Blowing
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With the introduction of polyethylene during the forties it has been easier to produce on a large scale and in a short time objects having a completely hollow shape and very useful for everyday life, such as bottles and containers.
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With the introduction of polyethylene during the forties it has been easier to produce on a large scale and in a short time objects having a completely hollow shape and very useful for everyday life, such as bottles and containers.
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