JPS5878725A - Molding device for inflation film - Google Patents
Molding device for inflation filmInfo
- Publication number
- JPS5878725A JPS5878725A JP56176924A JP17692481A JPS5878725A JP S5878725 A JPS5878725 A JP S5878725A JP 56176924 A JP56176924 A JP 56176924A JP 17692481 A JP17692481 A JP 17692481A JP S5878725 A JPS5878725 A JP S5878725A
- Authority
- JP
- Japan
- Prior art keywords
- light
- resin tube
- cooling air
- inflation
- receiver
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0019—Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
- B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はインフレーションフィルムの成形装置に係シ、
特に冷却空気の吐出量が調整されるエアーリングを備え
九成形装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a blown film forming apparatus.
In particular, the present invention relates to a molding device equipped with an air ring in which the amount of cooling air discharged is adjusted.
熱可塑性樹脂素材よりフィルム中シートを製造するイン
フレーションフィルム成形加工においては、成形フィル
ムを高品質かつ一定品質にするため、樹脂バルブのフロ
ストラインを一定位置に保つ必要がある。しかしながら
このフロストラインは、押出される溶融樹脂の温度や成
形室温度などの成形加工条件の周期的あるいは一時的な
変動に伴い変動され易いものである。In the blown film molding process in which the inner sheet of the film is manufactured from a thermoplastic resin material, it is necessary to maintain the frost line of the resin valve at a constant position in order to make the molded film of high and constant quality. However, this frost line is susceptible to fluctuations due to periodic or temporary fluctuations in molding conditions such as the temperature of the molten resin to be extruded and the temperature of the molding chamber.
従来、７０ストラインを一定位置に保つためには、専ら
作業者が手動によりエアーリングの冷却空気吐出量管調
整する方法が採られていた。しかし熟練した作業者にあ
ってもこの調整畔困難であシフロストラインの一定化は
必らずしも期待し得ないものであシ、特に作業者が複数
の成形装置を調整しなければならない場合にはその困難
性を一層増していた。Conventionally, in order to maintain the 70-stroke line at a constant position, a method has been adopted in which an operator manually adjusts the cooling air discharge volume of the air ring. However, this adjustment is difficult even for experienced workers, and it is not always possible to maintain a constant shrift line, especially when workers have to adjust multiple molding devices. In some cases, the difficulty was even greater.
そこで、ダイより押出された樹脂チューブの径を光学的
手段により検出するとともに、その検知信号によって樹
脂チューブ内に圧入される圧縮空気量を自動的に調整す
る方法が知られている。しかしながらこのような方法に
あっては樹脂チューブのブローアツプ比を単母に一定化
しようとするだけのものであシ、種々の成形加工条件の
変動に対処してフロストラインを一定にするという要請
には必らずしも応えられないものであった。Therefore, a method is known in which the diameter of a resin tube extruded from a die is detected by optical means, and the amount of compressed air pressurized into the resin tube is automatically adjusted based on the detection signal. However, such a method merely attempts to make the blow-up ratio of the resin tube constant to a single value, and it is not necessary to deal with variations in various molding processing conditions and to make the frost line constant. could not necessarily be answered.
また、樹脂チューブの表面温度を検出して、それに基づ
きエアーリングの冷却空気量を調整する方法も考えられ
るが、チューブ表面は冷却空気流に晒されていることや
部分的温度差があるために有効な温度を測定すること・
が困難であり採用することができないものである。Another option is to detect the surface temperature of the resin tube and adjust the amount of cooling air in the air ring based on that, but since the tube surface is exposed to the cooling air flow and there are local temperature differences, Measuring the effective temperature
is difficult and cannot be adopted.
本発明の目的は、７０ストラインを自動的に一定位置に
保ち、高品質かつ一定品質のインフレーションフィルム
（シート）を成形することのできるインフレーションフ
ィルム成形装置と提供するにあり、本発明は、ダイよシ
押出された溶融樹脂チューブの膨張開始部から始まる樹
脂チューブ膨張領域における所定の位置に光電検出器を
配置し、との光電検出器により樹脂チューブの径を検出
するとともに、充電検出器からの信号により冷却空気吐
出量が調整されるエアーリングを備えることによシ前記
目的を達成しようとするものである。An object of the present invention is to provide a blown film forming apparatus that can automatically maintain a 70-string line at a fixed position and form a high-quality blown film (sheet). A photoelectric detector is placed at a predetermined position in the resin tube expansion region starting from the expansion start point of the extruded molten resin tube, and the diameter of the resin tube is detected by the photoelectric detector. The above object is achieved by providing an air ring in which the amount of cooling air discharged is adjusted in response to a signal.
