Patent Description:
Under a trend of globalization, textile industry faces strong pressure due to competition. Textile traders must constantly develop new technologies and diversified products in order to face global competition.

In recent years, due to greenhouse effect and global warming, the average air temperature has continued to rise. Facing the increasingly hot climate, various shading fabrics focus more on light blocking and heat reflection in order to enhance its thermal insulation effect and achieve protection. In addition, since dark-colored fabrics are current fashion trends, how to effectively improve the thermal insulation of the fabrics, especially the thermal insulation of the dark-colored fabrics, has currently become a rather important issue.

<CIT> discloses fibers, especially black, brown or gray fibers, comprising IR-transparent colorants for use in heat management or for production of textiles or fabrics.

In <CIT> is disclosed a heat-reflection fabric which is formed by adopting and weaving yarn with a heat-reflection function, wherein the yarn is prepared by adding heat-reflection particles during spinning, the heat-reflection particles are the mixture of nanoscale titanium dioxide, aluminum oxide, zinc oxide and indium tin oxide.

<CIT> is directed to provide a spun-dyed master batch capable of producing an article such as a spun-dyed fiber, which is excellent in light resistance and brightness and has a neutral bluish gray color tone, without using an organic pigment in combination. The spun-dyed master batch contains a thermoplastic resin and a composite oxide black pigment that is a pigment formed of an oxide of main component metal containing copper, manganese and iron.

<CIT> is directed to a cool-feeling woven fabric comprising modified cross-section synthetic fibers, and containing white micro particles comprising stannic oxide doped with antimony oxide, or white micro particles comprising other inorganic micro particles coated with antimony oxide-doped stannic oxide.

<CIT> is related to a heat blocking fiber and fabric manufactured using the same, which contain a material having a perovskite structure represented in a synthetic resin. The heat blocking fiber has the effect that the surface temperature of the fiber is lower than that of an ordinary synthetic fiber of the same resin.

In <CIT> is disclosed a far infrared functional master batch, a polyester fiber and the application of the master batch. The master batch is mainly prepared from PETG fibers and a far infrared ceramic material, wherein the far infrared ceramic material contains tourmaline, vermiculite, medical stone, kaolin, alumina, zirconia and yttria.

An aspect of the present disclosure relates in general to an infrared reflecting fiber, which is suitable for applying to dark-colored fabrics.

According to the present disclosure, the infrared reflecting fiber is fabricated by a method comprising: mixing <NUM> parts by weight to <NUM> parts by weight of a carrier, <NUM> parts by weight to <NUM> parts by weight of an infrared reflecting composition, <NUM> parts by weight to <NUM> parts by weight of a titanium dioxide containing composition, and <NUM> parts by weight to <NUM> parts by weight of a color adjusting composition. The carrier includes polyethylene terephthalate (PET). The infrared reflecting composition comprises an infrared reflecting colorant comprising a black infrared reflecting colorant, a yellow infrared reflecting colorant, or combinations thereof, the color adjusting composition comprises a color adjusting colorant comprising a yellow color adjusting colorant, a red color adjusting colorant, a blue color adjusting colorant, a green color adjusting colorant, a purple color adjusting colorant, or combinations thereof. When a content of <NUM> wt% to <NUM> wt% of the infrared reflecting composition and a balance of the carrier are mixed together to form a first fiber, a maximum infrared reflectivity of the first fiber is between <NUM> % and <NUM>%.

In some embodiments of the present disclosure, the infrared reflecting composition includes <NUM> parts by weight to <NUM> parts by weight of a substrate powder, <NUM> parts by weight to <NUM> parts by weight of an infrared reflecting colorant, and <NUM> parts by weight to <NUM> parts by weight of an additive.

In some embodiments of the present disclosure, the substrate powder includes polybutylene terephthalate (PBT).

In some embodiments of the present disclosure, the infrared reflecting colorant includes a titanium-nickel-antimony metal composite material.

In some embodiments of the present disclosure, when a content of <NUM> wt% to <NUM> wt% of the infrared reflecting colorant and a balance of the carrier are mixed together to form a second fiber, a maximum infrared reflectivity of the second fiber is between <NUM>% and <NUM>%.

