martino communications
about the agency
client portraits
client list


home > news > details


BKG® WRP 1000 System from Nordson Corporation Incorporates Design Advances Based on Proven Technology from Nordson’s Underwater Pelletizer Range

MÜNSTER, GERMANY, February 16, 2021: A new-generation water-ring pelletizer (WRP) from Nordson Corporation provides uniform polymer flow, efficient heating, quick die plate change, and low dryer noise, enabling compounders and recyclers to increase productivity and enhance pellet quality.

While Nordson’s portfolio of WRP systems has a long history, the new BKG® WRP 1000 pelletizer represents an advance over previous WRPs and includes improvements adapted from the company’s widely used BKG underwater pelletizers (UWPs). As with other WRPs, the new system provides substantial advantages over strand pelletizers in that it is more compact, generates less dust, is not affected by strand breaks, is more capable of automation, and yields pellets of more uniform shapes and sizes.

In the WRP process, pellets are dry as they are cut from the polymer melt at the die plate, then are flung into a ring of circulating water, where they undergo initial cooling. Further cooling takes place in a chute that transports the pellets to the dryer. Prior to drying, a major part of the water and any agglomerates are removed.

Key benefits provided by the new BKG WRP 1000 system include:

? Rapid die plate change. The die plate has a split design, with separate heating flange and easily exchangeable insert. The design makes possible rapid color changes and easy cleaning.

? Efficient die plate heating. The die plate is heated electrically with heating cartridges and is designed for uniform polymer flow in the die plate holes.

? Efficient and low-noise pellet drying. The centrifugal drying system is adapted from the well-known pellet dryer used for BKG UWPs and guarantees low moisture levels of the pellets. Noise does not exceed 85 dB, and the dryer is easy to maintain and to clean with good access through the two large doors.

? Automated process control option. Besides a pre-wired version without control system for system-integrators, a stand-alone PLC-based system is available for an easy, independent operation and an easy upgrade of existing lines.

“The compounding and recycling industries are moving away from strand pelletizing because it is labor intensive, has a substantial footprint, generates dust, tends to yield pellet inconsistencies, and provides little scope for automation,” said Frank Asmuss, Business Development Manager, Pelletizing. “The BKG WRP 1000 water-ring pelletizer eliminates these problems for a capital investment that is mid-range between that of a strand pelletizer and our more high-performance underwater systems.”

Maximum operating parameters for the BKG WRP 1000 system are: 1) throughput of 1,000 kg/h (2,205 lb/h); 2) melt pressure of 210 bar (3,045 psi); and 3) melt temperature of 320 °C (608 °F). The pelletizer can be used to process a wide range of olefin and styrene polymers and copolymers with good melt strength and density up to 1.5 g/cm3, including moderately filled materials. Die plates are tailored to the specific material to be processed.


Nordson Corporation engineers, manufactures and markets differentiated products and systems used for the precision dispensing of adhesives, coatings, sealants, biomaterials, polymers, plastics and other materials, fluid management, test and inspection, UV curing and plasma surface treatment, all supported by application expertise and direct global sales and service. Nordson serves a wide variety of consumer non-durable, durable and technology end markets including packaging, nonwovens, electronics, medical, appliances, energy, transportation, construction, and general product assembly and finishing. Founded in 1954 and headquartered in Westlake, Ohio, the company has operations and support offices in more than 30 countries. Visit Nordson on the web at, @Nordson_Corp, or

Nordson Polymer Processing Systems provides customers with engineered components to melt, homogenize, filter, meter, and give shape to plastic and fluid coating materials. Nordson Corporation leverages the collective plastics industry experience from a series of strategic acquisitions to offer a uniquely broad portfolio of industry-leading technologies. Nordson delivers a full range of precision melt stream products — from screws and barrels for extrusion and injection molding — to filtration systems, pumps, and valves — to the extrusion dies and pelletizing systems to meet the constantly evolving needs of the polymer industry.

Nordson Corporation provides customers with local technical sales, service and remanufacturing capabilities through sales organizations and regional manufacturing facilities in over 30 countries. To learn more visit us at,,