JPS63222837A - Stabilizing plate for water-cooled blow-down inflation - Google Patents
Stabilizing plate for water-cooled blow-down inflationInfo
- Publication number
- JPS63222837A JPS63222837A JP62056234A JP5623487A JPS63222837A JP S63222837 A JPS63222837 A JP S63222837A JP 62056234 A JP62056234 A JP 62056234A JP 5623487 A JP5623487 A JP 5623487A JP S63222837 A JPS63222837 A JP S63222837A
- Authority
- JP
- Japan
- Prior art keywords
- water
- tubular body
- cylindrical body
- ridge
- stabilizing plate
- 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
- 230000000087 stabilizing effect Effects 0.000 title abstract description 11
- 239000000498 cooling water Substances 0.000 claims abstract description 9
- 239000003381 stabilizer Substances 0.000 claims description 28
- 238000001816 cooling Methods 0.000 claims description 13
- 238000007664 blowing Methods 0.000 claims description 7
- 229920003002 synthetic resin Polymers 0.000 claims description 5
- 239000000057 synthetic resin Substances 0.000 claims description 5
- 229920001169 thermoplastic Polymers 0.000 claims description 5
- 239000004416 thermosoftening plastic Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 15
- 230000037303 wrinkles Effects 0.000 abstract description 9
- 239000000314 lubricant Substances 0.000 abstract description 3
- 238000005461 lubrication Methods 0.000 abstract description 2
- 231100000241 scar Toxicity 0.000 abstract 2
- 208000032544 Cicatrix Diseases 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000037387 scars Effects 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 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
- B29C48/03—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
- B29C48/03—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
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】
〔産業上の利用分野〕
本発明は水冷下吹インフレーション用安定板に関するも
のである。詳しくは下向きに熱可塑性合成樹脂筒状体を
押出し、その外面に冷却水を供給して行なう水冷下吹イ
ンフレーションを行なう際にフィルムに皺等を発生させ
ずに引取るための安定板に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a stabilizer for water-cooled downward blow inflation. Specifically, it relates to a stabilizing plate that allows the film to be removed without wrinkles when performing water-cooled downward blow inflation, which is performed by extruding a thermoplastic synthetic resin cylindrical body downward and supplying cooling water to its outer surface. be.
水冷下吹インフレーションによるフィルムの成形はフィ
ルムの急冷が可能なことから透明なフィルムを得ること
ができ、各種包装材料用のフィルム製造用に用いられて
いる。Forming a film by water-cooled downward blowing inflation allows the film to be rapidly cooled, making it possible to obtain a transparent film, and is used for manufacturing films for various packaging materials.
水冷下吹インフレーションは、上述のように冷却媒体と
して水を用いて急冷を可能としているため、通常の空冷
方式による方法とは異なる問題点が生起している。As mentioned above, the water-cooled downward blowing inflation enables rapid cooling using water as a cooling medium, and therefore has different problems than the normal air cooling method.
その問題点の７つは、インフレーション成形は得られる
成形品の形状が筒状のフィルムであるため、成形後、該
筒状体を偏平に折りたたみ、巻き取らなければならず、
この偏平に折りたたむ際、下吹水冷方式のインフレーシ
ョン成形の場合、偏平化を行なうピンチロールの手前に
通常設けられている安定板と筒状フィルムとの間には冷
却用の水が入シ込むこととなる。The seventh problem is that the molded product obtained by inflation molding is a cylindrical film, so after molding, the cylindrical body must be folded flat and rolled up.
When folded flat, in the case of bottom-blown water-cooled inflation molding, cooling water can enter between the stabilizer plate and the cylindrical film, which are usually installed in front of the pinch rolls that flatten the film. becomes.
この安定板と筒状フィルムとの間に入り込む水は均一な
膜状となっていれば比較的問題はないが、フィルム表面
は通常撥水性であることから安定板と筒状フィルムの間
には水が塊状、滴状で入り込んでくることとなり、この
ためフィルムに皺が発生すると云う問題があった。There is relatively no problem with water entering between the stabilizer and the cylindrical film as long as it forms a uniform film, but since the surface of the film is usually water-repellent, there is no problem between the stabilizer and the cylindrical film. Water enters in the form of lumps or drops, which causes the problem that wrinkles occur in the film.