In some embodiments of the present disclosure, the infrared reflecting colorant includes a chromium-iron metal composite material.

In some embodiments of the present disclosure, when a content of <NUM> wt% to <NUM> wt% of the infrared reflecting colorant and a balance of the carrier are mixed together to form a third fiber, a maximum infrared reflectivity of the third fiber is between <NUM>% and <NUM>%.

In some embodiments of the present disclosure, the additive includes a paraffin-based dispersant and a heat stabilizer.

In some embodiments of the present disclosure, a particle diameter of the infrared reflecting colorant is between <NUM> and <NUM>.

In some embodiments of the present disclosure, a titanium dioxide in the titanium dioxide containing composition is rutile.

In some embodiments of the present disclosure, the color adjusting composition includes <NUM> parts by weight to <NUM> parts by weight of a substrate powder, <NUM> parts by weight to <NUM> parts by weight of the color adjusting colorant, and <NUM> parts by weight to <NUM> parts by weight of an additive.

In some embodiments of the present disclosure, a particle diameter of the color adjusting colorant is between <NUM> and <NUM>.

Another aspect of the present disclosure relates in general to a method of fabricating an infrared reflecting fiber.

According to some embodiments of the present disclosure, the method of fabricating the infrared reflecting fiber includes the following steps: mixing <NUM> parts by weight to <NUM> parts by weight of an infrared reflecting composition, <NUM> parts by weight to <NUM> parts by weight of a titanium dioxide containing composition, <NUM> parts by weight to <NUM> parts by weight of a color adjusting composition, and <NUM> parts by weight to <NUM> parts by weight of a carrier, wherein the infrared reflecting composition comprises an infrared reflecting colorant comprising a black infrared reflecting colorant, a yellow infrared reflecting colorant, or combinations thereof, the color adjusting composition comprises a color adjusting colorant comprising a yellow color adjusting colorant, a red color adjusting colorant, a blue color adjusting colorant, a green color adjusting colorant, a purple color adjusting colorant, or combinations thereof, and when a content of <NUM> wt% to <NUM> wt% of the infrared reflecting composition and a balance of the carrier are mixed together to form a first fiber, a maximum infrared reflectivity of the first fiber is between <NUM>% and <NUM>%.

In some embodiments of the present disclosure, a method of fabricating the infrared reflecting composition includes the following steps: performing a liquid grinding step to an infrared reflecting colorant; performing a drying step to form a refined infrared reflecting colorant after the liquid grinding step; and evenly mixing <NUM> parts by weight to <NUM> parts by weight of a substrate powder, <NUM> parts by weight to <NUM> parts by weight of the refined infrared reflecting colorant, and <NUM> parts by weight to <NUM> parts by weight of an additive to obtain the infrared reflecting composition.

In some embodiments of the present disclosure, a particle diameter of the refined infrared reflecting colorant is between <NUM> and <NUM>.

In some embodiments of the present disclosure, the liquid grinding step includes the following steps: mixing <NUM> parts by weight to <NUM> parts by weight of a water, <NUM> parts by weight to <NUM> parts by weight of the infrared reflecting colorant, and <NUM> part by weight to <NUM> parts by weight of a liquid dispersant; and grinding with a planetary ball mill at a speed of <NUM> rpm to <NUM> rpm for <NUM> hours to <NUM> hours.

In some embodiments of the present disclosure, a method of fabricating the titanium dioxide containing composition includes the following steps: performing a liquid grinding step to a titanium dioxide; performing a drying step to form a refined titanium dioxide after the liquid grinding step; and evenly mixing <NUM> parts by weight to <NUM> parts by weight of a substrate powder, <NUM> parts by weight to <NUM> parts by weight of the refined titanium dioxide, and <NUM> parts by weight to <NUM> parts by weight of an additive to obtain the titanium dioxide containing composition.

In some embodiments of the present disclosure, a particle diameter of the refined titanium dioxide is between <NUM> and <NUM>.

