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US 2020/0270109 A1Published application
Method of inverting container base prior to cooling
AssigneeAmcor Rigid Packaging USA, LLC
InventorMichael T. LANE
Life of this patent
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Abstract
A method for hot-filling a polymeric container with heated product. The method includes mechanically inverting a base of the polymeric container prior to the heated product cooling in order to create a positive pressure within the container prior to cooling, and a vacuum in the container after cooling.
Claims24
A method for hot-filling a polymeric container made of a container material with heated product comprising:
- mechanically inverting a base of the polymeric container prior to the heated product cooling below a glass transition temperature of the container material to create a positive pressure within the container.
A method for hot-filling a polymeric container made of a container material with heated product comprising:
- filling the polymeric container with the heated product;
- heating the container material above a glass transition temperature;
- capping the polymeric container;
- mechanically inverting a base of the polymeric container prior to the heated product cooling to create a positive pressure within the container that reinforces the container;
- and
- subsequent to mechanically inverting the base, cooling the container and the product to create a negative pressure vacuum within the container.
3 more elements
Dependencies are inferred from the claim text.