MGB DensifiersThe MGB Densifier is a size reducing machine for bulky film or thin gauge sheet. The film or sheet is loaded into the chamber from the top of the machine in batches of 100-150 lbs. Once the material enters the hub, it comes into contact with a rotating knife that shreds it against stationary knives. This process creates frictional heat that shrinks the bulky film into small “popcorn” like pieces. Water is added for cooling and the steam is vented off resulting in dry dense material. The material is then ready to be used as is or for pelletizing, depending on the application.
The densifier cutting chamber is constructed of 3/8" thick, wear-resistant steel. The cutting chamber is 40" in diameter and 60" tall. The bottom of the cutting chamber is constructed of 1" solid steel plate for additional structural integrity. Ten replaceable bed knives are incorporated into the cutting chamber with one rotating knife. The rotating knife is directly coupled to a 250 or 300hp AC motor (480/3/60). The bottom seal of the shaft is a special design to prevent leakage and entry of water to the motor. Note: Operator's platform & air operated tilt table available upon request MADE IN THE USA |
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Chris (Christopher Ratini) Ratini - LINKEDIN
New & Used Plastics Machinery Sales, Purchasing & Service Representative at MGB Engineering Company Elk Grove Village, Illinois, United States |
Chris Ratini is a seasoned machinery and process-equipment specialist with over 20 years of experience supporting both domestic and international customers across the plastics industry and related manufacturing sectors. He is widely recognized for helping organizations identify cost-effective machinery solutions that align with specific production goals, technical requirements, and budget constraints.
More about Chris on this page: Machine Expert
More about Chris on this page: Machine Expert
1. What is an MGB Densifier and what does it do?
An MGB Densifier is an industrial size-reducing machine designed to shrink bulky film or thin gauge sheet material into dense, popcorn-like pieces. It uses a rotating knife against stationary knives to cut and create frictional heat, transforming the material for easier handling or further processing (such as pelletizing).
2. How is the material fed into the densifier?
Materials such as film or sheet are loaded into the top of the chamber in batches (typically around 100–150 lbs) where they are shredded and densified.
3. What happens inside the densifier during operation?
Once inside, the material contacts a rotating knife that shreds it against replaceable bed knives. The friction generates heat to shrink the material, while water cools and vents steam to produce dry, dense pieces.
4. What size and construction features does the cutting chamber have?
The cutting chamber is made from 3/8″ thick, wear-resistant steel, measuring about 40″ in diameter and 60″ in height, with a bottom constructed from 1″ solid steel for strength and durability.
5. What power options are available for the densifier?
The rotating knife is directly coupled to a 250 hp or 300 hp AC motor (480/3/60), providing robust cutting capacity.
6. Is water cooling required and how is it managed?
Yes — water is added to cool the shredded material, and steam generated during processing is vented off, resulting in a dry final product.
7. What maintenance or replaceable parts are involved?
Ten replaceable bed knives are incorporated into the cutting chamber, making maintenance and knife replacement straightforward when wear occurs.
8. Can the densified material be used immediately or does it need further processing?
Densified material can be used as-is for certain applications, or sent for pelletizing depending on the end-use requirement.
9. Are additional accessories or options available?
Optional operator platforms or air-operated tilt tables are available upon request to improve ergonomics and workflow.
10. Where is the MGB Densifier manufactured?
The densifiers are proudly made in the USA.
An MGB Densifier is an industrial size-reducing machine designed to shrink bulky film or thin gauge sheet material into dense, popcorn-like pieces. It uses a rotating knife against stationary knives to cut and create frictional heat, transforming the material for easier handling or further processing (such as pelletizing).
2. How is the material fed into the densifier?
Materials such as film or sheet are loaded into the top of the chamber in batches (typically around 100–150 lbs) where they are shredded and densified.
3. What happens inside the densifier during operation?
Once inside, the material contacts a rotating knife that shreds it against replaceable bed knives. The friction generates heat to shrink the material, while water cools and vents steam to produce dry, dense pieces.
4. What size and construction features does the cutting chamber have?
The cutting chamber is made from 3/8″ thick, wear-resistant steel, measuring about 40″ in diameter and 60″ in height, with a bottom constructed from 1″ solid steel for strength and durability.
5. What power options are available for the densifier?
The rotating knife is directly coupled to a 250 hp or 300 hp AC motor (480/3/60), providing robust cutting capacity.
6. Is water cooling required and how is it managed?
Yes — water is added to cool the shredded material, and steam generated during processing is vented off, resulting in a dry final product.
7. What maintenance or replaceable parts are involved?
Ten replaceable bed knives are incorporated into the cutting chamber, making maintenance and knife replacement straightforward when wear occurs.
8. Can the densified material be used immediately or does it need further processing?
Densified material can be used as-is for certain applications, or sent for pelletizing depending on the end-use requirement.
9. Are additional accessories or options available?
Optional operator platforms or air-operated tilt tables are available upon request to improve ergonomics and workflow.
10. Where is the MGB Densifier manufactured?
The densifiers are proudly made in the USA.

