WO2012014389A1 - 押出ダイヘッド - Google Patents
押出ダイヘッド Download PDFInfo
- Publication number
- WO2012014389A1 WO2012014389A1 PCT/JP2011/003915 JP2011003915W WO2012014389A1 WO 2012014389 A1 WO2012014389 A1 WO 2012014389A1 JP 2011003915 W JP2011003915 W JP 2011003915W WO 2012014389 A1 WO2012014389 A1 WO 2012014389A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shell
- die head
- extrusion die
- core
- chip
- 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.)
- Ceased
Links
Images
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
-
- 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
-
- 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
- B29C48/256—Exchangeable extruder parts
- B29C48/2566—Die parts
-
- 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
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/3001—Extrusion nozzles or dies characterised by the material or their manufacturing process
- B29C48/3003—Materials, coating or lining therefor
-
- 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
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/325—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections
-
- 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
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/325—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections
- B29C48/327—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections with centering means
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/04—Extrusion blow-moulding
- B29C49/04102—Extrusion blow-moulding extruding the material continuously
-
- 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
Definitions
- the present invention relates to an extrusion die head that is attached to the tip of an extruder and extrudes a molten resin material with a constant cross-sectional shape.
- a molded product having a constant cross-sectional shape is usually obtained by extruding a resin material melt-kneaded by an extruder through a resin flow path in an extrusion die head attached to the tip of the extruder. Mold continuously. At this time, when molding is continued for a long time, it is known that a deteriorated resin adheres to the discharge port of the extrusion die head (see FIG. 5 showing an outline of an example of a conventional extrusion die head). Such deposits are generally referred to as “meani”.
- Patent Document 1 a nozzle piece is attached to a die plate in a replaceable manner, and the nozzle is removed along with the nozzle piece, thereby reducing labor and cost required for removing the nozzle.
- Patent Document 2 a cylindrical member having a tapered portion on the inner surface is attached to the die lip portion, so that the cani generated on the die lip portion adheres to the tapered portion and is transferred from the die lip portion to the tapered portion by an extrusion force. In order to remove the mains.
- Patent Document 1 can reduce the labor and cost required to remove the spear, it is necessary to stop the production line when replacing the nozzle piece, thereby improving productivity. It was not reached. Further, in the technique disclosed in Patent Document 2, for example, when extruding a cylindrical parison used for blow molding, it is not possible to remove the mains generated inside the parison. Neither technique has achieved satisfactory results.
- an object of the present invention is to provide an extrusion die head that can suppress the occurrence of a scum at its discharge port when performing extrusion molding continuously for a long time.
- An extrusion die head is an extrusion die head attached to a tip portion of an extruder, and includes a shell having a discharge port through which a resin material melt-kneaded by the extruder is extruded, and a peripheral edge of the discharge port A plate-shaped shell chip formed with an opening disposed around the discharge port along the slidable direction is detachably attached to the shell, and at least the opening formed in the shell chip A non-adhesive coating is applied along the circumference.
- the extrusion die head of the present invention it is possible to completely prevent the occurrence of a mess at the discharge port over a long period of time.
- FIG. 1 is a cross-sectional view showing an outline of the main part of the extrusion die head according to the present embodiment, centering on the discharge port.
- 2 is an enlarged cross-sectional view of a main part showing a portion surrounded by a one-dot chain line in FIG. 1
- FIG. 3 is a schematic plan view of the vicinity of the discharge port of the extrusion die head shown in FIG. In these drawings, the dimensions of each part are exaggerated as necessary (the same applies to FIGS. 4 and 5 described later).
- the extrusion die head 1 of the present embodiment includes a shell 2 that forms a discharge port 3 and a core 4 that is installed in the shell 2 with a predetermined gap between the discharge port 3 formed in the shell 2. Yes. Thereby, the extrusion die head 1 is attached to the tip of an extruder (not shown), and the resin material melted and kneaded by the extruder passes through the resin flow path 5 formed between the shell 2 and the core 4.
- the discharge port 3 that opens in an annular shape is pushed out in a hollow shape.
