초록 ▼

In a stack of vest-style carrier bags S, each bag (10) comprises a front layer and a rear layer of flexible plastics material joined at the base (14) and sides (16, 18) and defining an open mouth end (20). Handles (22, 24) extend from the open mouth end. A tab (32a, b) extends from each ply of mater

In a stack of vest-style carrier bags S, each bag (10) comprises a front layer and a rear layer of flexible plastics material joined at the base (14) and sides (16, 18) and defining an open mouth end (20). Handles (22, 24) extend from the open mouth end. A tab (32a, b) extends from each ply of material between the handles. An attachment block (26) is provided between the handles (22, 24) and the handles are separably attached to the block by perforated lines of weakening. Front and rear tabs (32a) are separably attached to the attachment block. The rear tab (32b) of one bag is also separably attached to the front tab of the next bag in the stack so as to effect pulling of the front tab of the next bag from the stack. A container C is also provided for the stack with an opening O for allowing the bag to be removed and the subsequent front tab to protrude therethrough.

대표청구항 ▼

The invention claimed is: 1. A stack of vest-style bags, each bag comprising a front layer and a rear layer of flexible sheet material, the layers defining a bag body having a closed base end, closed sides, an open mouth end opposite the base end, and two handle parts spaced from each other and ext

The invention claimed is: 1. A stack of vest-style bags, each bag comprising a front layer and a rear layer of flexible sheet material, the layers defining a bag body having a closed base end, closed sides, an open mouth end opposite the base end, and two handle parts spaced from each other and extending from the open mouth end, the front layer further defining a front tab extending from the open mouth end from a point between the two handle parts, the front tab being sufficiently long to allow it to hang down from the open mouth end toward the closed base end, the rear layer further defining a rear tab extending from the open mouth end from a point between the two handle parts, the stack of bags having attachment means to which the spaced apart handles of the bags in the stack are separably attached by lines of weakening at respective handle attachment points spaced from the mouth of each bag, the front and rear tabs being separably attached to that attachment means by lines of weakening at respective tab attachment points spaced from the open mouth end of each bag, the rear tab of each bag in the stack being separably attached to the front tab of a subsequent bag in the stack. 2. A stack of vest-style bags according to claim 1 in which each bag is made from an elongate tube, sealed along the base end and cut to define handles, a mouth and the tabs. 3. A stack of vest-style bags according to claim 1 in which each bag comprises two plys of material, sealed along the base end and side edges and cut to define the handles, a mouth and the tabs. 4. A stack of vest-style bags according to claim 1 in which the attachment means comprises a block of bag material, comprising multiple layers of bag material. 5. A stack of vest-style bags according to claim 1 in which the lines of weakening by which the handles and the tabs are attached to the attachment means comprise lines where the bag material is cut through, leaving only a small area connected. 6. A stack of vest-style bags according to claim 5 in which a portion which remains attached is arranged a greater distance from a longitudinal centreline of the tab than the furthest extent of the attachment between the rear and subsequent front tabs. 7. A stack of vest-style bags according to claim 1 in which the attachment between the rear and subsequent front tabs is effected by means of an adhesive. 8. A stack of vest-style bags according to claim 1 in which the tabs can be locally deformed so that the material of the rear tab is pushed into a depression formed in the front tab of the next bag. 9. A stack of vest-style bags according to claim 8 in which one or both of the rear surface of the rear tab and the front surface of the front tab are treated to enhance the adhesion of the tabs together when locally deformed. 10. A stack of vest-style bags according to claim 9 in which the treatment is an electrostatic discharge treatment. 11. A stack of vest-style bags according to claim 1, in which the stack is retained, in use, so as to hang from the attachment means. 12. A stack of vest-style bags according to claim 11 in which a peg, pin or plate extends through a suitable aperture in the attachment means. 13. A stack of vest-style bags according to claim 11 in which a support member is received beneath the attachment means in the gap between the attachment means and the mouth of the bag. 14. A stack of vest-style bags according to claim 1 in which the stack of bags is received in a container and the container has an aperture which is arranged to allow the front tab of the top bag to protrude therefrom and, on removal of the top bag from the stack, allows the top bag to be removed open and the subsequent front tab to be pulled through the aperture. 15. A stack of vest-style bags according to claim 14 in which the container may be a box or a bag defining the aforesaid aperture and includes means to retain the attachment means in the container. 16. A stack of vest-style bags according to claim 1 in which the stack of bags is retained on an open stand. 17. A stack of vest-style bags according to claim 1 in which the front tab of each bag includes a marking or markings indicating that the user should pull the tab to remove the bag from the stack. 