Methods of making a film of dynamically vulcanized thermoplastic elastomeric materials
US10875267B2 · kind B2 · utility
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22Claims
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Key dates
| Filing date | Apr 24, 2018 |
| Grant date | Dec 29, 2020 |
| Priority date | — |
| Expiry date | Nov 28, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2105/258
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Methods and systems for making a film made of dynamically vulcanized thermoplastic elastomeric material are provided herein. The subject methods and systems achieve dimensional stability of an elastic film by applying thermal treatment as part of the film making process and enhance the shrinkage of the film by intentionally with stretching the film while hot and freezing the film in the stretch. The systems and methods are useful in controlling shrinkage of DVA post film extrusion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.