以下、本発明の実施例を図面に基づいて説明する。Embodiments of the present invention will be described below based on the drawings.
第１図には本発明によるインフレーションフィルム成形
装置の一実施例の全体構成が示されている。FIG. 1 shows the overall structure of an embodiment of a blown film forming apparatus according to the present invention.
この図において、環状の押出リップを有するダイＩＫは
押出機２が連結され、押出機２のホッパー３から投入さ
れた樹脂素材は押出機２によシ溶融された後、ダイ１よ
り樹脂チューブ４としてチューブ状に押出される。In this figure, an extruder 2 is connected to a die IK having an annular extrusion lip, and a resin material introduced from a hopper 3 of the extruder 2 is melted by the extruder 2, and then passed through the die 1 into a resin tube 4. It is extruded into a tube shape.
前記樹脂チューブ４内には圧縮空気が封入されており、
樹脂チューブ４は膨張開始部Ａで始ｔｂ膨張の終了する
膨張終了部８に至るまでの樹脂チューブ膨張領域にて膨
張された後、樹脂パルプ５となり、案内板６およびニッ
プロール７によって折畳まれていく。Compressed air is sealed in the resin tube 4,
After the resin tube 4 is expanded in the resin tube expansion region from the expansion start part A to the expansion end part 8 where the expansion ends, it becomes resin pulp 5 and is folded by the guide plate 6 and the nip roll 7. go.
ダイ１の上面側にはエアーリング８が設けられ、このエ
アーリング８には、調整弁９を介してブロアー１０が連
結されており、調整弁９にょシェアーリング８より吐出
される冷却空気の量は調整され得るようＫなっている。An air ring 8 is provided on the upper surface side of the die 1 , and a blower 10 is connected to the air ring 8 via a regulating valve 9 . is K so that it can be adjusted.
また、エアーリング８から吐出される冷（ｐ空気によシ
樹脂チューブ４は強制的に冷却され、前記樹脂チューブ
膨張禰斌より上方のバルブ５０所定の位置にはフロスト
ラインＦが形成される。Further, the resin tube 4 is forcibly cooled by cold air discharged from the air ring 8, and a frost line F is formed at a predetermined position of the valve 50 above the resin tube expansion rod.
膨張開始部Ａおよび膨張路３郁Ｂ間の樹脂チューブ膨張
領域における所定の位置には光電検出器１１が設けられ
ている。光電検出器１１は、互いに同一高さに配置され
た投光器１２と受光器１３とにより構成され、投光器１
２から樹脂チューブ膨張領域Ａ−８の外周面上の所定の
点に接線方向から接した後に門光器１３に至るよう投光
され、また受光器１３は、光導電セル、フォトダイオー
ド、フォトトランジスター、フォトレジスター郷よシな
シ、投光器１２からの光量の変化を検出するようになっ
ている。A photoelectric detector 11 is provided at a predetermined position in the resin tube expansion region between the expansion start part A and the expansion path 3B. The photoelectric detector 11 is composed of a light emitter 12 and a light receiver 13 that are arranged at the same height.
2 to a predetermined point on the outer circumferential surface of the resin tube expansion region A-8 from a tangential direction, and then reaches a portal light device 13, and the light receiver 13 includes a photoconductive cell, a photodiode, a phototransistor, etc. , the photoresistor is designed to detect changes in the amount of light from the projector 12.
