KR100586114B1 - Polyethyleneterephthalate twisted yarn and printable polyethyleneterephthalate blanket thereby - Google Patents

Abstract

The present invention relates to a modified polyester resin having an IV value of 0.4 to 0.65 synthesized from terephthalic acid or dimethyl terephthalate, ethylene glycol, sulfoisophthalic acid compound, and polyalkylene glycol. %, Total shrinkage of 2 to 20% and bending thickness of 5 to 30㎛ relates to a polyethylene terephthalate false twist yarn and a polyethylene terephthalate printing blanket using the same, the polyethylene terephthalate false twist yarn according to the invention as a pile yarn, The low shrinkage polyethylene terephthalate yarn is used as a ground yarn to provide a polyethylene terephthalate printing blanket characterized by being knitted and printed, which not only replaces the existing acrylic printing blanket but also provides a new touch that could not be made with existing acrylic. Can provide a blanket of performance.

Description

Polyethylene terephthalate twisted yarn and polyethylene terephthalate printing blanket using it {{Polyethyleneterephthalate twisted yarn and printable polyethyleneterephthalate blanket}}             

1 is a cross-sectional view of an example for measuring the thickness of the false twisted yarn of the present invention.

2 is a cross-sectional view of an example for measuring the bending thickness of the false twisted yarn of the present invention.

※ Explanation of symbols for main parts of drawings ※

a: fiber section thickness b: bending thickness

The present invention relates to a polyester blanket capable of printing at normal pressure. Existing blankets are made of various materials such as cotton, wool, and chemical fibers, and each has unique characteristics.

Among them, polyester has been used a lot as a material for woolen blankets, also known as Polarifleece, rather than printing blankets. Polyester has been widely applied to nicknames and fleece blankets because of the relatively low raw material cost except for the disadvantage of dyeing at high temperature and high pressure, as well as the advantages of easy to manufacture various kinds of yarns and easy processing and handling. Since the polyester is a synthetic fiber, there is an advantage that it is easy to change its thickness or cross-section and to artificially express various effects, compared to the natural fiber, and using this advantage, a blanket for a special purpose, for example, Light blankets, warmed blankets and softer blankets could be manufactured, and the level and degree of adjustment was convenient.

The characteristics of the existing Polley Fleece blankets made of polyester are compared with the print blankets represented by mink blankets. First, the blanket is relatively small in size, secondly, it is light but excellent in warmth, thirdly, the pile of the surface is piled up like a wool without any bristles, and fourthly, there is no colorful pattern or picture, and the plain color of the plain feeling is generally simple. Have However, since polyester can be dyed by high temperature and high pressure dyeing with a disperse dye, there are disadvantages in that it is difficult to express vivid colors in terms of facility constraints. Although polyester has advantages of superior physical properties and price compared to other textile materials, this dyeing problem has caused the polyester not to be used for a specific purpose.

On the other hand, an acrylic blanket may be mentioned as a blanket to be distinguished from the polar reply blanket, which is capable of printing due to its advantages of being rapidly and vividly dyed to cation dye under normal pressure. In the acrylic print blanket called the mink blanket, it is common to see various patterns such as animals such as tigers and lions, and from landscape painting to abstraction. All of these beautiful appearances are printed. However, acrylic mink blankets are heavier than wool blankets, and have a disadvantage of poor thermal insulation, and the yarn is stiff, giving a rough feel to the touch. In addition, acrylic has a number of disadvantages. For example, the loss of a large amount of yarn during the process of brushing and hair removal, the lack of weaving processability, and the lack of hair in the final product should be improved. .

Therefore, at present, a method of manufacturing a blanket having a clear and diverse pattern of acrylic printing blanket while having the physical advantages of the polarized blanket is not implemented.

For this reason, many studies have been made until recently regarding the modification of the resin for improving the dyeability of polyester. In the early days of the development of relatively polyester and already commercialized, it is possible to use cationic dyes by copolymerizing metal sulfonate compounds with general polyesters, so that the dyeing is more vivid than general dispersion dyes. I made it. However, the copolymer made in this way is limited to use only for special purposes because of the problem of inferior strength and heat resistance compared to the general polyester. In addition, during the weaving process, the pressure of the polymer filter is rapidly increased, which shortens the cycle of use of the spinning equipment and generates a lot of static electricity, thereby limiting processability and productivity.

