GRC (glass-resin composite) monofilament
US-11491820-B2 · Nov 8, 2022 · US
Glass direct roving and long glass fiber-reinforced thermoplastic resin pellet
US2022145021A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022145021-A1 |
| Application number | US-202017610544-A |
| Country | US |
| Kind code | A1 |
| Filing date | Nov 27, 2020 |
| Priority date | Mar 30, 2020 |
| Publication date | May 12, 2022 |
| Grant date | — |
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- Title
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Abstract
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Provided is a glass direct roving that can achieve good productivity for long glass fiber-reinforced thermoplastic resin pellets, and achieve excellent spinning productivity and good strength of glass fiber-reinforced resin molded articles produced by using long glass fiber-reinforced thermoplastic resin pellets in combination. The glass direct roving includes a plurality of glass filaments bundled together, wherein the filament diameter of the glass filaments, D, is in the range of 17.5 to 21.5 μm, the number of the glass filaments bundled, F, is in the range of 3000 to 7000, the mass of the glass direct roving is in the range of 2450 to 4000 tex, the ignition loss of the glass direct roving, L, is in the range of 0.03 to 0.90%, and the D, F, and L satisfy the following formula (1):1050≤(D4×F1/4)/(1000×L1/6)≤1640(1)
First claim
Opening claim text (preview).
1 . A glass direct roving comprising a plurality of glass filaments bundled together, wherein a filament diameter of the glass filaments, D, is in a range of 17.5 to 21.5 μm, a number of the glass filaments bundled, F, is in a range of 3000 to 7000, a mass of the glass direct roving is in a range of 2450 to 4000 tex, an ignition loss of the glass direct roving, L, is in a range of 0.03 to 0.90%, and the D, F, and L satisfy a following formula (1): 1 0 5 0 ≤ ( D 4 × F 1 / 4 ) / ( 1 0 0 0 × L 1 / 6 ) ≤ 1 640. ( 1 ) 2 . The glass direct roving according to claim 1 , wherein an attachment rate of a silane coupling agent, S, to a total amount of the glass direct roving is in a range of 0.010 to 0.200%, and the D, F, L, and S satisfy a following formula (2): 3 7 5 ≤ ( D 4 × F 1 / 4 × S 1 / 3 ) / ( 1 0 0 0 × L 1 / 6 ) ≤ 6 3 0 ( 2 ) 3 . The glass direct roving according to claim 2 , wherein the D, F, L, and S satisfy a following formula (3): 4 0 0 ≤ ( D 4 × F 1 / 4 × S 1 / 3 ) / ( 1 0 0 0 × L 1 / 6 ) ≤ 5 8 5 ( 3 ) 4 . The glass direct roving according to claim 2 , wherein the D, F, L, and S satisfy a following formula (4): 4 0 5 ≤ (
Assignees
Inventors
Classifications
- D02G3/18Primary
from glass or the like · CPC title
with at least one carbon-silicon bond · CPC title
Mineral fibres, e.g. slag wool, mineral wool, rock wool · CPC title
containing aluminium · CPC title
containing an oxide of a divalent metal · CPC title
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Frequently asked questions
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- What does patent US2022145021A1 cover?
- Provided is a glass direct roving that can achieve good productivity for long glass fiber-reinforced thermoplastic resin pellets, and achieve excellent spinning productivity and good strength of glass fiber-reinforced resin molded articles produced by using long glass fiber-reinforced thermoplastic resin pellets in combination. The glass direct roving includes a plurality of glass filaments bun…
- Who is the assignee on this patent?
- Nitto Boseki Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification D02G3/18. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Thu May 12 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).