| 摘要 |
PROBLEM TO BE SOLVED: To provide a hermetically sealed hollow container wherein the carrying over of a chemical is eliminated, the cleaning property is excellent, and the strength is high, and which is suitable for the storage of a high purity chemical by forming a container main body and a lid body which is fitted on the opening of the main body of a specified modified polytetrafluoroethylene which cannot be worked from a molten state. SOLUTION: This hermetically sealed hollow container 10 for chemical storage is constituted of a container main body 11 wherein a chemical storage section 11a is formed by cutting the internal surface, and a lid body 12 which is fitted on the opening 11b of the container main body 11. In this case, the container main body 11 and the lid body 12 are respectively formed of modified polytetrafluoroethylene which cannot be worked from a molten state. The modified polytetrafluoroethylene is a copolymer at least containing 0.001-1 wt.% of a component unit which is derived from perfluorovinyl ether represented by the formula: CF2=CF-O-X, and a component unit which is derived from tetrafluoroethylene. Then, the container main body 11 and the lid body 12 are integrated by re-sintering together with fusing. |
