是一种闭模低压成型的方法。其原理是，先将玻璃纤维增强材料（例如短切毡、织物等）置于上下模之间，合模并将模具夹紧，在压力或真空作用下注射树脂，浸润纤维，树脂固化后脱模。

工艺有良好的表面质量、高尺寸精度的复杂部件，在大型结构部件的制造中表现出明显的优势，在各个领域中得到了越来越多的应用。

相关产品：短切毡 机织物 缝边毡

RTM is closed-mould low-pressure moulding. The principle is that the fiberglass reinforced materials （such as chopped mat and woven fabric shall be put between the upper and lower moulds at first, and then moulds shall be closed and fitted together. Under the pressure or vacuum effect, resin shall be infused to impregnate the fiber and demoulding shall be processed after the resin is cured.

Possessing some complex parts with excellent surface quality and high-dimension accuracy, RTM process shows obvious advantage in the manufacturing of large-sized components and is widely used in various fields.

Related products: chopped mat, woven fabric and stitched mat