Patent ID: 6290486
Filing Date: 2001-09-18
Classification: B29C

Abstract:
Apparatus for forming a molded article, which comprises:first and second mold cavities spaced from each other for forming molded articles;a feeding unit for separately engaging said first and second mold cavities for separately injecting plastic containing a volume expanding agent into said first and second mold cavities;means for moving said first mold cavity with injected plastic therein away from said feeding unit;means for expanding the first mold cavity while the second mold cavity is in engagement with the feeding unit to provide space for expansion of the volume of said plastic in said first mold cavity, wherein the volume of said plastic is expanded in said first mold cavity via said volume expanding agent while said second mold cavity is in engagement with said feeding unit; andmeans for ejecting the expanded article from the first mold cavity.