Flexible bags – Wall details – Pleated or gusseted
Reexamination Certificate
2003-01-17
2004-08-10
Pascua, Jes F. (Department: 3727)
Flexible bags
Wall details
Pleated or gusseted
C383S127000
Reexamination Certificate
active
06773162
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to the field of plastic bags of the type employed by retailers in packing food items and other merchandise, with particular application to bags that are unsealed or partially sealed along their top edges and include a promotional strip attached to the bag.
BACKGROUND OF THE INVENTION
In our prior U.S. Pat. No. 5,882,118 and its divisional method U.S. Pat. No. 6,068,584, we disclosed and claimed the attachment of advertising strips to T-shirt bags and a method for accomplishing such attachments during the course of fabricating such bags from extruded plastic tubing. Because the bags disclosed in our prior patent were heat-sealed along both their bottom and top edges, it was possible simultaneously to heat seal the ends of advertising strips to be attached to the bag along both the top and lower edges of such strips. These strips could be disposed either within the gussets of the bags or along an outside edge.
Attachment of advertising strips in the manner disclosed in our prior patents, however, cannot be accomplished where the top edges of the bag, such as those sometimes referred to as handle bags, flat bags and merchandise bags are left open at their top edges in order to enable merchandise to be placed in the bag. One type of such bags may have a central handle in contrast to the side handles of the T-shirt bags. When such open top edge bags are being produced, it is not possible to drop heating elements on each side of the cutting blade, transversely along the bag's division line and simultaneously heat seal the bottom of one bag and the top of the adjacent bag with the upper end of the advertising strip since the top edges of each bag must remain open. If it is, therefore, desired to provide open top edge bags with advertising strips, it is necessary to find some means and/or method for attaching the upper end of the advertising strip to the sides of one or both of the bag walls.
When advertising strips are attached to shopping bags there is sometimes a problem of movement of the strips with respect to the bags when the strips are secured only at the strip ends. For this reason it is necessary to develop methods for securing the strip to the bag walls between the strip ends.
SUMMARY OF THE INVENTION
(1) A plastic shopping bag with promotional strip ad may be formed from the following components. A pair of registering front and back walls is provided. The walls are secured together along their side and bottom edges and open across at least a portion of their top edges. The walls, when pulled apart from each other, defining a space into which articles may be placed. At least one of the secured together side edges is gusseted.
A plastic strip is located within the gusset. The strip has a first end and a second end and is of a length not greater than a length of the gusseted side edge. The first end of the strip is heat sealed to the bottom edge of the bag and the second end of the strip is adhered in the vicinity of the top edges of the bag walls. A portion of the strip between its first and second ends is removably attached to a remainder of the strip.
(2) In a variant of the invention the portion of the strip between its first and second ends is removably attached to the remainder of the strip with at least two perforation lines.
(3) In another variation, promotional material is printed upon at least an upper surface or a lower surface of the portion of the strip between its first and second ends that is removably attached to the remainder of the strip.
(4) In still another variant, a plastic strip is located along one side of a gusset. The strip has a first end and a second end and is of a length not greater than a length of a gusseted side edge. The first end of the strip is heat sealed to the bottom edge of the bag and the second end of the strip is adhered in the vicinity of the top edges of the bag walls. A portion of the strip between its first and second ends is removably attached to a remainder of the strip.
(5) In a variant of the invention the portion of the strip between its first and second ends is removably attached to the remainder of the strip with at least two perforation lines.
(6) In another variation, promotional material is printed upon at least an upper surface or a lower surface of the portion of the strip between its first and second ends that is removably attached to the remainder of the strip.
(7) In a further variant, a plastic strip is located within a gusset. The strip has a first end and a second end and is of a length not greater than a length of a gusseted side edge. The first end of the strip is adhered adjacent the bottom edge of the bag and the second end of the strip is adhered in the vicinity of the top edges of the bag walls. A portion of the strip between its first and second ends is removably attached to a remainder of the strip.
(8) In a variant of the invention the portion of the strip between its first and second ends is removably attached to the remainder of the strip with at least two perforation lines.
(9) In another variation, promotional material is printed upon at least an upper surface or a lower surface of the portion of the strip between its first and second ends that is removably attached to the remainder of the strip.
(10) In still a further variant, a plastic strip is located along one side of a gusset. The strip has a first end and a second end and is of a length not greater than a length of a gusseted side edge. The first end of the strip is adhered adjacent the bottom edge of the bag and the second end of the strip is adhered in the vicinity of the top edges of the bag walls. A portion of the strip between its first and second ends is removably attached to a remainder of the strip.
(11) In a variant of the invention the portion of the strip between its first and second ends is removably attached to the remainder of the strip with at least two perforation lines.
(12) In another variation, promotional material is printed upon at least an upper surface or a lower surface of the portion of the strip between its first and second ends that is removably attached to the remainder of the strip.
(13) In yet a further variant of the invention, a plastic strip is located upon at least one of the front and back walls between the side edges. The strip has a first end and a second end and is of a length not greater than the length of the walls. The first end of the strip is heat sealed to the bottom edge of the bag and the second end of the strip is adhered in the vicinity of the top edges of the bag walls. A portion of the strip between its first and second ends is removably attached to a remainder of the strip.
(14) In a variant of the invention the portion of the strip between its first and second ends is removably attached to the remainder of the strip with at least two perforation lines.
(15) In another variation, promotional material is printed upon at least an upper surface or a lower surface of the portion of the strip between its first and second ends that is removably attached to the remainder of the strip.
(16) In another variant, a plastic strip is located upon at least one of front and back walls between the side edges. The strip has a first end and a second end and is of a length not greater than the length of the walls. The first end of the strip is adhered adjacent the bottom edge of the bag and the second end of the strip is adhered in the vicinity of the upper edges of the bag walls. A portion of the strip between its first and second ends is removably attached to a remainder of the strip.
(17) In a variant of the invention the portion of the strip between its first and second ends is removably attached to the remainder of the strip with at least two perforation lines.
(18) In another variation, promotional material is printed upon at least an upper surface or a lower surface of the portion of the strip between its first and second ends that is removably attached to the remainder of the strip.
(19) In still another variant, the secured together first and second s
Daniels Mark E.
Wicherski Joseph L.
Belasco David A.
Belasco Jacobs & Townsley LLP
Pascua Jes F.
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