TWI237670B - Spinning and winding of polyester multifilament yarns using spinning additives and polyester multifilament yarns obtainable by the spinning process - Google Patents

Abstract

The present invention relates to a process for producing and winding partially oriented polyester multifilament yarns not less than 85% by weight based on the total weight of the multifilament yarn polybutylene terephthalate (PBT) and/or polytrimethylene terephthalate (PTMT) that contain between 0.05% by weight and 2.5% by weight based on the total weight of the multifilament yarn of at least one additive polymer extensibility enhancer, which comprises providing a wound yarn package which is stable in long-term storage and insensitive to elevated temperatures during storage and transportation by heat-treating the wound polyester multifilament yarn package at a temperature in the range from >45 DEG C to 65 DEG C. The present invention further relates to the polyester multifilament yarns obtainable by the process and to their use.

Description

1237670

(Technical Field to which the Invention belongs) The present invention relates to containing not less than 85% by weight of polybutylene terephthalate (PBT) and / or polytrimethylene terephthalate (PTMT) (preferably PTMT) The polyester yarn has a spinning drawing and winding method and a method for manufacturing a polyester multifilament. In addition, the present invention also refers to a drawing process of the polyester multifilament (DRAW TEXTURING). The two-stage continuous production method of polyester multifilament, especially polyethylene terephthalate (PET) multifilament, is well known in the world. The first stage includes spinning and winding and the second stage stretches the multifilament. 2. Heat treatment or tensile deformation into bulk multi-filament yarns. The long-term storage of the wrapped multi-package (PACKAGE) between the above two stages and the handling at high temperature will not affect the processing or product quality in the second stage. . F. FOURNE commented on the fundamentals in his 1995 book "Synthetic Fibers" (published by HANSER, Munich). However, PTMT or PBT multi-yarn is different from PET multi-yarn. It is not only after spinning and winding, but also for several hours and days after winding, during storage and handling, especially after storage and handling at high temperature. Quite large shrinkage tendency, therefore, the yarn will be short and the yarn package will shrink. At the worst, the yarn package will harden and cannot be removed from the winding machine. During long-term storage or especially during high temperature handling, The gauze bag also loses its cheese-like shape, forming a saddle shape, that is, the periphery is hard and hollow in the middle. As a result, the silk material will deteriorate, and other problems will occur when the gauze is unwound. These will not occur during PET fiber processing. In general, if you want to prevent it from happening, you have to limit the weight of the gauze to less than two kilograms. 0 Continued pages (Note when the invention description page is not enough, please note and use Gu) 7 1237670 Invention description The continuation page is immediately taken out from the spool, and stored around or at 65 ° C, especially at the polymer glass transition point After transportation to 65 ° C, it can still maintain its original shape. -At high spinning speeds, a higher elongation at break than when no additives are used is obtained, so the higher economic ratio can still be used to obtain the economic benefits of this method in further processing. -The obtained 0-10% POY boiling shrinkage is to ensure high stability during storage, and it will not be reduced above 10% (absolutely) even at temperatures up to 65 ° C, so after winding The yarn package will not deform. -Yarn obtained by tensile deformation processing has a high breaking elongation and a high breaking strength. Now to make a more detailed description of the present invention, sometimes reference is made to the drawings of the accessories: Figure 1 illustrates a device for extracting or winding one or more multi-filament yarns. Figure 2 illustrates a cheese-like yarn package . Figure 3 illustrates a deformed gauze bag, which is characterized by a saddle, with a rigid periphery and a waist-like center. The invention provides a method for producing and winding a polyester multifilament yarn. The polyester yarn must contain at least 85% by weight of polybutylene terephthalate (PBT) and / or polytrimethylene terephthalate (PTMT). Those skilled in the art know PBT and PTMT. Among them, PBT is formed by polycondensation of acid and I, 4 butanediol with the same molar amount. And the PTMT was challenged by the acid and the same Moore 12 1237670

1,3 propylene glycol is made by coagulation. It is also possible to mix and use these two polyesters. According to the present invention, the use of PTMT is preferred. The polyester may be a simple polymer or a copolymer. Useful copolymers include, in particular, 15 mol% of PBT or PTMT, repeating units of comonomers such as ethylene glycol, diethylene glycol, triethylene glycol, 1,4-cyclohexanedimethanol, polyethylene glycol Alcohol, isoacid and / or adipic acid. For the present invention, it is preferred to use a simple polymer polyester. The polyester of the present invention may further include a conventional amount of additives as a mixing ingredient, such as a catalyst, a stabilizer, an antistatic agent, an antioxidant, a flame retarder, a dye, a dye enhancer, a light stabilizer, an organic tincture, a brightener. Agent and delustering agent. Preferably, the polyester contains 0 to 5% by weight of additives. The polyester may further contain a small amount of branched components, preferably not more than 0.5% by weight. According to the present invention, the preferred branched chain components include multifunctional acids such as triphenylhexanoic acid, or pyromellitic acid, or tris to hexavalent alcohols, methylolpropane, pentaerythritol, dipentaerythritol, glycerol, or phases Corresponding hydroxide. According to the present invention, PBT and / or PTMT is mixed with 0.05 to 2.5% by weight of the added polymer as an extension enhancer. Additive polymers that are particularly useful for this purpose of the present invention include the following specific polymers or copolymers: 1. Polymers are polymerized from monomers, the general formula of which is as follows 1237670 _ Description of the invention continued page

Among them, R1 and R2 are substitutes, including optional atoms C, Η, Ο, S, P, and halogen atoms, and the total molecular weight of R1 and R2 is at least 40. Examples of monomers are acrylic acid, methacrylic acid, and CH2 = CR-COOR ', where R is a fluorene atom or a CH3 group, and R is a Ci_i5 radical, or a C5-I2 circular radical, or C6-14 Allyl, styrene, and Cy methyl-substituted styrene. 2. Copolymers containing the following monomers: A = acrylic acid, methacrylic acid, and CH2 = CR-COOR ', where R is a fluorene atom or a CH3 group, and R' is a Ci_15 compound, or C5-12. Yuanji, or C6-14 Fang Xiangji.

