CN1793475A

CN1793475A - Tech. for bobbin dyeing of stretch yarn

Info

Publication number: CN1793475A
Application number: CN 200610048938
Authority: CN
Inventors: 金国周; 金黄锦
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-01-06
Filing date: 2006-01-06
Publication date: 2006-06-28

Abstract

The invention relates to resiliency yarn cone dyeing technique. It includes the following working procedures: loose type coning; pre-processing; dyeing; post processing; dehydrating; drying. Its feature is that it practices once or two times preshrinking forming before loose type coning procedure. This can prevent out layer yarn from covering the inner layer. Compared with the current technique, the invention is simple, economic, and stable; and it can make dye fully permeate into inner, middle, and outer layers yarn to ensure no color difference.

Description

The cone dyeing technology of ELASTANE YARNS

Technical field

The present invention relates to a kind of cone dyeing technology of ELASTANE YARNS, belong to the bleaching and dyeing technique field.

Background technology

" no bullet does not become cloth " is though a bit exaggeration of formulation has illustrated that promptly elastic fabric is more and more wider in the application of field of textiles.At dyeing and finishing industry, the cone dyeing of stretch yarn, pulled down yarn, chemical-fibres filaments and blended yarn thereof (general designation stretch yarn down) is an individual difficult problem that troubles for many years.This mainly is because stretch yarn can be spent phenomenon thereby look occurs owing to higher and irregular shrinkage factor causes the infiltration of the even formation of bobbin density unevenness dye liquor irregular when dyeing.For having dyed stretch yarn, the method that prior art adopts has two kinds, the one, adopts traditional hank dyeing method, this method because of complex process, loss greatly, yield poorly, the cost height, eliminated gradually.The 2nd, adopt pre-contraction of immersion to handle decoration method, promptly comprise: loose type coning operation, pretreatment procedure, dyeing process, postprocessing working procedures, dehydration procedure, baking operation, this method adopt before the loose type coning operation to raw yarn soak, processed, or behind pretreatment procedure, dewater, carry out the winder second time then, yarn is shunk in advance.Because the raw yarn that cotton mill comes out normally closely is wound on the cop on paper bobbin or other the non-dyeing bobbin.On the one hand, paper tube immersion, variable mashed, the distortion in dehydration back, can cause can't winder or unwinding consequence not to the utmost.On the other hand, do not having uniform temperature, simple immersion processing is not reach the pre-contraction effect of ectonexine unanimity, elastic stability, has also increased the wastewater treatment burden simultaneously.And behind pretreatment procedure, dewater and the winder second time, there is the limitation problem, still can for chemical fibre, for the elastomeric yarn that contains cotton fiber as cotton/spandex, cotton/brocade and blending thereof etc., because of cotton fiber hygroscopicity height, must just can carry out the loose type coning second time through baking operation, so both time-consuming, increased cost again.Therefore, numerous enterprises all actively seeking better method, wishes to have breakthrough.

Summary of the invention

The object of the present invention is to provide a kind of simple, economical, and can make dye liquor be penetrated into fully bobbin in, in, outer yarn, make institute dye the cone dyeing technology that the bobbin yarn does not have the ELASTANE YARNS of inside and outside layer of aberration.

For reaching above-mentioned purpose, the technical solution that the present invention takes has following two kinds:

Scheme 1

The cone dyeing technology of ELASTANE YARNS, comprise loose type coning operation, pretreatment procedure, dyeing process, postprocessing working procedures, dehydration procedure, baking operation, it is characterized in that before the loose type coning operation raw yarn is placed on and shrinking typing in the yarn steaming machine in advance and handle, process is as follows: raw yarn is placed vacuum yarn decatize setting machine, vacuumize, be raised to 50～85 ℃ with 1～5 ℃/minute heating rate, decatize 5～10 minutes is carried out pre-setting to yarn.

Scheme 2

The cone dyeing technology of ELASTANE YARNS, comprise the loose type coning operation, pretreatment procedure, dyeing process, postprocessing working procedures, dehydration procedure, baking operation, it is characterized in that before the loose type coning operation raw yarn is placed on and shrinking typing in the yarn steaming machine in advance and handle, process is as follows: raw yarn is placed vacuum yarn decatize setting machine, vacuumize, be raised to 50～85 ℃ with 1～5 ℃/minute heating rate, decatize 5～10 minutes, yarn is carried out the pre-setting first time, vacuumize again, and being raised to 95～110 ℃ with 1～5 ℃/minute heating rate, decatize 20～40 minutes is carried out the typing second time to yarn.

1 pair of elastomeric yarn of above-mentioned scheme carries out a pre-setting to be handled, and 2 pairs of elastomeric yarns of scheme carry out the secondary pre-setting to be handled.Concrete employing scheme 1 or scheme 2 can be determined according to the characteristic and the shrinkage factor of different elastomeric yarns.

The present invention adopts vacuum, indirect, saturated vapor steaming technique, before the loose type coning operation with raw yarn under vacuum condition, low temperature shrinks elastomeric yarn with decatize in the temperature-rise period of high temperature slowly, equably, reaches the pre-contraction typing effect of inner, middle and outer layer unanimity.Can solve the contraction problem of ELASTANE YARNS more than 85%, just not have excessive contraction in each procedure so afterwards, prevent from that outer yarn from compressing the internal layer yarn to cover and cause the disease of sheltering that cheese ectonexine density differs.Make enter dyeing process after, dye liquor can be penetrated into the inner, middle and outer layer yarn fully, the elastic force bobbin yarn after the dyeing does not have the ectonexine aberration.Compared with the prior art the present invention has simple, economy and dyestuff and can fully be penetrated into the inner, middle and outer layer yarn, makes the ELASTANE YARNS after the dyeing can not produce ectonexine aberration and elastic stability, superior quality characteristics.

