Preparation method of composite fibre formed from glass fibre and polypropylene fibre

The present invention relates to a production method of composite fibre formed from glass fibre and polypropylene fibre. Said method adopts high-temp. heat-setting process of stretched polypropylene fibre so as to greatly reduce shrinkability of polypropylene fibre. The adoption of modified polypropylene raw material can make glass fibre and polypropylene fibre interface obtain effective combination. In the composition fibre produced by said invented method additive quantity of glass fibre is large, its distribution is uniform and strength is high.