JPH1121720A - Polyester-based self-elongating yarn having heat retaining property, its combined filament yarn and fabric - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject yarn having abilities of absorbing light energy and converting into heat energy and irradiating it and of reflecting heat energy irradiated from a human body, providing a fabric excellent in heat retaining properties, by adding fine powder of a carbide of a specific transition metal to a polyester-based yarn. SOLUTION: This polyester based yarn is a polyester-based yarn containing fine powder of a carbide of a transition metal belonging to the group TV of the periodic table and has self-elongating properties to elongate by heat treating the yarn. A combined filament yarn is obtained from 20-80 wt.% of the self- elongating yarn having heat retaining properties and 80-20 wt.% of a heat shrinkable yarn.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polyester-based heat-retaining self-extending yarn containing a fine powder of a carbide of a transition metal belonging to Group IV of the periodic law, and to a mixed fiber and a fabric containing the yarn. .

[0002]

2. Description of the Related Art As one method for imparting heat retention to a woven or knitted fabric, a method using a batting air layer (dead air) having a three-layer structure in which a batting is inserted between a surface material and a lining is widely used. Have been. However, such a three-layered garment has the drawback that it is heavy and bulky, and free movement is hindered when worn. .

[0003] For this reason, a fiber that uniformly contains a carbide of a transition metal represented by zirconium carbide or the like absorbs solar energy and converts the absorbed energy into heat energy. Tokuhei 3
No. 9202). After knitting and weaving this fiber, the fabric obtained by performing a normal dyeing process has a heat retaining property, but since this fiber is heat shrinkable,
A wool-like soft and swelling texture could not be obtained.

[0004]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems, and provides a polyester-based heat-retaining self-extending yarn which is elongated by heat treatment and contains fine powder of a transition metal belonging to Group IV of the periodic law. It is a technical object to provide a mixed fiber including a yarn and a fabric having a swelling feeling and a fluff feeling, a wool-like soft feeling and heat retaining property using the mixed fiber. It is.

[0005]

Means for Solving the Problems The present inventors have made intensive studies to solve the above-mentioned problems, and as a result, have reached the present invention. That is, the present invention has the following configuration. (1) A polyester-based fiber containing a fine powder of a carbide of a transition metal belonging to Group IV of the periodic law, wherein the fiber has a self-extending property that is elongated by heat treatment. . (2) The polyester-based heat retaining self-extending yarn 20 according to the above (1).
Mixed yarn consisting of ~ 80 wt% and heat shrinkable yarn 80 ~ 20 wt%. (3) A fabric containing the mixed fiber yarn according to (2), wherein the proportion of the mixed fiber yarn in the fabric is 30% by weight or more, and the polyester-based heat insulating self-retaining material according to (1) in the fabric. The percentage of elongated yarn is
A fabric that is 20-80% by weight.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.

The polyester heat-insulating self-extending yarn of the present invention (hereinafter, abbreviated as a self-extending yarn) contains a fine powder of a transition metal belonging to Group IV of the periodic law and is elongated by heat treatment. This is a yarn having self-extensibility. Self-stretch yarn has a hot water shrinkage of 10% in boiling water
Hereinafter, it refers to a polyester multifilament yarn having a dry heat shrinkage of 0% or less in a dry heat at 180 ° C. Therefore, any polyester multifilament yarn having such self-extensibility can be applied to the present invention without any particular limitation.

[0008] The self-extended yarn of the present invention is obtained by adding a hot water treated yarn to 180
When the dry heat treatment is performed at a temperature of ° C., a yarn that further elongates itself is preferable. Thereby, if the woven or knitted fabric using the mixed fiber of the present invention is heat-processed, the difference in yarn length between the multifilament yarn having heat shrinkage and the self-extending yarn is further increased, and the bulkiness and softness are improved. It will be excellent. The hot water shrinkage and dry heat shrinkage of the self-extending yarn are not particularly limited, but if the self-extending property is too high, the woven or knitted fabric will have a feeling of flapping. -5%, dry heat shrinkage is-
A range of 2% to -10% is preferred.

