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Sorun ve Çözüm

Yaygın plastik malzeme zorluklarına pratik yanıtlar

Makalelere Göz At →
740 soru
Q
EVOH Surface Stress Whitening
A
Stress whitening is caused by orientation and internal stress; reducing orientation and annealing are key
Molding Process EVOHstress whiteningorientation stressannealingstress concentration
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Q
Large EVOH Compression Set
A
Large compression set is caused by insufficient crosslinking; increasing crosslinking degree is key
Molding Process EVOHcompression setcrosslinking degreeelastic recoveryreinforcing filler
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Q
Coarse Internal Crystallization of EVOH
A
Coarse crystallization is caused by slow cooling; fast cooling and nucleating agent are key
Molding Process EVOHcoarse crystallizationspherulite refinementnucleating agentcooling rate
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Q
EVOH extruded film thick edges and thin middle
A
U-shaped thickness is caused by die flow channel and swell differences; coat-hanger die and gap fine-tuning are key
Molding Process EVOH film thickness distribution coat-hanger die gap fine-tuning edge effect
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Q
EVA foam surface large bubbles
A
Large bubbles are caused by blowing agent agglomeration and uneven temperature; masterbatch method is key
Molding Process EVA foam large bubbles AC agglomeration foaming temperature uniform crosslinking
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Q
EVA foam open cell content is high
A
High open cell content is caused by cell wall rupture; temperature control and moderate crosslinking are key
Molding Process EVA foam open cell content cell wall rupture crosslinking degree foaming temperature
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Q
EVA film heat-seal strength is insufficient
A
Insufficient EVA heat sealing requires increasing temperature, time, and pressure
Molding Process EVA film heat-seal strength heat-sealing temperature sealing time pressure
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Q
EVA hardness is too low
A
Low hardness is caused by material softness and excessive plasticization; adding filler is key
Molding Process EVA low hardness rigid filler plasticizer crystallization control
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Q
EVA impact strength fluctuates greatly
A
Impact fluctuation is caused by unstable dispersed phase and crystallization; stable processing is key
Molding Process EVA impact fluctuation dispersed phase particle size nucleating agent processing stability
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Q
EVA foam locally unfoamed
A
Local unfoamed areas are caused by insufficient temperature and uneven crosslinking; uniform temperature control and masterbatch method are key
Molding Process EVA foam local unfoamed blowing agent dispersion mold temperature control uniform crosslinking
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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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