Wholesale LDPE 5 Suppliers & Supplier Network

LDPE Grade 5 features a higher degree of short- and long-chain branching, lowering overall polymer density to approximately 0.915 – 0.925 g/cm³. This provides extraordinary elongation at break (>700%) and superior flexibility without yielding. In contrast, HDPE exhibits higher tensile strength and chemical stiffness but is more susceptible to environmental stress cracking under uneven differential settlement. LDPE 5 is preferred for dynamic subsoils, municipal canals, and irregular tunnel lining.

Every production batch undergoes automated thickness gauging across the entire 8-meter bubble width. We execute internal melt flow rate verification (ASTM D1238), multi-axial tensile tests (ASTM D6693), and carbon black dispersion analysis (ASTM D5596). Third-party test certifications (such as TRI, SGS, or Intertek) can be aligned prior to container seal release.

Yes. Our plant operates co-extrusion blown-film lines capable of producing 2-layer and 3-layer films with dual-tone pigmenting (e.g., black on green or black on blue). Custom roll widths ranging from 2.0 meters up to 8.0 meters and roll lengths matched directly to site anchor-trench cut sheets can be scheduled to minimize transverse on-site welds.

Flexible LDPE 5 is easily seamed using dual-track hot wedge welding systems equipped with air channels for pressure integrity testing. Due to its lower melt temperature compared to HDPE, hot wedge temperatures typically operate between 280°C and 340°C depending on ambient wind conditions. Detail work, boots, and pipe penetrations are sealed using hand-held extrusion welders fed with matching LDPE welding rod.

For standard 40-foot High Cube (40HC) ocean containers, roll loading capacity typically ranges between 18 to 22 metric tons, depending on membrane thickness and roll diameter. Core sizes of 3 inches or 6 inches heavy-duty cardboard or steel cores are used, protected by UV-resistant woven geotextile wrappers and slings to expedite offloading at port destinations.