Granulators
Granulators
Reprocessing Plastic Scrap into Valuable Regrind
WITTMANN Granulators
We have the right plastics granulator for every application: From blade granulators to screenless granulators with numerous features and for different throughputs.
Blade Granulators
G-Max Beside-the-press Granulators
Specifically designed for closed loop recycling of sprues/runners discharged from injection molding machines of up to 400 tons clamping force. G-Max granulators combine energy saving, a compact footprint and a unique damped cutting chamber for significant noise reduction, ensuring a quiet and efficient operation.
G-Max 9
The G-Max 9 hopper comes in 3 different styles. The granulator can be exactly matched to application needs, and can be modified in the field.
- The staggered rotor allows faster processing and provides a powerful cutting force
- The electrical panel can be relocated on the alternate side according to the placement of the granulator
- Regrind bin with fixed outlet
- High level sensor for regrind bin (Option)
- Locking in metallic particles can be prevented by placing a magnet along one side of the feeding hopper (Option)
- Grinding hot/warm materials with a water cooled cutting chamber (Option)
G-Max 13
- The 3 blade open rotor design with slanted knives provides shear slicing that produces uniform granulate
- Automatic belt tensioning allows for less preventative maintenance
- High level sensor for regrind bin
- Magnet to keep metals out of cutting chamber greatly extending life of the unit (USA STANDARD ONLY)
- Water cooled cutting chamber for processing hot materials (option)
G-Max 23 / G-Max 33
- Hybrid rotor design well suited for granulating heat sensitive resins that are still warm from processing.
- The open spaces between the rotating knives and rotor shaft provide unrestricted airflow through the cutting chamber
- Automatic belt tensioning allows for less preventative maintenance
- High level sensor for regrind bin
- Magnet to keep metals out of cutting chamber greatly extending life of the unit (USA STANDARD ONLY)
- Water cooled cutting chamber for processing hot materials (option)
ML 33: Medium-Size Blade Granulator
Efficient medium beside-the-press granulator for bulky parts from injection molding and/or blow molding applications with many optional features.
Screenless Granulators
S-Max Series of Beside-the-press Granulators
The economic choice with a compact design. Low speed (27 rpm @ 50 Hz) screenless technology for the most efficient and cost-effective grinding of engineered resins as well as styrenics, acrylics, and glass-fiber-reinforced materials.
S-Max 2 / S-Max 2 plus / S-Max 3
- Alarm sensor for regrind level provides audible and visual alarms, so the granulator will avoid overfilling the regrind bin.
- Viewing window to provide visibility to the cutting chamber during operation.
- Easy to maintain a high level of cleanliness because the regrind collection bin is made of stainless steel.
- Less blocking of material inside the downstream flexible hose due to an efficient evacuation of the regrind by an adjustable airflow on the outlet pipe and its slanted front cut.
- Ensuring vital space is kept next to the machine by the multi-positional swivel outlet pipe which makes easier connections to the flexible hose of the hopper loader.
- The soundproofed feeding hopper includes sound-dampening material that is placed between two sheets of stainless steel. This reduces noise when material hits the inside walls.
Junior Double Series of Screenless Granulators
for Central Scrap Reclamation: Junior Double 4, 6, and 8
Equipped with two rotors in the cutting chamber for large sprues and parts, the Junior Double is typically used offline, located away from the process. Material is fed into the granulator by a conveyor belt or by dumping the content of a box directly into the feed hopper of the granulator.
Junior Double Optional Features
- Granulation of thicker-walled or tougher plastics with ARS (Automatic Reversing System) to help avoid rotor blocking in case of jams.
- Granulation of large and nested sprues or parts causing bridging into the feeding hopper, the second shaft (S-Max 3 only) is a force feed system for pull-in and pre-break actions.
- Locking in metallic particles can be prevented by placing a magnet along one side of the feeding hopper.
- Grinding hot/warm materials with a water-cooled cutting chamber.
- Automatic emptying system with a high capacity vacuum loader.
Under-the-press Granulators
MINOR 2A and MAS 2A
The scrap is gravity-fed directly from the processing machine, requiring no conveying or manual handling. Multi-position swivel outlet pipes make an easier connection to the flexible hose of the hopper loader. The regrind collection bins are made of stainless steel. The two model provide a pre-cutting knife on the auger tube pre-empting wrap-arounds and screw jams.
Screenless Model MINOR 2A
- Low speed (27 rpm @ 50Hz) for the most efficient and cost effective grinding of glass-filled plastics.
- Allows no “longs” and provides uniform regrind with minimal fines for efficient re-processing.
- Low-speed single pass processing means less wear on cutting tools for reduced maintenance, low sound levels, and low energy consumption.
Blade Model MAS 2A
- Conventional model for processing soft to medium hard materials.
- 3-blade open rotor with adjustable rotating and stationary knives.
- Scissor-type cutting action for efficient processing of thin, soft, flexible materials.
- Open rotor allows for higher airflow through the cutting chamber for more efficient processing of hot scrap.
Optional Features
- Prevents locking in metallic particles via a metal detection system.
- Grinding hot/warm materials with a water cooled cutting chamber and/or auger.
- Regular granulation with Automatic Reversing System on the auger rotor to reduce any stalling in case of jams.
- High level sensor for regrind bin.
- Link to the IMM's doors with On/Off function of the granulator's screw.
- Remote control box to operate the granulator from the opposite side of placement.