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Problema y solución

Respuestas prácticas a los desafíos comunes de los materiales plásticos

11636 preguntas
Q
Unstable PVA extrusion feeding
A
Unstable feeding is caused by pellet characteristics; loss-in-weight feeding and anti-bridging are the core
Extrusion & Post PVA feedingbridgingloss-in-weight feedergranulationfeed screw
Q
Poor printing adhesion of PVA film
A
Poor printing adhesion is caused by insufficient surface polarity; corona treatment and dedicated ink are the key
Extrusion & Post PVA filmprinting adhesioncorona treatmentdedicated inksurface tension
Q
PVA extruded film thick at edges and thin in the middle
A
U-shaped thickness is caused by die flow channel and swelling differences; coat-hanger die and gap fine-tuning are the key
Molding Process PVA filmthickness distributioncoat-hanger diegap fine-tuningedge effect
Q
Uneven color when PVA is mixed with color masterbatch
A
Color masterbatch carrier matching and full dispersion are the key to color uniformity
Injection Molding PVA coloringcolor masterbatchcarrier compatibilitypigment dispersioncolor streaks
Q
Rough surface of PVA extrusion
A
Rough surface is caused by low-temperature extrusion and die defects; raising temperature and polishing the die are the core countermeasures
Extrusion & Post PVA extrusionsurface roughnessdie polishingextrusion temperaturemelt elasticity
Q
Severe screw wear of PVA extruder
A
Screw wear is caused by filler friction and adhesion; wear-resistant screw and temperature control are the key
Extrusion & Post PVA extrusionscrew wearnitrided screwfiller frictionbimetallic screw
Q
Oil spots on PVA injection molded products
A
Oil spots are caused by external sources of release agent and lubricant; reducing release agent and sealing mold lubrication are key
Injection Molding PVA injection oil spots mold release agent lubricant precipitation mold sealing
Q
Low weld line strength in PVA '2079851475616104452
A
Low weld line strength is caused by insufficient molecular entanglement; high-temperature high-speed injection and overflow groove are effective countermeasures
Injection Molding PVA injection weld line insufficient entanglement injection temperature overflow groove
Q
Insufficient flow length ratio in PVA '2079851475616104452
A
Insufficient flow length ratio is caused by PVA high viscosity; high temperature, high pressure and large gates are key
Injection Molding PVA injection flow length ratio melt viscosity injection temperature flow aid
Q
Material sticking to sizing sleeve of PVA extruded pipe
A
Sizing sleeve sticking is caused by elastomer adhesion characteristics; polishing and lubricating water are key
Molding Process PVA pipe sizing sleeve sticking polishing lubricating water elastomer adhesion
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