| 摘要 |
PURPOSE:To provide the heat-sealing method of a packaging bag and an apparatus for the method by preventing a space between the bag and an article contained in the bag from becoming too large so that the tightness of the article and a sense of beauty acompanying the former are not damaged. CONSTITUTION:The heat-sealing apparatus 1 of a packaging bag heat-seals the opening end of the packaging bag 2, after the packaging bag 2 made of thermoplastic material is filled with an article 3, and is equipped with a sealer, which is put on the opening end of the packaging bag 2 to heat-seal a part, and with thermal shield means 5a, 5b cooled by a coolant between the sealer and a main body with the article contained in the packaging bag 2. |
