GB1055668A - Improvements relating to the production of tubing - Google Patents
Improvements relating to the production of tubingInfo
- Publication number
- GB1055668A GB1055668A GB1076864A GB1076864A GB1055668A GB 1055668 A GB1055668 A GB 1055668A GB 1076864 A GB1076864 A GB 1076864A GB 1076864 A GB1076864 A GB 1076864A GB 1055668 A GB1055668 A GB 1055668A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tubing
- annular groove
- ducts
- duct
- 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
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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/0015—Making articles of indefinite length, e.g. corrugated tubes
- B29C49/0021—Making articles of indefinite length, e.g. corrugated tubes using moulds or mould parts movable in a closed path, e.g. mounted on movable endless supports
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
1,055,668. Extruding corrugated tubing. BAKER PERKINS GRANBULL Ltd. June 14, 1965 [March 13. 1964]. No. 10768/64. Heading B5A. Corrugated tubing is formed by extruding thermoplastic tubing, e.g. polythene tubing, over a mandrel 10, Fig. 1 (not shown), and expanding it into contact with internally corrugated interlocking mould parts moved at the speed of extrusion by two conveyers 15. The mandrel is provided with a series of ducts, Figs. 4, 5, for expansion fluid, e.g. compressed air, which comprise an inlet path via annular groove 29, ducts 28, axial duct 27 and four diverging ducts 31 to an annular groove 32, and a return path via an annular groove 38, four radial ducts 39, an annular groove 37, a duct 36 and an axial duct 35 formed in an extension 33 of mandrel 10. The axial distance between grooves 32 and 38 is somewhat greater than a corrugation wavelength so that each outward corrugation is effectively blown separately (see Fig. 4), excess air escaping downstream within the moulded tubing and upstream to groove 38 and subsequently downstream via duct, 35 through the moulded tubing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1076864A GB1055668A (en) | 1964-03-13 | 1964-03-13 | Improvements relating to the production of tubing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1076864A GB1055668A (en) | 1964-03-13 | 1964-03-13 | Improvements relating to the production of tubing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1055668A true GB1055668A (en) | 1967-01-18 |
Family
ID=9973897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1076864A Expired GB1055668A (en) | 1964-03-13 | 1964-03-13 | Improvements relating to the production of tubing |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1055668A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2061027A1 (en) * | 1970-12-11 | 1972-06-22 | Wilhelm Hegler | Device for the production of plastic pipes with transverse profiles |
| DE2366018A1 (en) * | 1972-07-25 | 1977-07-28 | Kagerer Eisen Kunststoff | PLASTIC PIPE |
| EP0067473A2 (en) * | 1981-06-15 | 1982-12-22 | Wavin B.V. | Apparatus for making profiled plastics tube |
-
1964
- 1964-03-13 GB GB1076864A patent/GB1055668A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2061027A1 (en) * | 1970-12-11 | 1972-06-22 | Wilhelm Hegler | Device for the production of plastic pipes with transverse profiles |
| DE2366018A1 (en) * | 1972-07-25 | 1977-07-28 | Kagerer Eisen Kunststoff | PLASTIC PIPE |
| EP0067473A2 (en) * | 1981-06-15 | 1982-12-22 | Wavin B.V. | Apparatus for making profiled plastics tube |
| EP0067473A3 (en) * | 1981-06-15 | 1986-09-17 | Wavin B.V. | Apparatus for making profiled plastics tube |
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