JP2004176193A

JP2004176193A - Method for producing bulky raw silk and manufacturing apparatus therefor

Info

Publication number: JP2004176193A
Application number: JP2002341027A
Authority: JP
Inventors: Chiyuki Takabayashi; 千幸高林
Original assignee: National Institute of Agrobiological Sciences
Current assignee: National Institute of Agrobiological Sciences
Priority date: 2002-11-25
Filing date: 2002-11-25
Publication date: 2004-06-24
Anticipated expiration: 2022-11-25
Also published as: JP3950962B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for producing structurally bulky raw silk, by which the bulky raw silk is not returned to a yarn in the same state as that of ordinary raw silk even if the bulky raw silk is stretched in a wet state, and a manufacturing apparatus therefor. <P>SOLUTION: The method for producing the bulky raw silk comprises passing cocoon filaments drawn out from boiled cocoons into a gap between members of a feed means constituted of a pair of the upper and lower members in a divided state as they are, sending out the cocoon filaments, then mutually interlacing the cocoon filaments in an air-jet nozzle to form a bulky raw silk, blowing-out the raw silk from the nozzle, winding the raw silk in an eliminated state of internal stress of yarns under no tension or winding the raw silk under low tension while twisting to give the bulky raw silk. A member having a tapered shape in the front view to pass the cocoon filaments is used as at least the lower member of the feed means and each of the cocoon filaments is passed in a different sending ratio among the yarns of the cocoon filaments. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、嵩高生糸の製造法及びその製造装置に関し、特に、煮熟繭から引き出した繭糸により生糸を繰製する際に、嵩高性のある生糸を繰製する方法及びその繰製装置に関する。
【０００２】
【従来の技術】
従来から、繰糸中に生糸に嵩高性を持たせる方法として、煮熟繭から引き出した繭糸を回転する形成枠に綾を振り、網状になるように巻き付け、形成枠から引き出した「網状生糸（ネットロウシルク）」などが知られている（例えば、非特許文献１参照）。
また、煮熟繭から引き出した繭糸を収束させた後に緩速度で引き上げ、その後容器の中へ無張力状態で落とし込む「バルキーシルク」が知られている（例えば、非特許文献２参照）。
【０００３】
【非特許文献１】
高林千幸他（１９９６）、ネットロウシルク自動繰糸機構の開発、製糸絹研究会誌（５）ｐ．２６−３１
【非特許文献２】
浦沢日出夫（１９８５）、バルキーシルクに関する試験、長野県繭検業報、６０、５７
【０００４】
【発明が解決しようとする課題】
通常の生糸は、複数粒の煮熟繭から引き出した繭糸を繊維軸方向に引き揃え、繭糸表面に存在する粘着性タンパク質であるセリシンで抱合・接着してストレートな状態で１本の糸条としている。そのため、着物やブラウス等の薄地で平滑性を必要とする素材には適するが、嵩高で空気を含み柔軟性を必要とする外衣用類には必ずしも適さないという問題がある。そこで、特に外衣用類やショール、ネックウェア、タペストリー等に適し、嵩高性を有する生糸を高能率に製造する方法が求められている。
【０００５】
しかしながら、上記「網状生糸」は、嵩高性が得られても毛羽が発生するなどの欠点を有し、また、「バルキーシルク」は、糸全体にクリンプが生じているだけで糸が構造的な嵩高となっていないため、それを一旦濡らして再び緊張しながら乾燥すると、通常の生糸に極めて近い形態の糸に戻ってしまうという問題がある。
本発明の課題は、上記従来の技術の問題点を解決することにあり、濡れた状態で緊張させても通常の生糸と同様な形態の糸に戻るようなこと等がない、構造的に嵩高な生糸を繰製する方法及びその製造装置を提供することにある。
【０００６】
【課題を解決するための手段】
本発明の第一の嵩高生糸製造法は、煮熟繭から引き出した繭糸を上下１対の部材で構成されたフィードローラ又はフィードギアであって、繰出手段として機能する部材間に分繊したまま挿通して積極的に送り出し、その後にエアージェットノズル内で繭糸相互を交絡して嵩高性を持たせた生糸とし、この嵩高生糸をエアージェットノズルから吹き出し、糸条の内部応力をなくした状態で繰枠に無張力で巻き取るか、又は撚糸を行いながらボビンに低張力で巻き取ることにより嵩高生糸を得ることを特徴とする。
【０００７】
上記煮熟繭から引き出した繭糸を繰出手段の部材間に分繊したまま挿通する前に、この繭糸を熱風で乾燥することにより繭糸の分繊状態を進ませ、かつ繭糸間の乾燥程度を変え、次いで挿通することを特徴とする。これにより、その後の繭糸の交絡状態を変えられるようにできる。
