GB1412651A - Plastics pipes - Google Patents
Plastics pipesInfo
- Publication number
- GB1412651A GB1412651A GB4803072A GB4803072A GB1412651A GB 1412651 A GB1412651 A GB 1412651A GB 4803072 A GB4803072 A GB 4803072A GB 4803072 A GB4803072 A GB 4803072A GB 1412651 A GB1412651 A GB 1412651A
- Authority
- GB
- United Kingdom
- Prior art keywords
- separating means
- corrugations
- inner tube
- oct
- pressure medium
- 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
- 229920003023 plastic Polymers 0.000 title 1
- 239000004033 plastic Substances 0.000 title 1
- 229920000114 Corrugated plastic Polymers 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/12—Rigid pipes of plastics with or without reinforcement
- F16L9/127—Rigid pipes of plastics with or without reinforcement the walls consisting of a single layer
-
- 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
-
- 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
-
- 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
- B29L2023/003—Tubular articles having irregular or rough surfaces
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- General Engineering & Computer Science (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
1412651 Moulding double walled pipes INDUSTRIELE ONDERNEMING WAVIN NV 18 Oct 1972 [22 Oct 1971] 48030/72 Heading B5A [Also in Division F2] A corrugated plastics pipe comprises an outer circumferentially corrugated tube 1 and a smooth inner tube 2, the bottoms 9 of the corrugations being joined to the inner tube but not over the whole circumference thereof, leaving passages 10 between consecutive corrugations. In the embodiment described extruded PVC tubes 1, 2 are passed between die halves 5 and a supporting cylinder 7 with a pressure medium supply duct 3 and separating means 4 located between the two tubes. The separating means 4 is provided with pressure medium outlet openings at positions corresponding to the corrugation forming recesses 8 in the die half 5 which has a longitudinal recess (13) (Fig. 4, not shown) to accommodate the separating means. After formation of the corrugations and joining of the outer to the inner tube the die halves, support 7 and separating means 4 move back towards the extruder (Fig. 2, not shown) and the operation is repeated.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7114597A NL7114597A (en) | 1971-10-22 | 1971-10-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1412651A true GB1412651A (en) | 1975-11-05 |
Family
ID=19814319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4803072A Expired GB1412651A (en) | 1971-10-22 | 1972-10-18 | Plastics pipes |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB1412651A (en) |
| NL (1) | NL7114597A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2362715A1 (en) * | 1976-08-24 | 1978-03-24 | Hegler Wilhelm | METHOD OF MANUFACTURING TUBES IN PLASTIC MATERIAL WITH DOUBLE WALL AND TUBE CARRIED OUT ACCORDING TO THIS PROCEDURE |
| WO2004094888A1 (en) * | 2003-04-24 | 2004-11-04 | Drossbach Gmbh & Co. Kg | Double-walled corrugated pipe |
-
1971
- 1971-10-22 NL NL7114597A patent/NL7114597A/xx unknown
-
1972
- 1972-10-18 GB GB4803072A patent/GB1412651A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2362715A1 (en) * | 1976-08-24 | 1978-03-24 | Hegler Wilhelm | METHOD OF MANUFACTURING TUBES IN PLASTIC MATERIAL WITH DOUBLE WALL AND TUBE CARRIED OUT ACCORDING TO THIS PROCEDURE |
| WO2004094888A1 (en) * | 2003-04-24 | 2004-11-04 | Drossbach Gmbh & Co. Kg | Double-walled corrugated pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| NL7114597A (en) | 1973-04-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |