Patent ID: 6216420
Filing Date: 2001-04-17
Classification: B29C,B29K,B29L,B65B

Abstract:
A device for heat-sealing a tube of packaging sheet material filled with a pourable food product and fed along a vertical supply path, comprising:a first jaw comprising heating means, said heating means having a pair of substantially straight active surfaces, said active surfaces having longitudinal projections and extending on opposite sides of and parallel to an intermediate plane, said intermediate plane extending parallel to said supply path;a second jaw comprising a pair of seats, a pair of pressure pads housed in said seats, said seats extending on opposite sides of and parallel to said intermediate plane;said first jaw and said second jaw being movable towards each other in a direction crosswise to said supply path, said pressure pads of said second jaw co-operating with said heating means of said first jaw to grip said tube under pressure and to heat seal said tube along two respective transverse sealing lines;wherein said second jaw comprises two longitudinal supporting surfaces located on opposite sides of each of said seats and facing said first jaw; andwherein each said pressure pad has a pair of lateral lips adjacent to said two longitudinal supporting surfaces at said opposite sides of each of said seats.