TW201732101A - Method of manufacturing a color changeable fiber - Google Patents

Abstract

A method of forming color change fiber, comprises preparing polymer base material and preparing a plurality of warp yarns and a plurality of weft yarns, wherein the plurality of warp yarns are made by mixing a polymer base material with a color changeable material with a weight percentage ratio and the plurality of weft yarns are made of a polymer base material or natural fiber; forming a polymer fiber by spinning, weaving process for the warp yarns and the weft yarns, wherein the polymer fiber is color changeable when sunlight irradiates on the polymer fiber.

Description

Method of making a color changeable fiber

The present invention is generally directed to a color changeable fiber and a method of making the same.

The weaving is accomplished by passing the transverse lines in a predetermined, right-angled pattern to below and above the longitudinal lines. The loom increases the efficiency of the weaving by providing a loom frame that supports a plurality of longitudinal lines (called warp threads). The warp thread passes through a loop made of a thread or a string (called a heddle) attached to the upper and lower rods of the heald frame or the upper and lower rod members. between. When the heald frame is raised or lowered, it thus raises or lowers the attached heddle at the same distance, while the heddle pulls the warp through the heddle away from the other warp, sometimes creating a triangular cross-section (called shed), a transverse line (called a weft) is passed through the shed. This eliminates the need to move the weft up to the warp and down the weft to the warp. Instead, the weft is wrapped around the shuttle and the shuttle is passed from one hand through the shed produced by the separate warp to the other hand.

Although the term "line" is used to facilitate the use throughout the text, it should be understood that the "line" can cover any material that can be woven. For example, natural fibers, synthetic fibers, silk, yarn, crepe, paper, leather, and ribbon can be woven. Generally for materials to be woven, the material must have a length that is greater than its width.

Current UV resistant garments are applied to clothing using a material. The process requires an additional coating procedure and the coating material may be removed from the garment, thereby rendering the UV resistant function ineffective.

The invention provides a method for forming a color-changeable lens, comprising preparing a base material and preparing a color-changeable material; mixing the above-mentioned molding base material and the above-mentioned color-changeable material in a weight percentage ratio; and mixing the formed base material and discoloring The material is loaded into a molding device; the lens is formed by performing a molding process at a temperature by the molding device, wherein the lens changes color when sunlight is applied to the lens.

If the color changeable material contains a photochromic or thermochromic dye, the molding procedure includes Forming and extrusion molding, the molding temperature is lower than the cracking temperature of the above photochromic or thermochromic dye, and the molding temperature is about 180-200, 200-220, 220-230, 230-250 ° C, and the above-mentioned forming base material can be It is polycarbonate (Polycarbonate, PC) or polymethyl methacrylate (Para-Methoxymethamphetamine, PMMA).

If the color changeable material comprises silver halide and copper oxide, the silver halide comprises silver bromide, silver chloride or a combination thereof. The molding process includes injection molding or extrusion molding. The molding temperature is about 180-200, 200-220, 220-230, 230-250, 250-280, 280-300 °C. The above molding base material may be polycarbonate (Polycarbonate, PC) or poly-methyl methacrylate (Para-Methoxymethamphetamine, PMMA). If the color changeable material comprises titanium dioxide doped with silver, the molding process comprises injection molding or extrusion molding. The molding temperature is about 180-200, 200-220, 220-230, 230-250, 250-280, 280-300 °C.

A method for forming a color-changeable fiber, comprising preparing a polymeric base material and preparing a color-changeable material; mixing the above-mentioned polymeric base material and the above-mentioned color-changeable material in a weight percentage ratio; and filling the mixed polymeric base material and the color-changeable material into a a melting device; forming a polymeric fiber by a spinning and weaving process, wherein the polymeric fiber changes color when sunlight is irradiated onto the polymeric fiber. The above color changeable material may comprise a photochromic or thermochromic dye wherein the melting temperature is lower than the pyrolysis temperature of the photochromic or thermochromic dye. The melting temperature is about 180-200, 200-220, 220-230, 230-250, 250-300 °C.

The above color changeable material may comprise silver halide and copper oxide, wherein the silver halide comprises silver bromide, silver chloride or a combination thereof. The molding temperature is about 180-200, 200-220, 220-230, 230-250, 250-280, 280-300 °C. The color changeable material comprises titanium dioxide doped with silver, wherein the molding temperature is about 180-200, 200-220, 220-230, 230-250, 250-280, 280-300 °C.