The self-extending yarn contains a cyclic I
Examples of the fine powders of transition metal carbides belonging to Group V include zirconium carbide, hafnium carbide, titanium carbide, and the like.
It contains at least one or more.

The fine carbide powder used in the present invention absorbs light energy having a wavelength of 0.3 to 2 μm, which is a main component of sunlight, and converts and radiates the light energy to heat energy having a wavelength of 2 to 20 μm. And the wavelength of about 10 emitted from the human body
It has the ability to reflect heat energy of μm. The fiber containing the fine powder having such a capability absorbs sunlight and radiates it into clothes, reflects heat radiated from the human body, does not escape it to the outside, and has good heat retention. Things.

The average particle size of the fine carbide powder used in the present invention is preferably 5 μm or less, more preferably 1 μm or less. If the average particle size exceeds 5 μm, problems such as clogging of the filter medium and a decrease in spinnability due to yarn breakage occur in the spinning process, and even if spinning can be performed, problems such as yarn breakage in the stretching process occur. Is not preferred.

Here, the content of the carbonized fine powder of the transition metal contained in the self-extended yarn is preferably in the range of 0.2 to 20% by weight, and more preferably in the range of 1 to 10% based on the weight of the fiber. More preferred. Transition metal carbonized powder content of 20
If the amount exceeds 10% by weight, not only the effect of heat retention reaches saturation, but also the productivity of the fiber deteriorates, and furthermore, it becomes impossible to obtain a sufficiently high elongation in terms of yarn quality, which is not preferable. On the other hand, when the content of the transition metal carbide fine powder is less than 0.2% by weight, it is difficult to obtain a desired heat retaining property, which is not preferable.

As a method for incorporating the carbonized fine powder of the transition metal into the fiber, a method of directly mixing and spinning the raw material polymer, a method of manufacturing a master chip containing a high concentration in advance using a part of the raw material polymer, There is a method of spinning after diluting and adjusting this to a predetermined concentration during spinning.

The cross-sectional shape of the self-extended yarn is not particularly limited, but a hollow cross-section is preferable in order to provide excellent lightness and heat retention.

The method for producing the self-stretched yarn is not particularly limited. For example, after stretching a polyester highly oriented undrawn yarn containing carbonized fine powder of a transition metal obtained by high-speed spinning, it is relaxed at a high overfeed rate. Heat treatment or
Alternatively, it can be produced by performing a relaxation heat treatment at a high overfeed rate without stretching.

Next, the mixed yarn of the second invention and the fabric of the third invention will be described. The above-described self-extended yarn can be used alone depending on the application. However, the self-extended yarn is blended so that the self-extended yarn is 20 to 80% by weight and the heat-shrinkable yarn is 80 to 20% by weight. It is preferable to use it as a yarn.

As the heat-shrinkable yarn, thermoplastic fibers such as nylon and polyester fibers can be used, but polyester fibers which are the same material as the self-expanding yarns are used in order to prevent spots on the fabric. preferable. Also,
The dry heat shrinkage ratio of the heat-shrinkable yarn is 5 in order not to firmly bundle the mixed fiber even when subjected to heat treatment in dyeing or finishing.
%, Particularly preferably 1 to 4%. In addition, the difference in dry heat shrinkage between the heat-shrinkable yarn constituting the mixed fiber and the self-extended yarn is 6 to
10% is preferred.

When a fabric is produced using the mixed fiber of the present invention and heat-treated by dyeing finish or the like, as shown in FIG. 1, the self-extending yarn B exhibits a self-extensibility and irregular crimp while exhibiting the surface of the fabric. , And the heat-shrinkable yarn A shrinks, and is mainly located in the inner layer. As a result, an air layer is formed between the self-extending yarn and the heat-shrinkable yarn, so that the fabric can be given a swelling and soft feeling. Moreover, this air layer is present in the self-extending yarn.
It is heated by the heat retaining effect of the fine powder of the carbide of the transition metal belonging to the group, and an excellent heat retaining effect can be obtained. further,
Even when the sunlight dose is weak or at night, the fine particles of the transition metal belonging to Group IV of the periodic system reflect the thermal energy radiated from the human body, thereby warming the air layer, keeping the heat and insulation effect. Can be obtained.

