JP2000178836A - Flame resisting heat-treating apparatus for yarn - Google Patents
Flame resisting heat-treating apparatus for yarnInfo
- Publication number
- JP2000178836A JP2000178836A JP10357138A JP35713898A JP2000178836A JP 2000178836 A JP2000178836 A JP 2000178836A JP 10357138 A JP10357138 A JP 10357138A JP 35713898 A JP35713898 A JP 35713898A JP 2000178836 A JP2000178836 A JP 2000178836A
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- hot air
- heat treatment
- heat
- chamber
- wind speed
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- Inorganic Fibers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は連続して走行する糸
条に酸化性雰囲気中で耐炎化熱処理を施すための糸条の
耐炎化熱処理装置に関し、特に、耐炎化処理室内の温度
分布が均一であり、糸条に均一の耐炎化処理を施すこと
のできる糸条の耐炎化熱処理装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for heat-treating a continuously running yarn in a oxidizing atmosphere in an oxidizing atmosphere. The present invention relates to a yarn oxidizing heat treatment apparatus capable of performing uniform oxidizing treatment on yarn.
【０００２】[0002]
【従来の技術】一般に、炭素繊維を製造する工程ではポ
リアクリロニトリル、レーヨン、ピッチ類などの有機繊
維は、先ず、酸化性雰囲気中で熱処理を行い耐炎化処理
が施され、次いで、不活性雰囲気中で熱処理を行う炭素
化処理が施される。この炭素繊維の製造工程において、
耐炎化工程の占める時間並びにエネルギー消費量は極め
て大きいため、炭素繊維の生産性を向上させるために
は、かかる耐炎化工程における生産性の向上が必要不可
欠となる。2. Description of the Related Art Generally, in the process of producing carbon fibers, organic fibers such as polyacrylonitrile, rayon, and pitches are first subjected to a heat treatment in an oxidizing atmosphere to be subjected to a flame-proof treatment, and then to an inert atmosphere. A carbonization treatment for performing a heat treatment is performed. In this carbon fiber manufacturing process,
Since the time and energy consumption occupied by the oxidization process are extremely large, it is essential to improve the productivity in the oxidization process in order to improve the productivity of carbon fibers.
【０００３】この耐炎化処理を施すための従来の耐炎化
処理装置の概略縦断面図を図３に、また同装置の概略横
断面図を図４に示す。同装置１′は、多数本の糸条７が
水平方向にシート状に並んで走行する熱処理室２を有し
ており、同熱処理室２は上壁２ａから熱風を導入すると
共に下壁２ｂから熱風を強制的に導出している。更に、
前記処理室２の熱風導入部である上壁２ａと、熱風導出
部である下壁２ｂと、更に一方の側壁２ｃとの三方が、
前記糸条の走行方向に配された複数の熱風循環室４によ
り囲まれている。前記熱風循環室４の内部にはそれぞ
れ、ヒータ５と熱風循環ファン６とが備えられており、
更に熱風の一部を排気するための排気口４ａが形成され
ている。更に、前記熱処理装置１′は熱風の熱効率を高
めるために炉全体の外周が断熱材により覆われている。FIG. 3 is a schematic longitudinal sectional view of a conventional flameproofing apparatus for performing this flameproofing processing, and FIG. 4 is a schematic cross sectional view of the apparatus. The apparatus 1 'has a heat treatment chamber 2 in which a large number of yarns 7 run horizontally in a sheet-like manner. The heat treatment chamber 2 introduces hot air from an upper wall 2a and a heat treatment chamber 2 from a lower wall 2b. Hot air is forcibly derived. Furthermore,
The upper wall 2a, which is a hot air introduction part, the lower wall 2b, which is a hot air derivation part, and one side wall 2c of the processing chamber 2 have three sides,
It is surrounded by a plurality of hot air circulation chambers 4 arranged in the running direction of the yarn. A heater 5 and a hot air circulation fan 6 are provided inside the hot air circulation chamber 4, respectively.
Further, an exhaust port 4a for exhausting a part of the hot air is formed. Further, in the heat treatment apparatus 1 ', the outer periphery of the entire furnace is covered with a heat insulating material in order to increase the thermal efficiency of hot air.
【０００４】ところで、耐炎化工程を経て得られた耐炎
化繊維の諸物性及びその均一性は、後に続く炭素化工程
での工程通過性や、最終的に得られた炭素繊維の物性及
び生産性にも大きな影響を与える。Meanwhile, various properties and uniformity of the oxidized fiber obtained through the oxidization step are determined by the following properties of the oxidized fiber such as passability in the subsequent carbonization step, and physical properties and productivity of the finally obtained carbon fiber. Also has a big impact.
【０００５】そのため、これまでにも耐炎化工程の生産
性向上と、耐炎化処理の均一化とに着目した提案が多数
なされている。例えば、特開昭５９−１３７５１０号公
報に開示された耐炎化熱処理炉は、多数の糸条を帯状に
並べ、ロールにかけ回して熱処理室内を多段に走行させ
ると共に、同熱処理室内に熱風を糸条の走行方向と平行
に導入している。更に、前記熱処理室内を走行する糸条
の各段の間に気体流路案内板を配し、熱風を前記糸条の
走行方向に対してジグザグに流している。For this reason, many proposals have been made so far, focusing on improving the productivity of the flameproofing step and making the flameproofing treatment uniform. For example, the flameproofing heat treatment furnace disclosed in JP-A-59-137510 has a structure in which a number of yarns are arranged in a belt shape, wrapped around rolls and run in a multi-stage heat treatment room, and hot air is introduced into the heat treatment room. Is introduced parallel to the running direction. Further, a gas flow path guide plate is arranged between each stage of the yarn traveling in the heat treatment chamber, and hot air flows in a zigzag manner in the traveling direction of the yarn.
