JPS5812743A - Die for extrusion molding of synthetic resin - Google Patents
Die for extrusion molding of synthetic resinInfo
- Publication number
- JPS5812743A JPS5812743A JP56111764A JP11176481A JPS5812743A JP S5812743 A JPS5812743 A JP S5812743A JP 56111764 A JP56111764 A JP 56111764A JP 11176481 A JP11176481 A JP 11176481A JP S5812743 A JPS5812743 A JP S5812743A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- die
- lip
- extrusion molding
- lip portion
- 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
- B29C48/30—Extrusion nozzles or dies
- B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
- B29C48/307—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets specially adapted for bringing together components, e.g. melts within the die
-
- 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
- B29C48/27—Cleaning; Purging; Avoiding contamination
- B29C48/272—Cleaning; Purging; Avoiding contamination of dies
-
- 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
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
Abstract
Description
【発明の詳細な説明】
本発明は合成樹脂押出成形用ダイスに関するさらに詳し
くはダイスのリップ部に通称目ヤニと呼ばれている樹脂
片や顔料、充填剤、添加剤、発泡剤残査等の耐着堆積現
象を防止した合成樹脂押出成形用ダイスに関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a die for extrusion molding of synthetic resins, and more specifically, the lip part of the die is resistant to resin particles, pigments, fillers, additives, foaming agent residues, etc. This invention relates to a synthetic resin extrusion molding die that prevents the phenomenon of deposition.
従来、顔料、充填剤、添加剤、発泡剤等を含有した熱可
塑性樹脂を押出機等で溶融可塑化させ、押出成形用ダイ
スより押出して各種形状の押出物を得る際、リップ部に
目ヤニと呼ばわる上２含有物や上記含有物を含む樹脂の
耐着堆積が起り長時間の連続運転を行なうと、その耐着
堆積物が山状に盛り上ってリップよ靜稀出物の表面に接
触し、押出物の表面状態に悪くしたり、あった。Conventionally, when thermoplastic resin containing pigments, fillers, additives, blowing agents, etc. is melted and plasticized using an extruder, etc., and then extruded from an extrusion die to obtain extrudates of various shapes, eye stains may appear on the lip. When continuous operation is performed for a long period of time, the adhesion-resistant deposits of the upper 2 inclusions and the resin containing the above-mentioned substances swell up in a mountain shape and form on the surface of the lip. The surface condition of the extrudate may be deteriorated by contact.
特にパイプ押出成形やチューブラ−フィルム押出成形で
は上記耐着堆積物の耐着による穴あきが発生すると内部
の空気が抜けて押出成形品の口径が小さくなり、著しい
場合には押出成形が不可能になることもあった。Particularly in pipe extrusion molding and tubular film extrusion molding, if holes occur due to the adhesion of the above-mentioned adhesion-resistant deposits, the internal air will escape and the diameter of the extruded product will become smaller, and in severe cases, extrusion molding will become impossible. Sometimes it happened.
この押出成形用ダイスのリップ部における目ヤニの発生
は発泡剤を含む樹脂による発泡品の押出成形と顔料や充
填剤、添加剤等を含む樹脂の押出成形とでは若干差異が
Ｊ）す、前者は無数の微細な気泡を含む溶融樹脂がリッ
プより大気圧下に押出され、急激に膨張する際ダイスの
ランドやリップの壁面で擦らｌて気泡膜が破れ樹脂片が
リップ部に附着するものと考えられており一後者は溶融
樹脂中に含まれている顔料や充填剤、添加剤等がダイス
を通過する際剪断によリランドの壁面側に抽出されリッ
プ部に附着するものと考えらねている。There is a slight difference in the occurrence of eye stain on the lip of the extrusion molding die between the extrusion molding of a foamed product using a resin containing a foaming agent and the extrusion molding of a resin containing pigments, fillers, additives, etc. In this case, molten resin containing countless minute bubbles is extruded from the lip under atmospheric pressure, and when it expands rapidly, it rubs against the land of the die and the wall of the lip, causing the bubble film to break and pieces of resin to adhere to the lip. The latter is thought to be caused by pigments, fillers, additives, etc. contained in the molten resin being sheared when passing through the die and being extracted to the wall of the reland and attached to the lip. There is.