また、繭糸を繰出手段の部材間に分繊したまま挿通する際に、分繊した繭糸を広げた形で挿通すると共に、引き出す繭糸の糸条の中でそれぞれの糸条の送出し率が異なるようにして挿通することを特徴とする。これにより、繰出手段を通過した糸条の中の繭糸の引き揃え状態を変え、膨らみのある生糸糸条を得ることができる。
【０００８】
繰出手段のうちの少なくとも下方部材として、繭糸を挿通する正面側から見て谷形若しくは円弧形にテーパをつけた形状又は一方向にテーパをつけた傾斜形の形状のものを用い、そこへ分繊した繭糸を広げた形で挿通すると共に、引き出す繭糸の糸条の中でそれぞれの糸条の送出し率が異なるようにして挿通することを特徴とする。これにより、繰出手段を通過した糸条の中の繭糸の引き揃えを変え、膨らみのある生糸糸条を得ることができる。
繭糸を繰出手段の部材間に分繊したまま挿通する際に、分繊した繭糸の収束幅を予め設定した周期で制御することを特徴とする。この場合、収束幅を細くすれば、交絡状態を少な目のストレート状の糸条とすることができ、逆に収束幅を広くすれば、交絡状態を粗とした糸条とすることができ、又は節に類似した部分を繭糸の収束幅の周期やパターンで変化するようにすることができる。
【０００９】
繭糸を繰出手段の部材間に分繊したまま挿通した後、送り出した繭糸に対してエアージェットノズルで繭糸相互を交絡する際に、高温のエアーを用いることを特徴とする。これにより、繭糸の乾燥を進ませ、繭糸相互の交絡状態を変えることができる。
煮熟繭から繭糸を引き出す際に、これらの繭糸の中心部へ繭糸以外の合成繊維を挿通し、繭糸と合成繊維とを複合しながら繰糸することにより、交絡嵩高低張力繰製複合生糸を得ることできる。
【００１０】
本発明の第二の嵩高生糸製造法は、煮熟繭から引き出した繭糸を上下１対の部材で構成された第１の繰出手段の部材間に分繊したまま挿通して送り出し、第１のエアージェットノズルで走行している繭糸条に対し直角方向にエアーを吹き付け、送り出しの多い弛んだ繭糸を親糸にあたかも巻き付けるようした糸条とし、次いで第１の繰出手段と同期回転する上下１対の部材で構成された第２の繰出手段の部材間を挿通せしめて送り出し、さらに、第２のエアージェットノズルで走行している繭糸条に対し平行にエアーを吹き付けて糸条を送り出し、糸条の内部応力をなくした状態で繰枠に無張力で巻き取るか、又は撚糸を行いながらボビンに低張力で巻き取ることにより嵩高生糸を得ることを特徴とする。
【００１１】
この発明の場合も、繭糸を第１の繰出手段の部材間に分繊したまま挿通する前に、引き出した繭糸を熱風で乾燥することにより繭糸の分繊状態を進ませ、かつ繭糸間の乾燥程度を変え、次いで挿通することを特徴とし、これにより、その後の繭糸の交絡状態を変えられるようにすることができる。
また、繭糸を繰出手段の部材間に分繊したまま挿通する際に、分繊した繭糸を広げた形で挿通すると共に、引き出す繭糸の糸条の中でそれぞれの糸条の送出し率が異なるように挿通することを特徴とし、これにより、繰出手段を通過した糸条の中の繭糸の引き揃え状態を変え、膨らみのある生糸糸条とすることができる。
【００１２】
上記第１の繰出手段のうちの少なくとも下方部材として、繭糸を挿通する正面側から見て谷形若しくは円弧形にテーパをつけた形状又は一方向にテーパをつけた傾斜形の形状のものを用い、そこへ分繊した繭糸を広げた形で挿通すると共に、引き出す繭糸の糸条の中でそれぞれの糸条の送出し率が異なるようにして挿通することを特徴とし、これにより、繰出手段を通過した糸条の中の繭糸の引き揃えを変え、膨らみのある生糸糸条とすることができる。
【００１３】
繭糸を繰出手段の部材間に分繊したまま挿通する際に、分繊した繭糸の収束幅を予め設定した周期で制御することを特徴とし、その際、収束幅を細くすれば、交絡状態を少な目のストレート状の糸条とすることができ、逆に収束幅を広くすれば、交絡状態を粗とした糸条とすることができ、又は節に類似した部分を繭糸の収束幅の周期やパターンで変化するようにすることができる。
煮熟繭から引き出した繭糸を繰出手段の部材間に分繊したまま挿通した後、送り出した繭糸に対して第１のエアージェットノズルで繭糸相互を交絡する際に、高温のエアーを用いることを特徴とする。これにより繭糸の乾燥を進ませ、繭糸相互の交絡状態を変えることができる。また、繭糸を引き出す際に、それら繭糸の中心部へ繭糸以外の合成繊維を挿通し、繭糸と合成繊維とを複合しながら繰糸して、交絡嵩高低張力繰製複合生糸を得ることができる。
【００１４】
また、本発明の第一の嵩高生糸製造装置は、繰解槽と、繭糸条乾燥手段と、繭糸を挿通するための上下１対の部材で構成された抄出手段と、繭糸相互を交絡して嵩高性を持たせた生糸とするためのエアージェットノズルと、エアージェットノズルから吹き出される嵩高生糸を巻き取るための部材とが、この順序で配置されてなることを特徴とする。
この装置における繰出手段は、少なくとも下方の部材が上記したような谷形若しくは円弧形にテーパをつけた形状又は一方向にテーパをつけた傾斜形の形状あることを特徴とする。また、繭糸以外の繊維を混繊するために、繰解槽の中心部に貫通して通糸管を設け、この通糸管を挿通させた繭糸以外の繊維を繭糸と抱合させながら繰糸させ、繭糸条乾燥手段へ供給できるように構成してもよい。
【００１５】
本発明の第２の嵩高生糸製造装置は、繰解槽と、繭糸条乾燥手段と、乾燥された繭糸を挿通するための上下１対の部材で構成された第１の繰出手段と、この第１繰出手段から送り出された走行している繭糸条に対し直角方向にエアーを吹き付けて送り出すための第１のエアージェットノズルと、送り出された繭糸条を挿通するための、第１の繰出手段と同期回転する上下１対の部材で構成された第２の繰出手段と、走行している繭糸条に対し平行にエアーを吹き付け、送り出すための第２のエアージェットノズルと、第２のエアージェットノズルから吹き出される嵩高生糸を巻き取るための部材とが、この順序で配置されてなることを特徴とする。この装置においても、第１の繰出手段のうちの少なくとも下方部材が、繭糸を挿通する正面側から見て谷形若しくは円弧形にテーパをつけた形状又は一方向にテーパをつけた傾斜形の形状をしていることが好ましい。また、上記したような通糸管を設けることもできる。
【００１６】
上記したように、本発明の嵩高生糸製造法では、煮熟繭から引き出した分繊状態の繭糸を積極的に送り出すために、１対の部材から構成され、下方部材にテーパが付けられている繰出手段の部材間に繭糸を分繊したまま挿通し、分繊した繭糸の収束幅を予め設定した周期で制御することにより、収束幅を細くした時には交絡状態が少なくストレートな糸条となり、逆に収束幅を広めた時には交絡状態が粗な糸条となって、糸条の交絡状態を周期的に変化させることが可能となる。その後、エアージェットノズルから糸条をエアー交絡させながら強制的に排出し、糸条の内部応力をなくして枠に無張力で巻き取るか、撚糸を行いながらボビンに低張力で巻き取ることにより構造的に嵩高な交絡生糸の製造か可能となる。
