Overview

A mesh etching manufacturer runs the whole photochemical chain on one site: resist lamination, film exposure, development, etching, stripping, annealing and optical inspection. That matters because etched mesh is a geometry problem before it is a purchasing problem. Aperture size, web width, open area and edge taper all come out of the same few variables — resist adhesion, exposure dose, etchant strength, spray pressure and dwell time — and a supplier that owns every step can hold those variables instead of relaying tolerances back to a third party.

Buying direct from a mesh etching manufacturer also changes the commercial picture. There is no trading layer adding margin between the plant and the purchase order, engineering questions reach the people who run the bath, and a design that cannot be etched is flagged at quotation rather than after the first lot. Coil widths up to 400 mm, stock from 0.03 mm to 1.0 mm and open areas up to 70% are handled on the same lines, so a filter screen, an EMI mesh and a decorative panel can share one production schedule.

Parameter Window

• Available Materials: stainless steel 304/316L, copper, nickel, aluminum 5052, titanium
• Material Thickness Range: 0.03–1.0 mm
• Tolerance: ±0.05 mm on outline, ±0.01 mm on aperture and web width
• Minimum Feature: 0.1 mm aperture with 0.08 mm web on 0.05 mm stock; open area up to 70%
• Surface Options: passivation, ultrasonic degrease, anneal, black oxide, electrophoretic coat, adhesive backing
• Compliance: ISO 9001 process control, RoHS/REACH material traceability

Manufacturing Process / Workflow (8 Steps)

1. Incoming Material Check — Verify alloy, temper, thickness and mill certificate against the purchase specification before the coil enters the line.
2. DFM and Film Generation — Review the drawing for minimum web, aperture-to-thickness ratio and open area, then plot the exposure film at production scale.
3. Cleaning & Lamination — Degrease and laminate dry film resist on one or both faces, with adhesion checked on a coupon from the same coil.
4. Exposure — Register the artwork to the coil edge and expose at a dose that holds 0.1 mm apertures without undercut at the wall.
5. Development — Wash out unexposed resist and inspect the aperture field for residual film, pinholes and edge quality.
6. Etching — Run the strip through a spray etcher with chemistry matched to the alloy; speed, temperature and pressure are logged per lot.
7. Stripping & Annealing — Remove resist, neutralize, rinse and anneal where the mesh must be dead flat for downstream lamination.
8. Inspection & Dispatch — Measure aperture, web, open area and flatness on a sampling plan, then interleave and pack with lot traceability.

Core Advantages

1. One site, one tolerance chain: Lamination, exposure, etching and inspection sit in the same building, so a drift in aperture size is corrected at the source instead of negotiated between suppliers.
2. Engineering review at quotation: Drawings are checked for etchability before pricing, and marginal webs or aspect ratios are flagged with a workable alternative.
3. No trading markup: Orders are priced from the production floor, so repeat volumes and annual contracts are quoted without an intermediary layer.
4. Capacity for mixed orders: Coil stock in several alloys is held on site, letting a single schedule cover filter mesh, shielding mesh and decorative panels.
5. Lot-level traceability: Every reel carries alloy, coil number, etch parameters and inspection results, which supports RoHS/REACH declarations and incoming audits.
6. Tooling-free variants: A new aperture pattern is a new film, so model changes and small trial batches do not wait for a die to be cut.

Typical Applications

• Filtration mesh: Uniform aperture screens for fuel, hydraulic and air filters where open area must stay within a narrow band.
• EMI and RF shielding: Fine copper or nickel mesh laminated over apertures on enclosures and modules.
• Acoustic mesh: Speaker and microphone screens with controlled airflow resistance and burr-free edges.
• Battery and fuel-cell mesh: Current collector grids and gas diffusion screens in stainless and nickel.
• Decorative perforated panels: Architectural and appliance facials with a repeating aperture pattern on 0.5–1.0 mm stock.
• Medical and lab screens: Sieving and support mesh in 316L, passivated and ultrasonically cleaned for cleanroom use.

Design Notes & Process Considerations

1. Aspect ratio limit: Keep aperture depth at no more than 1.5 times the aperture width, or the etch will taper and open area will fall short of the drawing.
2. Web width minimum: Specify at least 0.08 mm web on 0.05 mm stock; thinner webs survive etching but distort in handling and lamination.
3. Open area calculation: State whether open area is measured on the theoretical pattern or on the finished part, since edge taper removes 3–8% in practice.
4. Edge margin: Leave a 1.5–2 mm solid border for reel handling and for clamping during stretching or framing.
5. Flatness after anneal: Ask for flatness per 100 mm when the mesh is bonded to a carrier; unannealed nickel mesh can cup after stripping.
6. Documentation package: Request mill certificates, etch parameter records and dimensional reports with each lot if the part feeds a regulated assembly.