Ｊ
また、こｔｌら耐着堆積形態へ天ダイスのリップ部の形
状、材質、表面状態、温度ならびに熱可塑性樹脂および
含有物の種類が影響していることが知られている。It is also known that the shape, material, surface condition, temperature, and type of thermoplastic resin and inclusions of the lip of the top die have an influence on the adhesion-resistant deposition form.
このため、すでにダイスのリップ部に樹脂や顔料、充填
剤、添加剤、発泡剤残音等が耐着堆積才ろのを防止する
方法として例えば特公昭４５−８６４８７号に示さｌる
ようなダイスのリップ部に空気を吹き付ける方法、特公
昭４９−２００６２号に示されるようなダイスのリップ
部形状を鋭角にする方法等が提案さｌ］でおり、また一
般的にはダイスのリップ部にシリコンオイル等の離型剤
を塗布する方法等が採用さねている。For this reason, as a method for preventing resins, pigments, fillers, additives, foaming agent residuals, etc. from accumulating on the lip of the die, for example, a die as shown in Japanese Patent Publication No. 45-86487 has been proposed. A method of blowing air onto the lip of the die, and a method of making the lip of the die at an acute angle as shown in Japanese Patent Publication No. 49-20062 have been proposed. Methods such as applying a mold release agent such as oil have been adopted.
しかしながら特公昭４５−８６４８７号ではリップ部附
近の構造が複雑で、特にパイプ用ダイヤチューブラ−フ
ィルム用ダイにおける内面リップへの空気吹付けは特殊
なコントロール装置を装備しないと押出成形品の口径が
大きくなるという問題点があり、特公昭４９−２００６
２号の方法ではリップ先端が鋭角のため機械的強度が弱
く、変形や損傷を起し易い欠点があった。However, in Japanese Patent Publication No. 45-86487, the structure around the lip part is complicated, and the diameter of the extruded product is large unless a special control device is installed to blow air to the inner lip of the pipe diamond tubular film die. There is a problem that
Method No. 2 had the drawback that the tip of the lip was at an acute angle, so the mechanical strength was weak and it was easily deformed and damaged.
またシリコンオイル等の離型剤の塗布は耐着堆積防止効
果の寿命が短かく押出成形品の表面に該離型剤が附着す
るため、押出成形品のヒートシール性や印刷性等の二次
加工性を損ねるという欠点があった。In addition, application of a mold release agent such as silicone oil has a short lifespan of anti-adhesive buildup prevention effect, and the mold release agent adheres to the surface of the extruded product, resulting in secondary problems such as heat sealability and printability of the extruded product. This had the disadvantage of impairing workability.
そこで本発明者等は上記欠点を除去し、かつダイスのリ
ップ部に樹脂や顔料、充填剤、添加剤、発泡剤残音等の
耐着堆積を防止する方法はないものかと鋭意研究を行な
った結果ダイスのリップ部に耐熱性を有する熱可塑性芳
香族重合体およびフッ素系樹脂等の混合組成物からなる
非粘着性、低摩擦係数、耐熱性の塗膜を被覆せしめろこ
とにより、上記欠点が解決さｆ］、かつリップ部の耐着
堆積も防止できることを見い出 ゛したのである。Therefore, the present inventors conducted intensive research to find a method to eliminate the above-mentioned drawbacks and prevent the build-up of resins, pigments, fillers, additives, foaming agent residue, etc. on the lip of the die. As a result, by coating the lip of the die with a non-adhesive, low-friction, heat-resistant coating film made of a mixed composition of heat-resistant thermoplastic aromatic polymer and fluororesin, the above-mentioned drawbacks can be overcome. They have discovered that it is possible to solve the problem [f] and prevent adhesion buildup on the lip portion.
