JPS5829211B2 - Manufacturing method of thermoplastic resin sheet - Google Patents
Manufacturing method of thermoplastic resin sheetInfo
- Publication number
- JPS5829211B2 JPS5829211B2 JP53103280A JP10328078A JPS5829211B2 JP S5829211 B2 JPS5829211 B2 JP S5829211B2 JP 53103280 A JP53103280 A JP 53103280A JP 10328078 A JP10328078 A JP 10328078A JP S5829211 B2 JPS5829211 B2 JP S5829211B2
- Authority
- JP
- Japan
- Prior art keywords
- thermoplastic resin
- sheet
- resin sheet
- manufacturing
- 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
Description
【発明の詳細な説明】
本発明は、補強用リブを有する薄肉で巾の広い熱可塑性
樹脂シートの製造法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a thin and wide thermoplastic resin sheet having reinforcing ribs.
熱可塑性樹脂シートの製造法としては、従来、押出機よ
り押出される溶融樹脂を押出機に付属するＴ型口金又は
環状口金を通して成形しシートとする製造方法がある。As a conventional method for producing a thermoplastic resin sheet, there is a method in which a molten resin extruded from an extruder is molded into a sheet through a T-shaped die or an annular die attached to the extruder.
前者は、Ｔ型口金の巾を広くすると、押出機の押出容量
の増加を図らねばならずシート成形時の肉厚の調節も困
難になる事から、製造設備費の増大及び製造工数の増加
の欠点がある。In the former case, increasing the width of the T-shaped nozzle requires increasing the extrusion capacity of the extruder and making it difficult to adjust the wall thickness during sheet forming, resulting in increased manufacturing equipment costs and increased manufacturing man-hours. There are drawbacks.
後者については、環状口金の径を大きくして巾広のシー
トを成形しようとすると、引取り操作が困難となる欠点
がある。Regarding the latter, if an attempt is made to mold a wide sheet by increasing the diameter of the annular cap, there is a drawback that the take-up operation becomes difficult.
本発明は上述の欠点を除去し、巾広のシートを容易に製
造することを目的とする。The present invention aims to eliminate the above-mentioned drawbacks and to facilitate the manufacture of wide sheets.
この目的を遠戚するために、本発明では、押出機より押
出した溶融状態の帯状熱可塑性樹脂を、その側部を重ね
合せて溶着しながら螺旋状に巻取り、冷却固化後切り開
いてシートとする方法を採用した。In order to achieve this objective distantly, in the present invention, a molten thermoplastic resin strip extruded from an extruder is spirally wound while overlapping its sides and welded, and after cooling and solidifying, it is cut open and made into a sheet. The method was adopted.
本発明によって、マンドレルの径に応じて巾広のシート
を容易に製造することができ、又、螺旋状に巻取った際
の重ね合せ部分が充分な強度をもつ補強体となる。According to the present invention, it is possible to easily manufacture a wide sheet according to the diameter of the mandrel, and the overlapping portion when wound spirally becomes a reinforcing body with sufficient strength.
以下図面によって本発明を説明する。The present invention will be explained below with reference to the drawings.
第１図、第２図に示すように、マンドレル１に押出機（
図示せず）より押出した溶融状態にある薄肉帯状熱可塑
性樹脂２を螺旋巻きする。As shown in Figures 1 and 2, the extruder (
A thin strip of thermoplastic resin 2 in a molten state extruded from a tube (not shown) is spirally wound.
この際、帯状熱可塑性樹脂２の側部を重ね合せ、該重ね
合せ部分に圧着ロール３を圧接して重ね合せ部分を溶着
し素形体４を成形する。At this time, the side portions of the thermoplastic resin strips 2 are overlapped, and the pressing roll 3 is pressed against the overlapping portion to weld the overlapping portion to form the blank body 4.
素形体４が冷却固化後、マンドレル１の軸方向に切り開
き第３図に示すような薄肉の熱可塑性樹脂シート５とす
る。After the green body 4 is cooled and solidified, the mandrel 1 is cut open in the axial direction to form a thin thermoplastic resin sheet 5 as shown in FIG.
