Summary of the invention
The purpose of this invention is to provide a kind of ultrafine hetero composite elastic fibre and manufacture method thereof.Specifically a kind ofly make the fiber that has super special thin, different contraction, different cross section performance simultaneously, and the manufacture method of this fiber by spinning is disposable.Wherein, super special thin performance is meant that the fineness of this fiber was 0.01~0.001 dawn; Different shrinkage is meant and contains the different material of shrinkage factor more than 2 kinds in the same fiber that its different shrinkage factor is higher than 20%; It is non-circular that different cross section is meant that the fibre section is shaped as.
Technical scheme:
1, ultrafine hetero composite elastic fibre
Ultrafine hetero composite elastic fibre is to utilize special device for spinning, spinning technique and the correlation technique spinning solution to high-contraction polyester, the multiple raw material preparation of normal polyester, (COPET) carries out the multicomponent composite spinning with water-soluble polyester, adds bullet then and makes.The monofilament of finished fiber is the island shape and distributes, and through the processing of road, back, the fineness that makes fiber is at 0.01~0.001 dawn.
Ultrafine hetero composite elastic fibre of the present invention reaches super special thin method: the monofilament of finished fiber is the island shape and distributes, and through the molten COPET that goes of road, back processing, the fineness that makes superfine fibre is at 0.01~0.001 dawn.
The method that ultrafine hetero composite elastic fibre of the present invention reaches different in nature performance is: contain the different material of shrinkage factor more than 2 kinds in the same fiber, its different shrinkage factor is higher than 20%.Because the performance difference of different component in the fiber makes fiber produce different contractions at length direction, thereby reaches different contraction.
The method that ultrafine hetero composite elastic fibre of the present invention reaches different cross section performance is: being designed to of the spinneret orifice shape of spinnerets is non-circular, makes fiber form different cross section.
2, the manufacture method of above-mentioned ultrafine hetero composite elastic fibre
Select base stocks such as routine, high-contraction polyester, COPET for use.Because physics, the chemical property of various raw materials are different, role has nothing in common with each other in fiber, so each material rate relation is very important; When various raw materials carried out spinning in same casing, the stability (as melting point, viscosity) of various raw material physics, chemistry had considerable influence to yarn quality; According to property of raw material, to the solution distribution circuit of spinning manifold and the parts design of heating, viscosity configuration when making the each component melt enter spinning pack by pipeline is coordinated, utilize the mechanism of hot-air and fiber surface friction, adopt the hot channel stretching method to produce the POY silk, winding part adopts damper, and vibrations are reduced to minimum.Ultrafine hetero composite elastic fibre should make melt both have good rheological when making, and has minimum thermal degradation performance again, makes strand be subjected to minimum damage and the performance quality of carrying out smoothly of guaranteeing to process and product.
Normal polyester section after 25 hours dryings of 110~130 ℃, drying, is added flow stabilizing agent, oxidation stabilizers, and 265~280 ℃ of temperature fusions through casting, pelletizing, are made the spinning master batch; The proportional arrangement high-contraction polyester of polyester slice 30%~60%, and drying routinely; The proportional arrangement water-soluble polyester of polyester slice 20%~30% routinely, water-soluble polyester are after 25 hours dryings of 100~110 ℃, drying, and it is standby to add dispersant;
With above-mentioned master batch, high-contraction polyester, water-soluble polyester in screw rod with 280~290 ℃ of respectively fusions, regulate the injection volume of each screw rod by proportioning, three kinds of melting charges are passed through special-shaped island spinnerets together, carry out spinning silk winding with 3000~3500 meters/minute winding speeds, make super special thin different in nature compound POY silk;
Again above-mentioned POY silk is added bullet on high-speed stretch yarn machine, make ultrafine hetero composite elastic DTY fiber;
From the monofilament of above-mentioned polyester DTY,, obtain ultrafine hetero composite elastic fibre with the molten dissolubility polyester that anhydrates of 1%~2% soda bath.
It is triphenyl phosphate that institute adds the stabilizing agent that flows, and its addition is 0.01%~0.05% of a raw material normal polyester section amount;
It is antioxidant 618 that institute adds the oxidation stabilizing agent, and its addition is 0.01%~0.05% of a raw material normal polyester section amount;
The dispersant that adds in the water-soluble polyester is an atoleine, and its addition is 0.05%~0.15% of a raw material normal polyester section amount;
The POY silk adds bullet on the high speed elastic machine technology is: to go up heater temperature and be 190 ℃, time heater temperatures be 170 ℃, owe doubly to be 1.7, the ratio of false twisting friction plate speed and silk speed is that 1.9: 1, the speed of a motor vehicle are 400 meters/minute, a underfeed for-10%, two underfeeds are-7%, the oil tanker rotating speed is that 2 rev/mins, false twister are combined as 1-6-1 and add bullet.
