Packaging applications injection-molded components

Applications for injection molding are numerous, and all but a few are colored. A few end uses are plastic containers and lids for the packaging industry, parts and components for toys, automobiles, electronics, appliances, etc. 

The high thermal conductivities of some PMCs has led to their increasing use in applications like spacecraft structures and electronic packaging components, e.g., printed circuit board heat sinks, heat spreaders, and heat sinks used to cool microprocessors. The addition of thermally conductive carbon fibers and ceramic particles to thermoplastics has opened the door to use of injection molded parts for which plastics previously could not be used because of their low thermal conductivities. We consider some examples in this section. 

The other two large applications for PP homopolymer are film and injection molding. Oriented PP film is highly utilized in packaging, building on it is stiffness, clarity, and gloss. It is a key component in pouches. Injection-molded articles include appliances where the polymer is frequendy talc filled for enhanced stiffness and heat resistance. Advantages include corrosion resistance. 

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