本発明によれば、繭糸を収束・抱合させて１本の糸条とする際に、糸条を構成する繭糸の送り出し率を変えることにより、濡れた状態で緊張させても通常の生糸と同様な形態の糸に戻るようなことなどがない構造的に嵩高な生糸を繰製することができる。
【００１７】
【発明の実施の形態】
以下、本発明に係わる嵩高生糸の製造方法及びその製造装置の実施の形態について、図１〜８を参照して説明する。図１〜８中、同じ構成要素は同じ参照符号を付けてある。
図１に、嵩高生糸の繰製方法を実施するために用いる、繭糸条の積極的送り出し手段（繰出手段）としてフィードギアを備えている嵩高生糸繰製装置の概要例を示す。
【００１８】
図１において繰解槽１内の煮熟繭２から解離した繭糸を引き上げ、上下１対の部材で構成するフィードギア４及び５間に繭糸を収束することなく分繊したまま挿通する。この時、煮熟繭２から引き出した繭糸条３を適度に乾燥するため、熱風発生装置６から発せられる熱風を公知の繭糸条乾燥用フード７内で拡散しながら繭糸全体に行き渡るようにして繭糸を乾燥させる。フード７は二重構造になっており、熱風発生装置６から発せられる熱風を一旦フード７内の外側に貯めた後、無数の細穴からフード７の中心方向へ熱風が出て繭糸に吹き付け、繭糸を適度に乾燥する機構になっている。この時、熱風発生装置６の温度を制御することにより、繭糸の乾燥程度を任意に変えることができる。
【００１９】
フィードギア４及び５間に挟まれた繭糸３は、フィードギアの回転とともにエアージェットノズル８に送り込まれる。エアーは常に矢印Ａ方向、すなわち糸条の進行方向に強制的に排出されているため、繭糸は、フィードギア４及び５に巻き付くことは殆どなく送り込まれ、積極的に送り出される。フィードギア４及び５間を通過した繭糸は、エアーによって繭糸相互が交絡し、生糸糸条１１としてエアーとともに強制的に排出される。エアージェットノズル８から排出される生糸は、エアーと共に吹き出されるという状態であり、繰枠１２に無張力状態で巻き取られるか、フライヤー方式の撚糸機により撚糸を行いながら低張力でボビンに巻き取られる。エアージェットノズル８へ供給されるエアーは、コンプレッサー１０から温度制御可能な加熱装置９へ供給されたエアーをこの加熱装置で一旦昇温させたものであり、このエアーにより繭糸を乾燥させながら繭糸相互を交絡させる。
【００２０】
図２（ａ）及び（ｂ）は、それぞれ、異なる形状を有するフィードギア４及び５の噛み合わせ状態を説明するための図であり、繭糸を挿通する側からみたギアーの正面図である。このフィードギア４及び５としては、例えば、ゴムや弾性プラスチック等から作製された弾力性を有するものが用いられる。図２（ａ）の下部フィードギア４は、ギアの正面中心部分の直径が細くなるようにギア部分を谷形に加工したものであり、図２（ｂ）はギアの直径が徐々に細くなるように円錐台形状にした傾斜型の例である。図２（ａ）及び（ｂ）に示すフィードギア５は直径が同じ円筒形であるが、フィードギア５はフィードギア４と同じ形状であっても異なった形状でもよい。繭糸条はフィードギア４及び５の噛み合わさった部分へ挿通されるが、図２（ａ）及び（ｂ）中のＡの状態は、上部フィードギア５が下部フィードギア４から離れ、繭糸条の走行を停止させている状態で、図２（ａ）及び（ｂ）中のＢの状態は、両フィードギアが噛み合わさった状態を示している。
なお、上記フィードギア４の正面断面形状は、フィードギアを挿通する繭糸の挿通速度に変化を持たせることができる形状であれば制限はなく、例えば谷型を有する形状であっても、円弧状であってもよい。
【００２１】
図３（ａ）及び（ｂ）は、下方フィードギア４と上方フィードギア５との間へ繭糸条３を挿通する時の繭糸条の幅を制御する状態を、谷型の下方フィードギア４を用いた場合について示す。図３（ａ）は繭糸条の幅を広くした状態を、また、図３（ｂ）は繭糸条の幅を狭くした状態を示す。この繭糸条幅を変えるために、繭糸条がフィードギアに入る手前に、その幅を制御する案内ガイドＷ１及びＷ２を設けてある。これらのガイドは、外部からの電気信号により左右（図中の矢印Ａ及びＢ方向）に作動し、その幅が制御されるように構成されている。このため、フィードギアにより繭糸条を送り出す際に、図３（ａ）に示すフィードギア４の外側部分の繭糸３はフィードギアの中心部分の繭糸３に比べてギアの円周が長い分だけ多く送り出されることになり、送り出し率が多い繭糸と少ない繭糸とが混在した形で糸条が形成される。図３（ｂ）は、図３（ａ）に比べてフィードギア４へ入る繭糸条の幅が狭いため、送り出し率の差の少ない糸条が混在した形となる。案内ガイドＷ１とＷ２との間を更に狭め、フィードギア４の谷の部分へ繭糸条を収束させた形にすると、フィードギアを通過した糸条はストレート状の通常の生糸に近い形態となる。
【００２２】
図４は送り出し率の原理を説明するための図であり、図４（ａ）はフィードギア４の繭糸を挿通する側から見たギア正面図であり、図４（ｂ）はそのフィードギアの側面図である。図４に示したように、谷型フィードギア４の円周の長い部位Ｓ１（直径Ｌ）と、谷部分の円周の最も短い部位Ｓ２（直径Ｒ）とを挿通して繭糸３が送り出される場合、フィードギアの回転数をＱ（ｒｐｍ）とすると直径Ｌ部分での繭糸の送り出し長は、ＬπＱ／ｍｉｎ．であり、直径Ｒ部分での繭糸の送り出し長は、ＲπＱ／ｍｉｎ．である。したがって、Ｓ１部分の方がＳ２部分より（Ｌ−Ｒ）πＱ／ｍｉｎ．だけ多く送り出されることになる。
【００２３】
上記のようにしてフィードギアへ入る繭糸条の幅を制御することにより、繭糸条内のそれぞれの繭糸の送出し率を変えることができる。そのため、例えば、図３中の案内ガイドＷ１とＷ２との間の幅を広くすることにより、送り出される繭糸条の中で、送り出される多くの繭糸は弛み部分が増えるため嵩高性が増し、更に、送り出される多くの繭糸はエアージェットでその弛み部分が強制的に交絡されることになり、節状とすることができる。また、このエアージェットにより、弛んだ部分の繭糸を交絡させるだけでなく、高温のエアーを用いることにより、繭糸に縮れを与え、嵩高な生糸とすることができる。
【００２４】
上記したようなガイド間の幅である繭糸の収束幅と得られた生糸の嵩高さとの関係を表１に示すと共に、その関係をプロットして図５に示す。この生糸は、本発明の方法に従って、繰糸速度４０ｍ／ｍｉｎで繰製したものであり、嵩高さは１ｇ当たりの容積で示す。
（表１）