The molten dissolubility polyester process that anhydrates of the monofilament of polyester DTY: from the monofilament of polyester DTY with the molten dissolubility polyester that anhydrates of 1%~2% soda bath, processing time is 15~30 minutes, the fineness that makes superfine fibre is at 0.01~0.001 dawn, and solution concentration has certain influence to fineness.The final ultrafine hetero composite elastic fibre that forms.
The spinning technological process of production of ultrafine hetero composite elastic fibre as shown in drawings.
The compound texturing craft route of ultrafine hetero composite elastic fibre has three kinds: a kind of is the drawing machine machining process route; Another kind is the elasticizer machining process route; The third is a space-variant filament processing process route.These three kinds of process routes have their own characteristics each, but the scope that its product is used is different.The product of drawing machine and elasticizer processing technology is mainly used in garment material, but and elasticizer machining process route excursion than big many of drawing machine machining process route, the face of adaptation is much also wide.The product of space-variant filament processing process route is mainly used in decorative fabric.
Beneficial effect
1, the advantage of ultrafine hetero composite elastic fibre
Three specific characters such as ultrafine hetero composite elastic fibre of the present invention will be super special thin (0.01~0.001 dawn), different contraction (different shrinkage factor 〉=20%), different cross section combine together.
The thin performance of super spy of this fiber can make the fabric of production have the effect of writing (write on fabric with finger, can see vestige), makes that fabric has as the powder, special soft hand feeling, simultaneously, makes the moisture pick-up properties of this fiber product meet or exceed natural fabric; The different shrinkage of this fiber can make fabric extremely plentiful, comfortable and easy to wear, and gas permeability is fabulous; The different cross section performance of this fiber can make the surface of fabric have gloss soft as the silk and good dyeability.
Industries such as that this fiber can be widely used in is woven, knitting, silk weaving are processed super artificial product (emulation skin, suede nap, peach face, senior toy etc.), high-grade clothing, blood filter material, clean-cloth etc.
2, the advantage of ultrafine hetero composite elastic fibre manufacture method
This method has the following advantages: according to property of raw material, preparation composite spinning liquid adopts the spinning and the texturing craft parameter that are fit to ultrafine hetero composite elastic fibre of the present invention.For example,, cause the difference of a radial drawing stress, molecularly oriented easily, make this species diversity become bigger when particularly winding speed improves because the variation of polymer spinning temperature there are differences the combined fusant apparent viscosity.The inventor is preferred melt temperature, technological parameters such as spinning tension make melt both have good rheological, have minimum thermal degradation performance again, make strand be subjected to minimum damage and the performance quality of carrying out smoothly of guaranteeing to process and product.
The specific embodiment
The manufacturing of embodiment 1 ultrafine hetero composite elastic fibre
With normal polyester section (consumption is in 100%) under 120 ℃ the temperature behind 25 hours drying, add flow stabilizing agent triphenyl phosphate 0.03%, oxidation stabilizers antioxidant 618 again, consumption 0.04%, the spinning master batch is made in fusion under 265 ℃ temperature, casting, pelletizing then.The proportional arrangement high-contraction polyester and the drying of polyester slice 40% routinely.Routinely the water-soluble polyester of polyester slice 20~30% (COPET) under 100 ℃ the temperature behind 25 hours drying, add dispersant liq paraffin 0.1%.
Above-mentioned master batch, high-contraction polyester, COPET are passed through different screw rods respectively, and respectively after fusion under 270 ℃, 280 ℃, 260 ℃ the temperature, regulate the injection volume of each screw rod by proportioning, three kinds of melting charges are passed through special-shaped island spinnerets together, final winding speed with 3000 meters/minute carries out spinning silk winding, makes super special thin different in nature compound POY silk.
Again above-mentioned POY silk is processed on high-speed stretch yarn machine, in high-speed stretch yarn machine, last heater temperature be 190 ℃, time heater temperatures be 170 ℃, owe doubly to be 1.7, the ratio of false twisting friction plate speed and silk speed is 1.9, the speed of a motor vehicle be 400 meters/minute, a underfeed for-10%, two underfeeds for-7%, the oil tanker rotating speed is that 2 rev/mins, false twister are combined as under the situation of 1-6-1 and add bullet, makes ultrafine hetero composite elastic DTY fiber.
With the molten COPET that goes of 1%~2% soda bath, the fineness that makes superfine fibre is at 0.01~0.001 dawn from the monofilament of above-mentioned DTY.Solution concentration has certain influence to the processing time, for example, in the soda bath of 1% concentration, only needs 30 minutes can obtain the superfine fibre that fineness was 0.01 dawn.The final ultrafine hetero composite elastic fibre that forms.