Problem & Solution

Practical answers to common plastic material challenges

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Longitudinal thickness fluctuation of PET film

Longitudinal thickness fluctuation of PET film originates from equipment stability.

Extrusion & Post PETfilmthickness fluctuationmetering pumpcasting drum

Warpage deformation of PET injection molded parts

The root of PET warpage lies in uneven shrinkage.

Injection Molding PETwarpagedeformationuneven shrinkageproduct design

Negative pressure deformation of PET hot-fill bottles

Molding Process PEThot fillingnegative pressure deformationvacuum panelheat resistance

Skewed deformation of PET bottle mouths

PET bottle mouth precision directly affects sealing; mouth cooling and demolding are key.

Molds & Tooling PETbottle mouthskewdeformationinsufficient cooling

Sharkskin on the surface of PET extruded pipes

PET pipe sharkskin is a typical manifestation of melt fracture.

Extrusion & Post PETpipesharkskinmelt fracturedie head temperature

Poor weather resistance and yellowing of PET products

PET outdoor applications must undergo light stabilization treatment.

Material Analysis PETweather resistanceyellowingultravioletlight stabilizer

Scaling in PET mold cooling water channels

Injection Molding PETmoldscalingcooling waterwater treatment

Uneven solid-state polycondensation of PET chips

PET solid-state polycondensation uniformity is key to bottle-grade chip quality.

Molding Process PETsolid-state polycondensationSSPIV valueparticle size

PET extruded cast film sticking to the roll

Extrusion & Post PETcast filmroll stickingcooling rollsurface treatment

Insufficient filling/short shot in PET preform injection

PET preform short shot is usually related to excessive flow resistance.

Injection Molding PETshort shotinsufficient fillinginjection pressuregate

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