IT1186516B - Mfr. of plastics pipe impermeable to oxygen gas - Google Patents
Mfr. of plastics pipe impermeable to oxygen gasInfo
- Publication number
- IT1186516B IT1186516B IT23412/85A IT2341285A IT1186516B IT 1186516 B IT1186516 B IT 1186516B IT 23412/85 A IT23412/85 A IT 23412/85A IT 2341285 A IT2341285 A IT 2341285A IT 1186516 B IT1186516 B IT 1186516B
- Authority
- IT
- Italy
- Prior art keywords
- layer
- partic
- microns thick
- plastics pipe
- mfr
- Prior art date
Links
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 title 1
- 229910001882 dioxygen Inorganic materials 0.000 title 1
- 229920003023 plastic Polymers 0.000 title 1
- 239000004033 plastic Substances 0.000 title 1
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 abstract 2
- 239000004743 Polypropylene Substances 0.000 abstract 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 239000003000 extruded plastic Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- -1 polypropylene Polymers 0.000 abstract 1
- 229920001155 polypropylene Polymers 0.000 abstract 1
- 239000005033 polyvinylidene chloride Substances 0.000 abstract 1
- 239000001294 propane Substances 0.000 abstract 1
- 239000007921 spray Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 230000003746 surface roughness Effects 0.000 abstract 1
Landscapes
- Laminated Bodies (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
Abstract
At least outer surface of an extruded plastics pipe (I) is subjected to thermal oxidation so that, in at least outermost layer, polymer chains are broken to increase surface roughness, then (I) is cooled, layer of paint-like substance (II) is applied to treated surface and distributed uniformly over circumference of (I), then (II) layer is hardened and/or dried. Pref. (I) is of polypropylene. (II) is PVDC. Layer of (II) is about 50 microns thick. (I) is treated with gas flame, partic. of propane, partic. to above 70 deg.C. After being heated, (I) is cooled, partic. to about 40 deg.C. After application of (II), (I) is predried at 75-80 deg.C. (II) is applied by spray nozzles distributed around (I) circumference. (I) is passed at about 4m./minute through work stations of process. Second layer of a (II) is applied after drying. (II) layer is up to 50 microns thick, or first (II) layer is max. 10 microns and second (II) layer is max. 100 microns thick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT23412/85A IT1186516B (en) | 1985-12-31 | 1985-12-31 | Mfr. of plastics pipe impermeable to oxygen gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT23412/85A IT1186516B (en) | 1985-12-31 | 1985-12-31 | Mfr. of plastics pipe impermeable to oxygen gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IT8523412A0 IT8523412A0 (en) | 1985-12-31 |
| IT1186516B true IT1186516B (en) | 1987-11-26 |
Family
ID=11206866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT23412/85A IT1186516B (en) | 1985-12-31 | 1985-12-31 | Mfr. of plastics pipe impermeable to oxygen gas |
Country Status (1)
| Country | Link |
|---|---|
| IT (1) | IT1186516B (en) |
-
1985
- 1985-12-31 IT IT23412/85A patent/IT1186516B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| IT8523412A0 (en) | 1985-12-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ATE142374T1 (en) | METHOD FOR PRODUCING THIN POLYIMIDE PROTECTIVE LAYERS ON CERAMIC SUPERCONDUCTORS OR HIGH TEMPERATURE SUPERCONDUCTORS | |
| DE3673911D1 (en) | METHOD FOR PRODUCING A FILM HAVING A TEXTURED LACQUER LAYER. | |
| DE3675079D1 (en) | POLYOLEFIN FIBER WITH HIGH STRENGTH, LOW SHRINKAGE, ULTRA-HIGH MODULE, VERY LOW CRAWL AND WITH GOOD STRENGTH MAINTENANCE AT HIGH TEMPERATURE AND METHOD FOR THE PRODUCTION THEREOF. | |
| KR890010617A (en) | Radiation curable coating composition for thermoplastic gas, coating method of thermoplastic article and coated thermoplastic article | |
| CA2073137A1 (en) | In-situ generation of heat treating atmospheres using non-cryogenically produced nitrogen | |
| SE8600724L (en) | PROCEDURE AND DEVICE FOR MANUFACTURING GLASSED CERAMIC TILES AND TILES THEREOF | |
| BR8705453A (en) | METAL SOLID STATE INDICATOR / METAL OXIDE JUNCTION TYPE PROCESS | |
| IT1186516B (en) | Mfr. of plastics pipe impermeable to oxygen gas | |
| DE59710895D1 (en) | METHOD FOR PRODUCING A CATALYST | |
| BR8204175A (en) | PROCESS FOR THE PRODUCTION OF 3-CYANOPYRIDINE | |
| DE59711757D1 (en) | Flexible polyolefin foam with thermal insulation properties and process for its production | |
| KR100412245B1 (en) | Method for manufacturing double-faced water-soluble silicon paper | |
| ATE6227T1 (en) | PROCESS FOR MAKING HEAT-RECOVERABLE ARTICLES. | |
| JPS5338716A (en) | Surface treatment of inorganic fiber | |
| JPS567636A (en) | Treatment of exhaust gas containing nitrogen oxides | |
| ATE528973T1 (en) | PRODUCTION OF PHOTORESIST COATINGS | |
| KR900003415A (en) | Ceramic coating method of metal surface | |
| JPS5574838A (en) | Manufacturing of composite sheet | |
| JPS6438126A (en) | Gas separating membrane and production thereof | |
| JPS5511181A (en) | Gas soft nitriding method | |
| JPS57115825A (en) | Manufacture of semiconductor device | |
| JPS53102976A (en) | Method of forming carbon fiber filament | |
| JPS5250992A (en) | Equipment and process for producing sulfuric acid | |
| SU1199297A1 (en) | Method of temporary protection of metal articles of cylindrical shape | |
| JPS5787868A (en) | Gelling method of coated layer of both-side coating support |