Abstract: Methods of and apparatus for making plastic containers with integral rims, utilizing a transfer ring means having an aperture and an annular groove, in which the aperture is closed to define a space for reception of thermoplastic material, which is compressed to form it into a diaphragm with the material filling said groove forming the rim of the diaphragm, the transfer means carrying the diaphragm is positioned on a mold having a cavity corresponding to the shape of the container, the diaphragm is formed into a container in the mold cavity, and the container is removed from the transfer means with the rim of the diaphragm as molded in said groove intact with the container and forming the rim of the container.

Abstract: Methods of and apparatus for making plastic containers with integral rims, utilizing a transfer ring means having an aperture and an annular groove, in which the aperture is closed to define a space for reception of thermoplastic material, which is compressed to form it into a diaphragm with the material filling said groove forming the rim of the diaphragm, the transfer means carrying the diaphragm is positioned on a mold having a cavity corresponding to the shape of the container, the diaphragm is formed into a container in the mold cavity, and the container is removed from the transfer means with the rim of the diaphragm as molded in said groove intact with the container and forming the rim of the container.

Abstract: A method of making a one-piece plastic container having a body, a raised bottom and a flange integral with the bottom and the body joining the bottom edge of the body and the periphery of the raised bottom, the flange being sealed to the lower portion of the body which surrounds the flange. The container is initially molded with a bottom integral with its body at the bottom edge of the latter, and the bottom is displaced to a raised position relative to the bottom edge of the body with accompanying formation of the flange.