すなわち本発明は溶融体が押出さＪするリップ部に、少
なくとも１８０℃以上の熱変形温度（ＡＳＴＭＤ６４８
、荷重１８．６ ｈ ／ ｃｔｌｌで測定）を有する
熱可塑性芳香族重合体およびフッ素系樹脂の混合組成物
からなる塗膜を被覆セしめたことを特徴とする合成樹脂
押出成形用ダイスを要旨とするものである。That is, in the present invention, the lip portion through which the melt is extruded has a heat distortion temperature of at least 180°C (ASTMD648).
The object of the present invention is to provide a synthetic resin extrusion molding die characterized by being coated with a coating film made of a mixed composition of a thermoplastic aromatic polymer and a fluororesin having a load of 18.6 h/ctll). It is something to do.
本発明で使用する耐熱性の熱可塑性芳香族重合体は少な
くとも１８０℃以上の熱変形温度（ＡＳＴＭＤ６４ｇ
、荷重１８．６に４／−で測定）を有するもので、例え
ばポリスルフォン樹脂、ポリニー樹脂、ポリフェニレン
サルファイド樹脂、ポリカーボネート樹脂等がＪ）る。The heat-resistant thermoplastic aromatic polymer used in the present invention has a heat distortion temperature of at least 180°C (ASTMD64g
, load 18.6 (measured at 4/-), such as polysulfone resin, polynylene resin, polyphenylene sulfide resin, polycarbonate resin, etc.
（５）
これらの耐熱可塑性芳香族重合体と混合されて非粘着性
低摩擦係数、耐熱性の混合組成物を形成する樹脂はポリ
テトラフルオロエチレン等のフッ素系樹脂である。(5) The resin that is mixed with these thermoplastic aromatic polymers to form a non-adhesive, low friction coefficient, heat resistant mixed composition is a fluororesin such as polytetrafluoroethylene.
上記組み合せによる混合組成物の１例としては特公昭５
５−４４７８５号に示されるような熱可塑性芳香族ポリ
スルフォンｌＯ〜９０ ｗｔ％、好ましくは１５ ｗｔ
％〜８５ ｗｔ４とテトラフルオロエチレン重合体９０
〜ｌ Ｑ ｗｔ４好ましくは８５ Ｗ１４−１５ ｗｔ
４からなる被覆用組成物で、金属等の基材に良好に接着
し、非粘着性、低摩擦係数、耐熱性の塗膜を形成するも
のである。An example of a mixed composition of the above combination is
Thermoplastic aromatic polysulfone lO to 90 wt%, preferably 15 wt% as shown in No. 5-44785
% ~ 85 wt4 and tetrafluoroethylene polymer 90
~l Q wt4 preferably 85 W14-15 wt
4, which adheres well to substrates such as metals and forms a non-adhesive, low coefficient of friction, and heat resistant coating film.
該被覆組成物のダイスリップへの被覆は通常被覆面（基
質と称する）を脱脂し、そして基質がフリット付き表面
を有しないならば好ましくは研摩、サンドブラスト、ま
たはエツチングにより粗面化する。そして任意の慣用技
法（例えばスプレー法、浸漬法、ハケ塗膜等）によって
該被覆用組成物を塗布し、次いで８００℃〜４５０℃の
温度で適宜焼結することによって実（６）
施することができる。Application of the coating composition to the die slip typically degreases the coating surface (referred to as the substrate) and, if the substrate does not have a fritted surface, preferably roughens it by sanding, sandblasting, or etching. and applying the coating composition by any conventional technique (e.g., spraying, dipping, brush coating, etc.) and then suitably sintering at a temperature of 800°C to 450°C. I can do it.
