This article analyzes the issue of pellet return and secondary cutting in underwater pelletizers, which affects pellet quality by increasing irregular shapes and fines. It identifies five key factors contributing to the problem: (1) excessive backflow of overflow and spray water, (2) inadequate spray flow beneath the water knife holder, (3) improper water temperature and flow rate, (4) incorrect blade back rake angle, and (5) excessive spacing between front and rear traction rollers. Solutions include optimizing backflow control, ensuring proper spray direction and pressure, adjusting water temperature seasonally, maintaining blade geometry, and setting appropriate roller gaps to improve cutting efficiency and product quality.

Advances in twin screw extruders offer opportunities for processing that is shear sensitive or limited by torque and/or temperature. Regardless of the formulation and/or end product, it is important for processors to understand and employ the latest technology to achieve success.

Before processing and granulating, a complete set of granulation equipment is required, which is the TPE/TPR granulation production line. The basic components include mixing equipment, plasticizing equipment, cooling equipment, granulating equipment, and batch mixing equipment. Common TPE/TPR pelletizing production lines include "strand pelletizing", "underwater pelletizing" and "water ring pelletizing".

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.

What are the components of the underwater pelletizing unit and its advantages?

With more and more research, the underwater pelletizer now has more and more advantageous features, especially dust purification plays a big role in environmental protection work. In this article, we will talk about how the underwater pelletizer purifies dust and how to clean the underwater pelletizer.

How to reduce the energy consumption of underwater pelletizing machines and improve the environmental pollution problem is gradually becoming a major concern. As the global petrochemical occupation is unusually rapid, the demand for granulators is rapidly increasing, the underwater granulator is getting bigger and bigger, and users are demanding more and more mechanical stability and energy-saving and cost reduction. underwater pelletizer does not use substances for basic transformation, but also all, multi-level energy-saving skills transformation, vigorously carry out underwater pelletizer using renewable energy and industrial thermal energy skills. So, how does the underwater granulator reach the effect of saving energy?

​Underwater pelletizer, as the name implies, is a machine and equipment for cutting materials underwater. At present, this domestic technology is quite mature, and underwater pelletizers are used in many fields. So what are the benefits of the underwater pelletizer? Let's take a look together next.

an underwater pelletizing granulation line