- a plate-shaped shell chip 6 is detachably attached to the shell 2 on the opening side of the discharge port 3 (the lower surface side of the shell 2 in the drawing).
- the shell chip 6 has an opening 7 disposed around the discharge port 3 along the periphery of the discharge port 3 formed in the shell 2 (see FIG. 3).
- a non-stick coating is applied.
- the shell chip 6 may be attached by appropriate means such as bolt tightening so that the shell chip 6 does not fall off during operation of the apparatus. Good.
- the non-adhesive coating applied to the shell chip 6 is not particularly limited as long as the resin extruded from the discharge port 3 is difficult to adhere.
- fluorine resins such as polytetrafluoroethylene (PTFE), perfluoroalkoxy (PFA), tetrafluoroethylene / hexafluoropropylene copolymer (FEP), ethylene / tetrafluoroethylene copolymer (ETFE) alone
- a PFA-PEEK composite coating obtained by blending PFA and PEEK is preferable because of its good wear resistance and the effect of scratching being difficult to transfer to the product.
- Such a fired coating film is applied at a predetermined temperature after applying a dispersion liquid to which various additives are added together with the resin component, if necessary, to a metal base material subjected to a ground treatment as necessary. By baking, it can be formed with a thickness of about 30 to 130 ⁇ m.
- the extrusion die head 1 of the present embodiment is provided with such a non-adhesive coating so that such a shell chip 6 is attached to the opening side of the discharge port 3 and the periphery of the discharge port 3 is surrounded.
- the opening 7 of the shell chip 6 By disposing the opening 7 of the shell chip 6, the resin extruded from the extrusion die head 1 is made difficult to adhere to the discharge port 3.
- the deteriorated resin considered to be the cause of the mains is prevented from being accumulated in the discharge port 3 so that the generation of the mains can be suppressed completely or over a long period of time.
- the shell chip 6 can be removed when cleaning the extrusion die head 1 as necessary, such as during maintenance of the apparatus or when replacing the resin. That makes it easier. If the shell chip 6 removed from the shell 2 is replaced with a cleaned shell chip 6 or a new shell chip 6, the cleaning operation can be completed in a shorter time.
- the non-adhesive coating applied to the shell chip 6 may be applied at least along the inner periphery of the opening 7 formed in the shell chip 6. However, in order to prevent the coating from being peeled off over time, it is preferable to apply the coating so that it also wraps around the attachment surface to the shell 2, that is, the surface facing the shell 2. From the viewpoint of facilitating the coating operation, a non-stick coating may be applied to the entire surface of the shell chip 6. In the example shown in FIG. 1, a non-adhesive coating is applied to the entire surface of the shell chip 6.
- the diameter ⁇ B of the opening 7 formed in the shell chip 6 is set to be equal to or larger than the diameter ⁇ A ( ⁇ A ⁇ ⁇ B) of the discharge port 3 so as not to hinder the flow of the resin pushed out from the discharge port 3.
- the intended purpose of making it difficult for the resin to adhere to the discharge port 3 can be achieved. It tends to disappear.
- the taper part 8 which expands in diameter along the extrusion direction of resin can be provided in the opening part 7 side of the shell chip
- the inclination angle ⁇ a of the tapered portion 8 with respect to the attachment surface of the shell chip 6 to the shell 2, that is, the surface facing the shell 2 is 20 ° or less.
- the inner periphery of the opening 7 be an inner surface 9 having a thickness Ta parallel to the resin extrusion direction of 0.1 to 0.5 mm (FIG. 2). reference). Furthermore, by forming the inner side surface 9 having such a thickness on the inner periphery of the opening 7, it becomes easy to apply a non-adhesive coating along the inner periphery of the opening 7.
- the shell chip 6 is prevented from becoming thicker than necessary, and the portion to be coated is reduced. From this point of view, the upper limit of the thickness Ta of the inner side surface 9 was set.
- the core chip 10 with the same non-adhesive coating is detachably attached to the core 4 that forms the discharge port 3 together with the shell 2.
- the resin extruded from the extrusion die head 1 is prevented from adhering to the core 4 side as well, thereby preventing the occurrence of a stain on the core 4 side.
