Flexible bags – Bag having means to facilitate opening it by severing bag... – Including means for reclosing the bag
Reexamination Certificate
2000-01-27
2001-12-04
Pascua, Jes F. (Department: 3727)
Flexible bags
Bag having means to facilitate opening it by severing bag...
Including means for reclosing the bag
C383S086000, C383S205000, C428S040100, C428S352000
Reexamination Certificate
active
06325541
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a bag for containing a variety of particulate materials such as dog food, cat food, etc. More particularly, the invention relates to a resealable closure for a bag.
2. Description of the Related Art
Many types of bags have been previously designed for containing particulate materials such as dog food, cat food, etc. Normally, the bags for cat and dog food range in size from one pound bags to fifty pound bags. The conventional bags norrnally have a front wall member, a back wall member and opposite side wall members, with each of the wall members having upper and lower ends. Normally, the lower ends of the wall members are folded upwardly to form a flap which is sealed to either the back wall member or the front wall member to close the lower end of the bag. The upper end of the bag is also normally closed by folding the upper ends of the wall members downwardly to create a flap which is sealed to either the front wall member or the back wall member. When it is desired to pour the contents from the conventional bag, the upper flap is usually tom open, or a comer of the bag is ripped open, to enable a portion of the contents to be dispensed or poured therefrom. It is then difficult to reseal or reclose the bag after a portion of the contents has been poured therefrom.
SUMMARY OF THE INVENTION
A resealable closure for a bag is described wherein the bag has upper and lower ends with the bag including a front wall member having opposite side edges, a back wall member having opposite side edges, and side wall members extending between the side edges of the front and back wall members. When the bag is initially fabricated, the side wall members are folded inwardly between the front and rear wall members. The lower ends of the wall members are folded to form a lower flap which is sealed to either the front wall member or the back wall member to dose the lower end of the bag. The upper ends of the wall members are folded downwardly adjacent the front wall member to form a flap which extends across the upper end of the bag. The upper flap is permanently sealed, by an adhesive, to the front wall member except for a gap portion adjacent one of the side wall members. The flap portion is selectively movable between open and closed positions. The flap portion, when moved to its open position, creates a pour opening in the upper end of the bag adjacent the one side wall member to enable material in the bag to be poured therefrom through the pour opening. A resealable closure having an upper end, a lower end, opposite side edges, a front portion and a back portion is provided and has its upper front end adhesively secured to the back wall member in the unsealed flap portion with the upper end of the closure being positioned between the back wall member in the flap portion and the front wall member. The closure is selectively movable between an unsealed open position and a sealed closed position. The closure, when initially fabricated, is provided with a first release liner at its back portion which is adhesively secured, by a first adhesive, to a polyester sheet member having a second adhesive on its back surface which is initially covered with a second release liner which is removed prior to the closure being secured to the bag. The polyester sheet member and the first adhesive thereon remains on the front wall member when the closure and the flap portion are moved form their closed position to their open position. The first release liner is comprised of a non-stick material so that the material being poured from the bag will not adhere thereto. The first adhesive will not come into contact with the material being poured from the bag, since it is positioned on the front wall member and is not in the flow path of the material being poured from the bag.
It is therefore a principal object of the invention to provide an improved resealable closure for a bag.
Yet another object of the invention is to provide a bag including a resealable closure which may be opened to form a pour opening in one of the comers of the bag with the closure being designed so that the material being poured from the bag will not adhere to any sticky or tacky surface associated with the resealable closure.
Still another object of the invention is to provide a novel closure for a resealable bag.
Yet another object of the invention is to provide a bag having a resealable closure which is economical of manufacture and refined in appearance.
These and other objects will be apparent to those skilled in the art.
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Freeman James M.
Piper Wayne C.
Thrall Ronald G.
Bemis Company Inc.
Lee Mann Smith McWilliams Sweeney & Ohlson
Pascua Jes F.
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