IT1201093B - Anaerobic digester - Google Patents
Anaerobic digesterInfo
- Publication number
- IT1201093B IT1201093B IT19887/83A IT1988783A IT1201093B IT 1201093 B IT1201093 B IT 1201093B IT 19887/83 A IT19887/83 A IT 19887/83A IT 1988783 A IT1988783 A IT 1988783A IT 1201093 B IT1201093 B IT 1201093B
- Authority
- IT
- Italy
- Prior art keywords
- density polyethylene
- blends
- temp
- layer
- low density
- Prior art date
Links
- 239000000203 mixture Substances 0.000 abstract 4
- 239000004743 Polypropylene Substances 0.000 abstract 2
- 229920001903 high density polyethylene Polymers 0.000 abstract 2
- 239000004700 high-density polyethylene Substances 0.000 abstract 2
- 229920000092 linear low density polyethylene Polymers 0.000 abstract 2
- 239000004707 linear low-density polyethylene Substances 0.000 abstract 2
- 229920001684 low density polyethylene Polymers 0.000 abstract 2
- 239000004702 low-density polyethylene Substances 0.000 abstract 2
- -1 polypropylene Polymers 0.000 abstract 2
- 229920001155 polypropylene Polymers 0.000 abstract 2
- 238000001125 extrusion Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 229920000098 polyolefin Polymers 0.000 abstract 1
Landscapes
- Laminated Bodies (AREA)
Abstract
Polyolefin film with a mat finish comprises at least two coextruded layers; an upper mat finish layer comprising high density polyethylene, polypropylene or blends thereof and a second layer comprising low density polyethylene, linear low density polyethylene or blends thereof. The film is prepd. by coextrusion of an external layer comprising high density polyethylene, polypropylene or blends thereof and an internal layer comprising low density polyethylene, linear low density polyethylene or blends thereof. The extrusion process comprises passage of the coextruded layers from feed zone to an extruder die through temp. control zones where the external layer passing through the temp. control zones from the feed zone is heated more rapidly to a higher temp. than the corresp. internal layer in the corresp. temp. control zone
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT19887/83A IT1201093B (en) | 1983-03-04 | 1983-03-04 | Anaerobic digester |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT19887/83A IT1201093B (en) | 1983-03-04 | 1983-03-04 | Anaerobic digester |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8319887A0 IT8319887A0 (en) | 1983-03-04 |
IT1201093B true IT1201093B (en) | 1989-01-27 |
Family
ID=11162073
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT19887/83A IT1201093B (en) | 1983-03-04 | 1983-03-04 | Anaerobic digester |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1201093B (en) |
-
1983
- 1983-03-04 IT IT19887/83A patent/IT1201093B/en active
Also Published As
Publication number | Publication date |
---|---|
IT8319887A0 (en) | 1983-03-04 |
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