- the core chip 10 When the core chip 10 is detachably attached to the core 4, in the example shown in FIG. 1, the plate-like core chip 10 that covers the tip surface of the core 4 is attached. Although not particularly illustrated, when the core chip 10 is detachably attached to the core 4, the core chip 10 may be attached by appropriate means such as bolting as described for the shell chip 6.
- the core chip 10 can be removed when the extrusion die head 1 is cleaned as necessary. For this reason, if the core chip 10 removed from the core 4 is replaced with a cleaned core chip 10 or a new core chip 10, the cleaning operation can be completed in a shorter time. This is the same as described for the shell chip 6.
- the non-adhesive coating applied to the core chip 10 only needs to be applied at least along the outer periphery of the core chip 10. At this time, as in the case where the coating is applied to the shell chip 6, in order to prevent the coating from being peeled off over time, the coating is made to wrap around the mounting surface to the core 4, that is, the surface facing the core 4. It is preferable to apply a coating. Similarly, from the viewpoint of facilitating the coating operation, a non-adhesive coating may be applied to the entire surface of the core chip 10. In the example shown in FIG. 1, a non-adhesive coating is applied to the entire surface of the core chip 10.
- the outer diameter ⁇ D of the core chip 10 is set so that the outer diameter ⁇ C of the tip surface of the core 4 is equal to or smaller than the outer diameter ⁇ C ( ⁇ D ⁇ ⁇ C) so as not to hinder the flow of the resin pushed out from the discharge port 3. It is preferable to do this. Also in this case, between the outer diameter ⁇ D of the core chip 10 and the outer diameter ⁇ C of the front end surface of the core 4 so that the outer peripheral edge of the core chip 10 and the peripheral edge of the front end surface of the core 4 are not separated too much. It is preferable to satisfy the relationship ⁇ C ⁇ ⁇ D + 0.2 mm. It is preferable to adjust both dimensions appropriately so that the outer diameter ⁇ D of the core chip 10 is slightly smaller than the outer diameter ⁇ C of the front end surface of the core 4.
- the taper part 11 diameter-reduced along the extrusion direction of resin can be provided in the outer peripheral side of the core chip
- the inclination angle ⁇ b of the taper portion 11 with respect to the attachment surface of the core chip 10 to the core 4, that is, the surface facing the core 4, is 20 ° or less. By setting such an angle, the adhesion of the resin to the core chip 10 can be more effectively suppressed as in the case of the shell chip 6.
- the outer periphery is preferably an outer surface 12 having a thickness Tb parallel to the resin extrusion direction of 0.1 to 0.5 mm (see FIG. 2).
- Tb thickness
- the non-adhesive coating can be easily applied along the outer periphery of the core chip 10 as in the case of the shell chip 6.
- the upper limit of the thickness Tb of the outer surface is set in the same manner as described for the shell chip 6. It is.
- FIG. 4 is a cross-sectional view showing the outline of the main part of the extrusion die head according to the present embodiment, centering on the discharge port.
- the core chip 10 is detachably attached to the core 4 and the core chip 10 is provided with a non-adhesive coating.
- This embodiment is different from the first embodiment described above in that a non-adhesive coating is directly applied to the core 4.
- the core tip portion 4a is separable from the base portion 4b, and a non-adhesive coating is applied to the entire surface of the core tip portion 4a to be separated.
- the core tip 4a is fixed to the base 4b by appropriate means such as bolting.
- the core tip 4a can be separated from the base 4b, and the coating is applied from the tip edge 4c to the side of the separated core tip 4a, It is preferable to apply the coating so as to go around the surface facing the base 4b. Furthermore, from the viewpoint of facilitating the coating operation, it is preferable to apply a non-adhesive coating to the entire surface of the core tip portion 4a as in the example shown in FIG.
- This embodiment is different from the above-described first embodiment in the above points, and the other configurations are the same as those in the first embodiment, so detailed description of other configurations is omitted.