B = styrene and C i _ 3 methyl substituted styrene. The interpolymer contains 60 to 98% by weight A, 2 to 40% by weight, with preferences of 83 to 98% by weight and 2 to 17% by weight B, and more preferably 90 to 98% by weight A and 2 to 15% by weight B ( The total is 100% by weight). 3. Copolymers containing

C = styrene, and Ci_3 methyl substituted styrene. d = 1 or more monomers of the following equation π, m or IV. 14 1237670 _ Description of the invention continued

Among them, R3, R4, and R5 are each a fluorene atom, or a <^ _ 15 alkyl group, or a C5-12 ring group, or a C6-14 aromatic group. The interpolymer contains 15 to 95% by weight of C and 2 to 80% by weight of D. Preferred is 50 to 90% by weight of C and 10-50% by weight of D, and more preferred is 70 to 85% by weight of C. C and 15 to 30% by weight of D. The total of C and D is 100% by weight. 4. Copolymer, containing the following monomer units

E = acrylic acid, propionic acid or CH2 = CR-COOR ', where R is a fluorene atom or a CH3 group, and R' is a (^ _15 alkyl group, or a C5_12 cycloalkyl group, or a C6_14 aromatic group. F = styrene or Ci_3 is substituted by phenyl ethyl. G = 1 or more monomers of the following formula π, m or IV.

15 1237670 _ Description of the invention Continuation page where R3, R4, and R5 are each a fluorene atom, or (^ _15 alkyl, or [5 · 12 fluorene group, or C6-14 scent group. Η = 1 or more ethylene Unsaturated monomers can be copolymerized with the following E, F, or / and G, this is selected by the following groups: including methylstyrene, ethyl acetate, acrylate, methyl propylene, except for Ε In addition, propylene, chloramine, vinyl chloride, vinylidene chloride, halogen-substituted styrene, vinyl ether, isopropyl ether, and diene. This copolymer contains 30 to 90% by weight of E ′ 〇 to 50 F% by weight,> 0 to 50% by weight G, and 0 to 50% by weight rhenium. Preferred are 45 to 97% by weight E, 0 to 30% by weight F, and 3 to 40% by weight. G, and 0 to 30% by weight of rhenium. And more preferred are 60 to 94% by weight of E, 0 to 20% by weight of F, 6 to 30% by weight of G, and 0 to 20% by weight of rhenium. The total of E, F, G and Η is 100% by weight. Component Η is an option. The advantages of the present invention could have been achieved by a copolymer containing components E to G, but according to the present invention, its advantages The point can also be achieved by using a monomer to construct a copolymer of the Η component. According to the present invention, the component Η is preferred, which does not have a negative impact on the copolymer to be used. The component Η can also be used to modify the physical properties of the copolymer to the hope Type, for example, increase or improve the fluid properties of the copolymer when heated to the melting temperature, reduce the residual color of the copolymer, or use the multifunctional monomer to make the copolymer have a 16 1237670 _ An invention description continued to cross link (CROSSLINKING For these reasons, component Η can also be selected to enhance the copolymerization performance of components E to G monomers, such as MA and MMA, which could not be copolymerized, but when a third component is added, such as styrene, Will begin to copolymerize.

Useful monomers suitable for this purpose include vinyl esters, acrylic esters such as methyl acrylate, and ethyl acrylates, methacrylates other than methyl methacrylate, such as butyl methacrylate, and ethanoic acid methacrylic acid Esters, propylene, acrylamide, methacrylamide, vinyl chloride, vinylidene chloride, styrene, methylstyrene, and various halogen-substituted styrenes, vinyl ethers, ether isopropenyl esters, Diene, such as 1,3 butadiene and divinylbenzene. To reduce the color of the copolymer, it is preferable to use a multi-electron monomer such as vinyl ether, vinyl acetate, styrene, or methylstyrene. The best compound in ingredient VII is an aromatic vinyl monomer such as styrene or methylstyrene.