表１及び図５から明らかなように、繭糸の収束幅を制御することにより所望の嵩高生糸を製造することができる。
【００２５】
図６（ａ）及び（ｂ）は、上記嵩高生糸が得られる原理をモデル的に示したものである。図６（ａ）は、テーパのある傾斜型フィードギア４を用いた場合に、フィードギアから送り出された直後の繭糸３’の状態を示し、フィードギア４の直径が次第に大きくなるに従って繭糸３’の送り長は次第に長くなる状態を示している。この状態でエアージェットノズルへ入ると繭糸条全体は一番短い繭糸に揃えられるため、図６（ｂ）に示すように繭糸に弛みの生ずる部分が生まれ、構造的な嵩高生糸となる。
【００２６】
図７は、本発明の別の実施の形態に係わる嵩高生糸繰製方法を実施するために用いる嵩高生糸繰製装置の概要例を示す。
この装置では、上下１対の部材で構成された第１フィードギア４及び５のうち下部フィードギア４としてテーパを付けた傾斜形のものを用い、このギアの下流側に、順次、走行している繭糸条に対し直角方向にエアーを吹き付ける第１エアージェットノズル８’と、上記フィードギア４及び５と同期回転する上下１対の部材で構成された第２フィードギア１３及び１４と、さらに走行している繭糸条に対し平行にエアーを出す繭糸条送出用第２エアージェットノズル１５とを設けてある。この装置を用いる嵩高生糸の製造法は、煮熟繭２から引き出した繭糸３をフードギア４及び５の間を挿通させて繭糸条の中の送り出し率を変えて送り出し、第１エアージェットノズル８’内を走行させ、走行している繭糸条に対し直角方向にエアーを吹き付けて、送り出しの多い弛んだ繭糸を親糸にあたかも巻き付けるようした糸条とし、その後、第２フィードギア１３及び１４の間を挿通させて送り出し、さらに走行している繭糸条に対し平行方向にエアーを吹き付ける第２エアージェットノズル１５内を走行させ、糸条を積極的に送り出すことにより、糸条の弛みを極力抑える用にして行われる。
【００２７】
さらに、本発明では、繭糸以外の繊維を混繊して嵩高生糸を製造するために、例えば、繰解槽の中心部に貫通して通糸管を設け、この通糸管を挿通させた繭糸以外の繊維を繭糸と抱合させながら繰糸し、繭糸条乾燥手段へ供給できるように構成することもできる。この場合、繭糸以外の繊維として、例えば、ナイロン、ポリエステル、アクリル、レーヨン等の合成繊維の細繊度繊維を用いることができる。この混繊維としては、一般に、繭糸と合成繊維との混率が、繭糸：５０〜７０％、合成繊維：５０〜３０％の割合のものを用いることができる。
混繊する場合、例えば、図８に示すように、ナイロン等の他繊維を巻いてあるコーン等１６を繰解槽１の下方に置き、そこから解離した他繊維の糸条１７を繰解槽１の中心部に貫通して設けた通糸管１８に挿通し、その後、繭糸と抱合させながら糸条乾燥用フード７内へ送り、その後、上記と同様に処理することにより所望の嵩高生糸を得ることができる。
【００２８】
【発明の効果】
上記したように、本発明によれば、谷形或いは傾斜形の繰出手段を用いて繭糸を強制的に送り出すことにより、１本の繭糸条の中で送出し率の異なる繭糸が混在した糸条を作り出すことができ、その後、多く送り出した部分はエアージェットノズルで繭糸を交絡させることにより、節状のものを作り出すことができる。節の大きさはフィードギアへ入る繭糸条の幅を制御することにより可能である。また、このエアージェットノズルによる効果は、弛んだ部分の繭糸を交絡させるばかりでなく、高温のエアーを用いることにより、繭糸に縮れを与え、嵩高な生糸とする効果も有している。
【図面の簡単な説明】
【図１】本発明の嵩高生糸製造法を実施するために用いる繰製装置の一つの構成を示す概要配置図。
【図２】フィードギアの形態とその組み合わせ状態を示す繭糸の挿通側から見たギアの正面図であり、（ａ）は下部ギアが谷形テーパを有する場合の形態とその組み合わせ状態を示し、（ｂ）は下部ギアが傾斜形である場合の形態とその組み合わせ状態を示す。
【図３】谷形テーパを有する下部フィードギアによる繭糸の送り出し状態を説明するためのギアの上面図であり、（ａ）は繭糸条の幅が広い場合、（ｂ）は繭糸条の幅が狭い場合を示す。
【図４】谷形テーパを有する下部フィードギアによる繭糸の送り出し原理を説明するための図であり、（ａ）は繭糸の挿通側から見たギアの正面図であり、（ｂ）は（ａ）の側面図である。
【図５】フィードギアへはいる繭糸の収束幅と得られた生糸の嵩高さとの関係を示すグラフ。
【図６】テーパを有する下部フィードギアによる繭糸の弛み発生状態を示すモデル図であり、（ａ）はフィードギアから送り出された直後の状態を、（ｂ）はエアージェット内で弛みの生じた状態を示す。
【図７】本発明の嵩高生糸製造法を実施するために用いる別の繰製装置の構成を示す概要配置図。
【図８】本発明の嵩高生糸製造法を実施するために用いるさらに別の繰製装置の構成を示す概要配置図。
【符号の説明】
１繰解槽２煮熟繭
３繭糸条４、５繰出手段
６熱風発生装置７繭糸条乾燥用フード
８、８’、１５エアージェットノズル
９加熱装置１０コンプレッサー
１１嵩高生糸糸条１２繰枠
１３、１４フィードローラーまたはフィードギア
１７糸条１８通糸管
Ｗ１、Ｗ２繭糸条幅の制御ガイド（案内ガイド）[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for producing bulky raw silk and a device for producing the same, and more particularly, to a method for reeling bulky raw silk when refining raw silk with cocoons drawn from a boiled cocoon and a device for refining the same.
[0002]
[Prior art]
Conventionally, as a method of imparting bulkiness to raw silk during reeling, a cocoon thread drawn from a boiled cocoon is shaken on a rotating forming frame, wrapped in a net shape, and pulled out from the forming frame. (For example, see Non-Patent Document 1).
Also, "bulky silk" is known, in which cocoon thread drawn from a boiled cocoon is converged, then pulled up at a slow speed, and then dropped into a container without tension (for example, see Non-Patent Document 2).
[0003]
[Non-patent document 1]
Chibayashi Takabayashi et al. (1996), Development of Net-row Silk Automatic Reeling Mechanism, Journal of Silk Silk Research Society (5), p. 26-31
[Non-patent document 2]
Hideo Urasawa (1985), Testing on bulky silk, Nagano Prefecture Cocoon Report, 60, 57
[0004]
[Problems to be solved by the invention]
Ordinary raw silk is prepared by combining cocoons drawn from a plurality of boiled cocoons in the fiber axis direction, binding and bonding with sericin, an adhesive protein present on the surface of the cocoons, and forming a single straight thread. I have. Therefore, it is suitable for thin materials such as kimonos and blouses that require smoothness, but is not necessarily suitable for bulky, air-containing and outer clothing requiring flexibility. Therefore, there is a need for a method for producing bulky raw silk with high efficiency, which is particularly suitable for outer clothing, shawls, neckwear, tapestries, and the like.
[0005]
However, the above-mentioned "net-like raw silk" has a drawback such as generation of fluff even if bulkiness is obtained, and "bulky silk" has a structural disadvantage that only the entire yarn is crimped. Since it is not bulky, if it is wetted once and then dried while being tensed again, there is a problem that the yarn returns to a form very close to ordinary raw silk.
An object of the present invention is to solve the above-mentioned problems of the conventional technique, and it is structurally bulky without returning to a thread having the same form as ordinary raw silk even when tensioned in a wet state. An object of the present invention is to provide a method for reeling raw silk and an apparatus for producing the same.
[0006]
[Means for Solving the Problems]
The first bulky raw silk production method of the present invention is a feed roller or a feed gear composed of a pair of upper and lower members, wherein a cocoon thread drawn from a boiled cocoon is split between members functioning as a feeding means. Inserted and sent out positively, then cocoons are entangled with each other in the air jet nozzle to give bulky raw silk, and this bulky raw yarn is blown out from the air jet nozzle, eliminating the internal stress of the yarn It is characterized in that a bulky raw yarn is obtained by winding it on a bobbin with a low tension while winding it on a bobbin without tension, or while twisting.
[0007]
Before inserting the cocoon thread drawn out from the boiled cocoon while separating it between the members of the feeding means, the cocoon thread is dried with hot air to advance the cocoon thread splitting state and change the degree of drying between the cocoon thread. , And then inserted. This makes it possible to change the subsequent entangled state of the cocoon thread.
In addition, when the cocoon thread is inserted while being split between the members of the feeding means, the split cocoon thread is inserted in a spread form, and the feed rates of the respective yarns among the drawn cocoon yarns are different. In this way. As a result, it is possible to change the state of arrangement of the cocoons in the yarn that has passed through the feeding means, and to obtain a bulged raw yarn.
[0008]
As at least the lower member of the feeding means, a tapered shape having a valley shape or an arc shape as viewed from the front side through which the cocoon thread is inserted, or an inclined shape having a tapered shape in one direction is used. The split cocoon thread is inserted in a spread form, and the cocoon thread to be drawn out is inserted so that the feed rate of each thread is different. As a result, the arrangement of the cocoons in the yarn that has passed through the feeding means can be changed, and a bulged raw yarn can be obtained.
When the cocoon thread is inserted while being split between the members of the feeding means, the convergence width of the split cocoon thread is controlled at a preset cycle. In this case, if the convergence width is narrowed, the entangled state can be a slightly straight yarn, and if the convergence width is widened, the entangled state can be a coarse yarn, or The portion resembling a knot can be changed according to the cycle or pattern of the convergence width of the cocoon thread.
