JPS5941229A - Method for forming electroconductive two-tone tubular film - Google Patents
Method for forming electroconductive two-tone tubular filmInfo
- Publication number
- JPS5941229A JPS5941229A JP57153065A JP15306582A JPS5941229A JP S5941229 A JPS5941229 A JP S5941229A JP 57153065 A JP57153065 A JP 57153065A JP 15306582 A JP15306582 A JP 15306582A JP S5941229 A JPS5941229 A JP S5941229A
- Authority
- JP
- Japan
- Prior art keywords
- carbon
- resin
- cooling
- tubular film
- viscosity
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9115—Cooling of hollow articles
- B29C48/912—Cooling of hollow articles of tubular films
- B29C48/913—Cooling of hollow articles of tubular films externally
-
- 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
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
- B29C48/19—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their edges
-
- 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
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/17—Articles comprising two or more components, e.g. co-extruded layers the components having different colours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/06—PVC, i.e. polyvinylchloride
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2707/00—Use of elements other than metals for preformed parts, e.g. for inserts
- B29K2707/04—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0003—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular electrical or magnetic properties, e.g. piezoelectric
- B29K2995/0005—Conductive
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (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、導電性を有し然も内容物の確認し得る透明な
窓に相当する部分を有する導電性のある袋の原反即ち管
状フィルムの成形方法である。DETAILED DESCRIPTION OF THE INVENTION The present invention is a method for forming an original conductive bag, ie, a tubular film, which is conductive and has a portion corresponding to a transparent window through which the contents can be confirmed.
従来からある二色押出機又はそのシステムではほぼ同一
原料にして片側のみ着色するか、又は同一原料にして別
々の着色管状フィルムの成形が限度であった。Conventional two-color extruders or their systems are limited to forming substantially the same raw material and coloring only one side, or forming separate colored tubular films using the same raw material.
本発明はカーボンを30%(重量)以上含有する樹脂と
カーボンを含有しない樹脂又は同系の樹脂の様な粘度、
熱的特性、強度に大差のある2種の材料を同時に、はぼ
等しい厚みにして然も両材料の巾を望みの巾に自由にン
ワ更しうる押出成形の1T、去である。導電性を付与す
るためカーボンを30%(重量)以上も添加すれば各種
特性がカーボンを含有しない樹脂と変化して来る事は前
記したが、その内粘度特性は出来る限り等しい方が望ま
しいのだが、その粘度比率が(カーボン含有樹脂):(
カーボン含有しない樹脂)=30 : 1以内を限度と
する様なカーボンを含有しない即ち透明樹脂を選択する
事が必要である。The present invention has a viscosity such as that of a resin containing 30% (weight) or more of carbon and a resin that does not contain carbon or a resin of the same type.
This is 1T extrusion molding, which allows two materials with large differences in thermal properties and strength to be made at the same time to approximately the same thickness, and the widths of both materials can be freely changed to the desired width. As mentioned above, if more than 30% (by weight) of carbon is added to impart conductivity, various properties will change from those of a resin that does not contain carbon, but it is desirable that the viscosity properties be as similar as possible. , whose viscosity ratio is (carbon-containing resin): (
It is necessary to select a resin that does not contain carbon, that is, a transparent resin with a limit of 30: 1 or less (carbon-free resin).
次に従来からの二色押出機用金型では、金型内の樹脂流
路断面積が等しく同程度の粘度では成形が可能であるが
、粘度に差がある場合は目的とする厚み更には導電性部
分、透明部分の巾を自由に変更又は制御する事が困難で
ある。Next, with conventional molds for two-color extruders, molding is possible when the cross-sectional area of the resin flow path in the mold is equal and the viscosity is about the same, but when there is a difference in viscosity, the desired thickness and It is difficult to freely change or control the width of the conductive part and the transparent part.
