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11636 soru
Q
Severe Internal Stress Concentration in EVOH
A
Internal stress is caused by fast injection and uneven cooling; speed reduction, uniform cooling and annealing are key
Injection Molding EVOHinternal stressorientation stressannealinguniform cooling
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Q
Dense EVOH Surface Pits
A
Pits are caused by raw material impurities and mold damage; pure raw material and mold maintenance are key
Extrusion & Post EVOHsurface pitimpurity particlemold repairraw material purity
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Q
Material Overflow at EVOH Vacuum Vent
A
Overflow is caused by low melt viscosity; cooling and adding baffle are key
Extrusion & Post EVOHvacuum vent overflowmelt viscositycoolingvent baffle
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Q
EVOH Length Out of Tolerance
A
Length out of tolerance is caused by unstable shrinkage; precise shrinkage compensation is key
Molds & Tooling EVOHlength out of toleranceshrinkagemold compensationfull cooling
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Q
EVOH Stress Cracking
A
Stress cracking is caused by stress-accelerated chemical attack; annealing and high MW are key
Production & Quality EVOHstress crackingenvironmental stressannealinghigh molecular weight
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Q
EVOH Material Changeover Residue
A
Changeover residue is caused by incomplete cleaning; thorough cleaning and disassembly are key
Processing Machinery EVOHchangeover residuepurging compoundscrew disassemblydead zone cleaning
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Q
EVOH Surface Microcracks
A
Microcracks are caused by excessive internal stress; annealing and crack-resistant design are key
Production & Quality EVOHmicrocrackinternal stressannealingstress concentration design
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Q
Poor EVOH Surface Gloss
A
Poor gloss is caused by mold roughness and crystalline scattering; polishing mold and controlling crystallization are key
Molds & Tooling EVOHglossmold polishingcrystalline scatteringnucleating agent
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Q
Fast UV Aging of EVOH
A
Fast UV aging is caused by photo-oxidation; UV absorber and HALS are key
Material Analysis EVOHUV agingUV absorberHALSradical scavenging
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Q
Unstable EVOH Shrinkage
A
Shrinkage instability is caused by batch differences and temperature fluctuations; raw material and temperature control are key
Material Analysis EVOHshrinkagebatch differencetemperature control stabilitycrystallization consistency
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Kategoriler

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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