JPH0550428A - Method for fixing stationary blade of pelletizer - Google Patents
Method for fixing stationary blade of pelletizerInfo
- Publication number
- JPH0550428A JPH0550428A JP3215293A JP21529391A JPH0550428A JP H0550428 A JPH0550428 A JP H0550428A JP 3215293 A JP3215293 A JP 3215293A JP 21529391 A JP21529391 A JP 21529391A JP H0550428 A JPH0550428 A JP H0550428A
- Authority
- JP
- Japan
- Prior art keywords
- fixed blade
- stationary blade
- fixed
- pelletizer
- blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、押出機からストランド
状に押出した有機高分子材料をペレットに切断し、ペレ
ットを製造するために広く用いられているペレタイザー
（ストランドカッタともいう）の固定刃取付方法に関す
る。BACKGROUND OF THE INVENTION The present invention relates to a fixed blade of a pelletizer (also called a strand cutter) which is widely used for manufacturing pellets by cutting organic polymer material extruded in a strand form from an extruder into pellets. Regarding mounting method.
【０００２】[0002]
【従来の技術】熱可塑性樹脂は、ほとんどが一旦ペレッ
ト化されてから、プラスチックス成形品に成形加工され
ている。ペレット化する方法の一つに、ストランドカッ
ト法がある。これは、溶融樹脂を押出機先端または歯車
ポンプ出口に取付けた多孔ダイでひも状にして押出し、
冷却、凝固した後、ペレタイザーで短く切断するもので
ある。2. Description of the Related Art Most of thermoplastic resins are once pelletized and then molded into plastics molded products. One of the methods for pelletizing is the strand cut method. This is a molten resin extruded into a string with a perforated die attached to the extruder tip or gear pump outlet,
After cooling and solidifying, it is cut into short pieces with a pelletizer.
【０００３】ペレタイザーは、一般に、回転している２
本のロールで凝固した複数のひも状プラスチックス、す
なわちストランドを挾み込んで引取り、所定の速度で引
取ロールと固定刃先端との間のストランド支持台面上に
送出し、歯車状に複数の刃を有する回転刃で切断する構
造になっている。固定刃は、刃先を構成するチップを台
金に固着したものであって、刃先がストランドの進行方
向と直角方向、すなわち回転刃の刃先と一定のクリアラ
ンスをおいて平行になるように、ペレタイザーの固定刃
台に直接ボルトなどで固定されていた。Pelletizers are generally two rotating
A plurality of string-shaped plastics solidified by a roll of a book, that is, a strand is sandwiched and taken out, and is delivered at a predetermined speed onto the strand support base surface between the take-up roll and the tip of the fixed blade, and a plurality of gears It has a structure of cutting with a rotary blade having a blade. The fixed blade is one in which a tip constituting a cutting edge is fixed to a base metal, and the cutting edge is parallel to the moving direction of the strand, that is, the cutting edge of the rotary blade with a certain clearance, so that the pelletizer It was fixed directly to the fixed blade with bolts.
【０００４】図３は、従来の固定刃取付方法を説明する
ための斜視図である。図示した例においては、固定刃３
２は、刃先３５がストランド３１の進行方向に直角にな
るように、固定刃台３６の上面に台金部３４の両端部を
ボルト３７で直接緊結、固定している。３３はチップで
ある。本例の他、ストランドの進行方向に直角になるよ
うに固定刃台に設けた固定刃取付面に、固定刃をボルト
などで直接緊結、固定した例もある。FIG. 3 is a perspective view for explaining a conventional fixed blade mounting method. In the illustrated example, the fixed blade 3
In No. 2, both ends of the base metal portion 34 are directly fastened and fixed to the upper surface of the fixed blade base 36 with bolts 37 so that the blade edge 35 is perpendicular to the traveling direction of the strand 31. 33 is a chip. In addition to this example, there is also an example in which the fixed blade is directly tightened and fixed with a bolt or the like on the fixed blade mounting surface provided on the fixed blade base so as to be perpendicular to the traveling direction of the strand.
