Folhas de PE, also known as folhas de polietileno, are high-performance thermoplastics that offer a combination of resistência química, resistência mecânica, e formability. These properties make them indispensable across multiple industries — from processamento químico to embalagem, machinery, construção, e medical applications.
In this article, we explore the raw materials, production processes, e custom shaping methods (such as heat bending) that make PE plastic sheets so versatile and reliable.
🔬 Raw Materials and Resin Types
Folhas de PE are produced from high-quality polyethylene resins, primarily:
- Polietileno de alta densidade (PEAD) – rigid, impact-resistant, suitable for structural applications.
- Polietileno de Baixa Densidade (PEBD) – more flexible, often used in packaging and cushioning layers.
- Ultra-High Molecular Weight Polyethylene (UHMW-PE) – highly durable, low friction, used in wear-resistant applications.
These raw materials are selected based on end-use requirements such as chemical exposure, load-bearing needs, UV exposure, or food-grade certification.
🏭 PE Sheet Manufacturing Process
PE board production typically involves:
- Extrusion – The most common method, where polyethylene granules are melted and passed through a die to form continuous sheets.
- Compression Molding – Used for thicker, heavy-duty sheets by pressing melted PE under high pressure.
- Calendaring – Rolling technique for producing sheets with highly uniform thickness and surface finish.
- Cooling & Cutting – After formation, sheets are cooled and precision-cut into standard or custom sizes.
Each stage is strictly quality-controlled to ensure consistency in density, surface smoothness, e mechanical tolerance.
🔧 How to Heat Bend PE Sheets (For Custom Shapes)
While PE sheets are durable and rigid, they can also be heat-formed for customized angles and structures. Here's a simple guide to forming right angles in PE boards using a heated rod method:
- Mark the bending line on the PE sheet using a pencil.
- Heat a metal rod with a torch or lighter, ensuring even heat distribution.
- Apply Heat by placing the rod along the marked line until the plastic softens.
- Bend Gradually to avoid cracking. Avoid snapping to full angle in one step.
- Cool & Set the shape, letting the sheet rest naturally until it solidifies.
This method is commonly used in fabricating recipientes, protective housings, ducting systems, e custom liners.
🧪 Key Technical Properties of PE Sheets
| Propriedade | Specification (Typical) |
|---|---|
| Material | HDPE / LDPE / UHMW-PE |
| Densidade | 0.91 – 0.96 g/cm³ |
| Melting Temperature | 130–135°C |
| Resistência à tracção | 20–30 MPa |
| Elongation at Break | 600–900% |
| Absorção de água | <0.01% |
| Operating Temperature | -50°C to +80°C |
| UV Resistance | Optional (UV-stabilized) |
| Surface Finish Options | Smooth, Textured, Embossed |
🌍 Industries Using PE Sheets
- Indústria química: corrosion-resistant linings, tanks, trays
- Processamento de alimentos: cutting boards, conveyor parts
- Agricultura: irrigation tanks, water channels
- Packaging & Logistics: impact-resistant liners and pallets
- Mechanical Equipment: sliding pads, wear-resistant bushings
- Medical Use: non-toxic, sterilizable surface panels
✅ Why Choose Our PE Sheets?
- Industrial-grade virgin material
- UV-resistant e corrosion-proof
- Easy to fabricate, weld, or bend
- Custom thickness and sizing available
- Ideal for export and bulk orders
📩 Contact Us for Custom Orders or Technical Support
If you're looking for high-performance Folhas de PE for your business, we offer global export options, precision manufacturing, and dedicated engineering support.
👉 Explore our full PE product line here
📞 Contact us for wholesale pricing, datasheets, or OEM services
