TW200424376A - Polyester conjugated yarn with high self-crimping properties and method of producing the same - Google Patents

Abstract

Disclosed is a polyester conjugated yarn, including two types of polymers with a large intrinsic viscosity difference subjected to bi-component spinning so as to be longitudinally arranged in a side-by-side sectional structure, in which the two types of polymers are polyethyleneterephthalate with intrinsic viscosity of 0.45-0.65 as a first polymer and polytrimethyleneterephthalate with intrinsic viscosity of 0.90-1.10 as a second polymer. The polyester conjugated yarn is advantageous in terms of superior spinnability and high uniformity index. In addition, the polyester conjugated yarn can exhibit high self-crimping properties through relaxation-heat treatment of the dyeing and finishing process, and as well, can be applied to fabricate woven/knit fabrics with softness to the touch, beautiful colors, and high drapery and bulk properties, due to inherent characteristics of polytrimentyleneterephthalate.

Description

200424376 发明 'Description of the invention: [Technical field to which the invention belongs] The present invention relates to a polyester composite yarn, in particular, a composite spinning method using two different polymers to produce side-by-side cross-sections in the warp direction. Structure of composite spinning and its manufacturing method. [Prior art] Generally, the conventional juxtaposed composite yarns are formed by combining two types of polyester yarns with self-crimping characteristics, so the heat treatment in the dyeing relaxation process and the final process will show a spiral curl tendency. It is like a bimetal composed of metals with different expansion rates. . Until now, methods for making composite yarns with self-crimping properties have been made by, for example, leaking mono-polymers by changing the non-air quenching rate, or by weaving two types of polymer: Fine, monolithic—polymers are quenched to produce crimped fabrics, and crimping is the way in which the two Suns and Weis are combined. And the single polymer needs to cut the workshop equipment. The method of mixing the polymer and the double compound spinning is more widely accepted. This is the way to choose the polymer of Lang. -之 _ 第-二 Shrinkage characteristics. For example ―Day ::: 第: and these two same materials have different shrinkage characteristics. However, the use of heteromolecular and polyacetate materials, such as heteromolecular polymers, has a high degree of flexibility and results in poor textile properties. Poly: Material ::: Main: Produced by itself with poor physical specific polymers and more , The use of heterogeneous heterogeneous phase leads to a non-commanded version from the spinned polyacetate composite material of _ butterfly to make many spinning methods that use two different stages of different shrinkage characteristics of the process, but It must be passed through, for example, spinning of 200424376 silk at a low speed (1_instrument / _), or at a higher speed (25m / min or more), followed by one at a time. -The guide wire lying and drawing machine performs wire drawing, weaving and heat setting to ⑽He, and the same polymer is subjected to a dry or wet heat treatment in a dyeing process and a relaxation heat treatment to form a curl. "Therefore, The present invention is directed at the above-mentioned problems, and proposes a polyacetate composite yarn with high self-crimping characteristics and a method for manufacturing the same. Or stiff phenomenon And further developed the use-two special spinnerets that can be used to use two kinds of polyester with different viscosities for spinning to solve the conventional shortcomings, moreover, in order to make the intrinsic viscosity to the maximum difference limit, Form a satisfactory "composite yarn with high self-curling and round cross-section, and then can form a large number of different excellent braids ==: ==: can coffee privately discussed bile spinnability [Content of the Invention] The object of the present invention, In the miscellaneous supply, the polyester composite yarn that is highly self-curling and presents a satisfactory surface condition is formed in a straight line. The "sentence ^" is to provide a method for the production of polysilicon composite yarn in the existing structure. It can form a large number of different excellent air-knitted products, and the self-made, polymer-brewed compound hybrid has a high spinnability and impurity. In order to achieve the above purpose, the present invention is to provide a method for manufacturing a polyacetate composite yarn. The method includes the following steps: selecting two polymers with highly different intrinsic viscosity, and using a tapered round shape to reduce the Lai-type structure, and the fresh compounds can be intrinsic viscosity. 