[0009]
After the cocoon thread is inserted while being split between the members of the feeding means, high-temperature air is used when the cocoon thread is entangled with the fed cocoon thread by an air jet nozzle. Thereby, the drying of the cocoons can be advanced and the entangled state of the cocoons can be changed.
When pulling out cocoons from the boiled cocoons, synthetic fibers other than cocoons are inserted into the center of these cocoons, and the cocoons and the synthetic fibers are combined to be drawn, thereby obtaining a composite raw silk made of entangled bulk and low tension. I can do it.
[0010]
The second bulky raw silk production method of the present invention is characterized in that a cocoon thread drawn from a boiled cocoon is inserted and sent out while being separated between members of a first feeding means constituted by a pair of upper and lower members. Air is blown in a direction perpendicular to the cocoon thread running by the air jet nozzle to form a loosely wound cocoon thread which is often sent out as if it were wound around the parent thread, and then a pair of upper and lower pairs which rotate synchronously with the first feeding means. The second feeding means, which is composed of the above members, is inserted and sent out, and further, air is blown in parallel to the cocoon yarn running by the second air jet nozzle to send out the yarn, and the yarn is sent out. Characterized in that a bulky raw yarn is obtained by winding the yarn with no tension on a reeling frame in a state where the internal stress is eliminated, or by winding the yarn with low tension on a bobbin while performing twisting.
[0011]
Also in the case of the present invention, the drawn cocoon thread is dried with hot air before the cocoon thread is inserted while being split between the members of the first feeding means, so that the cocoon thread is split and the cocoon thread is dried. It is characterized by varying the degree and then inserting, so that the subsequent entanglement of the cocoon can be changed.
In addition, when the cocoon thread is inserted while being split between the members of the feeding means, the split cocoon thread is inserted in a spread form, and the feed rates of the respective yarns among the drawn cocoon yarns are different. In this way, the cocoon thread in the thread that has passed through the feeding means is changed in the state of alignment, and a bulged raw thread can be obtained.
[0012]
As at least a lower member of the first feeding means, a valley-shaped or arc-shaped tapered shape as viewed from the front side through which the cocoon thread is inserted, or an inclined shape tapered in one direction is used. It is characterized in that the separated cocoon thread is inserted in a spread form therethrough, and the cocoon thread to be drawn out is inserted at a different sending rate of each of the cocoon thread. By changing the arrangement of the cocoon yarns in the yarn that has passed through, a bulged raw yarn can be obtained.
[0013]
When the cocoon thread is inserted while being split between the members of the feeding means, the convergence width of the split cocoon thread is controlled at a preset cycle, and in this case, if the convergence width is narrowed, the entangled state is reduced. It can be a small straight yarn, and conversely, if the convergence width is widened, it can be a yarn with a rough entangled state, or a portion similar to a knot can be adjusted with the period of the cocoon thread convergence width or It can be changed in a pattern.
After inserting the cocoon thread drawn from the boiled cocoon while separating it between the members of the feeding means, and using the first air jet nozzle to entangle the cocoon thread with the sent cocoon thread, use high-temperature air. Features. Thereby, the drying of the cocoons can be advanced, and the entangled state of the cocoons can be changed. Further, when the cocoon thread is pulled out, a synthetic fiber other than the cocoon thread is inserted into the center of the cocoon thread, and the cocoon thread and the synthetic fiber are threaded while being compounded, so that a composite raw silk with a high entangled bulk and low tension can be obtained.
[0014]
Also, the first bulky raw silk production device of the present invention is a bunker, a cocoon thread drying means, an extracting means composed of a pair of upper and lower members for inserting the cocoon thread, and the cocoon thread entangled with each other. An air jet nozzle for producing bulky raw silk and a member for winding bulky raw silk blown out from the air jet nozzle are arranged in this order.
The feeding means in this device is characterized in that at least the lower member has the shape of a valley or an arc tapered as described above, or an inclined shape tapered in one direction. In addition, in order to mix fibers other than the cocoon thread, a threading tube is provided through the center of the defibrating tank, and the fibers other than the cocoon thread passed through the threading tube are wound while being conjugated with the cocoon thread, You may comprise so that it can supply to a cocoon thread drying means.
[0015]
The second bulky raw silk production apparatus of the present invention comprises a defibration tank, a cocoon thread drying means, a first unwinding means constituted by a pair of upper and lower members for inserting the dried cocoon thread, (1) a first air jet nozzle for blowing air in a direction perpendicular to a running cocoon thread fed from the feeding means, and a first feeding means for inserting the fed cocoon thread; A second feeding means constituted by a pair of upper and lower members which rotate synchronously, a second air jet nozzle for blowing and sending air in parallel to the running cocoon thread, and a second air jet nozzle And a member for winding the bulky raw yarn blown out of the order. Also in this device, at least the lower member of the first feeding means has a valley-shaped or arc-shaped tapered shape as viewed from the front side where the cocoon thread is inserted, or an inclined shape tapered in one direction. Preferably, it is shaped. Further, a yarn passing tube as described above can be provided.
[0016]
As described above, in the bulky raw silk production method of the present invention, in order to positively feed the separated cocoon thread drawn from the boiled cocoon, the cocoon thread is composed of a pair of members, and the lower member is tapered. By inserting the cocoon thread while being split between the members of the feeding means and controlling the convergence width of the separated cocoon thread at a preset cycle, when the convergence width is narrowed, the entangled state is less and a straight yarn is formed. When the convergence width is widened, the entangled state becomes a coarse yarn, and the entangled state of the yarn can be changed periodically. After that, the yarn is forcibly ejected from the air jet nozzle while being entangled with air, and the internal stress of the yarn is eliminated, and the yarn is wound on the frame without tension, or the yarn is wound on the bobbin with low tension while twisting. It is possible to produce a bulky entangled raw silk.
