At PRNZ, we focus on processing post-industrial and post-consumer plastic waste into high-quality recyclate resins that are reintegrated into new manufacturing applications. Our primary aim is to close the loop on uPVC and HDPE materials, ensuring they are reused rather than downcycled. This approach supports a circular economy and reduces the need for virgin plastic production.

Our processing capabilities include:

Initial Sorting & Consolidation

We rely on segregated feedstock to reduce the need for sorting on-site. Materials must be pre-separated before arrival to ensure streamlined processing.

Shredding & Washing Process

Once received, materials are shredded into uniform pieces.

Our high-speed washing systems remove contaminants, preparing the plastics for granulation.

Granulation & Pelletising

The shredded plastics are granulated into pellets of the right size. This step ensures they are ready for further manufacturing into new products.

Reintegration into Manufacturing

The recyclate is used by Aliaxis to create uPVC and HDPE products, such as pipes. This process supports a more sustainable circular economy.

Our Equipment

To achieve the highest standards of recycling, we use advanced machinery at our Maurice Road facility, including the J Series large pipe shredders and high-efficiency washing systems.

J Series - Large Pipe Shredder
Our J1200 Pipe Shredding system is designed for large plastic pipes with up to 6-meter lengths and 1200 mm diameters. This multi-rotor machine features:
- High shear cutting between the rotor and counter knives, ideal for shredding thin-walled pipes.
- A robust, energy-efficient design with hydraulic systems for optimized feeding and reduced operational costs.
- Hydraulic opening devices for easy maintenance and safety features like auto-locking feed chambers.
HDPE Bottle/Container Washing System
Our HDPE washing line is built to handle a variety of rigid plastics, including bottles and containers. Key features include:
- Efficient use of water and minimal evaporation losses.
- High-speed washing systems that ensure contaminants are removed effectively.
- Mechanical and thermal drying systems to minimize moisture in the end product.
PVC Pipe Shredding System

Our PVC pipe shredding system, similar to the J Series, processes a wide range of PVC pipes efficiently with adjustable features for different material types.
BH Series - Single Shaft Shredder

The BH Series is a heavy-duty shredder designed for handling untreated waste material streams, turning them into coarse or medium-sized fractions for further processing.
GXC Series - Heavy Duty Granulators
These granulators are capable of handling high-throughput processing and are designed to deal with tough materials like profiles, thick sheets, and flexible materials such as films and woven bags.
- Strong welded construction from heavy gauge steel plate.
- Inclined, split cutting chamber design.
- Oversized, outboard spherical rotor bearings – prevents bearing damage due to product migration.
- Precision machined rotors (Forward set V-Rotor as standard).
- Manual, electric and hydraulic chamber opening mechanisms - quick access to the cutting chamber for maintenance and machine clean downs.
- Replaceable wear plates at either end of the rotor shaft.
- Stand Alone Electrical Control Panel - using quality Schneider components and Siemens PLC’s.
- Tested, Approved and Certified to the applicable CE safety standards.

Closing the Loop on Plastics

uPVC and HDPE are highly durable materials that can last for up to 100 years in building and infrastructure applications. By recycling these plastics and reintegrating them into new products, we significantly reduce the need for virgin materials, contributing to a more sustainable future.

Our investment in recycling infrastructure — including the upcoming facilities in Auckland and Canterbury — is part of our commitment to reducing plastic waste in New Zealand.