Shrink Film Recycling and Washing Line

Product Overview

The shrink film recycling and washing line is a customized, full-process pre-treatment production line for waste plastic films, specifically designed for the recycling and reuse of various types of used films. It integrates crushing, washing, and dehydration functions into one system. This production line employs a five-stage closed-loop processing mode, effectively removing contaminants such as dirt, ink, and light or heavy impurities from the films, ultimately producing clean, dry film material that can be directly fed into subsequent pelletizing processes, providing high-quality pre-treated raw materials for plastic regeneration. As a custom-made product, it does not have a fixed price; instead, it is tailored according to the customer’s production capacity requirements, making it suitable for regeneration processing scenarios of different scales.

Technical Principles and Process Flow

The shrink film recycling and washing line adopts a five-stage closed-loop process—“crushing + frictional washing + flotation separation + rinsing + squeezing”—with each step designed to address specific contamination issues in used films, ensuring efficient and thorough pre-treatment results:

1. Coarse Crushing Stage: Loose or whole-roll waste films are conveyed by a belt feeder into a twin-shaft shredder, where they are coarsely cut into strips measuring 8–15 cm. This step effectively breaks down bridging problems caused by bulky, fluffy materials, providing an appropriate feed form for subsequent fine crushing and washing stages while preventing material buildup and equipment blockages.

2. Fine Crushing Stage: The shredded strip-shaped material enters a high-speed pulverizer, where it is further reduced into small fragments measuring 1–3 cm. This treatment increases the material’s surface area, facilitating easier removal of contaminants and laying a solid foundation for more thorough washing, thereby enhancing the overall cleanliness of the final product.

3. High-Speed Frictional Washing: The fragmented material is fed into a horizontal frictional washer, where spiral blades drive the material through high-speed collisions and self-friction, while flowing clean water helps vigorously remove surface dirt, dust, and loose ink. These detached impurities are discharged through side-wall screens along with wastewater, completing the initial washing process.

4. Flotation Separation and Rinsing: After frictional washing, the material flows into a primary flotation tank. In this tank, lighter impurities such as paper labels, floating dust, and lightweight plastics are carried away by the water flow, while heavier contaminants like mud and metal debris settle at the bottom. Regular drainage removes these settled residues. Meanwhile, the material moves forward via a screw conveyor, undergoing deep rinsing to further eliminate any remaining contaminants.

5. Secondary Clean Water Rinsing + Squeezing: Following flotation separation and rinsing, the material proceeds to a secondary clean-water rinsing stage. After removing residual fine impurities, it is sent to a screw-type dehydrator, where physical squeezing achieves dehydration. At the same time, a screen filters out any remaining fine residue, resulting in clean, low-moisture dry film material that directly meets the feed requirements of downstream pelletizing processes.

Performance Parameters

1. Processing Capacity: 500–2,000 kg/h, customizable to match the customer’s actual production needs, catering to regeneration processing demands of varying scales.
2. Dirt and Dust Removal Rate: ≥96%, effectively eliminating all types of dirt and dust contaminants from the film surface, ensuring high output cleanliness.
3. Moisture Content After Squeezing: ≤5%. Low-moisture dry film material can be directly fed into pelletizing processes, avoiding issues such as bubbling or broken pellets during granulation.
4. Water Recycling Rate: ≥88%, significantly reducing water consumption during washing, thus lowering water usage and wastewater treatment costs.

Core Advantages

1. Water-Saving and Cost-Effective: With a water recycling rate of ≥88%, wash water can be extensively recycled, reducing water consumption per ton of material by 80% and substantially cutting both water-use and subsequent wastewater treatment expenses, aligning with environmentally friendly and energy-efficient production principles.

2. Full-Process Automation: The entire production line features fully automated belt conveyance, eliminating manual material handling between stages. This reduces labor costs, boosts production efficiency, and enhances operational safety. Only two operators are required to manage the entire line, cutting labor costs by 65%.

3. Long-Lasting Wear-Resistant Materials: The friction chamber and screening components are crafted from wear-resistant materials, capable of enduring prolonged friction and impact, extending equipment lifespan and reducing maintenance and replacement costs, thereby ensuring stable, continuous operation of the production line.

