Bag machine and winder

Details Bag machine and winder Bag machine and winder

2006-09-14

2009-08-25

Kim, Sang (Department: 3654)

Manufacturing container or tube from paper; or other manufacturi

Container making

Pliable container

C493S196000, C493S197000, C493S198000, C493S202000, C493S205000, C493S208000, C242S528000

Reexamination Certificate

active

07578779

ABSTRACT:
A method and apparatus for making and winding bags is disclosed. The bag machine includes an unwind section, a forming section, and a winder. The winder has an infeed nip and two spindles. Each spindle is located along a respective one of two alternative film paths. The spindles can be fixed position spindles and the alternative film paths can be predominantly downward. An over speed nip may be provided between the infeed nip and the alternative film paths to separate rolls or to separate all bags. An overlapper can be included. Rods that travel in an elliptical orbit, and/or air nozzles can be part of the overlapper. Air nozzles can also be used to direct the film to the appropriate alternative path. Conveyor belts along the alternative film paths can be used to guide the film. Static pinners can be used to help bold the bags to the conveyor, or the last bag to the roll. Pop-up fingers and air horns can help start the roll on a spindle. Paper banders can be use, as can pneumatic devices. A push off device that scrape the spindles over substantially 360 degrees can be used.

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PCT Notification of Transmittal of the International Search Report and Written opinion of the International Search Authoity, or the Declaration.

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