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Thin-wall injection molding
- Mar 24, 2018 -

Thin wall injection molding is a specialized form of conventional injection molding that focuses on mass-producing plastic parts that are thin and light so that material cost savings can be made and cycle times can be as short as possible. Shorter cycle times means higher productivity and lower costs per part.

The definition of thin wall is really about the size of the part compared to its wall thickness. For any particular plastic part, as the wall thickness reduces the harder it is to manufacture using the injection molding process. The size of a part puts a limit on how thin the wall thickness can be. For packaging containers thin wall means wall thicknesses that are less than 0.025 inch (0.62mm) with a flow length to wall thickness greater than 200.

The trend towards thin wall molding continues to increase in many plastic industries as plastic material and energy costs continue to rise and delivery lead times are squeezed.

The following industries make use of thin wall molding:

  • food packaging ( e.g. food containers and lids)

  • automotive (e.g. both structural and non-structural car parts)

  • mobile telecommunications (e.g. mobile phone housings)

  • medical (e.g. syringes)

  • computing equipment (e.g. computer housings)


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