JPS6360707B2 - - Google Patents
Info
- Publication number
- JPS6360707B2 JPS6360707B2 JP56048681A JP4868181A JPS6360707B2 JP S6360707 B2 JPS6360707 B2 JP S6360707B2 JP 56048681 A JP56048681 A JP 56048681A JP 4868181 A JP4868181 A JP 4868181A JP S6360707 B2 JPS6360707 B2 JP S6360707B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- coating agent
- coating
- thickness
- mandrel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000011248 coating agent Substances 0.000 claims description 36
- 238000000576 coating method Methods 0.000 claims description 11
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 description 7
- 239000003973 paint Substances 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 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
- B29C48/16—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
- B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
-
- 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
- B29C48/0013—Extrusion moulding in several steps, i.e. components merging outside the die
- B29C48/0015—Extrusion moulding in several steps, i.e. components merging outside the die producing hollow articles having components brought in contact outside the extrusion die
- B29C48/0016—Extrusion moulding in several steps, i.e. components merging outside the die producing hollow articles having components brought in contact outside the extrusion die using a plurality of extrusion 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
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92609—Dimensions
- B29C2948/92647—Thickness
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92904—Die; Nozzle zone
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Coating Apparatus (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
本発明は、塗料、接着剤等の塗布剤を内面に塗
布したプラスチツクチユーブを製造する方法に関
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a plastic tube whose inner surface is coated with a coating agent such as a paint or an adhesive.
以下本発明を添付図面に従つて詳細に説明す
る。 The present invention will be described in detail below with reference to the accompanying drawings.
第１図は本発明を実施するための装置の一例を
示す正面断面図、第２図は同じく他の例の塗布剤
口付近を示す正面断面図である。 FIG. 1 is a front sectional view showing an example of an apparatus for implementing the present invention, and FIG. 2 is a front sectional view showing the vicinity of the coating agent opening of another example.
本発明は、第１図において溶融プラスチツクを
チユーブ押出機１から押出してチユーブ２とな
し、このチユーブ２を押出機先端に延設された内
径規制マンドレル３の外面に接触させて冷却・固
化させ、次にマンドレル３の外周に設けた塗布剤
口４からチユーブ内面に塗布剤５を塗布し、続い
て塗布剤口４に連続して設けた厚み調整部６の外
面とチユーブ内面との間隙７により塗膜の厚さを
規制しながら引き取ることを特徴とする内面塗布
チユーブの製造方法である。 In the present invention, as shown in FIG. 1, molten plastic is extruded from a tube extruder 1 to form a tube 2, and this tube 2 is brought into contact with the outer surface of an inner diameter regulating mandrel 3 extended at the tip of the extruder to cool and solidify it. Next, the coating agent 5 is applied to the inner surface of the tube from the coating agent port 4 provided on the outer periphery of the mandrel 3, and then the coating agent 5 is applied to the inner surface of the tube through the gap 7 between the outer surface of the thickness adjustment part 6 provided continuously to the coating agent port 4 and the inner surface of the tube. This is a method for manufacturing an inner-coated tube, which is characterized in that the thickness of the coating film is controlled while being removed.
本発明のチユーブを形成するプラスチツクとし
ては、ポリ塩化ビニル、ポリエチレンテレフタレ
ート、ポリアミドなど適宜である。これらのプラ
スチツクは図示していないスクリユー式押出装置
等により加熱溶融された状態でチユーブ押出機１
から押出されチユーブ２を形成するが、この押出
機１を貫通して各種装置をチユーブ２内部に配設
させるために第１図に示すようなクロスヘツドダ
イを用いるのが好ましい。 Plastics for forming the tube of the present invention include polyvinyl chloride, polyethylene terephthalate, polyamide, and the like. These plastics are heated and melted by a screw type extrusion device (not shown), etc., and then transferred to a tube extruder 1.
A crosshead die as shown in FIG. 1 is preferably used to penetrate the extruder 1 and arrange various devices inside the tube 2.
このチユーブ２を下方に引き取ると径が縮少し
てマンドレル３の冷却部３１の外面に接触し、冷
却固化されて内径が規制された状態で下方に進行
する。ここで冷却部３１はマンドレル内部に配設
された冷却水管３２により冷却されている。 When the tube 2 is pulled downward, its diameter is reduced and it comes into contact with the outer surface of the cooling part 31 of the mandrel 3, where it is cooled and solidified and advances downward with its inner diameter regulated. Here, the cooling section 31 is cooled by a cooling water pipe 32 disposed inside the mandrel.