0.045 ~ G.65 Poly terephthalate is used as the first polymer, and it is inherently viscous! 0.90 1.10-1 propylene glycol dibenzate is used as the second polymer. _ Here the cross section of the polyS purpose composite yarn meets the following Equation) and Equation 2: Equation 1: β (Interface scale = length of rows and columns CD + length of rows and columns ab) Zhao, 6 7 3 / ()-· ·., $ Form 2 · ^ (shape ratio = length of rows and columns EF + rank Length GH) $ ΐ · 4 eight ~] length Α · length of the long axis at the interface between the polymer and the more robust polymer; length J of the CD · located at the higher viscosity polymer and lower The length of the major axis at the interface between the viscosity polymers / 2; the length of the rows and columns EF: the maximum length of the major axis of the spinning section; the length of the row 歹 J; the maximum length of the minor axis of the spinning section. This paper discloses a kind of composite polyg yarn, which includes two kinds of composite yarns with side-by-side structure formed by spinning two polymers with high intrinsic viscosity difference. The two polymers are essentially 1 f 〇 · Polyethylene terephthalate of 65 is intended as a first polymer, and polytrimethylene terephthalate with an intrinsic viscosity of 0 to UG as a second polymer. «• Hose has —columns, rolls at 2G% __ and —circular cross-sections that satisfy equations and equations:, square private type 1 · 0 $ (interface ratio = length of rows and columns ⑶ + length of rows and columns AB) 』Square private type 2 · B (shape ratio = length of rows and columns EF + length of rows and columns GH) $ 1.4 /, length of middle rows and columns AB: the length of the long axis at the interface between the polymer with higher viscosity and polymer with lower viscosity; The length of the rows CD • The length of the major axis at the interface between the souther viscosity polymer and the more robust polymer / 2; the length of the rows and columns EF: the maximum length of the major axis of the spinning section; the length of the rows and columns GH: spinning The maximum length of the minor axis of the face. 200424376 In order to make your review members have a better understanding and understanding of the structural features and effects of the present invention, the implementation of the Department will be implemented _ and cooperate with the detailed mosquito system, as explained later. Two kinds of double characters ra and PTT are used as the second polymer. The above: ¾ The essential viscosity difference is therefore easier to be preferred. In addition, the main availability of this anger = the rigidity of the negative impact of mass production. As shown in the figure, the present invention proposes a method for spraying π ^ ^ poor / in the first picture, and ensuring that there is nothing Affects spinnability issues. % Of the first polymer with higher fluidity is applied to the inclined surface A ′ and the surface having the lower intrinsic viscosity and higher fluidity is applied to the surface of the inclined circular spinner B. Such as a shaped spinneret, two polymers with different intrinsic viscosities can be used: the polymer produced will not be bent. The difference in melting viscosity between these two polymers is not less than the difference, which assists the spinning process. However, if the viscosity is poor, the polymer with high viscosity will cause severe bending problems. The difference in prepared melt viscosity is less than 1500, which will cause the orientation to be fortunate; --- A bends, which will reduce the spinnability. ~ There is a car on the surface. PET as the first polymer is terephthalic acid and ethylene glycol as the second constituent molecular monomer. It contains terephthalic acid and a knife. The polymer extruder 1 and 1-1 in ^ can be changed by changing the hysteresis of the polymer. The process temperature can be changed. The textile temperature of the polymer with higher viscosity or lower viscosity In order to achieve the melting viscosity of the two polymers, only 1500-2500 is maintained during weaving, and the temperature of the weaving depends on 265-29 (TC. Sex 1 is in the temperature range of 25-20-27. PET extrusion & η around 250-270 ° C. The molten polymer passing through the extruder was put into the spinneret assembly 3 through 20042004376. ° s: s; 2 ss