【０００５】[0005]
【発明が解決しようとする課題】上記のペレタイザー
は、もともと長時間の連続運転を前提に設計された、能
率のよい装置である。しかし、問題もあった。固定刃の
交換、取付けには、ボルトなどの緊結部材を取外す必要
があり、長い刃先の位置を調整しつつ再度取付ける作業
は、かなりの熟練と時間を要した。また、ボルトなどで
局所的に緊結しているために、緊結部と緊結部の中間部
分で固定刃と固定刃取付面との間に隙間を生じ、精度が
悪くなるばかりでなく、運転中に振動が起こって大きな
騒音になり、労働衛生上好ましくなかった。The above pelletizer is an efficient device originally designed for long-term continuous operation. But there were problems. In order to replace and install the fixed blade, it is necessary to remove the tightening members such as bolts, and the work of reattaching while adjusting the position of the long blade requires considerable skill and time. Also, because the bolts are locally tightened, a gap is created between the fixed blade and the fixed blade mounting surface at the intermediate portion between the tightened portion and the fixed blade, which not only deteriorates the accuracy but also during operation. Vibration caused loud noise, which was unfavorable for occupational health.
【０００６】とくに、最近、ガラス転移点の高い高分子
物質や、繊維補強材を含む複合材を切断することが多く
なり、このような堅い材料を切断するときには、以前に
もまして固定刃の損耗が激しく、その交換時間を節減
し、操業率を向上することが課題になってきた。また、
固定刃は、刃先を研磨し直して何回も繰返し使用するう
ちに、緊結部以外の部分が湾曲変形し、固定刃の寿命に
好ましくない影響が出てくる。湾曲変形を避けるには頑
丈な固定刃を使用すればよいが、そうすると、固定刃が
重くなり、交換調整が益々容易ではなくなる。堅い材料
を切断するときには、騒音や振動がさらに大きく、騒音
防止のためにペレタイザーの据付に防振パッキンを使用
したり、機器を防音シートで覆うなどするが、十分な騒
音防止効果は得られなかった。In particular, recently, a polymer material having a high glass transition point and a composite material containing a fiber reinforcing material are often cut. When cutting such a hard material, the wear of the fixed blade is more increased than before. However, it has become an issue to reduce the replacement time and improve the operating rate. Also,
When the fixed blade is re-polished and repeatedly used many times, the portion other than the binding portion is bent and deformed, which adversely affects the life of the fixed blade. Sturdy fixed blades can be used to avoid bending deformations, but this makes the fixed blades heavy and replacement adjustments less easy. When cutting hard materials, noise and vibration are even louder. To prevent noise, use anti-vibration packing to install the pelletizer or cover the equipment with a sound-proof sheet, but not enough noise-prevention effect. It was
【０００７】これらの問題を解決する手段として、特公
表平１−５０２５７５号公報や特公表平２−５００４２
５号公報に、ストランドの進行方向に対し直角に設けた
ガイドに沿って固定刃を移動し、固定刃を交換すること
の出来るペレタイザーが、実公昭５８−４５０６５号公
報には、騒音を低下するために、回転刃の溝部から空気
を吸引することの出来るペレタイザーが記載されてい
る。しかし、いずれもかなりの付属装置が必要である
上、たとえば前者の手段では、再研磨した固定刃を使用
するとき、回転刃との間のクリアランスの再調整の問題
がある。As means for solving these problems, Japanese Patent Publication No. 1-502575 and Japanese Patent Publication No. 2-50042.
Japanese Patent Publication No. 58-45065 discloses a pelletizer in which the fixed blade can be replaced by moving the fixed blade along a guide provided at right angles to the traveling direction of the strand. Therefore, a pelletizer capable of sucking air from the groove of the rotary blade is described. However, both require a considerable amount of auxiliary equipment and, for example, in the former method, there is a problem of readjustment of the clearance between the rotary blade and the fixed blade when regrinded.
