JPH0366142B2 - - Google Patents
Info
- Publication number
- JPH0366142B2 JPH0366142B2 JP61166366A JP16636686A JPH0366142B2 JP H0366142 B2 JPH0366142 B2 JP H0366142B2 JP 61166366 A JP61166366 A JP 61166366A JP 16636686 A JP16636686 A JP 16636686A JP H0366142 B2 JPH0366142 B2 JP H0366142B2
- Authority
- JP
- Japan
- Prior art keywords
- ring
- bubble
- die
- spindle
- air
- 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.)
- Expired - Lifetime
Links
- 239000003381 stabilizer Substances 0.000 claims description 12
- 238000001816 cooling Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
- B29C48/901—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies
- B29C48/902—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies internally
-
- 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
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
- B29C48/901—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はインフレーシヨンフイルム成形機のバ
ブル安定体に関し、詳しくは押出量の限定を高め
インフレーシヨンフイルム成形量（生産量）を向
上させる工夫を施したインフレーシヨンフイルム
成形機のバブル安定体に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a bubble stabilizer for a blown film forming machine, and more specifically, it increases the limit of the extrusion rate and improves the blown film forming rate (production rate). This invention relates to a bubble stabilizer for a blown film forming machine that has been devised.
従来、この種のインフレーシヨンフイルム成形
機に於て、第４図に示すようにダイスから押出さ
れた溶融樹脂をエアリングからの冷風により冷却
して溶融管状体を形成し、当該溶融管状体を筒状
のバブル安定体に接触させ筒状バブル安定体の先
端より空気を入れてバブルをふくらませる形式の
ものは特公昭55−2180号公報に開示されていて公
知であつた。
Conventionally, in this type of inflation film molding machine, as shown in Fig. 4, molten resin extruded from a die is cooled by cold air from an air ring to form a molten tubular body. A known method was disclosed in Japanese Patent Publication No. 55-2180, in which the bubble is inflated by bringing the bubble into contact with a cylindrical bubble stabilizer and introducing air from the tip of the cylindrical bubble stabilizer.
上記した従来のものはダイスから押出された溶
融樹脂をエアリングからの冷風により冷却して溶
融管状体を大量に押出するようにしていた。しか
し、このようにエアリングによる冷却だけの場合
には押出量にも限度がある。
In the conventional method described above, the molten resin extruded from the die is cooled by cold air from an air ring to extrude a large amount of molten tubular body. However, in the case of cooling only by an air ring, there is a limit to the amount of extrusion.
本発明はダイスに一端が固定された支軸と、支
軸に上下配置で固定された小輪および大輪と、小
輪の外周縁と大輪の外周縁との間に所定の間隔を
おいて緊張状態に張架された多数本の線条体を備
えたことを特徴とするインフレーシヨンフイルム
成形機のバルブ安定体を提供しこれを利用して上
記の押し出量の限度を高めインフレーシヨンフイ
ルム形量（生産量）を向上させようとするもので
ある即ちバルブをふくらませるための空気をダイ
スから吹き入れて溶融管状体の中を通過させるこ
とにより同溶融管状体の中の高温化を可及的に抑
止し仍つてエアリングの吹出口からの冷却風によ
る外からの冷却効果を内側から幇助して向上させ
生産量を揚げるようにするものである。
The present invention provides a spindle having one end fixed to a die, a small ring and a large ring fixed to the spindle in a vertical arrangement, and tension with a predetermined interval between the outer periphery of the small ring and the outer periphery of the large ring. Provided is a valve stabilizer for an inflation film forming machine, which is characterized by having a large number of filament bodies stretched in tension, and utilizes the valve stabilizer to increase the above-mentioned extrusion amount limit. The aim is to improve the film shape (production amount).In other words, by blowing air to inflate the valve through a die and passing it through the molten tubular body, the temperature inside the molten tubular body can be raised. This is to improve production by assisting and abetting the cooling effect from the outside by the cooling air from the air ring outlet.