本発明者等は、上述のような問題点を解決するべく鋭意
検討を行なった結果、水冷下吹インフレーションにおい
て、ピンチロールの手前に設けられる安定板を特殊の構
造とすることによシ、冷却水とフィルムとの間に入シ込
む氷塊が原因で発生する皺の発生を防止し得ることを見
出し、本発明を完成するに至った。The inventors of the present invention have conducted intensive studies to solve the above-mentioned problems, and have found that, in water-cooled downward blowing inflation, a stabilizer plate provided in front of the pinch rolls has a special structure to improve cooling efficiency. The present inventors have discovered that it is possible to prevent wrinkles caused by ice blocks that enter between water and the film, and have completed the present invention.
すなわち、本発明の要旨は、熱可塑性合成樹脂を溶融状
態とし、下向きに筒状で押出し、該筒状体の内部に空気
を封入して膨張させつつその外面に冷却水を供給して冷
却する水冷下吹インフレーションに用いる安定板であっ
て、前記筒状体に接する表面が、筒状体の進行方向と交
叉する方向に連続する軟状突出部を複数段設けた構造と
されていることを特徴とする水冷下吹インフレーション
用安定板に存する。That is, the gist of the present invention is to melt a thermoplastic synthetic resin, extrude it downward in a cylindrical shape, and enclose air inside the cylindrical body to expand it, while supplying cooling water to the outer surface of the cylindrical body to cool it. It is a stabilizer plate used for water-cooled downward blow inflation, and the surface in contact with the cylindrical body has a structure in which a plurality of stages of soft protrusions are provided that are continuous in a direction intersecting the direction of movement of the cylindrical body. The feature lies in the stabilizer plate for water-cooled downward blowing inflation.
以下本発明の安定板の一例につき図面を用いて説明する
。An example of the stabilizer of the present invention will be described below with reference to the drawings.
第１図は本願発明の安定板の使用状態の概要を示す側面
図、第２図ｉａ）〜Ｔｄ）は本発明の安定板の一例を示
す斜視図である。FIG. 1 is a side view showing an overview of the usage state of the stabilizer plate of the present invention, and FIGS. 2a) to Td) are perspective views showing an example of the stabilizer plate of the present invention.
図中／はグイ、コは筒状体、３は冷却装置、９は安定板
、ｊは軟状突出部、乙はピンチロールをそれぞれ示す。In the figure, / indicates a stick, C indicates a cylindrical body, 3 indicates a cooling device, 9 indicates a stabilizing plate, j indicates a soft protrusion, and O indicates a pinch roll.
第１図に示すように熱可塑性合成樹脂は押出機（図示せ
ず）によシ溶融混練されダイ／から筒状体２として下方
に向って押出される。As shown in FIG. 1, a thermoplastic synthetic resin is melt-kneaded by an extruder (not shown) and extruded downward as a cylindrical body 2 through a die.
押出された筒状体コはその内部に空気が吹込まれる等し
て所定の径とされ冷却装置３に導びかれる。冷却装置３
は筒状フィルム２を囲繞するように冷却水を貯溜し、そ
の表面に冷却水を接触させるような構造とされており、
筒状体コの外表面から冷却を行なうものである。冷却装
置３内の水は筒状体コの進行に伴い減少するので、冷却
水を供給する装置（図示せず）が接続されている。The extruded cylindrical body is made into a predetermined diameter by, for example, blowing air into the inside thereof, and is led to the cooling device 3. Cooling device 3
has a structure in which cooling water is stored so as to surround the cylindrical film 2, and the cooling water is brought into contact with the surface of the cylindrical film 2.
Cooling is performed from the outer surface of the cylindrical body. Since the water in the cooling device 3 decreases as the cylindrical body advances, a device (not shown) for supplying cooling water is connected.
勿論、上述のような構造の冷却装置に限られず、例えば
スプレー装置のような冷却装置としてもよい。Of course, the cooling device is not limited to the structure described above, and may be a cooling device such as a spray device, for example.
冷却装置３を通過した筒状体コは更に下方に送られ、筒
状体の進行方向両側に設けられた安定板に接触し、順次
偏平化され、ピンチロール６でピンチされて巻き取られ
る。The cylindrical body that has passed through the cooling device 3 is sent further downward, contacts stabilizing plates provided on both sides of the cylindrical body in the traveling direction, is sequentially flattened, and is pinched by pinch rolls 6 and wound up.
