Mold Plates

Built-Up Mica. When the primary property needed for a particular appHcation is insulation, budt-up mica made by binding layered mica spHttings together serves as a substitute for the more expensive sheet mica. The principal uses for built-up mica are segment plate, molding plate, flexible plate, heater plate, and tape (7). 

To make a decorated plate, the mold is opened shortly after the main charge of molding compound has been pressed iato shape, the decorative foil is laid ia the mold on top of the partially cured plate, ptinted side down, and the mold closed again to complete the curing process. The melamiae-treated foil is thus fused to the molded plate and, as with the decorative lamiaate, the overlay becomes transparent so that the ptinted design shows through yet is protected by the film of cured resia. 

Mold plate that matches the mold and is used to fasten the mold to the machine. 

Figure 25 Schematic diagram of an injection/transfer molding machine [9]. (a) Hydraulic separation unit for upper mold plate, (b) Hydraulic separation unit for middle mold plate, (c) Shuttle system with automatic sprue nipple removal, (d) Brushing unit for cleaning middle mold plate, (e) Hydraulic ejector for automatic ejection.

The molded plate with the large volume of pores was further coated by chemical vapor-infiltrated (CVI) graphitic carbon at 1,500°C with 5 kPa... 

GmbH). A center mold plate separates the two processes and is supported by guide arms on the debars. During processing a robot loads a metal blank into the hydroform section and moves the shaped blank from the previous cycle to the IM side. The molds closing action drives the hydro-forming process, and the already shaped blank is overmolded with plastics. 

Gorlich, R., et al., Designing 48 Individual Cavities in One Mold Plate, MoldMaking Tech., Feb. 2003. 

Fig. 35 DMA trace of non-nucleated and -nucleated PP measured on 1 mm thick compression molded plates. Tests have been carried out in a torsion mode at 1 Hz with a heating rate of 1 K min 1...

ASTM E 23-66 was applied for the dimensions of standard specimens except that the mat reinforced specimen (GC 33 wt % ) used ASTM D 256-56. Specimens were taken from a molded plate along the longitudinal fiber direction, and V notches were cut edgewise, perpendicular to both fiber direction and molding surface. Occasionally a specimen notched on the molding surface (flatwise) was used. Tests were performed with an instrumented Charpy impact tester (10) with a 30 kg-m or 150 kg-cm capacity. Test temperatures were varied from — 196°-250°C. 

Compression molding is a process in which tablets are prepared from soluble ingredients such as sugars by compressing a powder mixture previously moistened with solvent (usually ethanol or water) into mold plates to form a wetted massJ ... 

The distribution of fiber in an injection molded plate is shown in Figures 7.5 to... 

Ca-stearate (HALS-III, without AO-II). Test specimens compression-molded plates (2.0 mm thick). Weathering test sunshine carbon arc lamp weather meter (WEL-SUN-HC, Suga Test Instruments Co., Ltd.). Black panel temperature 63 3 C, without water spray. Failure criterion time to 507, loss of original elongation (half life time = H.L.T.). IF = H.L.T. with stabilizer/H.L.T. without stabilizer. (b) Test specimens compression-molded sheets (0.5 mm thick). Aging test forced air circulation oven at 150 C. 

Conceptual Design -Brassboard Design - Molded-Plate Stack... 

However, if the upper mold plate and upper part of the middle section are maintained at temperatures well below what would initiate crosslinking, the residual cake can be integrated in the following cycle (cold runner transfer mold). 

Fig. 31 Mold plate with wood veneer embossing (left) and explosively embossed steel mold insert with holographic surface stmctures (right)...

Reproduction of irregular — The structured mold plate must be... 

Preparation of liyection-Molded Plates. The injection-molded sample was made of polymer pellets which have a molecular weight of about 1X10 (Toshiba Co., IS-130-FII). The molding conditions of polymers having different compositions were almost the same and details are given in Table HI. The dimensions of the samples used as heat distortion test pieces were 127 mm X 12.5 mm X 3.2 mm. 

This effect is fully corroborated by a dart drop test (DIN EN ISO 6603-2) with a 100 J dart and injection molded plates of 2 mm thickness, as shown in Fig. 18.24. In particular, the absorbed energy during the puncture event for the weak PP-g-MAH interphase is more than doubled compared to the normal composite without decoupling (moderate interphase). 

Die plate n. (1) In injection molds, a member that is attached to the fixed or to the moving head of the press mold plate, (2) In extrusion, especially of pellets or shapes, the die plate is that part of the die assembly that is bolted to the outlet of the die body and contains the orifices that form the melt into continuous strands or a particular cross-sectional shape. 

Triple-daylight mold n. A mold having four plates feed plate, floating cavity plate, stripper plate, and moving mold plate. When the mold opens, all the plates move apart making three openings among them. 

The basic parts of the mold are illustrated in Fig. 5.69. The sprue receives the polymer melt from the nozzle and delivers it to the runners. The runners are as short as possible and provide minimum pressure and temperature drop from the sprue to the cavity. There are four basic types round, half round, trapezoid, and modified trapezoid. Round runners are the most efficient type, but are the most expensive because they must be machined into both plates of the mold. Since half-round runners produce the highest pressure drops and greatest cooling of the melt, they are seldom recommended. Trapezoidal runners are a compromise between round and half round, and modified trapezoidal runners merely have rounded bottoms. These runners are machined into only one mold plate, but reduce the pressure and temperature losses observed with half-round runners. Runner sizes are determined from the part-wall thickness. The diameter of the runner connecting directly to the cavity is typically equal to the part thickness, and each upstream branch is increased in diameter as " ... 

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