Flexible continuous tape from multifilament yarn and method for making these
US8031996B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2008 |
| Grant date | Oct 4, 2011 |
| Priority date | — |
| Expiry date | Nov 26, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/60
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for making a flexible fibrous continuous tape containing 60 to 98 wt % fiber based on the weight of the tape, from multifilament yarn selected from aramid, glass, aromatic polyester, and rigid rod polymer, comprising the steps: a1) spreading the filaments of the yarn to obtain a filament layer having a cross sectional aspect ratio (w/h) of 2 to 2000; and b1) treating the spread filaments with a curable resin, or a liquid thermoplastic resin or wax; or a2) treating the yarn with the curable resin, or the liquid thermoplastic resin or wax; and b2) spreading the filaments of the yarn to obtain a filament layer having a cross sectional aspect ratio (w/h) of 2 to 2000; followed by c) fixating the filaments by curing or solidifying the resin to obtain the tape, wherein steps a1-b1, respectively a2-b2, and c are performed in-line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.