Those skilled in the art are aware of the methods of producing the polymers or copolymers described above. This is described in detail in WO 99/07297. The present invention particularly favors the use of bead-shaped additive polymers and / or copolymers whose particle size is within a particularly advantageous range. The added polymers and / or copolymers used in accordance with the present invention are most advantageous in the form of particles when they are mixed with fiber polymer melts, and their average diameter is between 0.01 and 1.0 mm. However, larger or smaller beads or fragments can also be used. Adding polymers and / or copolymers can also be contained in the fragments of the polymer mixture without the trouble of quantitative addition. The present invention also favors the addition of amorphous and insoluble added polymers and 17 1237670 _ Description of the invention continued on page / or copolymer in a polyester blend. They preferably have a glass transition temperature of 90-200 ° C. Its glass transition temperature can be measured by conventional methods. It is best to use sub-scan calorimetry. Details are set out in WO 99/07927. Choose to add polymers and / or copolymers, it is best to add polymers and / or copolymers to polymer mixtures with a viscosity ratio of 0.8: 1 to 10: 1 such as 1.5: 1 to 8 : 1 is more ideal. The viscosity of the melt can be measured by conventional methods. For example, using a vibration galvanometer, the vibration frequency is 2.4HZ, and the temperature is the melting point of the polymer mixture plus 28t :. PTMT has a melt viscosity of 255 ° C. Details are described in WO 99/07927. The viscosity of the slurry with the added polymer and / or copolymer is preferably higher than the viscosity of the polymer mixture. In addition, the viscosity range and the viscosity ratio of the polymer and / or copolymer are selected to help improve the quality of the yarn product. For example, the viscosity ratio is ideal, and the polymer and / or copolymer can be reduced. The amount. Thereby, the economic benefits of the system can be enhanced. The polymer blend preferably contains 0.05 to 2.5% by weight of the added polymer and / or copolymer before spinning, and its addition amount is more preferably from 0.25 to 2.0% by weight. The viscosity ratio provides the narrow particle size distribution of the added polymer and / or copolymer in the polymer mixture while the small fiber structure of the added polymer and / or copolymer is required in the fiber. The higher glass transition temperature of the added polymer and / or copolymer than the polymer mixture is to ensure the rapid integration of the small fiber structure in the spin-formed fiber. The largest particle of the added polymer and / or copolymer from the weaving protrusion The size is about 1000nm and the average particle size is less than 400nm. The most advantageous small fiber structure is 18 1237670 ____ Description of the invention Continued page Obtained after fiber extraction. At this time, the filament contains at least 60% by weight of a small fiber type of the added polymer and / or copolymer 'having a length of 0.5 to 20 um and a diameter of 0.01 to 0.5 um. The polyester useful in the present invention is preferably a thermoformable plastic 'and can be spin-formed into filaments and wound. Here, the viscosity of poly (vinyl acetate) which is particularly advantageous is limited to between 0.70 dl / g and 0.95 dl / g. The polymer melt comes directly from the final reaction tank of the polycoagulation plant or from a solid polymer sheet produced by a pulp extrusion machine. A known method of integrating rotary molding additives is to measure into the polymer mixture in a molten or solid state and then uniformly disperse to form fine particles. The device shown in DE 10022889 is preferably used. The manufacturing method of the present invention is not limited to any particular spinning and drawing method. Conversely, all traditional spinning and drawing processes can be used. Therefore, although a very specific spinning spinning method is discussed here, reference is also made to general technical knowledge, in particular `` synthetic fibers, '' by FOURNE (1995), published by Munich Hanser. In the preferred specific manufacturing method of the present invention, the melt of polyester or its molten mixture is pumped at a fixed speed through a spinning drawing pump. This system uses a known equation to calculate the speed at which the linear density of the desired fiber can be obtained. The protrusion machine is then extruded through holes in the die-casting plate into molten filaments. For example, the melt can be made from polymer sheets in an extrusion molding machine. In this case, the sheet is first dried to a moisture content of less than 30 ppm, preferably less than 15 ppm. The temperature of the melt, usually referred to as spinning The molding temperature is also measured on the spin pump 19 1237670 Description of the Invention Continuing Spinning Molding Pump, which depends on the melting point of the polymer or polymer mixture used. Preferably within the range suggested by equation i Equation 1

Tm + 15 ° C &lt; Tsp &lt; Tm + 45〇C where

Tm = melting point of polyester (° C)

Tsp = Rotary wire drawing forming temperature (° c) The opening parameter is used to limit hydrolysis and / or thermal viscosity degradation, the lower the better. According to the present invention, the viscosity degradation is less than 0.12 dl / g, particularly preferably less than 0.08 dl / g. The uniformity of the slurry will directly affect the material properties of the spinning wire. In addition to the static mixer in the product line, it is best to use a static mixer with a minimum of one component to homogenize the melt under the spinning wire drawing pump. The temperature of the die-casting plate is determined by the temperature of the spinning wire drawing and is controlled by the secondary heating system of the plate. Available secondary heating systems include rotating beams heated with `` DIPHY '', or additional convection or radiant heaters. Generally, the temperature of the die-casting plate and the spinning drawing temperature are always the same.

The temperature of the die-casting plate can be increased by the pressure rise and fall rate of the textile protrusion machine. Literature in this regard includes `` FORTSHRITTE IN DER HERSTELLUNG VON POLYSTER-REIFENKORDGARN by K. RIGGERT, '', CHEMIEFASERN, 21 edition, 379 pages (1971). It is said that for every 100 bar pressure reduction, the temperature increases by about 4 ° C. Note that the continuation page can also control the pressure of the die-casting plate through the filter medium, especially the steel sand, whose average particle is between 0.1 to 1.2 mm, preferably 0.12 to 0.75 mm and / or the filter disk. This can be made of knitted or non-woven metal fibers with a fineness of S40um.

In addition, the pressure difference of the die-casting holes also contributes to the total pressure. The pressure of the die-casting is preferably set between 80 bar and 450 bar ', particularly preferably between 100 and 250 bar. The elongation ratio isp 'is the ratio of the take-off speed to the extrusion speed. It is based on the equation 2 of US 5250245. It is determined by the calculation of the density of the polymer or polymer mixture, the diameter of the hole of the textile protrusion and the linear density of the filament . Equation 2 isp = 2.25 · 105 · (d · P) · D2 (cm) / Dpf (den) where

d = melt density (g / cm3), in terms of PTMT, d = 1.12g / cm3 D = diameter of textile protrusion machine hole (cm)

