Extruded 20-200mm HDPE Sheet for Machine Components
2 week ago
Product details
Extruded 20-200mm HDPE Sheets for Machine Components
Why is “high density” better?
- High crystallinity: The molecular chains are stacked in an orderly manner, resulting in a compact structure and higher rigidity, hardness, and temperature resistance.
- High density: The interstitial spaces between the molecular chains are small, resulting in more polymer per unit volume and higher strength.
- Excellent chemical inertness: The molecular chains are non-polar and virtually unreactive with acids, bases, and salts.
- Good processing fluidity (moderate): Suitable for thermoplastic processing such as extrusion, injection molding, blow molding, and calendering.
- Low water absorption: Virtually no water absorption, resulting in excellent dimensional stability.
- Strong environmental stress cracking (ESCR) resistance: Insensitive to surface scratches and stress concentration, resulting in excellent durability.
Advantages of HDPE Sheet
- High corrosion resistance, resistant to almost all common chemicals
- Moderate mechanical strength, impact and drop resistance
- Lightweight, easy to handle, and easy to process
- Non-toxic, odorless, safe, and hygienic (food grade)
- Excellent low-temperature resistance, non-brittle
- Low cost, extremely cost-effective
- Excellent electrical insulation
- Highly processable (cutting, welding, thermoforming, printing, etc.)
Application Areas
Chemical and Environmental Protection
Chemical Equipment Components: Chemically resistant HDPE sheet is used for acid tank linings (such as sulfuric acid and hydrochloric acid tanks) and reactor agitator supports (such as in chlor-alkali chemical equipment). It withstands strong acids and alkalis (pH 1-14) without releasing harmful substances, and has a service life of over 10 years.
Environmental Equipment Structural Components: Used in pipe supports in sewage treatment plants (such as MBR membrane module supports) and ventilation duct connectors (such as in industrial dust removal systems). It is corrosion-resistant and easy to clean (with a smooth surface and no dead corners), replacing stainless steel to reduce maintenance costs.
Food and Pharmaceutical
Food Processing Machinery Components: HDPE sheet, compliant with FDA and GB 4806.6 standards, is used for food agitators (such as in beverage production equipment) and baking molds (such as cake pans). It is non-toxic, odorless, and resistant to high-temperature steam sterilization (121°C for 30 minutes without deformation), suitable for direct food contact.
Medical Device Housings: Medical-grade HDPE sheets (compliant with ISO 10993 biocompatibility standards) are used for syringe plunger covers and infusion pump panels. Their smooth surface makes them easy to sterilize (resistant to ethylene oxide and gamma ray sterilization).
Architecture and Decoration
Architectural Lighting and Partitions: White translucent HDPE sheets (with the addition of a small amount of light diffuser) are used for interior partitions (such as offices and shopping mall display cases) and greenhouse coverings (such as agricultural greenhouses). Their light transmittance is approximately 50%-70% (common PC has a transmittance of over 90%, but HDPE is lighter and more impact-resistant).
Outdoor Decorative Components: HDPE sheets with UV absorbers are used for park benches (such as municipal public facilities) and landscape sculpture supports (such as city square decorations). They offer superior weather resistance to ordinary plastics (no noticeable fading or cracking after five years of outdoor exposure).
Machinery and Industry
Mechanical Guides and Bearings: Self-lubricating HDPE sheets are used in conveyor guides (e.g., in food packaging lines) and machine tool slides (e.g., auxiliary components for CNC machine tools). Their low coefficient of friction (0.2-0.3) reduces wear and noise (over 50% quieter than metal guides).
Industrial Container Seals: Wear-resistant HDPE sheets are used in chemical pump seals (e.g., centrifugal pumps) and valve bushings (e.g., ball valves). They are creep-resistant and chemically resistant (suitable for conveying highly corrosive fluids).
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