According to the present invention, when a cocoon thread is converged and conjugated to form a single thread, by changing the delivery rate of the cocoon thread constituting the thread, even when tensioned in a wet state, it is the same as ordinary raw silk A structurally bulky raw silk that does not return to a yarn having a different form can be produced.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of a bulky raw silk manufacturing method and a manufacturing apparatus according to the present invention will be described with reference to FIGS. 1 to 8, the same components are denoted by the same reference numerals.
FIG. 1 shows a schematic example of a bulky silk reeling apparatus which is used for carrying out a method of reeling bulky raw silk and which has a feed gear as a means for positively feeding cocoon thread (feeding means).
[0018]
In FIG. 1, a cocoon thread dissociated from a boiled cocoon 2 in a defibrating tank 1 is pulled up, and inserted between feed gears 4 and 5 composed of a pair of upper and lower members while being separated without converging. At this time, in order to appropriately dry the cocoon thread 3 pulled out from the boiled cocoon 2, the hot air generated from the hot air generator 6 is diffused in the well-known cocoon thread drying hood 7 so as to spread over the entire cocoon thread. Allow to dry. The hood 7 has a double structure. After the hot air generated from the hot air generator 6 is temporarily stored in the outside of the hood 7, the hot air comes out from the myriad of small holes toward the center of the hood 7 and is sprayed on the cocoon thread. It has a mechanism to dry the cocoon thread appropriately. At this time, by controlling the temperature of the hot air generator 6, the degree of drying of the cocoon thread can be arbitrarily changed.
[0019]
The cocoon thread 3 sandwiched between the feed gears 4 and 5 is sent to the air jet nozzle 8 with the rotation of the feed gear. Since the air is always forcibly discharged in the direction of arrow A, that is, in the traveling direction of the yarn, the cocoon yarn is almost completely wound around the feed gears 4 and 5 and is sent out positively. The cocoon thread that has passed between the feed gears 4 and 5 is entangled with the cocoon thread by the air, and is forcibly discharged together with the air as the raw thread 11. The raw silk discharged from the air jet nozzle 8 is blown out together with the air, and is wound on the bobbin with low tension while being wound on the reeling frame 12 without tension, or while being twisted by a flyer type twisting machine. Taken. The air supplied to the air jet nozzle 8 is obtained by heating the air supplied from the compressor 10 to the heating device 9 capable of controlling the temperature once by this heating device. Confound.
[0020]
FIGS. 2A and 2B are diagrams for explaining the meshing state of the feed gears 4 and 5 having different shapes, respectively, and are front views of the gears as viewed from the side where the cocoon thread is inserted. As the feed gears 4 and 5, for example, elastic members made of rubber, elastic plastic, or the like are used. The lower feed gear 4 shown in FIG. 2A has a gear portion processed into a valley shape so that the diameter of the front central portion of the gear becomes smaller, and FIG. 2B shows that the gear diameter gradually becomes smaller. This is an example of the inclined type having a truncated cone shape. Although the feed gear 5 shown in FIGS. 2A and 2B is cylindrical with the same diameter, the feed gear 5 may have the same shape as the feed gear 4 or a different shape. The cocoon thread is inserted into the portion where the feed gears 4 and 5 mesh with each other. In the state A in FIGS. 2A and 2B, the upper feed gear 5 is separated from the lower feed gear 4 and the cocoon thread travels. Is stopped, and the state of B in FIGS. 2A and 2B indicates a state in which both feed gears are engaged.
The feed gear 4 has a front cross-sectional shape which is not limited as long as the feed speed of the cocoon thread passing through the feed gear can be varied. It may be.
[0021]
FIGS. 3A and 3B show a state in which the width of the cocoon thread 3 is controlled when the cocoon thread 3 is inserted between the lower feed gear 4 and the upper feed gear 5. The case where it was used is shown. 3A shows a state where the width of the cocoon thread is widened, and FIG. 3B shows a state where the width of the cocoon thread is narrowed. In order to change the width of the cocoon thread, guide guides W1 and W2 for controlling the width are provided before the cocoon thread enters the feed gear. These guides are configured to operate left and right (in the directions of arrows A and B in the figure) by an electric signal from the outside, and to control the width thereof. For this reason, when the cocoon thread is fed by the feed gear, the cocoon thread 3 on the outer portion of the feed gear 4 shown in FIG. As a result, the cocoon thread having a high delivery rate and the cocoon thread having a low delivery rate are mixed to form a yarn. In FIG. 3B, since the width of the cocoon thread entering the feed gear 4 is narrower than in FIG. 3A, the thread having a small difference in the feeding rate is mixed. When the space between the guides W1 and W2 is further narrowed and the cocoon thread is made to converge to the valley portion of the feed gear 4, the thread that has passed through the feed gear has a form similar to a normal straight raw silk.
[0022]
4A and 4B are diagrams for explaining the principle of the feed rate. FIG. 4A is a front view of the gear of the feed gear 4 as viewed from the side where the cocoon thread is inserted, and FIG. It is a side view. As shown in FIG. 4, the cocoon thread 3 is sent out through a portion S1 (diameter L) having a long circumference of the valley-shaped feed gear 4 and a portion S2 (diameter R) having the shortest circumference of the valley portion. In this case, assuming that the rotation speed of the feed gear is Q (rpm), the feed length of the cocoon thread at the diameter L portion is LπQ / min. The feed length of the cocoon thread at the diameter R is RπQ / min. It is. Therefore, the S1 portion is more (L-R) πQ / min. Only more will be sent out.
[0023]
By controlling the width of the cocoon thread entering the feed gear as described above, the delivery rate of each cocoon thread in the cocoon thread can be changed. Therefore, for example, by increasing the width between the guides W1 and W2 in FIG. 3, in the cocoon thread to be sent out, many cocoon threads to be sent out have an increased slack portion, so that the bulkiness is increased. Many slacked portions of the sent cocoon thread are forcibly entangled by an air jet, and can be knotted. The air jet not only entangles the slackened cocoon thread, but also uses high-temperature air to shrink the cocoon thread to produce a bulky silk thread.
[0024]
Table 1 shows the relationship between the convergence width of the cocoon thread, which is the width between the guides as described above, and the bulkiness of the obtained raw silk, and the relationship is plotted in FIG. This raw silk was produced at a reeling speed of 40 m / min according to the method of the present invention, and the bulkiness is indicated by a volume per 1 g.
(Table 1)