Dpf = Denier (den) for each filament For the purpose of the present invention, the elongation ratio of the spinning wire is most advantageously between 70 and 500, particularly preferably between 100 and 250. The ratio of the length and the diameter of the hole of the textile projection machine is preferably selected between i.5 and 6, especially between 1.5 and 4. ^ Extruded filaments pass through a cooling delay zone. This cooling delay zone is located in a recessed area directly below the rotary wire drawing molder to protect the filaments from the holes of the weaving protrusions from being directly affected by the cooling air. This recessed white area 21 1237670 _ Description of the Invention The active part of the continuation sheet is constructed as an extension from the rotary spinning machine to the rotary spinning beam, so the filaments are surrounded by the heated wall. The passive part is formed by an insulated and unheated frame. The most advantageous length of the active part is between 0 and 100 mm, and the most advantageous length of the passive part is between 20 and 120 mm. The best overall length is between 30-200mm, or between 30-120mm. An alternative to actively recessed areas is to place the reheater under a spinning wire-forming beam. Different from the active recessed area, the cylindrical or rectangular cross section of this area contains at least one heating system and the spinning wire drawing beam is independent of each other. In a radioactive porous cooling system, which is a system that surrounds a rotary wire drawing line, the cooling delay can be achieved with a cylindrical enclosure. The filaments are thereafter cooled to a temperature below the curing temperature. The curing temperature used in the present invention refers to the temperature at which the molten slurry enters a solid state from melting. For the purposes of the present invention, it is most advantageous when the filament is cooled to a temperature where it no longer feels sticky. It is particularly advantageous to cool the filaments to a temperature below their crystallization temperature, especially below their glass transition temperature. Cooled filament methods are available in the literature. According to the present invention, it is most useful to use a cooling gas, especially cold air. The temperature of the cooling air is preferably between 12 ° C and 35 ° C, especially in the range of 16 ° C to 26 ° C. The most favorable flow rate of the cooling air is in the range of 0.20 m / sec to 0.55 m / sec. The filaments can be cooled with a single cooling tube containing a wave wall in a single-ended cooling system. Each filament is cooled by actively supplying cooling air or by the self-priming action of the filament. Instead of each individual tube, a conventional cross-flow cooling system can also be used. 22 1237670 _ Description of the invention Continued and the width of the oil inlet hole must match the linear speed of the yarn and the number of filaments. The hole and width range is most suitable for 1.0mm to 4.0mm. The structure of the outlet part of the oil needle must be uniform, and it is better to include the oil groove. Oil tanks are available from CERAMTEC, Germany or GOULSTON, USA. For the present invention, the uniform use of oil is the most important. Uniformity can be determined, for example, using a ROSSA meter, as detailed in CHEMIEFASSERN / TEXTILINDUSTRIE, 42/94 1992_November, page 896. This method provides the standard deviation of the used oil 値 less than 90 digits (DIGITS), especially less than 60 digits. The present invention particularly requires the standard deviation 使用 of the oil to be used to be less than 45 digits. Especially less than 30 digits. Standard deviations of 90 or 45 digits are equivalent to 6.2% and 3.1% coefficients of variation. It is particularly advantageous for the present invention to design the rotary wire drawing forming completion line and to help the oil remove oil by itself to avoid air bubbles, because air bubbles can cause large changes in the amount of oil used. According to the invention, it is particularly necessary to wind the filament before winding the yarn. In the present invention, the nozzle capable of closing the bobbin is particularly suitable because such a system prevents the yarn from kinking in the feed slot even at low yarn tension and high air pressure. The wound nozzle is preferably placed between the rollers. The yarn exit tension is controlled by the different speeds of the roller in and out. Yarn exit tension should not exceed 0.20 cN / dtex, which should basically be between 0.05cN / dtex and 0.5cN / dtex. The pressure of the entrained air is between 0.5 and 5.5 bar, or when the take-off speed reaches 3500 m / min, the pressure does not exceed 3.0 bar at most. The yarn is preferably wound up to a minimum of 10 η / m. It is best if the maximum no-node gap is less than 100cm and the variation of the number of nodes coefficient is less than 10024 1237670 _ Description of the invention continued on%. It is particularly advantageous to use air pressure higher than 1.0 bar to increase the number of nodes to 15 n / m. At that time, it was characterized by high uniformity, so that the coefficient of variation would not exceed 70%, and the maximum no-node gap would be 50 cm. In practice, the LD system of German TEMCO, SLACK AND PARR of the United States, or POLYJET of HEBERLEIN are all very good. The peripheral speed of the first drum is called the take-out speed. Before the yarn is wound, in the winding combination, more rollers can be used to form a winding tube on the tube, which can be used to extract, heat set and / or relax the multi-filament yarn. A particularly useful method in the present invention is to heat-treat the multifilament yarn before winding it, preferably at a temperature of 50 to 150 ° C. The heat-treatment can be performed by any conventional method. The most suitable heat treatment is a heated roller. Drums used for this purpose include the equipment referred to in the book '' Synthetic Fibre '' by FOURNE (1995) (published by HANSER, Munich). Another useful method of the present invention is to heat the multifilament yarn with hot gas, especially hot air. A third desirable method in the present invention is to heat treat the multifilament yarn by radiant heat. Heat treatment of multifilament yarns can also bring the yarns close to but not in contact with the heated surface, as described in EP 731196. A stable and missing-free combination is a basic element for missing-free winding yarns and for further defect-free processing. Therefore, according to the present invention, the advantageous rolling tension is set to 0.025 cN / dtex to 0.15 cN / dtex, and the best tension range is 0.03 cN / dtex to 0.08 cN / dtex. 25 1237670

