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Views: 0 Author: Site Editor Publish Time: 2025-07-28 Origin: Site
PET sheets, made from Polyethylene Terephthalate, are flat, versatile plastic sheets produced through extrusion. They're widely used across industries due to their strength, clarity, and recyclability. You'll find them in everything from food containers to protective packaging. Their ability to balance durability with aesthetic appeal makes them a top choice for manufacturers.
Why are PET sheets so popular? They're durable, eco-friendly, and adaptable. They resist wear and tear while maintaining a clear, glossy finish, perfect for showcasing products. Their recyclability also aligns with growing environmental demands, making them a smart choice for businesses aiming to reduce their carbon footprint.
PET sheets are fatigue-resistant, non-toxic, and odorless. They withstand chemicals, weather, and temperature extremes, making them ideal for both hot and cold applications. Their high transparency and gloss enhance product visibility, while their toughness ensures they hold up during handling and transport.
PET sheets are used in vacuum-formed products like food trays, toy packaging, and stationery cases. They're also critical in electronics for antistatic packaging and in retail for high-end cosmetic and gift boxes. Their versatility spans food, medical, and industrial applications.
Extrusion is the process of heating PET resin until it's molten, then pushing it through a die to form a continuous sheet. The sheet is cooled and shaped to the desired thickness. This method ensures consistent, high-quality output, essential for large-scale production.
Extrusion delivers efficiency and uniformity, making it ideal for producing PET sheets in bulk. It supports the use of recycled PET, reducing waste and costs. This process ensures sheets meet precise specifications, critical for industries like packaging.
Single screw extruders are simpler but less efficient for complex materials. Twin screw extruders, like those used by JWELL, offer superior mixing and processing, especially for recycled PET. They reduce material waste and improve sheet quality.
Precision in temperature, pressure, and material flow is crucial. Even minor errors can cause defects like uneven thickness or cloudiness. Advanced machines with automated controls ensure every sheet meets exact standards.
According to different raw materials and product applications, Jwell Machinery has developed different extrusion systems such as single screw, twin screw, single and twin screw co-extrusion to meet different market application requirement.
The current measured output of CJWS95 twin-screw extruder can reach 1500kg/h
The current measured output of 150 single-screw extruder can reach 800kg/h
✅ JWELL Single Screw vs. Twin Screw Extruder for PET Sheet
JWELL Single Screw Extruder for PET Sheet
JWELL Twin Screw Extruder for PET Sheet
✅ Recommended Applications Comparison
①Automatic Adjustment, Precise Thickness Control
Equipped with electric or thermal bolt adjustment mechanisms and linked with online thickness gauge to ensure real-time thickness correction.
②Polished Flow Channel, Optimized for PET Melt
Mirror-polished internal channels reduce melt residence time and degradation, ensuring sheet clarity and smoothness.
③Excellent Thermal Uniformity, No Dead Zones
Multi-zone heating ensures die lip temperature difference is within ±1°C, enhancing sheet uniformity.
④Fast Process Adjustments, Reduced Downtime
Allows quick format switching for varying sheet thickness and width, improving line flexibility and reducing downtime.
⑤Compatible with Multi-layer Co-Extrusion
Supports co-extrusion of A-B, A-B-A or more complex multi-layer PET sheets with uniform distribution.
⑥Made with High-Strength Alloy, Durable and Corrosion-Resistant
Constructed with high-grade die steel with heat and nitriding treatment, resistant to thermal and chemical stress with long service life.
⑦Seamless Integration with JWELL Extrusion Line Controls
Fully compatible with JWELL's PLC/HMI system for integrated control of die, extruder, and thickness gauge.
✅ Applicable PET Products
Highly transparent food-grade PET sheet (APET)
RPET sheet containing recycled materials
Co-extruded functional film (such as anti-fog, anti-static, barrier film layer)
Medical trays, blister sheets, etc.
①High-Precision Three-Roller Structure
Equipped with polished upper, middle, and lower rollers, arranged in vertical, inclined, or horizontal configuration to meet diverse process requirements.
②Stable Sheet Thickness Control
Fine-tuned roller gap control (±0.01mm) and integrated thickness gauge ensure consistent thickness and excellent flatness.
③Excellent Sheet Gloss and Surface Quality
Rollers are chrome-plated and precisely ground for excellent clarity and gloss, free from flow marks, bubbles, or crystal spots.
④Efficient Cooling System
Internal spiral water or oil circulation system controls roller temperature within ±1°C for uniform cooling and stress-free sheet.
⑤Advanced Tension Control & Synchronized Drive
Independent servo motors drive each roller with precise tension control to avoid wrinkles and misalignment, improving yield.
⑥Quick Lifting & Die Adjustment System
Quick lift of center roller and flexible die-to-roller distance adjustment for faster startup and easier cleaning/changeover.
⑦Modular Design, Compatible with Various Sheet Types
Supports single-layer or multilayer co-extrusion; suitable for APET, PETG, RPET, and more.
⑧Seamless Integration with Full Line Automation
Integrated with extruder, die, and thickness gauge via PLC/HMI for smart operation and recipe management.