熱可塑性芳香族重合体の選択は１８０℃以上の熱変形温
度を有する該重合体の中から適宜選択するが一般的には
押出時のダイスの常用加熱温度により、高温で使用する
ダイスはど熱変形温度の高い重合体が使用さＪ’ｌる７
なお、１８０℃以下の熱変形部）Ｗの重合体は耐熱性が
低いため、本発明の使用には不適である。The thermoplastic aromatic polymer is selected as appropriate from among those having a heat deformation temperature of 180°C or higher, but in general, the temperature of the die used at high temperatures depends on the usual heating temperature of the die during extrusion. A polymer with a high deformation temperature is used. Note that a polymer with a heat deformation temperature of 180° C. or lower) W has low heat resistance and is therefore unsuitable for use in the present invention.
さらに、本発明では、基質への接着性、耐熱性、耐溶剤
性および硬度の、更に優れた塗膜を得ろために、上記組
成ノ吻に例えばイミド樹脂プレポリマーやイ５ドアｉド
樹脂ダ１／ポリマー等で例示さハろ反応性を有する熱硬
化性プレポリマーを混合した混合組成物を使用すること
もできろ。Furthermore, in the present invention, in order to obtain a coating film with even better adhesion to the substrate, heat resistance, solvent resistance, and hardness, for example, an imide resin prepolymer or a 5-door i-do resin is added to the proximal part of the composition. It is also possible to use a mixed composition in which a thermosetting prepolymer having haloreactivity is mixed, such as exemplified by 1/polymer.
この優れた塗膜は熱可塑性芳香族重合体と反応性を有す
る熱硬化性プレポリマーが加熱により反応し、強固な優
れた塗膜に化学的に変化したことによるものである。This excellent coating film is due to the fact that the thermoplastic aromatic polymer and the reactive thermosetting prepolymer react with each other by heating and chemically change into a strong and excellent coating film.
こわらの混合組成物塗膜を被覆オろダイスのリップ部は
第１図や第２図の如く耐着堆積が発生するリップ面であ
るが、第８図の如く樹脂流路の出口附近からリップ面に
かけて被覆すると耐着堆積防止により効果的である。The lip part of the Oro die coated with the coating film of the mixed composition of stiffness is the lip surface where anti-adhesive deposits occur as shown in Figures 1 and 2, but as shown in Figure 8, it is the lip surface where anti-adhesive deposits occur. Coating over the lip surface is more effective in preventing adhesion and build-up.
塗膜の被覆厚みは塗布量により任意にコントロールでき
るが実用り好適な被覆厚みは０．０１ｍ −−０，１０
擺でＪ）る。The coating thickness of the coating film can be arbitrarily controlled by the coating amount, but the preferred coating thickness for practical use is 0.01 m --0.10
J) at the bottom.
本発明が適用できろ合成樹脂押出成形用ダイスは公知の
押出成形用ダイスで例えばチューブロー成形用ダイ、プ
ロフィルタイ、多層ダイ等があり、これらのダイスにお
いて構造等を変更することなく簡単に実施することが可
能である。The synthetic resin extrusion molding dies to which the present invention can be applied include well-known extrusion molding dies such as tube blow molding dies, profiltration molding dies, multilayer dies, etc., and can be easily carried out without changing the structure etc. of these dies. It is possible to do so.
また、本発明は公知のダイスリップ部の耐着堆積防止手
段と併用すると耐着堆積防止はより一層効果を発揮する
。Further, when the present invention is used in combination with a known means for preventing adhesion and accumulation of die slip portions, the anti-adhesion and accumulation prevention effects are even more effective.
本発明の合成樹脂押出成形用ダイスによれば前記公知方
法の欠点が解決され、その上顔料、充填剤、添加剤、発
泡剤等を含有した各種熱可塑性樹脂を押出しても上記含
有物や」二記含有物を含む樹脂の耐着堆積が発生しない
ので長時間の連続運転が可能となり、穴あきゃ表面傷の
ない表面状態がきれいで滑らかな押出物を容易に得るこ
とができる。According to the synthetic resin extrusion molding die of the present invention, the drawbacks of the above-mentioned known methods are solved, and moreover, even when various thermoplastic resins containing pigments, fillers, additives, blowing agents, etc. are extruded, the above-mentioned substances are not removed. Since the adhesion-resistant buildup of the resin containing the above-mentioned substances does not occur, continuous operation for a long time is possible, and extrudates with a clean and smooth surface without holes or surface scratches can be easily obtained.
