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Yaygın plastik malzeme zorluklarına pratik yanıtlar

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2239 soru
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
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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
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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
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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
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Q
Rough inner wall of PVA extruded pipe
A
Rough pipe inner wall is caused by mandrel condition and insufficient cooling; polishing mandrel and internal cooling are key
Extrusion & Post PVA pipe rough inner wall mandrel polishing internal cooling melt elasticity
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Q
Longitudinal stripes on PVA extruded film
A
Longitudinal stripes are caused by die defects and pressure fluctuation; die maintenance and pressure stability are key
Extrusion & Post PVA film longitudinal stripes die gap melt pressure lip flatness
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Q
PVA film blocking, difficult to delaminate
Q
Bending deformation of PVA extruded profile
A
Profile bending is caused by uneven cooling and uneven flow velocity; homogenization and alignment are the key to solution
Extrusion & Post PVA extrusion bending deformation uniform cooling uniform flow velocity sizing sleeve
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Q
Poor thickness uniformity of PVA extruded film
A
Film thickness uniformity needs coordinated optimization from three aspects: die design, gap adjustment and cooling
Extrusion & Post PVA film thickness uniformity die design extrusion swell air ring cooling
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Q
Excessive heat shrinkage of PVA film
A
Film heat shrinkage is caused by orientation freezing; reducing draw ratio and annealing treatment are key
Extrusion & Post PVA film heat shrinkage orientation release annealing treatment biaxial stretching
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Tüm Konular 11636 Material Drying 1439 Injection Molding 1506 Molding Process 740 Molds & Tooling 1506 Processing Machinery 2025 Extrusion & Post 2239 Blow Molding 315 Thermoforming 141 Material Analysis 1343 Production & Quality 382
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