CN1044500C

CN1044500C - Improved Method for Manufacturing Polyester Mixed Filament Yarn with Different Deniers and Different Sections

Info

Publication number: CN1044500C
Application number: CN95116944A
Authority: CN
Inventors: 林振铃
Original assignee: Nan Ya Plastics Corp
Current assignee: Nan Ya Plastics Corp
Priority date: 1995-09-12
Filing date: 1995-09-12
Publication date: 1999-08-04
Anticipated expiration: 2015-09-12
Also published as: CN1129264A

Abstract

The present invention utilizes spinnerets with multiple different cross-sections in the same spinneret and direct stretching equipment to produce polyester mixed fiber yarns with different fineness and cross-sections at a winding speed higher than 3000m/min, that is, direct spinning and stretching equipment is used to directly produce different fineness and different cross-section raw fibers in one step, and the problems of broken fibers and dyed fibers with different fineness and different cross-sections are solved by increasing the spinning temperature, stretching heating time, and appropriately controlling the stretching and winding tensions, and selecting an oil agent with a higher friction coefficient.

Description

Make improving one's methods of filament-blended profiled-section combined filament yarn of polyester

The present invention is the spinning manufacture method of filament-blended profiled-section combined filament yarn, and detailed speech for the relevant spinning nozzle that has different multiple sections in the same spinnerets that utilizes extends the method that volume speed is higher than the Polyester Filament of 3000m/min made from step direct fabrics.

Always, the manufacturing step of filament-blended profiled-section combined filament yarn is all the spinning cake of making different fiber numbers or different section in spinning, doubling is extended (as the special open 61-28036 of Japan when stretching sth. made by twisting again, 61-179333 and 62-268834 etc.) or use the spinnerets of each tool different section fiber number spinning nozzle, elder generation's spinning is made spinning cake and is extended (as the Japanese special clear 62-268834 that discloses) in stretching to twist with the fingers again, its processing procedure as shown in Figure 3, melt and dissolved polyester body with different discharge-amounts in spinneret (1) heating after the spinnerets of single section (1 ') or with certain discharge-amount in spinneret (1) heating after spinnerets (1 ') the ejection tow (2) of the spinning nozzle of six kinds of sections of tool, cool off after oil nozzle (4) oils through cooling air, organizine wheel (5) draws to friction pulley (6) again, batch spinning cake (7A with the speed of 1400m/min into different fiber numbers or the different section of iso-fineness, 7B, 7C, 7D).Again through manually shifting on the spinning cake frame of elongator, the cake silk is pulled through heated wheel (8) after depositing, and heating plate (9) and extending after wheel (10) heating extends typing batches and is precursor (11).Its processing procedure is complicated and have low speed not extend thread resting period short (resting period of a specified duration excessively will be caused the variation of spinning cake rerum natura), spinning cake transfer labour expense height, and metachromia easily changes, and shortcoming such as yield poorly.

The purpose of this invention is to provide and utilize the direct fabrics extension device to produce filament-blended profiled-section combined filament yarn to simplify manufacturing step and to avoid the resting period to influence the manufacture method of combined yarn quality.

The inventor develops the production that direct fabrics extend filament-blended profiled-section combined filament yarn, and the result through the test of concentrating on studies is produced works out finally with higher spinning temperature (being higher than 290 ℃), long extension heated time 1.0 * 10 ^-3-2.0 * 10 ^-3Divide and coiling tension less than (0.25*Den) gram, the finish of the coefficient of kinetic friction (F/M μ d) 〉=more than 0.330.Can obtain between good metachromia and monfil maximum degree of stretching poor 〉=40% former spinning cake.

Fig. 1 is the section of spinning nozzle of the present invention.

Fig. 2 is that direct fabrics of the present invention extend processing procedure.

Fig. 3 is that two sections processing procedures are extended in conventional spinning.

Fig. 4 is the cloth cover photo after the fine cloth dyeing and finishing of combined yarn of the present invention.