以下、本発明を実施例によってさらに具体的に説明する
。EXAMPLES Hereinafter, the present invention will be explained in more detail with reference to Examples.
実施例１
口径１００ｍ−幅０．５咽のスリットを有するチューブ
ラ−フィルム用ダイスのリップ部（第１図１の箇所）を
グリッＩ・ブラスト仕上（ブラスト剤：メチコライ１、
ＶＩＣ，Ａ１．２０３ 粒径０．２〜０．６ ｔａｎ
）し、トルエンで脱脂処理した後、該リップ部に式
の反復単位および還元粘度０．４８（１１ジメチルフオ
ルムアミド溶液で２５℃で測定）を（９）
有するポリエーテルスルフォン（英ＩＣ工 製ヴイクト
レックス、熱変形温度２０８℃）５０重量部とポリテト
ラフルオロエチレン（英工ロ製フルオンＬ１７１）５０
重量部の混合物のＮピ
ーメチルー２−偵ロリドン溶液（２５Ｗｔ＝１ ）をノ
ズル径１．２閣のスプレーガンにてスプレー圧力２．５
Ｋｇ ／ ａｌｌで塗布した。Example 1 The lip part of a tubular film die having a slit with a diameter of 100 m and a width of 0.5 mm (location shown in Fig. 1) was finished with Grit I and blasting (blasting agent: Meticolai 1,
VIC, A1.203 Particle size 0.2-0.6 tan
) and after degreasing with toluene, polyether sulfone (VI manufactured by IC Kogyo, UK) having a repeating unit of the formula and a reduced viscosity of 0.48 (measured at 25°C in 11 dimethylformamide solution) was added to the lip. 50 parts by weight of Cutrex, heat distortion temperature 208°C) and 50 parts by weight of polytetrafluoroethylene (Fluon L171 manufactured by Eikoro)
Spray part by weight of a mixture of N-peamethyl-2-retrolidone solution (25Wt=1) at a pressure of 2.5 using a spray gun with a nozzle diameter of 1.2 mm.
Coated at Kg/all.
塗布後１００℃で１５分間乾燥してから、８６０℃で１
５分間焼結ｊ〜、膜厚４ｏμの塗膜を形成せしめた。After coating, dry at 100℃ for 15 minutes, then dry at 860℃ for 15 minutes.
Sintering was performed for 5 minutes to form a coating film with a thickness of 4 μm.
該ダイスを口径５０ｍｍの押出機に取り付け、ホリエチ
レン（住友化学工業製スｉ力センＭニー１．２ 、密度
０．９２８）１００重量部にアゾジカルホンアミド（大
塚化学工業製ユニホームＡＺ）０．７重量部を添加した
混合物を２００℃に加熱した押出機に供給し、１６０Ｔ
ｌ：に加熱した該ダイスより大気圧下へ押出し、厚み０
．２■、折径８００ｍ発泡倍率１．６倍の発泡フィルム
を製造した。The die was attached to an extruder with a diameter of 50 mm, and 100 parts by weight of polyethylene (Sumitomo Chemical Co., Ltd.'s SiRiksen M Knee 1.2, density 0.928) was added with 0 parts of azodicalphonamide (Otsuka Chemical Co., Ltd., Uniform AZ). .7 parts by weight was added to the extruder heated to 200°C, and the mixture was heated to 160T.
It is extruded under atmospheric pressure from the die heated to
．． 2. A foamed film with a fold diameter of 800 m and a foaming ratio of 1.6 times was produced.