In addition, the present invention discloses a method for forming a color-changeable fiber, comprising preparing a plurality of warp yarns and a plurality of weft yarns, wherein the plurality of warp yarns are formed by mixing a polymerized base material and a color-changeable material in a weight percentage ratio. a plurality of weft yarns are made of a second polymeric base material or natural fibers; and a polymeric fiber is formed by spinning and weaving the warp and weft yarns, wherein the polymeric fibers are irradiated when the sunlight is irradiated onto the polymeric fibers. Will change the color.

The above method further includes the step of performing a drawing process prior to the spinning and weaving process. The above color changeable material is selected from the group consisting of silver halide, silver doped titanium dioxide, photochromic dyes, and combinations thereof.

Further, the plurality of weft yarns are prepared by mixing the first polymeric base material and the first color-changeable material in a first weight percentage ratio by mixing the second polymerization base in a second weight percentage ratio The material is made with a second color changeable material. Therefore, when the sunlight is irradiated onto the above-mentioned polymer fiber, the above-mentioned polymer fiber changes color, and the color is obtained by mixing the first color generated by the first color-changeable material and the second color produced by the second color-changeable material. The mixed colors are different from the first color and the second color.

Further, the plurality of weft yarns are produced by mixing the first polymeric base material and the color changeable material in a weight percentage ratio, and the plurality of warp yarns are made of the second polymeric base material or natural fibers. When the sunlight is irradiated onto the above-mentioned polymeric fibers, the above-mentioned polymeric fibers change color.

100, 110, 120, 130, 200, 210, 220, 230, 300, 310, 320, 330, 340 ‧ ‧ steps

In order to better understand the present invention and to show how the invention can be implemented, reference is made to the following drawings: Figure 1 shows a schematic representation of the invention.

Figure 2 is a schematic view showing the present invention.

Figure 3 is a flow chart showing the process of forming a color-changeable fiber of the present invention.

Several exemplary embodiments of the invention are described in detail below. However, it should be appreciated that the invention may be practiced otherwise in other embodiments, except as specifically described in the specification. The scope of the present invention is not particularly limited except as specifically indicated in the appended claims. The following examples are for illustrative purposes only and are not intended to limit the invention.

Figure 1 shows the process of the present invention. The first step 100 is the preparation of a fibrous material and a photochromic (or thermochromic) dye. The above fibers may be plastic fibers.

The photochromic (or thermochromic) dye described above is sensitive to ultraviolet light, and when the photochromic (or thermochromic) dye is exposed to sunlight, the material will change its color due to chemical structural changes. Accordingly, the present invention will incorporate a photochromic or thermochromic dye during the melting process to melt the polymer used to form the polymeric fibers, while the stabilizer, UV absorber or antioxidant can optionally be added during the melting process. . Photochromic dyes can be spiropyrans, spiroxazines, fulgide, fulgimides, benzopyran, naphthopyran (naphthopyran) ), spirobenzopyran, spironaphthopran, spirobenzoxazine or spironaphthoxazine (spironaphthoxazine).

The photochromic dye has a weight percentage of about 0.01% to 0.3%. The process temperature during the melting process is preferably 260 ° C or less to prevent cracking of the chemical structure of the photochromic dye. If the system utilizes Para-Methoxymethamphetamine (PMMA) as a base material, the injection temperature is 230 ° C or lower, preferably 180-200 ° C. When polycarbonate (Polycarbonate, PC) is used as the base material, the injection temperature is 250 ° C or lower, preferably 220 to 245 ° C. Other materials such as polyethylene terephthalate (PET), polyamide fiber, nylon 6, nylon 6.6, nylon 1, polyester fiber, and poly pairs can also be used. Polybutylene terephthalate (PBT), Polytrimethylene terephthalate (PTT), polyacrylonitrile fiber, Acrylic fiber, Polyethylene Fiber ), Polypropylene Fiber (PP), Polyvinylalcohol Fiber (PVA), Polyvinylchloride Fiber (PVC), Polytetrafluoroethylene Fiber (PTFE), Polyurethane Polyurethane Fiber (PU), High-Modulus Polyethylene (HMPE), Polyphenylene Sulfide (PPS).

