A vacuum sealing method and system for evacuating air from and sealing a flexible plastic bag of the type having a mating male rib and a female sealing channel closure along the length of the bag opening. A flowable liquid is applied to the female channel. The rib and channel are engaged along their...http://www.google.es/patents/US7316101?utm_source=gb-gplus-sharePatente US7316101 - Method and apparatus for vacuum sealing zip lock plastic bags
Method and apparatus for vacuum sealing zip lock plastic bags
