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문제 및 해결책

일반적인 플라스틱 재료 문제에 대한 실질적인 답변

기사 둘러보기 →
11636 질문
Q
PVA water-soluble film dissolution rate mismatch
A
PVA water-soluble film dissolution rate is determined by alcoholysis degree and thickness
Molding Process PVA water-soluble filmdissolution ratealcoholysis degreefilm thicknessformulation adjustment
16 조회수
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Q
PVA hydrolysis aging
A
Hydrolysis aging is caused by polar groups being water-sensitive; selecting a low-polarity grade is the key
Material Drying PVAhydrolysis agingpolar groupanti-hydrolysis stabilizerwaterproof coating
16 조회수
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Q
Periodic PVA surface corrugations
A
Corrugations are caused by unstable injection; equipment overhaul and PID control are the key
Injection Molding PVAsurface corrugationinjection stabilityequipment overhaulPID control
15 조회수
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Q
Large smoke in PVA processing
A
Large smoke is caused by volatiles evaporation; temperature reduction and exhaust are the key
Material Analysis PVAprocessing smokevolatilesexhaust systemtemperature reduction
16 조회수
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Q
Poor PVA plasticization
A
Poor plasticization is caused by improper screw design; optimizing the screw and raising temperature are the key
Processing Machinery PVApoor plasticizationscrew compression ratioshear rateprocessing temperature
16 조회수
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Q
PVA internal inclusions
A
Inclusions are caused by raw material and environmental contamination; filtration and environmental control are the key
Production & Quality PVAinclusionraw material filtrationenvironmental cleanlinessrecycled material sorting
16 조회수
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Q
Insufficient strength of PVA water-soluble film
A
PVA water-soluble film strength is determined by alcoholysis degree; selecting a high alcoholysis degree grade is the key
Molding Process PVA water-soluble filmtensile strengthalcoholysis degreefilm thicknessplasticizer
16 조회수
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Q
PVA hardness too low
A
Low hardness is caused by soft material and excessive plasticization; adding filler is the key
Molding Process PVAlow hardnessrigid fillerplasticizercrystallization control
16 조회수
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Q
Insufficient PVA flatness
A
Insufficient flatness is caused by shrinkage difference and stress; uniform cooling and annealing are the key
Molds & Tooling PVAflatnessshrinkage differenceuniform mold temperatureannealing treatment
16 조회수
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Q
PVA internal unmelted particles
A
Unmelted particles are caused by insufficient plasticizing; raising temperature and reducing feeding are the key
Processing Machinery PVAunmelted particleplasticizing capacityprocessing temperaturescrew mixing
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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