従って第1図における金型の(1)のマンドレル形状を
、従来形状は第2図の様に(4)から入る樹脂と(5)
から入る樹脂との隔壁板(7)が中心からふり分けられ
ているものを、第3図の様に本発明ではその位置を中心
からずらしてふり分は不均等にし、第1図におけるダイ
ボディ(3)との間隙即ち流路断面積を不均等にし、流
路断面積の広い方(4)側は粘度の大きいカーボン含有
樹脂の流路とし、流路断面積の狭い方(5)側は粘度の
小さいカーボンを含有しない透明樹脂の流路とする。そ
の比率は1.5 : 1(3:2)が望ましい。流路の
狭い方から流れるカーボンを含有しない樹脂は隔壁板(
7)を通過後カーボンを含有する樹脂と一体となり粘度
が小さいが故に巾広く広がり隔壁板(7)で仕切られた
位置より広く吐出する。 従来方式のマンドレルでは粘
度の差によって吐出する管状フィルムの導電性部分が巾
狭く、透明部分巾広く出てしまい、これは導電性袋とし
ては導電性部分を巾広く、透明性部分を巾狭くしだいた
め、上記の様な方法をとる事によって解決出来た。Therefore, the mandrel shape (1) of the mold in Figure 1 is different from the conventional shape as shown in Figure 2, where the resin enters from (4) and (5).
In the present invention, as shown in Fig. 3, the partition wall plate (7) with the resin entering from the die body (7) is distributed from the center, but the position is shifted from the center to make the distribution uneven, as shown in Fig. 1. 3), the gap between them and the cross-sectional area of the flow path is made uneven, and the side with the larger cross-sectional area (4) is a flow path for carbon-containing resin with a higher viscosity, and the side with the narrower cross-sectional area (5) is the flow path of the carbon-containing resin. The channel is made of a transparent resin that does not contain carbon and has a low viscosity. The ratio is preferably 1.5:1 (3:2). The carbon-free resin flowing from the narrow side of the flow path is placed on the partition plate (
After passing through 7), it becomes one with the carbon-containing resin, and because of its low viscosity, it spreads widely and is discharged wider than the position partitioned by the partition plate (7). With conventional mandrels, the conductive part of the tubular film discharged is narrower and the transparent part is wider due to the difference in viscosity. Therefore, I was able to solve the problem by using the method described above.
金型から出るまではカーボン含有樹脂とカーボンを含有
しない樹脂との厚みと巾を変更、制御出来ても、出て来
た管状フィルムは冷却しないと引取る事が出来ないため
冷却装置を必要とするが、従来の空冷リングでは管状フ
ィルムに均一な空冷が作用する様になっている。Even if it is possible to change and control the thickness and width of the carbon-containing resin and the carbon-free resin until it comes out of the mold, the tubular film that comes out cannot be removed unless it is cooled, so a cooling device is required. However, in conventional air cooling rings, uniform air cooling acts on the tubular film.
しかし導電性2色管状フィルムの成形においては、カー
ボンを含有する導電性樹脂部はカーボンを含有しない樹
脂部との熱的特性に差が生じ、導電性部分は極めて速く
冷却するため管状フィルム内に圧入された気体圧力で冷
却の遅い、伸び易いカーボンを含有しない樹脂側がより
大きく膨張するためバブルの片プクレとなってしまう。However, when molding a conductive two-color tubular film, the conductive resin part containing carbon has different thermal characteristics from the resin part not containing carbon, and the conductive part cools extremely quickly, so Due to the pressure of the injected gas, the resin side that cools slowly and does not contain carbon, which is easy to stretch, expands more, resulting in one side of the bubble becoming bulged.
両材料のこの様な熱的特性の差と、カーボンが含有する
事によって含有しないものより伸び難くなる性質の差を
第4図及び第5図に示す様な管状フィルムの部分部分の
冷却度合を調整可能とする空冷リングを用いる事によっ
て片プクレしない均一なバブルとなシ安定した成形が可
能となった。This difference in thermal properties between the two materials, as well as the difference in the property that the carbon content makes them more difficult to stretch than those without carbon, can be explained by comparing the degree of cooling of a portion of the tubular film as shown in Figures 4 and 5. By using an adjustable air cooling ring, stable molding with uniform bubbles that do not bulge is possible.
