Molding-process control

MOLDEST Provides product design, mold design, and injection molding process control by Fujitsu Ltd., Tokyo, Japan. 

Apparently, in the nearest years we may expect new results in the field of phenomenological models which will become closer to molecular characteristics of polymers. This will facilitate a directed control of the properties of finite productes effectuated by means of variation of the molecular characteristics. At the present stage the above-discussed method of certification of raw materials proposed by the authors of this review and AN Prokunin may be useful for molding process control. 

Proper melt flow and compatibility of the plastics is required in order to provide the proper adhesion. The type of the available plasticator and mold process control adjustments can compensate some of the melt flow variable factors. 

Keywords injection molding, injection-compression molding, cascade injection molding, gas-assisted injection molding, process control, application. 

Table 7.6. Some Injection Molding Process Control Factors...

Injection mold process control Interior soft trim exterior in-mold ... 

Molded-in decorative effects are commonly used in thermoset moldings (e.g., boats, spas, eyeglass frames). Recently molded-in speckle and fiber decorative effects have been molded into thermoplastics for appliances and housewares. These rely upon dispersed particles (flake, metallized films, fibers) to provide the decorative effect. Techniques to maximize concentration of the decorative material near the surface and to control the dispersion have been facilitated by the improvement of injection molding process control systems. The application of decorative effects to a broader range of auto interior surfaces is encouraging the evaluation of molded-in decorative effects, especially in noncarpet, TPO flooring where more randomized designs are acceptable. 

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