FURNACE FOR ELONGATED ITEMS PACKING IN SHRINKABLE FILM Russian patent published in 2004 - IPC

FIELD: packing equipment, particularly furnaces for packing film shrinkage by hot air flow.

SUBSTANCE: furnace comprises conveyer with netted belt, outer case, inner case with side chambers, double roof and double floor divided by transversal partitions into several channels alternately connected to right and left side chambers. Furnace also has heaters and circulation fan with impeller arranged in roof. Located at least in one transversal channel at furnace inlet part is nozzle connected by air channel with side chamber. Remainder transversal channels comprise guiding air flow deflectors. Screen may be installed on roof of inner case and form longitudinal tunnel.

EFFECT: increased quality of resultant package, improved stability and economy of technological process due to improved heating of film edges to be welded, due to film sagging prevention in lower bag corners and due to prevention of film sticking to netted belt during film heating.

2 cl, 5 dwg