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Problema e solução

Respostas práticas para os desafios comuns dos materiais plásticos

2239 perguntas
Q
MP extruded film longitudinal streaks
A
longitudinal streaks are caused by die defects and pressure fluctuation; die maintenance and pressure stability are key
Extrusion & Post MP film longitudinal streaks die gap melt pressure lip flatness
Q
MP extruded profile bending deformation
A
profile bending is caused by uneven cooling and uneven flow velocity; homogenization and alignment are the keys to solving
Extrusion & Post MP extrusion bending deformation uniform cooling uniform flow velocity calibrating sleeve
Q
MP film excessive heat shrinkage
A
film heat shrinkage is caused by orientation freezing; reducing draw ratio and annealing are key
Extrusion & Post MP film heat shrinkage orientation release annealing biaxial stretching
Q
MP extruded film poor thickness uniformity
A
film thickness uniformity requires coordinated optimization from die design, gap adjustment and cooling
Extrusion & Post MP film thickness uniformity die design extrusion swell air ring cooling
Q
MP extrusion dimensional instability
A
extrusion dimensional stability depends on feeding accuracy, temperature control and haul-off synchronization
Extrusion & Post MP extrusion dimensional stability feeding control temperature PID haul-off synchronization
Q
MP blended with incompatible resin delamination
A
blends with large polarity difference require a reactive compatibilizer to form chemical bonding at the interface to solve
Extrusion & Post MP blend delamination polarity difference MP-g-MAH reactive compatibilization interfacial bonding
Q
MP extrusion die buildup carbon deposits
A
die carbon deposits are caused by thermal oxidation and untimely cleaning; PE flushing and timely cleaning are key
Extrusion & Post MP extrusion die carbon deposit PE flushing stagnation zone thermal oxidation
Q
MP extrusion pelletizing connected pellets
A
connected pellets are caused by elastic recovery and low-temperature pelletizing; high-temperature water cutting and fast cutting are key
Extrusion & Post MP pelletizing connected pellets pelletizing water temperature cutter speed elastic recovery
Q
MP extrusion melt fracture
Q
Glass Fibre surface snakeskin pattern
A
snakeskin pattern is caused by low-temperature extrusion and elastic recovery; raising temperature and reducing speed are key
Extrusion & Post Glass Fibre snakeskin pattern extrusion temperature elastic recovery die temperature control
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