Geomembrane manufacture & HDPE Geomembrane Liners

Environmental Durability

HDPE geomembrane demonstrates exceptional environmental stress cracking resistance and UV stability.

 With proper formulation including carbon black content (2.0-3.0%) and UV stabilizers, the material can maintain its integrity for decades 

when exposed to harsh weather conditions and mechanical stresses.

Manufacturing Process and Quality Control

Production Methodology

The geomembrane manufacture process begins with the meticulous selection of virgin high-density polyethylene (HDPE) resin, 

which is rigorously inspected and tested for key parameters 

such as density, melt index,

 and carbon black content to ensure raw material quality and consistency 

. The resin is then fed into an extruder, where it is heated to a precise temperature range (typically between 200–260°C) until molten 

. This molten polymer is forced through a flat or circular die to form a continuous sheet of the desired thickness and width, 

with advanced manufacturing facilities often employing co-extrusion or blow-molding techniques to achieve uniform material distribution 

Throughout production, quality assurance protocols are strictly implemented. In addition to raw material checks, 

in-process monitoring is conducted to 

maintain consistent thickness and surface quality, 

while finished HDPE geomembrane liners undergo a series of performance tests 

. These tests typically include tensile strength, tear resistance, puncture resistance, 

and oxidation induction time (OIT) measurements,

often conforming to international standards 

such as ASTM or GB/T 17643-2011 

. Such comprehensive quality control ensures that each geomembrane sheet meets required mechanical 

and durability standards before being rolled, packaged, 

and shipped for use in applications ranging to environmental containment and water infrastructure 

In-process thickness monitoring using ASTM D5199 standards

Final product testing for tensile strength, tear resistance, and puncture resistance

Permeability testing to ensure impermeability

Each roll of HDPE geomembrane receives a quality certificate documenting all test results, 

with roll identification systems allowing for complete traceability from manufacturing to installation.

Applications of HDPE Geomembrane Liners