Sii has the difference in melting viscosity of iSS diatoms: 1. The shape of the interface in the perimeter can be changed by changing the spear G- (Interface Proportion-Length of Rows and Columns 0) + Length of Rows and Columns · Rank Α · Length of the long axis at the interface between the souther viscosity polymer and the lower viscosity polymer; rank / 2 CD: The length of the long axis at the interface between the higher viscosity polymer and the lower viscosity polymer The long PTT. Ί Biluo ί face shape can meet the following sister ^ Program 2 where $ (shape ratio = length of rows and columns EF + length of rows and columns GH) $ 1.4 length of rows and columns EF: the maximum length of the long axis of the spinning section ; Length of rows and columns GH: the maximum length of the minor axis of the spinning cross section. («I / min: The rotation speed is set to be greater than or equal to 2_ godet roller 4 J to _ m / min, so as to increase the spinnability ^^ greater than will make the spinning rollers 4 and 5 pass through the godet roller. In 1t, if the wire drawing temperature is too high-the better temperature of the godet 4 is poor, except for =, 裎 ". Therefore, the temperature is too low: the stability of the wire will become healthy. ㈣Second godet rollers will show many defects when they are dyed or post-processed. ^ Secondary buckle will form a knitted fabric 4 when passing through the godet roller 5 and the temperature will be extremely high. f 〇, 5 nm 200424376 The multifilament of the present invention has a ^ tensile strength of 2.00-3 · 3 g / denier (g / denier), an elongation of 20-40%. The tensile strength of s silk is less than 2. Og / denier, the occurrence of breaks in the spinning process will increase, and the finished product of knitted fabrics will decrease. Finally, the woven fabric 'In addition, when the elongation is less than the duty, resulting in ί wool ball, when the elongation exceeds 40%, the uniformity index decreases (U%) due to the inexhaustible silk 'V present in the textile process. ~ In this hair 1, the composite polymer with' 9 self-curling characteristics The filament is made of poly (ethylene terephthalate) terephthalate as the second polymer, and the self-winding ^ soil is said to have a self-crimping rate greater than 20%. Moreover, the above-mentioned composite yarn has the following formula: Circular cross section, please refer to the fourth and fifth figures. Square red type 1 〇 $ (Interface ratio = length of rows and columns CD + length of rows and columns Aβ) ^ 〇6 Equation 2 where $ (shape ratio = length of rows and columns EF + length of rows and columns GH) length of rows and columns AB: length of major axis; length of rows and columns at interface between chima viscosity polymer and lower viscosity polymer CD: length of major axis / 2; The length of the rows and columns at the interface between the polymer and the lower viscosity polymer EF: the maximum length of the long axis of the spinning cross-section; the length of the rows and columns GH: the maximum length of the short axis of the spinning cross-section. The crimp ratio is not less than 20%, which can be used for the side-by-side composite yarn with a crimp ratio of not less than 20, and the composite yarn with phase S contacting the earth to provide softness and is made into a woven fabric or knitted fabric. The circular section could make clear the case for progress A ' Six specific examples of implementation are provided. Please refer to Table 1 first.

X -U

The utility model relates to an inclined round spinning device for making side-by-side type textiles with the greatest intrinsic viscosity k PPT and PTT. Polymer A is ρΕΤ, which was originally PET of 0.550 and 0.635, while pfT ', which is considered as polymer β, has a value of 0.460, which is shown in the following, and the spinning temperature conditions above For example, Table 1 describes the ratio of bulging ratios. The system described in Table 1 is different. It is made with a tilted circular spinneret. It is made with 23tg of warp warp. The g yarn product will be woven into warp and weft to form a woven fabric. This is at the heart of 120. Guang: Table 1

200424376 Segment 5 PET PTT 275 2800 5: 5 0.35 1.07 Phase One 0.460 LOO Phase 6 PET PTT 290 2100 5: 5 0.37 1.08 Phase One 0.460 1.00 Phase

The characteristics of the woven fabric were measured according to the following steps. The results are summarized in Table II below. -Intrinsic viscosity (I.V ·): Each polymer is decomposed into n-chlorophenol of uot until its concentration is 丨%. Then, the results are measured with a Ubbelohde viscometer at a constant temperature of 30 ° C. -Melting viscosity (M · V.):-The polymer is sufficiently dried in a vacuum oven set at 16 (TC, and then measured by a capillary current generator at 280 ° C.-Curling rate (Te, %): 3000 denier silk samples were placed under a tensile stress of 50 mg / denier, and were treated with hot water (100 C), with a load of 0.5 mg / denier at each sample width, and each sample without As for entanglement, the sample was left standing for 24 hours under a helmet load and allowed to dry naturally. Subsequently, the sample was hung with a weight of mg / denier, and the length was measured as L1 after 1 minute. When completed, the load was again 2 〇〇mg / denier on the sample, and measure the length to obtain L2 after 1 minute. This measurement equation 3 is used to judge the curl degree. The value is introduced into equation 3

