INDUSTRY COMPONENT

Support Layer

Structural support layer in reverse osmosis membranes providing mechanical stability and flow channels.

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Component Specifications

Definition
The support layer is a porous structural component in composite reverse osmosis membranes, typically made from non-woven polyester or polysulfone materials. It provides mechanical strength to withstand operational pressures up to 1000 psi, creates flow channels for permeate collection, and supports the active polyamide layer while maintaining consistent porosity for optimal water flux.
Working Principle
Provides mechanical support through a porous structure that distributes hydraulic pressure evenly across the membrane surface while allowing permeate water to flow through to collection channels without creating backpressure or flow restrictions.
Materials
Non-woven polyester fabric (PET), polysulfone (PSf), or polyethersulfone (PES) with controlled porosity between 40-60%, thickness 100-200 μm, pore size 0.1-1.0 μm.
Technical Parameters
  • Porosity 45-55%
  • Thickness 120-180 μm
  • Burst Strength ≥ 500 kPa
  • Air Permeability 2-5 cm³/cm²/s
  • Tensile Strength ≥ 50 N/cm
  • Chemical Resistance pH 2-12, chlorine < 0.1 ppm
Standards
ISO 2941, ASTM D3786, DIN 53887

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Support Layer.

RO membrane support layer porous support structure non-woven polyester membrane backing filtration component water treatment industrial parts Support Layer Support Layer in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Reverse Osmosis Membrane

A semi-permeable membrane used in reverse osmosis systems to remove dissolved solids, ions, and contaminants from water by applying pressure to overcome osmotic pressure.

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Engineering Analysis

Risks & Mitigation
  • Delamination from active layer
  • Compaction under high pressure
  • Chemical degradation from oxidants
  • Biological fouling in pores
  • Uneven flow distribution
FMEA Triads
Trigger: Inadequate material selection
Failure: Support layer compaction under pressure
Mitigation: Use polysulfone materials with higher glass transition temperature and implement pressure cycling protocols
Trigger: Poor bonding with active layer
Failure: Delamination during operation
Mitigation: Apply surface treatment (plasma or chemical activation) and optimize adhesive application parameters

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Thickness ±10 μm, Porosity ±3%, Dimensional stability < 1% change after 1000 hours at 45°C
Test Method
ASTM D3786 for burst strength, ISO 2941 for hydraulic pressure resistance, SEM analysis for pore structure verification

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the primary function of the support layer in RO membranes?

The support layer provides mechanical stability to withstand high operating pressures, creates flow channels for permeate collection, and supports the thin-film polyamide active layer without compromising filtration performance.

How does support layer porosity affect RO membrane performance?

Optimal porosity (45-55%) ensures efficient permeate flow with minimal pressure drop while maintaining structural integrity. Too high porosity reduces mechanical strength; too low porosity increases flow resistance and energy consumption.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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