【０００６】また、上記公報に開示された耐炎化熱処理
炉の他にも、耐炎化処理工程での生産性を向上させる方
法としては、例えば糸条を加熱プレート等に接触させる
伝導加熱と熱風加熱とを併用する方法、雰囲気ガスの諸
条件を調整する方法、処理繊維束の投入量を増大させる
高容積密度焼成による方法等が提案されている。In addition to the oxidizing heat treatment furnace disclosed in the above-mentioned publication, methods for improving productivity in the oxidizing treatment step include, for example, conduction heating in which the yarn is brought into contact with a heating plate or the like and hot air heating. , A method of adjusting various conditions of the atmosphere gas, a method of high volume density firing for increasing the input amount of the treated fiber bundle, and the like.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、上記公
報の耐炎化熱処理炉や上述の方法によっても、耐炎化処
理の均一化と高速化とがある程度は達成されるものの、
更なる向上が望まれている。更に、上記公報の熱処理炉
は、狭い処理室内に更に気体流路案内板が配されている
ため糸条のハンドリング性を損ない、例えば糸切れなど
の不測の事態が発生した場合に、前記気体流路案内板が
邪魔になって修復作業が煩雑になるといった新たな問題
が生じる。However, even with the oxidizing heat treatment furnace and the above-mentioned method of the above publication, the oxidizing treatment can be made uniform and high-speed to some extent.
Further improvement is desired. Further, the heat treatment furnace disclosed in the above publication further impairs the handling of the yarn because a gas flow guide plate is further disposed in the narrow processing chamber. A new problem arises in that the road guide plate is in the way and the repair work is complicated.
【０００８】本発明は、かかる従来の問題を解決すべく
なされたものであり、熱処理室内の糸条のハンドリング
性を損なうことなく、耐炎化熱処理の均一化と高速化と
を更に向上させ、後工程の通過性並びに生産性の向上が
実現される耐炎化熱処理装置を提供することを目的とし
ている。The present invention has been made to solve such a conventional problem, and further improves the uniformity and the speed of the oxidization heat treatment without impairing the handleability of the yarn in the heat treatment chamber. It is an object of the present invention to provide an oxidizing heat treatment apparatus capable of improving processability and productivity.
【０００９】[0009]
【課題を解決するための手段及び作用効果】かかる目的
を達成するために、本発明者らが耐炎化処理の均一性を
より高次で確保すべく鋭意検討した結果、耐炎化工程で
は主として熱風循環型の熱処理炉が用いられるため、耐
炎化繊維の諸物性等の均一性は装置的な要因、即ち同熱
処理炉における熱処理室内の温度分布や風速分布に依存
するところが大きいことがわかった。また、これらの分
布が不均一である場合には、温度制御や風速制御、糸条
走行速度の制御など、運転管理において様々な制約が加
わり、更には工程のダウンにつながる場合もあることが
わかった。Means for Solving the Problems and Effects of the Invention In order to achieve the above object, the present inventors have conducted intensive studies to ensure a higher degree of uniformity of the oxidization treatment. Since a circulation type heat treatment furnace was used, it was found that the uniformity of the physical properties of the oxidized fiber greatly depended on a factor of an apparatus, that is, a temperature distribution and a wind speed distribution in a heat treatment chamber in the heat treatment furnace. In addition, when these distributions are non-uniform, various restrictions are added in operation management such as temperature control, wind speed control, and yarn running speed control, and it is also found that the process may be down. Was.
【００１０】かかる検討から以下の本発明に至ったもの
である。即ち、本発明は、多数の糸条がシート状に並ん
で走行すると共に、熱風導入部と熱風導出部とを有する
熱処理室と、前記熱風導入部及び前記熱風導出部を導通
させると共に、それぞれにヒータ及びファンを有し、前
記熱処理室に沿って糸条の走行方向に配された複数の熱
風循環室と、を備えてなる糸条の耐炎化熱処理装置にお
いて、前記熱風循環室は、保温域と、前記熱風導入部及
び前記熱風導出部の間にヒータ及びファンを有する循環
域とを備え、同熱風循環室により前記熱処理室の四方が
囲まれてなることを特徴とする耐炎化熱処理装置を主要
な構成としている。[0010] The above study led to the present invention described below. That is, in the present invention, while a number of yarns run side by side in a sheet shape, a heat treatment chamber having a hot air introduction part and a hot air derivation part, and the hot air introduction part and the hot air derivation part are electrically connected to each other. And a plurality of hot air circulation chambers having a heater and a fan, and arranged in a running direction of the yarn along the heat treatment chamber, wherein the hot air circulation chamber has a heat insulating region. And a circulation area having a heater and a fan between the hot air introduction section and the hot air derivation section, wherein the hot air circulation chamber surrounds four sides of the heat treatment chamber. It has a main configuration.
【００１１】図３及び図４に示すような従来の耐炎化熱
処理装置１′は、上述したように、熱処理室２の熱風導
入部である上壁２ａと、熱風導出部である下壁２ｂとを
導通する熱風循環室４が、前記熱処理室２の３方の壁面
を囲んで糸条走行方向に複数配列されている。各熱風循
環室４にはそれぞれヒータ５及び熱風循環ファン６が配
されており、即ち、１基の前記熱処理装置１′は、複数
個のヒータ５及び熱風循環ファン６を備えている。これ
ら複数のヒータ５及び熱風循環ファン６は、操作性及び
メンテナンスの作業性を考慮して、前記熱処理室２に対
して全て同一の側壁側に一列に配されている。As shown in FIG. 3 and FIG. 4, the conventional oxidizing heat treatment apparatus 1 'has an upper wall 2a serving as a hot air introduction section of the heat treatment chamber 2 and a lower wall 2b serving as a hot air outlet section. A plurality of hot air circulating chambers 4 are arranged in the yarn traveling direction so as to surround three wall surfaces of the heat treatment chamber 2. Each hot air circulation chamber 4 is provided with a heater 5 and a hot air circulation fan 6, that is, one heat treatment apparatus 1 'includes a plurality of heaters 5 and a hot air circulation fan 6. The plurality of heaters 5 and the hot-air circulating fans 6 are all arranged in a line on the same side wall with respect to the heat treatment chamber 2 in consideration of operability and operability of maintenance.
【００１２】この従来の耐炎化熱処理装置１′では、循
環される熱風の温度はヒータ５からの吹き出し側で最も
高温となっているが、熱処理室２の内部においては、風
速分布にも依るが、ヒータ５及び熱風循環ファン６が配
されている側（図３では左側）の内壁面付近で高温とな
り、その反対側の内壁面付近で低温となる傾向を示す。
熱処理室２内でのこのような温度分布の要因は、ヒータ
及び熱風循環ファンの側の壁面とは反対の側の壁面から
の放熱によるものであり、このように熱処理装置１′の
壁面からの放熱が、装置１′の製造ラインでのＲ側とＬ
側とでアンバランスとなるため、熱処理室２内での温度
分布が不均一となってしまう。In this conventional flameproofing heat treatment apparatus 1 ′, the temperature of the circulated hot air is highest on the blow-out side from the heater 5, but in the heat treatment chamber 2, it depends on the wind speed distribution. The temperature tends to be high near the inner wall surface on the side where the heater 5 and the hot air circulation fan 6 are arranged (the left side in FIG. 3), and to be low near the inner wall surface on the opposite side.