According to the invention, an important processing parameter is the setting of the yarn tension on the take-out drum and between the drums. Basically, this tension is the combination of the true directional tension of HAMANA and the friction tension of the yarn-guided friction needle and yarn air. For the purpose of the present invention, the yarn tension on and between the take-out drum is set to be between 0.05 cN / dtex and 0.20 cN / dtex, preferably between 0.08 cN / dtex and 0.15 cN / dtex. Too low tension, such as below 0.05 cN / dtex, will not provide the required degree of partial orientation. However, when the tension exceeds 0.20cN / dtex, this tension often causes memory effect problems during winding and storage of the bobbin and degrades the yarn parameters. According to the present invention, the tension is controlled by the distance between the nozzle of the textile protrusion machine and the oil machine, the friction surface, and the distance between the oil machine and the take-out drum. An advantageous length is not more than 6.0 meters, preferably less than 2.0 meters. This is due to the fact that the spinning and drawing system and the take-out unit are arranged in parallel to ensure that the yarn travels in a straight line. The geometric parameters are sufficient to explain the adjustment time of the yarn between the conveying point and the rolling point. Quick relaxation during this time will affect the quality of the yarn package. The so-called adjustment time is preferably selected between 50 and 200ms. According to the invention, the winding speed of the predetermined yarn is set between 2200 m / min and 6000 m / min. It is best to choose a scroll speed between 2500m / min and 6000m / min. This is particularly advantageous for winding speeds of polymer mixtures between 3500 m / min and 6000 m / min. According to the present invention, the heat treatment temperature of the wound multi-polyester yarn package is &gt; 45 ° C to 65 °. (: Between. The time for heat treatment can be freely selected. However, such as 26 1237670 _ Description of the Invention Continued pages use conventional methods, such as heating rollers or hot rails, the processing time will naturally be much longer. According to the present invention, in the aforementioned The heat treatment in the temperature range takes at least 5 minutes, preferably not less than 10 minutes, more preferably not less than 20 minutes, and particularly preferably 30 minutes or more. The above time is calculated from the start of winding. Anything can be used Heat treatment in a conventional manner. Suitable methods include the principles of heat conduction, convection, and / or heat radiation. The preferred method of the present invention is to heat the wound gauze with a heated roll or drum, preferably with a minimum of A contact surface roller can measure and control the winding speed at the same time. The more preferred method of the present invention is to heat the wound gauze with radiation. The third preferred method of the present invention is to wind the The yarn wrap is heat treated with a heated gas. Suitable gases include air and inert gases such as nitrogen, helium, and / or argon. Here, hot air has been used. It is considered to be the best method. The temperature of the hot air is preferably consistent with the temperature in the cabinet, that is,> 45t to 65 ° C. Therefore, the temperature of the hot air is preferably> 45 ° C to 65 ° C. Therefore, the relative humidity of the hot air is preferably between 40 and 90%. The flow rate of the hot air at the inlet is preferably in the range of 5 to 100 m3 / h. The heat treatment of the wrapped yarn bag is preferably wound with one or more devices. The multi-filament yarn includes a box body and a rotatable spindle, and the cover can fix the tube to the tube so that the tube is covered by the box body. The heat treatment is preferably performed in the box body, preferably by heat conduction, Thermal convection and / or thermal radiation heat the wrapped yarn package. Rotary spindle is part of the winding machine. At least one tube is clamped on 27 1237670 _ Description of the invention Rotary knobs. And at least one multi-filament The yarn is wound on at least one tube to form at least one winding gauze. After winding, at least one tube with the winding gauze can be removed from the chuck. Any kind of previously used winding machine can be used in this machine. Invention, as long as the purpose of the invention can be achieved. For details of the steps, please refer to the technical literature, especially the book by FOURNE (1995), 'Synthetic Fibers' published by HANSER in Munich. The existing winding machine technology is as traditional, and the present invention allows to wind 1 or more on a spindle at the same time. Strips, especially 1 to 12 multi-filament yarns. According to the present invention, it is best to wind multiple multi-filament yarns at the same time to increase the efficiency of the spin-drawing molding operation. It is made of conventional materials. However, it is most advantageous to use thermal insulation materials, and it is also better to insulate noise. Suitable materials include plastics, especially plastics and metals with a glass transition temperature greater than 65 ° C, such as stainless steel and alloys. The thermal insulation material can use a single layer structure or a multilayer structure, such as 2, 3 or more layers. Preferably, the thermal conductivity of the thermal insulation material is less than 10 w / (m · k), more preferably less than 1 w / (m · k), and more preferably greater than 0 · 5 w / (m · k). It is preferably greater than 0.1 w / (mk). When using three layers of thermal insulation and noise insulation materials, the thermal conductivity of the intermediate layer material should be less than 0 · 1 w / (m · k), and the outer layer material preferably includes a metal or alloy, or consists of a metal or alloy 'This will give particularly favorable results. The size of the phase body is preferably such that it can house all the winding machines or at least the chuck and the largest diameter bobbin including the wrapped yarn package. The most profitable case is also to accommodate additional winding equipment, including contact rollers for control.

1237670 A winding speed and preferably a crossing device. Therefore, the smallest box should be able to obtain the high-quality negative yarn without missing winding effect. In addition, it is also important that the size of the box is the smallest, so the winding room outside the box must also have standard operating conditions, and at the same time, the goal of achieving the minimum heating cost inside the box is best The yarn package that is fed into the multi-filament yarn by a simple method is easy to remove, and can produce still weight, preferably greater than 2 kg, and more preferably greater than 4 kg. A particularly preferred method of the present invention is that the heat treatment of the wrapped yarn package is-using at least one kind of hot gas in the box. These gases preferably enter the cabinet through an inlet, and then exit through an outlet. The most advantageous is that the inlet and outlet connections together allow gas to circulate in a circulation system that includes an inlet and an outlet. -According to the moving direction of the yarn, it is best to send the gas to the back of the tube and then discharge it from the front of the tube. Although the gas can also be heated inside the box, it is better to be able to heat it outside the box so that the temperature inside the box is often consistent.

