초록 ▼

A pack of plastic bags which are preferably self-opening are adapted to be mounted on a support rack and leave no residue on the support rack when removed therefrom. The plastic bags include front and rear walls integrally joined at their sides and secured at their bottoms and defining an open mouth

A pack of plastic bags which are preferably self-opening are adapted to be mounted on a support rack and leave no residue on the support rack when removed therefrom. The plastic bags include front and rear walls integrally joined at their sides and secured at their bottoms and defining an open mouth portion at the top of the walls. A detaching central tab is formed at the top of each of the walls and each has an aperture therein for mounting the central tabs on a tab retaining device on the rack. The tab of at least the rear wall has a structure to propagate a tear through the tab for detaching the tab from the rack while retaining sufficient strength in the portion of the tab above the mounting aperture to prevent premature tearing of the tab and detaching from the rack.

대표청구항 ▼

[ We claim:] [1.] A pack of plastic bags adapted to be mounted in a generally vertical suspended position on a rack which includes a central tab retaining device, each of said bags comprises:front and rear walls integrally joined at their sides and secured together at their bottoms and defining an o

[ We claim:] [1.] A pack of plastic bags adapted to be mounted in a generally vertical suspended position on a rack which includes a central tab retaining device, each of said bags comprises:front and rear walls integrally joined at their sides and secured together at their bottoms and defining an open mouth portion at the top of said walls;a detaching central tab at the top of each of said walls and each having an aperture therein for mounting the central tabs on the tab retaining device of the rack; andmeans for propagating a tear from said tab mounting aperture to said open mouth for detaching of said tab from the rack tab retaining device while retaining sufficient strength in the portion of said tab above the mounting aperture to prevent premature tearing of said tab and detaching from the rack tab retaining device, said means comprising a V-shaped cut-out in at least said rear wall and extending from said open mouth at the top of said tab toward said tab mounting aperture and a nick formed in said wall and extending from said V-shaped cut-out toward said tab mounting aperture. [2.] A pack of T-shirt type plastic bags adapted to be mounted in a generally vertical suspended position on a rack which includes at the top thereof two outwardly-extending support arms laterally spaced from each other and a central tab retaining device of inverted U-shaped wire loop type having a predetermined maximum width, each of said bags comprises:front and rear walls integrally joined at their sides and secured together at their bottoms and defining an open mouth portion at the top of said walls;laterally-spaced upwardly-extending handles on each side at the top and each having an aperture therein for mounting said handles on the respective support arms of the rack;a detaching central tab at the top of each of said walls and each having an aperture therein for mounting the central tabs on the tab retaining device of the rack; andmeans for propagating a tear from said tab mounting aperture to said open mouth for detaching of said tab from the rack tab retaining device while retaining sufficient strength in the portion of said tab above the mounting aperture to prevent premature tearing of said tab and detaching from the rack tab retaining device, said means comprising a V-shaped cut-out in at least said rear wall and extending from said open mouth at the top of said tab toward said tab mounting aperture and a nick formed in said wall and extending from said V-shaped cut-out toward said tab mounting aperture. [3.] A pack of T-shirt type plastic bags adapted to be mounted in a generally vertical suspended position on a rack which includes at the top thereof two outwardly-extending support arms laterally spaced from each other and a central tab retaining device of inverted U-shaped wire loop type having a predetermined maximum width, each of said bags comprises:front and rear walls integrally joined at their sides and secured together at their bottoms and defining an open mouth portion at the top of said walls;laterally-spaced upwardly-extending handles on each side at the top and each having an aperture therein for mounting said handles on the respective support arms of the rack;a detaching central tab at the top of each of said walls and each having an aperture therein for mounting the central tabs on the tab retaining device of the rack;means for propagating a tear from said tab mounting aperture to said open mouth for detaching of said tab from the rack tab retaining device while retaining sufficient strength in the portion of the tab above the mounting aperture to prevent premature tearing of the tab and detaching from the rack tab retaining device, said means comprising a V-shaped cut-out in at least said rear wall and extending from said open mouth at the top of said tab toward said tab mounting aperture and a nick formed in said wall and extending from said V-shaped cut-out toward said tab mounting aperture; andsaid aperture in said tab of both of said front and rear walls having a maximum width dimension in the open relaxed condition thereof prior to being mounted on the rack which is less than the predetermined width of the tab retaining means of the rack and having a minimum width dimension in the stretched condition thereof after being mounted on the rack which is greater than the predetermined width of the tab retaining device of the rack to adapt said tab mounting apertures of said bag to be stretched over the tab retaining device of the rack when said bags are mounted on the rack to prevent wedging of said bag detaching tabs behind the tab retaining device of the rack for complete detachment of said tabs from the rack and to cooperate with the nick to propagate a tear for detaching the bag tabs from the tab mounting device of the rack.