Tc (%) = (L2-L1) / L2 X 100 3〇 乂 彳 = gray complex! Power (howling%): three shuttle fabric samples with 5 · 5 × 30 cm after immersion ^ embedded in width 5 The tensile tester in centimeters in order to give a load to the sample was extended to 30% ff in accordance with a slow tensile tester (JIS L 1018-70). The sample clock is then divided at the same rate on the sample at the same rate as the direction opposite to the tensile test. The number (ε) can be calculated from the tensile stress curve graph under the load preload &. Equation 弋 4 is the average on the annual line, and then the following Equation 4 is introduced.乂 and in ^ (%) = (30ε) / 30 X 1〇2004200424376 table, 2 4 No. Textileability ~ '" Strength (mg / denier) -------- Elongation (%) ----- ~ ~ --- Crimping rate (%) -30% Stretch recovery elasticity (%) ◎ 3. 30 23 42 86 ◎ 2.65 29 65 97 ◎ 1 ----- 2. 49 ---------. 35 60 93 ◎ 2. 78 23 —---- 68 95 X ------ 1.90 -----— 35 75 95 tn 1.63 37 ------- 70 97 — ϊϊ * ίΚί? Είίί: ^; ^^ material, its ability to resist tearing is poor. ^, I & wood color and the final process of the woven I description :: cooking a stop in I _____., ... double WV month & knife Han father production 0 ^ ί ί ^ ίί «;: 5ίϊ ; Ϊ́ ΐ 4: The machine uses an inclined round wire feeder with a machine to extrude viscous 0. 990 and ff viscidity 0. 635 PET and has an essential compound B at _temperature U-. 5G% polymer A and 50% polymer silk. 23 ° C to 5-120 male and 8 ΐ: 过 go through a one- or two-stage process to make a compound and use 0.5-1.1 wt% spinning cold air to flow to the nozzle at 0.35 m / sec, and weave it into a woven fabric The silk product of the final result of Yiguang Yi / Yingting will be collected in the meridian and latitude as shown above. Table: ^ 14 200424376 Table III. Polymer A Polymer B Spinning temperature (° C) Viscosity difference (poise) Transmission rate Interface ratio Shape ratio Process 1 PET PET 290 1200 5: 5 0.21 1.04 Two 0.550 0.630 Stage 2 PET PET 285 1800 5: 5 0.30 1.05 two 0.460 0.635 stage 3 PET PTT 280 2100 5: 5 0.25 1.02 two 0.550 0.99 stage 4 PET PET 280 2000 5: 5 0.34 1.03 one 0.460 0.635 -30% Ductility (mg / denier) (%) (%) Resilience 15 200424376 -----. △ ----- ~~~-~ _ 3.84 (%) 30 18 63.5 2 ◎-~~ — 2. 90 -------- 30 35 91.4 3 ◎ 2. 55 25 45 85 4 ◎ — * -— 3 · 01 28 ——---- 20 -———— 74.9 The higher the curlability of j / = 本!; = Yicheng 2 |

j ^ i? rι «ΐτ! ^ Here, ί Benzene as the constitutive molecule of the t phenomenon, and to improve the degree of uniformity ^ Japan composite yarn has a South degree of textile weavability, no deadlock, as described above is only a comparison of the present invention This is only a preferred embodiment and is not intended to limit the invention f

Equivalent changes for the transformation of two rf to ride the slave city, structure, outline and fine science [Simplified illustration of the drawing] Within the scope of the patent of the present invention. The vertical view is a drawing of a spinning machine used in the present invention for manufacturing a self-crimping composite yarn. Fig. 2 is a schematic view of a spinneret for crimping two composite yarns according to the present invention. The third diagram is a conventional spraying diagram for curling two kinds of composite yarns. ^ Figure is a schematic cross-sectional view of a finished polyester composite yarn of the present invention. The fifth figure is a schematic diagram of the cross section 16 200424376 of the rayon composite yarn of the present invention according to the number of scales. [Comparison of drawing numbers] 1 Extruder 1 -1 Extruder 2 Gear pump 2-2 Gear pump 3 Spinneret assembly 4 First godet roller 5 Second godet Qin%