According to the present invention, the temperature measurement in the cabinet is preferably performed by at least one temperature sensor. In addition, the temperature of the gas can be properly heated outside the cabinet, so that the temperature inside the cabinet can be maintained between &gt; 45 ° C and 65X :. In addition, the external temperature sensor and the gas heating element are preferably connected to each other so that the temperature of the gas can be maintained in a preset range, and the best range is between &gt; 45 ° C and 65 ° C. A particularly preferred method of the present invention is the heat treatment of the wrapped yarn package, at least made of a hot gas in the case. The gas is best made by a 29 2937670

The mouth enters the box and then exits through an outlet. The best thing is that the inlet and outlet are connected so that the radon gas can circulate in a circulation system. The gas, viewed from the direction of yarn movement, must first enter the back of the tube and then be discharged from the front of the tube. Although the gas can also be heated inside the cabinet, it is best to heat it outside the cabinet to maintain a uniform temperature distribution inside the cabinet. According to the present invention, the temperature measurement in the cabinet is preferably performed by more than one temperature sensor. For consistency of the temperature of the gas, it is best to moderately heat the outside of the box, and the temperature inside the box should be set at &gt; 45 ° C to 65 ° C. Temperature sensing: The gas heating elements are best connected to each other so that the temperature of the gas can be controlled within a preset range, preferably between &gt; 45 ° C and 65 ° C. When measuring the temperature in the cabinet, compare it with the preset temperature, and then heat or lower or maintain the temperature of the heated gas according to the temperature difference.俾 Keep the temperature in the cabinet within the required range. The temperature inside the cabinet should be tested at at least two points. Depending on the direction of yarn movement, it is best to check that the temperature inside the box is always the same before and after the sleeve. Also adjust the gas temperature and its flow rate appropriately to prevent temperature changes. In order to feed the multi-filament yarn before the start of winding, the box preferably has an opening. Especially slot-shaped openings. The configuration of the grooves depends on the direction of the yarn movement. It is best for the multifilament yarn to enter the box horizontally. When winding, the grooves should be partially covered with appropriate methods to insulate the inside and outside of the box to avoid a temperature difference in the phase body. The method that is particularly preferred in the present invention is, the factory's: The way of covering is to use the fins to fix it on the outer surface of the box, when Xuan Guang 8.3.1 30 Invention_Month Continued On. This blade shovel is used to hold the groove like a knife, and it can feed multi-filament yarn into the sieve. There can be one or more sieve holes. When the fin is closed, one or more shovel boxes are required. =. The position, size, and opening of the cabinet opening are required. * ΰ It depends on the length of the horizontal movement of the yarn package after winding. You can use the exercises here to control the setting of the yarn package after winding. There is a horizontal movement equipment, and a specific shape of the horizontal movement ^^^. However, the present invention is not limited to the use of any equipment, as long as the perch = force equipment 'is the opposite, if the conventional horizontal movement is interesting, anyone can use it. limit. For example, the position of the moving equipment is not set directly above. At this time, f is placed outside the box, and it is better to open the flaps of the multiple screen holes of the multi-filament yarn inlet. And by the length of one or ditch to hold it in accordance with the right. The grooves preferably extend parallel to the tube. The groove is not vortex. 1. Make an appropriate choice for the length of the moving equipment. Direction 丨 The page-moving equipment is preferably installed in the box, and the body η ′ that is moved by the yarn is far from the front of the multi-filament yarn winding tube. In this way, the size of the opening of the box bean can be minimized, and the temperature difference in the box can be suppressed. The external openings are preferably slot-shaped and covered by one or more screen fins. The grooves preferably extend parallel to the tube. To remove the wrapped yarn package by the winding device, according to the present invention, there must be an appropriate method to open the device. At this time, it is most advantageous that the box adopts a closable opening, which can be closed when spinning and spinning. Cabinet to ensure that the temperature inside the cabinet is fixed. The closable opening is preferably a door that can be opened when feeding silk yarn or removing the wrapped bag after winding, and can be closed when spinning 1237670 _ drawing and winding. This closable opening is best installed in the front of the cabinet. The door is opened briefly, and it is not important to be able to remove the wrapped yarn package when the guide rod is automatically changed in the winding position. Figure 1 is a particularly suitable illustration of such a device. The winding device 2 contains a case 4. The cabinet 4 has a lower wall 6, an upper wall 8, two side walls 10 and 12, a front wall 13 and a rear wall 16. The upper wall 8 faces the direction in which the multifilament yarn comes in. The front wall 14 has the function of a door, that is, the cabinet 4 can be opened or closed by the front wall 14. A drive unit 18 is mounted on the rear wall 16 outside the case 4. The upper wall 8 has an opening 20 in the shape of a groove, extending from the front wall 14 toward the rear wall 16 and parallel to the side walls 10,12. The opening 20 is partially covered by the flap 22. The multifilament yarn 26 can pass through the sieve opening 24 and the opening 20 to enter the case 4. Because the opening 20 extends from the right side to the front wall 14, the multi-filament yarn 26 can enter from the side of the box 4 when the front wall 14 and the flap 22 are opened. Judging from the moving direction of the multifilament yarn, its moving direction is indicated by the arrow A in Fig. 1. A lateral moving unit 28 is installed behind the opening 20 in the box 4. The lateral moving unit 28 is connected to and driven by a driving unit 18 of the back wall 16. Viewed from the moving direction A of the multifilament yarn 26, the four tubes 30 are clamped to the chuck of the rotating spindle installed behind the moving unit 28 of the casing 4, and the spindle is connected to the driving unit 18, so the spindle and the tube 30 are clamped On the spindles, it is necessary to be able to rotate along their axis as the drive unit 18 rotates. Two temperature sensors 32 are installed in the box 4 for measuring the temperature in the box 4 and controlling the direction of heat flow. One of the sensors 32 is installed 32 1237670-Description of the invention continued on the back of the tube 30, and the other is installed in front of the tube 30, which is viewed from the moving direction A of the multifilament yarn 26. The cabinet 4 has an outlet 34, which is located on the upper wall 8, and an inlet 36 which is installed on the rear wall 16. In other words, viewed from the moving direction A of the multifilament yarn 26, the outlet 34 is before the tube 30, and the inlet 36 is after the tube 30. The outlet 34 can be optionally connected to the heating and blowing unit 38 through the circulation system 40, which is shown in dotted lines in FIG. 1, so that the heated gas can be recycled to reduce processing costs. The inlet 36 is connected to the heating and blowing unit 36 via a circulation system 42. The heating and blowing unit 38 heats the gas, such as air, and then blows the gas in the direction shown by the arrow B in FIG. 1, so that the gas circulates through the box 4. The temperature in the tube filling area can also be controlled by adjusting the parameters of the heating and blowing unit 38 set by the sensor 32. The operation method of the above-mentioned device 2 will now be described. First of all, the multifilament yarn 26 must be fixed, and it is preferably clamped on the tube of the collet 30 using a pneumatic gun. For this reason, the front wall 14 and the flaps 22 must be opened so that the multifilament yarn 26 can enter the slot-shaped opening 20. After the multifilament yarn 26 can be entered, the combined operation of the winding machine control system is started. The front wall 14 and the flaps 22 are closed again, and each multifilament yarn passes through its screen holes 24 on the flaps. The yarn runs into the tube 30 and moves laterally to form a yarn package 44. When the multifilament yarn 26 is wound, the hot gas enters the case 4 through the inlet 36 to heat the case and the yarn package 44 on the tube 30. The hot air then passes through the outlet 34 to the heating and blowing unit 38 to a preset temperature range to the wrapped yarn package 44 and the multifilament yarn 26. The method of the present invention can produce a cheese-like winding gauze 44 on the tube 30, as shown in FIG. Winding gauze 44 shrinks and deforms or compresses during storage 33 1237670

