Recyclable heavy-gauge films and methods of making same
US12365749B2 · kind B2 · utility
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9Claims
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Key dates
| Filing date | Nov 29, 2022 |
| Grant date | Jul 22, 2025 |
| Priority date | — |
| Expiry date | Jun 10, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2519/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Methods of making recyclable heavy-gauge films are provided. The methods of the present disclosure involve bonding the inner layers of a coextruded blown film together such that the film is sufficiently thick enough for it to be oriented in the MDO section using the typical 5:1 orientation ratio and result in a film with twice the gauge typically made by the MDO process (while maintaining acceptable stiffness and dimensional rigidity). Recyclable heavy-gauge films formed by the methods are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.