Patent ID: 8272196
Filing Date: 2012-09-25
Classification: B26D,B26F,B29C,B65B

Abstract:
1. A system for wrapping products in film comprising: a feed conveyor adapted to deliver a series of products in a feed direction; a film delivery unit adapted to dispense a supply of film having first and second plies each having a free edge; a wrapping station adapted to receive the film from the film delivery unit and to wrap each of the products delivered thereto by the feed conveyor and juxtapose the free edges of the first and second plies proximate one another; a side seal assembly located downstream in the feed direction from the wrapping station to join the first and second plies together inboard of the respective free edges of the plies to form a side seal weld; wherein the side seal assembly includes: (a) a heated and stationary side seal mechanism adapted to both seal the first and second plies to form the side seal weld and separate a selvage portion of the plies outbound of the side seal weld, the side seal mechanism being stationary in rotation when at least one of the feed conveyor and the film delivery unit is in operation; (b) a heater operatively coupled to said side seal mechanism; and (c) an indexing mechanism operatively coupled to said side seal mechanism to index the side seal mechanism and expose a different portion of the side seal mechanism to the plies.