All about PE

Polyethylene (PE) sheet is one of the most widely used and cost-effective thermoplastic engineering plates in the global industrial field. With non-toxic, odorless, wax-like surface texture and excellent comprehensive performance, PE plastic sheets have become essential materials for chemical, mining, food processing, marine and mechanical manufacturing industries.

This complete guide covers PE sheet definitions, core advantages, classifications, technical parameters, production processes, machining methods, application scenarios, selection tips and installation standards, helping global buyers quickly find the ideal polyethylene sheet for their working conditions.

1. Basic Introduction & Core Advantages of PE Sheets

1.1 What is Polyethylene Sheet?
Polyethylene sheet is a thermoplastic plate polymerized from ethylene monomers. It features stable physical and chemical properties, no toxicity and no peculiar smell. Due to its balanced performance and low cost, it ranks among the most versatile industrial plastic sheets worldwide.

1.2 Key Benefits of PE Plastic Sheets
 Ultra Low Temperature Resistance: Maintains excellent toughness at -70℃ to -100℃
- Super Chemical Corrosion Resistance: Resists most acids, alkalis, salts and organic solvents
- Wear Resistance & Self-Lubrication: Low friction coefficient and outstanding anti-abrasion performance
- Light Weight & High Strength: Low density of 0.91~0.97g/cm³, much lighter than metal materials
- Excellent Electrical Insulation: Stable insulating performance for electrical and electronic applications
- Low Water Absorption: Prevents deformation and performance degradation in humid environments
- Food-Grade Safety: Pure PE material complies with food contact safety standards

2. PE Sheet Types:
HDPE vs UHMWPE vs LDPE (Full Comparison)
Polyethylene sheets are mainly divided into three mainstream types for industrial use, with distinct performance and application differences.

2.1 HDPE Sheet (High Density Polyethylene Sheet)
Density: 0.94~0.97g/cm³Main Features: High rigidity, high tensile strength, excellent stress crack resistance, semi-transparent or opaque appearance, stable structural performance

Typical Applications: Chemical tank lining, water tank panels, anti-corrosion base plates, industrial structural parts, environmental protection equipment accessories

2.2 UHMWPE Sheet (Ultra-High Molecular Weight Polyethylene Sheet)
– Premium Grade Molecular
Weight: 1,000,000 ~ 5,000,000
Core Superior Performance:
- Superior wear resistance: 6~8 times wear-resistant than carbon steel, 4~5 times than nylon sheets
- Extreme impact resistance: No notch sensitivity, no brittle fracture even at ultra-low temperature
- Excellent self-lubrication: Low friction coefficient (0.05~0.11), anti-sticking for bulk materials
- Wide temperature adaptability: Stable from -196℃ to 80℃ (short-term maximum temperature ≤100℃)

Typical Applications: Coal bunker liner, material hopper lining, linear guide rails, sliding blocks, marine fender pads, heavy-duty wear-resistant parts

2.3 LDPE / LLDPE Sheet (Low / Linear Low Density Polyethylene Sheet)
Main Features: Soft texture, superior toughness, good light transmittance and flexibility

Typical Applications: Soft gaskets, industrial packaging materials, light-duty sealing parts, flexible base plates

3. Professional Performance Parameters of PE Sheets

3.1 Physical Properties Density, tensile strength, impact strength, surface hardness, linear expansion coefficient (10~13×10⁻⁵/℃)

3.2 Thermal Properties Melting point: about 130℃Long-term continuous working temperature: ≤80℃

3.3 Chemical Properties - Excellent resistance to common acid, alkali and salt solutions- Not resistant to strong oxidizing acids (concentrated nitric acid, concentrated sulfuric acid)- Incompatible with aromatic hydrocarbons and halogenated hydrocarbon solvents

3.4 Environmental & Safety Performance
Non-toxic, odorless, eco-friendly, fully compliant with international food contact and industrial environmental standards