The factor of such temperature distribution in the heat treatment chamber 2 is due to heat radiation from the wall surface on the side opposite to the wall surface on the side of the heater and the hot-air circulating fan. The heat radiation is between the R side and the L in the production line of the device 1 '.
As a result, the temperature distribution in the heat treatment chamber 2 becomes non-uniform.
【００１３】これに対して本発明の耐炎化熱処理装置で
は、前記熱風循環室が保温域と、前記熱風導入部及び熱
風導出部の間にヒータ及び熱風循環ファンを配した循環
域とを備えており、前記熱処理室の四方が同熱風循環室
により囲まれている。即ち、前記熱風導入部及び熱風導
出部が前記熱処理室２′の上下壁部にそれぞれ形成され
ている場合には、前記熱風循環室は、循環域が上下壁部
と一方の側壁の側に配され、保温域が上下壁部と他方の
側壁の側に配されることとなり、前記熱処理室の四方が
前記熱風循環室により囲まれることとなる。そのため、
従来のように熱処理室が熱風循環室により三方のみしか
囲まれておらず、一方の壁部が外気と接触している耐炎
化熱処理のように、一の壁部から多量に放熱されるとい
うことがなく、従来の熱処理装置に比べて熱処理室内の
温度分布を均一にすることができる。On the other hand, in the flameproofing heat treatment apparatus of the present invention, the hot-air circulation chamber includes a heat-retaining area, and a circulation area in which a heater and a hot-air circulation fan are arranged between the hot-air introduction section and the hot-air outlet section. The heat treatment chamber is surrounded on all sides by the hot air circulation chamber. That is, when the hot-air introduction section and the hot-air outlet section are formed on the upper and lower walls of the heat treatment chamber 2 ', respectively, the hot-air circulation chamber has a circulation area arranged on the upper and lower walls and one side wall. Then, the heat retaining areas are arranged on the upper and lower wall portions and the other side wall side, and four sides of the heat treatment chamber are surrounded by the hot air circulation chamber. for that reason,
As in the past, the heat treatment chamber is surrounded only on three sides by the hot air circulation chamber, and a large amount of heat is radiated from one wall as in the case of oxidation heat treatment where one wall is in contact with the outside air Therefore, the temperature distribution in the heat treatment chamber can be made uniform as compared with the conventional heat treatment apparatus.
【００１４】更に、複数の前記熱風循環室は、隣り合う
前記熱風循環室の前記循環域と前記保温域とが糸条の走
行方向に交互に配列されていることが好ましい。複数の
前記熱風循環室を、隣り合う前記熱風循環室で前記循環
域と前記保温域とが糸条の走行方向に交互になるように
配列している場合には、前記熱処理室の両側壁は、それ
ぞれの側に同一のヒータ及び熱風循環ファンが配されて
いるため、いずれの側壁の側からも均一に加熱及び放熱
がなされることとなり、前記熱処理室内における温度分
布が均一となる。Further, in the plurality of hot air circulation chambers, it is preferable that the circulation areas and the heat insulation areas of the adjacent hot air circulation chambers are alternately arranged in the running direction of the yarn. When the plurality of hot air circulation chambers are arranged so that the circulation area and the heat retaining area are alternately arranged in the running direction of the yarn in the adjacent hot air circulation chambers, both side walls of the heat treatment chamber are Since the same heater and hot air circulating fan are provided on each side, the heating and heat radiation are performed uniformly from both side walls, and the temperature distribution in the heat treatment chamber becomes uniform.
【００１５】また、前記熱処理室と、前記熱風循環室の
前記循環域及び前記保温域とにおける風速が、 （３／２）×ｖ0 ≦ｖ1 ≦１０×ｖ0 ・・・（１） （１／２）×ｖ0 ≦ｖ2 ≦１０×ｖ0 ・・・（２） ｖ0 ：前記処理室における風速 (m/sec) ｖ1 ：前記循環域における風速 (m/sec) ｖ2 ：前記保温域における風速 (m/sec) を満足していることが好ましい。Further, the wind speed in the heat treatment chamber and in the circulation area and the heat insulation area of the hot air circulation chamber is (3/2) × v 0 ≦ v 1 ≦ 10 × v 0 (1) (1) (1/2) × v 0 ≦ v 2 ≦ 10 × v 0 (2) v 0 : wind speed in the processing chamber (m / sec) v 1 : wind speed in the circulation region (m / sec) v 2 : It is preferable that the wind speed (m / sec) in the heat retaining region is satisfied.
【００１６】前記熱風循環室における前記保温域での風
速は、前記循環域における風速と同等であることが好ま
しく、特に、上記式（１）及び式（２）を満たすの風速
条件である場合に、熱処理室内における風速分布を均一
化するために優れた効果を発揮する。It is preferable that the wind speed in the heat insulation region in the hot air circulation chamber is equal to the wind speed in the circulation region. In particular, when the wind speed conditions satisfy the above equations (1) and (2). In addition, it exerts an excellent effect to make the wind speed distribution in the heat treatment chamber uniform.
【００１７】前記循環域における風速ｖ1 がｖ1 ＜（３
／２）) ×ｖ0 である場合、同循環域の体積が大きくな
り、耐炎化熱処理装置の設置スペースや設備費用の増大
につながり好ましくない。前記保温域における風速ｖ2
がｖ2 ＜（１／２）×ｖ0 の場合も同様に、耐炎化熱処
理装置の設置スペースや設備費用の増大につながり好ま
しくない。When the wind speed v 1 in the circulation region is v 1 <(3
/ 2)) × v 0 , the volume of the circulation area becomes large, which leads to an increase in installation space and equipment cost of the oxidizing heat treatment apparatus, which is not preferable. Wind speed v 2 in the heat insulation area
Similarly, when v 2 <(×) × v 0 , the installation space and equipment cost of the oxidizing heat treatment apparatus are undesirably increased.
