Injection molding, processing parameters

Literature Survey on Thermal Degradation, Thermal Oxidation, and Thermal Analysis of High Polymers. Ill , PLASTEC Note 20 (1969) 29) N T. Baldanza, Literature Search Injection Molding Processing Parameters , PLASTEC Note 21 (1969) 30) A.H. Landrock, Polyurethane... [Pg.788]

Injection molding (process parameters) barrel temperature °C 150-187... [Pg.352]

This method makes it possible to compare quantitatively the adhesion strength results of a wide range of material combinations under real manufacturing conditions. The influence of material formulations and injection molding process parameters can now he investigated with a high level of... [Pg.675]

Gunes, l.S. and Ersoy, O.G. (2006) Effects of injection molding processing parameters on appearance related optical properties of polycarbonate. J. Polym. Eng., 26, 743. [Pg.394]

Keywords injection molding, processing parameters, mold temperature, melt temperature, injection speed, holding pressure, skin-core morphol-ogy, spherulites, molecular orientation, a phase, 3 phase. Young s modulus, structure-property relationships, SCORIM, pol)nnorphism. [Pg.334]

Table 5.1 Injection molding processing parameters (T, thermomechanical variables y, 5j) of PLLA [7]...

TABLE 4-1. SUGGESTED INJECTION MOLDING PROCESSING PARAMETERS... [Pg.259]

As with microcellular extrusion, the standard injection molding process parameters such as melt temperature and cooling temperatures also affect the cell sizes and the level of weight reduction achieved as well as the other typical characteristics, such as shrinkage. The fill rates and pressure levels that develop in the injection process have an additional major effect on microcellular molded parts as compared to standard molding in that they affect the cell structure. As described in the original research, the rate of pressure drop and subsequently the number of nucle-ation sites will determine how many cells are formed and how uniform they will be. [Pg.208]

Xu J., "Effect of Injection Molding Process Parameters on the Morphology and Quality of Microcellular Foams ", TH ITEC, SPE, 2770-2774 (2006). [Pg.253]

Influence of the micro injection molding process parameters on the geometrical properties of the weld lines. [Pg.1562]

The purpose o this work is to show that the values for temperatures o mold and storage bulb are important parameters in injection molding process o rubber. The study was performed by using two different thicknesses for rubber sheets and two values for the cure enthalpy. The problem was solved by applying an explicit numerical method with finite differences (6). Although rubber vulcanization consists of a complex series of reactions (8), the overall cure heat could be described by a first-order reaction with a single activation energy, as shown previously (6). [Pg.280]

Ferradou C., B. Rochette, and J.M. Vergnaud. 1985. Effect of a variation in kinetic parameters (rate constant, activation energy) on the vulcanization of rubber sheets in injection molding process. J. Appl. Polym. Sci. 30 2663-74. [Pg.133]

The injection molding process includes both molten polymer and solidification phase, where flow and crystallization may take place simultaneously. Therefore, for modeling injection molding, a rheological relation connecting the relative crystallinity a to flow parameters is needed. [Pg.56]

The estimated parameter values for the modified two-domain Tait model are shown in the inserts in Figure 14.7. This model is often used for numerical simulation of injection molding processes involving finite element analysis for predicting the shrinkage behavior of injection molded articles. [Pg.199]