以下、本発明の実施例を図面に依拠して説明す
るに、
先ず、軸孔１のまわりにボス２を備えた大輪３
と軸孔４のまわりにボス５を備えた小輪６とを一
本の支軸７に回転可能および摺動可能に取付け、
これ等大輪３、小輪６の外周縁間に多数本の長尺
コイルバネ製線条体８を所定間隔で全周に張設す
ると共に大輪３と小輪６との距離および捻れ角を
調節してボス２，５を支軸７にビス９，９で回転
不能および摺動不能に固定することによつて、各
線条体８を円周方向に僅かに傾斜させたバブル安
定体１１を構成し、このバブル安定体１０をダイ
ス１１の中心に大輪３が同ダイス１１より遠くな
る向きとして垂設する。
Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, a large wheel 3 having a boss 2 around a shaft hole 1 will be described.
and a small wheel 6 having a boss 5 around the shaft hole 4 are rotatably and slidably attached to one support shaft 7,
A large number of long coil spring filaments 8 are stretched around the entire circumference between the outer peripheries of these large wheels 3 and small wheels 6 at predetermined intervals, and the distance and twist angle between the large wheels 3 and small wheels 6 are adjusted. By fixing the bosses 2 and 5 to the support shaft 7 with screws 9 and 9 in a non-rotatable and non-slidable manner, a bubble stabilizer 11 is constructed in which each filament 8 is slightly inclined in the circumferential direction. This bubble stabilizer 10 is vertically installed at the center of a die 11 with the large ring 3 facing away from the die 11.
次いで、ダイス１１よりポリオレフイン系樹脂
の溶融管状体１３を押し出して同溶融管状体１３
の下単をピンチロール（図示せず）にはさむと共
に当該溶融管状体１３の中に空気を吹出口１１′
より送り込んで所定のサイズまでふくらませつつ
連続的にピンチロール通過後のフイルムを巻き取
る手段をなすことによつてインフレーシヨンフイ
ルムの成形を行うようにしたものである。 Next, the molten tubular body 13 of polyolefin resin is extruded from the die 11.
While sandwiching the lower part of the body between pinch rolls (not shown), air is introduced into the melting tubular body 13 through the blow-off port 11'.
The inflation film is formed by feeding the film further to inflate it to a predetermined size and continuously winding up the film after passing through pinch rolls.
つまり、上記の実施例はインフレーシヨンフイ
ルムの成形に際してバブル１４に於ける漏斗状拡
大部１５に移行する寸前個所１６の内面をバブル
安定体１０の線条体８にソフト状態に接触させる
ことによつて上記の寸前個所１６に至つた溶融状
態の線状高分子樹脂の特に内面部分を斜め方向に
スライドさせて捏ね、捏りによつて線状骨分子の
横方向の配向および縦方向の配向をよりバランス
良くすると共に同斜め方向スライドによつて厚く
なつている部分を薄くなつている部分を等厚に均
らした状態としつつ拡大部１５に移行させて横方
向および縦方向に延伸するようにし、更に図面に
示す通り吹出口１１′より送り込まれる空気が線
条体８同士間を経てバブル１４の拡大部１５に流
入する際に溶融管状体１３の高温化抑止し仍つて
エアリング１７の冷却効果を内側から幇助するよ
うにしたものである。
That is, in the above embodiment, the inner surface of the portion 16 of the bubble 14 just before transitioning to the funnel-shaped enlarged portion 15 is brought into soft contact with the filament 8 of the bubble stabilizer 10 when forming the blown film. Therefore, the molten linear polymer resin, which has reached the above-mentioned point 16, is slid diagonally and kneaded, and by kneading, the linear bone molecules are aligned in the horizontal direction and in the longitudinal direction. In addition, by the same diagonal slide, the thicker part and the thinner part are evened out to have the same thickness, and are transferred to the enlarged part 15 and stretched in the horizontal and vertical directions. Furthermore, as shown in the drawing, when the air sent from the outlet 11' flows into the enlarged part 15 of the bubble 14 through the space between the filamentary bodies 8, the temperature of the melting tubular body 13 is suppressed, and the temperature of the air ring 17 is increased. The cooling effect is assisted from the inside.