In some embodiments of the present disclosure, the liquid grinding step includes the following steps: mixing <NUM> parts by weight to <NUM> parts by weight of a water, <NUM> parts by weight to <NUM> parts by weight of the titanium dioxide, and <NUM> part by weight to <NUM> parts by weight of a liquid dispersant; and grinding with a planetary ball mill at a speed of <NUM> rpm to <NUM> rpm for <NUM> hours to <NUM> hours.

In some embodiments of the present disclosure, a method of fabricating the color adjusting composition includes the following steps: evenly mixing <NUM> parts by weight to <NUM> parts by weight of a substrate powder, <NUM> parts by weight to <NUM> parts by weight of a color adjusting colorant, and <NUM> parts by weight to <NUM> parts by weight of an additive to obtain the color adjusting composition.

In the aforementioned embodiments of the present disclosure, by mixing the carrier, the infrared reflecting composition, the titanium dioxide containing composition, and the color adjusting composition in a specific ratio, the infrared reflecting fiber having low luminance and high infrared reflectivity is fabricated. Therefore, the dark-colored fabric fabricated by using the infrared reflecting fiber has good thermal insulation effect.

The present disclosure relates to an infrared reflecting fiber and a method of fabricating the same. By evenly mixing the carrier, the infrared reflecting composition, the titanium dioxide containing composition, and the color adjusting composition in a specific ratio, the infrared reflecting fiber having low luminance and high infrared reflectivity is fabricated, thereby fabricating a dark-colored fabric with good thermal insulation effect.

The method of fabricating the infrared reflecting fiber of the present disclosure includes mixing <NUM> parts by weight to <NUM> parts by weight of the carrier, <NUM> parts by weight to <NUM> parts by weight of the infrared reflecting composition, <NUM> parts by weight to <NUM> parts by weight of the titanium dioxide containing composition, and <NUM> parts by weight to <NUM> parts by weight of the color adjusting composition to form the infrared reflecting fiber with a dark color and high infrared reflectivity. It should be understood that the "infrared" mentioned in the present disclosure refers to a long wavelength radiation with a wavelength between <NUM> and <NUM>, also referred to as "near infrared".

Each component in the infrared reflecting fiber and the infrared reflecting fiber itself will be discussed in detail in the following descriptions.

The carrier includes polyethylene terephthalate (PET). In some embodiments, the carrier may further include polybutylene terephthalate (PBT) or other polyester. In other words, the carrier may be a single component or a mixture of multiple components.

The infrared reflecting composition is configured to enhance the infrared reflectivity of the infrared reflecting fiber of the present disclosure. Specifically, when a content of <NUM> wt% to <NUM> wt% of the infrared reflecting composition and a balance of the carrier are mixed together to form a first fiber, a maximum infrared reflectivity of the first fiber and a fabric fabricated therefrom is between <NUM>% and <NUM>%. In some embodiments, the infrared reflecting composition may include <NUM> parts by weight to <NUM> parts by weight of a substrate powder, <NUM> parts by weight to <NUM> parts by weight of an infrared reflecting colorant, and <NUM> parts by weight to <NUM> parts by weight of an additive.

In some embodiments, the substrate powder may include polybutylene terephthalate. In some embodiments, the substrate powder may further include polyethylene terephthalate or other polyester. In other words, the substrate powder may be a single component or a mixture of multiple components.

In some embodiments, the infrared reflecting colorant may be a yellow infrared reflecting colorant, and the yellow infrared reflecting colorant may include a titanium-nickel-antimony metal composite material, so as to enhance the infrared reflectivity of a fiber fabricated therefrom. Specifically, when a content of <NUM> wt% to <NUM> wt% of the yellow infrared reflecting colorant and a balance of the carrier are mixed together to form a second fiber, a maximum infrared reflectivity of the second fiber and a fabric fabricated therefrom may be between <NUM>% and <NUM>%. In some embodiments, L*, a*, and b* values in the L*a*b* color space of the second fiber and the fabric fabricated therefrom may respectively be between <NUM> and <NUM>, between -<NUM> and -<NUM>, and between <NUM> and <NUM>, indicating that a color of the second fiber and the fabric fabricated therefrom is yellow. In some embodiments, a fiber fineness of the second fiber may be between 50d/24f and 300d/144f, and fiber strength of the second fiber may be larger than <NUM>/d, so as to meet the industrial standards.

