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문제 및 해결책

일반적인 플라스틱 재료 문제에 대한 실질적인 답변

기사 둘러보기 →
11636 질문
Q
EVOH injection flash is severe
A
Flash is caused by high-pressure injection and mold gap; reducing pressure and improving mold fit are key
Injection Molding EVOH injection flash clamping force parting line injection pressure
15 조회수
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Q
EVOH film blocking and delamination difficulty
Q
EVOH extruded film thickness uniformity is poor
A
Film thickness uniformity requires coordinated optimization from die design, gap adjustment, and cooling
Extrusion & Post EVOH film thickness uniformity die design extrusion swell air ring cooling
15 조회수
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Q
EVOH extrusion dimensions are unstable
A
Extrusion dimensional stability depends on feeding accuracy, temperature control, and traction synchronization
Extrusion & Post EVOH extrusion dimensional stability feeding control temperature PID traction synchronization
15 조회수
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Q
EVOH film heat shrinkage rate is too large
A
Film heat shrinkage is caused by orientation freezing; reducing draw ratio and annealing treatment are key
Extrusion & Post EVOH film heat shrinkage orientation release annealing treatment biaxial stretching
15 조회수
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Q
EVOH injection warpage deformation
A
Warpage is caused by shrinkage differences and orientation stress; uniform mold temperature and holding pressure are key
Injection Molding EVOH injection warpage shrinkage rate holding pressure annealing treatment
15 조회수
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Q
EVOH injection gate freezes too early
A
Premature gate freezing is caused by small gate and low temperature; enlarging the gate and increasing temperature are fundamental measures
Injection Molding EVOH injection gate freezing holding pressure transmission gate size mold temperature
15 조회수
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Q
EVOH injection mold venting burnt
A
Burning is caused by insufficient venting and high-speed injection compressing air; increasing venting and reducing speed are key
Injection Molding EVOH injection mold burning vent groove injection speed air compression
15 조회수
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Q
EVOH extrusion die drool carbon deposits
A
Die carbon deposits are caused by thermal oxidation and untimely cleaning; PE flushing and timely cleaning are key
Extrusion & Post EVOH extrusion die carbon deposit PE flushing stagnation zone thermal oxidation
15 조회수
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Q
EVOH barrier property decreases after moisture absorption
A
EVOH moisture absorption causing a sharp drop in barrier property is its inherent characteristic, requiring sandwich structure protection
Material Drying EVOH moisture absorption barrier property decrease OTR sandwich structure humidity protection
16 조회수
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카테고리

전체 주제 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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