- FIG. 5 is a cross-sectional view showing an outline of a main part centering on the discharge port in an example of a conventional extrusion die head. Moreover, about the structure which is common in the extrusion die head 1 shown in FIG. 1, it shows with the same code
- the conventional extrusion die head shown in FIG. 5 was improved as in the example shown in FIG. Specifically, the shell chip 6 having a non-adhesive coating on the entire surface is attached to the opening side of the discharge port 3, and the opening of the shell chip 6 is surrounded along the periphery of the discharge port 3. Part 7 was disposed. On the other hand, the core chip 10 with the non-adhesive coating applied to the entire surface was attached so as to cover the tip surface of the core 4. As the non-adhesive coating, a PFA-PEEK composite coating film was baked with an average thickness of 100 ⁇ m. Using such an extrusion die head 1, a cylindrical parison was continuously extruded under the same conditions as before. When the discharge port was observed after 720 minutes had elapsed from the start of molding, no occurrence of a spot was observed.
- the core 4 is provided in the shell 2 with a predetermined gap between the discharge port 3 formed in the shell 2 and the molten resin is extruded in a hollow shape.
- the present invention is not limited to this.
- An extrusion die head in which the molten resin is extruded in a solid state by omitting the core 4 can be used.
- the shell chip 6 as described above may be detachably attached to the shell 2.
- the present invention attaches the shell chip 6 or the core chip 10 with the non-adhesive coating as described above to the conventional extrusion die head in a detachable manner, or provides the core 4 with a non-adhesive coating. It can be applied by simply making improvements as appropriate.
- the present invention can be applied to an extrusion die head that is attached to the tip of an extruder and extrudes a molten resin material.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
このため、定められた時間ごとに成形作業を中止して、押出ダイヘッドを分解・清掃してメヤニを除去するという煩雑な作業が必要となるばかりか、その都度、生産ラインを停止しなければならず、メヤニの除去作業が生産性を低下させる要因にもなっていた。
すなわち、本発明は、押出成形を長時間連続して行うにあたり、その吐出口にメヤニが発生するのを抑止することができる押出ダイヘッドの提供を目的とする。
まず、本発明に係る押出ダイヘッドの第一実施形態について説明する。
図1は、本実施形態における押出ダイヘッドの吐出口を中心に、その要部の概略を示す断面図である。また、図2は、図1中一点鎖線で囲む部分を示す要部拡大断面図であり、図3は、図1に示す押出ダイヘッドの吐出口付近を図中下方からみた概略平面図である。
なお、これらの図において、各部の寸法は必要に応じて誇張して描写している(後述する図4,図5においても同様)。
なお、特に図示しないが、シェルチップ6をシェル2に対して着脱可能に取り付けるには、装置運転時にシェルチップ6が脱落することがないように、ボルト締めなどの適宜手段によって取り付けるようにすればよい。