18. A stack of vest-style bags according to claim 1 wherein abutting tab surfaces of different bags are roughened prior to deformation. 19. A stack of vest-style bags according to claim 18 wherein the roughening is by an electrostatic discharge treatment. 20. A stack of vest-style bags according to claim 1 wherein the stack has a deformation separably attaching the rear tab of each bag in the stack to the front tab of a subsequent bag in the stack. 21. A container having therein a stack of vest-style bags, each bag comprising a front layer and a rear layer of flexible sheet material, the layers defining a bag body having a closed base end, closed sides, an open mouth end opposite the base end, and two handle parts spaced from each other and extending from the open mouth end, the front layer further defining a front tab extending from the open mouth end from a point between the two handle parts, the rear ply further defining a rear tab extending from the open mouth end from a point between the two handle parts, the stack of bags having attachment means to which the spaced apart handles of the bags in the stack are separably attached by lines of weakening at respective handle attachment points spaced from the mouth of each bag, the front and rear tabs being separably attached to the attachment means by lines of weakening at respective tab attachment points spaced from the open mouth end of each bag, the rear tab of one bag in the stack being separably attached to the front tab of the subsequent bag in the stack, the container having an aperture which is arranged to allow the front tab of the top bag to protrude therefrom and, on removal of the top bag from the stack, the top bag is removed open and the subsequent front tab is pulled through the aperture. 22. A stack of vest-style bags, each bag comprising a front layer and a rear layer of flexible sheet material, the layers defining a bag body having a closed base end, closed sides, an open mouth end opposite the base end, and two handle parts spaced from each other and extending from the open mouth end, the front layer further defining a front tab extending from the open mouth end from a point between the two handle parts, the rear layer further defining a rear tab extending from the open mouth end from a point between the two handle parts, the stack of bags having attachment means to which the spaced apart handles of the bags in the stack are separably attached by lines of weakening at respective handle attachment points spaced from the mouth of each bag, the front and rear tabs being separably attached to the attachment means by lines of weakening at respective tab attachment points spaced from the open mouth end of each bag, the rear tab of one bag in the stack being separably attached to the front tab of the subsequent bag in the stack at a tab to tab attachment point, the attachment means and attachment points being arranged so that, upon removal of a bag from the stack, the handle attachment points fail before the tab to tab attachment point. 23. A stack of vest-style bags, each bag comprising a front layer and a rear layer of flexible sheet material the layers defining a bag body having a closed base end, closed sides, an open mouth end opposite the base end, and two handle parts spaced from each other and extending along their respective lengths from the open mouth end away from the bag body, the front layer further defining a front tab extending from the open mouth end to a point between the two handle parts and midway along the length of the two handle parts, the rear layer further defining a rear tab extending from the open mouth end to a point between the two handle parts and midway along the length of the two handle parts, the stack of bags having attachment means to which the spaced apart handles of the bags in the stack are separably attached by lines of weakening at respective handle attachment points spaced from the mouth of each bag, the front and rear tabs being separably attached to the attachment means by lines of weakening at respective tab attachment points spaced form the open mouth end of each bag, the rear tab of one bag in the stack being separably attached to the front tab of the subsequent bag in the stack at a tab to tab attachment point and the front and rear tabs are formed from the respective front and rear layers. 24. A stack of vest-style bags, each bag comprising a front layer and a rear layer of flexible sheet material the layers defining a bag body having a closed base end, closed sides, an open mouth end opposite the base end, and two handle parts spaced from each other and extending from the open mouth end, the front layer further defining a front tab extending from the open mouth end to a point between the two handle parts, the rear layer further defining a rear tab extending from the open mouth end to a point between the two handle parts, the stack of bags having attachment means to which the spaced apart handles of the bags in the stack are separably attached by lines of weakening at respective handle attachment points spaced from the mouth of each bag, the front and rear tabs being separably attached to the attachment means by lines of weakening at respective tab attachment points spaced form the open mouth end of each bag, the rear tab of one bag in the stack being separably attached to the front tab of the subsequent bag in the stack at a tab to tab attachment point and the front and rear tabs are formed from the same material as the respective front and rear layers.