Grid Support Membrane, 90-150 µm (CAT#: STEM-BC-2850-ZJF)

This grid support membrane is designed as a structural substrate for composite flat-sheet and spiral-wound separation membranes. It is produced from high-strength polymer using controlled woven or nonwoven manufacturing methods. The regular porous structure supports a thin active separation layer without becoming the primary separation barrier. High tensile strength helps the composite membrane withstand coating, winding, operation, and cleaning stresses. A high open-pore fraction reduces resistance to water or gas transport through the finished membrane. The flat surface provides a stable base for depositing thin selective layers such as polyamide. Polyester and polypropylene options allow the support to be matched to mechanical, chemical, and cost requirements. The material can withstand compatible acidic, alkaline, and membrane-cleaning environments. It is intended for manufacturing reverse-osmosis, nanofiltration, gas-separation, and pervaporation membrane products.

Material options: PET and PP
Thickness: 90 to 150 µm
Basis weight: 70 to 120 g/m²
Porosity: ≥60%
Average pore size: 0.1 to 0.5 µm
Longitudinal tensile strength: ≥300 N/cm
Transverse tensile strength: ≥250 N/cm
Available roll widths: 1040, 1280, and 1580 mm or other specified widths
Structure: Regular grid-like porous support
Primary function: Mechanical reinforcement and flow support for composite membranes

High tensile strength
Stable dimensional structure
High open-pore fraction
Low flow resistance
Smooth coating surface
PET and PP material options
Strong active-layer adhesion support
Suitable for spiral-wound membrane production

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