type":114},"It extrudes a molten high-molecular polymer from a nozzle and takes it up at high speed using a suction jet.","Answer",{"name":116,"@type":111,"acceptedAnswer":117},"What problem in conventional apparatus does the invention address?",{"text":118,"@type":114},"Conventional high speed spinning causes great filament elongation, making control of that elongation difficult.",{"name":120,"@type":111,"acceptedAnswer":121},"How does air flow influence the filament in the described invention?",{"text":122,"@type":114},"The disclosure explains that filament elongation control is related to air flow rate, and that birefringence is controlled primarily by the flow rate of the ejected air rather than the end temperature of the suction jet.","https://schema.org",{"og:url":83,"og:type":125,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":127,"canonical":83},"index,follow",{"doc_id":129,"site_id":62},324293,1790197186,{"code":4,"msg":5,"data":132},{"doc_id":129,"user_id":133,"nickname":92,"user_avatar":134,"doc_module":4,"category_id":39,"category_name":40,"doc_title":65,"doc_description":67,"doc_content":135,"file_id":136,"file_url":137,"file_type":138,"file_size":139,"view_count":105,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":41,"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},962075114101,"https://ap-avatar.wpscdn.com/avatar/e000253a75eb197efd?x-image-process=image/resize,m_fixed,w_180,h_180&k=1780044092746381165","Koyano,K.,and Emi,Y.  \nHigh speed spinning apparatus.13 p.  \nPatent(Japanese)No.48-19886(June,1973)Filed:  TRANSLATION NO.4475  \nT R A N S L A T I O N  \nPATENT BUREAU OF JAPAN  \nOFFICIAL GAZETTE FOR EXAMINED PATENTS  \nJapanese Patent Application Publication 48-19886  \nPublication Date:  June 16,1973  \nNumber of Inventions:  1 (Total of 6 pages)  \nInternational ClassJapanese Class  \nD 01 d 5/0842 A 33  \n42 A 3  \nApplication No.:  44-15694  \nApplication Date:  March 1,1969  \nInventors:K.Koyano  \n6-12 Nishi Iosumi-choTakatsuki-shi  \nY.Emi  \n11-1 Yanagawa-choTakatsuki-shi  \nApplicant:Teijin Limitedl Umeda,Kita-kuOsaka  \nPatent Attorney:  \nH.Kasegumi  \n# SPECIFICATION\n\n1.  Title of InventionHigh Speed Spinning Apparatus  \n2.Brief Description of the Figures  \nFigure 1 is a diagram of a high speed spinning apparatusused in the past.  Figure 2(a)shows the relationship betweenthe flow rate of air in the suction jet and the temperature  \nDigitized by the Internet Archivein 2017  \nhttps://archive.org/details/highspeedspinnin00koya  \nof the end of the suction jet of the above apparatus.  Figure2(b)shows the relationship between the birefringence ofthe filament obtained with this apparatus and the flow rateof air.  Figure 3 shows the elongation under load curvesof filaments obtained with this device;(a)depicts the curvewhen the temperature at the end of the suction jet is lowand(b)depicts the curve when that temperature is high.Figure 4 is a diagram of the high speed spinning apparatusof this invention.  Figure 5 is a cross section showing anexample of the contact temperature control device used inthis apparatus.  \n# 3.  Detailed Explanation of the Invention\n\nThis invention relates to a high speed spinning apparatusthat extrudes a molten high-molecular polymer from a nozzleand takes it up at high speed with a suction jet.  Theobjective of this invention is to provide a means forcontrolling the elongation of the filament obtained.  \nSince the filament spun with a high speed spinningapparatus constructed of a discharge nozzle and a suctionjet has a degree of orientation near that of drawn yarn,it possesses the advantages that a subsequent drawing processis unnecessary or that it can be laminated as a web,as is,to form a non-woven fabric.  However,the high speed spinningapparatus used in the past has the drawbacks that the elongationof the filament is great and control of this elongation isdifficult.  As a result of an intensive investigation,the  \npresent inventors determined the factors that make controlof elongation difficult and succeeded in developing thepresent invention.  \nThe drawbacks of the conventional apparatus and theircauses will now be explained using the figures.  Figure lis a high speed spinning apparatus used in the past.  Moltenhigh-molecular polymer is extruded from a discharge nozzle1 and,after resistance is provided by contact with the end2 of the suction jet,is taken up by a suction jet 3.  Inthis instance,the air for the suction jet enters suctionjet 3 via a flowmeter 4,a filter 5,a regulator 6,and acock 7;when this air is ejected at high speed from slit  \n8,it takes up the filament from the end 2 of the suctionjet and ejects it downward 9.  Consequently,the filamentis stretched downward 9 with the place of contact with theend 2 of the suction jet as the draw point.  In thisconventional apparatus the ejected air has the function oftaking up the filament at high speed,but it also has theeffect of cooling the suction jet.  This is explained byFigure 2.  Figure 2(a)shows the relationship between thetemperature at the end 2 of the suction jet and the flow  \nrate of the ejected air when the distance between the dischargenozzle i and the end 2 of the suction jet is varied in thecase of polyethylene terephthalate extruded at a rate of13 g/min from 72 discharge nozzles having a diameter of 0.23mm at a temperature of 295℃.  This figure shows that the  \ntemperature of the end 2 of the suction jet declines as theflow rate of air ","cbCaivzV5J67fIVD","https://ap.wps.com/l/cbCaivzV5J67fIVD","pdf",1049397,"English","# SPECIFICATION\n## Title of Invention\n## Brief Description of the Figures\n## Detailed Explanation of the Invention","[{\"question\":\"What is the core function of this high speed spinning apparatus?\",\"answer\":\"It extrudes a molten high-molecular polymer from a nozzle and takes it up at high speed using a suction jet.\"},{\"question\":\"What problem in conventional apparatus does the invention address?\",\"answer\":\"Conventional high speed spinning causes great filament elongation, making control of that elongation difficult.\"},{\"question\":\"How does air flow influence the filament in the described invention?\",\"answer\":\"The disclosure explains that filament elongation control is related to air flow rate, and that birefringence is controlled primarily by the flow rate of the ejected air rather than the end temperature of the suction jet.\"}]","High Speed Spinning Apparatus - Japanese Patent Application Publication 48-19886 - Specification | PDF",1789967545,76]