この安定板による偏平化に際し、安定板の表面が平らで
ある場合、氷塊ができ、前述したように皺の発生の原因
となる。During flattening by the stabilizer, if the surface of the stabilizer is flat, ice blocks will form, causing wrinkles as described above.
本発明においてはこの安定板を特殊の構造としである。In the present invention, this stabilizer plate has a special structure.
すなわち、安定板グの筒状体認に接する表面を、筒状体
の進行方向と交叉する方向に連続する軟状突出部！を複
数段設けた構造としである。In other words, the surface in contact with the cylindrical body of the stabilizing plate is a soft protrusion that continues in a direction intersecting the direction of movement of the cylindrical body! It has a structure with multiple stages.
このような構造とすることにより筒状体コの皺の発生が
防止される。Such a structure prevents wrinkles from forming in the cylindrical body.
その作用を説明すれば筒状体２０表面に付着して安定板
Ｚに達した冷却水は安定板Ｚに設けられた畝状突出部夕
によって筒状体コの表面から掻き取られるような状態と
なシ、氷塊の発生が防止される。To explain its action, the cooling water that has adhered to the surface of the cylindrical body 20 and reached the stabilizer Z is scraped off from the surface of the cylindrical body by the ridge-like protrusions provided on the stabilizer Z. This prevents the formation of ice blocks.
しかしながら、筒状体コの表面に付着している水は潤滑
剤として作用しており、完全に除いてしまうと安定板と
の摩擦によシ傷が発生したシする原因となる。However, the water adhering to the surface of the cylindrical body acts as a lubricant, and if it is completely removed, it will cause scratches due to friction with the stabilizer plate.
本発明の軟状突出部！によシ掻き取られた水は、畝状突
出部！同志の間の凹部を伝って側方にのがれるが、完全
に側方に排出されるものではなく畝を乗り越えるように
して流下していくものである。Soft protrusion of the present invention! The water that has been scraped off forms ridge-like protrusions! It escapes to the side through the concavity between the comrades, but it is not completely discharged to the side, but flows down by climbing over the ridges.
従って軟状突出部！の頂部は常時水によって濡れた状態
とカリ潤滑不足によシ傷が発生するようなことはない。Hence the soft protrusion! The top of the cap is always wet with water and there is no possibility of scratches due to lack of potash lubrication.
このような作用によシ、氷塊が安定板りと筒状体２の間
に挾まって発生する皺は防止され、しかも筒状体コの表
面に付着した水の潤滑剤としての作用はそのまま享受で
きることとなる。Due to this action, wrinkles that occur when ice blocks are caught between the stabilizing plate and the cylindrical body 2 are prevented, and the water attached to the surface of the cylindrical body 2 continues to act as a lubricant. You will be able to enjoy it.
第２図（ａ）〜（ｄ）に示すように本発明の安定板は種
々の態様が考えられる。As shown in FIGS. 2(a) to 2(d), the stabilizer plate of the present invention may have various embodiments.
第一図（ＦＬ）は平行な畝を設けたもの、第２図Ｔｂ）
は安定板の中央部から両側に向って若干下向きに傾斜し
た畝を設けたものであシ水を安定板の側方に向ってより
多く流れるようにしたものである。第２図（Ｃ）は半円
形断面を有する畝を並設したものである。第一図（ｄ）
は三角形断面を有する畝を並設したものである。Figure 1 (FL) has parallel ridges, Figure 2 Tb)
The stabilizer is provided with ridges that slope slightly downward from the center of the stabilizer to both sides, allowing more water to flow toward the sides of the stabilizer. FIG. 2(C) shows ridges having semicircular cross sections arranged side by side. Figure 1 (d)
is a row of ridges with a triangular cross section.
