Chicago Mold Engineering Co. Inc. designs, engineers and manufactures plastic injection and compression molds for the Thermoset and Thermoplastic industries.
This likely results in a further advance in the resin’s curing process. The formation of the skin layer happens by the incremental curing of the resin on the surface [71]. Englich [70] found out that higher mold temperatures and longer injection times result in a thicker skin layer, ...
. Melt and mold temperatures were varied as described in the design of experiments section. The injection-molding settings, such as molding pressure, holding pressure, injection volume, cooling time, among others, were kept constant during all the experiments; these settings are described inTable 1...
In an injection molding process, factors [2] that affect the final quality of the product include the quality of the plastic pellets, the injection speed, the injection pressure, the packing pressure [3], the melt temperature, and the mold temperature. Among the many variable factors, plastic...
The ejection of the part was facilitated by the use of four ejector pins at the periphery of the disk part cavity (Ø65 mm), which was larger than the micro-structured area of the mold insert (Ø45 mm). Figure 5. Mold geometry and cooling channels. Figure 6. Measurement positions...
Here, the true strain in the tensile direction is converted into a stress–strain diagram, and the true strain transverse to the tensile direction is used to calculate the true cross-sectional area, which is used to calculate the true stress. To determine the process influences on the ...
Water was employed in the cooling channels of the simulations, whereas polypropylene (PP) was used in the injection part. P20 mold steel was used for the fabrication of the mold. Among these components, it is widely accepted that water exists in a liquid condition, whereas PP and steel are...
sections with each set of sensors located in the center, which are labeled as near the gate (NG), middle, and far from the gate (FG). The mold design with the sensor fixer is shown inFigure 3. The purpose of the sensor fixer is to ensure the sensor is aligned with the mold ...
In order to understand the reasons of this behavior, the morphology of the elastomeric phase, the crystalline morphology and the cellular structure have been studied. The presence of the elastomer near the skin in the case of high mold temperature can explain the improvement produced with a high...
than that of the injection mold with a conventional heating channel. The curing efficiency could be increased by about 19.12% when the heating oil temperature of 180 °C was used to cure the fisheye optical lens. The simulation results showed that the equation y = −0.0026x3+ 1.3483x2−...