【０００８】[0008]
【課題を解決するための手段】本発明者は、このような
従来のペレタイザーの抱える問題を種々検討した結果、
固定刃台への固定刃取付方法を改良すれば、上記の問題
はかなり改善されると判断し、試行錯誤の後、本発明を
完成した。The present inventor has studied various problems of such a conventional pelletizer, and as a result,
It was judged that the above problems would be considerably improved by improving the method of attaching the fixed blade to the fixed blade base, and the present invention was completed after trial and error.
【０００９】すなわち、前記の課題を解決するため、本
発明は、引取ロールから送出されるストランドを、回転
刃と固定刃との間で切断し、ペレットを製造するペレタ
イザーの固定刃取付方法において、固定刃とほぼ同じ長
さを有する固定刃キーバーを用い、前記台金部を、スト
ランドの進行方向に直角になるようペレタイザーの固定
刃台に設けた固定刃取付面と、前記固定刃キーバーとの
間に挾み、この固定刃キーバーを固定刃台に緊結せしめ
ることによって、固定刃を固定刃取付面に固定すること
を特徴とするペレタイザーの固定刃取付方法を提供す
る。That is, in order to solve the above-mentioned problems, the present invention provides a method for mounting a fixed blade of a pelletizer, which cuts a strand fed from a take-up roll between a rotary blade and a fixed blade to produce pellets, Using a fixed blade key bar having almost the same length as the fixed blade, the base metal part, the fixed blade mounting surface provided on the fixed blade base of the pelletizer so as to be perpendicular to the traveling direction of the strand, and the fixed blade key bar A fixed blade mounting method for a pelletizer characterized in that the fixed blade is fixed to a fixed blade mounting surface by sandwiching the fixed blade key bar and tightly binding the fixed blade key bar to a fixed blade base.
【００１０】[0010]
【実施態様例】以下、本発明を、実施態様例を示す図面
を参照しつつ説明する。図１は、本発明のペレタイザー
の実施態様例を示す側断面概略構造図（断面ハッチング
省略）である。図２は、図１に示したペレタイザーの固
定刃取付部分の詳細を示す斜視図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings showing the embodiments. FIG. 1 is a side sectional schematic structural view (cross-section hatching omitted) showing an embodiment example of a pelletizer of the present invention. FIG. 2 is a perspective view showing details of a fixed blade mounting portion of the pelletizer shown in FIG.
【００１１】本実施例では、ストランド１（図１では省
略）は、シュート１６を通して上ロール１２と下ロール
１３とからなる引取ロール１１で引取られ、スクレーパ
１４で下ロール１３への巻付きを防止されつつ、ストラ
ンド支持台面１５上を、その先端の固定刃２の方へと送
られる。送られてきたストランド１は、歯車状の刃を有
する回転刃５と、固定刃２との間で所定の長さに切断さ
れる。In this embodiment, the strand 1 (not shown in FIG. 1) is taken up by the take-up roll 11 consisting of the upper roll 12 and the lower roll 13 through the chute 16 and the scraper 14 prevents the winding around the lower roll 13. While being conveyed, it is sent on the strand support base surface 15 toward the fixed blade 2 at the tip thereof. The sent strand 1 is cut into a predetermined length between the rotary blade 5 having a gear-shaped blade and the fixed blade 2.
【００１２】刃先を構成するチップ３を台金４に固着し
た固定刃２は、ほぼ同じ長さを有する固定刃キーバー９
を用いて、刃先がストランド１の進行方向と直角方向に
なるように固定刃台６に取付けられる。すなわち、台金
４を、ストランド１の進行方向に直角になるよう固定刃
台６に設けた固定刃取付面７と、固定刃キーバー９との
間に挾み、本実施態様例では、この固定刃取付面７の裏
面８から固定刃キーバー９を固定刃台６にボルト１０で
緊結せしめることによって、固定刃２を固定刃取付面７
に固定する。１８はペレタイザーのベットである。The fixed blade 2 in which the tip 3 constituting the cutting edge is fixed to the base metal 4 has a fixed blade key bar 9 having substantially the same length.
Is attached to the fixed blade base 6 so that the blade edge is perpendicular to the traveling direction of the strand 1. That is, the base metal 4 is sandwiched between the fixed blade attachment surface 7 provided on the fixed blade base 6 so as to be at right angles to the traveling direction of the strand 1, and the fixed blade key bar 9, and in this embodiment, this fixation is performed. The fixed blade 2 is fixed to the fixed blade mounting surface 7 by fastening the fixed blade key bar 9 to the fixed blade base 6 from the back surface 8 of the blade mounting surface 7 with the bolt 10.
Fixed to. 18 is a pelletizer bet.
【００１３】固定刃キーバー９の形状は、台金４を固定
刃取付面７との間に挾んで、これを固定刃取付面７に密
着、固定せしめるのに効果的な形状であればよく、とく
に限定されない。しかし、台金４を確実に精度よく固定
するために、固定刃キーバー９は、台金４との接触面を
単一の平面とせず、たとえば長手方向に隙間１７を設
け、結果的に安定して固定刃を固定できるよう配慮して
設計、製作することが好ましい。固定刃キーバー９は、
固定刃の切断機能を有するチップ部分を確実に固定する
ことが目的であるから、固定刃キーバー９の長さと取付
位置は、少なくともこの目的に対応することができれば
足りる。The fixed blade key bar 9 may have any shape as long as it is effective for sandwiching the base metal 4 between the fixed blade mounting surface 7 and closely fixing it to the fixed blade mounting surface 7. There is no particular limitation. However, in order to securely and accurately fix the base metal 4, the fixed blade key bar 9 does not have a single flat contact surface with the base metal 4, and for example, a gap 17 is provided in the longitudinal direction, resulting in stable stability. It is preferable to design and manufacture so that the fixed blade can be fixed by using the above. The fixed blade key bar 9
Since the purpose is to securely fix the tip portion having the cutting function of the fixed blade, it is sufficient that the length and the mounting position of the fixed blade key bar 9 can meet at least this purpose.
【００１４】このような固定刃キーバー９を使用するこ
とによって、台金４はその全長にわたって固定刃取付面
７に均等に密着され、従来のように固定刃取付面７との
間に隙間を生ずることはない。また、従来のように、緊
結部と緊結部の中間で固定刃が湾曲することもない。By using such a fixed blade key bar 9, the base metal 4 is evenly adhered to the fixed blade mounting surface 7 over its entire length, and a gap is formed between the base metal 4 and the fixed blade mounting surface 7 as in the conventional case. There is no such thing. In addition, unlike the conventional case, the fixed blade does not curve in the middle between the tightly bound portions.
【００１５】固定刃キーバー９を固定刃台６に緊結する
手段は本実施例に限らず、たとえば、固定刃キーバー９
の表面から固定刃台６にボルトで緊結してもよい。しか
し、回転刃５が邪魔になるので、通常は裏面８側から緊
結することが好ましい。The means for connecting the fixed blade key bar 9 to the fixed blade base 6 is not limited to this embodiment, and for example, the fixed blade key bar 9 may be used.
The surface of the fixed blade base 6 may be tightly connected with a bolt. However, since the rotary blade 5 is an obstacle, it is usually preferable to tighten the rotary blade 5 from the back surface 8 side.