Claims (1)

200424376 Scope of patent application: 1. A method for manufacturing poly-synthetic composite yarns with high self-crimping characteristics, which includes the following steps: k Select two polymers with large intrinsic viscosity differences, and the sides are inclined The circular spinners of the degree come into the lamp to draw de 'to form a parallel domain surface structure, the two polymers are respectively the first polymer as the intrinsic viscosity of poly (ethylene terephthalate) and ㈣ ~ ⑽. As the second polymer, the intrinsic viscosity is ~ i. 1G of polytrimethylene terephthalate, where the polyvinyl silk has a cross section that satisfies Equations 1 and 2: Spear King 1 · 0 $ (Interface ratio = rank Length ⑶ + the length of the rows and columns 6 Ways 2 · 1 $ (shape ratio = the length of the rows and columns EF + the length of the rows and columns ⑻ "", the length of the middle rows and columns AB is located at the interface between the souther viscosity polymer and the more robust polymer The length of the long axis of the upper axis; the length of the line 歹 J; the length of the long axis at the interface between the relatively viscous polymer and the lower viscosity polymer / 2; the length of the line EF: the length of the long axis of the spinning section Maximum length; and the length of rows and columns GH: spinning section The maximum length of the short axis. Method application! The polymer with high self-reversibility described in item 1 above_Manufacture of composite yarns 2'2 The difference in melting viscosity between these two kinds of materials is not greater than ⑽ (p 〇ise). $ Manufacture of the hybrid composite yarn with high self-curling and hiding as described in item 1 of patent F1. Polyethylene terephthalate sl ==! Molecular protons, and the configuration of the polytrimethylene terephthalate as the second polymer == terephthalic acid and propylene glycol, and the first polymer and any one hundredth other functional heteromolecular polymer. Method = The total yarn weight rt of the hybrid composite yarn with high self-winding property described in item ^ i is the first polymer of the polyethylene terephthalate composition. 〇-70% by weight, the polytrimethylene terephthalate as the second polymer The composition accounts for 70-30% by weight of the total weight of the composite polyester yarn. 5 · If you apply for a patent! The method according to the item with a high degree of self-complexity, wherein when the double chemical spinning system is utilized-the stage is day. The rate is at least 2 m / min, and the second __ ^ hour turn-guide wire picking. The catch rate of peaches such as heart beats is at least 4 m / min. Ershen: The polyacetate compounding method with high self-crimping characteristics described in item 丨, wherein the strength of the poly 8-filament yarn is 2_ _ 3.3 g / dan, and the elongation is 2 (m0%.) Shen Yuezhuan The method for manufacturing the hybrid composite yarn with commercial self-rewinding properties described in item 1, wherein the polyester yarn has a curling rate of not less than 20%. ~ W々Li: The materials are poly-terephthalic acid, which is the intrinsic viscosity of the first polymer, 8.- a composite yarn with high self-leakage characteristics, which is composed of two kinds of polymers with different intrinsic viscosity differences. The two-component compound spins in the composition and has a fiber surface structure. The two types of polymerization are 4 ^ 7 Si! &Amp; Ah ^ — alfalfa, _ I " ”. The intrinsic viscosity is ~ 1. Poly (trimethylene terephthalate), where the polyester yarn has a circular cross section that satisfies equations 1 and 2: Private 1 · 〇 $ (Interface ratio = length of rows and columns CD + Length of rows and columns ΑΒ) $ 0. Β Equation 2: (shape ratio = length of rows and columns EF + length of rows and columns GH) S1.4 where 'Length of rows and columns ΑΒ: located higher The length of the major axis at the interface between the polymer with a lower viscosity polymer; the length of the rows and columns CD: the length of the major axis at the interface between the higher viscosity polymer and the lower viscosity polymer / 2; the length of the rows and columns EF ·· Maximum length of the long axis of the spinning section; and length of rows and columns GH: Maximum length of the short axis of the spinning section