This article discusses how different TPE pelletizing methods, such as cold cutting and hot cutting, influence product quality. It highlights key extrusion parameters including melt temperature, pressure, and conveying speed, which directly affect pellet consistency and final product performance. Common pellet quality issues—such as black spots, discoloration, poor plasticization, or excess moisture—are analyzed with corresponding solutions to ensure stable extrusion, improved material properties, and higher product reliability.

This article analyzes the challenges of carbon black dispersion in black masterbatch production using twin screw extruders. Issues such as brittle or broken strands, hopper bridging, and uneven feeding are discussed. Key factors include dispersant ratio, temperature control, screw speed, and hopper design. Practical solutions—such as adjusting EVA wax content, optimizing temperature and screw configuration, adding vibration devices, and improving pre-dispersion of pigments—are proposed to enhance extrusion efficiency and ensure uniform masterbatch quality.

Compared with strand pelletizing, underwater pelletizing has the advantages of better pellet quality, higher degree of automation and lower cost. However, compared with less sensitive commodity resins such as polyethylene, polypropylene or polystyrene, the risk of mold freezing is greater when producing engineering resins such as those mentioned in the previous paragraph.

But how to choose a suitable plastic pelletizing machine? In this article, we will walk you through the process of choosing a suitable plastic pelletizing machine, providing expert advice and practical tips.

Based on the two processes of strand pelletizing and underwater pelletizing, we try to analyze seven common granulation problems and the corresponding solutions, and provide some suggestions for continuous mass production of quality products.

Haisi Extrusion supply automatic strand pelletizing line for PET bottle recycling.

The whole water strand pelletizing line includes: water bath, plastic pelletizer, blower and silo.