4. Superior Washing Performance: With a dirt and impurity removal rate exceeding 96%, the clean, dry film produced can be directly fed into pelletizing processes, reducing the frequency of screen changes in downstream pelletizing by 75%. This not only improves pellet quality but also decreases downtime for maintenance, boosting overall process efficiency by 50%.

Core Value of the Product

1. Efficient, Thorough Pre-Treatment: Through its five-stage closed-loop process, the line delivers highly purified dry film material that meets pelletizing requirements, elevating the quality of recycled plastics and minimizing malfunctions during pelletization.

2. Significant Cost Reduction: High water-recycling rates lower water expenses, full automation cuts labor costs, and wear-resistant materials extend equipment life, reducing maintenance expenditures—helping businesses control overall regeneration costs across multiple dimensions.

3. Enhanced Production Efficiency: Fully automated belt conveyance eliminates manual transfers, improving process coordination by 50% while reducing the frequency of screen changes in pelletizing, ensuring smoother operations and boosting overall production capacity.

Target Customer Groups

This shrink film recycling and washing line primarily serves customers such as film recycling plants, resource regeneration industrial parks, large-scale plastic recycling enterprises, and packaging film manufacturers. These companies generate substantial quantities of waste film requiring treatment, and the line’s customizable design accommodates diverse production scales, helping them achieve efficient regeneration and reuse of their waste films.

Application Scenarios

This production line is suitable for pre-treating various types of film waste, including agricultural greenhouse films heavily contaminated with soil, industrial packaging stretch films, BOPP/CPP waste films, courier plastic bags, adhesive composite films, and more. Whether dealing with agricultural films laden with dirt or packaging films stained with ink and adhesives, the five-stage process effectively removes contaminants, transforming waste films into clean, ready-to-pelletize dry materials, making it widely applicable across diverse plastic film recycling and regeneration settings.

Solutions to Industry Pain Points

1. Addressing Frequent Screen Clogging Caused by Contaminated Films: With a dirt and impurity removal rate exceeding 96%, the line efficiently clears soil and other contaminants from films, reducing the frequency of screen changes in downstream pelletizing by 75% and minimizing downtime and maintenance associated with clogged screens, thereby enhancing the continuity of pelletizing operations.

2. Improving Low-Efficiency Manual Washing and Unstable Cleanliness: With fully automated operations and standardized processing procedures, the line not only boosts washing efficiency but also ensures consistent output cleanliness, eliminating quality fluctuations caused by manual washing.

3. Solving High Water Consumption and Expensive Wastewater Treatment: With a water recycling rate of ≥88% and a reduction in water use per ton of material by 80%, the line significantly lowers water consumption during washing, consequently cutting wastewater treatment costs and easing environmental compliance burdens on businesses.

4. Tackling Excessive Moisture in Wet Material That Causes Pellet Bubbling and Breakage: With a moisture content of ≤5% after squeezing, the dry film material can be directly fed into pelletizing processes, avoiding issues such as bubbling and breakage caused by overly moist material, thereby improving pellet quality and yield.

Frequently Asked Questions (FAQ)

Q1: Is this shrink film recycling and washing line available in a fixed specification? How is the price determined?
A: This product is custom-made and does not have a fixed price. Pricing is tailored to the customer’s production capacity requirements. Please specify your production scale, and we will provide you with a corresponding solution and quotation.

Q2: What types of waste films can this production line process?
A: It can handle agricultural greenhouse films heavily contaminated with soil, industrial packaging stretch films, BOPP/CPP waste films, courier plastic bags, adhesive composite films, and other types of film waste, meeting diverse pre-treatment needs for various kinds of used films.

Q3: Does this production line consume a lot of water? How does it achieve water conservation?
A: The line boasts a water recycling rate of ≥88%, allowing wash water to be extensively reused. Water consumption per ton of material has been reduced by 80%, significantly cutting overall water usage compared to traditional washing equipment and effectively lowering water-related costs.

Q4: Can the dry film material produced be directly used for pelletizing?
A: Yes. After processing, the dry film material has a moisture content of ≤5% and a dirt and impurity removal rate of ≥96%, meeting all requirements for pelletizing. It can be directly fed into downstream pelletizing processes without additional treatment.