In some embodiments, the infrared reflecting colorant may be a black infrared reflecting colorant, and the black infrared reflecting colorant may include a chromium-iron metal composite material, so as to enhance the infrared reflectivity of the fiber fabricated therefrom. Specifically, when a content of <NUM> wt% to <NUM> wt% of the black infrared reflecting colorant and a balance of the carrier are mixed together to form a third fiber, a maximum infrared reflectivity of the third fiber and a fabric fabricated therefrom may be between <NUM>% and <NUM>%. In some embodiments, L*, a*, and b* values in the L*a*b* color space of the third fiber and the fabric fabricated therefrom may respectively be between <NUM> and <NUM>, between <NUM> and <NUM>, and between <NUM> and <NUM>, indicating that a color of the third fiber and the fabric fabricated therefrom is black. In some embodiments, a fiber fineness of the third fiber may be between 50d/24f and 300d/144f, and fiber strength of the third fiber may be larger than <NUM>/d, so as to meet the industrial standards.

In some embodiments, the additive may include a paraffin-based dispersant and a heat stabilizer. The paraffin-based dispersant can make the substrate powder and the infrared reflecting colorant be evenly dispersed, and the thermal stabilizer can prevent the infrared reflecting colorant from degradation at a high temperature. In some embodiments, the paraffin-based dispersant is, for example, D1841E (a product name, purchased from EMS-GRIVORY Co. ), and the thermal stabilizer is, for example, Eversorb90 (a product name, purchased from Everlight Chemical Co. ) or Eversorb12 (a product name, purchased from Everlight Chemical Co.

A method of fabricating the infrared reflecting composition will be discussed in the following descriptions.

Firstly, a liquid grinding step is performed to the infrared reflecting colorant. In some embodiments, the liquid grinding step includes mixing <NUM> parts by weight to <NUM> parts by weight of a water, <NUM> parts by weight to <NUM> parts by weight of the infrared reflecting colorant, and <NUM> part by weight to <NUM> parts by weight of a liquid dispersant and grinding with a planetary ball mill at a speed of <NUM> rpm to <NUM> rpm for <NUM> hours to <NUM> hours. In some embodiments, the liquid dispersant may include a non-ionic dispersant. In some embodiments, the planetary ball mill may be with zirconium beads.

Then, a drying step is performed to form a refined infrared reflecting colorant after the liquid grinding step. In some embodiments, a particle diameter of the refined infrared reflecting colorant may be between <NUM> and <NUM>. In some embodiments, a drying temperature may be between <NUM> and <NUM>, and a drying time may be between <NUM> hours and <NUM> hours.

Subsequently, <NUM> parts by weight to <NUM> parts by weight of the substrate powder, <NUM> parts by weight to <NUM> parts by weight of the refined infrared reflecting colorant, and <NUM> parts by weight to <NUM> parts by weight of the additive are evenly mixed to obtain the infrared reflecting composition. In some embodiments, the infrared reflecting composition may further undergo kneading granulation to form into masterbatches (plastic granules), so as to improve the storage convenience. In some embodiments, a kneading temperature may be between <NUM> and <NUM>. In some embodiments, a rotation speed may be between <NUM> rpm and <NUM> rpm.

The titanium dioxide containing composition is configured to enhance the infrared reflectivity of the infrared reflecting fiber of the present disclosure. In some embodiments, a titanium dioxide in the titanium dioxide containing composition may be rutile, so as to enhance the infrared reflectivity of the fiber fabricated therefrom. Specifically, when a content of <NUM> wt% of the titanium dioxide and a balance of the carrier are mixed together to form a fourth fiber, a maximum infrared reflectivity of the fourth fiber and a fabric fabricated therefrom may be <NUM>%. In some embodiments, L*, a*, and b* values in the L*a*b* color space of the fourth fiber and the fabric fabricated therefrom may respectively be <NUM>, -<NUM>, and <NUM>, indicating that a color of the fourth fiber and the fabric fabricated therefrom is white. In some embodiments, a fiber fineness of the fourth fiber may be between 50d/24f and 300d/144f, and fiber strength of the fourth fiber may be larger than <NUM>/d, so as to meet the industrial standards.

