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Yaygın plastik malzeme zorluklarına pratik yanıtlar

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11636 soru
Q
Excessive EEA film heat shrinkage
A
Film heat shrinkage is caused by orientation freezing; reducing draw ratio and annealing are the key
Extrusion & Post EEA filmheat shrinkageorientation releaseannealing treatmentbiaxial stretching
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Q
Unstable EEA extrusion dimensions
A
Extrusion dimensional stability depends on feeding accuracy, temperature control and haul-off synchronization
Extrusion & Post EEA extrusiondimensional stabilityfeeding controltemperature PIDhaul-off synchronization
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Q
EEA injection warpage deformation
A
Warpage is caused by shrinkage difference and orientation stress; uniform mold temperature and holding are the key
Injection Molding EEA injectionwarpageshrinkage rateholding pressureannealing treatment
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Q
EEA injection gate freezing too early
A
Premature gate freezing is caused by small gate and low temperature; enlarging the gate and increasing temperature are the fundamental measures
Injection Molding EEA injectiongate freezingholding transmissiongate sizemold temperature
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Q
EEA injection mold venting burnt
A
Burnt is caused by insufficient venting and high-speed injection compressing air; increasing venting and reducing speed is the key
Injection Molding EEA injectionmold burntvent grooveinjection speedair compression
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Q
EEA extrusion die drool and carbon deposits
A
Die carbon deposits are caused by thermal oxidation and untimely cleaning; PE flushing and timely cleaning are the key
Extrusion & Post EEA extrusiondie carbon depositPE flushingresidence zonethermal oxidation
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Q
Delamination of EEA blended with incompatible resin
A
Blends with large polarity difference require reactive compatibilizer to form chemical bonding at the interface for resolution
Extrusion & Post EEA blend delaminationpolarity differenceEEA-g-MAHreactive compatibilizationinterfacial bonding
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Q
EEA extrusion pelletizing strand sticking
A
Strand sticking is caused by elastic recovery and low-temperature pelletizing; high-temperature water cutting and fast cutting are the key
Extrusion & Post EEA pelletizingstrand stickingpelletizing water temperaturecutter speedelastic recovery
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Q
Severe parison sag in EEA extrusion '2079851475616104457
A
Parison sag is caused by low melt strength; slight crosslinking and wall thickness control are the key
Blow Molding EEA '2079851475616104457parison sagmelt strengthslight crosslinkingwall thickness control
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Q
EEA products yellowing after processing
A
Yellowing is caused by thermal and photo oxidation and metal catalysis; improving the antioxidant system and UV absorber is the key
Production & Quality EEA yellowingthermal oxidationantioxidantUV absorbermetal catalysis
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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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