초록 ▼

A bag closure is provided for containing flowable material such as powdered cement and mortar. The closure includes loosely folded, overlapping end flaps which are secured together by an overlying peel-away sheet. Where the bag is to be filled with moisture sensitive materials, the peel-away sheet i

A bag closure is provided for containing flowable material such as powdered cement and mortar. The closure includes loosely folded, overlapping end flaps which are secured together by an overlying peel-away sheet. Where the bag is to be filled with moisture sensitive materials, the peel-away sheet is preferably impermeable to water vapor and forms a vapor barrier closure. The peel-away sheet, which preferably controls the moisture content within the bag during storage, includes a graspable tab that is used to peel the sheet at least partially away from the loosely folded flaps of the bag. An end tuck of the bag may then be unfolded to provide a pour spout for the contents of the bag. The closure eliminates the need for prior art pull strings or sewn ends which are not easy to open and which do not adequately resist moisture penetration.

대표청구항 ▼

[ What is claimed is:] [1.] A bag containing a flowable material, the bag comprising:a tubular sidewall;a pair of oppositely disposed inwardly folded corner tucks at an end of the sidewall;a pair of oppositely disposed inwardly folded overlapping side flaps at the end of the sidewall lying adjacent

[ What is claimed is:] [1.] A bag containing a flowable material, the bag comprising:a tubular sidewall;a pair of oppositely disposed inwardly folded corner tucks at an end of the sidewall;a pair of oppositely disposed inwardly folded overlapping side flaps at the end of the sidewall lying adjacent the corner tucks;a flowable material contained in the bag; andpeel-away sheet means removably secured to the corner tucks and side flaps and including a graspable tab portion adjacent one of the corner tucks for allowing the tab portion to be grasped and peeled away from the adjacent corner tuck to allow the adjacent corner tuck to be unfolded to open the bag and to allow the flowable material to be removed from the bag while a portion of the peel-away sheet means remains secured to at least a portion of each of the side flaps.