A method of fabricating the titanium dioxide containing composition will be discussed in the following descriptions.

Firstly, a liquid grinding step is performed to the titanium dioxide. In some embodiments, the liquid grinding step includes mixing <NUM> parts by weight to <NUM> parts by weight of a water, <NUM> parts by weight to <NUM> parts by weight of the titanium dioxide, and <NUM> part by weight to <NUM> parts by weight of a liquid dispersant and grinding with a planetary ball mill at a speed of <NUM> rpm to <NUM> rpm for <NUM> hours to <NUM> hours. In some embodiments, the liquid dispersant may include a non-ionic dispersant. In some embodiments, the planetary ball mill may be with zirconium beads.

Then, a drying step is performed to form a refined titanium dioxide after the liquid grinding step. In some embodiments, a particle diameter of the refined titanium dioxide may be between <NUM> and <NUM>. In some embodiments, a drying temperature may be between <NUM> and <NUM>, and a drying time may be between <NUM> hours and <NUM> hours.

Subsequently, <NUM> parts by weight to <NUM> parts by weight of the substrate powder, <NUM> parts by weight to <NUM> parts by weight of the refined titanium dioxide, and <NUM> parts by weight to <NUM> parts by weight of the additive are evenly mixed to obtain the titanium dioxide containing composition. In some embodiments, the titanium dioxide containing composition may further undergo kneading granulation to form into masterbatches (plastic granules), so as to improve the storage convenience. In some embodiments, a kneading temperature may be between <NUM> and <NUM>. In some embodiments, a rotation speed may be between <NUM> rpm and <NUM> rpm.

The color adjusting composition is configured to make the infrared reflecting fiber of the present disclosure have a lower luminance, thereby showing a darker color. In some embodiments, the color adjusting composition may include <NUM> parts by weight to <NUM> parts by weight of a substrate powder, <NUM> parts by weight to <NUM> parts by weight of a color adjusting colorant, and <NUM> parts by weight to <NUM> parts by weight of an additive.

In some embodiments, the color adjusting colorant may include yellow color adjusting colorant, red color adjusting colorant, blue color adjusting colorant, green color adjusting colorant, and purple color adjusting colorant. In some embodiments, a particle diameter of the color adjusting colorant may be between <NUM> and <NUM>. When a content of <NUM> wt% of the above color adjusting colorants are respectively mixed together with a balance of the carrier to form corresponding fibers, L*, a*, and b* values in the L*a*b* color space, a maximum infrared reflectivity, a fiber fineness, and fiber strength of the corresponding fibers are shown in Table <NUM>.

According to the L*a*b* values in Table <NUM>, when a content of <NUM> wt% of the yellow color adjusting colorant, red color adjusting colorant, blue color adjusting colorant, green color adjusting colorant, and purple color adjusting colorant are respectively mixed together with a balance of the carrier to form the corresponding fibers, colors of the corresponding fibers are yellow, red, blue, green, and purple, respectively. In addition, each fiber can have good maximum infrared reflectivity as well as fiber fineness and fiber strength that meet the industrial standards.

A method of fabricating the color adjusting composition will be discussed in the following descriptions.

<NUM> parts by weight to <NUM> parts by weight of the substrate powder, <NUM> parts by weight to <NUM> parts by weight of the color adjusting colorant, and <NUM> parts by weight to <NUM> parts by weight of the additive are evenly mixed to obtain the color adjusting composition. In some embodiments, the color adjusting composition may further undergo kneading granulation to form into masterbatches (plastic granules), so as to improve the storage convenience. In some embodiments, a kneading temperature may be between <NUM> and <NUM>. In some embodiments, a rotation speed may be between <NUM> rpm and <NUM> rpm. In some embodiments, a particle diameter of the color adjusting colorant may be between <NUM> and <NUM>.