It melts and is fed into the feeder with a fixed-quantity pump by a gear, where it flows into the polyester component through the nozzle. The two melts were then mixed uniformly and finally dispersed into Sulzer's SMX static mixer, which had 15 elements and an inner diameter of 15mm.

Plexiglas7N has a melt viscosity of 810Pas (at 2 · 4Ηζ and 255 ° C). As a result, the ratio of its additive to the viscosity of the polyester melt is 2.5: 1 ° The throughput of the melt is 63g / min, and the residence time is 6min. The flow rate of the spinning spinning pump to the textile protrusion machine is adjusted at a POY linear density of about 102 dtex. Use various scroll speed settings. A Fluitec HD-CSE. Type static mixer is installed below the rotary wire-drawing pump and above the entrance of the textile protrusion machine. This device has one element with an inner diameter of 10mm. The product line's secondary heating system and rotary wire drawing molding device, including pumps and textile protrusion machines, are set at 255 ° C. Inside the weaving machine, there are 30mni round ’350-500 &quot; m steel grit, 20 βπ non-knitted and 40 &quot; rn knitted fabric filters as filter media. The melt is extruded through a 80mm diameter woven protruding plate. The plate has 34 holes, a diameter of 0.25mm and a length of 1.0mm. The pressure of the mold is 120-1400. The cooling delay zone is 100mm long, with 30mm heated walls, 70mm insulation and unheated frames. The molten filaments were finally blown by air to rotate the wire drawing forming line, and the length was 1500 mm. The cooling air flow is 0.35m / sec, the temperature is 18 ° C, and the relative humidity is 80%. The filament becomes solid at 800 mm below the textile protrusion machine. There is a dispenser at about 1050mm away from the textile protrusion machine. Before the gathering, the finishing oil is first added to the formed yarn to the end point. Tanker with Tribofil 38 1237670

Surface and entrance diameter lmm. The dose used is 0.4%, depending on the fiber weight. The gathered spinning wire is then sent to a winding machine. The distance between the dispenser and the first take-out drum is 3.2m. The adjustment time is between 95 and 140ms. A pair of rollers, the yarn is wound into an S shape. The TEMCO roll-in nozzle is used between the drums to operate the air pressure of 1.5 bar. To be consistent with the speed setting ’The setting of the winding speed of the BARMAG SW6 winder should be equivalent to the tension 6cN of the yarn taken out. The winding machine is installed in a box, and the air is heated and sent into the box by a blower. This box has a ring buckle, the temperature is controlled between 63 ° C and 1-5 ° C, and its position in the box is 20cm from the spinning gauze. The polyester yarn using additives has a significant increase in productivity regardless of the amount used. The ten-kilogram reel can be immediately removed from the winding machine. The completed POY yarn is stored for four weeks under DIN 53802 standards It still retains its original texture. The boiling shrinkage measured immediately after winding is 5 to 8%, which is less than 2% higher than the reel after storage. Excellent weave and dyeing uniformity. As far as POY speed is concerned, the maximum draw ratio used is already surprisingly high. According to the definition of EPS 0080274, page 6, line 51, the stretching ratio = (1 + POY elongation (%) / 100). For simulation, the spools with these parameters were exposed to a temperature of 60 ° 0 in the heating box for 20 hours. As a result, the shape of the spool and the fabric information were not significantly changed. Comparative Example 4 The same thing as Example 1 of the invention was repeated. The difference was that the additive dosing system was not connected to the product line, so no elongation enhancer was added. In addition, the winding box was removed and a temperature of 34 ° c was set at the same measurement point. Entangling 39 1237670