【００１８】一方、前記循環域における風速ｖ1 が１０
×ｖ0 ＜ｖ1 の場合には、耐炎化熱処理装置の設置スペ
ースや設備費用は小さくなるものの、同循環域における
風速斑が大きくなり、例えば多段の攪拌板や整流板など
が必要となるため、耐炎化熱処理装置の操作性が煩雑と
なる。また、前記保温域における風速ｖ2 が１０×ｖ0
＜ｖ2 の場合には、エネルギー消費の増大につながるた
め好ましくない。On the other hand, when the wind speed v 1 in the circulation region is 10
In the case of × v 0 <v 1 , although the installation space and the equipment cost of the oxidizing heat treatment apparatus are reduced, the wind speed unevenness in the circulation area is increased, and for example, a multi-stage stirring plate or a rectifying plate is required. In addition, the operability of the oxidizing heat treatment apparatus becomes complicated. Further, the wind speed v 2 in the heat insulation region is 10 × v 0
<V 2 is not preferable because it leads to an increase in energy consumption.
【００１９】なお、耐炎化熱処理装置における熱処理室
内での温度分布及び風速分布を均一化するために最も好
ましい装置は、熱風循環室により熱処理室の四方が囲ま
れており、前記隣り合う前記熱風循環室は前記循環域と
前記保温域とを交互に配列されると共に、上記式（１）
及び式（２）を満たす風速としたものである。かかる耐
炎化熱処理装置では、熱処理室内の温度分布及び風速分
布の均一性がより高次で実現されることにより被処理糸
条の物性の均一性が実現される。The most preferable apparatus for uniformizing the temperature distribution and the air velocity distribution in the heat treatment chamber in the heat treatment apparatus for oxidizing heat is the one in which the heat treatment chamber is surrounded by a hot air circulation chamber, The chambers are arranged alternately with the circulation area and the heat insulation area, and have the above formula (1).
And the wind speed satisfying Expression (2). In such a flameproofing heat treatment apparatus, the uniformity of the temperature distribution and the wind speed distribution in the heat treatment chamber is realized at a higher order, so that the uniformity of the physical properties of the yarn to be processed is realized.
【００２０】なお、本発明にあっては、見かけ上の作業
性、メンテナンス性は損なわれるものの、被処理糸条の
物性が均一化されるため、作業頻度が減少するととも
に、耐炎化処理温度の設定基準であるスモーク発生限度
付近で温度設定が可能となるため、より高温での耐炎化
熱処理が可能となり、高速処理により生産性も著しく向
上するといった効果も期待できる。In the present invention, although the apparent workability and maintainability are impaired, the physical properties of the yarn to be treated are made uniform, so that the frequency of operation is reduced and the temperature of the oxidization treatment is reduced. Since the temperature can be set in the vicinity of the smoke generation limit, which is the setting criterion, it is possible to perform the heat-resistant heat treatment at a higher temperature, and the effect of significantly improving the productivity by the high-speed processing can be expected.
【００２１】なお、前記熱風循環室における保温域での
保温手段としては、強制的に熱風を流して保温してもよ
く、また、循環熱風を利用して保温することもできる。
同保温室の風向きについても特に制限はない。なお、前
記保温域に排気口を設けて、炉内発生ガスの排気をも同
時に行うことが好ましい。また、熱処理室内の風向きに
ついても、その方向に何らの制限はない。更に、前記熱
風循環室、及び前記熱処理室の大きさには特に制限はな
いが、前記耐炎化熱処理装置の設置スペース及び設備費
用を考慮して適宜設定される。As the heat retaining means in the heat retaining area in the hot air circulating chamber, hot air may be forcibly flown to keep the temperature or circulating hot air may be used to keep the temperature.
There is no particular limitation on the wind direction of the heat insulation room. In addition, it is preferable that an exhaust port is provided in the heat retaining area to simultaneously exhaust gas generated in the furnace. Also, there is no restriction on the direction of the wind in the heat treatment chamber. Further, the size of the hot-air circulation chamber and the heat treatment chamber is not particularly limited, but is appropriately set in consideration of the installation space and equipment cost of the oxidation-resistant heat treatment apparatus.
【００２２】[0022]
【発明の実施の形態】以下、本発明の実施の形態につい
て、図面を参照して具体的に説明する。図１は本発明の
好適な実施形態である耐炎化熱処理装置の概略縦断面図
であり、図２は前記装置の概略横断面図である。Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a schematic longitudinal sectional view of an oxidizing heat treatment apparatus according to a preferred embodiment of the present invention, and FIG. 2 is a schematic transverse sectional view of the apparatus.
【００２３】前記耐炎化熱処理装置１は、多数本の糸条
７が水平方向にシート状に並んで走行する熱処理室２を
有しており、同熱処理室２は上壁２ａから熱風を導入す
ると共に下壁２ｂから熱風を強制的に導出している。更
に、前記処理室２の糸条走行方向に沿って、同処理室２
の四方を囲む熱風循環室３が、複数配列されており、前
記熱処理装置１は熱風の熱効率を高めるために装置全体
の外周が断熱材により覆われている。The oxidizing heat treatment apparatus 1 has a heat treatment chamber 2 in which a number of yarns 7 run horizontally in a sheet shape, and the heat treatment chamber 2 introduces hot air from an upper wall 2a. At the same time, hot air is forcibly led out from the lower wall 2b. Furthermore, along the yarn traveling direction of the processing chamber 2, the processing chamber 2
A plurality of hot air circulation chambers 3 surrounding the four sides are arranged, and the heat treatment apparatus 1 is covered with a heat insulating material on the outer periphery of the entire apparatus in order to increase the heat efficiency of hot air.
【００２４】前記熱風循環室３は、前記熱処理室２の熱
風導入部である前記上壁２ａと、熱風導出部である前記
下壁２ｂとを導通させると共に、それらの間にヒータ５
及び熱風循環ファン６を有する循環域３ａと、更に、同
循環域３ａとは反対の側に保温域３ｂとが形成されてい
る。前記保温域３ｂには前記熱処理室２の下壁２ｂから
導出された熱風が充満しており、前記熱処理室２を保温
している。なお、同保温域３ｂに更にヒータを設置して
積極的に加熱保温することも可能である。更に、本実施
形態では前記保温域３ｂに排気口３ｃが形成されてお
り、同保温域３ｂでは熱処理装置１の排気をも行ってい
る。The hot air circulation chamber 3 conducts the upper wall 2a, which is a hot air introduction part, of the heat treatment chamber 2 to the lower wall 2b, which is a hot air outlet, and a heater 5 between them.