本発明はダイスに一端が固定された支軸と、支
軸に上下配置で固定された小輪および大輪と、小
輪の外周縁と大輪の外周縁との間に所定の間隔を
おいて緊張状態に張設された多数本の線条体を備
えたことを特徴とするので上記したように溶融管
状体の押出量の限度を高め単位時間あたりの成形
量（生産量）を揚げるものであつて所期の目的を
完全に達成することができる優れた効果を奏する
ものである。
The present invention provides a spindle having one end fixed to a die, a small ring and a large ring fixed to the spindle in a vertical arrangement, and tension with a predetermined interval between the outer periphery of the small ring and the outer periphery of the large ring. Since it is characterized by having a large number of filamentary bodies stretched in a state of tension, as mentioned above, it increases the limit of the extrusion amount of the molten tubular body and increases the molding amount (production amount) per unit time. It has an excellent effect of completely achieving the intended purpose.
図は本発明インフレーシヨンフイルム成形機の
バブル安定体の実施例を示すものであつて、第１
図は要部の断面図、第２図は第１図Ａ−Ａ線に沿
う断面図、第３図は第１図Ｂ−Ｂ線とB′−B′線
に挾まれた個所の展開図、第４図は従来のものを
示す要部の断面図である。
１……軸孔、２……ボス、３……大輪、４……
軸孔、５……ボス、６……小輪、７……支軸、８
……線条体、９，９′……ビス、１０……バブル
安定体、１１……ダイス、１３……溶融管状体、
１４……バブル、１５……漏斗状拡大部、１６…
…寸前個所、１７……冷却エアリング。
The figure shows an embodiment of the bubble stabilizer of the blown film forming machine of the present invention.
The figure is a cross-sectional view of the main part, Figure 2 is a cross-sectional view taken along line A-A in Figure 1, and Figure 3 is a developed view of the part between line B-B and line B'-B' in Figure 1. , FIG. 4 is a sectional view of the main parts of the conventional device. 1...Shaft hole, 2...Boss, 3...Large ring, 4...
Shaft hole, 5...Boss, 6...Small wheel, 7...Spindle, 8
...striate body, 9,9'...screw, 10...bubble stabilizer, 11...dice, 13...molten tubular body,
14... Bubble, 15... Funnel-shaped expansion part, 16...
...On the verge of this, 17...Cooling air ring.
Claims (1)
下配置で固定された小輪および大輪と、小輪の外
周縁と大輪の外周縁との間に所定の間隔をおいて
緊張状態に張設された多数本の線条体を備えたこ
とを特徴とするインフレーシヨンフイルム成形機
のバブル安定体。1 A spindle with one end fixed to the die, a small ring and a large ring fixed to the spindle in a vertical arrangement, and a predetermined interval between the outer periphery of the small ring and the outer periphery of the large ring in a tension state. A bubble stabilizer for an inflation film forming machine, characterized by comprising a plurality of stretched filaments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61166366A JPS6237127A (en) | 1986-07-15 | 1986-07-15 | Molding machine for inflation film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61166366A JPS6237127A (en) | 1986-07-15 | 1986-07-15 | Molding machine for inflation film |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60176765A Division JPS6237125A (en) | 1985-08-10 | 1985-08-10 | Molding method of inflation film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6237127A JPS6237127A (en) | 1987-02-18 |
| JPH0366142B2 true JPH0366142B2 (en) | 1991-10-16 |
Family
ID=15830067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61166366A Granted JPS6237127A (en) | 1986-07-15 | 1986-07-15 | Molding machine for inflation film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6237127A (en) |
-
1986
- 1986-07-15 JP JP61166366A patent/JPS6237127A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6237127A (en) | 1987-02-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| RD02 | Notification of acceptance of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: R3D02 |
|
| EXPY | Cancellation because of completion of term |