Injection molded screening apparatuses and methods
AssigneeDerrick Corporation
InventorKeith Wojciechowski
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Abstract
Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material.
Claims30
A method of manufacturing a screen assembly, the method comprising:
- injection molding a plurality of independently formed thermoplastic screen elements each including openings having sizes in a range from approximately 40 microns to 150 microns;
- forming a support structure having support structure openings;
- securing the screen elements over a plurality of support structure openings to thereby form a screening surface.
A method of manufacturing a screen assembly, the method comprising:
- injection molding a plurality of independently formed thermoplastic screen elements, each screen element including openings having sizes in a range from approximately 40 microns to 150 microns;
- forming a support structure;
- securing the screen elements to the support structure to thereby form a screening surface.
A method of manufacturing a screen assembly, the method comprising:
- injection molding a thermoplastic screen element having screening openings that are elongated slots having substantially uniform width W and substantially uniform length L, and surface elements separating the screening openings, the surface elements having a thickness T that is approximately 70 μm≤T≤400 μm.
Dependencies are inferred from the claim text.