Multi-film thermoplastic bags having grab zones secured to sidewalls via selfing and methods of making the same
AssigneeThe Glad Products Company
InventorJason R. Maxwell
Life of this patent
Estimating the term…
Abstract
One or more implementations of a thermoplastic bag with a grab zone of deformations including raised rib-like elements positioned in a high-touch area of the bag. For example, the thermoplastic bag includes a hem skirt non-continuously laminated to a sidewall by one or more raised rib-like elements. The grab zone regions of one or more raised-rib-like elements are located in visible and high-touch areas to provide visual and tactile cues of strength and durability. Moreover, the grab zone regions of one or more raised rib-like elements serve to distribute pull and lift forces across a wider area in order to avoid common failures in high-touch areas such as over stretching, punctures, tears, and rips.
Claims20
A thermoplastic bag comprising:
- opposing thermoplastic film sidewalls each comprising:
- a folded over top portion extending down an inner surface of the thermoplastic bag and forming a hem channel;
- a hem skirt extending from the hem channel toward a bottom of the thermoplastic bag;
- and
- a plurality of raised rib-like elements in a strainable network, the plurality of raised rib-like elements bonding the hem skirt to the inner surface of the thermoplastic bag;
- wherein each plurality of raised rib-like elements is configured to cause one of the hem skirts to separate from the respective thermoplastic film sidewall before the respective thermoplastic film sidewall fails when subjected to a force.
A multi-film thermoplastic bag comprising:
- first and second opposing sidewalls joined together along a first side edge, an opposite second side edge, and a closed bottom edge;
- a hem channel extending along a top edge of each of the first and second opposing sidewalls;
- and
- a respective hem skirt extending down an inner surface of each of the first and second sidewalls of the multi-film thermoplastic bag from the respective hem channel toward the closed bottom edge;
- and
- a plurality of raised rib-like elements in a strainable network bonding the hem skirt to the inner surface of the multi-film thermoplastic bag.
A method for making a multi-film thermoplastic bag comprising:
- folding a first thermoplastic film and a second thermoplastic film at a top edge to form a hem channel, at least a portion of the first thermoplastic film and the second thermoplastic film extending from the hem channel forming a hem skirt;
- passing the first thermoplastic film and the second thermoplastic film between a first set of SELF'ing rollers, wherein passing the first thermoplastic film and the second thermoplastic film between the first set of SELF'ing rollers creates one or more raised rib-like elements in a strainable network between a flat portion of the first thermoplastic film, a flat portion of the second thermoplastic film, and the hem skirt, the one or more raised rib-like elements extending from the hem channel over the hem skirt and toward bottom edges of the first thermoplastic film and the second thermoplastic film;
- and
- forming the first and second thermoplastic films into a bag.
Dependencies are inferred from the claim text.