Results 271 to 280 of about 10,064 (313)
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The plasticating process in injection molding
Polymer Engineering & Science, 1974AbstractA mathematical representation of the plasticating process in a reciprocating‐screw injection‐molding machine has been formulated as a design tool for simulating the effect of processing parameters on the melting performance, the melt temperature, and the pressure profile.
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Optimizing flow in plastic injection molding
Journal of Materials Processing Technology, 1997The mold and part design of plastic parts for injection molding is a complicated process, considerations for producing a part ranging from cost and speed of production to structural, ergonomics and aesthetic requirements. One of the routines faced by a designer when designing quality into a part is the process of cavity balancing.
L.W Seow, Y.C Lam
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Cavity balance for plastic injection molding
Polymer Engineering & Science, 2000AbstractCavity balancing is the process of altering the flow front within a cavity through thickness and design changes such that a desired fill pattern is achieved. This paper reports the preliminary research undertaken in developing an automated method for cavity balancing of two‐dimensional cavities. The aim of the automated cavity balancing routine
Y. C. Lam, L. W. Seow
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Plastics Injection Molding Process Improvement
2023The purpose of this thesis is to investigate, analyze the strategies that a small plastic injection molding factory uses. It emphasizes process improvement which is aligned with and support the factory's main strategies. The result from this thesis helps factory analyze, improve and monitor changes in business strategy that the company chooses to use ...
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Injection molding of plastic optics: the basics
Proceedings of SPIE, 1995BASICSA. N. "STRETCHT' HOFFU. S. PRECISION LENSMATERIALSWe primarily use three materials in our molding of plasticlenses: acrylic (PNMA), polycarbonate, and polystyrene.Acrylic is the most desirable.-it is the most widely used—the refractive index is 1.491-it is the hardest,most scratch resistant-it has the greatest transparency, preferred for ...
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Development of Plastic Pulley by Injection Molding
SAE Technical Paper Series, 1998<div class="htmlview paragraph">We have developed a plastic pulley for automobiles, manufactured by injection molding which will reduce manufacturing cost. We have developed product design, injection molding technology especially to improve mechanical strength and phenolic molding compound with good wear resistance and high mechanical strength ...
Fumishige Yoshizumi +2 more
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Manufacturing plastic injection optical molds
SPIE Proceedings, 2008ABCO Tool & Die, Inc. is a mold manufacturer specializing in the manufacturing of plastic injection molds for molded optical parts. The purpose of this presentation is to explain the concepts and procedures required to build a mold that produces precision optical parts.
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Machinery for injection molding of plastics
Chemical and Petroleum Engineering, 1971openaire +1 more source