JPS6157186B2 - - Google Patents
Info
- Publication number
- JPS6157186B2 JPS6157186B2 JP53124481A JP12448178A JPS6157186B2 JP S6157186 B2 JPS6157186 B2 JP S6157186B2 JP 53124481 A JP53124481 A JP 53124481A JP 12448178 A JP12448178 A JP 12448178A JP S6157186 B2 JPS6157186 B2 JP S6157186B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- temperature
- embossed
- embossing
- heat
- 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
- 238000004049 embossing Methods 0.000 claims description 12
- 230000007704 transition Effects 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000003825 pressing Methods 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003746 surface roughness 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
- B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
- B29C61/06—Making preforms having internal stresses, e.g. plastic memory
- B29C61/08—Making preforms having internal stresses, e.g. plastic memory by stretching tubes
-
- 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
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
- B29C59/04—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts
-
- 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
- B29K2995/0037—Other properties
- B29K2995/0049—Heat shrinkable
-
- 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
- B29K2995/0037—Other properties
- B29K2995/005—Oriented
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/001—Tubular films, sleeves
Description
【発明の詳細な説明】
本発明は、加熱収縮しても消えにくいエンボス
模様をもつ熱収縮性チユーブの製造方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a heat-shrinkable tube having an embossed pattern that does not disappear even when heat-shrinked.
従来からエンボス模様をもつテープ、フイルム
等は、そのすぐれた外観、表面まさつ等により自
転車のハンドル部分、あるいは買物用車の把手部
等の表面被覆に多く使用されている。 Conventionally, tapes, films, and the like having embossed patterns have been widely used to cover the surfaces of bicycle handles, shopping cart handles, etc. due to their excellent appearance and surface roughness.
しかしながら、把手部分等は特殊な形状（わん
曲）をしているので、エンボス模様を持つ未延伸
又は延伸フラツトフイルムを細幅にスリツトした
エンボステープを把手部等に巻き付けるだけでは
使用中その巻きがずれて来る等の欠点があり、な
おかつテープの巻き付けに多くの工数がかかると
いう欠点があつた。 However, since the handle part has a special shape (curved), it is not possible to wrap the embossed tape, which is made by slitting unstretched or stretched flat film with an embossed pattern into narrow widths, around the handle part during use. There were disadvantages such as the tape slipping, and it took a lot of man-hours to wind the tape.
そのため、エンボス模様をもつ熱収縮性チユー
ブの出現が待たれていたが、従来の上記チユーブ
の製法としては、内表面にエンボス模様を施した
円筒内に未延伸チユーブを挿入し、チユーブを加
熱膨張（延伸）すると同時に当該チユーブの外表
面にエンボス模様を型押し（以下「エンボス加
工」という。）するか、又は延伸された後のチユ
ーブ外表面を加熱してエンボスロール等でエンボ
ス加工していた。 Therefore, the emergence of a heat-shrinkable tube with an embossed pattern has been awaited, but the conventional manufacturing method for the above tube is to insert an unstretched tube into a cylinder with an embossed pattern on the inner surface, and then heat and expand the tube. At the same time as (stretching), an embossed pattern was embossed on the outer surface of the tube (hereinafter referred to as "embossing"), or the outer surface of the tube after being stretched was heated and embossed with an embossing roll etc. .
しかしながら、前者は延伸温度とエンボス加工
の温度が同じため、該チユーブを加熱収縮させる
とエンボス模様が消えやすいという欠点があり、
また後者はエンボス加工時の熱でチユーブが収縮
するという欠点があつた。 However, the former has the disadvantage that the embossed pattern tends to disappear when the tube is heated and shrunk because the stretching temperature and embossing temperature are the same.
The latter also had the disadvantage that the tube would shrink due to the heat during embossing.
本発明は、上記の欠点を改良したものであり、
その要旨とするところは、環状口金から溶融押出
しされたチユーブを、一旦冷却固化した後、表面
温度が該チユーブの溶融点以下二次転移点以上に
維持されているエンボスロールの表面に前記チユ
ーブを押圧してチユーブ外表面にエンボス模様を
付した後、前記の押圧温度未満、二次転移点以上
の温度で延伸することを特徴とする熱収縮性チユ
ーブの製造方法である。 The present invention improves the above drawbacks, and
The gist of this is that after the tube is melt-extruded from an annular die and once cooled and solidified, the tube is placed on the surface of an embossing roll whose surface temperature is maintained below the melting point of the tube and above the secondary transition point. This is a method for producing a heat-shrinkable tube, which comprises pressing to form an embossed pattern on the outer surface of the tube, and then stretching at a temperature below the above-mentioned pressing temperature and above the secondary transition point.
