Overview

An electroformed mesh etching supplier delivers precision screens grown as a nickel or copper foil on a patterned mandrel and finished by photochemical etching, rather than woven from wire. The electroforming step gives foils as thin as 0.02 mm with very uniform grain, and the etch step sets hole size, pitch and open area from the artwork. Because the apertures are formed chemically, the mesh is flat, burr-free and capable of 0.02 mm holes at fine pitch. The real differentiator between suppliers is capacity: the number of plating tanks, mandrel size and etch lines determine how many square metres can be shipped per month.

For a buyer, an electroformed mesh etching supplier is chosen on verified capacity as much as on feature size. Ask for the active mandrel area, the number of forming tanks, the daily sheet throughput and the maximum continuous run length, because a lab that makes a perfect sample may not hold a monthly contract. A qualified supplier runs multiple tanks in parallel, keeps spare mandrels for each part number and logs bath chemistry so long runs stay consistent. Prototypes come off the same plating line as volume, so a sample that passes an open-area check transfers to production without re-qualifying the foil.

Parameter Window

• Available Materials: electroformed nickel 200, nickel-iron, copper, nickel-cobalt alloy, stainless support rings
• Material Thickness Range: 0.02-0.30 mm electroformed foil; mandrel panels up to 500 × 500 mm
• Tolerance: ±0.005 mm on aperture diameter, ±0.01 mm on pitch, ±2% on open area
• Minimum Feature: 0.02 mm aperture at 0.04 mm pitch on 0.02 mm foil; web down to 0.02 mm
• Surface Options: electropolished, passivated, gold or nickel plated, framed, bonded to a support mesh
• Compliance: ISO 9001 process control, RoHS/REACH material traceability

Manufacturing Process / Workflow (8 Steps)

1. Capacity Audit — Confirm active mandrel area, tank count, daily throughput and maximum run length for the contract.
2. Mandrel Preparation — Pattern the mandrel with the resist image and verify defect count before it enters the plating tank.
3. Electroforming — Grow the nickel or copper foil to target thickness under controlled current density and bath chemistry.
4. Foil Release & Lamination — Release the foil from the mandrel, clean it and laminate resist for the aperture etch step.
5. Exposure & Development — Expose the hole pattern on both sides and develop, inspecting for blocked micro-apertures.
6. Etching — Etch from both faces with tight dwell control so the fine apertures open without widening the web.
7. Stripping & Finishing — Strip resist, electropolish, plate if specified, and bond the mesh to a frame or support ring.
8. Inspection & Packaging — Scan open area and aperture size, log the tank and bath record, then pack flat in clean trays.

Core Advantages

1. Verified capacity: Multiple forming tanks and etch lines give a documented square-metre-per-month output.
2. Ultra-fine apertures: 0.02 mm holes at 0.04 mm pitch are routine because the foil is grown, not rolled.
3. Uniform foil: Electroformed grain and thickness are even, so open area holds across a full panel.
4. Flat and burr-free: No weave crossover means the screen stays flat and seals evenly in a housing.
5. Long-run consistency: Bath chemistry and current density are logged, so a month-long run matches the first sheet.
6. Prototype-to-volume parity: Samples and volume share one mandrel and one line, so approval carries over unchanged.

Typical Applications

• Precision filtration: Micron-rated screens for fuel, hydraulic and pharmaceutical filtration.
• EMI and RF shielding: Fine copper or nickel vents that balance airflow with high attenuation.
• Optical and aperture arrays: Pinholes, grids and coded apertures for imaging and sensor systems.
• Battery and fuel cell: Current-collector and gas-diffusion meshes with high open area.
• Printing and stencils: Fine aperture masks for paste, ink and coating deposition.
• Aerospace and sieving: Lightweight classification meshes and particle-separation screens.

Design Notes & Process Considerations

1. Capacity evidence: For an electroformed mesh etching supplier, request tank count, mandrel area and monthly square-metre output in writing.
2. Mandrel ownership: Clarify who owns the mandrel and how spares are stored, since a damaged mandrel stops the whole run.
3. Aperture-to-thickness: Keep aperture diameter near foil thickness; much smaller holes close during etching.
4. Open-area target: State open area explicitly, because fine pitch changes flow more than hole diameter alone.
5. Bath traceability: Require bath chemistry and current-density logs tied to each delivered lot.
6. Spare capacity: Agree buffer capacity and a second qualified line for long-term or safety-critical contracts.