As is clear from Table 1 and FIG. 5, a desired bulky silk can be produced by controlling the convergence width of the cocoon thread.
[0025]
FIGS. 6A and 6B schematically show the principle of obtaining the bulky raw silk. FIG. 6A shows the state of the cocoon thread 3 'immediately after being fed from the feed gear when the tapered inclined feed gear 4 is used, and the cocoon thread 3' as the diameter of the feed gear 4 gradually increases. Indicates a state where the feed length gradually increases. When the cocoon thread enters the air jet nozzle in this state, the entire cocoon thread is aligned with the shortest cocoon thread. Therefore, as shown in FIG. 6 (b), a portion where the cocoon thread is slackened is formed, resulting in a structural bulky silk thread.
[0026]
FIG. 7 shows a schematic example of a bulky silk reeling apparatus used for performing a bulky silk reeling method according to another embodiment of the present invention.
In this apparatus, the lower feed gear 4 of the first feed gears 4 and 5 composed of a pair of upper and lower members is of a tapered and inclined type, and travels downstream of this gear sequentially. A first air jet nozzle 8 'for blowing air in a direction perpendicular to the cocoon thread, a

second feed gear

13 and 14 composed of a pair of upper and lower members which rotate synchronously with the feed gears 4 and 5, and further travel; And a second air jet nozzle 15 for delivering cocoon filaments which emits air in parallel with the cocoon filaments. A method for producing bulky raw silk using this apparatus is as follows: a cocoon thread 3 drawn from a boiled cocoon 2 is inserted between

food gears

4 and 5 to be sent out while changing the feed rate in the cocoon thread, and a first air jet nozzle 8 ′ Air is blown in a direction perpendicular to the running cocoon thread to make a loose cocoon thread that is often sent out wound around the parent thread, and then between the second feed gears 13 and 14. Through the second air jet nozzle 15 that blows air in a direction parallel to the running cocoon yarn, and actively sends out the yarn to minimize the slack of the yarn. It is done.
[0027]
Furthermore, in the present invention, in order to produce a bulky raw yarn by mixing fibers other than the cocoon yarn, for example, a piercing tube is provided through a central portion of the defibrating tank, and the cocoon yarn is inserted through the piercing tube. Other fibers can be configured to be reeled while being conjugated with the cocoon thread and supplied to the cocoon thread drying means. In this case, as the fiber other than the cocoon thread, for example, fine fibers of synthetic fibers such as nylon, polyester, acrylic, and rayon can be used. As the mixed fiber, generally, a mixture ratio of a cocoon thread and a synthetic fiber of 50 to 70% for a cocoon thread and 50 to 30% for a synthetic fiber can be used.
In the case of fiber mixing, for example, as shown in FIG. 8, a cone or the like 16 wound with another fiber such as nylon is placed below the defibrating tank 1 and a yarn 17 of the other fiber dissociated therefrom is crushed. 1 is passed through a threading tube 18 provided to penetrate the center portion of the yarn 1 and then sent into the yarn drying hood 7 while being conjugated with a cocoon thread. Obtainable.
[0028]
【The invention's effect】
As described above, according to the present invention, a cocoon thread is forcibly sent out by using a valley-shaped or inclined-shaped feeding means, so that a cocoon thread having a different feeding rate is mixed in one cocoon thread. After that, the portion that has been sent out a lot can be knotted by interlacing cocoons with an air jet nozzle. The size of the knot can be controlled by controlling the width of the cocoon thread entering the feed gear. In addition, the effect of the air jet nozzle not only entangles the slackened cocoon thread, but also has the effect of using high-temperature air to shrink the cocoon thread and make the silk thread bulky.
[Brief description of the drawings]
FIG. 1 is a schematic layout diagram showing one configuration of a reeling apparatus used to carry out a bulky silk production method of the present invention.
FIG. 2 is a front view of a gear as viewed from a cocoon thread insertion side, showing a form of a feed gear and a combined state thereof, and FIG. 2 (a) shows a form and a combined state thereof when a lower gear has a valley taper; (B) shows a form in which the lower gear is inclined and a combination state thereof.
FIGS. 3A and 3B are top views of gears for explaining a state in which a cocoon thread is fed by a lower feed gear having a valley taper, where FIG. 3A shows a case where the width of the cocoon thread is wide, and FIG. Indicates a narrow case.
4A and 4B are diagrams for explaining the principle of feeding a cocoon by a lower feed gear having a valley taper, where FIG. 4A is a front view of the gear as viewed from the side where the cocoon is inserted, and FIG. FIG.
FIG. 5 is a graph showing the relationship between the convergence width of the cocoon thread entering the feed gear and the bulkiness of the raw silk obtained.
FIGS. 6A and 6B are model diagrams showing a state in which slack of a cocoon thread is generated by a lower feed gear having a taper, wherein FIG. 6A shows a state immediately after being fed from a feed gear, and FIG. 6B shows a state in which slack has occurred in an air jet. Indicates the status.
FIG. 7 is a schematic layout diagram showing the configuration of another reeling apparatus used to carry out the bulky silk production method of the present invention.
FIG. 8 is a schematic layout diagram showing the configuration of still another reeling apparatus used for carrying out the bulky silk production method of the present invention.
[Explanation of symbols]
DESCRIPTION OF REFERENCE NUMERALS 1 Refining tank 2 Cooked cocoon 3

Cocoon thread

4, 5 Feeding means 6 Hot air generator 7 Hood for drying

cocoon thread

8, 8 ', 15 Air jet nozzle 9 Heating device 10 Compressor 11 Bulk raw thread 12 Frame 13 14 Feed roller or feed gear 17 Thread 18 Threading tube W1, W2 Control guide (guide guide) of cocoon thread width

Claims

The cocoon thread drawn from the boiled cocoon is separated and inserted between the members of the feeding means composed of a pair of upper and lower members and sent out. Thereafter, the cocoon yarns are entangled with each other in the air jet nozzle to give bulkiness. The raw silk is blown out from an air jet nozzle and wound without tension on a reel while the internal stress of the yarn is eliminated, or the raw silk is wound on a bobbin with low tension while twisting. A method for producing bulky raw silk, characterized by obtaining

The cocoon thread according to claim 1, wherein the cocoon thread drawn out from the boiled cocoon is dried with hot air before the cocoon thread is passed between the members of the feeding means while being separated, and the cocoon thread splitting state is advanced. A method for producing bulky raw silk, comprising changing the degree of drying of the raw silk and then inserting the raw silk.

