Problem & Solution

Practical answers to common plastic material challenges

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EVOH Hydrolytic Aging

Material Analysis EVOHhydrolytic agingpolar groupanti-hydrolysis stabilizerwaterproof coating

Poor EVOH Plasticization

Processing Machinery EVOHpoor plasticizationscrew compression ratioshear rateprocessing temperature

EVOH Internal Inclusions

Production & Quality EVOHinclusionraw material filtrationenvironmental cleanlinessrecycling sorting

Heavy Smoke in EVOH Processing

Heavy smoke is caused by volatile evaporation; cooling and exhaust are key

Material Analysis EVOHprocessing smokevolatilesexhaust systemcooling

Uneven Internal Density of EVOH

Uneven density is caused by uneven holding; optimizing gate design is key

Molds & Tooling EVOHuneven densityholding pressure transmissiongate designcrystallization difference

EVOH Hardness Too Low

Molding Process EVOHlow hardnessrigid fillerplasticizercrystallization control

Insufficient EVOH Flatness

Molds & Tooling EVOHflatnessshrinkage differenceuniform mold temperatureannealing

Unmelted Particles Inside EVOH

Processing Machinery EVOHunmelted particleplasticizing capacityprocessing temperaturescrew mixing

Large EVOH Impact Strength Fluctuation

Molding Process EVOHimpact fluctuationdispersed phase particle sizenucleating agentprocessing stability

EVOH Internal Shrinkage Cavities

Molds & Tooling EVOHshrinkage cavitythick wallholding timegate freezing

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