CA2019967A1 - Improved pipe lining product, process and apparatus - Google Patents
Improved pipe lining product, process and apparatusInfo
- Publication number
- CA2019967A1 CA2019967A1 CA 2019967 CA2019967A CA2019967A1 CA 2019967 A1 CA2019967 A1 CA 2019967A1 CA 2019967 CA2019967 CA 2019967 CA 2019967 A CA2019967 A CA 2019967A CA 2019967 A1 CA2019967 A1 CA 2019967A1
- Authority
- CA
- Canada
- Prior art keywords
- pipe
- liner
- lining
- temperature
- reheated
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title abstract 2
- 238000002425 crystallisation Methods 0.000 abstract 2
- 230000008025 crystallization Effects 0.000 abstract 2
- 238000003780 insertion Methods 0.000 abstract 1
- 230000037431 insertion Effects 0.000 abstract 1
- 229920001169 thermoplastic Polymers 0.000 abstract 1
- 239000004416 thermosoftening plastic Substances 0.000 abstract 1
Landscapes
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Method and apparatus are provided for lining a pipe wherein a thermoplastic liner is initially formed in a cylindrical shape with a diameter slightly larger than the internal diameter of the pipe. The liner is temporarily deformed at an elevated temperature to a different cross-section, preferably U-shaped, to reduce its overall cross-sectional dimension to facilitate insertion into the pipe to be lined. The deformation occurs with substantially comparable elongation of the pipe lining along its opposite sides thereby precluding variations in wall thickness and stress in the pipe.
Once inserted, the liner is pressurized and reheated first to a temperature below its crystallization temperature to round the lining in the pipe and subsequently, further pressurized and reheated to a second temperature higher than the crystallization temperature to cause the liner to retain its original round shape.
Once inserted, the liner is pressurized and reheated first to a temperature below its crystallization temperature to round the lining in the pipe and subsequently, further pressurized and reheated to a second temperature higher than the crystallization temperature to cause the liner to retain its original round shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2019967 CA2019967C (en) | 1990-06-26 | 1990-06-26 | Improved pipe lining product, process and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2019967 CA2019967C (en) | 1990-06-26 | 1990-06-26 | Improved pipe lining product, process and apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2019967A1 true CA2019967A1 (en) | 1991-12-26 |
| CA2019967C CA2019967C (en) | 2004-04-27 |
Family
ID=4145352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2019967 Expired - Fee Related CA2019967C (en) | 1990-06-26 | 1990-06-26 | Improved pipe lining product, process and apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2019967C (en) |
-
1990
- 1990-06-26 CA CA 2019967 patent/CA2019967C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2019967C (en) | 2004-04-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4113813A (en) | Method of preparing and belling thermoplastic pipe with thickened walls | |
| JPS6440121A (en) | Method of molding box-shaped frame member | |
| US3372462A (en) | Method of making plastic lined metal pipe | |
| CA1193063A (en) | Process for the preparation of shaped articles | |
| GR3018275T3 (en) | Pipeline connection and method of manufacturing pipeline connections made of polyolefine. | |
| CA2483113A1 (en) | Process for cold forming tube ends | |
| CA2237857A1 (en) | Method and apparatus of manufacturing synchronous drive belt with teeth which are axially interlocked with a mold surface | |
| DE3174718D1 (en) | Method of making pipe unions | |
| CA2019967A1 (en) | Improved pipe lining product, process and apparatus | |
| WO1997020677A3 (en) | Method of manufacturing containers | |
| EP0226410A2 (en) | Method of making a plastic-lined pipe | |
| JPS5611119A (en) | Manufacture of stepped hollow shaft | |
| ES455967A1 (en) | Ammunition cartidges and method of manufacturing same | |
| GR3036748T3 (en) | A method of socketing a pipe | |
| PT91157A (en) | Process for the production of a steel strip with a thickness of less than 10 mm | |
| CA2401059A1 (en) | Aluminum extrusion material for hydraulic bulge forming and hydraulic bulge forming method using the extrusion material | |
| US4584170A (en) | Method of making pipes by powder metallurgy and pipe blanks (semi-finished products) made in accordance therewith | |
| IE790069L (en) | Heat-recoverable metallic coupling member | |
| ES444908A1 (en) | Method for producing an outer shell for overrunning clutches | |
| JPS56146738A (en) | Bottle of polyester and manufacture thereof | |
| JPS56121988A (en) | Manufacture of heat pipe | |
| JPS55117515A (en) | Manufacture of double-ply pipe | |
| JPS57195591A (en) | Production of clad pipe | |
| JPS57152327A (en) | Joining method for square cylindrical tube | |
| JPH0515763B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |