ES8100628A1 - Controlled coating of welded tube seams with polyethylene - using optical or contacting device to retard seam approach speed - Google Patents
Controlled coating of welded tube seams with polyethylene - using optical or contacting device to retard seam approach speedInfo
- Publication number
- ES8100628A1 ES8100628A1 ES80488048A ES488048A ES8100628A1 ES 8100628 A1 ES8100628 A1 ES 8100628A1 ES 80488048 A ES80488048 A ES 80488048A ES 488048 A ES488048 A ES 488048A ES 8100628 A1 ES8100628 A1 ES 8100628A1
- Authority
- ES
- Spain
- Prior art keywords
- coating
- optical
- thickness
- same
- welded
- 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
- 239000011248 coating agent Substances 0.000 title abstract 5
- 238000000576 coating method Methods 0.000 title abstract 5
- 239000004698 Polyethylene Substances 0.000 title 1
- 230000003287 optical effect Effects 0.000 title 1
- -1 polyethylene Polymers 0.000 title 1
- 229920000573 polyethylene Polymers 0.000 title 1
- 238000001125 extrusion Methods 0.000 abstract 2
- 230000003292 diminished effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000012815 thermoplastic material Substances 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 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
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/02—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material
- B29C63/04—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material by folding, winding, bending or the like
- B29C63/048—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material by folding, winding, bending or the like specially adapted for articles having local protrusions, e.g. tubes having a bead weld
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The speed of rotation of a welded tube is slowed down by an optical-magnetic device or by a contact, in a plant for coating tubes by the extrusion of a strip of thermoplastic material, so that the tension on the strip is diminished at the extrusion nozzle, and the thickness of the coating above the welded seam is the same as that on the same as that on the remainder of the outer surface of the tube. The additional thickness of the extruded strip corresponds to the point where the weld presents itself for the weld presents itself for the winding on, i.e. at the moment when the slowing down is commanded by the signal acting directly on the rollers driving the tube. Used to make possible the application of a coating of extruded material if minimal thickness on to the welded pipe, whilst ensuring at the same time that the zone covering the welded seam has the same thickness as the coating on the remainder of the circumference of the pipe.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7924795A FR2466325A1 (en) | 1979-10-02 | 1979-10-02 | Controlled coating of welded tube seams with polyethylene - using optical or contacting device to retard seam approach speed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES488048A0 ES488048A0 (en) | 1980-11-01 |
| ES8100628A1 true ES8100628A1 (en) | 1980-11-01 |
Family
ID=9230337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES80488048A Expired ES8100628A1 (en) | 1979-10-02 | 1980-01-26 | Controlled coating of welded tube seams with polyethylene - using optical or contacting device to retard seam approach speed |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE879326A (en) |
| DE (1) | DE3009912A1 (en) |
| ES (1) | ES8100628A1 (en) |
| FR (1) | FR2466325A1 (en) |
| IT (1) | IT1124366B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10056648B4 (en) * | 1999-11-12 | 2008-04-10 | Eupec Pipecoatings Gmbh | Method for wrapping a steel pipe and apparatus for carrying out the method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2700631A (en) * | 1951-07-05 | 1955-01-25 | Presstite Engineering Company | Method of providing articles with a plastic coating |
| NL162864C (en) * | 1974-02-12 | 1980-07-15 | Mannesmann Ag | METHOD AND APPARATUS FOR WRAPPING A STEEL TUBE WELDED WITH A THERMOPLASTIC PLASTIC |
-
1979
- 1979-10-02 FR FR7924795A patent/FR2466325A1/en active Granted
- 1979-10-10 BE BE0/197577A patent/BE879326A/en not_active IP Right Cessation
- 1979-11-29 IT IT12851/79A patent/IT1124366B/en active
-
1980
- 1980-01-26 ES ES80488048A patent/ES8100628A1/en not_active Expired
- 1980-03-14 DE DE19803009912 patent/DE3009912A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| ES488048A0 (en) | 1980-11-01 |
| FR2466325B1 (en) | 1983-07-18 |
| DE3009912A1 (en) | 1981-04-16 |
| FR2466325A1 (en) | 1981-04-10 |
| IT7912851A0 (en) | 1979-11-29 |
| IT1124366B (en) | 1986-05-07 |
| BE879326A (en) | 1980-02-01 |
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