【００１６】[0016]
【実施例】先に図示したのとほぼ同じ構造を有する本発
明のペレタイザー（株式会社田中鉄工所製：ＴＭＳ型ペ
レタイザーの改造）を試作した。この試作機には、長さ
２２０ｍｍ、直径１４８ｍｍの回転刃と、長さ２２０ｍ
ｍの固定刃とを取付けた。材質は共にＳＵＳ３０４で、
刃先には超硬チップを固着した。この固定刃を、図示し
たのとほぼ同じ形状のＳＵＳ３０４製固定刃キーバーを
用い、固定刃取付面の裏側から、等間隔の３本の緊結用
ボルトで固定刃台に固定した。本発明の固定刃の取付方
法に改造していないペレタイザーでは、なかなか精度よ
く固定刃を取付けることの出来なかった未経験者でも、
この試作機では、±１／１００ｍｍ以下の精度で、隙間
を生ずることなく、容易に、短時間のうちに固定刃を固
定刃取付面に取付けることができた。EXAMPLES A pelletizer of the present invention (manufactured by Tanaka Iron Works Co., Ltd .: a modification of a TMS type pelletizer) having substantially the same structure as that shown in the above was prototyped. This prototype has a rotating blade with a length of 220 mm and a diameter of 148 mm, and a length of 220 m.
m fixed blade was attached. Both materials are SUS304,
A carbide tip was fixed to the cutting edge. The fixed blade was fixed to the fixed blade base from the back side of the fixed blade mounting surface with three equally-spaced fastening bolts using a fixed blade key bar made of SUS304 having substantially the same shape as shown in the figure. With a pelletizer that has not been modified to the fixed blade mounting method of the present invention, even an inexperienced person who could not mount the fixed blade quite accurately,
With this prototype, the fixed blade could be easily attached to the fixed blade mounting surface within a short time with an accuracy of ± 1/100 mm or less and without creating a gap.
【００１７】この試作機を使用し、直径３ｍｍのポリア
ミド樹脂のストランド２１本を、ストランドの送り速度
毎分４０ｍで、長さ３ｍｍに切断した。切断されたペレ
ットは問題なく、良好な品質であった。切断時に固定刃
の振動はなく騒音は、約９０フォンで従来に較べ約５〜
８フォン低減した。Using this prototype, 21 strands of polyamide resin having a diameter of 3 mm were cut into a length of 3 mm at a strand feeding speed of 40 m / min. The cut pellets were of good quality with no problems. There is no vibration of the fixed blade when cutting, and the noise is about 90 phon and it is about 5
Reduced by 8 phons.
【００１８】[0018]
【発明の効果】本発明を実施することによって、そのペ
レタイザーの固定刃の交換は、熟練者でなくとも、簡単
に、短時間で、従来よりもはるかに精度よく実施するこ
とができる。しかも、固定刃取付面との間に隙間のでき
る心配はない。回転刃との間のクリアランスの調整も容
易になる。固定刃は、全長にわたって均一に押さえられ
ているので、堅い材料を切断しても撓みを生ぜず、何回
も再研磨し、取付直し使用しても、湾曲変形することは
ない。固定刃と固定刃台とが密着され、隙間を生ずるこ
とがないので、堅い材料を切断しても、固定刃に振動が
起こらず、騒音が小さい。By carrying out the present invention, the fixed blade of the pelletizer can be replaced easily by a person who is not skilled in the art, in a short time and with much higher accuracy than in the prior art. Moreover, there is no concern that a gap will form between the fixed blade mounting surface. The clearance between the rotary blade and the rotary blade can be easily adjusted. Since the fixed blade is pressed uniformly over the entire length, it does not bend even if a hard material is cut, and it does not bend or deform even if it is re-polished many times and used again. Since the fixed blade and the fixed blade base are in close contact with each other and no gap is generated, the fixed blade does not vibrate even if a hard material is cut, and the noise is small.
【図１】 本発明のペレタイザ−の実施態様例を示す側
断面概略構造図。FIG. 1 is a schematic side sectional structural view showing an example of an embodiment of a pelletizer of the present invention.
【図２】 図１に示したペレタイザーの固定刃取付部分
の詳細を示す斜視図。FIG. 2 is a perspective view showing details of a fixed blade mounting portion of the pelletizer shown in FIG.
【図３】 従来の固定刃取付方法を説明するための斜視
図。FIG. 3 is a perspective view for explaining a conventional fixed blade attachment method.