このような焼成塗膜は、上記樹脂成分とともに必要に応じて各種の添加剤が加えられた分散液を、必要に応じて下地処理を施した金属母材に塗工した後に、所定の温度で焼成することによって30~130μm程度の厚みで形成することができる。
なお、図1に示す例にあっては、シェルチップ6の全面に非粘着性コーティングを施している。
ただし、シェルチップ6に形成された開口部7の内周縁と吐出口3の周縁とが離れすぎてしまうと、吐出口3に樹脂が付着し難くなるようにするという所期の目的を達成できなくなってしまう傾向にある。このような不具合を避けるために、シェル2に形成された吐出口3の口径φAと、シェルチップ6に形成された開口部7の口径φBとの間には、φB≦φA+0.2mmなる関係が成り立つようにするのが好ましい。開口部7の口径φBを吐出口3の口径φAよりも若干大きめとなるようにして、初期の目的を達成できる範囲で両者の寸法を適宜調整するのが好ましい。
このとき、シェルチップ6のシェル2への取り付け面、すなわち、シェル2に対向する面に対するテーパー部8の傾斜角度θaは20゜以下とするのが好ましい。このような角度とすることで、より効果的にシェルチップ6への樹脂の付着を抑えることができる。
なお、かかる内側面9の厚みTaが上記範囲の上限を超えても同様の効果が得られるが、シェルチップ6が必要以上に厚くなってしまわないようにするとともに、コーティングを施す部分を少なくするという観点から、当該内側面9の厚みTaの上限を設定した。
特に図示しないが、コアチップ10をコアに4対して着脱可能に取り付けるに際しても、シェルチップ6について説明したのと同様に、ボルト締めなどの適宜手段によって取り付けるようにすればよい。
なお、図1に示す例にあっては、コアチップ10の全面に非粘着性のコーティングを施している。
この場合も、コアチップ10の外周縁とコア4の先端面の周縁とが離れすぎてしまわないように、コアチップ10の外径φDと、コア4の先端面の外径φCとの間には、φC≦φD+0.2mmなる関係が成り立つようにするのが好ましい。コアチップ10の外径φDが、コア4の先端面の外径φCよりも若干小さめとなるように、両者の寸法を適宜調整するのが好ましい。
このとき、コアチップ10のコア4への取り付け面、すなわち、コア4に対向する面に対するテーパー部11の傾斜角度θbは20゜以下とするのが好ましい。このような角度とすることで、より効果的にコアチップ10への樹脂の付着を抑えることができるのも、シェルチップ6について説明したのと同様である。
次に、本発明に係る押出ダイヘッドの第二実施形態について説明する。
図4は、本実施形態における押出ダイヘッドの吐出口を中心に、その要部の概略を示す断面図である。
なお、図5は、従来の押出ダイヘッドの一例において、その吐出口を中心とする要部の概略を示す断面図である。また、図1に示す押出ダイヘッド1と共通する構成については同じ符号で示して説明を省略する。
このような押出ダイヘッド1を用いて、従来と同じ条件で筒状のパリソンを連続的に押出成形した。成形開始から720分経過した後に吐出口を観察したところ、メヤニの発生は認められなかった。
2 シェル
3 吐出口
4 コア
6 シェルチップ
7 開口部
8 テーパー部
9 内側面
10 コアチップ
11 テーパー部
12 外側面
φA シェルに形成された前記吐出口の口径
φB シェルチップに形成された前記開口部の口径
φC コアの先端面の外径
φD コアチップの外径
Claims (15)
- 押出機の先端部に取り付けられる押出ダイヘッドであって、
前記押出機によって溶融混練された樹脂材料が押し出される吐出口が形成されたシェルを備え、
前記吐出口の周縁に沿って前記吐出口を囲んで配設される開口部が形成された板状のシェルチップが、前記シェルに着脱可能に取り付けられているとともに、
少なくとも前記シェルチップに形成された開口部の内周に沿って、非粘着性のコーティングを施したことを特徴とする押出ダイヘッド。 - 前記シェルチップの開口部側に、樹脂の押し出し方向に沿って拡径するテーパー部を設けた請求項1に記載の押出ダイヘッド。
- 前記シェルチップの前記シェルへの取り付け面に対する前記テーパー部の傾斜角度が20゜以下である請求項2に記載の押出ダイヘッド。
- 前記シェルチップの開口部の内周を、樹脂の押し出し方向に平行な厚み0.1~0.5mmの内側面とした請求項1~3のいずれか一項に記載の押出ダイヘッド。
- 前記シェルに形成された前記吐出口の口径φAと、前記シェルチップに形成された前記開口部の口径φBとの間に、
φA ≦ φB
なる関係が成り立つ請求項1~4のいずれか一項に記載の押出ダイヘッド。 - 前記シェルに形成された前記吐出口の口径φAと、前記シェルチップに形成された前記開口部の口径φBとの間に、
φB ≦ φA + 0.2mm
なる関係が成り立つ請求項5に記載の押出ダイヘッド。 - 前記押出機によって溶融混練された樹脂材料が中空状に押し出されるように、前記シェルに形成された前記吐出口との間に所定の空隙を隔てて前記シェル内に設置したコアを備え、
前記コアの先端面を覆う板状のコアチップを着脱可能在に取り付けるとともに、
少なくとも前記コアチップの外周に沿って、非粘着性のコーティングを施したこと請求項1~6のいずれか一項に記載の押出ダイヘッド。 - 前記コアチップの外周側に、樹脂の押し出し方向に沿って縮径するテーパー部を設けた請求項7に記載の押出ダイヘッド。
- 前記コアチップの前記コアへの取り付け面に対する前記テーパー部の傾斜角度が20゜以下である請求項8に記載の押出ダイヘッド。
- 前記コアチップの外周を、樹脂の押し出し方向に平行な厚み0.1~0.5mmの外側面とした請求項7~9のいずれか一項に記載の押出ダイヘッド。
- 前記コアの先端面の外径φCと、前記コアチップの外径φDとの間に、
φD ≦ φC