次にチユーブ２は、冷却部３１に続いてマンド
レル外周に設けられたリング状の塗布剤口４の外
面を通過し、その際塗布剤５がチユーブ内面に塗
布される。塗布剤５は、チユーブ押出機およびマ
ンドレルを貫通して配設された塗布剤管５１を通
じて、外部の塗布剤タンク５２から供給される。
ここで塗布剤口４としては第２図に示すように、
リング状の塗布剤口４の下部外周に立ち上り壁４
１を設けて、塗布剤５が立ち上り壁をオーバーフ
ローしてチユーブ２内面に塗布されるようになつ
ていてもよい。また、立ち上り壁４１の一部に切
り欠き部（図示せず）を設け、この切り欠き部の
みから塗布剤５がオーバーフローしてチユーブ内
面に部分的に塗布されるようにしておき、進行す
るチユーブ内面に、縞状に塗布することもでき
る。第２図の例では、塗布剤口上部に形成される
空間４２の気体の弾性により塗布剤５の増減が吸
収されて塗布厚みの変動が少ないという効果があ
る。この空間４２の大きさを調整するために空気
抜管４３を設けても良い。 Next, the tube 2 passes through the outer surface of a ring-shaped coating agent opening 4 provided on the outer periphery of the mandrel following the cooling section 31, and at this time, the coating agent 5 is applied to the inner surface of the tube. The coating agent 5 is supplied from an external coating agent tank 52 through a coating agent tube 51 disposed through the tube extruder and mandrel.
Here, as the coating agent port 4, as shown in FIG.
A rising wall 4 is formed on the outer periphery of the lower part of the ring-shaped applicator opening 4.
1 may be provided so that the coating agent 5 overflows the rising wall and is applied to the inner surface of the tube 2. Further, a notch (not shown) is provided in a part of the rising wall 41 so that the coating agent 5 overflows only from this notch and is partially applied to the inner surface of the tube. It can also be applied in stripes to the inner surface. In the example shown in FIG. 2, the increase or decrease in the coating agent 5 is absorbed by the elasticity of the gas in the space 42 formed above the coating agent mouth, so that there is an effect that fluctuations in the coating thickness are small. An air vent pipe 43 may be provided to adjust the size of this space 42.
内面に塗布されたチユーブ２は、引き続き厚み
調整部６の外周を通過して、この厚み調整部６の
外周面とチユーブ２の内面とが形成する間隙７に
よつて塗布剤５の厚さが規制される。厚み調整部
６は前記冷却部３１よりわずかに小さい外径を有
しており、冷却部３１において冷却固化され、冷
却部３１の外径に内径規制されたチユーブ内面と
の間にわずかな間隙を保つて摺動することによ
り、塗布剤の厚さを規制することができる。塗
布、厚さ調整の段階では、チユーブ２は既に冷
却・固化されているので塗布圧力等により変形す
ることがなく、正確な厚さ調整ができる。 The tube 2 coated on the inner surface continues to pass through the outer periphery of the thickness adjusting section 6, and the thickness of the coating agent 5 is adjusted by the gap 7 formed between the outer circumferential surface of the thickness adjusting section 6 and the inner surface of the tube 2. Regulated. The thickness adjusting part 6 has an outer diameter slightly smaller than the cooling part 31, is cooled and solidified in the cooling part 31, and has a slight gap between it and the inner surface of the tube whose inner diameter is regulated by the outer diameter of the cooling part 31. By holding and sliding, the thickness of the coating material can be regulated. At the stage of coating and adjusting the thickness, the tube 2 has already been cooled and solidified, so it will not be deformed by the coating pressure, etc., and the thickness can be adjusted accurately.
