This process is a modification of the process and injection molding extrusi. In Extrusion blow molding, a tube is produced from the extruder and then clamped into the mold (mold) with a cavity larger than the tube diameter. Then the wind blows to fill the cavity. The process usually by blowing a blast of water with a pressure of 50-100 psi. In continuous operation extrusi process with a closed mold around the tube, both the top and bottom closed. Then after spending the cold products made product by ejection. Pipes and tubes made with a continuous blow molding, where the pipe or tube stretched and blown inside the mold.
In the Injection Blow Molding, A short tube (parison) is generated. Dies are then opened and the parison is transferred into a blow molding die. Hot air is injected into the parison, with the spread and fill the cavity. The types of products are bottles and containers.
In a multilayer blow molding is used coextruder tube or parison-parison to form a multi-layer structure. Examples of this type of structure is a multi-layer plastic food and beverage packaging.
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