Document Type and Number:
Japanese Patent JPS5550785
Kind Code:
B2
Abstract:
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.
Application Number:
JP11380176A
Publication Date:
December 19, 1980
Filing Date:
September 24, 1976
Export Citation:
International Classes:
B26D3/10; B26F3/06; B29C65/18; B29C65/24; B29C65/26; B29C65/74; B31B1/14; B31B19/64; B31B23/60; B65B61/12; B29C35/04
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