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Basics of Polymers by Muralisrinivasan Subramanian

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CHAPTER 8

Blow Molding

In polymer processing technology, blow molding is the third largest technique in the world [1]. This technique is used to produce hollow, thin-wall objects from polymer materials. It is not only used for the production of packaging items, but also used in increased industrial applications such as fuel tanks and ventilation components and in the fields of electrical and medical engineering [2]. It is also used in the automotive, sports and leisure, electronics, transportation, and packaging industries [3]. Blow molding processes can be divided into two main categories:

     •  extrusion blow molding,

     •  injection stretch blow molding.

Both processes involve the inflation of a parison (extrusion blow molding) or a preform ...

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