軟状突出部！の高さ、ピッチ等は得ようとする筒状体コ
の径や材質により異なり一概に決定できないが、７０副
程度の直径を有する筒状体コを製造する場合を例に取れ
ば、高さは／Ｗ〜／ｊｍ程度、ピッチは／Ｑ本／１０備
程度である。また軟状突出部夕の先端部はθ、ｔ〜／θ
四程度のアールとされているのが良い。Soft protrusion! The height, pitch, etc. of the cylindrical body vary depending on the diameter and material of the cylindrical body to be obtained, and cannot be determined unconditionally, but if we take the case of manufacturing a cylindrical body with a diameter of about 70 mm as an example, the height is about /W~/jm, and the pitch is about /Q lines/10 lines. Also, the tip of the soft protrusion is θ, t~/θ
It is good to have a radius of about 4.
軟状突出部！を形成する材質としてはある程度の強度を
有するものであれば任意の材質が選択可能であり、例え
ばステンレス等の金属、熱可塑性・熱硬化性合成樹脂、
木材、表面布貼りの金属や木材等が考えられる。Soft protrusion! Any material can be selected as long as it has a certain degree of strength, such as metals such as stainless steel, thermoplastic/thermosetting synthetic resins,
Possible materials include wood, metal with a cloth surface, and wood.
本発明の安定板によれば、水冷下吹インフレーションに
おいて、筒状体の皺の発生を良好に防止することが可能
になシ、安定した高速成形も可能となる。According to the stabilizer plate of the present invention, it is possible to satisfactorily prevent the occurrence of wrinkles in the cylindrical body during water-cooled downward blow inflation, and stable high-speed molding is also possible.
第１図は本願発明の安定板の使用状態の概要を示す側面
図、第２図（ａ）〜（ｄ）は本発明の安定板の一例を示
す斜視図である。
図中／はダイ、コは筒状体、３は冷却装置、ダは安定板
、！は軟状突出部、ｇはピンチロールをそれぞれ示す。
亮 ｌ 図
第２園
（ｃ）FIG. 1 is a side view showing an outline of the usage state of the stabilizer plate of the present invention, and FIGS. 2(a) to 2(d) are perspective views showing an example of the stabilizer plate of the present invention. In the figure / is the die, C is the cylindrical body, 3 is the cooling device, Da is the stabilizer, ! indicates a soft protrusion, and g indicates a pinch roll. Ryo l Figure 2nd garden (c)
Claims (3)
で押出し、該筒状体の内部に空気を封入して膨張させつ
つその外面に冷却水を供給して冷却する水冷下吹インフ
レーションに用いる安定板であって、前記筒状体に接す
る表面が、筒状体の進行方向と交叉する方向に連続する
畝状突出部を複数段設けた構造とされていることを特徴
とする水冷下吹インフレーション用安定板。(1) Water-cooled downward blowing inflation in which a thermoplastic synthetic resin is molten and extruded downward in a cylindrical shape, and air is sealed inside the cylindrical body to expand it while supplying cooling water to the outer surface of the cylindrical body for cooling. A water-cooled stabilizer plate for use, characterized in that the surface in contact with the cylindrical body has a structure in which a plurality of ridge-like protrusions are provided that are continuous in a direction intersecting the traveling direction of the cylindrical body. Stabilizer for blowing inflation.
ｍｍのアールを形成したことを特徴とする特許請求の範
囲第１項に記載の安定板。(2) 0.5 to 10 on the part of the ridge-like protrusion in contact with the cylindrical body
The stabilizer plate according to claim 1, characterized in that a radius of mm is formed.
徴とする特許請求の範囲第１項又は第２項に記載の安定
板。(3) The stabilizer plate according to claim 1 or 2, wherein the height of the ridge-like protrusion is 1 to 15 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62056234A JPH0757526B2 (en) | 1987-03-11 | 1987-03-11 | Stabilizer for water-cooled blast inflation inflation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62056234A JPH0757526B2 (en) | 1987-03-11 | 1987-03-11 | Stabilizer for water-cooled blast inflation inflation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63222837A true JPS63222837A (en) | 1988-09-16 |
| JPH0757526B2 JPH0757526B2 (en) | 1995-06-21 |
Family
ID=13021411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62056234A Expired - Fee Related JPH0757526B2 (en) | 1987-03-11 | 1987-03-11 | Stabilizer for water-cooled blast inflation inflation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0757526B2 (en) |
-
1987
- 1987-03-11 JP JP62056234A patent/JPH0757526B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0757526B2 (en) | 1995-06-21 |
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