In the plastic packaging industry (either PET or HDPE), manufacturing is based on 3 fundamental processes: Injection, Blow molding (or Injection-blow molding) and Extrusion. The injection process is used to obtain the preforms, caps, handles, and many other products. By means of a machine (with its respective molds) the resin pellets are converted into a piece with the desired shape.
There are conventional and high-speed PET injection molding machines. The difference lies in the post-cooling robot, which is present in the high-speed machines and allows a considerable reduction of the production cycle by reducing the time in the cooling stage.
Conventional machines, on the other hand, do not have a post-cooling system, but can provide the benefit of reduced costs for low-demand production.
HDPE injection molding machines, on the other hand, are mostly used for the production of conventional screw caps. These caps can have the tamper evident ring produced by the injection process itself, or through a subsequent cutting process.
HDPE injection molding machines can also be used to produce plastic handles, baskets, buckets and pallets. Obviously, the size of the machine varies depending on the size of the product to be produced.
PET Packaging Network offers injection molding machines of all types.
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