Packaging machine and process

摘要

A conveyor system pre-inserts a portion of the web into a first belt before the portion is gripped between the first belt and a second belt. In one exemplary embodiment, a pair of lips of a web are inserted into a corresponding first pair of belts and then the pair of lips are secured in the first pair of belts by inserting a second pair of belts into the first pair of belts over the pair of lips.

主权项

1. A conveyor assembly for gripping a web material and moving the web material along a path of travel comprising:
a first endless conveyor belt having an endless web engaging recess formed therein; a second endless conveyor belt, the recess and the second belt having mating cross sectional configurations; a web pre-insertion device positioned to directly contact and press a portion of the web into said recess upstream of any contact between the second conveyor belt and the web; and a belt insertion device positioned to press the second endless conveyor belt both into contact with said portion of the web and into the recess downstream from where the pre-insertion device has pressed said portion of the web into the recess, wherein pressing the second endless conveyor belt into the recess by the belt insertion device causes the first and second belts to grip the web, wherein movement of the first and second endless belts moves the gripped web along the path of travel.