A circulation area 3a having a hot air circulation fan 6 and a heat insulation area 3b on the side opposite to the circulation area 3a. The heat retaining area 3b is filled with hot air derived from the lower wall 2b of the heat treatment chamber 2 to keep the heat treatment chamber 2 warm. In addition, it is also possible to positively heat and maintain the temperature by further installing a heater in the heat retaining region 3b. Further, in the present embodiment, an exhaust port 3c is formed in the heat retaining area 3b, and the heat treatment apparatus 1 is also evacuated in the heat retaining area 3b.
【００２５】前記熱風循環室３は、上述したように、前
記処理室２の糸条走行方向に沿って複数配列されてい
る。このとき、隣り合う前記循環室３は、図２に示すよ
うに、前記循環域３ａと排気域３ｂとが糸条の走行方向
に交互になるように配列されている。As described above, a plurality of the hot air circulation chambers 3 are arranged along the yarn traveling direction of the processing chamber 2. At this time, the adjacent circulation chambers 3 are arranged such that the circulation areas 3a and the exhaust areas 3b are alternately arranged in the running direction of the yarn as shown in FIG.
【００２６】このように、前記処理室２は前記循環域３
ａと前記保温域３ｂとにより四方が囲まれており、外気
に接触している壁面がなく、一部の壁部から多量に放熱
されるということがない。しかも、複数の前記熱風循環
室３を、隣り合う前記熱風循環室３で前記循環域３ａと
前記保温域３ｂとが交互になるように配列している。As described above, the processing chamber 2 is provided with the circulation zone 3
a and the heat insulation area 3b are surrounded on all sides, there is no wall in contact with the outside air, and a large amount of heat is not radiated from some of the walls. In addition, the plurality of hot air circulation chambers 3 are arranged so that the circulation areas 3a and the heat insulation areas 3b are alternately arranged in the adjacent hot air circulation chambers 3.
【００２７】そのため、前記熱処理室２の両側壁には、
それぞれの側に同一のヒータ及び熱風循環ファンが配さ
れることとなり、いずれの側壁の側からも同様に加熱及
び放熱がなされ、特に両側壁において放熱バランスが同
一となるため、前記熱処理室２内における温度分布が均
一となる。従って、シート状に引き揃えられて走行する
処理糸条７は、シートの幅方向で均一に熱処理されるこ
ととなり、各処理糸条に処理斑が生じることがない。Therefore, both side walls of the heat treatment chamber 2
The same heater and hot air circulating fan are arranged on each side, and heating and heat are radiated from both side walls in the same manner. In particular, since the heat radiation balance is the same on both side walls, the heat treatment chamber 2 Temperature distribution becomes uniform. Therefore, the treated yarns 7 that are aligned and run in a sheet shape are heat-treated uniformly in the width direction of the sheet, and there is no processing unevenness in each treated yarn.
【００２８】更に、上記装置１において、前記熱処理室
２の風速ｖ0 と、前記熱風循環室３における前記循環域
３ａの風速ｖ1 及び前記保温域３ｂの風速ｖ2 が、 （３／２）×ｖ0 ≦ｖ1 ≦１０×ｖ0 ・・・（１） （１／２）×ｖ0 ≦ｖ2 ≦１０×ｖ0 ・・・（２） を満たすように制御されている。このような風速に制御
することにより、熱処理室２内における風速分布、温度
分布のより高次での均一性を確保でき、複数の処理糸条
７には、熱風がシートの幅方向で一定の風速で作用し、
熱処理室２内において、風速及び温度の均一化が達成さ
れる。このように、各糸条７の熱履歴が均一化すること
によって耐炎化処理後の被処理糸条の物性が均一化され
る。しかも、風速分布及び温度分布の均一性をより高次
で確保できるため、スモーク発生限度の温度付近まで処
理温度を高めることが可能となり、高温高速焼成による
生産性向上が達成できる。Further, in the above apparatus 1, the wind speed v 0 of the heat treatment chamber 2, the wind speed v 1 of the circulation zone 3a and the wind speed v 2 of the heat insulation zone 3b in the hot air circulation chamber 3 are represented by (3/2) × v 0 ≦ v 1 ≦ 10 × v 0 (1) (1/2) × v 0 ≦ v 2 ≦ 10 × v 0 (2) By controlling to such a wind speed, higher-order uniformity of the wind speed distribution and the temperature distribution in the heat treatment chamber 2 can be ensured. Acting at the wind speed,
In the heat treatment chamber 2, uniform wind speed and temperature are achieved. In this way, the heat history of each yarn 7 is made uniform, so that the physical properties of the yarn to be treated after the flameproofing treatment are made uniform. In addition, since the uniformity of the wind speed distribution and the temperature distribution can be ensured at a higher order, the processing temperature can be increased to near the temperature at which smoke is generated, and productivity can be improved by high-temperature and high-speed sintering.
【００２９】なお、熱処理室２内の風速及び温度は、処
理条件や被処理糸条の基質により異なるが、一般的には
耐炎化処理時に発生する膨大な発熱量の除去と、スモー
クの発生防止の観点から決定される。The wind speed and temperature in the heat treatment chamber 2 vary depending on the treatment conditions and the substrate of the yarn to be treated. In general, the enormous amount of heat generated during the oxidation treatment is removed, and the generation of smoke is prevented. Is determined from the viewpoint of
【００３０】以下、本発明の実施例について、比較例を
参照して具体的に説明する。なお、実施例及び比較例に
おいて、 「条件」 熱処理炉形式：対流加熱式熱風循環炉 熱処理室長さ：糸条の走行方向での熱処理室の長さが
１．５ｍのユニットが６基配されており、総有効長さが
９ｍ 熱処理室の幅：１．５ｍ 風向き：糸条を多数本引き揃えたシート面に対して垂直
方向 熱処理室内設定温度：２３０℃（熱処理室内中央付近の
温度) 「温度、風速の測定条件」 温度の測定：ＪＩＳ Ｋ 熱電温度計 風速の測定：常温で測定 風速測定器：日本カノマックス株式会社製 アネモマスター６１４１定温度型熱式風速計 とする。Hereinafter, examples of the present invention will be specifically described with reference to comparative examples. In the Examples and Comparative Examples, "conditions" Heat treatment furnace type: convection heating type hot air circulation furnace Heat treatment chamber length: Six units each having a length of 1.5 m in the heat treatment chamber in the running direction of the yarn are arranged. The total effective length is 9 m. The width of the heat treatment room: 1.5 m. The wind direction: perpendicular to the sheet surface where many yarns are aligned. Set temperature of the heat treatment room: 230 ° C (temperature near the center of the heat treatment room). Measurement conditions of wind speed ”Temperature measurement: JIS K thermoelectric thermometer Measurement of wind speed: measured at room temperature Wind speed measuring device: Anemomaster 6141 constant temperature thermal anemometer manufactured by Nippon Kanomax Co., Ltd.