第5図に示す遮蔽板(9)は空冷リングのノズル手前に
スライドしながら上下しうる8分割乃至12分割される
もので、調整ボルトα0)によって各々に上下調整出来
るものである。例えばカーボンを含有する樹脂部におい
ては調整ポル)QO)を締め付けにして遮蔽板を降ろし
風量を絞る事で冷却を弱められる。本発明は導電性袋の
2色管状フィルム原反の製法であるため、導電性袋はそ
の内容物によって要求される導電度合は種々変ってくる
。例えば半導体部品電子部品用袋であるなら導電性部分
を巾広く、透明部分狭く2色管状フィルム原反を成形し
なければならない。従来の2色押出成形機のみによる成
形でにどうしてもカーボン含有する樹脂即ち導電性部分
は極端に巾狭く吐出してしまうので目的果す袋の原反と
なり得ない。 樹脂の選択基準、及び金型の樹脂流路の
適正化、部分冷却調整可能な空冷リング等の対策を施す
ならば然る後は、押出機の成形条件(スクリー回転、温
度)によって導電性部分を透明部分より巾広い2色管状
フィルム原反を製造し得る。その導電性部分、透明性部
分の巾を成形条件によって任意に変更出来ることが特徴
である。The shielding plate (9) shown in FIG. 5 is divided into 8 to 12 parts that can be moved up and down while sliding in front of the nozzle of the air cooling ring, and can be adjusted up and down individually using adjustment bolts α0). For example, in a resin part containing carbon, cooling can be weakened by tightening the adjustment port (QO) and lowering the shield plate to reduce the air volume. Since the present invention is a method for manufacturing a two-color tubular film original fabric for a conductive bag, the degree of conductivity required for the conductive bag varies depending on its contents. For example, in the case of a bag for semiconductor and electronic components, a two-color tubular film must be formed with a wide conductive part and a narrow transparent part. When molded using only a conventional two-color extrusion molding machine, the carbon-containing resin, ie, the conductive portion, is inevitably ejected in an extremely narrow width, so that it cannot be used as the raw material for the bag that serves the purpose. After taking measures such as optimizing the resin selection criteria, optimizing the resin flow path in the mold, and installing an air cooling ring that can adjust partial cooling, the conductive portion can be adjusted depending on the molding conditions of the extruder (scree rotation, temperature). It is possible to produce a two-color tubular film material having a wider width than the transparent part. The feature is that the width of the conductive portion and the transparent portion can be arbitrarily changed depending on the molding conditions.
導電性袋は全てカーボン含有する不透明な袋又は、通常
熱可塑性樹脂等に金属箔を真空蒸着した透明な袋、又は
金属のコーティングされた多層フィルムの袋等様々ある
が、導電性、生産性、コスト、なかみを確認出来る透明
性、等満足されるものがなく、本発明では量産性に優れ
る2色押出機を用い、導電性の優れるカーボンを高濃度
添加した樹脂と中味を確認出来る透明樹脂との2色管状
フィルムを製造し、それを原反として使用用途に応じた
導電性袋を容易に製造出来る事を特徴とするものである
。There are various types of conductive bags, such as opaque bags that contain carbon, transparent bags that are usually vacuum-deposited with metal foil on thermoplastic resin, or multilayer film bags that are coated with metal. The cost and transparency that allows the contents to be confirmed are not satisfactory, so in the present invention, we use a two-color extruder that is excellent in mass production, and use a resin that has a high concentration of carbon added with excellent conductivity and a transparent resin that allows the contents to be confirmed. This method is characterized by the fact that a two-color tubular film is produced, and by using it as a raw material, conductive bags can be easily produced according to the purpose of use.
以下本発明の実施例を述べる。Examples of the present invention will be described below.
