{"id":774,"date":"2023-03-01T04:13:47","date_gmt":"2023-03-01T04:13:47","guid":{"rendered":"https:\/\/silks.csb.gov.in\/balaghat\/?page_id=774"},"modified":"2023-03-01T06:24:18","modified_gmt":"2023-03-01T06:24:18","slug":"processing-of-tasar-cocoons","status":"publish","type":"page","link":"https:\/\/silks.csb.gov.in\/balaghat\/processing-of-tasar-cocoons\/","title":{"rendered":"Processing of Tasar Cocoons"},"content":{"rendered":"<div style=\"width:760px;height:650px;overflow:auto;margin:0px;padding: 0px 15px 0px 15px\">\n<h1 align=\"center\">Processing of Tasar Cocoons<\/h1>\n<h5>1. Tasar Cocoon Sorting<\/h5>\n<h3 align=\"center\"><img decoding=\"async\" src=\"https:\/\/silks.csb.gov.in\/ballia\/wp-content\/uploads\/sites\/5\/2014\/03\/cs1.jpg\" alt=\"Silks\" \/><\/h3>\n<h5>Salient  features of technology:<\/h5>\n<ul>\n<li>User friendly, easy to  operate and occupies less space.<\/li>\n<li>Traditionally, the cocoons are separated manually without the  use of any equipment.<\/li>\n<li>This invention shall help to separate the cocoons in a  systematic manner, into A, B and C grade cocoons, with capacity to separate  40000 to 50000 numbers of Tasar cocoons in one hour time with 99 % accuracy.<\/li>\n<li>The design and development of this machine is aimed at to  overcome the drawbacks faced in the manual separation of the cocoons being  practiced in the field. <\/li>\n<\/ul>\n<h5>2. Tasar Cocoon Cooking<\/h5>\n<p><strong>2.1. Wet Reeling:<\/strong> <\/p>\n<p>Tasar cocoons cannot be cooked  with plain water like Mulberry cocoons, the process of cooking \/ softening of  tasar cocoons is entirely different which allows the cocoons to boil with  chemicals and to facilitate for easy unwinding of filaments. <\/p>\n<h3 align=\"center\"><img decoding=\"async\" src=\"https:\/\/silks.csb.gov.in\/ballia\/wp-content\/uploads\/sites\/5\/2014\/03\/cs2.jpg\" alt=\"Silks\" \/><\/h3>\n<p><strong>2.1.1 Open pan cooking technique <\/strong><\/p>\n<p>Cooking of tasar cocoons by using Hydrogen peroxide  and soda ash method has been popularized by CSTRI specially for wet reeling.  Central Silk Technological Research Institute has standardized this method of  cooking, which gives better tenacity as well as elongation compared to  traditional cooking. This cooking is particularly suitable for wet reeling.<\/p>\n<p>Cooking process developed by CSTRI has two stages as  explained below. <\/p>\n<p><strong>First stage:<\/strong><\/p>\n<p> The tasar cocoons are taken in a metal cage, immersed  in plain water and boiled for about 40 minutes. Care must be taken to ensure  that the cocoons are not floating in the bath during entire process of cooking.  Cocoons in the bath are allowed to cool for 30 minutes.<\/p>\n<p><strong>Second Stage:<\/strong><\/p>\n<p>Cocoons are then transferred to the next vessel  containing the chemicals dissolved in warm water (45&ordm;C &ndash; 60&ordm;C) for 20  minutes, depending upon shell weight with the following recipe:<\/p>\n<p>Soda&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 8 gm\/litre&nbsp;&nbsp;&nbsp; <\/p>\n<p>Hydrogen peroxide&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 10  ml\/ltr<\/p>\n<p>Sodium  Silicate&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 8 gm\/litre<\/p>\n<p>Cocoons are then deflossed and taken for wet reeling.<\/p>\n<h5>3. CSTRI Two in one Reeling  cum Twisting Machine<\/h5>\n<h3 align=\"center\"><img decoding=\"async\" src=\"https:\/\/silks.csb.gov.in\/ballia\/wp-content\/uploads\/sites\/5\/2014\/03\/cs3.jpg\" alt=\"Silks\" \/><\/h3>\n<h5>Salient  features of technology:<\/h5>\n<ul>\n<li>HDPE Reels have been provided to reel the Tasar  and Muga cocoons without imparting twist to the reeled yarn. Reeling is done on  front side of the machine.<\/li>\n<li>On the rear end of machine, twisting of reeled  silk can be done, which can also be operated simultaneously. <\/li>\n<li>The production of the reeling machine is about  350 gms\/8 hours.<\/li>\n<li>TPI of 7 to 12 turns per inch can be imparted on  the machine as compared to the 5 to 9 in the earlier version.