Air-Jet Spinning is produced the method for day silk and silk blending yarn
Technical field
The present invention relates to the novel spinning field in the caused by spinning industrial production, specifically be meant the spinning process of producing day silk and silk blending yarn with Air-Jet Spinning.
Background technology
It silk (Tencel) fiber is a kind of free of contamination artificial fibre (a refined fiber cellulose fiber), and this fiber has cotton comfortableness, the intensity of polyester fiber, the drapability of viscose and the feel as the silk, market prospects optimism.Spun silk has excellent feel, the comfortableness of taking as a kind of protein fibre, but because of the relation of its length and rugosity, can't process with cotton type equipment all the time.At present existing enterprise carries out blending with above-mentioned two fibrids, and still, traditional spinning method makes a day silk not reach yarn texture preferably with the silk blending yarn, and original advantage can not all be showed, and has some defectives.
Summary of the invention
In order to give full play to day the advantage of silk and silk blending yarn, after mixing these two kinds of fibers, with the sky silk and silk blending yarn that the Air-Jet Spinning production method is produced, be made into fabric after, the sensation of existing thin,tough silk hair, the gloss that has again day thread.
The present invention will solve the method that Air-Jet Spinning is produced day silk and silk blending yarn, the technological process of production that is adopted is: raw material spun silk bar, cut into staple fibre earlier, carry out pre-pine with carding willow, back and raw material sky silk fully mix in 1: 0.5 ratio, and the packing compress be No. 1 the bag, No. 2 bags of forming with raw material sky silk are pressed the resultant yarn blending ratio at the blowing-carding machinery top box again, are mixed into card sliver.Through drafting 1, after drafting 2 and drafting 3 operations, be spun into the blended yarn that requires blending ratio by Air-Jet Spinning.Wherein the first, the spun silk bar of buying requires the high-quality 1# thin,tough silk bar of fibre length more than 100mm, adopts the method for shearing, making its average length is the following short fiber of 40mm, when the thin,tough silk short fiber was carried out pre-pine with carding willow, speed should be reduced to below the 10m/min, and the hired roughneck spaced put foot.The second, No. 1 bag with No. 2 bags by the blending ratio of resultant yarn requirement at the blowing-carding machinery top box, the top box mode is that No. 2 No. 1 No. 2 arrangements are carried out, the spacing of two No. 2 parlors is less than 20cm, wraps fiber plug with mixed No. 1 and is tightened in the slit of two No. 2 sky silk bags.The 3rd, blowing platform both sides guarantee continual dewing, and the relative humidity of whole clear comb operation preferably can remain on more than 75%.The 4th, the relational expression of two nozzle exit pressure N1 and N2 is N2=aN1+b in the technological parameter on the Air-Jet Spinning, and wherein a, b are constant, work as a=0.8; During b=0.25, the relation of N1 and N2 is mated most.
Adopt Air-Jet Spinning provided by the present invention to produce the method for day silk and silk blending yarn, its technological process of production is reasonable, the blended yarn structure of producing is good, the fabric that this resultant yarn is made into, the sensation of existing spun silk has day gloss of silk again, air-jet spinning can solve the too soft defective of such raw material again, and the easy fluffing problem of day silk product.
The specific embodiment
Below execute example for an actual measurement provided by the present invention.
Produce Air-Jet Spinning (MJS) blended yarn of 42s days silk 85%/spun silk 15%.
Raw material: 1, day silk 1.25D * 40mm
2, the crush cutting of spun silk 1# thin,tough silk bar becomes the 40mm bulk fibre
Blowing: thin,tough silk: carding willow is pine in advance, breaks into bag No. 1 with tencel fiber mixing (ratio 1: 0.5) again,
Wrap common top box No. 2 with the sky silk, the top box mode is that No. 2 No. 1 No. 2 arrangements are carried out as follows.
Two groups of No. 2 inter-packet gaps are apart from not placing bag in the interval No. 1 greater than 20cm
Blended fiber becomes card sliver-drafting 1-drafting 2-drafting 3-Air-Jet Spinning (MJS)-resultant yarn.
The promotion technological parameter :/5 meters of end and weight 11 grams, total draft about 170 times, nozzle exit pressure N1=0.25; The mpa of N2=0.45 unit.
The attention problem: blowing platform both sides guarantee continual dewing, and the relative humidity of whole clear comb operation preferably can remain on more than 75%.