Polypropylene Cabinet for Spin-Coating

Spin- coating is a process used to apply very thin coats of material to flat substrates, for example, the photoresist coating on a silicone wafer. The treated wafer might then go on to become lots of silicone microprocessor chips. Our client needed a fire-retardant cabinet to house his four wafer spin-coating station.

Polypropylene Spin-coating Station CabinetThis picture shows the early stages of the process. The cabinet  is fabricated using 3/8″and 1/2″ white fire retardant polypropylene. Polypro is used because of its unusually strong resistance to chemical solvents and acids.

Eight exterior panels make up the cabinet. Many other components were used internally for this project. Each panel is programmed to allow theCNC router to machine the correct sizes and shapes. The CNC router also machines location slots to help with weld location.  Once the panels are machined and the measurements are verified, the panels are sent to the welding department.

The welder uses the location slots provided to prepare each panel for welding. The welder, using polypro welding rod, attaches the panels to provide structural strength and chemical resistance to the cabinet. Now that the exterior panels are welded, work can begin on welding interior components such as drawer rails.

 

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