Composite membrane and packaging structure
US11814538B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2021 |
| Grant date | Nov 14, 2023 |
| Priority date | — |
| Expiry date | Dec 31, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2307/4023
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present disclosure relates to a composite membrane and a packaging structure. The composite membrane comprises: a carrier layer; and an information layer, wherein the information layer is disposed on one side of the carrier layer along thickness direction of the composite membrane, and the information layer further comprises a light-transmitting layer, a first pattern layer, and a second pattern layer, which are disposed along the thickness direction of the composite membrane, wherein: the first pattern layer is disposed close to the carrier layer; the light-transmitting layer is disposed on one side of the first pattern facing layer away from the carrier layer; the second pattern layer is disposed on one side of the light-transmitting layer facing away from the carrier layer, and the second pattern layer and the first pattern layer present different visual information of one multi-dimensional object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.