Collection: Meshes & Filters
Precision Filtration: The Superiority of Photo Etched Meshes and Filters
In industrial applications ranging from medical diagnostics to aerospace fuel systems, the requirement for precise particle separation is absolute. While woven wire mesh and perforated sheets have long been the standard, they often suffer from structural instability and inconsistent aperture sizes.
Chemical photo etching has redefined the standards for filtration technology, offering a level of precision, durability, and customization that traditional manufacturing simply cannot replicate.
What Makes Photo Etched Mesh Different?
Unlike woven mesh—which is made by interlacing wires—or stamped mesh, which is punched out mechanically, photo etched mesh is created through a controlled chemical removal process. This results in a single-unit structure where the "wires" are actually part of a continuous sheet of metal.
Common applications for photo etched filters include:
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Medical Grade Filters: Micro-fluidic filters and stents.
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Acoustic Meshes: Precision grilles for high-end microphones and speakers.
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Fuel and Hydraulic Filters: High-pressure filtration for aerospace and automotive sectors.
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Optical Grids: Specialized meshes for light attenuation and EMI shielding.
The Technical Advantages of Etched Filtration Solutions
When selecting a mesh for critical industrial processes, engineers choose photo etching for several key reasons:
1. Invariable Aperture Precision
In woven mesh, wires can shift over time, altering the size of the openings and compromising filtration integrity. Photo etching produces apertures with micron-level accuracy that are fixed in place. Whether you require square, round, or complex hexagonal holes, the geometry remains consistent across the entire surface.
2. Bur-Free and Stress-Free Edges
Mechanical punching or laser cutting can leave behind heat-affected zones or jagged burrs. In a filtration system, these burrs can break off and contaminate the fluid stream. Photo etching is a cold chemical process, ensuring smooth, burr-free holes that facilitate laminar flow and prevent particle entrapment.
3. Variable Hole Density and Geometry
Traditional perforation is limited by the physical size of the punch. With photo etching, we can create holes that are smaller than the material thickness. Furthermore, we can design tapered apertures (conical holes) that help prevent "blinding" or clogging, allowing for easier back-washing and a longer filter lifespan.
4. Structural Integrity and Robustness
Because the mesh is etched from a single piece of metal, there are no joints, welds, or intersections to fray or break. This makes photo etched filters incredibly robust, capable of withstanding high-pressure differentials and vibration without losing their shape.
Material Excellence for Harsh Environments
Filtration often takes place in corrosive or high-temperature environments. We specialize in etching high-performance materials to meet these challenges:
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Stainless Steel (304, 316L): The versatile choice for food, beverage, and medical applications.
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Titanium: Ideal for lightweight, high-strength filtration in seawater or acidic environments.
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Nickel Alloys: For extreme temperature resistance in chemical processing.
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Molybdenum: Used in specialized high-vacuum and electronic applications.
Custom Filtration Solutions with BlazeAsia
At BlazeAsia, we don't just provide "off-the-shelf" mesh. We partner with your engineering team to develop custom filtration patterns tailored to your specific flow rates and particle retention requirements.
Our digital tooling process allows for rapid prototyping, enabling you to test different aperture designs and open-area percentages without the lead times associated with custom-woven or stamped products. From micro-mesh for sensors to heavy-duty industrial strainers, we deliver the precision your application demands.
Chemical Etching vs. Conventional Processes
Discover why engineers choose photo chemical etching over CNC machining, laser
cutting, and stamping for intricate metal parts.
| Feature | BLAZE Chemical Etching | CNC Machining | Laser Cutting | Stamping |
|---|---|---|---|---|
| Precision | Ultra-fine features with no burrs | Limited by tool size | High, but heat affects edges | Dependent on tooling |
| Tooling Costs | Low (Digital "Soft" Tooling) | Expensive | None | High hard tooling costs |
| Mechanical Stress | No stress, no part deformation | Cutting force may cause stress | Heat can alter properties | High-impact process |
| Design Flexibility | Easy design changes (no hard tooling) | Requires reprogramming | Flexible | Hard to modify |
| Speed | Fast for prototypes & production | Slower for intricate designs | Fast for cutting | Tooling setup time required |
| Material Compatibility | Ideal for thin, brittle & delicate metals | Limited to machinable metals | Some materials burn/melt | Not best for thick metals |
Advanced Design Inclusions
BLAZE offers advanced profile controls and custom design integrations that go beyond standard through-etching.
Half-Etching
Ideal for fold lines (simplifying hand-forming), integrating logos, barcodes, text, and intricate surface patterns without piercing the material entirely.
Component Tagging
Keep parts retained in the sheet for surface coating or plating operations using custom tags (protruding or recessed half-metal thickness tags), or receive them supplied loose.
Micro Features
Standard minimum feature size down to 0.075mm (or 100% of material thickness, whichever is greater). Enables extraordinary complexity.
Material Tolerance & Specifications
Compatibility and Precision Standards
- • Materials 0.010mm – 0.250mm thick: ±0.025mm standard tolerance.
- • Materials above 0.250mm thick: ±10% of metal thickness.
| Metal Thickness (T) | Hole/Slot Size | Bar Size | Internal Radius | External Radius | Profile Tolerance | Etch Profile Cusp |
|---|---|---|---|---|---|---|
| 0.050mm | 0.100mm | 0.100mm | 0.050mm | 0.040mm | ±0.025mm | 10-20% x T |
| 0.100mm | 0.110mm | 0.110mm | 0.100mm | 0.080mm | ±0.025mm | 10-20% x T |
| 0.150mm | 0.170mm | 0.170mm | 0.150mm | 0.120mm | ±0.025mm | 10-20% x T |
| 0.200mm | 0.220mm | 0.220mm | 0.200mm | 0.160mm | ±0.025mm | 10-20% x T |
| 0.250mm | 0.275mm | 0.275mm | 0.250mm | 0.200mm | ±0.030mm | 10-20% x T |
| 0.500mm | 0.550mm | 0.550mm | 0.500mm | 0.400mm | ±0.055mm | 10-20% x T |
| 0.700mm | 0.770mm | 0.770mm | 0.700mm | 0.560mm | ±0.077mm | 10-20% x T |
| 1.000mm | 1.100mm | 1.100mm | 1.000mm | 0.800mm | ±0.110mm | 10-20% x T |
| 1.500mm | 1.650mm | 1.650mm | 1.500mm | 1.200mm | ±0.165mm | 10-20% x T |
| 2.000mm | 2.200mm | 2.200mm | 2.000mm | 1.600mm | ±0.220mm | 10-20% x T |
With photo etching, the smallest inside and outside corner radius achievable is directly proportional to the thickness of the selected metal being processed.
- • Outside corner radius: Minimum of 75% material thickness.
- • Inside corner radius: Minimum of 100% material thickness.
Suitable Materials & Sheet Sizes
| Metal Family | Thickness Range | Max Sheet Size |
|---|---|---|
| Steel & Stainless Steels | 0.005mm - 1.500mm | 600mm x 1500mm |
| Nickel & Nickel Alloys | 0.010mm - 1.500mm | 600mm x 1500mm |
| Copper & Copper Alloys | 0.010mm - 2.000mm | 600mm x 1500mm |
| Aluminium Alloys | 0.025mm - 2.500mm | 600mm x 1500mm |
| Titanium & Titanium Alloys | 0.010mm - 1.000mm | 300mm x 500mm |
Exotic Metals & Custom Supply
Beyond our standard metal families, BLAZE is fully equipped to etch special and exotic metals upon request. We are also happy to work with customer-supplied material to meet your exact project specifications.