FOAMED PET PACKAGING

摘要

This invention provides packages and containers (201) produced by a solid state method for the manufacture of foam polymeric material (204). The packages are suitable for pre-cooking or sterilization, insulated transport, cooking vessel, reheating, and storage of food. The gas impregnated thermoforming (GIT) process includes interleaving an article of raw polymeric material with a gas channeling means; exposing the article to a non-reacting gas at elevated pressure to achieve a desired concentration of gas within the polymer (204), thereby forming a partially gas-saturated article (201), separating it from the gas channeling means, the decompressing, foaming and forming it at a temperature below the material's melt temperature; and finally trimming it to produce a finished foamed polymeric material (204) and recycleable scrap solid state process foamed polymer.