HDPE Liner for Industrial Infrastructure

Project overview

Project Name: JSW EV Plant

Location: Chhatrapati Sambhaji Nagar, Maharashtra

Product Used: Ocean HDPE Liner 300 Micron

Quantity: 11,152 Kg

Ocean Non Wovens supplied 11,152 kg of Ocean HDPE Liner 300 Micron (0.3 mm) for the JSW electric-vehicle plant at Chhatrapati Sambhaji Nagar. The liner forms an impermeable geomembrane barrier between plant operations and the underlying soil, to stop leaks, keep moisture out of the subgrade and protect the ground over the life of the facility.

Why an EV plant needs a liner

EV manufacturing involves process chemicals, lubricants, wastewater streams and heat from machinery. Any of these can reach untreated soil and, from there, groundwater, and moisture rising into the subgrade can weaken floors and foundations. An HDPE geomembrane is used here for its low permeability, chemical resistance and strength. In industrial sites it typically works as:

• Effluent containment: keeping industrial wastewater out of the surrounding soil
• Subgrade isolation: protecting foundation layers from moisture and chemical infiltration
• Drainage channel lining: carrying liquids without seepage losses
• Chemical storage zones: a barrier beneath areas where aggressive substances are handled

Impermeable liners are also a regulatory expectation in India: the Central Pollution Control Board’s guidelines for hazardous waste storage and disposal call for lined facilities to protect soil and groundwater.

A 300 micron sheet is a light grade. It suits moisture and vapour barriers and secondary protection layers; primary containment of hazardous liquids is normally designed with thicker liners (1.5 mm is common) to GRI-GM13 properties. On industrial sites the liner often works alongside other geosynthetics: geotextiles and geogrids under heavy-load pavements, and geocomposites for drainage beneath structures.

Site challenges at the JSW EV plant

1. Chemical exposure

EV manufacturing processes involve electrolytes and other chemical compounds, industrial lubricants and oils, and process wastewater. These can penetrate untreated soil and leave long-term contamination.

2. Heavy loads

Heavy machinery moves through the facility, equipment imposes static loads, and operations apply repeated stress. Without proper design, these loads deform the subgrade and strain the liner.

3. Temperature variation

Heat from machinery and daily temperature cycles make HDPE expand and contract. HDPE has a high coefficient of thermal expansion, so sheets laid taut on a hot afternoon can pull tight at seams and corners when they cool. Installation has to allow for this slack.

Installation and quality control

A geomembrane is only as good as its installation. A single pinhole or weak seam can let liquid through, so each stage is checked.

Subgrade preparation

• Remove sharp aggregate and debris
• Compact for uniform support
• Grade to the design falls for drainage

Liner deployment

• Unroll under control to keep wrinkles to a minimum
• Align panels with the drainage and containment layout
• Leave allowance for thermal expansion and contraction

Seaming and testing

• Hot-wedge welding for long panel seams, extrusion welding for patches and details
• Non-destructive testing, such as air-pressure testing of double-wedge seams
• Visual inspection of every weld

Protection

• Cushioning geotextile where the subgrade or cover material is angular
• Keep traffic and tools off the exposed liner during construction
• Sequence overlying works so the liner is covered promptly

Long-term performance

• Low permeability: stops seepage of process liquids into the ground
• Chemical resistance: withstands a wide range of acids, alkalis and hydrocarbons
• Mechanical strength: resists puncture and tensile stress when the subgrade is properly prepared
• Thermal stability: keeps its properties through normal service temperature changes

HDPE lasts far longer buried than exposed: UV light and heat drive its ageing, so covering the liner promptly is the simplest way to extend its life. A sound liner also lowers operating risk over the plant’s life: it prevents soil and groundwater contamination, limits moisture damage to floors and foundations, avoids remediation costs and supports compliance with environmental rules.

About Ocean Non Wovens

Ocean Non Wovens manufactures and supplies HDPE geomembranes and other geosynthetics for industrial containment and protection, from EV manufacturing plants to large infrastructure projects. See more case studies or talk to our team about liner grades for your site.