Invention Grant
- Patent Title: Polyester packaging material
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Application No.: US16957275Application Date: 2018-12-27
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Publication No.: US11760873B2Publication Date: 2023-09-19
- Inventor: Kelan Wieloch , Venumadhava S. Eleswarapu , Scott Stamback , James C. Walsh , Fred Biemuller
- Applicant: Penn Color, Inc.
- Applicant Address: US PA Doylestown
- Assignee: Penn Color, Inc.
- Current Assignee: Penn Color, Inc.
- Current Assignee Address: US PA Doylestown
- Agency: Fox Rothschild LLP
- International Application: PCT/US2018/067676 2018.12.27
- International Announcement: WO2019/133713A 2019.07.04
- Date entered country: 2020-06-23
- Main IPC: C08L67/02
- IPC: C08L67/02 ; B65D81/30 ; C08J5/18 ; C08L67/04 ; B32B27/36

Abstract:
White goniochromatic packaging article. The package wall containing a composition useful for blocking light in the spectrum ranges from about 200 nm to about 1200 nm. The composition has polyester, polymethylpentene, and a light scattering pigment. The composition optionally includes at least one other colorant. Each of the polymethylpentene and the light scattering pigment comprise about 0.1 to about 0.5 weight percent of the wall. The polyester and polymethylpentene are immiscible and when subjected to orientation stresses the composition produces a goniochromatic packaging article.
Information query