Patent ID: 11891488
Assignee: BERRY GLOBAL, INC.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A sheet made of polymeric materials, the sheet comprising
a polypropylene base resin that comprises rubber, wherein the polypropylene base resin comprises a polypropylene impact copolymer,
wherein the sheet has a first transparency defined at least by a haze between about 10% and about 50% as measured using ASTM D 1003 procedure B,
wherein a predetermined portion of the sheet includes stress concentrator joints that extend upwardly away from a body of the sheet, the stress concentrator joints are arranged to move from a first arrangement in which the predetermined portion of the sheet has the first transparency to a second arrangement in which the stress concentrator joints extend downwardly relative to the first arrangement and the predetermined portion of the sheet has a second transparency that is different than the first transparency in response to a downward deformation force being applied to the stress concentrator joints, wherein a haze of the second transparency is greater than the haze of the first transparency so that the predetermined portion is at least partially opaque.