In addition, a small amount of isophthalic acid was mixed with terephthalic acid, the main raw material of polyester resin, to reduce the crystallinity of the polyester and to change the crystal structure, thereby making it possible to disperse dyeing at normal pressure instead of high temperature and high pressure.

In a similar manner, a method of modifying the original polyester crystal by introducing a foreign material, for example, an inorganic substance, a metal salt substance, or another polymer, which is not a raw material of a conventional polyester resin into a polyester polymerization step, has been studied. However, a disadvantage of these attempts to change the crystals of polyester resins is that they lose the inherent advantages of polyester because of excessive changes in the physical properties of the polyester resin. For example, modified polyester, which is easier to penetrate the dye due to lower crystallinity, may be more easily separated from the dye due to the easier penetration of the dye, resulting in poor dyeing fastness. In order to lower the dyeing temperature of the polyester to 100 ° C. or less, excessive amounts of the inclusions have caused a problem that the strength or heat resistance of the polyester yarn is remarkably low and thus it cannot be used for proper use.

In addition, there have been attempts to change the cooling conditions during application, to apply a steam set during spinning, or to increase spinning speed as a method for improving dyeing properties while using existing resins without modifying polyester resins. This method has the advantage of using the existing resin as it is, but the improvement of the dyeability was insignificant. At the same temperature than normal polyester, it was possible to dye deeper and dye at the lower temperature for dyeing the same color, but it was not able to freely dye at normal pressure, but did not reach the level that was dark and clear. As a result, it was concluded that modification of the polyester resin is necessary for atmospheric pressure salting of polyester high temperature and high pressure dyeing.

As described above, the modification of the polyester resin may result in the improvement of the dyeability, but since other physical properties are significantly changed, it is common that the conventional polyester cannot be used as it is. This is because low strength, low heat resistance and the like serve as another disadvantage of the modified polyester.

Therefore, the present invention is to provide a polyester blanket capable of printing to solve all the problems of the prior art as described above, having a clear and diverse pattern while maintaining the basic physical properties of the polyester.

Therefore, according to the present invention, a modified polyester resin having an IV value of 0.4 to 0.65 synthesized from terephthalic acid or dimethyl terephthalate, ethylene glycol, a sulfoisophthalic acid compound, and a polyalkylene glycol is melt-spun and combustible twisted yarn as a combustible twisted yarn. Polyethylene terephthalate false-twist yarn is provided, which is 0.5-8%, 2-20% of total shrinkage, and 5-30 micrometers of bending thickness.

According to the present invention, there is provided a polyethylene terephthalate printing blanket, which is knitted and printed using a polyethylene terephthalate false twist yarn as a pile yarn and a low shrinkage polyethylene terephthalate yarn as a ground yarn.

Hereinafter, the present invention will be described in more detail.

The polyester resin which is a raw material of polyethylene terephthalate false twisted yarn in the present invention is used to polymerize with terephthalic acid or dimethyl terephthalate and ethylene glycol as a raw material, and the metal sulfonate compound and polyalkylene glycol polymer are contained during the polymerization process. Is characteristic.

 In the present invention, 1.0 to 4.0% by weight of the metal sulfonate compound is contained in any one of the esterification reaction or the initial stage of the polycondensation, and 0.4 to 8.0% by weight of polyalkylene glycol is added before the start of the polycondensation reaction. It is preferable to contain and synthesize | combine a polyester resin.

The content of the sulfoisophthalic acid-based compound is to form a salt deposit that can be combined with a basic dye in conventional polyester, and the polyester modified by the content of the sulfoisophthalic acid-based compound is more vivid by the basic dye. Durable dyeing is possible. In addition, since the sulfoisophthalic acid-based compound is an additive material rather than a main raw material of ordinary polyester, it is accompanied by a change in crystal structure and crystallinity of the fiber molecule, so that dyeing at a lower temperature than dyeing with a general dispersion dye is possible. To lose.