The present disclosure then mix <NUM> parts by weight to <NUM> parts by weight of the carrier, <NUM> parts by weight to <NUM> parts by weight of the infrared reflecting composition, <NUM> parts by weight to <NUM> parts by weight of the titanium dioxide containing composition, and <NUM> parts by weight to <NUM> parts by weight of the color adjusting composition, and then perform a melt-spinning step to obtain the infrared reflecting fiber with a dark color and high infrared reflectivity. In some embodiments, a spinning temperature of the melt-spinning step may be between <NUM> and <NUM>. In some embodiments, a spinning speed of the melt-spinning step may be greater than or equal to <NUM>/min.

In some embodiments, the infrared reflecting fiber may be, for example, a single-component fiber. In other embodiments, the infrared reflecting fiber may be, for example, a sheath-core fiber. In some embodiments, a fiber fineness of the infrared reflecting fiber may be between 50d/24f and 300d/144f, and fiber strength may be greater than <NUM>/d, so as to meet the industrial standards.

In the following descriptions, multiple comparative examples and embodiments are listed to verify the efficacies of the present disclosure. The components and contents of each comparative example and embodiment are shown in Table <NUM>, in which comparative examples <NUM> to <NUM> and embodiments <NUM> to <NUM> are single-component fibers, and embodiment <NUM> is a sheath-core fiber with a sheath/core weight ratio of <NUM>/<NUM>. It should be understood that the carrier, infrared reflecting composition, titanium dioxide containing composition, and/or color adjusting composition in each comparative example and embodiment are fabricated by the aforementioned components and methods.

For example, when the infrared reflecting composition is represented as "yellow", it implies that it is fabricated by using the aforementioned yellow infrared reflecting colorant, and when the color adjusting composition is represented as "yellow + red + purple", it implies that it is fabricated by using the aforementioned yellow, red, and purple color adjusting colorants.

In this experiment, the fibers of the aforementioned comparative examples and embodiments are respectively fabricated into fabrics for the L*a*b* values, maximum infrared reflectivity, and surface temperature change tests. In the surface temperature change test, the condition is to use a halogen lamp with a power of <NUM> W and a wavelength of <NUM> to irradiate the fabrics for <NUM> minutes from a vertical distance of <NUM>. The testing results are shown in Table <NUM>.

Firstly, according to the L*a*b* values in the L*a*b* color space of embodiments <NUM> to <NUM>, when <NUM> parts by weight to <NUM> parts by weight of the infrared reflecting composition, <NUM> parts by weight of the titanium dioxide containing composition, <NUM> parts by weight to <NUM> parts by weight of the color adjusting composition, and <NUM> parts by weight of the carrier are mixed together to form the infrared reflecting fibers, the color of the infrared reflecting fibers is dark black-purple, and their L* value are between <NUM> and <NUM>, showing lower luminance (i.e., a darker color). In addition, the maximum infrared reflectivity of each of the embodiments <NUM> to <NUM> is between <NUM>% and <NUM>%, showing good infrared reflectivity. Furthermore, the surface temperatures of the fabrics respectively fabricated by embodiments <NUM> to <NUM> are small, showing good thermal insulation effect.

Then, according to the L*a*b* values in the L*a*b* color space of embodiments <NUM> to <NUM>, when <NUM> parts by weight of the infrared reflecting composition, <NUM> parts by weight to <NUM> parts by weight of the titanium dioxide containing composition, <NUM> parts by weight to <NUM> parts by weight of the color adjusting composition, and <NUM> parts by weight to <NUM> parts by weight of the carrier are mixed together to form the infrared reflecting fibers, the color of the infrared reflecting fibers is dark black-green, and their L* value are between <NUM> and <NUM>, showing lower luminance (i.e., a darker color). In addition, the maximum infrared reflectivity of each of the embodiments <NUM> to <NUM> is between <NUM>% and <NUM>%, showing good infrared reflectivity. Furthermore, the surface temperatures of the fabrics respectively fabricated by embodiments <NUM> to <NUM> are small, showing good thermal insulation effect.

