Title:
GLASS DIRECT ROVING AND GLASS FILAMENT-REINFORCED THERMOPLASTIC RESIN PELLETS
Document Type and Number:
WIPO Patent Application WO/2021/199497
Kind Code:
A1
Abstract:
The present invention provides a glass direct roving which enables the achievement of good glass filament-reinforced thermoplastic resin pellet productivity, while being capable of achieving a good balance between excellent spinnability and good strength of a glass fiber-reinforced resin molded article that is produced using glass filament-reinforced thermoplastic resin pellets. This glass direct roving is configured by bundling a plurality of glass filaments; the filament diameters D of the glass filaments are within the range of from 17.5 μm to 21.5 μm; the number F of the bundled glass filaments is within the range of from 3,000 to 7,000; the mass of this glass direct roving is within the range of from 2,450 tex to 4,000 tex; the ignition loss L of this glass direct roving is within the range of from 0.03% to 0.90%; and the above-described D, F and L satisfy formula (1). (1): 1050 ≤ (D4 × F1/4)/(1000 × L1/6) ≤ 1640
Inventors:
NUKUI YOSUKE (JP)
TAKAHASHI YUTA (JP)
TAKAHASHI YUTA (JP)
Application Number:
PCT/JP2020/044337
Publication Date:
October 07, 2021
Filing Date:
November 27, 2020
Export Citation:
Assignee:
NITTO BOSEKI CO LTD (JP)
International Classes:
D02G3/18; D06M13/513; D06M101/00
Domestic Patent References:
| WO2005120438A1 | 2005-12-22 |
Foreign References:
| JP2018150650A | 2018-09-27 | |||
| JP2015157740A | 2015-09-03 | |||
| JP2019167668A | 2019-10-03 | |||
| JP2010202759A | 2010-09-16 | |||
| JP2009242551A | 2009-10-22 |
Attorney, Agent or Firm:
SATO & ASSOCIATES (JP)
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