定义：无捻粗纱是玻璃钢基材的最基本形式，由多股平行的原丝拼合而成的粗纱（多股原丝无捻粗纱）或由一次拉制的多根单丝直接集束而成的粗纱(单股无捻粗纱).不同的无捻粗纱通过喷射、模压成型、缠绕等方式与聚酯或环氧树脂结合，形成高强度的玻璃刚制品。

Twistless roving is the fundamental mode of FGR.The twistless strand(Multi-fiber twistless roving) is pieced together from multiple parallel strand or from rhe multi-cluster strand which is put together directly by roving.The different kind of roving can be combined with polyester and epoxy through injection,molding,winding and so on,toform the FRP which has the FRP which has the high-strength.

1.拉挤纱Pultrusion roving

特征：

硅烷型浸润剂处理
具有良好的耐磨性，毛丝少
纤维线密度稳定，具有高的单丝强度
可赋予复合材料高的物理化学性能、电气（绝缘）性能

Features：
good tensile force and excellent integrity
have excellent filament endurable for abrading and low fuzz
filament density steady, great filament tensile force
easy wet out and impregnating and compatible with unsaturated polyester resin.

应用：

广泛应用于帐篷竿、玻璃钢门窗等产品。

Application: