Gas-assisted base blow off methods for blow molding applications
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United States of America Patent
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Dec 29, 2020
Grant Date -
Feb 22, 2018
app pub date -
Dec 16, 2015
filing date -
Dec 19, 2014
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Abstract
This disclosure provides a method of manufacturing a polymer container according to a blow molding or stretch blow molding process, in which the base of the blow mold has at least one orifice for pressurized gas to enter the blow mold through the base. Introducing pressurized gas through the orifice in the blow mold base provides cooling assistance within the gas mold, much earlier than the cooling using conventional methods, which can reduce or eliminate the need for any post mold cooling. This method has been found to be applicable to non-hot fill application bottle and container manufacture.
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