Next, according to the L*a*b* values in the L*a*b* color space of embodiment <NUM>, when <NUM> parts by weight of the infrared reflecting composition, <NUM> parts by weight of the titanium dioxide containing composition, <NUM> parts by weight of the color adjusting composition, and <NUM> parts by weight of the carrier are mixed together to form the infrared reflecting fiber, the color of the infrared reflecting fiber is dark black, and its L* value is <NUM>, showing lower luminance (i.e., a darker color). In addition, the maximum infrared reflectivity of the embodiment <NUM> is <NUM>%, showing good infrared reflectivity. Furthermore, the surface temperature of the fabric fabricated by embodiment <NUM> is small, showing good thermal insulation effect.

Lastly, embodiment <NUM> is a sheath-core fiber, the infrared reflecting composition is in the core layer, the titanium dioxide containing composition is in the sheath layer, and the color adjusting composition is in both the core layer and the sheath layer. According to the L*a*b* values in the L*a*b* color space of embodiment <NUM>, when <NUM> parts by weight of the infrared reflecting composition, <NUM> parts by weight of the color adjusting composition, and <NUM> parts by weight of the carrier are mixed together to form the infrared reflecting fiber, the color of the infrared reflecting fiber is dark black, and its L* value is <NUM>, showing lower luminance (i.e., a darker color). In addition, the maximum infrared reflectivity of the embodiment <NUM> is <NUM>%, showing good infrared reflectivity. Furthermore, the surface temperature of the fabric fabricated by embodiment <NUM> is small, showing good thermal insulation effect.

On the other hand, according to the L*a*b* values in the L*a*b* color space of comparative examples <NUM> to <NUM>, the fibers fabricated simply by common polyester have higher luminance and cannot show a dark color. According to the L*a*b* values in the L*a*b* color space of comparative examples <NUM> to12, the fibers fabricated by merely one of the infrared reflecting composition, the titanium dioxide containing composition, and the color adjusting composition also have higher luminance and cannot show a dark color.

In this experiment, the fibers of embodiments <NUM>, <NUM>, <NUM>, and <NUM> are respectively fabricated into fabrics for the washing fastness, perspiration fastness, and light fastness tests, in which the method of the washing fastness test is AATCC <NUM>-<NUM>2A, the method of the perspiration fastness test is AATCC <NUM>, and the method of the light fastness test is AATCC <NUM>. According to the results, the fabrics fabricated by using the aforementioned embodiments can reach the grades <NUM> to <NUM> for the washing fastness and perspiration fastness tests to wool, acrylic, tedron, nylon, cotton, and acetic acid, and the fabrics fabricated by using the aforementioned embodiments can reach the grade <NUM> or above for the light fastness test. Accordingly, the fabrics fabricated by using the aforementioned embodiments have hardly any color transfer to wool, acrylic, tedron, nylon, cotton, and acetic acid, and can maintain their original color after the light fastness test, so as to meet the needs of users.

Claim 1:
An infrared reflecting fiber, characterized by being fabricated by a method comprising:
mixing <NUM> parts by weight to <NUM> parts by weight of a carrier, <NUM> parts by weight to <NUM> parts by weight of an infrared reflecting composition, <NUM> parts by weight to <NUM> parts by weight of a titanium dioxide containing composition, and <NUM> parts by weight to <NUM> parts by weight of a color adjusting composition, wherein the carrier comprises polyethylene terephthalate (PET), wherein the infrared reflecting composition comprises an infrared reflecting colorant comprising a black infrared reflecting colorant, a yellow infrared reflecting colorant, or combinations thereof, the color adjusting composition comprises a color adjusting colorant comprising a yellow color adjusting colorant, a red color adjusting colorant, a blue color adjusting colorant, a green color adjusting colorant, a purple color adjusting colorant, or combinations thereof, and when a content of <NUM> wt% to <NUM> wt% of the infrared reflecting composition and a balance of the carrier are mixed together to form a first fiber, a maximum infrared reflectivity of the first fiber is between <NUM>% and <NUM>%.