Chemistry: natural resins or derivatives; peptides or proteins; – Natural resins or derivatives – Tall oil or derivative used as starting material in process,...
Patent
1989-02-02
1991-09-10
Bray, W. Donald
Chemistry: natural resins or derivatives; peptides or proteins;
Natural resins or derivatives
Tall oil or derivative used as starting material in process,...
53206, 53228, 53388, 53441, B65B 1106
Patent
active
050462580
ABSTRACT:
A wrapping machine, particularly for wrapping cigarette packets in wrapper film, includes a series of endless band conveyors (148, 152, 156, 166, 170) carrying pushers (150, 154, 158, 172) for moving successive packets (191) along a straight wrapping line. One of the pushers (158) is heated to seal a wrapper seam. Opposed heated band conveyors (166) simultaneously seal end folds of the wrapper. Packets are gripped between opposed conveyors (145, 148) immediately after intercepting a wrapper (100). Partially-wrapped packets are arranged to slide relative to surfaces (149, 153, 157, 180) to attain wrap tightness. Successive conveyors (e.g. 156, 170) are independently driven to allow phasing of the conveyors to vary the position at which packets are transferred between them.
REFERENCES:
patent: 3127722 (1964-04-01), Schoder
Cahill Michael J.
Hinchcliffe Dennis
Patchett Jeffrey J.
Vernon Geoffrey W.
White Peter
Bray W. Donald
Molins PLC
Smith, Jr. John C.
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