US 11,639,020 B2 · Free blow bottle design

Abstract

An apparatus and method for simultaneously forming and filling a plastic container without the use of a mold forming a mold cavity (116, 16) is provided. A pressure source (120, 20) includes an inlet (146, 150, 46, 50) and a piston-like device (140, 40). The piston-like device (140, 40) is moveable in a first direction wherein liquid is drawn into the pressure source (120, 20) through the inlet (146, 150, 46, 50) and in a second direction wherein the liquid is urged toward the preform (112, 12). A blow nozzle (122, 22) may be adapted to receive the liquid from the pressure source (120, 20) and transfer the liquid at high pressure (P2) into the preform (112, 12) thereby urging the preform (112, 12) to freely expand until an unopened end thereof contacts a platen (118). The platen (118) forms a bottom in a resultant container. The liquid remains within the container as an end product.

Claims19

Dependent claims

A method of designing a plastic container comprising the steps of:

designing a first container to be formed in a first process;
forming a second container and a third container by a second process different from the first process;
comparing a sidewall profile of the first container to a sidewall profile of the second container and a sidewall profile of the third container, wherein a difference between the sidewall profile of the second container and the sidewall profile of the first container are greater than a difference between the sidewall profile of the third container and the sidewall profile of the first container;
selecting a third container preform used to form the third container;
and
employing a first container preform in the first process to form the first container, the first container preform having a preformed first container sidewall profile substantially equal to a preformed third container sidewall profile of the third container preform.

3 more elements

Dependencies are inferred from the claim text.

Free blow bottle design

Life of this patent

Free blow bottle design

Life of this patent

Abstract

Claims19