<\/li>\n<li>Suitable for both Dry &amp; Wet Reeling to  produce very fine denier yarn<\/li>\n<li>Machine designed ergonomically<\/li>\n<ul>\n<li>Reduces  fatigue <\/li>\n<li>All  machine controls easily reachable from the sitting position<\/li>\n<li>Energy  optimization<\/li>\n<\/ul>\n<li>Suitable to twist single &amp; 2ply yarn<\/li>\n<li>Suitable to produce both Warp &amp; Weft Yarn<\/li>\n<li>Optimized to retain better Tensile and Cohesion  properties<\/li>\n<\/ul>\n<h5>4. CSTRI motorized reeling cum twisting machine<\/h5>\n<h3 align=\"center\"><img decoding=\"async\" src=\"https:\/\/silks.csb.gov.in\/ballia\/wp-content\/uploads\/sites\/5\/2014\/03\/cs4.jpg\" alt=\"Silks\" \/><\/h3>\n<h5>Salient  features of technology:<\/h5>\n<ul>\n<li>Most popular and versatile reeling machine  widely used in muga and tasar silk reeling.<\/li>\n<li>Reeling and twisting of reeled silk done  simultaneously. <\/li>\n<li>The production of the reeling machine is about  250 gms\/8 hours.<\/li>\n<li>TPI of 5 to 9 turns per inch can be imparted on  the machine.<\/li>\n<li>Suitable for both Dry &amp; Wet Reeling of Tasar  yarn<\/li>\n<li>Suitable to twist 2ply yarn<\/li>\n<li>Suitable to produce Warp Yarn<\/li>\n<li>Ensures better earning potential to the Reeler  in comparison with the traditional reeling methodologies.<\/li>\n<\/ul>\n<h5>5. CSTRI solar operated spinning machine <\/h5>\n<h3 align=\"center\"><img decoding=\"async\" src=\"https:\/\/silks.csb.gov.in\/ballia\/wp-content\/uploads\/sites\/5\/2014\/03\/cs5.jpg\" alt=\"Silks\" \/><\/h3>\n<h5>Salient  features of technology:<\/h5>\n<ul>\n<li>It is more  environmental friendly, economically beneficial and easily accessible. <\/li>\n<li>For easy  spinning the flyer is mounted on ball bearing.\n<\/li>\n<li>The said  machine is suitable for aged and handicapped persons and is also a low cost  spinning machine. <\/li>\n<li>The bobbin  provided in the machine is easily removable and the hand spun yarn produced can  be wound on re-reeling machine for making standard skein. <\/li>\n<li>The machine  is provided with variable speed flyer and it is easy to operate. <\/li>\n<\/ul>\n<h5>6. Weaving preparatory<\/h5>\n<h3 align=\"center\"><img decoding=\"async\" src=\"https:\/\/silks.csb.gov.in\/ballia\/wp-content\/uploads\/sites\/5\/2014\/03\/cs6.jpg\" alt=\"Silks\" \/><\/h3>\n<h5>7. CSTRI permeation chamber for  silk sizing <\/h5>\n<h5>Salient  features of technology:<\/h5>\n<ul>\n<li>Reel Permeation Chamber developed by CSTRI to  size reeled silk yarn particularly suitable to size warp yarns of Tasar and  Muga silk.<\/li>\n<li>Sizing: An intermediate process between Reeling  and Re-reeling for enhancement of reeled yarn cohesion.<\/li>\n<li>Improves physical properties like tenacity,  elongation and cohesion. <\/li>\n<li>The sized yarn can directly be used as warp as  substitute to Korean \/ Chinese tasar silk, on Handlooms, Power looms and  Shuttle less looms without imparting any twist. <\/li>\n<li>This ultimately increases the on loom weaving  efficiency due to improved quality of the sized warp.&nbsp;<\/li>\n<\/ul>\n<p>Using the above CSTRI tasar reeling  technology, warp quality Tasar silk can be produced form the available Indian  tasar cocoons. <\/p>\n<h5>Source:<\/h5>\n<p>Vanya Silk Reeling Division, Central Silk  Technological Research Institute, Bangalore<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Processing of Tasar Cocoons 1. Tasar Cocoon Sorting Salient features of technology: User friendly, easy to operate and occupies less space. Traditionally, the cocoons are separated manually without the use of any equipment. This invention shall help to separate the cocoons in a systematic manner, into A, B and C grade cocoons, with capacity to [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_links_to":"","_links_to_target":""},"_links":{"self":[{"href":"https:\/\/silks.csb.gov.in\/balaghat\/wp-json\/wp\/v2\/pages\/774"}],"collection":[{"href":"https:\/\/silks.csb.gov.in\/balaghat\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/silks.csb.gov.in\/balaghat\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/silks.csb.gov.in\/balaghat\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/silks.csb.gov.in\/balaghat\/wp-json\/wp\/v2\/comments?post=774"}],"version-history":[{"count":4,"href":"https:\/\/silks.csb.gov.in\/balaghat\/wp-json\/wp\/v2\/pages\/774\/revisions"}],"predecessor-version":[{"id":802,"href":"https:\/\/silks.csb.gov.in\/balaghat\/wp-json\/wp\/v2\/pages\/774\/revisions\/802"}],"wp:attachment":[{"href":"https:\/\/silks.csb.gov.in\/balaghat\/wp-json\/wp\/v2\/media?parent=774"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}