CN1018369B - Method for producing composite yarn of raw silk - Google Patents

Abstract

To raise bundling of cocoon and core yarn, to improve uniformity and to obtain smooth yarn by bundling cocoon yarn around core yarn comprising yarn except cocoon yarn, winding the bundled yarn at high speed and drying the yarn from the periphery of a small frame with hot air. Cocoon yarn 22 is bundled around core yarn 16 comprising yarn except cocoon yarn, wound through a kennel 3 on a small frame 11 at >=330m/minute and provided with >=17g/20d reeling yarn tension. The wound yarn is dried by hot air at >=50 deg.C form drying pipes 12 and fans 13 attached to the upper, the side and the lower parts of the small frame 11.

Description

Method for producing composite yarn of raw silk

The present invention relates to manufacture method with the compound and symphysis silk of silk boundling around the core silk that constitutes by non-silk.

The silk reeling method that generally is called compound obvolvent method was arranged in the past, it is the fiber tube of giving that core silk usefulness is set below the revolution end feeding wing of automatic silk reeling machine, to insert the revolution end feeding wing by the core silk that core screw tap shape bobbin is drawn, with the core silk is the center, and the silk twisting cohesion that will put on from a thread cocoon is drawn with this state around the core silk, with after twist with the fingers sheath, after the fiber number perception, give to oil, be wound on little

On.

State according to the resultant compound obvolvent silk 50 of this method, though silk 52 coats core silk 51 gallantly and gets final product, but core silk 51 is non-silk occasion, and is in fact bonding easily because of silk gum between the silk 52, in silk 52 and the core silk 51 only a part be bonding with because of silk gum.Therefore, silk 51 and core silk 52 are easily separated, in addition, and can not be bonding enduringly between the silk in very long zone.Thereby, especially when carrying out rereeling, arch often takes place peel off.

Therefore, in order to obtain twining good compound silk more, developed compound deinterleaving method:, silk is interweaved around the core silk that is made of non-silk by being provided with the air nozzle that adds thread device core pipe top than above-mentioned compound obvolvent method.

The compound interlacing wire 60 that obtains like this is wound on little after oiling by twisting with the fingers sheath, denierer

On.

The compound interlacing wire 60 that obtains by compound deinterleaving method filature, the winding of 62 pairs of core silks 61 of its silk is good, and when the core silk was stretched, silk 62 was reeled, therefore compound interlacing wire 60 has extensibility, uses this knitted fabric to have good retractility, adaptability., its demifacet silk 62 separates easily with other fiber 61, particularly little

After the last drying,,, be easy to generate arch because the difference of both percent thermal shrinkages is therefore easily separated if when carrying out rereeling

, silk 62 takes place easily separate, and slickness is poor with core silk 61.

In view of the premises, the objective of the invention is to, it is not easily separated between the silk around the core silk to obtain non-cocoon fibre core silk and circumvolution, and can not send out arch Compound and symphysis silk.

The present invention makes the silk boundling around the core silk that is made of non-silk, is wound on little through twisting with the fingers sheath

On silk reeling method in, divide high-speed winding by filature speed with 330m/ branch～400m/, make reeling tension reach for 17 gram/20 dawn of/20 dawn～25 grams, by from little Blowing 50 ℃～80 ℃ hot blasts on every side makes little

Drying improves the boundling of silk and core silk, make and closing property good.

About silk reeling method of the present invention, the accompanying drawing of the device of this method is implemented in reference, makes the following instructions.

Fig. 1 is a side view of implementing the device of the inventive method, and Fig. 2 is the front view of the silk that obtains according to the inventive method, and Fig. 3 is the front view of compound obvolvent silk, and Fig. 4 is the front view of compound interlacing wire.

In graphic display unit, comprise the end feeding wing 2 that is positioned at filature portion 1 top, pendulum wall 8, cross winding device 9, the finish roll 10 of drum 7 are housed for drum 4, denierer 5, drum 6, the end of drawing into crosisure 3; Be provided with little at topmost

11, little

Drying tube 12 and fan 13 are housed around 11,, hot blast are blowed to little by fan 13 revolutions

11, make be wound on little

Strand drying on 11.Be provided with cover 14 around the drying tube 12.When silk breaks down, when thread tension increased, its end was just lifted in above-mentioned swing arm 8, by mechanism (not diagram), stopped little

11 revolutions, instantaneous in order to change at thread tension, can make little Stop, preventing the strand broken end, will add long arm swing 8, and alleviate base material matter.Moving in 15 circulations of the front of filature portion 1 cocoon supplier, on the end feeding wing 1, adding thread.The core silk 16 that is made of non-cocoon fiber is supported on the frame 18 with cheese 17 forms, by wire leading pipe 19, is drawn towards the center of fixed grain several 20 from the below of the end feeding wing 2.