The content of the sulfoisophthalic acid compound contained in the polyester resin of the present invention is preferably 1.0 to 4.0% by weight for proper dyeing and good yarn manufacturing processability. More preferably 2.0 to 3.0% by weight is good. The sulfoisophthalic acid compound may be any one selected from the group consisting of 5-sodiumsulfodimethylisophthalate, 5-sodiumsulfoisophthalic acid, or 5-sodiumsulfobisbetahydroxyethylisophthalate and derivatives thereof. If the content is less than 1.0%, the lack of dyeing seats to which the basic dye will bind prevents the bright and dark color dyeing suitable for the blanket. In other words, when the sulfoisophthalic acid-based compound is less than 1.0%, since the absolute number of dyeing seats is insufficient, dyeability by basic dyes may be used regardless of other methods such as dyeing at high temperature and high pressure or further modifying the resin. Means no improvement. When the content is more than 4.0%, not only the generation of adducts becomes remarkable and it is difficult to increase the degree of polymerization from the polymerization reaction step of the resin, but also the produced resin significantly impairs the processability in the spinning process for making the fiber, thereby reducing the strength and It causes the problem of color damage. The problem in the weaving process is the occurrence of many trimmings during the weaving process and a decrease in the yield of the finished product, such as a sudden pressure increase due to the accumulation of foreign matter in the filter of the spinning pack and the frequent device replacement.

However, the rapid dyeing, such as atmospheric pressure printing is difficult only by containing 1.0 to 4.0% by weight of the sulfoisophthalic acid compound. The more the content of the metal sulfonate compound is added, the lower the dyeable temperature becomes, so that dyeing is possible at a temperature lower than the normal polyester dyeing temperature of 130 ° C, but dyeing at normal pressure below 100 ° C is difficult. At most it can be dyed only under high pressure around 115 ~ 120 ℃. Therefore, in order to enable printing at atmospheric pressure, the use of another additional component is inevitable, the most suitable being polyalkylene glycol (PAG).

In the present invention, the content of the polyalkylene glycol contained for further improving the dyeability is closely related to the content of the sulfoisophthalic acid compound. In this invention, it is preferable to contain 0.4 to 8.0 weight% of polyalkylene glycol after completion | finish of ester reaction, and to start polycondensation reaction, More preferably, it is preferable to contain in content of following formula (1).

1.2-(0.2 × M content) ≤ P content ≤ 10-(2.0 × M content) ------ Equation 1)

      (In Formula 1, M content is the content of sulfoisophthalic acid compound, and P content means the content of polyalkylene glycol.)

For example, when the content of the sulfoisophthalic acid compound is 1% by weight, in order to allow dyes to rapidly penetrate into the dyeing seat of relatively small basic dyes, the polyalkylene glycol content is increased to increase the dye content. It is necessary to loosen the crystal structure and to adjust the crystal size and crystallinity. On the other hand, when the content of the sulfoisophthalic acid compound is 4% by weight, it is advantageous in terms of dyeability because there are many dyeing seats that can be dyed, but if too much polyalkylene glycol is contained therein to increase the dyeing speed, The physical properties of the resin are significantly poor and the fairness of fiber manufacturing becomes very poor. Therefore, only a small amount of polyalkylene glycol should be contained to maintain the physical properties of the resin.

If the sulfoisophthalic acid compound and the polyalkylene glycol are both contained in an excessive amount, the strength and thermal stability of the resin itself are remarkably reduced, and the yarn made using the same is easily cured or broken even with very little heat.

For example, if the content of the sulfoisophthalic acid compound is 1.0%, the content of the appropriate polyalkylene glycol is 1.0 to 8.0%, and the content of the sulfoisophthalic acid compound is 4.0%. The content of the appropriate polyalkylene glycol is 0.4 to 2.0%.

Preferably, the polyalkylene glycol has a number average molecular weight of 500 to 4,000, but when the glycol polymer contains a molecular weight that is too large, the number of glycols that participate in the copolymerization is too small to effectively modify the crystal structure of the polyester fiber polymer. There is this.

The polyalkylene glycol is preferably at least one selected from the group consisting of polyethylene glycol, polypropylene glycol, polytetramethylene glycol, 1,4-cyclonucleic acid dimethylene glycol.

The sulfoisophthalic acid compound may be added at any stage of the ester reaction stage or the initial stage of the polycondensation. The polyalkylene glycol is preferably added after the completion of the ester reaction before the start of the polycondensation reaction. Due to its weak heat, special care should be taken in the degree of vacuum and temperature control.

