PC sheet extrusion basic principles
Thermosetting plastic extrusion usually reciprocating PC sheet hydraulic machine, the dry powdery or flaky material from the hopper into the press or feed chamber indirectly cooled by water, and the PC sheet hydraulic machine punch piston driven by a water-cooled, the plunger red head forward during hopper closed, and the barrel of the material toward the former with the previous material compaction plunger reciprocating material from the cross-sectional shape to the desired cross-sectional shape changes, mainly in the flow zone, at this stage materials fully softened, is compressed into a final shape, into the last part begin to cure slightly conical, in order to adapt to the curing shrinkage of the material, the final part of the curing zone.
PC sheet extrusion pressure points
Continuous extrusion equipment for the screw extruder PC sheet.
Intermittent extrusion equipment used in the plunger extruder PC sheet.
The main molding member of a plunger-type extruder PC sheet is heated barrel and put pressure on the plunger, when the molded article is a part of the material added to the barrel, by means of the barrel of the external heating to plasticizing and rely plunger pushing the extrusion die orifice of the handpiece, and add a material extruded after, the plunger back, plus a new material after next pushing operation, is not continuous, but can not so that the material is stirred and mixed so that the poor uniformity of the temperature of the plasticized material, currently rarely used
Thermosetting plastic extrusion usually reciprocating PC sheet hydraulic machine, the dry powdery or flaky material from the hopper into the press or feed chamber indirectly cooled by water, and the PC sheet hydraulic machine punch piston driven by a water-cooled, the plunger red head forward during hopper closed, and the barrel of the material toward the former with the previous material compaction plunger reciprocating material from the cross-sectional shape to the desired cross-sectional shape changes, mainly in the flow zone, at this stage materials fully softened, is compressed into a final shape, into the last part begin to cure slightly conical, in order to adapt to the curing shrinkage of the material, the final part of the curing zone.
PC sheet extrusion pressure points
Continuous extrusion equipment for the screw extruder PC sheet.
Intermittent extrusion equipment used in the plunger extruder PC sheet.
The main molding member of a plunger-type extruder PC sheet is heated barrel and put pressure on the plunger, when the molded article is a part of the material added to the barrel, by means of the barrel of the external heating to plasticizing and rely plunger pushing the extrusion die orifice of the handpiece, and add a material extruded after, the plunger back, plus a new material after next pushing operation, is not continuous, but can not so that the material is stirred and mixed so that the poor uniformity of the temperature of the plasticized material, currently rarely used
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