４２時間連続運転を行なったがリップ部に発（ｌＯ）
泡剤残音、樹脂片等が耐着、堆積することなく、表面状
態が滑らかでかつきｌ［いな発泡フィルムが連続的に得
らＪまた。After 42 hours of continuous operation, a foamed film with a smooth surface was obtained without any foaming agent residue, resin particles, etc. adhering or accumulating. J again.
実施例２
０径２００ｎ其、幅０．７ ｍのスリットを有するチュ
ーブラ−フィルム用ダイスのリップ部（第１図１の箇所
）をグリッドブラスト仕上（ブラスト剤：メテコライＩ
−ｖｌ！′Ａｌ２Ｏ３粒径０．２〜０．６胡）し、トル
エンで脱脂処理した後、該リップ部に実施例１で用いた
ポリエーテルスルフォン、ポリテトラフルオロエチレン
を各３０重量部とボリイεド樹脂（ロース・ブーラン社
製ケルイｉドロ０１）４０重量部の混合物のＮ−メチル
−２−ピロリドン溶液（２０Ｗ１４ ）をノズル径１−
２ ｍｍのスプレーガンにてスプレー圧力２．５ Ｋｇ
／ ｔｎｌで塗布した。Example 2 The lip part of a tubular film die (the location shown in Fig. 1) having a slit with a diameter of 200 nm and a width of 0.7 m was grid-blasted (blasting agent: Metecolai I).
-vl! After degreasing with toluene, the lip part was coated with 30 parts by weight each of the polyether sulfone and polytetrafluoroethylene used in Example 1 and the polyester resin. (Kelui i Dro 01 manufactured by Loos-Boulin) 40 parts by weight of a mixture of N-methyl-2-pyrrolidone solution (20W14) was poured into a nozzle with a diameter of 1-
Spray pressure 2.5 Kg with 2 mm spray gun
/tnl.
塗布後１００℃で１５分間乾燥してから、８６０℃で１
５分間焼結し、膜厚８０μの塗膜を形成せしめた。After coating, dry at 100℃ for 15 minutes, then dry at 860℃ for 15 minutes.
Sintering was performed for 5 minutes to form a coating film with a thickness of 80 μm.
該ダイスを口径６５ｓａｍの押出機に取り付け、ポリエ
チレン（住友化学工業製スミカセンＭ Ｘ ＝ Ｑ、
４ ＝密度０．９２８）１００重量部にチタン白（石原
産業製タイベークＲ５５０）２重量部を添加した混合物
を１８０℃に加熱１ノた押出機に供給し、１８０℃に加
熱した該ダイスより押出し、厚み０．１ ｗａｇ、折径
６００籠の白色フィルムを製造した。７２時間連続運転
を行なったがリップ部にチタン白、樹脂等が耐着堆積す
ることなく表面状態が滑らかでかつきれいな白色フィル
ムが連続的に得られた。The die was attached to an extruder with a diameter of 65 sam, and polyethylene (Sumikasen MX = Q, manufactured by Sumitomo Chemical Co., Ltd.
4 = Density 0.928) A mixture of 100 parts by weight and 2 parts by weight of titanium white (Tiebake R550 manufactured by Ishihara Sangyo) was heated to 180°C and supplied to an extruder for 1 turn, and extruded from the die heated to 180°C. A white film having a thickness of 0.1 wag and a folding diameter of 600 was produced. After 72 hours of continuous operation, a clean white film with a smooth surface was continuously obtained without any adhesion of titanium white, resin, etc. on the lip portion.
比較例１
リップ部（第１図１の箇所）に本発明の塗膜被覆を施さ
ない通常（硬質クロームメッキ仕上）のチューブラ−フ
ィルム用ダイ（口径１００■、スリット幅０．５ ｖａ
ｎ ）を用い、実施例１と全く同様の条件で発泡フィル
ムを製造した。Comparative Example 1 A conventional (hard chrome plated) tubular film die (bore diameter: 100 mm, slit width: 0.5 va), in which the lip portion (location shown in Fig. 1) is not coated with the coating film of the present invention.