When a fabric is produced using the mixed fiber of the present invention and heat treatment is performed by dyeing and the like, the arrangement of the filament group of the mixed fiber is such that the self-extended yarn B has a sheath side and a heat shrinkage as shown in FIG. Most of the yarn A is located on the core side. this is,
At the stage where the self-extending yarn B and the heat-shrinkable yarn A are mixed, even if the respective fibers are uniformly mixed or are not sufficiently mixed and are divided into two and localized, the self-extending yarn is The self-extensibility of the yarn and the heat shrinkage of the heat-shrinkable yarn mean that the self-extended yarn moves to the sheath side and the heat-shrinkable yarn moves to the core side.

However, the arrangement of the filament group of the mixed yarn after the heat treatment may be as shown in FIGS. 2 and 3 in addition to FIG. That is, in the example of FIG. 2, the distance between the same kind of filaments is always larger than the distance between the different kinds of filaments at the stage of the mixed fiber, so that the self-extended yarn B is not in the core side even if heat-treated. It is mixed with the heat-shrinkable yarn A. Further, in the example of FIG. 3, since the respective yarns are completely separated and bundled at the stage of the mixed fiber, even if the heat treatment is performed, the filament group of the self-extending yarn B and the heat-shrinkable yarn A These are separated into filament groups.

As described above, when the mixed yarn of the present invention is used as a fabric and heat-treated by dyeing or the like, as shown in FIG. 1, most of the self-extended yarn B has self-extensibility and irregular winding. It is considered that the self-extensible yarn B self-extensible and irregularly crimped appear as described below, although it is raised on the surface of the fabric while exhibiting shrinkage. That is, the self-stretched yarn of the present invention, as a supply yarn, a method of stretching a polyester-based low-oriented unstretched yarn containing a fine powder of a transition metal belonging to Group IV of the periodic law, a highly oriented unstretched yarn was stretched. It can be obtained by using a yarn or untreated highly oriented undrawn yarn and subjecting the supplied yarn to a relaxation heat treatment, but the crystal orientation of the supplied yarn becomes non-uniform due to the relaxation heat treatment, and as a result, constitutes a self-extended yarn The crystal orientation between the filaments is also non-uniform. Furthermore, the heat treatment in the dyeing finishing step causes the crystal orientation of the self-extended yarn to progress non-uniformly in the fiber axis direction, so that it is recognized that self-extensibility and irregular crimping appear.

For this reason, in a fabric obtained by using a yarn obtained by blending a self-expanding yarn and a heat-shrinkable yarn, the self-extending yarn mainly has a good texture, and the heat-shrinkable yarn has a good shape stability. Contribute. Here, the ratio of the self-extending yarn in the mixed fiber is 20% by weight.
If it is less than the value, the contribution of the self-extended yarn to the feeling and the heat retention are reduced. If it exceeds 80% by weight, the proportion of the heat-shrinkable yarn is reduced, and the form stability of the fabric is reduced.

In the case where a fabric is formed by using the mixed fiber of the present invention and other yarns, for the same reason as described above, the ratio of the mixed fiber in the fabric is not less than 30% by weight, and It is preferable that the ratio of the self-elongating yarn in the inside is 20 to 80% by weight. As a method of blending the self-extending yarn and the heat-shrinkable yarn, the two may be simply drawn together. And the like, and the like.

When knitting and weaving is performed using the mixed fiber obtained in this manner and then heat-treated by dyeing and the like, the self-extended yarn develops self-extensibility and irregular crimp to increase voids between filaments. While floating on the surface of the fabric, the fabric has a bulky feeling, a swelling feeling, a soft feeling and a heat retaining property.

Next, an example of a method for producing a mixed fiber comprising the polyester-based heat-retaining self-extending yarn and the heat-shrinkable yarn of the present invention will be described with reference to the drawings.

