Method and apparatus for forming fw type back seals

Details Method and apparatus for forming fw type back seals Method and apparatus for forming fw type back seals

B - Operations, Transporting

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C

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B29C 53/36 (2006.01) B29C 53/38 (2006.01) B29C 53/50 (2006.01) B29C 65/00 (2006.01) B29C 65/18 (2006.01) B29C 65/72 (2006.01)

Patent

CA 1314001

ABSTRACT An improved apparatus and method for providing uniform fin-type back seals with flexible packaging material for use in conjunction with form-fill-and-seal machines is disclosed which utilizes a moveable tucker plate disposed between the mated edges of the flexible packaging material. When sealing, the tucker plate moves against the body of the packaging material and prevents lateral movement of such material during the sealing operation. The tucker plate is joined to a sealing platen in a manner which maintain a fixed distance between the tucker plate and the sealing platen until a threshold sealing pressure is exceeded.

574030

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