【００３１】「実施例」図１及び図２に示す耐炎化熱処
理装置１における熱処理室２内の中央付近での温度及び
風速を１．０ｍ／ｓｅｃに設定し、熱風循環室３におけ
る循環域での風速を２．７ｍ／ｓｅｃ、保温域での分速
を２．１ｍ／ｓｅｃに設定して、前記熱処理室２内の風
速分布及び温度分布を測定した。その結果、前記熱処理
室２内の風速分布は、熱処理室内の上記設定風速に対し
て±０．０５ｍ／ｓｅｃ以内であった。また、温度分布
も熱処理室内の上記設定温度に対して±２℃以内であ
り、ほぼ均一な風速分布及び温度分布となっていた。同
耐炎化熱処理装置１を使用して、前記風速に設定し、ト
ータルテックスが１８００の糸条に耐炎化熱処理を施し
た結果、耐炎化糸条の密度斑は殆ど無く、物性が均一な
耐炎化糸条を得ることができた。[Embodiment] In the oxidizing heat treatment apparatus 1 shown in FIGS. 1 and 2, the temperature and the wind speed near the center of the heat treatment chamber 2 were set to 1.0 m / sec. Was set at 2.7 m / sec, and the minute speed in the heat retaining region was set at 2.1 m / sec, and the wind speed distribution and the temperature distribution in the heat treatment chamber 2 were measured. As a result, the wind speed distribution in the heat treatment chamber 2 was within ± 0.05 m / sec with respect to the set wind speed in the heat treatment chamber. Further, the temperature distribution was within ± 2 ° C. with respect to the set temperature in the heat treatment chamber, and the wind speed distribution and the temperature distribution were almost uniform. Using the oxidizing heat treatment apparatus 1, the wind speed was set and the oxidizing heat treatment was performed on the yarn having a total tex of 1800. As a result, there was almost no unevenness in the density of the oxidizing yarn and uniform oxidization. Yarn was obtained.
【００３２】「比較例１」実施例と同様の前記耐炎化熱
処理装置において、熱処理室内の中央付近での設定風速
を実施例１と同様に１．０ｍ／ｓｅｃに設定し、熱風循
環室における循環域での風速を２．７ｍ／ｓｅｃ、保温
域での分速を０．３ｍ／ｓｅｃに設定して、前記熱処理
室内の風速分布及び温度分布を測定した。その結果、前
記熱処理室内の風速分布は、熱処理室内の上記設定風速
に対して±０．０５ｍ／ｓｅｃ以内であったが、温度分
布は熱処理室内の上記設定温度に対して±５℃以内と、
ばらつきがみられた。同耐炎化熱処理装置を使用して、
前記の風速に設定し、トータルテックスが１８００の糸
条に耐炎化熱処理を施した結果、耐炎化糸条の密度斑は
無かったが、熱処理室内の温度斑が大きいために処理温
度を上げることができず、耐炎化処理に長時間を要し
た。[Comparative Example 1] In the same heat treatment apparatus as in Example 1, the set wind speed near the center of the heat treatment chamber was set to 1.0 m / sec as in Example 1, and the air was circulated in the hot air circulation chamber. The wind speed in the heat treatment chamber was set at 2.7 m / sec, and the partial speed in the heat insulation area was set at 0.3 m / sec, and the wind speed distribution and the temperature distribution in the heat treatment chamber were measured. As a result, the wind speed distribution in the heat treatment chamber was within ± 0.05 m / sec with respect to the set wind speed in the heat treatment chamber, but the temperature distribution was within ± 5 ° C. with respect to the set temperature in the heat treatment chamber,
Variation was observed. Using the same oxidation heat treatment equipment,
The wind speed was set as above, and the total tex was subjected to oxidizing heat treatment for the 1800 yarn. As a result, there was no density unevenness of the oxidized yarn, but the processing temperature could be increased because the temperature unevenness in the heat treatment chamber was large. It was not possible, and it took a long time for the oxidation treatment.
【００３３】「比較例２」実施例と同様の耐炎化熱処理
装置を用いて、熱処理室内の中央付近での設定風速を実
施例１と同様に１．０ｍ／ｓｅｃに設定し、熱風循環室
における循環域での風速を０．７ｍ／ｓｅｃ、保温域で
の分速を２．１ｍ／ｓｅｃに設定して、前記熱処理室内
の風速分布及び温度分布を測定した。その結果、前記熱
処理室内の風速分布は、熱処理室内の上記設定風速に対
して±０．０５ｍ／ｓｅｃ以内であり、温度分布も熱処
理室内の上記設定温度に対して±２℃以内と、いずれも
熱処理室内においてほぼ均一であった。同耐炎化熱処理
装置でトータルテックスが１８００の糸条に耐炎化熱処
理を施した結果、耐炎化糸条の密度斑は殆ど無く、処理
室内の温度斑も小さかった。しかしながら、上述の風速
とするためには、熱風循環室における循環領域の容積が
大きくなるため、耐炎化熱処理装置の壁部かの放熱量が
大きくなり、消費電力が増大してしまい、耐炎化繊維の
製造コストを低減することができなかった。[Comparative Example 2] Using the same oxidizing heat treatment apparatus as in the example, the set wind speed near the center of the heat treatment chamber was set to 1.0 m / sec as in Example 1, and The wind speed in the circulation zone was set to 0.7 m / sec, and the partial speed in the heat insulation zone was set to 2.1 m / sec, and the wind speed distribution and the temperature distribution in the heat treatment chamber were measured. As a result, the wind speed distribution in the heat treatment chamber is within ± 0.05 m / sec with respect to the set wind speed in the heat treatment chamber, and the temperature distribution is also within ± 2 ° C. with respect to the set temperature in the heat treatment chamber. It was almost uniform in the heat treatment room. As a result of subjecting the yarn having a total tex of 1800 to the flame-resistant heat treatment with the same flame-resistant heat treatment apparatus, there was almost no density unevenness of the fire-resistant yarn, and the temperature unevenness in the processing chamber was small. However, in order to achieve the above-mentioned wind speed, the volume of the circulation region in the hot-air circulation chamber becomes large, so that the amount of heat radiated from the wall of the oxidizing heat treatment device increases, the power consumption increases, and the oxidizing fiber increases. Could not be reduced in manufacturing cost.