The modified polyester resin prepared by the above method is preferably managed in an intrinsic viscosity of 0.4 ~ 0.65, the content of diethylene glycol contained in the resin is 1.0 ~ 10.0 mol% or less in order to be spun into the fiber for the blanket. Diethylene glycol may be generated naturally during the reaction or may be optionally added to the resin. This is often a kind of by-product, but this is also a factor affecting the dyeability, so management in the polymerization process is necessary. More preferably, about 3 to 8 mol% is good but should not exceed 10.0 mol%. If it is more than 10.0 mol%, another byproduct is more likely to occur, and a color value problem of yellowing of the resin occurs. In addition, when the content of diethylene glycol is controlled to less than 1.0 mol%, there is a problem in that the dyeing effect of the resin modified with polyalkylene glycol is not properly expressed, and in fact, it is natural in general batch polymerization or continuous polymerization. It is also almost impossible to control the amount of diethylene glycol generated by less than 1.0 mol%.

It is preferable that the intrinsic viscosity of resin is 0.4-0.65. If the intrinsic viscosity is less than 0.4, the molecular weight of the polymer is too low to be vulnerable to heat and poor in spin processability, and it cannot be used to make the yarn more than the level required for the blanket manufacturing (2.0 g / d). Will become unsuitable for Low strength frequently causes trimming during weaving, causes poor weaving processability, increases weight loss due to brushing and hair removal, and tears on the blanket surface, making it impossible to form a good appearance.

When the intrinsic viscosity exceeds 0.65, the strength of the fiber increases, but the distribution of the molecular weight of the resin increases and the possibility of yellowing of the yellowing of the color increases. Furthermore, the viscosity of polyester resins that are too high increases the initial tensile modulus of the yarns made from them, making them yarns of stiff hand, making them unsuitable for blanket piles.

 Polyester yarn for manufacturing the printing blanket of the present invention is a long-fiber combustible yarn that was burned and heat-treated after spinning the polyester resin with a spinning machine, the crimping rate (TC) 0.5 ~ 8.0%, the total shrinkage (TS) 2.0 ~ 20.0 It is preferable to use false twist yarns having a% and a bending thickness Dp of 5 to 30 m.

The crimp rate indicates the degree of twisting or stretching of the crimp formed by the combustible, and the total shrinkage means the rate of change in length before and after the heat treatment when the twisted yarn is heat treated. The measuring method is as follows.

First, the sample yarn to be measured is wound on a reel. Reel-wound yarns have a total thickness of 3000 ± 300 denier. Attach a weight of 5g (weight a) and measure the length accurately (L0). Heat it for 20 minutes in boiling water with additional water. After the heat treatment, the yarn is taken out of the water and dried for 24 hours at standard conditions. After the drying is completed, the length is again measured accurately (L1) in the state where a weight is attached, and an additional weight b corresponding to 600 g is added thereto to measure the length (L2). Using these measurements, the following crimp rate and total shrinkage rate are calculated.

Crimp Ratio (%) = (L2-L1) / L0 × 100

Total shrinkage (%) = (L0-L1) / L0 × 100

    The bending thickness Dp is the thickness in the direction in which the fiber is bent, and means the thickness of the fiber cross section as shown in b of FIG. 2, when the cross section of the fiber is in contact with two parallel lines, the distance between the parallel lines is the shortest. For example, in the case of irregular fiber cross-sections as shown in Figs. 1 and 2, the thickness depends on the direction. Since the thickness a of FIG. 1 is larger than the thickness b of FIG. 2, the resistance to external force is greater so that the thickness a is hardly bent in the thickness direction, but is easily bent in the relatively b direction. In other words, the bending of the pile is bent in the direction of the shortest thickness of the fiber cross section, which is defined as the bending thickness.

    The bending thickness Dp is important because it is this thickness that determines the bending performance and feel of the pile when forming the pile using fibers. Even if the fiber of the same Denia, the bending thickness is different depending on the cross section, the degree of bending varies depending on the shape of the cross section.

For example, if you compare a circular section 4 denia with a flat section 4 denia at an aspect ratio of 1: 3, the flatness and feel of the pile are much smoother and bendable even with the same 4 denia. The reason is that the circular section 4 denia has a diameter of about 20 µm, but the flat section 4 denia having an aspect ratio of 1: 3 has different thicknesses of about 10 µm in width and 30 µm in length, and external force is applied. When losing, the pile is bent in the direction of a thickness of 10 μm in width. That is, in the case of the circular cross section, the bending thickness is 20 μm, but in the case of the flat cross section of 10 μm, since only half of the circular cross section is bent, it has a much better bent and soft touch. Such a phenomenon can be more easily understood by imagining a bent form such as a cross section or hollow section. In other words, the bending occurs in one direction having the smallest thickness among the various directions of the cross section, and the portion that resists the bending is as much as the shortest distance thickness (bending thickness, Dp) of two parallel lines circumscribed.

