David C. Wallace - Lilburn GA, US Lars Wihlborg - Stratford CT, US Clifton Howell - Buford GA, US
International Classification:
B65D 33/00
US Classification:
383203
Abstract:
A method and apparatus is disclosed which include a pair of opposed seal bars for the manufacture of reclosable packages. The method and apparatus are particularly adaptable to form fill seal manufacture of reclosable packages. The first opposed seal bars includes a concave metal sealing surface and the second opposed seal bar includes a rubberized or otherwise deformable sealing surface. This allows a hermetic seal to be formed across an abrupt transition of thickness of material between the opposed seal bars, such as when a zipper ends adjacent to a side seal in a reclosable bag.