Referring to FIG. 1, in step 110, a polymeric fiber material (base material) is mixed with a photochromic dye, and the temperature is raised to melt the polymeric fiber material, and the photochromic dye is uniformly distributed in the melted polymer. The next step is in step 120 where a drawnwork procedure is performed to form a yarn having a dye. The next step is in step 130 by performing a spinning, weaving process to form the yarn into fibers. Fibers can be used to make clothes, hats, socks, gloves, pants, skirts, umbrellas, which contain photochromic dyes to absorb ultraviolet light and change its color to allow the user to "see" the anti-ultraviolet effect. The melting temperature may be 180-200, 200-220, 220-230, 230-250 ° C, 250-300 ° C depending on the selected polymer and dye. The base material should be dried according to its amount for 1-5 hours. The dried base material is then mixed with the photochromic dye in a certain ratio. The ratio and process temperature will affect the result of the color change. In addition, the maximum temperature of the molding process temperature should be lower than the cracking temperature of the dye. Further, the silver halide may be used alone or mixed with a photochromic dye to achieve a color change effect. In this embodiment, the copper oxide may be added during the process temperature of 220-250, 250-280 °C. In another embodiment, titanium dioxide having silver may be used together with polymethyl methacrylate (PMMA) or polycarbonate (PC) to form a color-changing lens by the above-described injection molding or extrusion molding. The weight percentage is almost the same as the dye. The size of the particles can range from 200 to 1000 nm. Nano-sized silver precipitates are formed on two commercial titanium dioxide nanopowders. In sunlight, titanium is doped with silver to change color because silver can capture or lose electrons. Titanium dioxide doped with silver can be used simultaneously to eliminate bacteria on the lens. Titanium dioxide is preferably formed on the surface of the lens by immersion in a solution of titanium dioxide doped with silver. Nano-sized silver precipitates were formed on two commercial titanium dioxide nanopowders by photochemical reduction. The deactivated powertrain of nAg/TiO ₂ is compared to the base titanium dioxide material and the silver ions filtered from the catalyst. The increased production of hydroxyl radicals is responsible for promoting viral deactivation. The titanium dioxide material doped with silver may also have a color changing effect.

The method of the invention can be incorporated into the process of contact lenses. Referring to FIG. 2, in step 200, a polymer and a photochromic dye are prepared. In step 210, the polymeric material (base material) is mixed with the photochromic dye, and the temperature is elevated to melt the polymeric material, and the photochromic dye is uniformly distributed in the molten polymer. The next step is in step 220 where a molding procedure is performed to form a plastic contact lens by known procedures. The next step is in step 230 where a stripping procedure is performed to remove the forming device for the lens to contain the dye therein. The above contact lenses comprise a photochromic dye for absorbing ultraviolet light and changing its color to allow the user to "see" the anti-ultraviolet effect and have a stylish effect. The melting temperature may be 180-200, 200-220, 220-230, 230-250 ° C, 250-300 ° C depending on the selected polymer and dye. The base material should be dried according to its amount for 1-5 hours. The dried base material is then mixed with the photochromic dye in a certain ratio. The ratio and process temperature will affect the result of the color change. In addition, the maximum temperature of the molding process temperature should be lower than the cracking temperature of the dye. Further, the silver halide may be used alone or mixed with a photochromic dye to achieve a color change effect. In this embodiment, the copper oxide may be added during the process temperature of 220-250, 250-280 °C. In another embodiment, titanium dioxide having silver may be used together with polymethyl methacrylate (PMMA) or polycarbonate (PC) to form a color-changing lens by the above-described injection molding or extrusion molding. The weight percentage is almost the same as the dye. The size of the particles can range from 200 to 1000 nm. Nano-sized silver precipitates are formed on two commercial titanium dioxide nanopowders. In sunlight, titanium is doped with silver to change color because silver can capture or lose electrons. Titanium dioxide doped with silver can be used simultaneously to eliminate bacteria on the lens. Titanium dioxide is preferably formed on the surface of the lens by immersion in a solution of titanium dioxide doped with silver. Nano-sized silver precipitates were formed on two commercial titanium dioxide nanopowders by photochemical reduction. The deactivated powertrain of nAg/TiO ₂ is compared to the base titanium dioxide material and the silver ions filtered from the catalyst. The increased production of hydroxyl radicals is responsible for promoting viral deactivation.

Infrared rays can cause damage to the cornea, crystals and vitreous, such as 0.8-1.2 micron red The outside line and 760-1400 nm infrared are not good for the eyes. If the anti-infrared material is introduced to the above embodiment singly or in combination, the method of the present invention can be introduced into the process of a contact lens having an infrared blocking function. The polymeric material (base material) is mixed with an anti-infrared material having a size of about 80-350 nm. Other programs are similar to the above embodiments.

