Screw Dewatering Press
Screw dewatering press, in today’s fast-paced recycling and plastic manufacturing industries, efficiency and quality are everything. One critical step that significantly impacts the final product is plastic drying. Moisture in plastic after washing, agglomeration, or processing can lead to major defects in molding or extrusion. This is where the plastic conical screw dryer machine comes in.
Combining the power of a conical screw dryer, conical dryer, and optional screw press dewatering functions, this machine is a game-changer. Whether you are dealing with plastic flakes, film, or agglomerates, this dryer ensures your material is dry, stable, and ready for the next step.
What is a Plastic Conical Screw Dryer Machine?
A plastic conical screw dryer machine is a vacuum or atmospheric dryer used to remove moisture from thermoplastic materials like LDPE, HDPE, PET, and PP. It features a cone-shaped vessel equipped with a rotating screw. As the screw lifts the plastic materials, gravity pulls them down, creating a continuous movement. This ensures uniform exposure to heat and air, drying the materials efficiently without overheating them.
The drying mechanism is typically gentle and efficient, which is vital for preserving the quality of recycled plastic. The system is based on conical dryer technology, with an added screw mechanism for enhanced performance.
How Conical Screw Dryer Technology Works
The conical screw dryer utilizes a combination of slow mixing and vacuum (or hot air) to remove moisture. The rotating screw inside the conical vessel moves the plastic material in a helical flow, lifting it upward and allowing it to fall back down by gravity. This continuous circulation ensures all particles are evenly dried.
Unlike flat dryers or high-heat ovens, the conical dryer approach reduces thermal stress and maintains the plastic’s integrity. It is especially useful for lightweight materials like plastic films and agglomerates.
Screw Press Dewatering: The Perfect Pre-Drying Solution
In many industrial setups, materials first go through a screw press dewatering machine before entering the conical screw dryer. A screw press dewatering system squeezes excess water from the plastic using mechanical pressure, reducing the initial moisture content.
This process includes machines like the:
- Sludge screw press
- Dewatering press
- Dewatering screw press machine
These machines are perfect for removing bulk moisture from plastic washed in water-based cleaning systems. Once mechanically dewatered, the material goes through the conical dryer to eliminate remaining traces of moisture.
Why Combine Dewatering and Drying?
Combining a screw press dewatering machine with a plastic conical screw dryer offers multiple benefits:
| Process Step | Purpose | Equipment Used |
|---|---|---|
| Mechanical Dewatering | Removes large volumes of water | Screw Press Dewatering |
| Fine Drying | Eliminates residual moisture | Conical Screw Dryer |
| Final Output | Dry, flowable plastic ready for recycling | Dryer Discharge |
This approach reduces drying time, cuts energy consumption, and ensures a higher-quality final product.
Advantages of Using a Conical Screw Dryer for Plastic
- Uniform Drying: Continuous circulation ensures even moisture removal.
- Low-Temperature Operation: Protects sensitive plastics from degradation.
- Energy Efficiency: Especially when combined with mechanical dewatering screw press technology.
- Compact Design: Takes up less space in processing plants.
- Versatile: Handles plastic flakes, film, fibers, and agglomerates.
Applications of Plastic Conical Screw Dryer Machines
These machines are widely used in:
- Plastic recycling facilities
- Film recycling plants
- Pelletizing operations
- Plastic compounding units
- Blow molding & extrusion pre-processing
They are often paired with dewatering press systems and extrusion lines to streamline the workflow and improve throughput.
Conical Dryer vs. Conventional Dryers
| Feature | Conical Dryer | Conventional Dryer |
|---|---|---|
| Drying Efficiency | High | Medium |
| Space Requirement | Compact | Large |
| Thermal Sensitivity | Very Low | Medium to High |
| Mixing Capability | Gentle, thorough | Minimal |
| Suitability for Plastics | Excellent | Limited |
The conical screw dryer clearly stands out as the more effective and efficient choice for modern plastic processing.
The plastic conical screw dryer machine is an essential tool for any plastic recycling or processing operation. Its ability to gently and efficiently remove moisture, especially when paired with screw press dewatering, ensures superior material quality and smooth downstream processing.
Whether you’re a recycling facility or a plastic manufacturer, investing in conical dryer and dewatering screw press machine technology is a smart move toward improving efficiency, reducing waste, and delivering top-quality recycled plastic.
FAQs
What materials can be dried in a plastic conical screw dryer machine?
Mainly plastic flakes, film, agglomerates, and other thermoplastics like LDPE, HDPE, PET, and PP.
Is it necessary to use a screw press dewatering machine before drying?
Not mandatory, but highly recommended for high-moisture materials as it speeds up drying and saves energy.
How long does it take to dry plastic with a conical dryer?
Drying time varies depending on material and moisture content but typically ranges from 30 to 90 minutes.
Can I use the same dryer for different plastic types?
Yes, the conical screw dryer is versatile and suitable for various plastics with minimal adjustment.
What is the main benefit of a conical dryer over a hot air dryer?
It offers more even drying, better control, and lower energy usage, especially for heat-sensitive materials.
Advanced Plastic Agglomeration Machine
– Different capacity solutions according to demand.
– Solution according to our customer’s budget.
– Low energy consumption possible.
As Technic Machines we exported our machines more than 70 countries until today including conical screw dryer machines. Our plastic screw press dewatering are used for many years by our customers. We offer to our customers always optimum solution conical dryer machine with optimum price level. Our customers have good production results during their recycling process with our screw press dewatering machine.
With our plastic conical dryer machine we can provide also the complete finished recycling line. From scrap to recycled plastic granule. So you can have plastic recycling machines as complete recycle system, from bottle scraps to finished granule product with our complete recycling line solution.
As Technic Machines, our one of the most important priority is to meet with our customer demands. So, we inform our customers about the possibilities and impossibilities at the beginning of our conversation. For example about possible plastic recycling capacity, precision of plastic recycle processes, plastic scrap feeding range, possible production range of conical screw dewatering machine and etc. We always try to do our best for informing our customers about the correct parameters. Our customers receive correct informations on our screw dewatering machines and other machines.
