Overview

A custom insect screen is a thin metal membrane perforated with a dense, uniform array of apertures small enough to block insects while still passing air and light. Unlike woven wire cloth, where filaments can shift and openings vary, a photochemically etched screen is machined from a single flat sheet: a photoresist mask defines every aperture, and a controlled etchant dissolves the unprotected metal to leave a rigid, burr-free mesh with precise open area. For very fine meshes below the practical etching limit, precision electroforming builds the nickel screen on a mandrel and releases it as a stress-free foil.

Because the pattern is imaged rather than punched, hole diameter, pitch, web width and outline are all set by the artwork, so the same film reproduces identically from the first sample to high volume. Typical stock is 304/316L stainless steel, copper or nickel between 0.05 mm and 0.5 mm, with apertures from 0.2 mm to 1.0 mm and open area tuned to the airflow target. As a custom insect screen it is used in window and door vents, HVAC grilles, appliance and electronics ventilation, food-processing guards and laboratory enclosures. As an OEM-oriented product we supply cut-to-shape panels, coils or framed assemblies, with rapid prototypes before volume runs.

Parameter Window

• Available Materials: 304/316L stainless steel, copper, nickel, nickel-plated steel
• Material Thickness Range: 0.05–0.5 mm (electroformed nickel down to 0.02 mm)
• Tolerance: ±0.02 mm on hole diameter and outline, ±0.03 mm on pitch
• Minimum Feature: 0.15 mm aperture, 0.10 mm web width at 0.1 mm stock
• Surface Options: passivation, electropolish, black oxide, powder coating, adhesive or frame bonding
• Compliance: ISO 9001 process control, RoHS/REACH material traceability

Manufacturing Process / Workflow (8 Steps)

1. Artwork & DFM Review — Convert the vent layout into vector artwork and check aperture, web and margin against the chosen 0.05–0.5 mm stock.
2. Material Selection — Choose 304/316L, copper or nickel in the right temper and confirm flatness before lamination.
3. Cleaning & Lamination — Degrease the sheet and laminate dry-film photoresist on both faces under controlled heat and pressure.
4. UV Exposure — Expose the aperture array through high-resolution film registered to the sheet datum for panel-level accuracy.
5. Development — Wash out unexposed resist to open every aperture, then inspect the finest holes for residue.
6. Controlled Etching — Spray etchant matched to the alloy, holding ±0.02 mm through time, temperature and conveyor speed.
7. Stripping & Finishing — Remove resist, neutralize, then passivate, blacken or bond the screen to a frame or adhesive.
8. Inspection & Packaging — Verify open area, hole size and flatness against the approved first article, then pack flat or in rolls.

Core Advantages

1. Burr-free openings: Chemical removal leaves smooth hole walls with no snagged wires, so airflow stays even and hands are not cut during fitting.
2. Uniform open area: Every aperture is imaged from one film, giving consistent insect exclusion and predictable pressure drop across the panel.
3. No hard tooling: A new mesh pattern is only a new film, so custom insect screen prototypes and small batches stay economical.
4. Flat and rigid: A single-piece etched screen will not fray or unravel at cut edges, and it holds shape in a frame without tensioning.
5. Design freedom: Hole shape, pitch, logo cut-outs and outline are all editable in the artwork without a die change.
6. Supply flexibility: Panels, strips, coils and framed assemblies can all be produced on one line for OEM programs.

Typical Applications

• Window and door vents: Cut-to-size insect barriers that press-fit into aluminium or uPVC profiles.
• HVAC grilles: Rigid mesh inserts that keep insects out of ducting while resisting corrosion.
• Electronics ventilation: Fine screens over fan inlets and speaker ports on outdoor enclosures.
• Appliance guards: Vent covers for dryers, range hoods and small consumer appliances.
• Food and lab equipment: Washable stainless screens for processing cabinets and clean-air hoods.
• Agricultural screening: Vent panels for greenhouses and livestock housing where airflow matters.

Design Notes & Process Considerations

1. Web-to-thickness ratio: Keep the minimum web at or above the material thickness so narrow ribs do not lift or break during etching.
2. Aperture sizing: Set hole diameter from the target insect size, then balance pitch against the required open area and airflow.
3. Outline and margin: Leave a solid, unperforated border for framing or bonding, and specify corner radii to avoid tearing.
4. Flatness: Call out flatness per 100 mm so large panels sit flush in the frame without bowing.
5. Finish and corrosion: Name the coating and thickness, since plating or powdercoat adds to the final stack and narrows the holes.
6. Panelization: Group several screen sizes on one sheet with shared registration marks to cut handling cost on repeat custom insect screen orders.