How much do you know about the underwater pelletizing equipment company?

The initial development of underwater pelletizing equipment was in the 1970s. With the development of materials science and research on polymers, the demand for plastics market is huge, and various companies have begun to research polymer pelletizing equipment.

Our initial underwater granulation equipment was imitated in the 1980s by absorbing and digesting the underwater granulator technology produced by a German company.

underwater granulation equipment

Purpose of underwater pelletizing system

Generally speaking, plastic granulation can be divided into cold cutting and hot cutting. The so-called cold cutting refers to the common strip cutting and diehead cutting. To put it bluntly, the strips are cooled and then granulated. Correspondingly, hot cutting generally refers to granulation on the hot mold surface. It can be divided into water ring pelletizng, air-cooled pelletizing, and underwater pelletizing.

Why are there so many categories?

Most companies mainly consider the one-time purchase cost of equipment + production requirements. 

Cold cutting costs are low, but production capacity will be very limited.

Water ring and air cooling cannot cut materials with high melt index and high output!

This creates an underwater pelletizing. In terms of its use, as long as it is not very sensitive to water, generally good underwater pelletizing can be granulated. Wide applicability and high output are its advantages.

Underwater granulation structure

Generally divided into: underwater cutting template, underwater cutting tool, sealed water chamber, underwater granulator, circulating water pump, transportation pipeline, dewaterer system, water temperature control system, etc.

Underwater pelletizing manufacturer

BKG: A long-established underwater cutting manufacturer, very professional. Many domestic underwater cutting versions are derived from the BKG version, ranging from a few kilograms/hour to dozens of tons/hour. BKG processed products have high precision, good heat treatment and durability. The price is on the high side. BKG does not serve as the host machine. If it is configured with a domestic extruder, they will require their own gear pump and discharge valve. If all are configured, the price will be very high.

W&P, Belstorff:Underwater pelletizing of small and medium-sized machines is relatively rare, and most of them are tonnage machines. W&P 25T/h underwater cutting, precision-cast inner curved surface of the water cavity, fine workmanship, and trustworthy brand.

Econ Austria, Automatik USA: Most of them are small and medium-sized, and each design has its own characteristics. Econ’s mold surface design is very good, and Automatik’s quick-release structure is impressive.

Maag: Gala brand has been acquired by Maag. The new underwater granulation system launched by the company is specially designed for the production of spherical pellets of compound materials, masterbatch, blended materials and recycled materials. It is suitable for a variety of polymers and thermoplastics, including polyolefins (LDPE, HDPE, PP), styrenic polymers (PS, SAN, ABS), polyoxymethylene (POM), polyester (PET, PBT, PEN) , polycarbonate (PC), polyurethane (TPU), hot melt adhesives, rubber, and natural and synthetic resins with production speeds up to 500 kg per hour. Overall, usage is good.

Nanjing Haisi Extrusion Equipment Co.,LTD.: Focus on the development, production and sales of supporting auxiliary equipment for twin-screw extruders. The main products are: pelletizer, side feeder, barrel, screw, etc. The underwater pelletizing system developed by the company has wide adaptability to different application fields and different users. Not only for thermoplastics, but also for all other raw materials with thermoplastic properties.



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