PE Modified Twin-screw Granulator

Temperature Setting Principle: For filled systems, the melt zone temperature should exceed the base material's melting point by 10–20℃ to ensure complete melting and uniform filler distribution.

Screw Configuration Strategy: Combine screw elements according to modification objectives. Simple physical melt blending may employ low-shear configurations; achieving high dispersion requires incorporating kneading blocks or similar elements to enhance shear.

Feeding Method: PE modification commonly employs 'starvation feeding', wherein feed rate and main screw speed are independently controlled. This facilitates precise regulation of residence time and filler loading.

Section Function Design: Screws are typically divided into conveying, melting, kneading, venting, and homogenising sections, each serving specific functions.

Filler modification: Such as adding calcium carbonate, talc powder, etc., to reduce costs and enhance rigidity.

Reinforcement modification: Such as incorporating glass fibre to significantly improve material strength and heat resistance.

Functional masterbatch: Such as producing PE anti-block masterbatch to prevent film adhesion.

Alloying and blending: Blending PE with other polymers to achieve novel properties.

Degradable plastics: Manufacturing biodegradable plastic pellets.