HEAT-RESISTANT FOOD CONTAINER, AND MANUFACTURING METHOD FOR SAME

摘要

Provided is a heat-resistant food container that exhibits high heat resistance up to 250°C and that can be manufactured inexpensively using low-cost standard PET resin, lower-cost PET resin for fibers and recycled PET flakes. The container is obtained by: adding a chain extender, a compatibilizer and talc to PET resin; introducing the same into an extruder (30) having at least 2 vent holes; suctioning/degassing the heated/molten PET resin using a high vacuum of at least -99.99kPa from the vent holes (33, 34), after which a sheet is formed by extrusion; vacuum/pressure forming the sheet using a thermoforming machine; and forming the container by retaining the formed product in a mold at 100-220°C. The combined amount of the crystalline portion and the talc content of the container is at least 25%.