Filament-blended profiled-section combined filament yarn of the present invention, its spinneret is combined by three kinds of above spinning nozzles of section, and the section configuration of the spinning nozzle that the present invention is spinning jet used is as shown in Figure 1. Such as Fig. 2, the present invention uses the spinneret (2) with different section spinning nozzle more than three kinds, melt and dissolved condensate sprays tow (3) in temperature 290-310 ℃ spinneret (1) heating by spinneret (2), cooling air cooling through cooling air device (4), boundling enters oil nozzle (5), after oiling greater than the finish more than 0.330 with the coefficient of kinetic friction (F/M μ d), tow is pulled into heated wheel (6) with the heating of the temperature of 120 ℃ of 70-, heat time heating time 1.0-2.0 * 10^-3Minute, again after extension thermal finalization wheel (7) extends with 1.30-1.70 extension ratio doubly, tow draws to contact wheel (8) again, to feed rate greater than 1.0%, coiling tension is less than the tension force of (0.25* Den) gram, batch as former spinning cake (9) with the coiling speed that is higher than 3000 m/mins, can obtain to supply the filament-blended profiled-section combined filament yarn that fine thing uses through above direct fabrics extension process, must be not again do not stretch the transfer deep processing of sth. made by twisting process and avoid not extending silk and deposit factor to the impact of quality through above-mentioned, more can improve output because of the raising of rolling up speed.

The main composition key element of the combination of monofilaments of combined yarn of the present invention, for the macrofibril more than the monofilament 3 red Buddhist nuns and thin fibril below the 1.5 red Buddhist nuns are lumped together and section configuration tool projecting point, thick fibre and thin fine spinning nozzle section can have 6 kinds, silk like this can get the fine thing of the fluffy sense of dry refreshing soft tool after fibre is made, so it can obtain the monofilament of different fiber numbers and degree of stretching, be that six kinds of spinning nozzle basal areas vary in size, in the same spinneret, the sectional area of single hole more then discharge-amount is larger, also larger at the spinning nozzle initial velocity, under certain coiling speed, spinning drawing is less than (Draft Ratio), and filament number is larger, degree of stretching is higher, the fiber number of anti-then monofilament is less, and degree of stretching is low for improving above-mentioned shortcoming, finishes the present invention through studying intensively.

Monofilament degree of the stretching maximum difference of the combined yarn of applicant's invention is more than 40%, and the degree of stretching of adjacent monofilament difference is below 10%, usually then below 5%.Owing to like this monofilament degree of stretching difference makes that after the fine cloth dyeing and finishing, cloth cover has bulkiness, if the too small then fluffy poor effect of degree of stretching maximum difference between monofilament; It is unfavorable that adjacent monofilament degree of stretching difference is too greatly then produced, easily fracture of wire.

The present invention has multiple different section spinning nozzle on a spinnerets for utilizing, if spinning temperature is crossed and is lower than 290 ℃ and will causes and polymericly flow not goodly, distributes uneven and causes to spue and have some setbacks, and easily fracture of wire can't be produced.

The too low frictional force deficiency that then causes between tow and heated wheel of the coefficient of kinetic friction of finish, and then make the tow slip swing, cause the disrumpent feelings silk that twines of bundle, the dyeability inequality of silk.

The heated wheel heating-up temperature is too high, heat time heating time is oversize, can cause tow too soft and be easy to swing on the heated wheel, cause the phenomenon that tow is disrumpent feelings and metachromia is uneven, and the heated wheel temperature is too low, and heat time heating time is too short, then causes the molecule in prepattern district fully not loose, when extending, will have and extend bottle head (NECK) generation and cause fracture of wire, if use lower extension ratio then to cause the phenomenon of extending the not enough dyeability inequality of orientation.

The Tension Control that over feed rate(OFR) after extending batches is very big for the influence of spinning cake moulding.Coiling tension causes throwing silk and moulding to lift up the angle greater than (0.25*DEN) Ke Shiyi, alleviates difficult.

For solving the above problems, wait and tax one's ingenuity through the applicant, study intensively, according to aforementioned of the present invention create conditions to produce can obtain productivity, the filament-blended profiled-section combined filament yarn that easy zbility is good.

Embodiment:

The shape of use shown in Fig. 1 and table 1 and the spinning nozzle of size (spinning nozzle＜A〉two kinds of each 12 holes of size, spinning nozzle＜B〉two kinds of each 8 holes of size, spinning nozzle＜C〉two kinds of each 4 holes of size) add up to the spinnerets in 48 holes and use the direct fabrics extension device, set 290 ℃-310 ℃ of spinneret temperature, discharge-amount is the 35-50 Grams Per Minute, the heated wheel temperature is 80-110 ℃, extending wheel speed is 4000-4900m/min, coiling speed is 3920-4800m/min, and the filament number of each section and degree of stretching measurement result are as shown in table 2.

