Roll of bags and method and device for producing the same
AssigneeFAS Converting Machinery AB
InventorKenneth Vinberg
Life of this patent
Estimating the term…
Abstract
Method and device for producing rolls (17) of bags. At least one longitudinal side edge (15, 16) of a line of overlapping bags (17) is folded towards the centre axis of said line of bags. The line is then winded to rolls (17).
Claims23
A method of producing plastic bags from a flattened flexible hose (10) including the steps of
- feeding the hose (10) in a longitudinal direction at a first speed,
- separating the hose (10) into bags (13) and feeding the bags (13) in a first line of bags, transferring bags of said first line of bags (13) to a second line (14,18) of bags,
- arranging bags (13) in said second line (14,18) of bags partly overlapping in the longitudinal direction of the second line (14,18) of bags,
- folding at least one longitudinally extending side edge (15,16) of said second line (14,18) of bags, and
- winding said second line (14,18) of bags to form rolls (17) of bags.
A device for producing plastic bags from a flattened flexible hose (10) including first conveyer (22) for feeding the hose (10), and means for separating hose (10) into bags running in a first line, characterised in
- that at least a second conveyer (29,30) is provided for feeding the bags in a feeding direction of a second line (14,18),
- that means (25,26) are arranged for transferring the bags from said first conveyer (22) to said second conveyer (29,30), so that the bags are overlapping in the feeding direction of the second line (14,18) and extending in a first plane,
- that means (32,33,34) are arranged for folding second line (14,18) transverse to said feeding direction of the second line (14,18), and
- that means (35) are arranged for winding second line (14,18) into rolls (17) of bags.
A method of producing plastic bags from a flattened flexible hose (10) including the steps of
- feeding the hose (10) in a longitudinal direction at a first speed,
- separating the hose (10) into bags (13) and feeding the bags (13) in a first line,
- transferring bags of said first line of bags (13) to a second line (14,18) of bags, arranging bags (13) in said second line (14,18) partly overlapping in the longitudinal direction of line (14,18),
- folding at least one longitudinally extending side edge (15,16) of said lines (14,18),
- winding said lines (14,18) to form rolls (17) of bags and
- disposing the rolls one by one into a box having an opening for pulling out bags.
A device for producing plastic bags from a flattened flexible hose (10) including first conveyer (22) for feeding the hose (10), and means for separating hose (10) into bags running in a first line, wherein
- at least a second conveyer (29,30) is provided for feeding the bags in a feeding direction of a second line (14,18),
- means (25,26) are arranged for transferring the bags from said first conveyer (22) to said second conveyer (29,30), so that the bags are overlapping in the feeding direction of the second line (14,18) and extending in a first plane,
- means (32,33,34) are arranged for folding second line (14,18) transverse to said feeding direction of the second line (14,18),
- means (35) are arranged for winding second line (14,18) into rolls (17) of bags,
- first suction conveyers (27,28) are provided to engage bags of said second lines (14,18),
- a plate (39) is provided below said first suction conveyers (27,28),
- a first set of rollers (32) is provided for folding longitudinally extending opposite side edges of the line (14) down from first suction conveyers (27,28),
- a second set of rollers (33) is provided for folding in said side edges towards the centre of the line (14) below the plate (39), and
- a third set of rollers (34) is provided for pressing said side edges towards the underside of the plate (39).
A method of producing bags from a flattened flexible hose (10) including the steps of
- feeding the hose (10) in a longitudinal direction at a first speed,
- separating the hose (10) in a manner to form a pair of bags (13) and feeding the pair of bags (13) in a first line,
- transferring bags of said first line of bags (13) to a second line (14) of bags operable at a second speed,
- arranging bags (13) in said second line (14) of bags partly overlapping in the longitudinal direction of the second line (14) of bags,
- folding at least one longitudinally extending side edge (15, 16) of said second line (14) of bags, and
- winding said second line (14) of bags to form rolls (17) of bags.
A method of producing a roll of separated overlapping bags comprising
- feeding a flattened flexible hose in one longitudinal direction,
- longitudinally separating the flattened flexible hose into two longitudinally extending sections,
- transversely separating and sealing the longitudinally extending sections to form opposing separated open top bags,
- feeding the separated bags formed from at least one of the two longitudinally extending sections in another longitudinal direction,
- overlapping at least some of the separated bags being fed,
- longitudinally folding the overlapped separated bags being fed in the other longitudinal direction, and
- rolling the overlapped and folded bags into a roll whereby the separated bags can be withdrawn from the roll at least one at a time.
Dependencies are inferred from the claim text.