The Future of Soil Stabilization
Quality Control
Geocells are three-dimensional, expandable panels made from high-density polyethylene (HDPE) that create a powerful cellular confinement system for modern civil engineering.
GEOMEMBRANE CALENDERING PRODUCTION LINE FLOWCHART
GEOMEMBRANE BLOWN FILM PRODUCTION LINE FLOWCHART
Generation process
1
Raw material preparation and feeding
First, polyethylene resin granules (HDPE, LDPE or LLDPE) are mixed with carbon black masterbatch, anti-aging agent, ultraviolet stabilizer and other ingredients in a certain proportion.
2
Melt extrusion
The mixed raw materials enter the extruder. Heating: The screw rotates inside the barrel, and the plastic is completely melted through shear heat and external heating coils. Filtration: The melt is filtered to remove impurities, ensuring the uniformity of the membrane surface and preventing pinholes.
3
Die head discharge and blowing
Molten plastic is forced under pressure into a circular die, forming a tubular film. Bubble Forming: Compressed air is introduced through the center of the die, inflating the tubular film into a large bubble. Stretch Ratio: The diameter of the bubble (i.e., lateral stretching) can be controlled by adjusting the airflow; simultaneously, longitudinal stretching is controlled by the traction speed.
4
Cooling and shaping
As the membrane bubble moves upward, it is cooled by cold air ejected from the external cooling ring. Frost Line: The boundary where the plastic transitions from a molten state to a solid state. After crossing the frost line, the membrane dimensions are essentially fixed.
5
Bubble stabilization and folding
The membrane bubble is gradually flattened by the collapsing frame, becoming a double-layered, flat film. Bubble stabilization: Ensures the film does not wobble during high-speed traction, keeping thickness deviation within a minimal range.
6
Winding and inspection
Finally, the film is wound onto a take-up shaft. Quality Monitoring: An online thickness monitoring system detects and feeds back to the extruder in real time, ensuring uniform film thickness throughout the roll.
Defective products
prohibited from leaving the factory
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