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无碱玻璃纤维直接无捻粗纱（以下简称直接纱）是由漏板直接拉制而成。根据浸润剂匹配的树脂不同，分为热固性直接纱和热塑性直接纱。 热固性直接纱是指适用于热固性树脂，如不饱和聚酯树脂，乙烯基脂树脂、环氧树脂和聚氨酯树脂。应用于纤维缠绕、拉挤、手糊和编织成型工艺。终端产品有管道、压力容器、型材、化工储罐等。 热塑性直接纱是指适用于热塑性树脂，如PP，PA等树脂。应用于LFT，片材，双螺杆及GMT工艺等。
Alkali-free glass fiber direct roving (hereinafter referred to as "direct roving") is directly drawn through spinnerets.
Depending on the resin's compatibility with the sizing agent, direct roving falls into thermosetting direct roving and thermoplastic direct roving. Thermosetting direct roving is designed for use with thermosetting resins, such as unsaturated polyester resin (UPR), vinyl ester resin, epoxy resin, and polyurethane resin.
It is applied to filament winding, pultrusion, hand lay-up, and weaving processes. End products include pipelines, pressure vessels, profiles, and chemical storage tanks.
Thermoplastic direct roving is used with thermoplastic resins, such as PP resin, and PA resin. It is applied to LFT molding, sheet molding, double screw molding, and GMT processes.
| 产品代号 | 适用树脂 | 适用工艺 | 产品描述 | 操作 |
| 4305PM | PP | LFT-G、LFT-D | 标准产品，使用工艺性好，毛纱少、分散性好、增强效果好,不含NPE | 下载 |
| 4305N | PP | LFT-G、LFT-D | 硬度适中、毛纱少，适合高速牵引、一孔多纱的工艺，具有优异的转换性，增强效果好。 | 下载 |
| 4305S | PP | 片材 | PP片材用纱，分散性好。 | 下载 |
| 4303 | PBT | LFT-G、LFT-D | 用于UD-GMT,抽出性好、转换性好，具有优异的织造工艺性。 | 下载 |
| 4305D | PP | LFT-D | LFT-D专用纱，毛纱少，集束性适中。 | 下载 |
| 4301R | PA | LFT-G | 增强PA、具有优异的力学性能和耐冷冻液性能，制品颜色白，同时可作织物用纱。 | 下载 |
| 4300A | PA/PP | 双螺杆 | 通用热塑长纤 | 下载 |
| 4301H | PA | LFT-G | PA专用LFT-G改性熱塑直接纱 | 下载 |
| Product Code | Resin Compatibility | Compostie Manufacturing Process | Product Features | Data sheet |
| 4305PM | PP | LFT-G、LFT-D | Standard product, Direct roving for LFT&LFT-D, Well manufacturing process, low fuzz, good dispersion, effective reinforcement，free from NPE | Download |
| 4305N | PP | LFT-G、LFT-D | Moderate hardness, low fuzz, more suitable for high speed traction and the technology of each hole through more rovings; excellent conversion, effective reinforcement; | Download |
| 4305S | PP | 片材 | Sheet for PP， good dispersion, effective reinforcement | Download |
| 4303 | PBT | LFT-G、LFT-D | Standard product for LFT-PBT\PET, Surface treated by special sizing;Good use of technology;Perfect mechanical properties;Good compatibility with resin ,NPE free | Download |
| 4305D | PP | LFT-D | Formed by white color, boron and fluorine free glass. Compatible well with PP resin. Compared with traditional fiber for PP, excellent strand integrity and dispersion, compatible well with resin,good abrasion resistance, good use of technology, | Download |
| 4301R | PA | LFT-G | For PA fabrics, meet requirements for fabrics processing and mechanical properties. ;Good dispersion,Low fuzz .NPE free. | Download |
| 4300A | PA、PP、PBT、PC、ABSAS | Double screw extruder | Multifunctional direct roving, suitable for double screw extruder processing;Adopting special designed silane coupling agent , compatible well with kinds of resins. Excellent mechanical properties. NPE free. | Download |
| 4301H | PA | LFT-G | Direct roving for PA, Excellent mechanical properties and glycol resistance, white color of the pellets | Download |
| 5301HP | PA、PP、PBT、PC | Double screw extruder | Multifunctional direct roving, suitable for double screw extruder processing; Excellent glycol resistance； Excellent glycol resistance； Excellent mechanical properties | Download |