| 摘要 |
PURPOSE:To make vitamin E hard to be adsorbed to a mouth part of a container without spoiling elastic fitting property and sealability between the mouth part of the container and a cap by forming an inner plug which is fitted in the mouth part, of a flexible ethylene-vinyl acetate copolymer resin. CONSTITUTION:A cap 2 with a thread part 2a, protruding plug 2b and step part 2c is formed of a chemical resistant hard synthetic resin which does not adsorb vitamin E (e.g. polyethylene terephthalate, polybutylene terephthalate, etc.). For a single structural inner plug 5 which is made of a flexible ethylene- vinyl acetate copolymer resin, a fitting part 5a which is fitted in the inner peripheral wall of a mouth part (1a) of a container main body 1, an annular flange 5b which continues from the fitting part 5a and joins to the upper end surface of the mouth part (1a), and a nozzle part 5d which continues from the annular flange 5b and has a pour-out hole 5c are integrally formed respectively. A vinyl acetate content for the inner plug shall be 28-33wt.%. |