受光器１３における光量変化に基づく信号は、制御部１
４へ送られ、また制御部１４は調整弁９に連結されてお
り、前記信号に基づいて制御部１４によシ調整弁９が調
整されてエアーりング８の冷却空気吐出量が調整される
よう構成されている。なお、調整弁９は、受光器１３に
お轄る光量変化に比例して開口度が調整されるものであ
ることが望ましい。A signal based on a change in the amount of light in the light receiver 13 is sent to the control unit 1
The control unit 14 is also connected to the adjustment valve 9, and the control unit 14 adjusts the adjustment valve 9 based on the signal to adjust the amount of cooling air discharged from the air ring 8. It is configured like this. Note that it is desirable that the opening degree of the regulating valve 9 be adjusted in proportion to the change in the amount of light applied to the light receiver 13.
次に本実施例の作用につき説明する。Next, the operation of this embodiment will be explained.
投光器１２から投光された光が樹脂チューブ彰張領斌Ａ
−ＢＫおける所定の点（接して一部散乱された後、受光
器１３に至る場合はエアーリング８からは一定の冷却空
気が吐出されているが、ダイＩＫ供給される溶融樹脂の
温度上昇や成形環境の温度上昇等によってフロストライ
ンＦが上昇すると前記樹脂チ゛ユーブ彰張領域における
膨張度合が減少され、あるいは樹脂チューブ膨張領域が
上昇し、投光器１２からの光が樹脂チューブ膨張領域の
外周面に接することなく受光器１３に入光されることと
なる。したがって受光器１３における受光量が増加され
、その増加は電気的信号として制御部１４に伝えられ、
制御部１４は調整弁９をより開放、する方向に調整し、
その結果エアーリング８かもの冷却空気量が増すので７
０ストラ′インＦは下降する。The light emitted from the floodlight 12 is transmitted through the resin tube Changzhang Lingbin A.
- A certain amount of cooling air is discharged from the air ring 8 at a predetermined point in the BK (after contacting and partially scattering and reaching the receiver 13, a certain amount of cooling air is discharged from the air ring 8, but the temperature rise of the molten resin supplied to the die IK When the frost line F rises due to an increase in the temperature of the molding environment, etc., the degree of expansion in the resin tube expansion region decreases, or the resin tube expansion region rises, and the light from the projector 12 comes into contact with the outer peripheral surface of the resin tube expansion region. Therefore, the amount of light received by the light receiver 13 is increased, and the increase is transmitted to the control unit 14 as an electrical signal.
The control unit 14 adjusts the regulating valve 9 in the direction of opening it more,
As a result, the amount of cooling air for air ring 8 increases, so 7
0 Strain F descends.
一方溶融樹脂の温度下降や成形環境の温度下降等によっ
てフロストラインＦが下降すると、前記樹脂チューブ膨
張領域Ａ−８における膨張度合が増加され、あるいは樹
脂チューブ−張領域が下降し、投光器１２からの光は樹
脂チューブ膨張領域に連ぎられて受光器１３には到達し
なくなる。したがって受光器１３における受光量が極端
に減少され、その減少は電気的信号として制御部１４に
伝えられ、制御部１４は調整弁９をより閉塞する方向に
調整し、その結果エアーリング８からの冷却空気量が減
るのでフロストラインＦは上昇する。On the other hand, when the frost line F decreases due to a decrease in the temperature of the molten resin or a decrease in the temperature of the molding environment, the degree of expansion in the resin tube expansion region A-8 increases, or the resin tube tension region decreases, causing the light emitted from the projector 12 to decrease. The light is connected to the resin tube expansion region and does not reach the light receiver 13. Therefore, the amount of light received by the light receiver 13 is extremely reduced, and this reduction is transmitted as an electrical signal to the control section 14, which adjusts the regulating valve 9 in the direction of closing it more, and as a result, the amount of light received from the air ring 8 is reduced. Since the amount of cooling air decreases, the frost line F rises.
このようにしてグイ１に供給される溶融樹脂の温度や成
形環境の温度等の変動が周期的あるいは一時的に生じて
もフロストラインＦは常に一定位置に維持されることと
なる。In this way, even if the temperature of the molten resin supplied to the gooey 1 or the temperature of the molding environment changes periodically or temporarily, the frost line F is always maintained at a constant position.
このような本実施例によれば次のような効果がある。This embodiment has the following effects.
自動的に７０ストラインＦの位置が一定化されるため、
作業者が手動で調整する必要がなくなり、作業性が向上
され省力化が果される。Since the position of the 70th line F is automatically fixed,
The operator no longer needs to make manual adjustments, improving work efficiency and saving labor.
