Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Industrie Chimiche Porto Marghera I C P M SpA
Original Assignee
Industrie Chimiche Porto Marghera I C P M SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Industrie Chimiche Porto Marghera I C P M SpAfiledCriticalIndustrie Chimiche Porto Marghera I C P M SpA
Priority to ES285221ApriorityCriticalpatent/ES285221A1/en
Publication of ES285221A1publicationCriticalpatent/ES285221A1/en
Improvements in the construction of valve bags, characterized in that the valve consists of at least one flexible organ in the form of an open bottom pocket with substantially one of the two walls of the pocket extended to form a fin or a longer lateral end, which pocket member is disposed inside the bag and has the upper transverse edge of its fin welded to the inner side of the bag over a cut made on the same side of the bag, while the longitudinal side edges of said bag they are welded to the same face of the bag until the beginning of the pocket, said pocket being finally welded transversely, only on one side of a wall thereof, to the same inside face of said bag, in order to allow the pocket to be free and open between the opposite faces of the bag and allowing the bag to be filled with material from said upper transverse cut. (Machine-translation by Google Translate, not legally binding)
ES285221A1963-02-091963-02-09Improvements in the construction of bags with valve (Machine-translation by Google Translate, not legally binding)
ExpiredES285221A1
(en)
Improvements in the construction of plastic bags or similar material equipped with valve and corresponding manufacturing procedure (Machine-translation by Google Translate, not legally binding)