| 摘要 |
PURPOSE:To enable an item laminated with a thermoweldable resin to be used, by drilling a number of jet ports in a surface of a block of a heat sealer, and joining raw films while jetting air from the ports. CONSTITUTION:A number of jet ports 11 are drilled in a surface of a block 9 of a heat sealer, then while air is being jetted from the ports 11, and parts of raw films 4, 5 where joining should be done are placed between the stock 9 and the heat bar 10 and are heated with an air layer formed between the stock 9 and the film to weld the parts, so that thermoweldable laminated films may be joined. It is preferable that the surface of the raw films where thermoweldable resins 6, 7, 8 are laminated is opposed to the stock, the edges are engaged, a joining tape whose opposite surfaces are laminated with thermoweldable resin is placed between the engaged edges and the joining is carried out. |