以下添付の図面に基ずき詳細に説明する。第１
図は本発明に係わる製造装置の断面図である。押
出機１に連続する環状口金２から溶融押出しされ
たチユーブ３は、冷却水槽４にて一旦冷却固化さ
れ、ついで表面温度が該チユーブの溶融点以下二
次転移点以上に維持され、かつ表面にエンボス模
様（図面では省略）をもち、矢印Ａ方向に回転し
ている一対のエンボスロール５内を押圧されなが
ら通過して該チユーブ３の表面にエンボス加工さ
れて引き取られ、延伸部Ｂにおいて押圧温度より
も低く、二次転移点以上の温度で延伸され、一対
のニツプロール６で引き取られる。 A detailed description will be given below based on the attached drawings. 1st
The figure is a sectional view of a manufacturing apparatus according to the present invention. The tube 3 melted and extruded from the annular die 2 connected to the extruder 1 is once cooled and solidified in a cooling water tank 4, and then the surface temperature is maintained below the melting point of the tube and above the secondary transition point, and the surface temperature is It has an embossed pattern (omitted in the drawing), passes through a pair of embossing rolls 5 rotating in the direction of arrow A while being pressed, is embossed on the surface of the tube 3, is taken out, and is drawn at the pressing temperature in the stretching section B. The film is stretched at a temperature lower than that of the second order transition point or higher, and taken off by a pair of nip rolls 6.
本発明によればチユーブ３を一対のエンボスロ
ール５でニツプしながらチユーブ外表面にエンボ
ス加工するのであるが、チユーブ３が一旦冷却固
化されているため、エンボス加工時の熱がチユー
ブ内面に届きにくいので、エンボス加工の温度あ
るいは押圧力を大きくしてもチユーブ内面同士が
溶着することがない。 According to the present invention, the outer surface of the tube 3 is embossed while being nipped between a pair of embossing rolls 5, but since the tube 3 is once cooled and solidified, the heat during embossing is difficult to reach the inner surface of the tube. Therefore, even if the embossing temperature or pressing force is increased, the inner surfaces of the tubes will not weld together.
その結果、エンボス加工の温度、押圧力を高く
とることができ、消えにくいエンボス模様をチユ
ーブ外表面に付与することができる。 As a result, the embossing temperature and pressing force can be increased, and an embossed pattern that is difficult to erase can be applied to the outer surface of the tube.
また、エンボス加工した該チユーブを二次転移
点以上押圧温度より低い温度で延伸するのでチユ
ーブ外表面のエンボス模様は延伸時の加熱でエン
ボスが消えることはなく、かつまた得られたエン
ボスチユーブは加熱収縮時にエンボスが消えにく
い。 In addition, since the embossed tube is stretched at a temperature higher than the secondary transition point and lower than the pressing temperature, the embossed pattern on the outer surface of the tube will not disappear due to heating during stretching, and the embossed tube obtained will not disappear when heated during stretching. Emboss does not easily disappear when shrinking.
したがつて、わん曲部分等にこのエンボスチユ
ーブをかぶせ、加熱収縮させてやれば容易に該部
分にエンボスチユーブを付着することができるの
でその効果は著しく大きい。 Therefore, if the embossed tube is placed over a curved portion or the like and heat-shrinked, the embossed tube can be easily attached to the curved portion, which is extremely effective.
第１図は、本発明に係わる製造装置の正面断面
図である。
１は押出機、２は環状口金、３はチユーブ、４
は冷却水槽、５はエンボスロール、Ｂは延伸部で
ある。
FIG. 1 is a front sectional view of a manufacturing apparatus according to the present invention. 1 is an extruder, 2 is an annular die, 3 is a tube, 4
5 is a cooling water tank, 5 is an embossing roll, and B is a stretching section.
Claims (1)
一旦冷却固化した後、表面温度が該チユーブの溶
融点以下二次転移点以上に維持されているエンボ
スロールの表面に前記チユーブを押圧して、チユ
ーブ外表面にエンボス模様を付した後前記の押圧
温度未満二次転移点以上の温度で延伸することを
特徴とする熱収縮性チユーブの製造方法。1 The tube melted and extruded from the annular die,
Once cooled and solidified, the tube is pressed against the surface of an embossing roll whose surface temperature is maintained at a temperature lower than the melting point of the tube and higher than the secondary transition point to form an embossed pattern on the outer surface of the tube. 1. A method for producing a heat-shrinkable tube, which comprises stretching at a temperature below the secondary transition point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12448178A JPS5551521A (en) | 1978-10-09 | 1978-10-09 | Preparation of thermoshrinking embossed tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12448178A JPS5551521A (en) | 1978-10-09 | 1978-10-09 | Preparation of thermoshrinking embossed tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5551521A JPS5551521A (en) | 1980-04-15 |
| JPS6157186B2 true JPS6157186B2 (en) | 1986-12-05 |
Family
ID=14886579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12448178A Granted JPS5551521A (en) | 1978-10-09 | 1978-10-09 | Preparation of thermoshrinking embossed tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5551521A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55164128A (en) * | 1979-06-09 | 1980-12-20 | Sagami Gomme Kogyo Kk | Method of protecting thermal contraction tube or film against deformation due to natural contraction |
| JPS56111627A (en) * | 1980-02-09 | 1981-09-03 | C I Kasei Co Ltd | Production of thermo-shrinkable matt film |
| ZA976046B (en) * | 1996-09-13 | 1998-02-03 | Courtaulds Packaging Inc | Flexible tube decorative method. |
| NL1033244C2 (en) * | 2007-01-17 | 2008-07-18 | Fuji Seal Europe Bv | Device for manufacturing sleeve-shaped foil envelopes from a strip of sleeve-like foil material. |
-
1978
- 1978-10-09 JP JP12448178A patent/JPS5551521A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5551521A (en) | 1980-04-15 |
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