Mold backing plate

The Scott Safety NIOSH-approved ACS i SCBA is designed for comfort, reliability and flexibility. Its molded back-plate and padded harness contribute to greater user comfort and reduced user burden and fatigue. With its reliable, quarter-turn, two-stage pneumatic system, the ACSi is engineered for reliability and ease of use. Scott Safety, www.scottsafety. com. Booth 1160. Circle 179... 

In many instances the friction material mix is integrally molded into holes within the backing plate or shoe. Painting of the final assembly, less common in North America, is the rule in Europe and Asia. For controlling brake squeal, noise insulators are widely used. These noise insulating layers are bonded or mechanically attached to the back side of the friction material backing plate. 

Backing piate n. In injection molding, a plate used as a support for the cavity blocks, guide pins, bushing, etc. Sometimes called support plate. 

Movable platen n. The large back plate of an injection molding machine to which the back half of the mold is secured during operation. This platen is moved either by a hydraulic ram or a toggle mechanism. 

A knockout system is required to eject the part from the mold (see Chapter 7 Mold Design"). On most machines there is an adjustable stationary ejector plate containing ejector bars which go through the movable platen. As the mold closes, the ejector bars go through the holes in the back platen of the mold, contact, and stop the mold knockout plate. The rest of the mold continues to close to a predetermined distance and stops. A superior method to activate the knockout system is by use of hydraulic cylinders. This permits advancing or retracting the knockout system with any speed or force. This can be particularly useful in cam and insert molding. 

Fig. 1 Exploded view of mold. (1) front plate, (2) frame plate, (3) back plate, (4) spacers, (5) cavity, (6) spacer hole, (7) fiber mat, (8) vacuum nozzle, (9) polymer feed nozzle, (10) temperature transducer, and (II) thermocouple.

Figure 2. Flow cell (excluding pump and titration cell). Left Front view. Right Cross section along center line. I. Perspex cover. 2. Outlet tube (back to titration cell). 3. Flow channel. 4. Counter electrode (platinum). 5. Metal plate with cut edge exposed in the channel. 6. Seal of molded silicone rubber. 7. Piston for removal of air fix>m reference electrode compartment. 8. Reference electrode compartment. 9. Capillary holes connecting 8 to 3.10. Inlet tube (from titration cell). II. Reference electrode (Ag/AgCI, sat. KCI). (Reprinted from Ref. 3, with kind permission from Elsevier Science Ltd., Kidlington, Oxford, UK.)...

From a cross-flow point of view it may be of interest to mention the phosphoric acid fuel cell with the so-called DiGas system (Fig. 9), which is an air-cooled cross-flow configuration for use in utility-power stations [39]. The process air stream is diverted into two types of channels into individual cells with relatively small cross-sectional area, and into cooling plates (approximately one for every five cells) with a lai ge cross-section. Bipolar plates were molded from a mixture of graphite and phenolic resin, with a Pt-on-carbon cathode and a Pt anode combined with colloidal PTFE on a graphite-paper backing. 

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