The room temperature of the gauze is 24 ° C. Compared with Invention Example 1, the elongation is low due to the lack of an elongation reinforcing agent. Therefore, the maximum DR has a lower maximum stretching ratio. Therefore, the energy and economic benefits of its spinning and drawing are low. In addition, due to improper heat treatment of the wrapped yarn package, the boiling shrinkage was 53%, which was only 9% less than the 44% after storage. After 6 (heat treatment of TC will also reduce its boiling shrinkage by about 44% (absolute 値). Other parameters and characteristics are detailed in Tables 1 to 4. Table 1 Experimental parameters Experimental parameters Invention Example 1 Invention Example 2 Additive concentration (%) 0.7 1.0 Take-off speed (m / min) 3520 4022 Rolling speed (m / min) 3500 4000 Textile protrusion machine elongation 182 181 Yarn tension above the roller 1 (cN) 15.5 16 Max. Between rollers 1 (cN) 13 12.5 Above the roller 2 (cN / dtex) 0.15 0.16 Max. (cN / dtex) 0.13 0.12 Winding yarn tension 1 (cN) 5.9 6.4 Winding yarn tension 2 (cN / dtex) 0.058 0.062 The winding box is 1: absolute 2 2: Based on linear density determination

Claims (1)

: I23_〇d Supplement, ... Patent scope 1. A method for producing and winding partially oriented polyester multifilament yarn, which contains not less than 85% by weight of polybutylene terephthalate (PBT) and / or Polytrimethylene terephthalate (PTMT) and at least one type of added polymer elongation reinforcing agent between 0.05% and 2.5%. This reinforcing agent helps ensure the long-term storage stability of the yarn package after winding, and during storage and transportation The gauze will not be allergic to high temperature and heat treatment at 45 ° C-65 ° C. 2. The method according to item 1 of the scope of patent application, wherein the heat treatment of the wrapped yarn package uses a heated roll or a roller. 3. The method according to item 1 or 2 of the scope of patent application, wherein the heat treatment of the wrapped yarn package is performed by radiant heat. 4. The method according to item 1 of the scope of patent application, wherein the heat treatment of the wrapped yarn bag is performed by heating gas. 5. The method according to item 1 of the scope of patent application, wherein the wrapped yarn bag is placed in a box and surrounded by pipes for heat treatment. 6. The method according to item 5 of the patent application scope, in which the gas system enters the cabinet through an inlet. 7. The method according to item 6 of the patent application, in which the gas system leaves the cabinet through an outlet. 8. The method according to item 7 of the scope of patent application, wherein the gas system is circulated in a circulation system including an inlet and an outlet. i 9. The method according to item 7 or 8 of the scope of the patent application, in which the gas system enters from the back of the tube and is discharged from the front of the tube when viewed from the moving direction of the yarn. 10. The method according to item 6 of the scope of patent application, in which the gas system is added to the outside of the cabinet. 44 3 grade pages (if the scope of the patent application page is not enough, please note and use the grade page) 1237670 Application __ Ji 裒 Hot. 11. The method according to item 10 of the scope of patent application, in which the temperature in the cabinet is measured and the gas temperature is appropriately heated to keep the temperature in the cabinet within the range of 45 ° C to 65 ° C. 12. The method according to item 1 of the scope of patent application, wherein the wrapping gauze is wound into a cheese shape. _ 13. The method according to item 1 of the scope of patent application, in which at least one polyester multifilament yarn is heat-treated between 50 ° C and 150 ° C before winding. 14 The method according to item 13 of the patent application, wherein at least one polyester multifilament yarn is heat-treated with a heatable roller. 15. The method according to item 13 of the patent application, wherein at least one polyester multifilament yarn is heat-treated with a heated gas. 16. The method according to item 13 of the patent application, wherein at least one polyester multifilament yarn is heat treated by radiant heat. 17. The method according to item 1 of the scope of patent application, including: ⑻ setting the spinning elongation ratio between 70 and 500; (b) directly entering the cooling delay zone when the filament comes out of the textile protrusion machine; the zone length is 30mm To 200mm; (c) cooling the filaments to below the curing temperature; (d) gathering the filaments from 500mm to 2500mm away from the lower surface of the textile protrusion machine; (e) setting the yarn tension at 0.000 before taking out the drum and between them. 5cN / dtex and 0-20 cN / dtex; ① Take out the yarn with a yarn tension between 0.25cN / dtex and 0.15cN / dtex. 45 1237670 Application_continuation page 18. The method according to item 1 of the scope of patent application, wherein the scroll speed is between 2200 m / min and 6000 m / min. 19. The method according to item 1 of the patent application scope, wherein the limiting viscosity of polybutylene terephthalate (PBT) and / or polytrimethylene terephthalate (PTMT) is 0.70 dl / g to 0.95 dl / g. 20. —Partially oriented polyester multifilament yarn produced according to the method of the scope of patent application No. 1 after storage for four weeks under the standard conditions set by DIN 53802, its characteristics: ⑻ Elongation at break is between 75% and 145% (B) The boiling shrinkage range is between 0% and 10%; (c) Normal USTER 値 1.1%; (Φ the coefficient of variation of the breaking load &lt;4.5%; (e) The coefficient of variation of the breaking elongation &lt; 4.5%. 21. — A method for producing bulk yarn, in which the multifilament yarn according to item 20 of the patent application is processed by a drawing weaving machine, and the minimum speed is 500 m / min. 22—A method for producing bulk yarns according to method 21 of the patent application Polyester SET filaments are characterized by a breaking strength greater than 20 cN / dtex and an elongation at break greater than 32%. 23 · —A type of bulk polyester HE filament produced according to method 21 of the scope of patent application, characterized by a breaking strength greater than 20cN / dtex and elongation at break are greater than 30%.