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Laurell Technologies WS-400 spin coater used to apply photoresist to the surface of a silicon wafer. Spin coating is a procedure used to deposit uniform thin films onto flat substrates. Usually a small amount of coating material in liquid form is applied on the center of the substrate, which is either spinning at low speed or not spinning at all.
Rotational molding excels at producing hollow parts. However, care must be taken when this is done. When the depth of the recess is greater than the width there may be problems with even heating and cooling. Additionally, enough room must be left between the parallel walls to allow for the melt-flow to move properly throughout the mold.
Slot-die coating is a non-contact coating method, in which the slot-die is typically held over the substrate at a height several times higher than the target wet film thickness. [23] The coating fluid transfers from the slot-die to the substrate via a fluid bridge that spans the air gap between the slot-die lips and substrate surface.
Spin casting is a favored method for fabricating items in the specified materials – low temperature metals and thermoset plastics. Compared to the two main competing processes, injection molding and (zinc) die-casting, spin casting has significant advantages in terms of startup cost and ease of use.
Needleless (also known as, nozzle-free) electrospinning [15] [16] Multiplying the needles [17] High-throughput roller electrospinning [18] Wire electrospinning; Bubble electrospinning [19] Ball electrospinning [20] [21] High speed electrospinning [22] Plate edge electrospinning [23] Bowl electrospinning [24] Hollow tube electrospinning [25]
4a, 4a-c, 4a-l, 4a-lc [ edit ] The basic 4A is a SOHC 8 valve carburated engine which produces 78–90 PS (57–66 kW; 77–89 hp) at 4800 rpm and 115 N⋅m (85 lb⋅ft) of torque at 2800 rpm, though the power and torque output figures vary between different regions of the world.
The earliest dip-coated products may have been candles. For flexible laminar substrates such as fabrics, dip coating may be performed as a continuous roll-to-roll process. For coating a 3D object, it may simply be inserted and removed from the bath of coating. For condom-making, a former is dipped into the coating.
Slide coating- bead coating with an angled slide between the slot-die and the bead. Commonly used for multilayer coating in the photographic industry. Slot die bead coating- typically with the web backed by a roller and a very small gap between slot-die and web. Tensioned-web slot-die coating- with no backing for the web. Inkjet printing ...