なる関係が成り立つ請求項7~10のいずれか一項に記載の押出ダイヘッド。 - 前記コアの先端面の外径φCと、前記コアチップの外径φDとの間に、
φC ≦ φD + 0.2mm
なる関係が成り立つ請求項11に記載の押出ダイヘッド。 - 前記押出機によって溶融混練された樹脂材料が中空状に押し出されるように、前記シェルに形成された前記吐出口との間に所定の空隙を隔てて前記シェル内に設置したコアを備え、
少なくとも前記コアの先端エッジ部に沿って非粘着性のコーティングを施した請求項1~6のいずれか一項に記載の押出ダイヘッド。 - 前記非粘着性のコーティングが、フッ素系樹脂を含む焼成塗膜である請求項1~13に記載の押出ダイヘッド。
- 前記フッ素系樹脂を含む焼成塗膜が、PFA-PEEK複合塗膜である請求項14に記載の押出ダイヘッド。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP11811994.0A EP2599609B1 (en) | 2010-07-26 | 2011-07-07 | Extrusion die head |
| US13/808,797 US8985992B2 (en) | 2010-07-26 | 2011-07-07 | Extrusion die head |
| CN201180036033.6A CN103052488B (zh) | 2010-07-26 | 2011-07-07 | 挤压模头 |
| KR1020137001891A KR101444625B1 (ko) | 2010-07-26 | 2011-07-07 | 압출 다이 헤드 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010167215A JP4998606B2 (ja) | 2010-07-26 | 2010-07-26 | 押出ダイヘッド |
| JP2010-167215 | 2010-07-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012014389A1 true WO2012014389A1 (ja) | 2012-02-02 |
Family
ID=45529626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2011/003915 Ceased WO2012014389A1 (ja) | 2010-07-26 | 2011-07-07 | 押出ダイヘッド |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US8985992B2 (ja) |
| EP (1) | EP2599609B1 (ja) |
| JP (1) | JP4998606B2 (ja) |
| KR (1) | KR101444625B1 (ja) |
| CN (1) | CN103052488B (ja) |
| WO (1) | WO2012014389A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014127958A1 (de) * | 2013-02-21 | 2014-08-28 | Battenfeld-Cincinnati Germany Gmbh | Vorrichtung zur herstellung von kunststoffrohren |
| WO2014127959A1 (de) * | 2013-02-21 | 2014-08-28 | Battenfeld-Cincinnati Germany Gmbh | Vorrichtung zur herstellung von kunststoffrohren |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013147224A1 (ja) | 2012-03-30 | 2013-10-03 | 住友電工ファインポリマー株式会社 | 樹脂離型性治具 |
| CN102825771A (zh) * | 2012-09-06 | 2012-12-19 | 住电光纤光缆(深圳)有限公司 | 一种挤塑机和处理挤塑机出模口的流涎的方法 |
| CN103331798B (zh) * | 2013-06-18 | 2016-01-20 | 泗阳蓝阳托盘设备科技有限公司 | 纵向结构不分层植物纤维挤出机 |
| CN103660227A (zh) * | 2014-01-10 | 2014-03-26 | 长园电子(集团)有限公司 | 一种塑料管材挤出口模 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5355687U (ja) * | 1976-10-14 | 1978-05-12 | ||
| JPH06190904A (ja) * | 1992-12-25 | 1994-07-12 | Ube Ind Ltd | ブロー成形用偏平ダイス |
| JPH06198705A (ja) * | 1993-01-05 | 1994-07-19 | Sekisui Chem Co Ltd | 押出成形用金型の製造方法 |
| JPH09234780A (ja) * | 1996-02-28 | 1997-09-09 | Asahi Chem Ind Co Ltd | 熱可塑性樹脂成形方法 |
| JP2000052403A (ja) | 1998-08-05 | 2000-02-22 | Japan Steel Works Ltd:The | 押出機用ストランドダイスおよび該ダイスの目やに防止方法 |
