POWERBELT

Automatic and continuous screen changer – including post-industrial recycling

Powerbelt is an automatic and continuous screen changer. You can run up to medium-contaminated plastic without any process interruption.

HOW POWERBELT WORKS

Once Powerbelt is started, the screen moves through it advancing in the melt flow towards the exit, retaining the filtered contaminants contained inside the molten polymer. During the extrusion process, the screen advances with no mechanical backing. Screen changing is produced by the switchover between cooling and heating of the molten polymer on a 4-steps cycle.

  1. Cooling – Cool water circulates in the entry and exit sections. The molten polymer, if cooled, solidifies and creates a pressure-tight seal capable of standing internal pressure, thus generating a barrier between the melt flow and the air – the polymer is kept in and the air out.
  2. Heating – When excessive contaminant accumulates, a screen advancement is required; the end part of the solidified plug is heated up and the melt seal is softened, ready to be moved onwards by the melt pressure.
  3. Screen Advance – The melt seal on the exit section is pushed toward the exit by the melt pressure. The advancing screen is slowly replaced by a new entering screen, which is obviously clean and free from contaminants.
  4. Screen Advance Interruption – Whenever the molten polymer is free from contaminants, the screen advance is no longer required and the heating elements on the exit side are switched off. The polymer solidifies, sealing the exit opening and interrupting the screen advance.

POWERBELT ADVANTAGES

  • Continuous production, no operator assistance required while running
  • Irrelevant pressure drops while screen changing is on
  • No motor or power-drive mechanical parts
  • No maintenance interventions required, except the screen roll replacement
  • 24/7 uninterrupted operation
  • Automation level increase, easily programmable and user friendly controls
  • Full control of your extrusion process
  • reduction of system downtimes
  • Reduction of maintenance costs
  • Money investement in a virtually indestructible equipment
  • Reduction of energy consumption

CONTINUOUS AND AUTOMATIC

Powerbelt is a high-quality automatic and continuous screen changer for thermoplastics extrusion systems. It has no motor or moving mechanical parts, it guarantees continuous production, and virtually requires no operator assistance while running.

MATERIAL SEALING

Powerbelt is designed and built to prevent any possible leakage. The material itself provides perfect sealing.

HIGHEST PRODUCTION QUALITY

Improve the quality of your plastic production. At screen changing, pressure drop is irrelevant, with no air contact.

NO MAINTENANCE

Without moving or power-driven mechanical parts, Powerbelt requires no maintenance interventions, except for screen roll replacement.

ADVANCED CONTROL SYSTEM

Thanks to its advanced control system, Powerbelt is fully automatic; while filtering, Powerbelt screen changer automatically operates screen advance, depending on the material contamination level. Time and pressure are settable parameters; dual or manual control modes are available. All basic process parameters can be monitored from the control panel.

TOP PERFORMANCE FOR BLOWN AND CAST FILMS, AND MORE

Powerbelt is most suitable for processing medium-contaminated materials, such as post-industrial waste. This new version of Powerbelt screen changer is an excellent solution for extrusion lines producing a wide range of products: blown and cast films, thermoformed foil, foamed sections, oriented bands, yarns, wires, pipes and many other products.

DESIGNED FOR STABILITY AND FOR CONTINUOUS EXTRUSION

Powerbelt is the right filtering choice for all products requiring both continuous extrusion and extremely stable process conditions. Powerbelt is designed to prevent pressure variations while running and at ordinary maintenance stages: during screen replacement, pressure drop is reduced to irrelevant values.

NO OPERATOR ASSISTANCE

Powerbelt has no motor, gears, hydraulically or pneumatically operated components, and no power-driven parts, except for the screen itself, thus being virtually indestructible. With no need for manual replacement of screen, it does not require any operator assistance.

TECHNICAL DATA

Processing: Continuous flow, Automatic
Nominal diameter breaker: From 30 to 200 mm (from 1-1/8” to 8”)
Filtering area: Up to 132 cm² (20.5 in²)
Material contamination: Medium, post-industrial recycling
Hourly capacity: Up to 600 kg/h (1.320 pounds)
Polymers: HDPE, LDPE, LLDPE, PP, ABS, PS, Nylon, and more
Products and Applications: Suitable for most of products and applications
Max energy consumption: 20 kWh

 

Powerbelt screenchanger - Cofit

Video

3D ANIMATION

Watch a 3D animation with detailed explanations of Powerbelt internal operation

 

POWERBELT ON THE JOB

Watch Powerbelt on the job, run with regrind HDPE

POWERBELT IN ACTION / 1

Watch Powerbelt in action: the screen belt is slowly advanced as it filters the melt flow, part 1

POWERBELT IN ACTION / 2

Watch Powerbelt in action: the screen belt is slowly advanced as it filters the melt flow, part 2

SET-UP: LOADING SPRING

 

 

POWERBELT SET-UP

ASSEMBLING THE ENTRANCE BLOCK

Powerbelt set-up: watch how to assemble the entrance block

POWERBELT: INSERTING SCREEN BELT

Powerbelt set-up: watch how to insert screen belt

TECHNICAL DETAILS

Powerbelt technical details - Cofit

Download the Powerbelt technical specification

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3D SKETCH

Download Powerbelt 3D sketch

TRAINING

Cofit screenchangers training

We take care of your personnel training. When a Scrapeaway screen changer is set up and ready to start, your personnel is trained by Cofit specialists on machinery configuration and operation.


Cofit deals with research, engineering, manufacture and distribution of automatic and continuous screen changers for post-consumer and post-industrial recycling materials, too.

Contact us to test your materials with our screen changers, download 3D schemes of our products, contact us to upgrade your extrusion system, ask us for more info about any product; follow us on Linkedin and Twitter.