Patent ID: 11046489

Abstract:
Provided are a food container which is formed to have a sealing moiety integrated with a lid or a container body and is not easily deformed when heated by a microwave oven or the like, so as to be capable of keeping a sealed state, and a method for manufacturing the food container. A food container 10 has a container body 11 having, in the upper surface thereof, an opening 111, and a lid 12 fittable to the container body 11 to close the opening 111. In the lid 12 or the container body 11, a sealing moiety 13 is located which makes the periphery of the opening 111 in a sealed state under a situation that the opening 111 is closed by the lid 12. The sealing moiety 13 includes an elastomer composition which includes a hydrogenated styrene based block copolymer A that has a weight-average molecular weight of 100,000 to 500,000, a softener B for rubber that has a weight-average molecular weight of 500 or more, and an olefin based resin C, and which has a hardness A of 5 to 70 both inclusive, and a compressive permanent strain (CS) of 60% or less at 100° C. over 24 hours. The sealing moiety is formed to be integrated with the lid or the container body, and the lid 12 or the container body 11 includes a polypropylene.