Plastic Manufacturing Philadelphia PA

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Incorporating fillers and additives broadens the property profile and thus the field of application of plastics. Production of material compounds is a common practice in plastics processing, but for economic reasons is generally limited to situations typified by large quantities and a standard assortment. Demand for special compounds, usually involving custom formulation sand amounts, will grow to the same extent that plastic applications expand into new niches. Compounds with a high percentage of long glass fibers or powdered additives in particular fall into this category. In keeping with this trend, Engel Austria GmbH has developed a system concept that combines a standard injection molding machine and a compounder in a modular manner. Moreover, the standard functions of each module remain fully intact; each can, if necessary, be operated independently of the other. Only the combination melds the two standard machines into an efficient system for special applications.

Universal system concept
Molded parts with a high long glass fiber content as well as a filler level as high as 65% of high-density material and a certain ratio of virgin to recycled resin are already appearing in bid specifications from automakers. Solutions to problems associated with special requirements can be found with complex material formulations, especially when it comes to confining engine compartment noise or ensure the stability of structural body components. In most cases, this requires material mixtures that are not available commercially and the composition of which must be optimized as part of the development process. Accordingly, the solution in this case is called inline compounding on the injection molding machine and transfer of the plasticated compound directly into the injection unit of the machine. In spite of the special requirements, EngelÕs own specifications stipulated that the system should not be a single-purpose combination, but rather a universally applicable standard injection molding machine with modular attachments.

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