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Makalelere Göz At →
11636 soru
Q
Silver Streaks Caused by Moisture in EVOH Processing
A
Silver streaks are caused by moisture vaporization and stretching; drying and venting are the main countermeasures
Material Drying EVOH injectionsilver streakmoisture dryingventingback pressure
16 görüntüleme
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Q
EVOH '2079851475616104452 Cold Slug Marks
A
Cold slug marks are caused by solidified residual material in the nozzle; increasing nozzle temperature and cold slug well design are key
Injection Molding EVOH injectioncold slug marknozzle temperaturecold slug wellinjection pressure
15 görüntüleme
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Q
EVOH Extruded Film Winding Wrinkles
A
Film wrinkling is caused by tension fluctuation and uneven thickness; automatic tension control and homogenization are key
Extrusion & Post EVOH filmwinding wrinkletension controlthickness uniformityguide roller parallelism
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Q
EVOH '2079851475616104452 Flow Marks
A
Flow marks are caused by unstable injection front and rapid cooling; multi-stage injection and high mold temperature are key
Injection Molding EVOH injectionflow markinjection speedmold temperaturegate area
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Q
EVOH '2079851475616104452 Sink Marks
A
Sink marks are caused by insufficient holding and wall thickness differences; high holding pressure and multiple gates are the core countermeasures
Injection Molding EVOH injectionsink markholding pressurewall thickness differencegate design
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Q
EVOH Performance Degradation After Repeated Processing
A
Performance degradation from multiple processing is caused by thermo-mechanical degradation; limiting regrind and supplementing antioxidant is key
Production & Quality EVOH recyclingperformance degradationantioxidant supplementationthermal degradationshear degradation
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Q
EVOH injection multi-cavity filling imbalance
A
Multi-cavity filling imbalance is caused by runner design; balanced runners and mold flow analysis are key
Injection Molding EVOH injection multi-cavity balance runner design gate size mold flow analysis
15 görüntüleme
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Q
EVOH injection molded product ejector whitening
A
Ejector whitening is caused by excessive ejection force and insufficient cooling; increasing ejector pin area and extending cooling time are key
Injection Molding EVOH injection ejector whitening ejector pin area cooling time draft angle
15 görüntüleme
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Q
EVOH heat-sensitive degradation and discoloration
A
EVOH heat-sensitive decomposition is caused by vinyl alcohol dealcoholization; temperature control is the fundamental countermeasure
Material Analysis EVOH thermal decomposition dealcoholization yellowing heat stabilizer temperature control
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Q
EVOH extrusion feeding is unstable
A
Unstable feeding is caused by pellet characteristics; loss-in-weight feeding and anti-bridging are core
Extrusion & Post EVOH feeding bridging loss-in-weight feeder pelletizing feeding screw
15 görüntüleme
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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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