| 摘要 |
PURPOSE:To preserve foods in different taste for a long period of time at normal temperature by a method wherein a partitioned open container made of polybutylene terephthalate resin by injection molding is sealed up with a covering material. CONSTITUTION:A partitioned open container 4 having spaces 2 and 3 partitioned by a partitioning wall 1 is formed by injection molding out of a copolymer including telephthalic acid or its low-grade alcoholic ester serving as polybutylene telephthalate as its principal acid ingredient, 1,4-butanediol as its principal glycolic ingredient and containing another comonomer unit in 30mol% or below. After the container is filled with a plurality of foods in different taste, the container is sealed up with a covering material made of polyester sealant represented by polyethylene phthalate of polyethylene telephthalate being as its principal skelton and by one of the means including heat sealing, ultrasonic sealing, and electromagnetic wave induction heat sealing, and heat sterilization is applied with a retort kiln or the like. |
