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US 8,997,817 B2Granted
Plastic bag making apparatus
AssigneeTotani Corporation
InventorMikio Totani
Life of this patent
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Abstract
An apparatus makes plastic bags in succession by intermittently feeding webs of plastic film longitudinally along a path. Movable units are spaced apart along the path and are driven by drive units, one for each movable unit, longitudinally of the film webs. Control switches, one for each movable unit, works on each drive unit to move the corresponding movable unit for position adjustment. The film webs are processed by at least some of the movable units whenever being fed intermittently, to successively make the plastic bags.
Claims6
An apparatus for successively making plastic bags of plastic film, the apparatus comprising:
- a feeding assembly by which webs of plastic film are fed longitudinally thereof and intermittently along a path;
- a plurality of movable units spaced from each other along the path, the movable units being supported for movement longitudinally of the webs of plastic film;
- a plurality of drives each of which is mounted on each of the movable units for moving each of the movable units;
- and
- a plurality of control switches, each of the movable units being provided with each of the control switches, each of the control switches corresponding to each of the movable units, each of the control switches working on each of the drives to move the corresponding unit for adjustment of position when being actuated, the webs of plastic film being processed by at least some of the movable units whenever being fed intermittently, to successively make the plastic bags,
- wherein each of the control switches comprises an independent move switch actuated to move the corresponding unit singly, and
- wherein each of the control switches comprises an interlocking move switch in addition to the independent move switch, the interlocking move switch being actuated to move the corresponding unit along with other units.
4 more elements
Dependencies are inferred from the claim text.