Extruder and method for producing high fiber density resin structures
US10336016B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2012 |
| Grant date | Jul 2, 2019 |
| Priority date | — |
| Expiry date | Aug 13, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249948
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An extruder (1) and a method for producing high-fiber volume reinforced thermoplastic resin structures (50), as well as a tape (156) having opposing resin rich portions (302) and a fiber rich portion (304) disposed therebetween and a method for impregnating at least one fiber roving (142) with a polymer resin to form a tape (156. The extruder (1) includes an impregnation die (3) having a channel (4) that applies pressurized molten thermoplastic resin to a plurality of rovings (142) drawn through the channel (4), and a die (3) faceplate (5) facing the downstream side (34) of said die (3). The faceplate (5) has a plurality of sizing holes (42) or a slot (75) arranged along a line that the resin-impregnated rovings (142) are simultaneously drawn through that remove excess resin and pultrude the resin-impregnated rovings (142) into rod-shaped or sheet-shaped structures. The faceplate (5) is spaced apart from the downstream side (34) of the die (4) to provide a gap (6) between the die (4) and a back side of the faceplate (5).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.