FIELD: mechanics.
SUBSTANCE: extrusion head comprises a melt feeder, several slit circular channels arranged concentrically relative to the extrusion head central axis and helical distributors. The inner channel helical melt distributor is arranged on the inner constricting wall relative to the extrusion head central axis. The outer channel helical distributor is arranged on the outer constricting wall. Several primary distributors distribute the melt coming out of the melt feeder into separate flows getting merged in the helical distributors. The extrusion head comprises also a circular extrusion nozzle integrating the melt channels.
EFFECT: production of sleeve film without matted or wavy sections thanks to use of extrusion head.
4 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| EXTRUSION HEAD FOR MANUFACTURING HOSE OF POLYMERIC FILM | 1992 |
|
RU2010716C1 |
| EXTRUSION MACHINE | 1995 |
|
RU2095242C1 |
| APPARATUS FOR PRODUCING NET-REINFORCED SLEEVE-TYPE ARTICLES | 0 |
|
SU882760A1 |
| EXTRUSION HEAD FOR MAKING POLYMERIC BAG FILM | 0 |
|
SU863391A1 |
| UNIT FOR PRODUCING BIDIRECTIONALLY ORIENTED SLEEVE-TYPE POLYMERIC FILMS | 0 |
|
SU874382A1 |
| EXTRUSION HEAD FOR MANUFACTURING SLEEVE POLYMER FILM | 0 |
|
SU880779A2 |
| EXTRUSION HEADFOR PRODUCING BAG POLYMERIC FILMS | 0 |
|
SU897550A2 |
| BAG FILM COOLING ARRANGEMENT | 0 |
|
SU1500148A3 |
| EXTRUDER HEAD FOR MAKING POLYMERIC BAG FILM | 0 |
|
SU655559A1 |
| EXTRUSION HEAD FOR JOINT EXTRUSION OF SEVERAL PLASTIC MATERIALS IN THE SHAPE OF HOSE FILM | 0 |
|
SU1371494A3 |