実施例 1
50φ2色双胴型押出機先端の環状金型(ダイ)より一
方はカーゼ150%を含む軟質ポリ塩化ビニル(可塑剤
Dop 40pHR)ともう一方の押出機はカーボン
を含有しない透明な軟質ポリ塩化ビニル(可塑剤Dop
29pHR)を同時に2色管状フィルム成形。カー
ボン含有ポリ塩化ビニル側成形条件C3〜C3165〜
185℃、モータ回転1800rpm、負荷電流11A
1透明塩化ビニル側成形条件01〜03160℃〜18
0℃、モータ回転1500rpm、負荷電流12A1導
電性部分dl175ms、透明部分中16FIIIJ表
面抵抗透明側1〜2 X i 011Ω、導電性側6〜
5.Xl(16Ω実施例 2
50φ2色双胴型押出機先端の環状金型(ダイ)より一
方はカーボン50%を含むポリエチレンMI−0,01
ともう一方の押出機はカーボンを含有しない透明なポリ
エチレン共重合体M I = l:1.5を同時に2電
管状フづルム成形、カーボン含有ポリエチレン側成形条
件C,〜C3165〜175°Cモーター回転1000
丁pm、負荷電流14A1透明側ポリエチレン共重合体
成形条件01〜C3160〜170℃、モーター回転1
1000rp、負荷電流12A1導電性部分巾1007
1111.透明部分中90mJ 表面抵抗透明側8X1
09Ω5、導電性側s x i o6ΩExample 1 From the annular mold (die) at the tip of a 50φ two-color twin-barrel extruder, one extruder was made of soft polyvinyl chloride (plasticizer Dop 40 pHR) containing 150% case, and the other extruder was made of transparent soft polyvinyl chloride containing no carbon. Polyvinyl chloride (plasticizer Dop)
29pHR) was simultaneously formed into a two-color tubular film. Carbon-containing polyvinyl chloride side molding conditions C3~C3165~
185℃, motor rotation 1800rpm, load current 11A
1 Transparent vinyl chloride side molding conditions 01~03160℃~18
0°C, motor rotation 1500 rpm, load current 12 A1 conductive part dl 175 ms, transparent part 16FIIIJ surface resistance transparent side 1~2 X i 011Ω, conductive side 6~
5. Xl (16Ω Example 2 50φ two-color twin-barrel type extruder, one side of the annular mold (die) at the tip of polyethylene MI-0,01 containing 50% carbon
The other extruder simultaneously molded a carbon-free transparent polyethylene copolymer M I = l: 1.5 into two tube-shaped foams, and the carbon-containing polyethylene side molded under conditions C, ~C3165~175°C motor. rotation 1000
pm, load current 14A1 transparent side polyethylene copolymer molding conditions 01~C3160~170℃, motor rotation 1
1000rp, load current 12A1 conductive part width 1007
1111. 90mJ in transparent part Surface resistance transparent side 8X1
09Ω5, conductive side s x i o6Ω
第1図は本発明の一実施態例の環状金型第2図は環状金
型内の従来マンドレル形状第3図は本発明で実施した新
しいマンドレル形状
第4図は本発明の一実施態例である空冷リングの平面図
オ 4−L!+
手続補正書
1、事件の表示
昭和57年特許願第153065号
2、発明の名称
導電性2色管状フィルムの成形法
&補正をする者
事件との関係 特許出願人FIG. 1 shows an annular mold according to an embodiment of the present invention. FIG. 2 shows a conventional mandrel shape in the annular mold. FIG. 3 shows a new mandrel shape implemented in the present invention. FIG. 4 shows an example of an embodiment of the present invention. A plan view of the air cooling ring that is 4-L! + Procedural amendment 1, Indication of the case 1982 Patent Application No. 153065 2, Name of the invention Method for forming conductive two-color tubular film & Person making the amendment Relationship with the case Patent applicant
Claims (1)
ビニル樹脂又はポリエチレン等の熱可塑性樹脂と、カー
ボンを含有しないこれらと同じか又は同系の熱可塑性樹
脂を2色管状フィルムに押出成形するには、両材料の粘
度を1:60以内を限度とし好ましくはほぼ同粘度にす
る事。 口 両材料の粘度が1:30以上ある場合又は成形条件
では好ましい比率で吐出しない場合は、金型(ダイ)の
各材料の流路断面積を1:1から3=2以内に入る比率
にする事。 ・ 金型から吐出する2色管状フィルム内に圧入した気
体圧力で膨張するバブルの冷却は、カーボン含有樹脂の
方は風量を少くし冷却を弱め、カーボン含有しない樹脂
の方は風量を多くし冷却を強める事の出来る、即ち空冷
リングの部分、部分によって風量調整が可能である事を
特徴とする空冷リング。 二 以上各請求範囲をみたす事によって、然る後置材質
の押出条件(例ればスクIJ、一回転、温度条件等)に
差をつける事によって、管状フィルムにおける導電性部
分即ちカーボンを含有する゛樹脂部分の割合を自由に可
変しうる事。[Scope of Claims] (a) A thermoplastic resin such as vinyl chloride resin or polyethylene containing high concentration carbon of 30% (weight) or more and a thermoplastic resin of the same or similar type that does not contain carbon in a two-color tubular shape. For extrusion molding into a film, the viscosity of both materials should be limited to within 1:60, preferably approximately the same viscosity. If the viscosity of both materials is 1:30 or more, or if the molding conditions do not allow the materials to be discharged at the desired ratio, adjust the cross-sectional area of each material in the mold to a ratio within 1:1 to 3=2. to be. - To cool the bubbles