Storage Tanks
Ideal for producing roto-molded water tanks, septic tanks, and chemical storage containers due to excellent impact strength and UV stability.
HD3840UA
HD3840UA – High-Performance Rotomolding Grade for Tanks & Industrial Parts
Product overview
HD3840UA
Product overview
HD3840UA is a polyethylene grade for rotational molding of large hollow parts such as tanks and industrial containers. Confirm impact performance, processing behaviour and outdoor durability against the actual application and current technical datasheet.
Introduction to HD3840UA
1
HD3840UA is a butene-based linear copolymer polyethylene designed for rotational molding applications, combining medium-to-high density with excellent flow characteristics.
2
This grade offers high impact resistance, superior environmental stress crack resistance (ESCR), and stable mechanical properties for demanding industrial and outdoor applications.
3
The UA stabilizer package includes antioxidants and UV light stabilizers (UV8), making it suitable for long-term outdoor exposure.
Applications
Containers & Industrial Bins
Suitable for drums, material handling bins, bulk containers, and transportation containers.
Recreational & Outdoor Products
Used to manufacture kayaks, portable cabins, playground slides, and outdoor recreational components.
Molded Parts
Applicable for certain injection-molded components, technical parts, and industrial caps requiring medium-density PE.
Features
- Designed specifically for rotational molding with excellent melting and flow behavior.
- High impact resistance suitable for large hollow structures and outdoor equipment.
- Strong Environmental Stress Crack Resistance (ESCR), ensuring long service life.
- UV-Stabilized (UA package) including antioxidants and light stabilizers – suitable for outdoor applications.
- Smooth surface finish and excellent opacity for both internal and external surfaces.
- Density: 0.935 – 0.939 g/cm³ (ASTM D1505)
- MFI: 3.8 – 4.5 g/10 min (190°C / 2.16 kg, ASTM D1238)
- Tensile Strength @ Yield: 15 – 18 MPa (ASTM D638)
- Elongation at Break: Minimum 900 – 1000% (ASTM D638)
- Flexural Modulus: 650 – 700 MPa (ASTM D790)
- Hardness (Shore D): 62 – 65 (ASTM D2240)
- Charpy Impact (Notched): Minimum 18 – 20 kJ/m² (ASTM D256)
- Vicat Softening Point: 115 – 120°C (ASTM D1525)
- Melting Point: 127 – 131°C (ASTM D2117)
- ESCR: 300 – 400 hr, Condition B/F50 (ASTM D1693)
- Co-monomer: Butene-1 (C4)
- Food Contact Approval: Meets FDA 21 CFR 177.1520 & EU Regulation 10/2011
Production Processes
Rotational Molding Process
3840UA powder is loaded into hollow molds, heated, and rotated around multiple axes allowing the polymer to melt, coat the mold walls uniformly, and form seamless hollow structures.
Cooling & Solidification
After uniform melting, the mold is cooled gradually to maintain dimensional stability, minimize shrinkage, and enhance impact resistance.
Demolding
Parts are carefully removed from the mold, resulting in smooth internal and external surfaces with excellent finish and strength.
Nexis Group
HD3840UA
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HD3840UA