Elastic filament and processing method for drum dyeing of elastic yarn

Abstract

The invention relates to a flexible filament and its flexible yarn barrel dye process method, which has the following steps: convoluting the flexible filament or flexible yarn loosely around the slippery paper tube, wrapping them with the netted fabric; pressing the netted plastic tube that the dye barrel yarn used into the paper core, dropping out the wrapped paper tube; rewrapping the exchanged barrel yarn with the plastic tube again and putting them in cross and parallel direction into the flexible yarn swelling, contracting and shaping device, and they receive the first contracting through temperature rising, then the second contracting through the second temperature rising; after the yarn is tightened in the netted plastic tube, caging and dyeing; rising when dyeing to make the yarn contract again; after dyeing, soap washing - water washing - dehydrating - drying-semi - finished product checking - waxing - bobbin-winding - product checking - product casing or weaving.

Description

Technical field: [0001] The invention relates to a processing method for elastic filament and elastic yarn drum dyeing, in particular to a kind of elastic filament or elastic yarn in which the filament or yarn is fully shrunk step by step in the drum dyeing production process to realize Its stretch elasticity and a method of permanent recovery elasticity. Background technique: [0002] Elastic filaments or core-spun elastic yarns have been widely used in the field of textile technology. The traditional production process is generally to embed or incorporate elastic filaments and elastic yarns into fabrics during the weaving or knitting process. Then carry out dyeing process, so that the added elastic filament or elastic yarn shrinks to form elastic fabric. The disadvantages of this production process and production method are: in the weaving process of the fabric, the elastic fiber is bound by the weaving tension and the outsourcing fiber; the influence of the dyeing temper...

AI Technical Summary

Problems solved by technology

The disadvantages of this production process and production method are: in the weaving process of the fabric, the elastic fiber is bound by the weaving tension and the outsourcing fiber; the influence of the dyeing temperature and the drying and setting temperature; the elasticity cannot be fully exerted, and the elasticity uniformity is poor , Poor resilience, poor dyeing saturation, uniformity, same color or no coloring, can only be used on the reverse side of the fabric, once reversed, white bare silk and blemishes will appear on the front of the fabric

With the traditional dyeing of package yarn, due to the strong shrinkage rate of the yarn, the package yarn shrinks tightly and densely, and there are disadvantages such as impermeable dyeing, uneven dyeing, color difference, layer difference, and color flower, even if the winding density is very low. In some cases, if the SSM loose winding machine is used to loosen the cone, it is difficult for the dyed elastic filament or elastic yarn to achieve a suitable shrinkage rate. In severe cases, the yarn loses its elasticity completely.

Dyeing with skein yarn, for filament or high-count core-spun yarn, it is difficult to achieve industrialization due to the reverse twist, difficult winding, serious wool, and large loss and waste of the dyed yarn. Production

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