INRICHTING EN WERKWIJZE VOOR HET UIT EEN LANG VELDOORSTEEKLEMMET OVERBRENGEN VAN WARMTE.

摘要

A sheet piercing blade used to form perforate separation lines across continuous strip partible flattened tubular plastic film packaging bags is maintained a preselected optimum operating temperature by a heat transfer fluid medium circulating through a duct in substantially contiguous contact with the blade, a heat exchanger, and conduits connecting the duct and the heat exchanger.