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Problema e solução

Respostas práticas para os desafios comuns dos materiais plásticos

2239 perguntas
Q
DSTDP extruded film longitudinal streaks
A
Longitudinal streaks are caused by die defects and pressure fluctuation; die maintenance and pressure stability are key
Extrusion & Post DSTDP filmlongitudinal streaksdie gapmelt pressurelip flatness
Q
DSTDP film poor print adhesion
A
Poor print adhesion is caused by insufficient surface polarity; corona treatment and special ink are key
Extrusion & Post DSTDP filmprint adhesioncorona treatmentspecial inksurface tension
Q
DSTDP extruded profile bending deformation
A
Profile bending is caused by uneven cooling and uneven flow rate; uniformization and alignment are the key to solution
Extrusion & Post DSTDP extrusionbending deformationuniform coolinguniform flow ratesizing sleeve
Q
DSTDP film blocking, difficult to delaminate
Q
DSTDP extrusion unstable dimensions
A
Extrusion dimensional stability depends on feeding accuracy, temperature control and haul-off synchronization
Extrusion & Post DSTDP extrusiondimensional stabilityfeeding controltemperature PIDhaul-off synchronization
Q
DSTDP extruded film poor thickness uniformity
A
Film thickness uniformity needs coordinated optimization from the three aspects of die design, gap adjustment and cooling
Extrusion & Post DSTDP filmthickness uniformitydie designextrusion swellair ring cooling
Q
DSTDP film excessive thermal shrinkage
A
Film thermal shrinkage is caused by frozen-in orientation; reducing draw ratio and annealing treatment are key
Extrusion & Post DSTDP filmthermal shrinkageorientation releaseannealing treatmentbiaxial stretching
Q
DSTDP extrusion die deposit and carbon buildup
A
Die carbon buildup is caused by thermo-oxidation and untimely cleaning; PE flushing and timely cleaning are key
Extrusion & Post DSTDP extrusiondie carbon buildupPE flushingresidence zonethermo-oxidation
Q
DSTDP 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 DSTDP pelletizingconnected pelletspelletizing water temperaturecutter speedelastic recovery
Q
DSTDP blended with incompatible resins delamination
A
Blends with large polarity differences require reactive compatibilizers that form chemical bonding at the interface to solve
Extrusion & Post DSTDP blend delaminationpolarity differenceDSTDP-g-MAHreactive compatibilizationinterfacial bonding
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