Heat seal die assembly

Abstract

A heat seal die assembly for heat sealing plastic sheets, both solid wall and mesh, which comprises the following: first and second heat seal bars forming heat seal lines in said plastic sheets, with the bars being spaced from each other. Each heat seal bar faces a separate backing plate, against which the plastic sheet heat sealing is effected by the heat seal bars. The separate backing plates are respectively carried by a single support plate. The backing plates are connected to the support plate by threaded members which permit adjustable spacing of each backing plate from the support plate, to correspondingly adjust the spacing of each backing plate and heat seal bar during heat sealing operations. Also, optionally, a third, separate backing plate faces a heated cutter, with the third backing plate being adjustably carried in similar manner on the support plate to provide adjustable spacing, and corresponding adjustment of cutting conditions.

Dependencies are inferred from the claim text.