A foamed film was produced under exactly the same conditions as in Example 1 using (n).
押出開始時より、リップ部に発泡剤残音−樹脂片の耐着
、堆積が発生し、１時間後には発泡フィルムは耐着堆積
物が接触して、フィルムの表面にすり傷が発生し、ザラ
ザラの表面状態になった。From the beginning of extrusion, foaming agent residual noise and adhesion and accumulation of resin pieces occurred at the lip part, and after one hour, the foamed film came into contact with the adhesion-resistant deposits, causing scratches on the surface of the film. The surface became rough.
さらに押出開始２時間後には耐着堆積物の接触により、
発泡フィルムに穴あきが発生し折径が小さくなって製品
の加工が不能となった。Furthermore, 2 hours after the start of extrusion, due to contact with anti-adhesive deposits,
Holes formed in the foamed film and the fold diameter became small, making it impossible to process the product.
図面は本発明の一実施態様を示すもので第１図はチュー
ブラ−フィルム用ダイスの横ｔＦＴ面図であり、図中１
は塗膜被覆部、２は樹脂流路、８は空気吹出口である。
第２図はフィルム用Ｔダイの横断面図で図中１は塗膜被
覆部、２は樹脂流路である。
第８図はパイプ用ダイの横断面図で図中１は塗膜被覆部
、２は樹脂流路である。
（１８完）The drawings show one embodiment of the present invention, and FIG. 1 is a lateral tFT view of a die for tubular film.
2 is a resin flow path, and 8 is an air outlet. FIG. 2 is a cross-sectional view of a T-die for film. In the figure, 1 is a coating portion, and 2 is a resin flow path. FIG. 8 is a cross-sectional view of the pipe die. In the figure, 1 is a coating portion, and 2 is a resin flow path. (18 completed)
Claims (2)
３０℃以上の熱変形温度を有する熱可塑性芳香族重合体
およびフッ素系樹脂の混合組成物からなる塗膜を被覆せ
しめたことを特徴とする合成樹脂押出成形用ダイス。(1) At least 1 part on the lip where the melt is extruded
A synthetic resin extrusion molding die, characterized in that it is coated with a coating film made of a mixed composition of a thermoplastic aromatic polymer and a fluororesin having a heat distortion temperature of 30° C. or higher.
１３０℃以上の熱変形温度を有する熱可塑性芳香族重合
体、フッ素系樹脂および反応性を有する熱硬化性プレポ
リマーの混合組成物からなる塗膜を被覆せしめたことを
特徴とする合成樹脂押出成形用ダイス。(2) A coating consisting of a mixed composition of a thermoplastic aromatic polymer having a heat distortion temperature of at least 130°C, a fluororesin, and a reactive thermosetting prepolymer is applied to the lip portion through which the melt is extruded. A synthetic resin extrusion molding die characterized by being coated with a membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56111764A JPS5812743A (en) | 1981-07-16 | 1981-07-16 | Die for extrusion molding of synthetic resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56111764A JPS5812743A (en) | 1981-07-16 | 1981-07-16 | Die for extrusion molding of synthetic resin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5812743A true JPS5812743A (en) | 1983-01-24 |
Family
ID=14569586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56111764A Pending JPS5812743A (en) | 1981-07-16 | 1981-07-16 | Die for extrusion molding of synthetic resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5812743A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0372997A2 (en) * | 1988-12-08 | 1990-06-13 | Ncr International Inc. | Static dissipation in a printer |
| US5008056A (en) * | 1988-09-26 | 1991-04-16 | Union Carbide Chemicals And Plastics Technology Corporation | Reduction in die drool in filled resins and product improvement |
| US5064594A (en) * | 1989-10-06 | 1991-11-12 | E. I. Du Pont De Nemours And Company | Extrusion process for difficultly-melt-processible polymers |