The specific embodiment

Embodiment 1

To the cone dyeing of 75D polyamide fibre false-twist textured yarn, step is as follows:

1) pre-setting: raw yarn is put into vacuum yarn decatize setting machine, vacuumize, the air in the yarn steaming machine and yarn space is taken away, make the negative pressure that reaches 150mbar in the machine, the water of tank rises to 85 ℃ with 4 ℃/minute heating rate in the heater then, make its low temperature produce saturated vapor, yarn is carried out pre-setting, 25 minutes time.

2) loose type coning: through the polyamide fibre false-twist textured yarn of pre-setting, elastic stability, becoming by common bobbin winder network heavily is 1000g, density 0.36g/cm ³Cheese.

3) traditional routinely technology is carried out pre-treatment, dyeing, post processing, dehydration and oven dry successively, and each procedure parameter of this example is as follows:

Pre-treatment: the clever 2g/l that deoils, scouring agent 1g/l, 75 ℃ of temperature, 20 minutes time.

Dyeing: neutral yellow 1.5%, PH antiseize paste 0.5g/l (pH value 5～6), polyamide fibre levelling agent 1g/l; bath raio 1: 10 adds dying material at normal temperature, is raised to 10 fens kinds of 80 ℃ of insulations with 0.7 ℃ of/minute heating rate; be raised to 100 ℃ of insulations 40 minutes with 1 ℃/minute speed again, discharge opeing is cleaned.

Post processing: fixation, softness: color-fixing agent 3%, pH value 5～6 (regulating), 70 ℃ of temperature, 30 minutes time, softener 2%, 40 ℃ of temperature, 15 minutes time with acetic acid.

Dehydration, oven dry is handled.

The high-elastic bobbin silk of the golden yellow polyamide fibre color even, the quality better that obtain as stated above.

Embodiment 2

To the cone dyeing of 32S cotton+20D spandex bag stamen yarn, step is as follows:

1) pre-setting: the 32S cotton+20D spandex bag stamen yarn that will closely be wound on the paper bobbin places vacuum yarn decatize setting machine to carry out pre-setting, vacuumize for the first time, be raised to 65 ℃ with 5 ℃/minute programming rates, decatize 5 minutes, vacuumize for the second time, be raised to 105 ℃ with 3 ℃ of/minute programming rates, decatize 30 minutes.

2) loose type coning: the cotton/spandex bag stamen paper tube yarn through pre-setting, be wound on the dyeing bobbin by common bobbin winder, density is controlled at 0.3g/cm ³

3) traditional handicraft is carried out pre-treatment, dyeing, post processing, dehydration and oven dry successively routinely, and each road parameter of this example is as follows:

Pre-treatment: scouring enzyme 1g/l, pH value: 8 (soda ash adjustings), 55 ℃ of temperature, 40 minutes time.Dyeing: reactive black 5 %, chelated dispersants 1g/l, glauber salt 80g/l, soda ash 25g/l; bath raio: 1: 10; dyestuff, glauber salt, chelated dispersants and 2g/l soda ash are added together dyed 30 minutes at normal temperatures, were raised to 60 ℃ with 1 ℃/minute speed; after dying 10 minutes; utilization adds alkali equipment automatically and added soda ash by 50% step rate in 45 minutes, continuous dying 50 minutes, discharge opeing is cleaned.

Post processing: soap: soaping agent 1.5g/l, 98 ℃ of temperature, 10 minutes time; Fixation: color-fixing agent 2g/l, 40 ℃ of temperature, 20 minutes time; Soft: softener 3g/l, 30 ℃ of temperature, 15 minutes time.

Dehydration, oven dry are handled.

The black cotton of being dyed as stated above/spandex bag stamen yarn product are of fine quality, and do not have the ectonexine aberration.

Claims

1. the cone dyeing technology of ELASTANE YARNS, comprise loose type coning operation, pretreatment procedure, dyeing process, postprocessing working procedures, dehydration procedure, baking operation, it is characterized in that before the loose type coning operation raw yarn is placed on and shrinking typing in the yarn steaming machine in advance and handle, process is as follows: raw yarn is placed vacuum yarn decatize setting machine, vacuumize, be raised to 50～85 ℃ with 1～5 ℃/minute heating rate, decatize 5～10 minutes is carried out pre-setting to yarn.

2. the cone dyeing technology of ELASTANE YARNS, comprise the loose type coning operation, pretreatment procedure, dyeing process, postprocessing working procedures, dehydration procedure, baking operation, it is characterized in that before the loose type coning operation raw yarn is placed on and shrinking typing in the yarn steaming machine in advance and handle, process is as follows: raw yarn is placed vacuum yarn decatize setting machine, vacuumize, be raised to 50～85 ℃ with 1～5 ℃/minute heating rate, decatize 5～10 minutes, yarn is carried out the pre-setting first time, vacuumize again, and being raised to 95～110 ℃ with 1～5 ℃/minute heating rate, decatize 20～40 minutes is carried out the typing second time to yarn.