FIG. 4 is a schematic process diagram showing an example of a method for producing the mixed fiber of the present invention. In FIG. 4, a polyester highly oriented drawn yarn 1 obtained by a conventional method is drawn out from a spool 2, passed through a guide 3, subjected to heat drawing between a feed roller 4 and a delivery roller 6 by a heater 5, and heat shrinkable. It becomes yarn A. This heat drawing condition is to prevent the mixed yarn from being firmly bundled even if it is subjected to heat treatment for dyeing and finishing.
It is preferable to appropriately select the temperature and the draw ratio so that the heat shrinkage rate of the heat shrinkable yarn A is less than 5%.

On the other hand, it contains fine powder of a carbide of a transition metal belonging to Group IV of the periodic system, and is subjected to relaxation heat treatment to adjust the spinning speed, temperature, and cooling solidification point so as to exhibit heat extensibility. The drawn polyester highly oriented undrawn yarn 11 is
From the feed roller 14 and through the guide 13
A relaxation heat treatment is performed by the heater 15 between the roller 15 and the delivery roller 16 to form a self-extended yarn B.

The heat-shrinkable yarn A and the self-stretched yarn B that have exited the delivery rollers 6 and 16 are mixed and entangled with the delivery roller 8 by the air entanglement device 7 to form the mixed yarn of the present invention. It is wound up on the package 10 by the take-up device 9.

Next, FIG. 5 is a schematic process diagram showing another example of the production method of the mixed fiber of the present invention. In FIG. 5, a polyester highly oriented undrawn yarn 21 is drawn out of a spool 22, passed through a guide 23, and subjected to heat drawing between a feed roller 24 and a delivery roller 26 by a heater 25 to become a heat-shrinkable yarn A. . The heat stretching conditions are such that the heat-shrinkable yarn A has a heat shrinkage rate of less than 5% so that the mixed fiber is not strongly bundled even if it is subjected to heat treatment in dyeing or finishing. The magnification must be selected appropriately.

On the other hand, a polyester highly oriented undrawn yarn 31 containing fine powder of a carbide of a transition metal belonging to Group IV of the periodic system
Is pulled out of the spool 32, passes through the guide 33, and
Cold stretching or hot stretching using a heater 35 is performed between the feed roller 34 and the second feed roller 36 to apply a stretching strain to the yarn. Next, a non-uniform shrink heat treatment at a high speed under a high relaxation rate is performed by a heater 37 between the second feed roller 36 and the delivery roller 38, and the self-extended yarn B is obtained.

The heat-shrinkable yarn A and the self-extended yarn B that have exited the delivery rollers 26 and 38 are mixed and entangled between the delivery rollers 28 by the air entanglement device 27 and packaged by the winding device 29.
Winded up to 30.

As the air confounder used above, an air jet nozzle known as a known interlacer nozzle or Taslan nozzle can be used.

[0033]

Next, the present invention will be described in detail with reference to examples. In addition, evaluation of the heat retention of the yarn in the examples was performed by the following method. In a room with a temperature of 20 ° C. and a humidity of 65% in a high-temperature and high-humidity room, a 100 W incandescent power supply for photography was used as an energy source, a light was irradiated to the sample for 10 minutes, and then the light was turned off and left for 5 minutes. At this time, the surface temperature of the sample before the light irradiation, 10 minutes after the light irradiation, and 5 minutes after the light was turned off was measured by a thermoviewer JTG-4200 (Infrared sensor manufactured by JEOL Ltd.).

Example 1 As a supply yarn (yarn 1) for heat-shrinkable yarn A, a polyethylene terephthalate (PET) highly oriented undrawn yarn 70d / 24f obtained by a conventional method was used. Also, 95 parts by weight of PET having a relative viscosity of 1.38 measured at a concentration of 0.5 g / dl and a temperature of 25 ° C. in a mixed solution of an equal weight of phenol and tetrachloroethane,
3100m is obtained by uniformly melting and mixing 5 parts by weight of zirconium carbide (fine powder of transition metal carbide) having an average particle size of 0.6 μm.
A highly oriented undrawn yarn of 75d / 24f obtained by spinning at a speed of / min was used as a supply yarn (yarn 11) for self-extended yarn B.

