Method of molding a synthetic resin container

Details Method of molding a synthetic resin container Method of molding a synthetic resin container

1986-10-07

1988-09-27

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

264321, 264322, 264554, B29C 4302

Patent

active

047740469

ABSTRACT:
A method of making a synthetic resin food container having a bottom wall, a side wall extending at an obtuse angle to the bottom wall and a rim or legs extending from the undersurface of the bottom wall. A device for making the container includes a male mold including a main body, a bottom forming portion received in the main body for vertical movement relative to the main body and a pressurizing portion disposed for vertical movement relative to the bottom forming portion and a female mold for receiving a portion of the bottom forming portion. The method of making the container includes the steps of forcing a portion of the bottom forcing portion into the female mold to form the bottom of the container, raising the bottom forming portion and substantially simultaneously moving the pressurizing portion to form the rim or legs on the bottom of the container.

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