Resources Contact Us Home
Method for sealing zipper assembly to bag making film at three or more points

Image Number 4 for United States Patent #6993886.

A method for sealing a zipper assembly to bag making film at three or more points. The zipper assembly comprises a short zipper flange and a long zipper flange. The short flange is joined to one wall of the package while the long flange is joined to both walls of the package to define a product space in which the product is contained. Both the short and long zipper flanges are sealed to the bag making film at a first sealing station prior to folding of the film. After folding, the long zipper flange is sealed at one or more zones of joinder to the other side of the folded film. If the zipper assembly is attached in proximity to the fold line, then the second sealing operation is performed before filling and the bag is filled through the package bottom. If the zipper assembly is attached near the edge of the web of bag making film, then the second sealing operation is performed after the filling operation.

  Recently Added Patents
Method and apparatus for band switching in wireless local access network
Solid-state imaging device, method for manufacturing solid-state imaging device, and electronic apparatus
MIM capacitor and associated production method
Automated pizza preparation and vending system
Antibody recognizing turn structure in amyloid .beta.
Nanowire structured photodiode with a surrounding epitaxially grown P or N layer
Selecting content for storage in a multi-device cache
  Randomly Featured Patents
Use of 1-[4-(5-cyanoindol-3-yl)butyl]-4-(2-carbamoyl-benzofuran-5-yl)-pipe- razine and its physiologically acceptable salts
Windshield washer nozzle assembly retention bracket and hook plate
Apparatus for cleaning submerged surfaces
Gauge wheel apparatus
Method for revealing semiconductor surface damage using surface photovoltage (SPV) measurements
Integrated bed drawer assembly for vehicles
Aerodynamically contoured sleeper apparatus
Electret transducer with tapered acoustic chamber
Photosensitive element for preparing a phosphor pattern