No traps with PEF-made sieves
A technology that ensures 100% of fine particulate materials can be accounted for during sieving processes has been developed by Weymouth, UK-based ultra-fine metal mesh specialist, Tecan.
The company's sieves and meshes, made by Photo ElectroForming (PEF), do not usetraditional woven-wire construction and therefore ensure that no sieved materials are trapped during sieving, filtering or grading processes.
The company's mesh technology eradicates the restrictions associated with off-the-shelf meshes, such as 'square-only' apertures, as well as across-mesh rigidity problems and unwanted material retention.
The new meshes can be custom-produced with bespoke aperture shapes and sizes relevant to the particles being measured, filtered or graded with little or no cost premium and with aperture tolerances from +/-2µm.
Furthermore, mesh thickness can be selectively increased beyond 1:1 aspect ratios to meet exact strength and rigidity requirements. For example, solid portions such as lateral supports can easily be incorporated into the design. Mesh can also be supplied to specified shapes with significant reductions in customer-side processing.
The company says accurate custom mesh designs can be produced to satisfy virtually any filtering and sieving requirements using precision PEF. Easy cleaning and long operational life are also advantages of the PEF process.
