Problem & Solution

Practical answers to common plastic material challenges

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PET Preform Excessive IV Value Drop

Material Drying PET; IV; intrinsic viscosity; hydrolysis; thermal degradation; molecular weight

PET Preform Short Shot Material Shortage

Injection Molding PET; preform; short shot; material shortage; injection pressure; gate

PET Preform Black Speck Impurities

Extrusion & Post PET; preform; black speck; carbonization; hot runner; cleaning

PET Acetaldehyde AA Content Exceeding Standard

Molds & Tooling PET; acetaldehyde; AA; thermal degradation; odor; food safety

PET Preform White Haze Crystallization (Slow Cooling)

Injection Molding PET; preform; white haze; crystallization; cooling; transparency

PET Preform Bubbles (Insufficient Drying)

Material Drying PET; preform; bubble; drying; moisture content; hydrolysis

PET Sheet Winding Problem

Winding = thickness + tension.

Extrusion & Post PET; sheet; winding; wrinkles; tension

PET Preform Mold Eccentric Wear

Cavity number traceability locates the eccentricity source.

Injection Molding PET; preform; mold wear; concentricity; cavity number

PET Preform Re-Moistening After Drying

Preventing re-moistening = the second half of drying.

Material Drying PET; drying; re-moistening; sealing; conveying

PET Bottle Improper Mold Temperature

Mold temperature 10~15℃ is the standard window.

Molds & Tooling PET; bottle blowing; mold temperature; bottle sticking; chiller

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