In the present invention, the twisted yarn may be any one or two or more mixed yarns of circular, cross, flat, triangular, and mesoporous, having different volume, feel and appearance according to each cross section, and they are mixed Allows for a unique appearance that cannot be realized with one type of yarn.

The effect of using the polyester false twist yarn of the present invention as a material of the blanket is improved weaving processability, work environment improvement, weight loss and hair fall prevention, etc. It is also much faster and easier to develop a small amount of special material.

The polyester false twisted yarn can be made of any of partially drawn yarn (aka POY) or drawn yarn (aka, SDY or FDY). However, when using partially drawn yarns, the strength is lower than that of drawn yarns, so care must be taken in setting conditions such as heat treatment temperature during burning. There is a disadvantage.

The crimp rate (TC) of the polyethylene terephthalate false twisted yarn for blankets of the present invention is preferably in the range of 0.5% to 8.0%. A typical crimp rate (TC) of conventional polyester twisted yarn is on the order of 10-20%, but for blankets it requires a much lower crimp rate of 8.0% or less. The reason for this is that conventional polyester twisted yarns with high crimping rate, when used as piles, are difficult to form neat piles even after raising and depilating due to high crimping rate, resulting in uneven and uneven surface of the blanket. Also, piles tend to agglomerate, and the uneven surface reduces the value of printing, making it difficult to produce colorful and luxurious blankets. On the contrary, simple stretch yarn without flammable yarn or twisted yarn with a crimp rate of less than 0.5% has a remarkably poor volume of piles, which does not form a rich appearance of the blanket, and even poor thermal insulation to be provided as a blanket.

The total shrinkage rate (TS) is preferably at a level of 2.0 to 20.0%. If the total shrinkage ratio (TS) is more than 20.0%, non-uniform shrinkage is likely to occur during the heating or drying of the blanket, and the pile is stiff due to shrinkage and hardening of the fiber. Because of this, overshrinkage or non-uniform shrinkage of more than 20% adversely affects the appearance of a good blanket. If the total shrinkage is less than 2.0%, the shrinkage is so small that it is impossible to express the bulkiness, warmth and soft touch peculiar to the false twisted yarn. In addition, the shrinkage process provides a driving force that can be a single file independently of each strand of each fiber, so that it can be used as a blanket material yarn, the volume must be revived by shrinking more than a certain level when it is heated. This allows for the creation of a softer and more luxurious file with a richer volume.

It is preferable that the bending thickness Dp is 5 to 30 µm, and the pile having a thickness exceeding 30 µm is not only too stiff, but also makes it difficult to make a blanket having a sense of volume and insulation. If the thickness is less than 5 μm, the pile's granularity is remarkably low, which makes it difficult to implement the pile, making it difficult to realize an even surface.

 Modified polyester twisted yarn made according to the above-described method can be made into a printing blanket according to a conventional acrylic mink blanket production method. The polyethylene terephthalate printing blanket of the present invention can be prepared by mixing two or more groups of polyethylene terephthalate false twisted yarns having different cross sections as pile yarns. In addition, any one or more of crimping rate, total shrinkage rate, or bending thickness may be prepared by mixing two or more groups of polyethylene terephthalate false twisted yarns as pile yarns.

 Brief description of the blanket manufacturing step by step as follows.

 First of all, the size and characteristics of the desired blanket are designed. Thereby, the type of loom is selected, and the type and configuration of the yarn are also determined. Generally, as a ground yarn (back yarn) of the blanket, low shrinkage general polyester is used, and an acrylic yarn is used for the pile. The modified polyester of the present invention is intended to replace the acrylic yarn used in this pile portion. The advantage of using modified polyester is that it is easy to change the properties of cross section, fineness and twisted yarn because it is between filaments. If you want to maximize the volume, you can use a cross section or other deformed cross section yarn. If you want to increase, it is better to use hollow section yarn or relatively high crimping yarn. If you want to increase the soft touch, use a yarn of flat cross section, and if you want to increase the gloss of the blanket surface, use a triangular cross section or flat cross section. In addition, in order to obtain surface glossiness, bulkiness, and thermal insulation at the same time, it is also possible to use a twisted yarn of a relatively low crimp rate flat or triangular cross section and a twisted yarn of a relatively high hollow or cross section. After determining the characteristics and size of the desired blanket, we go to weaving.

