초록 ▼

Ventilation slits are placed in a plastic bag wall for opening in response to tension passing through the bag wall as the bag is carried. A conventional bag has a front bag wall, with the front bag wall having a top, a bottom, and two parallel side edges. The rear bag wall is of identical constructi

Ventilation slits are placed in a plastic bag wall for opening in response to tension passing through the bag wall as the bag is carried. A conventional bag has a front bag wall, with the front bag wall having a top, a bottom, and two parallel side edges. The rear bag wall is of identical construction. The bag is conventionally sealed at the sides and bottom and typically carried from the top. The bag is improved by providing at least one bag wall with a plurality of vent apertures. In the preferred embodiment, each vent aperture has a first slit and a second slit with the slits inclined both to one another and with respect to the edges of the bag wall. Preferably, the vent apertures defined by the inclined slits overlying one another in parallel spaced apart relation. When the plastic bag is loaded at the bottom and carried from the top, stress in the bag wall or passes around the slits, causing the slits to open as vent apertures responsive to the stress. While inclined slits are preferred, embodiments are shown with an array of horizontally disposed slits for the ventilation, these slits preferably being in rows and columns.

대표청구항 ▼

[ What is claimed is:] [1.] In a plastic bag having:a front bag wall having a top, a bottom, and two parallel side edges;a rear bag wall having a top, a bottom, and two parallel side edges;first and second connections between the front bag wall and the rear bag wail at the two parallel side edges of

[ What is claimed is:] [1.] In a plastic bag having:a front bag wall having a top, a bottom, and two parallel side edges;a rear bag wall having a top, a bottom, and two parallel side edges;first and second connections between the front bag wall and the rear bag wail at the two parallel side edges of the front bag wall and the rear bag wall for forming a continuous bag body about a central portion of the plastic bag;a bottom connection between the front bag wall and the rear bag wall at the bottom of the front bag wall and the rear bag wall for forming a bottom of the plastic bag under the central portion of the plastic bag; and,a bag handle with an opening configured at a top portion of the front and rear bag wall to permit the plastic bag to be grasped at the handle and to permit the plastic bag with contents to be transported while tension stresses pass through the front bag wall and the rear bag wall to the bottom connection;the improvement to the bag comprising:at least one of the front bag wall or rear bag wall has an array of vent apertures at a central portion thereof, said array including rows of vent apertures, said rows each having adjacent apertures spaced apart by a connection,said array positioned below the bag handle and having a boundary defined by uninterrupted and continuous portions of the at least one wall which includes the array, a first of said portions of the at least one wall spacing the array away from the handle, a second of said portions spacing the array from the bottom connection and a third of said portions extending from the boundary of said array to at least one parallel side edge of the at least one wall;each vent aperture comprising a linear slit which extends in a direction which is at an angle to a direction that tension stresses pass along said at least one wall when the bag is carried with its contents; andat least one of the rows of vent apertures of said array overlying another of said rows on said at least one wall whereby when the plastic bag is carried, tension stresses in a said at least one wall pass around the vent apertures in the central portion of the at least one wall causing the vent apertures to open in response thereto at the linear slits.