The cooked cocoon 21 of cocoon supplier 15 is added thread time the end feeding wing 2, enters filature portion 1, with suitable cocoon number, be preferably 4～5 cocoons and carry out filature.The core silk 16 that is wound on the non-cocoon fiber formation on pagoda tube or the bobbin 17 on the one hand is by wire leading pipe 19, enter the center of fixed grain several 20 by the end feeding wing 2 belows, send with silk 22, silk 22 claddings are around core silk 16, coat on one side, as the compound silk at 20 dawn with filature speed be high-speed wind-up that 330m/ branch～400m/ divide on one side.At this moment reeling tension is 17 grams/20 dawn～25/20 dawn of gram.

If filature speed surpasses the 400m/ branch, the end feeding number of times has suddenly and increases so, can cause that like this strand is irregular, and the percentage elongation and the intensity of silk also have remarkable reduction.Therefore, the upper limit of this filature speed is the 400m/ branch.When producing compound and symphysis silk, high reeling tension is a necessary condition, and, when reeling tension restrained for/20 dawn above 25, the percentage elongation and the intensity of the compound and symphysis silk that makes can reduce suddenly.

Because above-mentioned high speed filature, when adding thread to the end feeding wing 2 from cocoon supplier 15, to the next time interval of adding thread shorten to 2 second degree, it is irregular to prevent strand.

Little by being located at The drying tube 12 of top, sidepiece, bottom and fan 13, with 50 ℃～80 ℃ hot blasts blow to be wound on little On silk, make its drying.Blow to little

Hot blast why will to surpass 50 ℃ be because filature speed height, if below 50 ℃, so just can not make be wound on behind the reel silk from cocoons little On the silk intensive drying.On the other hand, this hot blast temperature is limited to 80 ℃, because little The surrounding devices relevant with other is in uncovered state.

In the method for the invention, owing to carry out filature with aforesaid high speed, therefore, increased by the silk 25 of filature tension force in filature, reach the state more than 17/20 dawn of gram, between the silk, tightly obvolvent between silk and the core silk becomes and straight shape attitude that closing property is good.Therefore, separating of silk and core silk is difficult for taking place, and prevents the ring of arch Deng the generation of coil, between the adjacent silk mutually with and the state that closes contact with each other, as shown in Figure 2,, fully carry out obvolvent by silk gum, constitute the state and core silk 16 doubling twistings of the long filament 27 of core silk 16 with looping by being combined into banded part 26.

Among the present invention, in the silk reeling process, silk divides high-speed wind-up with 330m/ branch～400m/, and therefore, reeling tension increases.Can not produce rough knot, therefore, silk is very smooth.

Because of filature speed difference, produce big-and-middle in the filature

, little

Information slip is shown in table 1, table 2 li.According to table as can be known, when dividing above high speed filature, big-and-middle with 330m/ , little

Generation can become considerably less.

The present invention makes the silk boundling around the core silk by non-silk, is wound on little through twisting with the fingers sheath

Silk reeling method in; By reeling at a high speed of dividing with filature speed 330m/ branch～400m/, make reeling tension reach 17 grams/20 dawn～25/20 dawn of gram, from

Blowing 50 ℃～80 ℃ hot blast on every side seeks little

Drying, in order to improve the boundling of silk and core silk, make and closing property good, therefore, closely obvolvent between the silk, between silk and core silk becomes the good straight shape attitude of doubling.Thereby silk and core silk are not easily separated, can not produce arch

, can obtain smooth silk.

Claims (1)

1, a kind of autofrettage of compound and symphysis silk makes the silk boundling around the core silk that is made of non-silk, is wound on little through twisting with the fingers sheath

On silk reeling method in, it is characterized in that: divide high-speed winding by filature speed with 330m/ branch～400m/, make reeling tension reach for 17 gram/20 dawn of/20 dawn～25 grams, by from little

The hot blast that blows 50 ℃～80 ℃ on every side makes little

Drying improves the boundling of silk and core silk, make and closing property good.

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