Second, a ground yarn (back yarn) and a pile yarn are knitted at the same time using a double-lassel knitting machine. Weave the back side with ground yarns on both sides and pile yarns are connected between the two back sides. At the end of knitting or at the same time knitting, cut the center of the pile yarn connecting the two back sides with a knife. This way, one side of the knit fabric would be a face made of normal polyester back yarn and the other face would be a pile made of modified polyester twisted yarn.

Third, the fabric is printed on the pile while flowing the knitted fabric so that the pile face up. Since the printing is a continuous open type, the dyeing is done at atmospheric pressure. In order to enable printing at ordinary pressure, the modification of the polyester resin as described above was necessary. The type of picture and color that can be expressed depends on the number of printing plates. In order to express more colorful pictures and many kinds of colors, a large number of printing plates are required.

Fourthly, the knitted single-sided knitted fabric passes through the steam bath to fix the dyeing. Although steam is used, it is also a continuous open type. In a steamer, the speed at which the knitted fabric passes, the temperature of the steam and the internal structure are important. In particular, the internal structure should be designed in such a way as to evenly stain and prevent contamination of the entire knitted fabric.

Fifth, the knitted fabric in which the dye is fixed to the pile is washed and dried. In this step, excess dye on the knitted fabric is desorbed, washed and dried. During washing, the processing agent such as softening agent is treated to help the process such as raising in the future and to improve the quality of the pile.

Sixth, the dried knitted fabric is printed on only one side, and the other side is in the state of the ground yarn (back). To make this a double-sided pile, you have to repeat 'napping-hamo-policia-sharing' both front and back. If the one-sided file is changed to the two-sided file through this step, the characteristics of the printing blanket will come to life. Repeated brushing two or three times in succession and another two or three times the hair loss, and the previous step 'napping-hamo-policia-sharing' may be repeated two or more times in seven to eight times. Brushing is the process of straightening hair, hair is combing, and polish is used to smooth the surface, and sharing is used to keep the file even. In particular, raising the ground slope (back face) is also known as firing, which is to make the pile surface without raising the pile. In other words, if you scrape the back with a brush, the cloth in the brush will pull the file that was originally on the front to the back to form a new file. At this time, since the pile yarns are already dyed, the piles formed on the rear form a picture or a pattern and a mirror image on the front side.

In the sixth step, normal acrylic short fibers result in weight loss of as little as 8% to as much as 20%. In addition, a lot of dust is generated during the raising and depilation process, the short fibers are torn off, and the working environment is bad. However, when the modified polyester twisted yarn is used, the weight loss occurs only 2 to 3%, so there are no problems caused by this.

Seventh, when the shape as a blanket is made as described above, the blanket is completed by cutting to a certain size according to the pattern of the printed picture to finish the rim.

In the following examples, non-limiting examples of the method for producing a polyester printing blanket according to the present invention are given.

Example 1

While polymerizing a polyester resin using dimethyl terephthalate and ethylene glycol as raw materials, 3% by weight of 5-sodiumsulfodimethylisophthalate was contained at the beginning of the ester reaction and 3% by weight of polyethylene glycol (PEG-1000) having a number average molecular weight of 1000 was stored. In the initial stage of the polymerization, a polyester resin having a diethylene glycol content of 2.5 mol% and an intrinsic viscosity of 6.0 was prepared. The resin was melt spun at a spinning temperature of 290 ° C. and a spinning speed of 3000 m / min to form partially drawn yarns (POY) having a bending thickness of 14 μm in circular cross sections. Partially stretched yarn was twisted in a belt burner, processed into a twisted yarn with a crimp rate of 4% and a total shrinkage rate of 9%, and then used as a pile material for a Raschel knitting machine. The pile portion of the one-sided pile cut in the middle of the knitted fabric was printed with cationic dye using a printing machine. The steam was steamed for 15 minutes with 105 ° C. steam and washed with water and dried. One-sided pile was made into a double-sided pile by brushing, and brushed-hamo-policia-scharing made a blanket four times in total.

Example 2

The cross section of the yarn is 50:50 ratio of the hollow section to the flat section, the hollow section has a bending thickness of 20 µm, the hollow ratio is 10%, the flat section has a aspect ratio of 1: 3 and the bending thickness is A blanket was prepared in the same manner as in Preparation Example 1, except that the thickness was 10 μm.

