ES422240A3 - Some improvements in the heads for the manufacture of multiple layer sheets, by blowing. (Machine-translation by Google Translate, not legally binding) - Google Patents
Some improvements in the heads for the manufacture of multiple layer sheets, by blowing. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES422240A3 ES422240A3 ES422240A ES422240A ES422240A3 ES 422240 A3 ES422240 A3 ES 422240A3 ES 422240 A ES422240 A ES 422240A ES 422240 A ES422240 A ES 422240A ES 422240 A3 ES422240 A3 ES 422240A3
- Authority
- ES
- Spain
- Prior art keywords
- annular
- manufacture
- head
- wedge
- heads
- 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
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Improvements in the heads for the manufacture of multi-layered, blown sheets, of the type comprising a head for the manufacture of multiple tubular sheets by blowing, by means of a series of concentric annular grooves, having a series of annular extrusion steps that they extend axially in the head and converge radially to join the extruded sheets separately, characterized by the arrangement of an axially interchangeable wedge-shaped annular element, of substantially frustoconical section, whose side walls diverge radially backwards from the extrusion face of the matrix, defining at least partially two adjacent annular extrusion passages formed together with the inner wall of the head, said wedge-shaped element further comprising an annular feed channel for a liquid unitive agent disposed between said diverging walls and intended for extending from the base from the wedge-shaped element forward, to a terminal area that is in communication with one, at least, of said annular extrusion passages around the entire circumference thereof. (Machine-translation by Google Translate, not legally binding)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES422240A ES422240A3 (en) | 1974-01-07 | 1974-01-07 | Some improvements in the heads for the manufacture of multiple layer sheets, by blowing. (Machine-translation by Google Translate, not legally binding) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES422240A ES422240A3 (en) | 1974-01-07 | 1974-01-07 | Some improvements in the heads for the manufacture of multiple layer sheets, by blowing. (Machine-translation by Google Translate, not legally binding) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES422240A3 true ES422240A3 (en) | 1976-05-16 |
Family
ID=8465732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES422240A Expired ES422240A3 (en) | 1974-01-07 | 1974-01-07 | Some improvements in the heads for the manufacture of multiple layer sheets, by blowing. (Machine-translation by Google Translate, not legally binding) |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES422240A3 (en) |
-
1974
- 1974-01-07 ES ES422240A patent/ES422240A3/en not_active Expired
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