The above-described yarn 1 and yarn 11 are used as supply yarns,
According to the process in FIG. 4, the self-extended yarn B of the present invention and the mixed yarn were produced. At this time, the non-contact heater temperature 285
The film was subjected to thermal stretching at 1.4 ° C., a stretching ratio of 1.4 times, and a delivery roller speed of 600 m / min to obtain a heat-shrinkable yarn A having a boiling water shrinkage of 2.5% and a dry heat shrinkage of 4.5%. On the other hand, the yarn 11 has a non-contact heater temperature of 425 ° C, a relaxation rate of 20.0%, and a delivery roller speed of 600 m.
/ Min heat treatment, boiling water shrinkage -2.5%, 180 ℃
A self-extended yarn B having a heat extensibility of -4.5% was obtained. The relaxation rate (%) was calculated by multiplying the value obtained by dividing the difference between the supply speed and the take-up speed by the take-up speed by 100.

Next, the yarn A and the yarn B obtained above are obtained.
Was subjected to confounding treatment using a commercially available interlacer (manufactured by Heberline) at a relaxation rate of 2.0% and a pressure of 3.0 kg / cm ² ,
A mixed fiber of 150d / 48f was obtained. The yarn obtained by twisting the obtained mixed yarn at a twist number (Z) of 500 T / M is used for the warp and the weft,
A plain woven fabric having a warp density of 104 yarns / 2.54 cm and a weft yarn density of 62 yarns / 2.54 cm was woven, and subjected to a conventional dyeing finish using a disperse dye. The obtained woven fabric had a feeling of swelling and fluff, and had a wool-like soft feel and excellent resilience. In addition, Table 1 shows the measurement results of the heat retention of the woven fabric and the woven fabric composed of the mixed yarns of Example 2 and Comparative Examples 1 and 2 described below.

[0037]

[Table 1]

As apparent from Table 1, the woven fabric of Example 1 was excellent in heat retention.

Example 2 As a supply yarn (21) for heat-shrinkable yarn A, a cationically dyeable PET highly oriented undrawn yarn 80d / 24f obtained by copolymerizing 1.5% by mole of 5-sodium sulfoisophthalic acid as an acid component. Was used. Also, 90 parts by weight of PET having a relative viscosity of 1.38 measured at a concentration of 0.5 g / dl and a temperature of 25 ° C. in a mixed solution of phenol and tetrachloroethane in an equal weight, and zirconium carbide having an average particle diameter of 0.6 μm (fine powder of transition metal carbonized) A 75d / 24f highly oriented undrawn yarn obtained by spinning at a speed of 3100 m / min a material obtained by uniformly melting and mixing 10 parts by weight was used as a supply yarn (yarn 31) for self-extended yarn B. .

The above-described yarns 21 and 31 are used as supply yarns,
According to the process of FIG. 5, the self-extended yarn B of the present invention and the mixed yarn were produced. At that time, the non-contact heater temperature 300
The film was subjected to thermal stretching at 1.3 ° C., a stretching ratio of 1.3 times, and a delivery roller speed of 600 m / min to obtain a heat-shrinkable yarn A having a boiling water shrinkage of 1.5% and a dry heat shrinkage of 2.5%. On the other hand, the yarn length 31 has a heater length of 300
mm non-contact heater, heater temperature 200 ° C, draw ratio
Heat treatment is performed so that the heat reception becomes non-uniform at 1.1 times, then the non-contact heater temperature is 450 ° C, the relaxation rate is 30%, and the take-off speed is 6
Heat treated at 00m / min, shrinkage ratio of boiling water -4.5%, 180 ° C
A self-extended yarn B having a heat extensibility of -6.5% in dry heat shrinkage was obtained.

Next, the yarn A and the yarn B obtained above were subjected to a relaxation ratio using an interlacer (manufactured by DuPont).
A confounding treatment was performed at 2.1% and a pressure of 3.0 kg / cm ² to obtain a 155d / 48f mixed fiber. The number of twists (Z) is 1000 T / M
Used for warp and weft, with a warp density of 106 yarns /
The fabric was woven into a plain woven fabric having a density of 2.54 cm and a weft density of 62 yarns / 2.54 cm, and then subjected to alkali weight reduction at a weight loss rate of 13%, followed by ordinary dyeing and finishing with a disperse dye. The resulting woven fabric has a fluffy feeling, a slimy feeling, is bulky and has a bulge,
Moreover, it was soft, and had a wool-like feeling with a natural spot feeling due to uneven thickness and excellent heat retention.

