| 摘要 |
<p>PCT No. PCT/CA90/00407 Sec. 371 Date Mar. 19, 1992 Sec. 102(e) Date Mar. 19, 1992 PCT Filed Nov. 21, 1990 PCT Pub. No. WO91/08954 PCT Pub. Date Jun. 27, 1991.A heat sealing device adapted for the clamping jaws of form, fill and seal machines. The heat sealing device in a single operation produces a transverse seal in thermoplastic film, tubular containers and severs the tube to simultaneously close the top of a filled container and create the bottom of a next-to-be-filled container. The base, upon which the heat sealing element is mounted, has slots that cause any product on the inner surfaces of the films in the area to be sealed to be removed, thereby producing consistently effective heat seals. The heat sealing device is particularly suitable for packaging flowable materials including, for example, chocolate sundae topping, thick sauces and dressings.</p> |