【００３４】「比較例３」実施例の耐炎化熱処理装置か
ら保温域を除いた耐炎化熱処理装置において、熱処理室
内の中央付近での設定風速を実施例１と同様に１．０ｍ
／ｓｅｃに設定し、熱風循環室における循環域での風速
を３．４ｍ／ｓｅｃに設定して、前記熱処理室内の風速
分布及び温度分布を測定した。その結果、前記熱処理室
内の風速分布は、熱処理室内の上記設定風速に対して±
０．０５ｍ／ｓｅｃ以内であり、ほぼ均一であったが、
温度分布は熱処理室内の上記設定温度に対して±７℃以
内と、バラツキが大きなものであり、特に、ヒータ及び
熱風循環ファンが配されている側の壁部近傍で最も高温
となっていた。同耐炎化熱処理装置によりトータルテッ
クスが１８００の糸条に耐炎化熱処理を施した結果、耐
炎化糸条の密度斑は殆ど無かったが、束切れを生じるな
ど、工程安定性は不安定であった。[Comparative Example 3] In the oxidizing heat treatment apparatus of the embodiment except for the heat insulation region, the set wind speed near the center of the heat treatment chamber was set at 1.0 m as in the first embodiment.
/ Sec, and the wind speed in the hot air circulation chamber in the circulation region was set to 3.4 m / sec, and the wind speed distribution and the temperature distribution in the heat treatment chamber were measured. As a result, the wind speed distribution in the heat treatment chamber is ±± with respect to the set wind speed in the heat treatment chamber.
Within 0.05 m / sec, it was almost uniform,
The temperature distribution had a large variation within ± 7 ° C. with respect to the above-mentioned set temperature in the heat treatment chamber, and the temperature was highest especially near the wall on the side where the heater and the hot air circulation fan were arranged. As a result of subjecting the yarn having a total tex of 1800 to the oxidizing heat treatment by the oxidizing heat treatment apparatus, there was almost no density unevenness of the oxidizing yarn, but the process stability was unstable, for example, the bundle was broken. .
【００３５】「比較例４」図３及び図４に示す従来の耐
炎化熱処理装置１′を使用して、熱処理室２′内の中央
付近での設定風速を１．０ｍ／ｓｅｃに設定し、熱風循
環室３′での風速を３．４ｍ／ｓｅｃに設定して、前記
熱処理室２′内の風速分布及び温度分布を測定した。そ
の結果、前記熱処理室内の風速分布は、熱処理室内の上
記設定風速に対して±０．０５ｍ／ｓｅｃ以内であり、
ほぼ均一であったが、温度分布は熱処理室内の上記設定
温度に対して±８℃以内と、バラツキが大きなものであ
り、特に、ヒータ及び熱風循環ファンが配されている側
の壁部近傍で最も高温となっていた。[Comparative Example 4] Using the conventional oxidizing heat treatment apparatus 1 'shown in Figs. 3 and 4, the set wind speed near the center of the heat treatment chamber 2' was set to 1.0 m / sec. The wind speed in the hot air circulation chamber 3 'was set to 3.4 m / sec, and the wind speed distribution and the temperature distribution in the heat treatment chamber 2' were measured. As a result, the wind speed distribution in the heat treatment chamber is within ± 0.05 m / sec with respect to the set wind speed in the heat treatment chamber,
Although the temperature distribution was substantially uniform, the temperature distribution was large within ± 8 ° C. with respect to the above set temperature in the heat treatment chamber, and the temperature distribution was large, particularly near the wall on the side where the heater and the hot air circulation fan were arranged. It was the hottest.
【００３６】同耐炎化熱処理装置によりトータルテック
スが１８００の糸条に耐炎化熱処理を施した結果、耐炎
化糸条の密度斑もヒータ及び熱風循環ファンが配されて
いる側を走行する糸条において大きなものとなり、ま
た、束切れを生じるなど、工程安定性も極めて不安定で
あった。As a result of subjecting the yarn having a total tex of 1800 to the oxidization heat treatment by the oxidization heat treatment apparatus, the density unevenness of the oxidization resistant yarn is also reduced in the yarn running on the side where the heater and the hot air circulation fan are arranged. The process stability was extremely unstable, for example, the size became large and the bundle was cut.
【図１】本発明の実施形態である耐炎化熱処理装置の概
略縦断面図である。FIG. 1 is a schematic vertical sectional view of an oxidizing heat treatment apparatus according to an embodiment of the present invention.
【図２】上記耐炎化熱処理装置の概略横断面図である。FIG. 2 is a schematic cross-sectional view of the oxidation heat treatment apparatus.
【図３】従来の耐炎化熱処理装置の概略縦断面図であ
る。FIG. 3 is a schematic longitudinal sectional view of a conventional oxidizing heat treatment apparatus.
【図４】上記耐炎化熱処理装置の概略横断面図である。FIG. 4 is a schematic cross-sectional view of the oxidation heat treatment apparatus.