| JP2005111803A (ja) | 2003-10-07 | 2005-04-28 | Sekisui Chem Co Ltd | 目脂除去装置 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2610668C2 (de) * | 1976-03-13 | 1982-08-19 | Elbatainer Kunststoff- Und Verpackungsgesellschaft Mbh, 7505 Ettlingen | Vorrichtung zum Herstellen von Hohlkörpern aus thermoplastischem Kunststoff |
| JPS592528U (ja) * | 1982-06-28 | 1984-01-09 | 出光石油化学株式会社 | 樹脂押出成形用ダイ |
| BE1009344A3 (nl) * | 1995-04-12 | 1997-02-04 | Dyka Plastics Naamloze Vennoot | Mondstuk voor het extruderen van kunststof. |
| IE960898A1 (en) * | 1996-10-25 | 1998-05-06 | Menza Ltd | A method of and apparatus for blow-moulding |
| JP2000198136A (ja) * | 1999-01-07 | 2000-07-18 | Japan Steel Works Ltd:The | 中空成形機のクロスヘッド |
| DE10205210B4 (de) * | 2002-02-08 | 2004-02-19 | Egeplast Werner Strumann Gmbh & Co. Kg | Vorrichtung zur Herstellung von Kunststoffrohren |
| CN2875773Y (zh) | 2005-12-27 | 2007-03-07 | 朝日物产(天津)矿业有限公司 | 纵向彩色薄膜挤出机 |
| CN201064942Y (zh) | 2007-07-04 | 2008-05-28 | 汕头市新艺塑胶机械有限公司 | 中空吹塑模头 |
| CN201220477Y (zh) | 2008-03-28 | 2009-04-15 | 马镇鑫 | 一种新型塑料中空成型储料式模头 |
-
2010
- 2010-07-26 JP JP2010167215A patent/JP4998606B2/ja active Active
-
2011
- 2011-07-07 WO PCT/JP2011/003915 patent/WO2012014389A1/ja not_active Ceased
- 2011-07-07 KR KR1020137001891A patent/KR101444625B1/ko not_active Expired - Fee Related
- 2011-07-07 CN CN201180036033.6A patent/CN103052488B/zh not_active Expired - Fee Related
- 2011-07-07 US US13/808,797 patent/US8985992B2/en not_active Expired - Fee Related
- 2011-07-07 EP EP11811994.0A patent/EP2599609B1/en not_active Not-in-force
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5355687U (ja) * | 1976-10-14 | 1978-05-12 | ||
| JPH06190904A (ja) * | 1992-12-25 | 1994-07-12 | Ube Ind Ltd | ブロー成形用偏平ダイス |
| JPH06198705A (ja) * | 1993-01-05 | 1994-07-19 | Sekisui Chem Co Ltd | 押出成形用金型の製造方法 |
| JPH09234780A (ja) * | 1996-02-28 | 1997-09-09 | Asahi Chem Ind Co Ltd | 熱可塑性樹脂成形方法 |
| JP2000052403A (ja) | 1998-08-05 | 2000-02-22 | Japan Steel Works Ltd:The | 押出機用ストランドダイスおよび該ダイスの目やに防止方法 |
| JP2005111803A (ja) | 2003-10-07 | 2005-04-28 | Sekisui Chem Co Ltd | 目脂除去装置 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP2599609A4 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014127958A1 (de) * | 2013-02-21 | 2014-08-28 | Battenfeld-Cincinnati Germany Gmbh | Vorrichtung zur herstellung von kunststoffrohren |
| WO2014127959A1 (de) * | 2013-02-21 | 2014-08-28 | Battenfeld-Cincinnati Germany Gmbh | Vorrichtung zur herstellung von kunststoffrohren |
| CN105163924A (zh) * | 2013-02-21 | 2015-12-16 | 巴顿菲尔-辛辛那提德国有限公司 | 用于生产塑料管的装置 |