| US5151234A (en) * | 1989-03-31 | 1992-09-29 | Sekisui Kagaku Kogyo Kabushiki Kaisha | Method for the manufacture of thermoplastic resin sheets |
| US5281381A (en) * | 1992-11-04 | 1994-01-25 | Mobil Oil Corporation | Method for extruding polyolefins containing vinylidene chloride polymers |
| BE1009344A3 (en) * | 1995-04-12 | 1997-02-04 | Dyka Plastics Naamloze Vennoot | Nozzle for extruding plastic |
| EP0838322A2 (en) * | 1996-10-25 | 1998-04-29 | Menza Limited | A method of and apparatus for blow-moulding |
| WO2000037235A1 (en) * | 1998-12-18 | 2000-06-29 | Kimberly-Clark Worldwide, Inc. | Reduced die lip buildup extrusion of polymer compositions |
| KR100467989B1 (en) * | 1996-08-26 | 2005-12-21 | 후지 덴키 가부시끼가이샤 | Photoconductor for Internal Irradiation Electrophotography |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5263976A (en) * | 1975-11-21 | 1977-05-26 | Asahi Glass Co Ltd | Laminated composite comprising fluorine resin and polyarylene sulfide resin |
| JPS542770B2 (en) * | 1974-04-11 | 1979-02-13 | ||
| JPS5516005A (en) * | 1978-06-27 | 1980-02-04 | Agency Of Ind Science & Technol | Production of vinyl chloride resin molding |
| JPS5545704A (en) * | 1978-09-26 | 1980-03-31 | Dainippon Ink & Chem Inc | Resin composition |
-
1981
- 1981-07-16 JP JP56111764A patent/JPS5812743A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS542770B2 (en) * | 1974-04-11 | 1979-02-13 | ||
| JPS5263976A (en) * | 1975-11-21 | 1977-05-26 | Asahi Glass Co Ltd | Laminated composite comprising fluorine resin and polyarylene sulfide resin |
| JPS5516005A (en) * | 1978-06-27 | 1980-02-04 | Agency Of Ind Science & Technol | Production of vinyl chloride resin molding |
| JPS5545704A (en) * | 1978-09-26 | 1980-03-31 | Dainippon Ink & Chem Inc | Resin composition |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5008056A (en) * | 1988-09-26 | 1991-04-16 | Union Carbide Chemicals And Plastics Technology Corporation | Reduction in die drool in filled resins and product improvement |
| EP0372997A2 (en) * | 1988-12-08 | 1990-06-13 | Ncr International Inc. | Static dissipation in a printer |
| US5151234A (en) * | 1989-03-31 | 1992-09-29 | Sekisui Kagaku Kogyo Kabushiki Kaisha | Method for the manufacture of thermoplastic resin sheets |
| US5064594A (en) * | 1989-10-06 | 1991-11-12 | E. I. Du Pont De Nemours And Company | Extrusion process for difficultly-melt-processible polymers |
| US5281381A (en) * | 1992-11-04 | 1994-01-25 | Mobil Oil Corporation | Method for extruding polyolefins containing vinylidene chloride polymers |
| BE1009344A3 (en) * | 1995-04-12 | 1997-02-04 | Dyka Plastics Naamloze Vennoot | Nozzle for extruding plastic |
| KR100467989B1 (en) * | 1996-08-26 | 2005-12-21 | 후지 덴키 가부시끼가이샤 | Photoconductor for Internal Irradiation Electrophotography |
| EP0838322A2 (en) * | 1996-10-25 | 1998-04-29 | Menza Limited | A method of and apparatus for blow-moulding |
| EP0838322A3 (en) * | 1996-10-25 | 1999-08-11 | Menza Limited | A method of and apparatus for blow-moulding |
| WO2000037235A1 (en) * | 1998-12-18 | 2000-06-29 | Kimberly-Clark Worldwide, Inc. | Reduced die lip buildup extrusion of polymer compositions |
| US6245271B1 (en) | 1998-12-18 | 2001-06-12 | Kimberly-Clark Worldwide, Inc. | Reduced die lip buildup extrusion of polymer compositions |
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