熱可塑性樹脂シート５は、帯状熱可塑性樹脂２の重ね合
せ部分が補強用リブ６となっている。The thermoplastic resin sheet 5 has reinforcing ribs 6 at the overlapping portions of the thermoplastic resin strips 2 .
上述したように、本発明では、押出機より押出される溶
融状態の帯状熱可塑性樹脂の側部を重ね合せ溶融しなが
ら、マンドレルに螺旋状に巻取り、冷却固化後マンドレ
ル軸方向に切り開く事によりシートが製造され、マンド
レルの円周長さく円周率×マンドレル直径）がシートの
巾寸法となる為、従来のＴ型口金の巾の約りの径のマン
ドレルで対応できる。As described above, in the present invention, the sides of the molten thermoplastic resin belt extruded from an extruder are overlapped and melted, wound spirally around a mandrel, cooled and solidified, and then cut in the axial direction of the mandrel. When the sheet is manufactured, the width of the sheet is determined by the circumferential length of the mandrel (pi x mandrel diameter), so a mandrel with a diameter approximately equal to the width of a conventional T-shaped nozzle can be used.
特に広巾のシートを製造する場合、大規模な引取装置を
要することもない。Particularly when producing wide sheets, a large-scale take-up device is not required.
又本発明により製造されるシートは、従来のシートの製
造のごとくシートの両端部に発生する材料損失もなく、
帯状熱可塑性樹脂の側部を重ね合せる事により形成され
る補強用リブを有する為、機械的強度の優れたシートが
製造出来る。In addition, the sheet manufactured according to the present invention does not have material loss that occurs at both ends of the sheet as in conventional sheet manufacturing.
Since it has reinforcing ribs formed by overlapping the sides of the thermoplastic resin strips, a sheet with excellent mechanical strength can be manufactured.
第１図は本発明における製造状態を示す一部欠裁平面図
、第２図は第１図の側面図、第３図は本発明により製造
した熱可塑性樹脂シートの平面図である。
１はマンドレル、２は帯状熱可塑性樹脂、３は圧着ロー
ル、４は素形体、５は熱可塑性樹脂シート、６は補強用
リブ。FIG. 1 is a partially cutaway plan view showing the state of manufacture according to the present invention, FIG. 2 is a side view of FIG. 1, and FIG. 3 is a plan view of a thermoplastic resin sheet manufactured according to the present invention. 1 is a mandrel, 2 is a belt-shaped thermoplastic resin, 3 is a pressure roll, 4 is a basic body, 5 is a thermoplastic resin sheet, and 6 is a reinforcing rib.
Claims (1)
重ね合せ溶着しながらマンドレルに螺旋巻きし、冷却固
化後切り開くことを特徴とする熱可塑性樹脂シートの製
造法。1. A method for producing a thermoplastic resin sheet, which comprises spirally winding a thermoplastic resin strip extruded from an extruder around a mandrel while overlapping and welding its sides, and cutting it open after cooling and solidifying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53103280A JPS5829211B2 (en) | 1978-08-24 | 1978-08-24 | Manufacturing method of thermoplastic resin sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53103280A JPS5829211B2 (en) | 1978-08-24 | 1978-08-24 | Manufacturing method of thermoplastic resin sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5528878A JPS5528878A (en) | 1980-02-29 |
| JPS5829211B2 true JPS5829211B2 (en) | 1983-06-21 |
Family
ID=14349925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53103280A Expired JPS5829211B2 (en) | 1978-08-24 | 1978-08-24 | Manufacturing method of thermoplastic resin sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5829211B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5875519U (en) * | 1981-11-17 | 1983-05-21 | 三菱農機株式会社 | Sensor mechanism of seedling exhaustion warning device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54103251A (en) * | 1978-01-31 | 1979-08-14 | Shin Kobe Electric Machinery | Method of fabricating rotary disk for waste liquid treating device |
-
1978
- 1978-08-24 JP JP53103280A patent/JPS5829211B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5875519U (en) * | 1981-11-17 | 1983-05-21 | 三菱農機株式会社 | Sensor mechanism of seedling exhaustion warning device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5528878A (en) | 1980-02-29 |
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