| 摘要 |
PROBLEM TO BE SOLVED: To prevent cracks and fissures of a cover made of a styrene copolymer, by providing a plastic container wrapped up in a polyvinyl chloride film which contains a polyester plasticizer and an adipic acid diester as an essential components in the polyvinyl chloride film. SOLUTION: In a plastic container with a cover made of a styrene polymer and/or styrene copolymer, of which whole body is wrapped up with a polyvinyl chloride film so that the cover of container stuffed with food like lunch does not get out of place, a polyester plasticizer and adipic acid diester are combined as essential components in polyvinyl chloride film. A substance obtained from a condensation reaction of adipic acid, a 3-6C glycol or a 8-12C aliphatic monohydric alcohol is preferably used as the polyester plasticizer A. in this way, such troubles as cracks or fissues are brought on the cover are solved. |