| US9969114B2 (en) | 2013-02-21 | 2018-05-15 | Battenfeld-Cincinnati Germany Gmbh | Device for producing plastic tubes |
| CN105163924B (zh) * | 2013-02-21 | 2018-11-09 | 巴顿菲尔-辛辛那提德国有限公司 | 用于生产塑料管的装置 |
| US10773442B2 (en) | 2013-02-21 | 2020-09-15 | Battenfeld-Cincinnati Germany Gmbh | Device for producing plastic pipes |
Also Published As
| Publication number | Publication date |
|---|---|
| US20130149406A1 (en) | 2013-06-13 |
| EP2599609A1 (en) | 2013-06-05 |
| JP2012025079A (ja) | 2012-02-09 |
| KR20130041920A (ko) | 2013-04-25 |
| EP2599609A4 (en) | 2015-05-27 |
| KR101444625B1 (ko) | 2014-09-26 |
| CN103052488A (zh) | 2013-04-17 |
| US8985992B2 (en) | 2015-03-24 |
| JP4998606B2 (ja) | 2012-08-15 |
| CN103052488B (zh) | 2015-05-27 |
| EP2599609B1 (en) | 2017-08-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4998606B2 (ja) | 押出ダイヘッド | |
| CN102202852B (zh) | 用于聚合物的挤出喷嘴 | |
| KR101196418B1 (ko) | 웨이퍼 연마용 리테이너 링 및 그 제조 방법 | |
| JP5808991B2 (ja) | タイヤ加硫金型 | |
| US20130153681A1 (en) | Rotary Atomizing Head For Electrostatic Coater | |
| JP2012025079A5 (ja) | ||
| CN212920459U (zh) | 一种防堵塞的3d打印喷嘴 | |
| JP5628556B2 (ja) | 押出機の口金 | |
| CN1129639C (zh) | 用聚丙烯给金属部件加衬的方法 | |
| JP2020037235A (ja) | 減圧チャンバー、キャスト冷却装置、樹脂シートの製造装置及び樹脂シートの製造方法 | |
| JP4848759B2 (ja) | 輪転印刷機のインキ汚れ防止方法 | |
| JP2012047938A (ja) | 塗布膜除去装置及び塗布膜除去方法 | |
| CN206372829U (zh) | 搅拌釜 | |
| JP3546875B2 (ja) | 電線被覆押出装置 | |
| JP2005013955A (ja) | マスキング治具、またはこれを用いたスプレー塗布方法 | |
| JP7076284B2 (ja) | 直液式アイライナー | |
| JP2007144817A (ja) | 無端ベルトの製造方法 | |
| CN212242238U (zh) | 一种碳棒挤出装置 | |
| JP2008256036A (ja) | ゴムローラの製造装置 | |
| JP4611461B2 (ja) | 外面樹脂被覆管の被膜形成方法 | |
| JP4693595B2 (ja) | 押出成形方法 | |
| WO2015041361A1 (ja) | 押出し成形装置 | |
| US20210053277A1 (en) | Shaping apparatus | |
| JPH11114095A (ja) | トリミング装置 | |
| JP2009090481A (ja) | 環状シームレス成形体の製造用金型、該金型を備えた環状シームレス成形体の製造装置、および該金型を用いた環状シームレス成形体の製造方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WWE | Wipo information: entry into national phase |
Ref document number: 201180036033.6 Country of ref document: CN |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11811994 Country of ref document: EP Kind code of ref document: A1 |
|
| REEP | Request for entry into the european phase |
Ref document number: 2011811994 Country of ref document: EP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2011811994 Country of ref document: EP |
|
| ENP | Entry into the national phase |
Ref document number: 20137001891 Country of ref document: KR Kind code of ref document: A |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 13808797 Country of ref document: US |