このようにして内面塗布チユーブ２が得られる
が、塗布剤５が溶剤を含む塗料の場合等には、引
き続いてチユーブ内面の塗膜を乾燥するのが好ま
しい。乾燥方法としてはたとえば第１図に示すよ
うに、マンドレル３を貫通して配設された送風管
８の先端から矢印８１のように送風して塗膜中の
溶剤等を除去乾燥することができる。溶剤等を含
んだ空気は、マンドレル中に送風管８と並設され
た排気管８２を通つて外部に排出することができ
る。 In this way, the inner surface coating tube 2 is obtained, but if the coating agent 5 is a paint containing a solvent, it is preferable to subsequently dry the coating film on the inner surface of the tube. As a drying method, for example, as shown in FIG. 1, the solvent and the like in the coating film can be removed and dried by blowing air from the tip of an air pipe 8 provided through the mandrel 3 in the direction of an arrow 81. . The air containing the solvent and the like can be discharged to the outside through an exhaust pipe 82 arranged in parallel with the blower pipe 8 in the mandrel.
得られた内面塗布チユーブは引き続きニツプロ
ール（図示せず）等により引き取つて、巻き取る
ことができる。 The resulting inner-coated tube can then be taken up and rolled up using a nip roll (not shown) or the like.
以上、詳述したように本発明の内面塗布チユー
ブの製造方法によれば、プラスチツクの製造工程
の中で内面に塗料等を塗布することができ、しか
も冷却・固化後のチユーブ内面と厚み調整部外面
とが形成する間隙により正確な厚さの塗膜が得ら
れる。 As described in detail above, according to the manufacturing method of the inner surface coated tube of the present invention, paint etc. can be applied to the inner surface during the plastic manufacturing process, and the inner surface of the tube and the thickness adjustment portion after cooling and solidification can be coated. The gap formed between the outer surface and the outer surface allows a coating film of accurate thickness to be obtained.
第１図は本発明を実施するための装置の一例を
示す正面断面図、第２図は同じく他の例の塗布剤
口付近を示す正面断面図である。
１……チユーブ押出機、２……チユーブ、３…
…内径規制マンドレル、４……塗布剤口、５……
塗布剤、６……厚み調整部、７……間隙。
FIG. 1 is a front sectional view showing an example of an apparatus for implementing the present invention, and FIG. 2 is a front sectional view showing the vicinity of the coating agent opening of another example. 1...tube extruder, 2...tube, 3...
...Inner diameter regulating mandrel, 4...Applying agent port, 5...
Coating agent, 6... Thickness adjustment section, 7... Gap.
Claims (1)
してチユーブとなし、このチユーブを押出機先端
に延設された内径規制マンドレルの外面に接触さ
せて冷却・固化させ、次に前記マンドレル外周に
設けた塗布剤口からチユーブ内面に塗布剤を塗布
し、続いて前記塗布剤口に連続して設けた厚み調
整部の外面とチユーブ内面との間隙により塗膜の
厚さを規制しながら引き取ることを特徴とする内
面塗布チユーブの製造方法。1. Molten plastic is extruded from a tube extruder to form a tube, and this tube is brought into contact with the outer surface of an inner diameter regulating mandrel installed at the tip of the extruder to cool and solidify, and then a coating agent port provided on the outer periphery of the mandrel is A coating agent is applied to the inner surface of the tube from the coating agent opening, and then the thickness of the coating film is regulated by a gap between the outer surface of a thickness adjusting section provided continuously at the coating agent port and the inner surface of the tube, and the coating agent is removed. Method of manufacturing coating tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56048681A JPS57163539A (en) | 1981-04-01 | 1981-04-01 | Manufacture of tube with coated inside surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56048681A JPS57163539A (en) | 1981-04-01 | 1981-04-01 | Manufacture of tube with coated inside surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57163539A JPS57163539A (en) | 1982-10-07 |
| JPS6360707B2 true JPS6360707B2 (en) | 1988-11-25 |
Family
ID=12810056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56048681A Granted JPS57163539A (en) | 1981-04-01 | 1981-04-01 | Manufacture of tube with coated inside surface |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57163539A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4636399B2 (en) * | 2001-03-26 | 2011-02-23 | 高浜工業株式会社 | Extrusion molding method and apparatus thereof |
| EP2070682A1 (en) * | 2007-12-13 | 2009-06-17 | Philip Morris Products S.A. | Process for the production of a cylindrical article |
-
1981
- 1981-04-01 JP JP56048681A patent/JPS57163539A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57163539A (en) | 1982-10-07 |
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