①High-Precision Measurement
Uses infrared/laser or beta-ray online thickness gauge, with thickness tolerance controlled within ±0.003mm, ensuring consistent sheet thickness.
②Real-Time Monitoring and Feedback Control
Integrates with PLC system to collect real-time thickness data and send feedback to the extruder for closed-loop control of screw speed and die gap.
③Improves Yield and Reduces Waste
The automatic system reduces human error and minimizes defective products and edge trimming caused by thickness deviation.
④Data Visualization and Historical Analysis
Equipped with HMI or IPC to display thickness curves and export historical data for quality traceability and process optimization.
⑤Compatible with Multi-Layer Sheet Structures
Supports single-layer, double-layer, or multi-layer co-extruded PET sheets, automatically recognizing individual layer thicknesses.
⑥Energy Saving and Efficiency Enhancement
Precise thickness control reduces over-extrusion, saving raw materials and enhancing overall line efficiency.
⑦Stable System with Easy Maintenance
JWELL uses international brand sensors that ensure system stability and easy maintenance with accessible spare parts.
①Uniform and Stable Coating
Utilizes precise micro-concave roller or comma blade coating to achieve uniform, consistent silicone oil layers without streaks or skips.
②Highly Automated Control System
Integrated with JWELL's proprietary PLC system for automatic control of coating speed, thickness, and fluid ratios.
③Online Coating, Saves Labor and Time
Positioned inline at the end of the sheet line to avoid material transfer, contamination, and static issues—improving efficiency.
④Efficient Hot Air Drying System
Multi-zone adjustable hot air dryer ensures fast curing and drying of silicone oil without stickiness or residue.
⑤Single or Double-Sided Coating
Supports single-sided or double-sided coating according to customer needs, ideal for various applications.
⑥Energy-Saving and Environmentally Friendly
Features heat recovery and exhaust treatment systems to reduce energy use and VOC emissions in compliance with environmental regulations.
⑦Optional Inline Inspection System
Optional inline thickness gauges and CCD vision systems ensure traceable quality control.
⑧Compatible with Various PET Substrates
Suitable for APET, PETG, RPET, and other PET substrates with broad thickness range and application flexibility.
✅ Applications
Release film
Medical blister sheet
Label base film
Anti-adhesive protective film
Electronic packaging film
①Non-Stop Continuous Winding
Four winding stations rotate continuously, allowing non-stop reel changeover, greatly improving production efficiency.
②Precise Tension Control
Equipped with servo motors and closed-loop tension control to maintain consistent tension across varying reel diameters, ensuring flat, deformation-free sheet winding.
③Independent Floor-Type Design, Flexible Installation
Floor-type independent design allows flexible integration with various line widths and facilitates easier maintenance and plant layout.
④Multiple Winding Modes Available
Supports center winding, surface winding, or hybrid modes for various PET sheet thicknesses and applications.
⑤User-Friendly Operation with High Automation
Touchscreen interface with automatic length counting, reel changeover, cutting, and labeling, reducing labor intensity.
⑥Neat Winding and Clean Edges
Integrated edge position control (EPC) and pressure balancing system ensure neat, wrinkle-free winding with smooth edges.
⑦Designed for High-Speed, High-Output PET Sheet Lines
Supports winding speeds up to 80–120 m/min, perfectly matched to JWELL high-speed single or twin screw PET sheet extrusion lines.
Winding diameter can reach1500mm
①Typical Model Specifications
②Applicable Materials & Formulations
Applicable materials: Virgin PET, recycled PET flakes (RPET), blended materials (e.g., PET+PE, PET+GAG)
Typical formulation reference:
Virgin PET or flakes: 100%
Functional additives (release agent, brightener): 0.2% - 0.5%
Optional: masterbatch, anti-blocking agent etc.
③Energy Consumption Analysis
④Jwell Advantages vs Competitors
⑤Equipment Selection Advice
1.Advanced Technology with Rich Experience
JWELL has over 40 years of experience in plastic extrusion machinery, with hundreds of PET sheet lines running worldwide.
2.Complete Range of Solutions
Offers solutions ranging from single-screw with drying system to dehumidification-free twin-screw systems, fitting various budgets and production capacities.
3.High Automation, User-Friendly Operation
Integrated with PLC control, auto thickness gauge, auto winding, silicone oil coating, and anti-static systems for smart and easy operation.
4.Energy-Efficient and Environmentally Friendly
Twin-screw models save up to 30% energy with no drying required, and the full line complies with CE/UL and environmental standards.
5.Supports Various Sheet Structures and Materials
Compatible with APET, PETG, RPET, and supports single or multilayer (A-B, A-B-A) co-extrusion.
6.Global Service Network with Fast Support
JWELL has service centers and subsidiaries in China, Southeast Asia, India, Turkey, and Latin America, providing fast technical support worldwide.
7.Strong Customization and Proven Projects
Customizable for width, thickness, and functional modules like silicone coating, anti-static, film lamination, with many successful global references.
8.Reliable Quality with World-Class Components
Uses top-tier brands like Siemens, ABB, Schneider, NDC, and Scantech to ensure long-term reliability and stability.
Choosing JWELL means getting:High Output + High Stability + Smart Automation + Low Energy Consumption + Global Service