that expand with the pressure of the gas injected into the two-color tubular film that is discharged from the mold, the air volume is reduced to weaken the cooling for carbon-containing resins, and the cooling is increased by increasing the air volume for resins that do not contain carbon. An air cooling ring characterized by being able to increase the airflow, that is, by adjusting the air volume depending on the part of the air cooling ring. (2) By satisfying each of the above claims, by making a difference in the extrusion conditions of the corresponding post-material (for example, IJ, one rotation, temperature conditions, etc.), the conductive portion, that is, carbon, in the tubular film can be contained.゛The proportion of the resin part can be freely varied.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57153065A JPS5941229A (en) | 1982-09-02 | 1982-09-02 | Method for forming electroconductive two-tone tubular film |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57153065A JPS5941229A (en) | 1982-09-02 | 1982-09-02 | Method for forming electroconductive two-tone tubular film |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5941229A true JPS5941229A (en) | 1984-03-07 |
Family
ID=15554210
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57153065A Pending JPS5941229A (en) | 1982-09-02 | 1982-09-02 | Method for forming electroconductive two-tone tubular film |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5941229A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0595037A1 (en) * | 1992-10-28 | 1994-05-04 | Windmöller & Hölscher | Apparatus for centering a blown tubular film on a blown film extruder head |
-
1982
- 1982-09-02 JP JP57153065A patent/JPS5941229A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0595037A1 (en) * | 1992-10-28 | 1994-05-04 | Windmöller & Hölscher | Apparatus for centering a blown tubular film on a blown film extruder head |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR840001700B1 (en) | Method for cooling film bubble of low | |
US4047868A (en) | Multilayer parison extrusion molding machine for blow molding | |
US3857914A (en) | Method for extruding a foamed, molded article | |
US3400190A (en) | Method and apparatus for the extrusion of multi-layer film and sheet | |
US3321804A (en) | Extrusion of wide thermoplastic film and sheet | |
US3477099A (en) | Extrusion apparatus | |
US3645837A (en) | Laminates | |
US3440309A (en) | Production of expanded thermoplastic products | |
EP0076366B1 (en) | Multilayer tubular body with uncentered barrier layer | |
US3837773A (en) | Extruded plastic film method and apparatus for the manufacture thereof | |
US3327349A (en) | Extrusion adaptor | |
CN111331980A (en) | Low-melting-point film, preparation method and application thereof | |
US3824139A (en) | Plastics laminate | |
KR20060038983A (en) | Foamed thermoplastic resin sheet | |
US3619445A (en) | Method for producing biaxially oriented polystyrene heavy gauge sheet | |
EP0287246B1 (en) | Method of manufacturing polybutylene terephthalate resin films | |
JPS5941229A (en) | Method for forming electroconductive two-tone tubular film | |
US3608058A (en) | Method for manufacture of void-free and warp-free slab stock | |
US3275725A (en) | Method of making laminated tubing | |
EP0583619B1 (en) | Method and apparatus for molding inflation film | |
US3096146A (en) | Decoratively colored thermoplastic article and process for making the same | |
JPS5924633A (en) | Manufacture of ultra-high-molecular-weight polyethylene pipe and pipe molding die | |
EP0210108B1 (en) | Method for production of cylindrical thermoplastic resin film having rough inner surface and apparatus thereof | |
US3915616A (en) | Diverging mandrel extension for extrusion of foamed polymer | |
JPS61209135A (en) | Manufacture of ribbed thermoplastic resin film |