また、冷却空気流に晒されながら樹脂チューブ膨張領域
の表面温度を検出しようとする場合と異なシ、前記膨張
領域の径の変動を把えてエアーリング８の冷却空気吐出
量を、調整するものであるため、検出値に信頼性があり
、フロストラインＦの変動要因に対する対応も遂次迅速
且適確になされるという効果がある。したがって、極め
て安定した連続成形、特に高速連続成形を安定して行う
ことができる。Moreover, unlike the case where the surface temperature of the resin tube expansion region is detected while being exposed to a cooling air flow, the cooling air discharge amount of the air ring 8 is adjusted by grasping the fluctuation in the diameter of the expansion region. Therefore, the detected value is reliable, and countermeasures against the fluctuation factors of the frost line F can be quickly and accurately performed. Therefore, extremely stable continuous molding, especially high-speed continuous molding, can be stably performed.
また、成形フィルムの折中の一定化が容易に果され、厚
みひらが無く、耐衝撃強度などの機械的強度に優れ友高
品質かつ一定品質のフィルムを成形することができる。Further, the folding of the formed film can be easily made uniform, and a film of uniform quality and high quality can be formed without any thickness fluctuation and excellent mechanical strength such as impact strength.
さらに、バブル５の７０ストラインＦの高さを光学的に
検知する方法ではポリマーの種類や結晶性の違いなどに
よって信頼性ある検出が全く望めないものであったが、
上述の実施例にあっては光電検出器１１が樹脂チューブ
膨張領域に設けられているため、樹脂の種類、性質に関
係なく適用できるという効果がある。Furthermore, with the method of optically detecting the height of the 70th line F of bubble 5, reliable detection could not be expected at all due to differences in polymer type and crystallinity.
In the above-mentioned embodiment, since the photoelectric detector 11 is provided in the resin tube expansion region, there is an advantage that it can be applied regardless of the type and properties of the resin.
なお、上述の実施例においては、投光！１２および受光
器１３はそれぞれ１つづつ設けられ、投光器により投光
される一条の光が受光器１３に至るよう構成されていた
が、第２図に示される他の実施例のように樹脂チューブ
４の吐出方向と平行方向に沿って、投光器１２および受
光５１３がそれぞれ列んで複数配置され、複数の投光器
１２から複数の互いに平行な光が投光されてそれぞれ対
応する受光器１３へと至るよう構成されていてもよい。In addition, in the above-mentioned embodiment, light projection! 12 and one light receiver 13 were provided, and the configuration was such that a ray of light projected by the light emitter would reach the light receiver 13, but as in the other embodiment shown in FIG. A plurality of light emitters 12 and light receivers 513 are arranged in a row along a direction parallel to the ejection direction of 4, so that a plurality of mutually parallel lights are projected from the plurality of light emitters 12 and reach the corresponding light receivers 13. may be configured.
このような場合は、樹脂チューブ膨張領域自体の形状、
例えば急激に膨らんだ形状とか緩やかに膨らんだ形状と
か、その形状自体の変動についても検出され得るもので
ある九め、エアーリング８の冷却空気吐出量をより適確
に調整することができる。In such cases, the shape of the resin tube expansion area itself,
For example, variations in the shape itself, such as a sharply swollen shape or a gently swollen shape, can also be detected.9) The amount of cooling air discharged from the air ring 8 can be adjusted more accurately.
また、投入器１２および受光器１３を、第３図に示され
るように、樹脂チューブ膨張領域における所定の高さの
同一仮想平面上にそれぞれ複数配置し、前記同一仮想平
面上において互いに平行な複数条の光線中に樹脂チュー
ブ膨張領域の外周面が位置されるよう構成されているも
のでもよい。Further, as shown in FIG. 3, a plurality of injectors 12 and a plurality of light receivers 13 are arranged on the same virtual plane at a predetermined height in the resin tube expansion region, and a plurality of them are arranged parallel to each other on the same virtual plane. The outer circumferential surface of the resin tube expansion region may be located in the beam of light.
