Patent ID: 6080027
Filing Date: 2000-06-27
Classification: B63B,B63C

Abstract:
A method of forming an inflatable bag within a bag comprising the steps of:a. forming an outer inflatable bag with defining walls and with a peripheral sealable edge with the edge partially sealed leaving an unsealed edge portion for access to the interior of the outer bag,b. forming an inner inflatable bag with defining walls and with a peripheral sealable edge with the edge partially sealed leaving an unsealed edge portion for access to the interior of the inner bag,c. folding and inserting the inner bag through the unsealed edge portion of the outer bag, and there, unfolding and spreading the inner bag,d. cutting aligned valve receiving openings through the defining walls of the outer and inner bags,e. inserting and sealing valves to gas tightness in the aligned openings, andf. sealing the unsealed edge portions of the inner and outer bags.