１：ストランド ２：固定刃 ３：チップ ４：台金 ５：回転刃 ６：固定刃台
７：固定刃取付面 ８：裏面 ９：固定刃キーバー １０：ボルト
１１：引取ロール １７：隙間1: Strand 2: Fixed blade 3: Tip 4: Base metal 5: Rotating blade 6: Fixed blade base
7: Fixed blade mounting surface 8: Back surface 9: Fixed blade key bar 10: Bolt 11: Take-up roll 17: Gap
Claims (1)
回転刃と固定刃との間で切断し、ペレットを製造するペ
レタイザーの固定刃取付方法において、固定刃とほぼ同
じ長さを有する固定刃キーバーを用い、前記台金を、ス
トランドの進行方向に直角になるようにペレタイザーの
固定刃台に設けた固定刃取付面と、前記固定刃キーバー
との間に挾み、この固定刃キーバーを前記固定刃台に緊
結せしめることによって、固定刃を固定刃取付面に固定
することを特徴とするペレタイザーの固定刃取付方法。1. A strand delivered from a take-up roll,
Cut between the rotary blade and the fixed blade, in the fixed blade mounting method of the pelletizer to produce pellets, using a fixed blade key bar having almost the same length as the fixed blade, the base metal, perpendicular to the direction of travel of the strand The fixed blade is fixed between the fixed blade mounting surface provided on the fixed blade base of the pelletizer and the fixed blade key bar, and the fixed blade key bar is tightly attached to the fixed blade base to mount the fixed blade. A fixed blade mounting method for a pelletizer characterized by fixing to a surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3215293A JPH0716948B2 (en) | 1991-08-27 | 1991-08-27 | How to install a fixed blade on the pelletizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3215293A JPH0716948B2 (en) | 1991-08-27 | 1991-08-27 | How to install a fixed blade on the pelletizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0550428A true JPH0550428A (en) | 1993-03-02 |
| JPH0716948B2 JPH0716948B2 (en) | 1995-03-01 |
Family
ID=16669925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3215293A Expired - Lifetime JPH0716948B2 (en) | 1991-08-27 | 1991-08-27 | How to install a fixed blade on the pelletizer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0716948B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5768095A (en) * | 1995-03-03 | 1998-06-16 | International Business Machines Corp. | Portable computer having overhead projection capability and back lid portion with switch controlling backlight |
| US6373537B2 (en) * | 1997-04-08 | 2002-04-16 | Lg. Philips Lcd Co., Ltd. | Computer having liquid crystal display between frames attached at the edges |
| US6838810B1 (en) | 1997-03-21 | 2005-01-04 | Chunghwa Picture Tubes, Ltd. | Flat-panel display mounting system for portable computer |
| US7206037B2 (en) | 2001-05-09 | 2007-04-17 | Sanyo Electric Co., Ltd. | Display module and display unit |
| US20100276834A1 (en) * | 2007-09-17 | 2010-11-04 | Jochen Scheurich | Device for granulating plastic strands |
-
1991
- 1991-08-27 JP JP3215293A patent/JPH0716948B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5768095A (en) * | 1995-03-03 | 1998-06-16 | International Business Machines Corp. | Portable computer having overhead projection capability and back lid portion with switch controlling backlight |
| US6838810B1 (en) | 1997-03-21 | 2005-01-04 | Chunghwa Picture Tubes, Ltd. | Flat-panel display mounting system for portable computer |
| US6373537B2 (en) * | 1997-04-08 | 2002-04-16 | Lg. Philips Lcd Co., Ltd. | Computer having liquid crystal display between frames attached at the edges |
| US7206037B2 (en) | 2001-05-09 | 2007-04-17 | Sanyo Electric Co., Ltd. | Display module and display unit |
| US20100276834A1 (en) * | 2007-09-17 | 2010-11-04 | Jochen Scheurich | Device for granulating plastic strands |
| US8721317B2 (en) * | 2007-09-17 | 2014-05-13 | Automatik Plastics Machinery Gmbh | Device for granulating plastic strands |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0716948B2 (en) | 1995-03-01 |
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