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Spanish Heavy duty plastic shredder machine is used to process various plastic waste into plastic fragments, which is widely used in plastic recycling, reuse and resource processing. According to different designs and uses, plastic shredder can be divided into single shaft plastic shredder, double shaft plastic shredder, four shaft plastic shredder, plastic crusher and special plastic shredder.
Type 1: Single Shaft Plastic Shredder
The single shaft plastic shredder is a device that uses the shear force and thrust generated by the rotation of the blade to break plastic waste into small particles. Its main structure includes a knife disc, a fixed knife, a hydraulic system and a feeding system.
The hydraulic system pusher of the single shaft plastic shredder provides a stable thrust to ensure that the material can smoothly enter the working area of the blade and complete the crushing. Through the interaction between the rotating blade on the main shaft and the fixed blade, the plastic waste pushed into the shredding chamber is torn, cut and squeezed, thereby crushing it into smaller particles.
Особенности:
- Low vibration, noise and dust
- The pusher can assist in feeding and improve efficiency
- The discharge screen helps control the size of the final crushed material
- Strong structure
Приложение
Mainly used for processing solid block plastics (such as PET bottles, PP pipes), films, foam blocks, fibers, paper, etc. Widely used in the plastic recycling industry, such as the reprocessing of waste plastic bottles and industrial waste.
Type 2: Double Shaft Plastic Shredder
Double shaft plastic shredder is a device that uses two rotating shafts and multiple blades to work together to crush plastic waste into small particles through shearing and tearing.
The two rotating shafts of the double shaft plastic shredder drive the fixed blade and the movable blade respectively. The shearing and tearing forces generated by high-speed rotation quickly crush the plastic waste entering the machine into small pieces. Subsequently, the material is further screened through the screen to obtain particles of the required particle size.
Особенности:
- Powerful shearing ability, capable of handling plastic waste of various hardness, including soft and hard plastics, composite materials, etc.
- Efficient production, high output and good stability, suitable for large-scale industrial applications.
- Built-in safety system with automatic overload detection and automatic reversal function.
- Good self-cleaning function through reverse rotation.
- Preparatory pre-crushing ability, good at preliminary crushing of large pieces of waste.
Приложение
Double-shaft shredders handle large, bulky plastic waste, including:
- Baled plastic film and sheet: Rolls or bales of PE/PP film, plastic bags and sacks can be torn down (the wide feed accepts entire bales) .
- Rigid plastics (large parts): Thick plastic drums, buckets, tanks, crates, and packaging containers. For example, PP/PE drums, IBC containers, pallets.
- Thick-walled plastic scrap: Oversized thermoformed parts, bulky injection-molded components and foam blocks.
- Industrial plastic waste: Pelletizing or washing lines often use double-shaft machines to pre-cut large pieces (pallets, furniture, pipes) into smaller chunks.
- Mixed-material loads: In recycling, double-shaft units can shred mixed waste containing plastic, wood, rubber, metals or fiber simultaneously, making them versatile pre-processors.
Type 3: Four Shaft Plastic Shredder
Four shaft plastic shredder is a more complex device, usually composed of four rotating shafts, which can provide stronger shearing and tearing forces and is suitable for more difficult shredding tasks.
Four shaft plastic shredder uses the synergistic action of four rotating shafts to shear and tear the plastic waste multiple times to a very small particle size. This design is particularly suitable for processing high-viscosity or high-hardness materials.
Особенности:
- Extremely strong shredding capacity, capable of handling very hard or complex plastic waste.
- Efficient and durable, suitable for large-scale industrial production.
- Fine and consistent shredding quality can be achieved through the screen.
- No push system is required, and it has self-feeding ability through gravity, which simplifies the equipment.
Приложение
- Applicable Plastic Products: Four-shaft shredders handle large, bulky, or tough plastic waste especially where fine, uniform output is needed. Typical applications include:
- Industrial plastic waste: Long, bulky items like lumber, plastic pipes, large panels, or construction debris containing plastic. The large hopper and four shafts let it process “bulky and long items” easily (Robust four-shaft shredders for industrial applications).
- Automotive and appliance plastics: Thick plastic parts (e.g. bumpers, door panels, dashboards).
- Rigid packaging and containers: Large crates, pallets, or big thermoformed parts. Anything that must be shredded finely in one step.
- Mixed waste with high throughput: Four-shaft machines are often used in Material Recovery Facilities for mixed plastic and similar waste, because they can continuously process high volumes.
Type 4: Plastic Crusher
Пластиковая дробилка is a kind of equipment specially used for the preliminary crushing of large pieces of plastic waste, usually as a pre-processing equipment for the subsequent crushing process.
Plastic crusher uses high-speed rotating blades or hammers to preliminarily crush large pieces of plastic waste, reducing their volume for subsequent crushing or recycling.
Особенности:
- Fast cutting speed.
- Simple structure, easy to operate and maintain.
- Wide power/capacity range.
- Equipped with safety devices such as protective hopper cover.
Приложение
Plastic crushers are typically used on rigid and semi-rigid plastic waste including:
- PET bottles and containers: Shredding bottles and jars into small flakes.
- Plastic films and bags: Pulverizing or chopping films, shrink wrap, and bags (though films often require specialized low-speed shredders, some crushers can handle them).
- Plastic piping and profiles: Rigid PVC or HDPE pipe offcuts can be crushed to granules.
- Mixed post-industrial scrap: Clean, single-polymer scrap from manufacturing (sheets, caps, large injection parts) are often run through crushers to save material. For example, crushed plastic can be reprocessed into packaging, household goods or other products.
Type 5: Specialized Industrial Heavy Duty Plastic Shredders
Specialized plastic shredders are custom-designed shredding machines made to handle particular types of plastic products that traditional shredders struggle to process efficiently. One important type is the Plastic Pipe Horizontal Double Shaft Shredder, developed specifically for shredding large, long plastic pipes and profiles without the need for cutting them into smaller pieces beforehand.
Working Principle
Taking the Plastic Pipe Horizontal Double Shaft Shredder as the main example:
- The shredder features two parallel shafts mounted horizontally.
- Large plastic pipes (such as HDPE, PVC pipes with diameters up to 1200 mm or more) are placed directly into a specially designed horizontal feed trough.
- No need to cut the pipes first — the machine’s large opening and strong gripping action allow it to catch and shred long pipes or profiles directly.
- Hydraulic cylinders or roller feeding systems push the pipes slowly toward the rotating cutters.
- The two shafts rotate in opposite directions at low speed and high torque, shearing, tearing, and crushing the pipe material between hooked or toothed blades.
- Once shredded, the smaller pieces fall through a screen or exit the bottom for further processing or collection.
Приложение
Specialized shredders are best for large, long, and heavy plastic products that are difficult for conventional shredders to handle. Typical materials include:
- Large Diameter Plastic Pipes: HDPE, PP, PVC pipes for water, gas, or sewage systems (e.g., up to 1200 mm or even 2000 mm diameter).
- Plastic Profiles and Beams: Long PVC window profiles, plastic construction beams, cable conduits.
- Plastic Sheets and Panels: Thick plastic board offcuts or construction sheeting.
- Large-dimension Plastic Tanks and Containers: Oversized chemical storage tanks made of plastic.
- Bundles of Thin-Wall Tubes: Groups of small tubes or pipes bundled together for bulk shredding.
- Other Special Projects: Any particularly long, oversized, or thick-walled plastic pieces where standard vertical-feed shredders would be inefficient.
