Enhanced mixhead improves PUR spray molding of sandwich components.A new spray adapter for a high-pressure mixhead is said to boost output up to threefold in production of polyurethane sandwich components using the polyurethane spray molding (PSM PSM PlayStation Magazine PSM Process Safety Management (chemical industry) PSM Porsche Stability Management PSM Platform-Specific Model(s) PSM Platform Support Module PSM Professional Science Master's ) process. Krauss-Maffei Corp., Florence, Ky., now offers its MK 10 P2KV linear mixing head with the new spray adapter to overcome some limitations of the PSM process. In this open-mold process for producing multi-layer PUR parts, the highly viscous PUR reaction blend is typically pressurized pres·sur·ize tr.v. pres·sur·ized, pres·sur·iz·ing, pres·sur·iz·es 1. To maintain normal air pressure in (an enclosure, as an aircraft or submarine). 2. with compressed air compressed air, air whose volume has been decreased by the application of pressure. Air is compressed by various devices, including the simple hand pump and the reciprocating, rotary, centrifugal, and axial-flow compressors. in order to fluidize flu·id·ize tr.v. flu·id·ized, flu·id·iz·ing, flu·id·iz·es 1. To make fluid. 2. To pulverize (a solid) so finely that it takes on most of the properties of a fluid. it. In most cases, air channels are routed directly to the mixing chamber for that purpose. These are easily clogged, however, increasing the risk of downtime. This design also restricts the efficiency of these spray-type mixheads to an output rate of at most 30 g/sec. With the new PSM combination, the compressed air is metered into the viscous PUR blend in Verb 1. blend in - blend or harmonize; "This flavor will blend with those in your dish"; "This sofa won't go with the chairs" blend, go fit, go - be the right size or shape; fit correctly or as desired; "This piece won't fit into the puzzle" a chamber mounted on the mixhead. As a result, the fluidizing takes place in front of the spray-nozzle's discharge gap instead of in the mixhead itself. This is said to remove the risk of air-channel clogging, and there is also more space available for the air supply so that larger amounts of air can be delivered to provide higher output. Krauss-Maffei also offers a new wear-resistant version of the mixhead for spraying highly filled compounds, such as barium-sulfate-filled acoustic shields. Tel: (859) 283-0200 * PTDirect: 385BX [ILLUSTRATION OMITTED] |
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