A kind of production method of pre-spinning colored FDY for the production of car roof

Abstract

The invention discloses a production method for a pre-spinning dyed FDY used for a car roof. The method includes the following steps that (1), PET slices are crystallized in advance and dried, and color master batches are dried; (2), the PET slices and the color master batches are metered in a volumetric metering mode, and the rotation speed ratio of a metering disc of the color master batches to a metering disc of the slices is 1: 32; (3), a spinning technology is implemented; (4), cross air blowing is performed for cooling; (5), oiling, pre-interlacing, drawing, shaping, main interlacing and winding are performed. The pre-spinning dyed FDY used for 55dt / 24f warp knitting and a raw white polyester yarn are knitted in a mixed mode according to a certain pattern, an obvious different-color effect of fabric is achieved through follow-up piece dyeing, the third dimension is prominent, and the beauty of the fabric is improved. The color master batches high in color fastness are added into the FDY, accurate metering is achieved, before spinning, fiber dyeing is already finished, almost no batch difference exists in the batch of yarns, in the production process, no waste water, waste gas and waste residues are generated, and the FDY is environmentally friendly and high in light fastness.

Description

technical field [0001] The invention relates to the field of fiber production technology, in particular to a production method for pre-spinning colored FDY used for producing vehicle ceilings. Background technique [0002] The 55dt / 24f warp knitting coloring FDY produced by this patent is mainly used for the roof of passenger cars, and warp knitted plain fabrics are generally used for the roofs of medium and high-end passenger cars. In order to pursue the beauty and comfort of fabrics, designers of automotive decorative fabrics generally use two-color or multi-color fibers when designing automotive roof fabrics to enhance the three-dimensional effect of the fabrics and attract consumers. Warp-knitted fabrics require far more raw materials than woven fabrics, which makes pre-spun colored FDY unable to be used in warp-knitted fabrics in batches. At present, major warp-knitted fabric manufacturers in China usually use high-quality natural white polyester yarn produced by large...

AI Technical Summary

Problems solved by technology

Warp-knitted fabrics require far more raw materials than woven fabrics, making pre-spinning colored FDY unable to be used in batches for warp-knitted fabrics

At present, major warp knitted fabric manufacturers in China usually use high-quality natural white polyester yarn produced by large domestic factories as raw materials, and use piece dyeing after weaving. However, such plain fabrics have a single color and are increasingly unable to be loved by many consumers.