3. The cocoon thread according to claim 1 or 2, wherein when the cocoon thread drawn from the boiled cocoon is inserted while being split between the members of the feeding means, the split cocoon thread is inserted in a spread form and the cocoon thread is drawn out. A method of producing a bulky raw yarn, wherein the yarns are inserted so that the yarns are delivered at different rates.

In any one of claims 1 to 3, at least a lower member of the feeding means composed of a pair of upper and lower members is tapered to have a valley shape or an arc shape when viewed from the front side through which a cocoon thread is inserted. Use a slanted shape with a shape or taper in one direction, insert the spread cocoon thread into it in a spread form, and adjust the feed rate of each yarn among the drawn cocoon yarns. A method for producing bulky raw silk, characterized in that it is inserted differently.

In any one of claims 1 to 4, when the cocoon thread drawn from the boiled cocoon is inserted while being split between the members of the feeding means, the convergence width of the split cocoon thread is controlled at a preset cycle. Characteristic method for producing bulky raw silk.

In claim 5, when controlling the convergence width of the separated cocoon thread at a preset cycle, the convergence width is narrowed to reduce the entangled state to a less straight yarn, or conversely, the convergence width is widened. A method for producing a bulky raw yarn, wherein a yarn having a rough entangled state or a portion similar to a knot is changed by a cycle or a pattern of a convergence width of a cocoon yarn.

In any one of claims 1 to 6, after the cocoon thread drawn from the boiled cocoon is inserted while being separated between the members of the feeding means, when the cocoon thread is entangled with the sent cocoon thread by an air jet nozzle, A method for producing bulky raw silk, comprising using high-temperature air.

The entangled bulk according to any one of claims 1 to 7, wherein when the cocoons are pulled out from the boiled cocoons, synthetic fibers other than the cocoons are inserted into the center of the cocoons and the cocoons and the synthetic fibers are combined and reeled. A method for producing bulky raw silk, characterized by obtaining a composite raw silk made of high and low tension.

The cocoon thread drawn from the boiled cocoon is inserted and sent out while being split between the members of the first feeding means composed of a pair of upper and lower members, and is sent to the cocoon thread running with the first air jet nozzle. Air is blown in a right angle direction to form a thread in which a slack cocoon thread that is frequently sent out is wound around the parent thread, and then a second feeding means composed of a pair of upper and lower members that rotate synchronously with the first feeding means. Air is blown in parallel to the cocoon thread running by the second air jet nozzle to send out the thread, and the thread is sent to the frame while the internal stress of the thread is eliminated. A method for producing a bulky raw yarn, wherein a bulky raw yarn is obtained by winding the yarn with a low tension while winding it on a bobbin while twisting the yarn.

In claim 9, before the cocoon thread drawn from the boiled cocoon is inserted while being split between the members of the first feeding means, the drawn cocoon thread is dried by hot air to advance the cocoon thread splitting state, A method for producing bulky raw silk, comprising changing the degree of drying between cocoon threads and then inserting the silk thread.

11. The cocoon thread according to claim 9 or 10, wherein when the cocoon thread drawn from the boiled cocoon is inserted while being split between the members of the feeding means, the split cocoon thread is inserted in a spread form and the cocoon thread to be drawn out. Wherein the yarns are inserted so that the yarns are delivered at different rates.

In any one of claims 9 to 11, at least a lower member of the feeding means constituted by a pair of upper and lower members is tapered to have a valley shape or an arc shape when viewed from the front side through which a cocoon thread is inserted. Use a slanted shape with a shape or taper in one direction, insert the spread cocoon thread into it in a spread form, and adjust the feed rate of each yarn among the drawn cocoon yarns. A method for producing bulky raw silk, characterized in that it is inserted differently.

The convergence width of the separated cocoon thread is controlled at a preset cycle when the cocoon thread drawn from the boiled cocoon is inserted between the members of the feeding means while being separated. Either narrow the width and use a straight yarn with a small entangled state, or conversely widen the convergence width and use a coarse yarn with a entangled state, or use the convergence width of the cocoon yarn to resemble a knot. A method for producing a bulky raw silk, characterized in that the bulky silk is changed according to the cycle and pattern of the raw silk.

In any one of claims 9 to 13, after the cocoon thread drawn from the boiled cocoon is inserted while being separated between the members of the feeding means, the cocoon thread is entangled with the sent cocoon thread by the first air jet nozzle. A method for producing bulky raw silk, wherein high-temperature air is used.

The entangled bulk according to any one of claims 9 to 14, wherein when drawing cocoons from the boiled cocoons, synthetic fibers other than cocoons are inserted into the center of the cocoons, and the cocoons and synthetic fibers are wound while being compounded. A method for producing bulky raw silk, characterized by obtaining a composite raw silk made of high and low tension.

A defibrating tank, a cocoon thread drying means, an unwinding means composed of a pair of upper and lower members for inserting the cocoon thread, and an air jet nozzle for tangling the cocoon thread with each other to obtain a bulky raw silk And a member for winding a bulky raw yarn blown out from an air jet nozzle are arranged in this order.

In claim 16, at least the lower member of the feeding means has a shape that is tapered in a valley shape or an arc shape as viewed from the front side where the cocoon thread is inserted, or an inclined shape that is tapered in one direction. Bulky silk production equipment characterized in that:

18. The fiber according to claim 16 or 17, wherein a yarn passing tube is provided through the center of the defibrating tank to mix fibers other than the cocoon yarn, and fibers other than the cocoon thread passed through the yarn passing tube are conjugated with the cocoon yarn. A bulky silk production apparatus characterized in that the bulky silk production apparatus is configured so as to be capable of reeling while being supplied and supplying it to a cocoon thread drying means.

A defibrating tank, a cocoon thread drying means, a first feeding means constituted by a pair of upper and lower members for inserting the dried cocoon thread, and a running cocoon thread fed from the first feeding means. It is composed of a first air jet nozzle for blowing and sending air in a direction perpendicular to the filament, and a pair of upper and lower members for rotating the fed cocoon thread and rotating synchronously with the first feeding means. A second feeding means, a second air jet nozzle for blowing and feeding air in parallel to the running cocoon thread, and a second air jet nozzle for winding bulky raw silk blown out from the second air jet nozzle. A bulky silk production apparatus, wherein members are arranged in this order.

20. The device according to claim 19, wherein at least a lower member of the first feeding means is tapered in a valley shape or an arc shape as viewed from the front side through which the cocoon thread is inserted, or is an inclined shape tapered in one direction. Bulky silk producing apparatus characterized by having a shape of

21. The fiber according to claim 19 or 20, wherein a yarn passing tube is provided through a center portion of the defibrating tank so as to mix fibers other than the cocoon yarn, and the fiber other than the cocoon yarn passed through the yarn passing tube is conjugated with the cocoon yarn. A bulky silk production apparatus characterized in that the bulky silk production apparatus is configured so as to be capable of reeling while being supplied and supplying it to a cocoon thread drying means.