１，１′ 耐炎化熱処理装置 ２ 熱処理室 ２ａ 上壁（熱風導入部） ２ｂ 下壁（熱風導出部） ３ 熱風循環室 ３ａ 循環域 ３ｂ 保温域 ３ｃ 排気口 ４ 熱風循環室 ４ａ 排気口 ５ ヒータ ６ 熱風循環ファン ７ 糸条 1,1 'Oxidation heat treatment apparatus 2 Heat treatment chamber 2a Upper wall (hot air introduction section) 2b Lower wall (hot air outlet section) 3 Hot air circulation chamber 3a Circulation area 3b Heat insulation area 3c Exhaust port 4 Hot air circulation chamber 4a Exhaust port 5 Heater 6 Hot air circulation fan 7 yarn
───────────────────────────────────────────────────── フロントページの続き (72)発明者 町田 和之 愛知県豊橋市牛川通４丁目１番地２号 三 菱レイヨン株式会社豊橋事業所内 (72)発明者 稲垣 ▲博▼司 広島県大竹市御幸町20番１号 三菱レイヨ ン株式会社中央技術研究所内 (72)発明者 川村 篤志 広島県大竹市御幸町20番１号 三菱レイヨ ン株式会社中央技術研究所内 Ｆターム(参考） 4K050 AA02 BA09 CC07 CC08 CC10 CD08 CD16 4L037 CS02 CT10 CT12 CT27 CT42 PS20 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazuyuki Machida 4-1-2, Ushikawadori, Toyohashi City, Aichi Prefecture Inside the Toyohashi Works of Mitsubishi Rayon Co., Ltd. (72) Inventor ▲ Hirakushi, Hiroshima Prefecture 20-1 Machi-cho, Central Research Laboratory of Mitsubishi Rayon Co., Ltd. (72) Inventor Atsushi Kawamura 20-1 Miyuki-cho, Otake City, Hiroshima Prefecture F-term in Central Research Laboratory of Mitsubishi Rayon Co., Ltd. 4K050 AA02 BA09 CC07 CC08 CC10 CD08 CD16 4L037 CS02 CT10 CT12 CT27 CT42 PS20
Claims (3)
と共に、熱風導入部と熱風導出部とを有する熱処理室
と、 前記熱風導入部及び前記熱風導出部を導通させると共
に、それぞれにヒータ及びファンを有し、前記熱処理室
に沿って糸条の走行方向に配された複数の熱風循環室
と、を備えてなる糸条の耐炎化熱処理装置において、 前記熱風循環室は、保温域と、前記熱風導入部及び前記
熱風導出部の間にヒータ及びファンを有する循環域とを
備え、同熱風循環室により前記熱処理室の四方が囲まれ
てなることを特徴とする耐炎化熱処理装置。1. A heat treatment chamber having a plurality of yarns running side by side in a sheet shape and having a hot air introduction section and a hot air derivation section; And a plurality of hot air circulation chambers arranged in the running direction of the yarn along the heat treatment chamber, wherein the hot air circulation chamber has a heat insulation zone. A circulating region having a heater and a fan between the hot air introducing section and the hot air outlet section, wherein the hot air circulating chamber surrounds the heat treatment chamber on all sides.
熱風循環室の前記循環域と前記保温域とが糸条の走行方
向に交互に配列されてなる請求項１記載の耐炎化熱処理
装置。2. The heat treatment apparatus according to claim 1, wherein the plurality of hot air circulating chambers are arranged such that the circulating areas and the heat retaining areas of the adjacent hot air circulating chambers are alternately arranged in the running direction of the yarn. .
循環域及び前記保温域とにおける風速が、 （３／２）×ｖ0 ≦ｖ1 ≦１０×ｖ0 ・・・（１） （１／２）×ｖ0 ≦ｖ2 ≦１０×ｖ0 ・・・（２） ｖ0 ：前記処理室における風速 (m/sec) ｖ1 ：前記循環域における風速 (m/sec) ｖ2 ：前記保温域における風速 (m/sec) を満足してなる請求項１又は２記載の耐炎化熱処理装
置。3. The wind velocity in the heat treatment chamber and the circulation area and the heat insulation area of the hot air circulation chamber is (3/2) × v 0 ≦ v 1 ≦ 10 × v 0 (1) (1) (1/2) × v 0 ≦ v 2 ≦ 10 × v 0 (2) v 0 : wind speed in the processing chamber (m / sec) v 1 : wind speed in the circulation region (m / sec) v 2 : The flameproofing heat treatment apparatus according to claim 1 or 2, wherein a wind speed (m / sec) in the heat retaining region is satisfied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35713898A JP4236316B2 (en) | 1998-12-16 | 1998-12-16 | Flame-resistant heat treatment equipment for yarn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35713898A JP4236316B2 (en) | 1998-12-16 | 1998-12-16 | Flame-resistant heat treatment equipment for yarn |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000178836A true JP2000178836A (en) | 2000-06-27 |
| JP4236316B2 JP4236316B2 (en) | 2009-03-11 |
Family
ID=18452581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35713898A Expired - Lifetime JP4236316B2 (en) | 1998-12-16 | 1998-12-16 | Flame-resistant heat treatment equipment for yarn |
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| Country | Link |
|---|---|
| JP (1) | JP4236316B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002161441A (en) * | 2000-11-30 | 2002-06-04 | Toho Tenax Co Ltd | Apparatus for flameproofing heat treatment |
| JP2008280640A (en) * | 2007-05-10 | 2008-11-20 | Mitsubishi Rayon Co Ltd | Flameproofing heat-treatment apparatus |
| JP2010500525A (en) * | 2006-08-11 | 2010-01-07 | アイゼンマン アンラゲンバウ ゲゼルシャフト ミット ペシュレンクテル ハフツングウント コンパニー コマンディトゲゼルシャフト | High temperature air furnace module and high temperature air furnace |
| CN109459525A (en) * | 2018-12-27 | 2019-03-12 | 山东宏业纺织股份有限公司 | A kind of device and test method improving flame-retardant yarn flame retardant property testing precision |
-
1998
- 1998-12-16 JP JP35713898A patent/JP4236316B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002161441A (en) * | 2000-11-30 | 2002-06-04 | Toho Tenax Co Ltd | Apparatus for flameproofing heat treatment |
| JP4565737B2 (en) * | 2000-11-30 | 2010-10-20 | 東邦テナックス株式会社 | Flameproof heat treatment equipment |
| JP2010500525A (en) * | 2006-08-11 | 2010-01-07 | アイゼンマン アンラゲンバウ ゲゼルシャフト ミット ペシュレンクテル ハフツングウント コンパニー コマンディトゲゼルシャフト | High temperature air furnace module and high temperature air furnace |
| JP2008280640A (en) * | 2007-05-10 | 2008-11-20 | Mitsubishi Rayon Co Ltd | Flameproofing heat-treatment apparatus |
| CN109459525A (en) * | 2018-12-27 | 2019-03-12 | 山东宏业纺织股份有限公司 | A kind of device and test method improving flame-retardant yarn flame retardant property testing precision |
| CN109459525B (en) * | 2018-12-27 | 2024-01-19 | 山东宏业纺织股份有限公司 | Device for improving flame retardant property test accuracy of flame retardant yarns |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4236316B2 (en) | 2009-03-11 |
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