Example 3

  A blanket was manufactured in the same manner as in Example 1, except that the false twisted yarn having a crimp ratio of 1.2% and the shrinkage ratio of 3% and the false twisted yarn having a crimp ratio of 5% and 10% of shrinkage were used as 50:50. It was.

Comparative Example 1

The conventional polyester resin made using only dimethyl terephthalate and ethylene glycol as a raw material was spun at a rate of 3000 m / min at room temperature at 290 ° C to make 600 denier yarns composed of 300 filaments of circular cross section and combust them to have a crimp rate of 15%. In addition, they made false burns with a total shrinkage rate of 18%. This was made into a knitted fabric using a Raschel knitting machine, and then printed on the pile portion in which ordinary polyester twisted yarns were used, and then heated, washed, and dried.

Comparative Example 2

A blanket was prepared in the same manner as in Example 1, except that a resin having an intrinsic viscosity of 0.45 was prepared by containing 6% of sodium sulfodimethylisophthalate and 4% of polyethylene glycol in the polyester resin polymerization of Example 1. Was prepared.

Comparative Example 3

A blanket was prepared in the same manner as in Example 1 except that a resin having an intrinsic viscosity of 0.5 was prepared by containing 0.5% of sodium sulfodimethylisophthalate and 4% of polyethylene glycol in the polyester resin polymerization of Example 1. Was prepared.

[Comparative Example 4]

A blanket was prepared in the same manner as in Example 1 except that a resin having an intrinsic viscosity of 0.45 was prepared by containing 3.0% of 5-sodiumsulfodimethylisophthalate and 8% of polyethylene glycol in the polyester resin polymerization of Example 1. Was prepared.

[Comparative Example 5]

  A blanket was prepared in the same manner as in Example 1, except that the resin having an intrinsic viscosity of 0.38 was prepared in the polyester resin polymerization of Example 1.

Comparative Example 6

A blanket was prepared in the same manner as in Example 1, except that the resin having an intrinsic viscosity of 0.65 was prepared in the polyester resin polymerization of Example 1.

Comparative Example 7

Except for containing 6 mol% of diethylene glycol at the beginning of the polycondensation in the polymerization of the polyester resin of Example 1 and polymerization so that the content of diethylene glycol in the final resin is 12 mol% and In the same manner, a blanket was prepared.

Comparative Example 8

A blanket was manufactured in the same manner as in Example 1, except that a circular cross-section material yarn was used such that the bending thickness was 40 μm, the crimping rate was 5%, and the total shrinkage rate was 10%.

Comparative Example 9

A blanket was manufactured in the same manner as in the manufacturing method of Example 1, except that a circular cross-section material yarn was used such that the bending thickness was 1 μm, the crimping rate was 2%, and the total shrinkage rate was 5%.

Comparative Example 10

A blanket was prepared in the same manner as in Example 1, except that yarn was obtained by simple stretching without flamming to have a crimp rate of 0% and a shrinkage rate of 6%.

Comparative Example 11

A blanket was prepared in the same manner as in Example 1, except that a yarn with a crimp rate of 22% and a total shrinkage rate of 26% was used.

Table 1 shows the physical properties of the Examples and Comparative Examples.

division Radioactive Printing Heat resistance of file after steaming Pile surface of the finished blanket Blanket volume (warmth) Example 1 Good Good Good Good Good Example 2 Good Good Good Good Great Example 3 Good Good Good Good Great Comparative Example 1 Good Imprintable - Good Good Comparative Example 2 Spin Pack Filter Pressure Rise - - - - Comparative Example 3 Good Bad - - - Comparative Example 4 usually Good Hardening Tough feeling - Comparative Example 5 Fairness - Bad - - Comparative Example 6 Good Good Good Tough feeling - Comparative Example 7 Poor color (yellowing) - Bad Tough feeling - Comparative Example 8 Good Good Good File bunch Bad Comparative Example 9 Good Good Good Good Bad Comparative Example 10 Good Good Good Good Bad Comparative Example 11 Good Good Partial curing of files File bunch Great

As described above, according to the present invention, not only the existing acrylic printing blanket can be replaced by providing a printing blanket which was not manufactured by the existing polyester company, but also a new touch and performance blanket which was not made by the existing acrylic can be provided. Can be.

