Continuous fabrication system and method for highly aligned polymer films
US10427345B2 · kind B2 · utility
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Key dates
| Filing date | Apr 30, 2015 |
| Grant date | Oct 1, 2019 |
| Priority date | — |
| Expiry date | Apr 14, 2036 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD07B2205/2014
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Process for continuous fabrication of highly aligned polymer films. A polymer-solvent solution is subjected to a high shear, high temperature, Couette flow to extrude a thin film having polymer chain disentanglement. The extruded thin film is frozen and the solvent is allowed to evaporate to form a dried film. The dried film is mechanically drawn using a constant force, adaptive-thickness drawing system to align polymer molecular chains through plastic deformation. A suitable polymer is ultra-high molecular weight polyethylene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.