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Problema e solução

Respostas práticas para os desafios comuns dos materiais plásticos

11636 perguntas
Q
Screw design mismatch of linear low-density polyethylene extruder
A
Screw design needs to match material characteristics and product requirements; customize special screws if necessary.
Processing Machinery screw designcompression ratiolength-to-diameter ratiomixing elementscrew matching
Q
Rough inner wall of linear low-density polyethylene extruded products
A
Rough inner wall is caused by low mandrel temperature or poor surface condition and needs to be solved from temperature control and mold maintenance.
Processing Machinery rough inner wallmandrel temperaturemandrel polishingmelt temperatureplasticization quality
Q
Degradation discoloration appearing on linear low-density polyethylene extruded products
Q
Cyclic pressure fatigue failure of linear low-density polyethylene PPR pipes
Q
Thermal aging performance of linear low-density polyethylene PPR pipes not meeting standards
Q
Bubbles/pores on the surface of linear low-density polyethylene extruded products
Q
Defects caused by insufficient drying before linear low-density polyethylene linear low-density polyethylene processing
A
Insufficient drying is a common root cause of processing defects; a complete drying system and moisture content testing system need to be established.
Material Drying raw '2079851475616104451moisture contentsilver streakbubblesdehumidifying drying
Q
Melt flow rate mismatch of raw material for linear low-density polyethylene extrusion
A
MFR mismatch needs to be solved by selecting suitable grades and adjusting temperature parameters.
Extrusion & Post melt flow rategrade selectionextrusion gradeprocess adjustmentbatch testing
Q
Uneven wall thickness of linear low-density polyethylene extruded pipes
A
Uneven wall thickness is caused by uneven die gap or uneven temperature and needs to be solved from mold precision and temperature uniformity.
Extrusion & Post uneven wall thicknessdie concentricitytemperature uniformityhaul-off stabilitysizing sleeve
Q
Improper processing temperature window selection for linear low-density polyethylene linear low-density polyethylene
A
Temperature window selection is the foundation of processing and needs to be reasonably set according to material characteristics and actual operating experience.
Processing Machinery processing temperaturetemperature windowplasticization qualitymaterial degradationtemperature calibration
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