Comparative Example 1 The self-extended yarn B had a hot water shrinkage of 4.5% and a dry heat shrinkage of 8.0.
%, A mixed fiber was obtained in the same manner as in Example 1, and the twisted yarn was used for the warp and the weft, woven into a plain woven fabric, and subjected to a conventional dyeing finish using a disperse dye. The obtained woven fabric had a certain degree of heat retention, but became paper-like, and lacked a swelling feeling, a soft feeling, and a light feeling.

COMPARATIVE EXAMPLE 2 The self-extending yarn B did not contain zirconium carbide (fine powder of transition metal carbonized), and the hot water shrinkage was changed to -4.0% and the dry heat shrinkage was changed to -6.0%. After obtaining a mixed fiber in the same manner as in 1, the twisted yarn was used for the warp and the weft, woven into a plain woven fabric, and subjected to ordinary dyeing and finishing with a disperse dye. The obtained woven fabric had a swelling feeling, a fluff feeling, and a light feeling, and had a wool-like soft feeling, but was insufficient in heat retention.

[0044]

The heat-retaining self-extending yarn of the present invention has the ability to elongate by heat treatment, and to absorb light energy by the contained transition metal carbonized fine powder, convert the light energy into heat energy, and emit the same. And, since it has the ability to reflect the heat energy radiated from the human body, if it is knitted and woven using this self-extended yarn and the heat-shrinkable yarn mixed yarn, it does not have the conventional self-extensibility. In addition to the excellent heat retention when using a heat-retaining yarn, the heat-retaining yarn develops self-extensibility and irregular crimp, so it has a feeling of swelling and fluff, and has a wool-like softness. A fabric having a feeling can be obtained. Further, in the fabric of the present invention, the air layer formed between the heat-retaining self-extending yarn and the heat-shrinkable yarn is warmed by the heat-retaining effect of the transition metal carbide fine powder, so that an excellent heat-retaining effect can be obtained. Can be reduced,
Even in the nighttime, the transition metal carbide fine powder reflects the heat energy radiated from the human body, so that the air layer is warmed and the heat retention and the heat insulating effect can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view showing a main state of a state after heat treatment of a mixed fiber comprising a heat-retaining self-extending yarn and a heat-shrinkable yarn of the present invention.

FIG. 2 is a schematic cross-sectional view showing another state after heat-treating a mixed fiber comprising a heat-retaining self-extending yarn and a heat-shrinkable yarn of the present invention.

FIG. 3 is a schematic cross-sectional view showing still another state after heat-treating a mixed fiber comprising a heat-retaining self-extending yarn and a heat-shrinkable yarn of the present invention.

FIG. 4 is a schematic process chart showing an example of a method for producing a mixed fiber comprising a heat-retaining self-extending yarn and a heat-shrinkable yarn of the present invention.

FIG. 5 is a schematic process diagram showing another example of a method for producing a mixed fiber comprising a heat-retaining self-extending yarn and a heat-shrinkable yarn of the present invention.

[Explanation of symbols]

 A heat shrinkable yarn B heat insulating self-extending yarn

Claims (3)

[Claims] 1. A polyester-based fiber containing a fine powder of a carbide of a transition metal belonging to Group IV of the periodic system, wherein the fiber has a self-extensibility that is elongated by heat treatment. Extended yarn. 2. A mixed fiber comprising 20 to 80% by weight of the polyester-based heat-retaining self-extending yarn according to claim 1 and 80 to 20% by weight of a heat-shrinkable yarn. 3. A polyester fabric comprising the mixed yarn according to claim 2, wherein the ratio of the mixed yarn in the fabric is 30% by weight or more, and the polyester-based heat insulating self-insulating material according to claim 1 in the fabric. A fabric in which the proportion of elongated yarn is from 20 to 80% by weight.