Claims (15)

Modified polyester resin having an IV value of 0.4 to 0.65 synthesized from terephthalic acid or dimethyl terephthalate, ethylene glycol, sulfoisophthalic acid-based compound and polyalkylene glycol is melt spun and combustible combustible yarn with a crimp rate of 0.5 to 8%, total Polyethylene terephthalate false twist yarn characterized by having a shrinkage of 2 to 20% and a bending thickness of 5 to 30 µm. The polyethylene tere according to claim 1, wherein the sulfoisophthalic acid compound is included in an amount of 1 to 4% by weight in the modified polyester resin, and the polyalkylene glycol is included to satisfy the following Equation 1). Phthalate false twisted yarn. 1.2-(0.2 × M content) ≤ P content ≤ 10-(2.0 × M content) ------ Equation 1)       (In Formula 1, M content is the content of sulfoisophthalic acid compound, and P content means the content of polyalkylene glycol.) 3. The sulfoisophthalic acid compound according to claim 1 or 2, wherein the sulfoisophthalic acid compound is composed of 5-sodium sulfodimethylisophthalate, 5-sodium sulfoisophthalic acid or 5-sodium sulfobetabetahydroxyethyl isophthalate and derivatives thereof. Polyethylene terephthalate false twist yarn, characterized in that one or a mixture thereof selected from the group. The method of claim 1 or 2, wherein the polyalkylene glycol is one or a mixture thereof selected from the group consisting of polyethylene glycol, polypropylene glycol, polytetramethylene glycol, 1,4-cyclonucleic acid dimethylene glycol Polyethylene terephthalate false twisted yarn. The polyethylene terephthalate twisted yarn according to claim 1, wherein the modified polyester resin has a diethylene glycol content of 1 to 10 mol%. The polyethylene terephthalate false twisted yarn according to any one of claims 1 to 5, wherein the cross section of the polyethylene terephthalate false twisted yarn is any one of circular, cross, flat, triangular, and hollow shapes. Polyethylene terephthalate printing blanket, which is knitted and printed using polyethylene terephthalate twisted yarn as pile yarn and low shrinkage polyethylene terephthalate yarn as ground yarn. 8. The modified polyester resin of claim 7, wherein the polyethylene terephthalate false-twist yarn is melt-spun and flammable with an IV value of 0.4 to 0.65 synthesized from terephthalic acid or dimethyl terephthalate, ethylene glycol, sulfoisophthalic acid compound, and polyalkylene glycol. Polyethylene terephthalate printing blanket, characterized by a crimped rate of 0.5 to 8%, a total shrinkage rate of 2 to 20%, and a bending thickness of 5 to 30 µm. The polyethylene tere according to claim 8, wherein the sulfoisophthalic acid compound is included in an amount of 1 to 4% by weight in the modified polyester resin, and the polyalkylene glycol is included to satisfy the following Equation 1). Phthalate printing. 1.2-(0.2 × M content) ≤ P content ≤ 10-(2.0 × M content) ------ Equation 1)       (In Formula 1, M content is the content of sulfoisophthalic acid compound, and P content means the content of polyalkylene glycol.) The method of claim 8 or 9, wherein the sulfoisophthalic acid compound is composed of 5-sodiumsulfodimethylisophthalate, 5-sodiumsulfoisophthalic acid or 5-sodiumsulfobisbetahydroxyethylisophthalate and derivatives thereof. Polyethylene terephthalate printing blanket, characterized in that one or a mixture thereof selected from the group. The method according to claim 8 or 9, wherein the polyalkylene glycol is one or a mixture thereof selected from the group consisting of polyethylene glycol, polypropylene glycol, polytetramethylene glycol, 1,4-cyclonucleic acid dimethylene glycol. Polyethylene terephthalate printing blanket. The polyethylene terephthalate printing blanket according to claim 8, wherein the modified polyester resin has a diethylene glycol content of 1 to 10 mol%. 8. The polyethylene terephthalate printing blanket according to claim 7, wherein the cross section of the polyethylene terephthalate false twisted yarn is any one of circular, cross, flat, triangular and hollow shapes. The polyethylene terephthalate printing blanket according to claim 13, wherein two or more groups of false twisted yarns having different cross sections are used in the cross section of the polyethylene terephthalate false twisted yarn. The polyethylene terephthalate printing blanket according to claim 8, wherein at least one of the crimping ratio, the total shrinkage ratio, and the bending thickness is used by mixing two or more groups of false twisted yarns different from each other.

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