この場合、前記配置個所における径の微小な変化も確実
に検出されるという効果がある。In this case, there is an effect that even minute changes in the diameter at the location are reliably detected.
上述のように本発明によれば、フロストラインを自動的
に一定位置に保ち、高品質かつ一定品質のインフレーシ
ョンフィルム（シート）を成形することのできるインフ
レーションフィルム成形装置を提供できる。As described above, according to the present invention, it is possible to provide a blown film forming apparatus that can automatically maintain a frost line at a constant position and form a blown film (sheet) of high quality and constant quality.
次に本発明を実施例によシ更に詳細に説明する。Next, the present invention will be explained in more detail using examples.
実施例
５５鶴φの押出機に７０ｗφのスパイラ′ルダイ（リッ
プ巾１２ Ｋｌ ） １に取り付け、さらにグイから５
００髄の高さに８０ｔｓφのバブル安定体を取り付け、
高密度ポリエチレン（密ｆＯ，９５５、メルトインデッ
クスα０５）を用いて、樹脂温度２００℃にて、折中４
５０ｍ、肉厚３０μｍのフィルムを引取速度４０ｍ／分
でインフレーション成形を行うに際し、樹脂チューブ膨
張領域の中間点に光電検出器を配置し、７０ストライン
の位置がグイより４００ｓｓの高さく安定維持されるよ
うにエアーリングからの冷却空気吐出量を自動調整させ
た。Example 55 A 70wφ spiral die (lip width 12Kl) was attached to a Tsuruφ extruder, and further
Attach a bubble stabilizer of 80tsφ to the height of 00 marrow,
Using high-density polyethylene (density fO, 955, melt index α05), at a resin temperature of 200°C,
When performing inflation molding on a film with a length of 50 m and a wall thickness of 30 μm at a take-up speed of 40 m/min, a photoelectric detector was placed at the midpoint of the resin tube expansion area, and the position of the 70 string was stably maintained at a height of 400 ss above the guide. The amount of cooling air discharged from the air ring is automatically adjusted so that
その結果、不良成形率０で均一で高い品質のフィルムを
得た。As a result, a uniform and high quality film was obtained with a defective molding rate of 0.
第１図は本発明によるインフレーシ璽ンフイルム成形装
置〇一実施例の全体構成を示す正面図、第２図および第
３図はそれぞれ前記以外の実施例の要部を示す正面図お
よび断面図である。
Ａ・・・膨張開始部、Ｂ・・・膨張終了部、Ｆ・・・フ
ロストライン、１・・・グイ、４・・・樹脂チューブ、
５・・・樹脂バブル、８・・・エアーリング、９・・・
調整弁、１１・・・光電検出器、１２・・・投光器、１
３・・・受光器、１４・・・制御部。
代理人 弁理士 木 下 實 三
第１図FIG. 1 is a front view showing the overall configuration of an inflatable film forming apparatus according to one embodiment of the present invention, and FIGS. 2 and 3 are a front view and a sectional view showing the main parts of other embodiments, respectively. . A... Inflation start part, B... Inflation end part, F... Frost line, 1... Gui, 4... Resin tube,
5... Resin bubble, 8... Air ring, 9...
