PE, PP Film/Woven Bag Recycling Line Technical Guide

PE and PP film waste is one of the most common but also one of the most difficult material streams in plastic recycling. In real projects, the feedstock may include PE plastic film, PP woven bags, waste agricultural films, waste soft drip irrigation pipes, industrial packing films, and supermarket packing films. Benk Machinery’s PE/PP Film/Woven Bag Recycling Line is designed for exactly these mixed film-based materials, with a process route that combines a shredder, crusher, friction washer, floating tank, and squeezer.

The reason this line matters is simple: loose film and woven-bag scrap are light, bulky, contaminated, and often inconsistent in shape. Without a dedicated PE/PP film washing route, material handling becomes unstable, washing efficiency drops, and the final flakes may still carry moisture or impurity load that harms downstream processing. Benk states that the line is built for efficient decontamination and that the washed output can be used alone or blended into reprocessing, including new film blowing applications.

Why PE and PP Film Need a Dedicated Recycling Line

A PE/PP film stream is rarely “clean film only.” It can contain dust, sand, printing ink, adhesive residue, labels, moisture, and sometimes mixed foreign material from collection and baling. Agricultural film, for example, often carries field contamination; industrial packing film may carry dust and processing residue; woven bags may contain trapped dirt in the fiber structure. That is why a dedicated film recycling line is more than a convenience; it is a process necessity.

The engineering challenge is not just washing, but managing the behavior of a light, flexible, low-bulk-density material. Film tends to bridge, float, wrap, and clog if the line is not designed for its physical characteristics. A proper PE PP film washing line therefore combines reduction, washing, separation, and dehydration in a sequence that makes the material measurable and controllable before the next stage.

Core Process Flow: From Waste Film to Recycled Flakes

The product page describes a practical line composed of a separator, crusher, cold and hot washer, dewaterer, dryer, and packing system. In other words, this is not a single-machine solution but a complete process chain. Each module handles one job: sorting, size reduction, contamination removal, moisture reduction, and final stabilization.
The cold washing stage helps remove loose surface dirt and general contaminants, while the hot washing stage is valuable when the incoming material carries oils, sticky residues, or stubborn contamination. The friction washer improves contact between the washing medium and the film fragments, and the floating tank helps separate material fractions according to density behavior. For film and woven-bag recycling, this staged logic is what turns a difficult waste stream into usable flakes.
The squeezing section is equally important. Film materials hold water easily, and if the moisture remains too high, downstream storage, transport, and reprocessing all become less stable. Benk’s line is designed to reduce moisture at the end of washing so the final product can be used more reliably in reprocessing or blending applications.

Technical Characteristics That Improve Line Stability

The line is described as having a high automation level to reduce labor cost and support high output. It also uses a PLC control system for convenient operation and monitoring. For a plant handling large volumes of PE and PP film waste, this kind of automation matters because film recycling is sensitive to fluctuation in feeding, washing load, and dehydration balance.
Another important detail is material selection. Benk states that all parts contacting material and water are made of high-quality 304 stainless steel. In recycling equipment, this helps with corrosion resistance, service life, and hygiene stability, especially when the line works with wet washing, friction washing, and long operating cycles.
The page also highlights an “ideal impurity removal effect.” In practical terms, that means the line is not only trying to shrink waste, but to produce a cleaner flake stream with better consistency for secondary processing. When the contamination profile is better controlled, the output becomes more suitable for reprocessing, blending, or new film blowing applications.

Capacity, Workshop Planning, and Utility Demand

Benk gives a capacity range of 300–1500 kg/h for this PE/PP Film/Woven Bag Recycling Line, and the technical table on the page provides sample configurations for 300 kg/h and 500 kg/h. For 300 kg/h, the listed workshop size is 40 m × 10 m × 6 m, installation power is 171 kW, and water consumption is 3 ton/h. For 500 kg/h, the workshop size remains 40 m × 10 m × 6 m, installation power rises to 245 kW, and water consumption rises to 4 ton/h.
The page also lists ancillary staff as 6 persons for both sample configurations. Final product moisture is shown as max 8–10%, bulk density as 0.1 g/cm³, particle size as 30–60 mm, and total impurity content as 150 ppm. These figures are important because they define what the line is trying to produce: not just washed film, but a standardized recycled flake suitable for consistent downstream use.
From an engineering planning perspective, these numbers indicate a continuous production philosophy. As throughput increases, power demand and water demand rise accordingly, while manpower stays relatively controlled. That is a typical sign of a line designed for industrial-scale recycling rather than manual batch cleaning. This is an inference based on the published capacity and utility figures.

Conclusion

A PE/PP Film/Woven Bag Recycling Line is fundamentally a material-conditioning system. It takes a light, irregular, contaminated waste stream and turns it into a cleaner, more stable, more reusable recycled flake stream through shredding, crushing, washing, floating separation, dewatering, and drying. Benk’s published layout, component list, and technical data all point to a continuous industrial solution rather than a simple cleaning machine.
For recyclers, the real question is not whether the line can process PE and PP film, but whether it can do so continuously, with manageable utility demand, stable moisture control, and output that fits downstream reuse. On that basis, this line is positioned as a practical bridge between waste collection and value-added recycling.