Table 1

The spinneret orifice size	A1	A2	B1	B2	C1	C2
The spinneret orifice size	A1	A2	B1	B2	C1	C2	a(mm)	0.08	0.08	0.08	0.08	0.08	0.08
b(mm)	0.20	0.30	0.60	0.80	0.40	0.50	a(mm)	0.08	0.08	0.08	0.08	0.08	0.08
b(mm)	0.20	0.30	0.60	0.80	0.40	0.50	c(mm)	0.40	0.440	0.30	0.30	0.90	1.00
d(mm)			0.08	0.08	0.10	0.10	c(mm)	0.40	0.440	0.30	0.30	0.90	1.00
d(mm)			0.08	0.08	0.10	0.10	H (hole)	12	12	8	8	4	4

Table 2

Combined yarn constitutes the rerum natura of monofilament				The weight % of heavy denier silk	Fine denier filament's weight %	Emax- Emin (％)	The maximum of E1+1-E1 (%)
Combined yarn constitutes the rerum natura of monofilament								The monofilament group	The bar number	Filament number (den)	Monofilament degree of stretching distribution (%)
A2	12	1.0	38.2-58.7					The monofilament group	The bar number	Filament number (den)	Monofilament degree of stretching distribution (%)	13	31.7	57.3	4.8
A2	12	1.0	38.2-58.7	A1	12	1.2	58.8-67.7
B2	8	1.7	69.4-73.0	A1	12	1.2	58.8-67.7
B2	8	1.7	69.4-73.0	B1	8	2.0	76.3-81.0
C2	4	2.4	81.4-87.1	B1	8	2.0	76.3-81.0
C2	4	2.4	81.4-87.1	C1	4	3.2	89.6-95.5

Emax: the degree of stretching (%) of maximum degree of stretching monofilament in the combined yarn

Emin: the degree of stretching (%) of minimum degree of stretching monofilament in the combined yarn

E1: be the degree of stretching (%) of arbitrary monofilament in the combined yarn

E1+1: in the combined yarn with the degree of stretching (%) of the nearest monofilament of E degree of stretching

According to the fine filament-blended profiled-section combined filament yarn that extends of Direct Spinning that the present invention produces, can directly supply fine thing and use, spinning cake must not stretched through transfer and use for fine thing after sth. made by twisting is processed as precursor again.

Combined yarn of the present invention, the above percentage by weight of the red Buddhist nun 3 red Buddhist nuns of monofilament is more than 10%, the degree of stretching of adjacent monofilament difference is below 10%, usually then below 5%.Because the difference of degree of stretching between monofilament, the projecting point that makes silk have fluffy sense to add the monofilament section configuration after fine cloth dyeing and finishing makes cloth cover have dry and astringent refrigerant sense.

Claims

1. A method for manufacturing polyester mixed filaments with different deniers and different cross-sections, comprising heating the polyester melt polymer at a spinning head at a temperature of 290°C-310°C, spraying the filaments through a spinneret, and then passing through a cooling air Cooling of the device, cluster oiling, coiling after being extended by a heating wheel, characterized in that the coefficient of dynamic friction (F/Mμd) of the oil used is greater than 0.330, the elongation ratio is 1.30-1.70 times, and the coiling tension is less than (0.25* Den) grams, the coiling speed is higher than 3000 m/min.

2. The method for manufacturing polyester mixed fiber yarn with different fineness and different cross-section as claimed in claim 1, wherein the weight percentage of mixed fiber yarn monofilament denier 3 denier or more is more than 10%, and the weight percentage of monofilament denier 1.5 denier or less The percentage is more than 25%, and the elongation between monofilaments has the following relationship:

Emax-Emin≥40%

E1+1-E1≤10%

Emax is the elongation of the maximum elongation monofilament in the mixed fiber yarn (%)

Emin is the elongation of the minimum elongation monofilament in the mixed fiber yarn (%)

E1 is the elongation (%) of any single filament in the blended filament

E1+1 is the elongation (%) of the monofilament closest to the E1 elongation.