Regulating valve, 11... Photoelectric detector, 12... Floodlight, 1
3... Light receiver, 14... Control unit. Agent Patent Attorney Minoru Kinoshita Figure 1
Claims (1)
開始部から始まる樹脂チューブ膨張領域における所定の
位置に配置され且帥記位置における樹脂チューブの径を
検出する光電検出器と、この光電検出器からの信号によ
り冷却空気吐出量が調整されるエアーリングとが備えら
れているととを特徴とするインフレーションフィルム成
形装置。(1) A photoelectric detector that is arranged at a predetermined position in the resin tube expansion region starting from the expansion start point of the molten resin tube extruded through the die and detects the diameter of the resin tube at the indicated position, and this photoelectric detector 1. A blown film forming apparatus comprising: an air ring whose cooling air discharge amount is adjusted according to a signal from the blown film forming apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56176924A JPS5878725A (en) | 1981-11-04 | 1981-11-04 | Molding device for inflation film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56176924A JPS5878725A (en) | 1981-11-04 | 1981-11-04 | Molding device for inflation film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5878725A true JPS5878725A (en) | 1983-05-12 |
Family
ID=16022132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56176924A Pending JPS5878725A (en) | 1981-11-04 | 1981-11-04 | Molding device for inflation film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5878725A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61256212A (en) * | 1985-05-10 | 1986-11-13 | Seisan Nipponsha Kk | Automatic controller for inflation tube diameter |
| JPH01317743A (en) * | 1988-06-17 | 1989-12-22 | Chiyuugai Boeki Kk | Production of inflation film |
| JPH03106636A (en) * | 1989-09-20 | 1991-05-07 | Tomy Kikai Kogyo Kk | Resin molding apparatus |
| JPH03211035A (en) * | 1990-01-15 | 1991-09-13 | Shikoku Maruyasu Kk | Frost control device for blow molded product |
| JPH04135734A (en) * | 1990-09-27 | 1992-05-11 | Sekisui Chem Co Ltd | Apparatus for controlling frost line in inflation molding line |
| US5258148A (en) * | 1991-06-03 | 1993-11-02 | Windmoller & Holscher | Process for controlling the degree of orientation of tubular films |
| US5470216A (en) * | 1993-04-05 | 1995-11-28 | Nippon Petrochmicals Company, Limited | Film manufacturing apparatus with bubble controlling sensor |
| CN107209195A (en) * | 2015-02-25 | 2017-09-26 | 株式会社日立高新技术 | Automatic analysing apparatus |
| WO2020088876A1 (en) * | 2018-10-31 | 2020-05-07 | Windmöller & Hölscher Kg | Monitoring method and monitoring device for monitoring a film bubble in an exit region of a blown-film device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS515021A (en) * | 1974-07-01 | 1976-01-16 | Ricoh Kk | RENZOKUYOSHIOKURISOCHINO HITSUPARIROORASOCHI |
| JPS54139670A (en) * | 1978-04-17 | 1979-10-30 | Windmoeller & Hoelscher | Optimum adjustment of blow film extrusion output by use of process computer and apparatus therefor |
-
1981
- 1981-11-04 JP JP56176924A patent/JPS5878725A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS515021A (en) * | 1974-07-01 | 1976-01-16 | Ricoh Kk | RENZOKUYOSHIOKURISOCHINO HITSUPARIROORASOCHI |
| JPS54139670A (en) * | 1978-04-17 | 1979-10-30 | Windmoeller & Hoelscher | Optimum adjustment of blow film extrusion output by use of process computer and apparatus therefor |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61256212A (en) * | 1985-05-10 | 1986-11-13 | Seisan Nipponsha Kk | Automatic controller for inflation tube diameter |
| JPH01317743A (en) * | 1988-06-17 | 1989-12-22 | Chiyuugai Boeki Kk | Production of inflation film |
| JPH03106636A (en) * | 1989-09-20 | 1991-05-07 | Tomy Kikai Kogyo Kk | Resin molding apparatus |
| JPH0575574B2 (en) * | 1989-09-20 | 1993-10-20 | Tomi Kikai Kogyo Kk | |
| JPH03211035A (en) * | 1990-01-15 | 1991-09-13 | Shikoku Maruyasu Kk | Frost control device for blow molded product |
| JPH04135734A (en) * | 1990-09-27 | 1992-05-11 | Sekisui Chem Co Ltd | Apparatus for controlling frost line in inflation molding line |
| US5258148A (en) * | 1991-06-03 | 1993-11-02 | Windmoller & Holscher | Process for controlling the degree of orientation of tubular films |
| US5470216A (en) * | 1993-04-05 | 1995-11-28 | Nippon Petrochmicals Company, Limited | Film manufacturing apparatus with bubble controlling sensor |
| CN107209195A (en) * | 2015-02-25 | 2017-09-26 | 株式会社日立高新技术 | Automatic analysing apparatus |
| CN107209195B (en) * | 2015-02-25 | 2018-10-16 | 株式会社日立高新技术 | Automatic analysing apparatus |
| WO2020088876A1 (en) * | 2018-10-31 | 2020-05-07 | Windmöller & Hölscher Kg | Monitoring method and monitoring device for monitoring a film bubble in an exit region of a blown-film device |
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