• PT Youtube
  • PT Facebook
  • PT Linkedin
  • PT Twitter

Compounding: Closed-Loop System for Coex Film Reclaim

Facebook Share Icon LinkedIn Share Icon Twitter Share Icon Share by EMail icon Print Icon

New system permits reclaim of multi-layer production scrap at rates up to 100%.

Coperion has developed a closed-loop system for recycling post-industrial multi-layer film, a recovery process that historically has been challenging and complicated. The recycling system consists of bulk material handling equipment, a Coperion K-Tron feeding system and Coperion’s ZSK Mc18 twin screw extruder.

In the Coperion setup, multi-layer production scrap would first be shredded, then fed into the ZSK extruder via pneumatic conveying and highly accurate feeding from Coperion K-Tron. In the co-rotating ZSK Mc18 twin screw extruder, material is homogenized and devolatilized. Coperion says the extruder is designed to “gently”  and thoroughly mix the material even at very high throughput rates, generating consistently high product quality.

Following homogenization, the recycled material is added back into the production process at rates up to 100%.


Closed-Up Multi-Layer Film Reclaim System



  • Follow These Tips to Select the Right Pelletizer

    Start by assessing the status quo, as well as defining future needs. Develop a five-year projection of materials and required capacities. Short-term solutions very often prove to be more expensive and less satisfactory after a period of time. Most of all, know your options.

  • Enhancing Biopolymers: Additives Are Needed for Toughness, Heat Resistance & Processability

    Plastics are going “green,” but they will need some help to get there. Biodegradable polymers derived from renewable resources are attracting lots of interest and publicity, but that enthusiasm is counterbalanced by persistent questions of availability, cost, performance, and processability. All these issues are inter-related: Increasing demand will lead to more capacity, which will presumably lead to lower prices. But the foundation is market demand, which ultimately depends on whether biopolymers will have the performance properties and processability to compete with existing non-renewable plastics.

  • Tips and Techniques: Compounding 10 Ways to Improve Twin-Screw Compounding Performance

    There are many techniques known to operators and plant engineers for increasing the performance of a twin-screw compounding extruder.