Figure 3 is a diagram showing the process of forming a color-changeable fiber woven textile of the present invention. The color changeable fiber can be a woven textile. The first step 300 provides a plurality of warp yarns and a plurality of weft yarns. The warp yarns are produced by mixing the first polymeric base material with a color changeable material in a weight percentage ratio. For example, warp yarns are produced by step 110 in which the fibrous material is mixed with a photochromic (or thermochromic) dye system. Therefore, each warp yarn contains a photochromic dye to absorb ultraviolet light and change its color to allow the user to "see" the color change effect. The weft yarn is made of a fibrous material (polymeric base material or natural fiber) and has no color changeable material (photochromic dye). The following steps are performed by spinning and editing procedures to make warp and weft yarns into woven textiles. In step 310, the first group of warp yarns are removed relative to the second group of warp yarns in a first direction to create a first shuttle between the warp yarns of the first group and the warp yarns of the second group. mouth. The first direction is the first vertical direction. Next, in step 320, the weft insertion shuttle passes through the first shed in the first weft shuttle direction to form a weft yarn. Continuing, in step 330, removing the warp yarns of the third group with respect to the warp yarns of the fourth group in the second direction to generate a second shuttle between the warp yarns of the third group and the warp yarns of the fourth group mouth. The second direction is the second vertical direction. Next, in step 340, the weft insertion shuttle passes through the second shed in the second weft direction to form another weft yarn, and the second weft shuttle direction is opposite to the first weft shuttle direction. Next, steps 310-340 are repeated a predetermined number of times to obtain a predetermined number of weft yarns. As described above, the warp yarn is embedded with a photochromic (or thermochromic) dye, and the weft yarn has no photochromic (or thermochromic) dye. Therefore, the color-changeable fiber (woven textile) produced by the warp yarn and the weft yarn has an effect of discoloration after ultraviolet irradiation and has a color mixing effect.

In another embodiment, the weft yarn is made by mixing the first polymeric base material with the first color changeable material in a first weight percentage ratio, and the plurality of warp yarns are mixed by the second polymerization in a second weight percentage ratio. The base material is made of a second color changeable material. Therefore, each warp and weft yarn contains a color-changeable material (photochromic dye) for absorbing light (for example, ultraviolet light) and changing its color so that the user can "see" the color change effect. For example, when the weft yarn and the warp yarn absorb light (for example, ultraviolet rays), the color of the weft yarn is changed to the first color, and the color of the warp yarn is changed to the second color. Therefore, the polymer fiber changes color, and its color is the first when sunlight is irradiated onto the polymer fiber. The first color produced by the color changing material is mixed with the second color produced by the second color changing material. Since the first color is different from the second color, the color-changeable fiber (woven textile) produced by the warp yarn and the weft yarn has an effect of discoloration after light (for example, ultraviolet light) irradiation and an effect of color mixing. The mixed colors are different from the first color and the second color.

In still another embodiment, the plurality of weft yarns are made by mixing the first polymeric base material with the color changeable material in a weight percentage ratio, and the plurality of warp yarns are made of the second polymeric base material or natural fibers. For example, the weft yarn is produced by step 110 in which the fibrous material is mixed with a photochromic (or thermochromic) dye. Therefore, each weft yarn contains a photochromic dye for absorbing light and changing its color so that the user can "see" the color change effect. The warp yarn is made of a fibrous material (polymeric base material or natural fiber) and has no color changeable material (photochromic dye).

In order to reduce the manufacturing cost and increase the wearing comfort, the warp or weft yarn is made of a polymeric base material or natural fiber, and does not contain a color changeable material. The manufacturing cost of the color-changeable fiber can be reduced by mixing the polymeric base material. By mixing natural fibers, the wearing comfort and ventilation of the color-changing fibers can be increased.

The above-described preferred embodiments of the present invention are intended to be illustrative of the invention and are not intended to limit the invention. The scope of the appended claims is intended to cover the scope of the invention and the scope of the appended claims. While the preferred embodiment of the invention has been shown and described, it is understood that

100, 110, 120, 130‧ ‧ steps

Claims (8)

A method of forming a color-changeable fiber, comprising: preparing warp yarns and weft yarns, wherein the warp yarns are prepared by mixing a first polymeric base material and a color-changeable material in a weight percentage ratio, the weft yarns being a second polymerization The base material or natural fiber is made; and a polymeric fiber is formed by spinning and editing the warp yarn and the weft yarn, wherein the polymer fiber changes color when sunlight is irradiated onto the polymer fiber. A method of forming a color-changeable fiber, comprising: preparing a warp yarn and a weft yarn, wherein the weft yarn is made by mixing a first polymeric base material and a first color-changeable material in a first weight percentage ratio, wherein the warp yarn is produced by Forming a second polymeric base material and a second color changeable material in a second weight percentage ratio; and forming a polymeric fiber by spinning and weaving the warp yarn and the weft yarn, wherein when irradiated with sunlight When on the polymeric fiber, the polymeric fiber changes color, and the color is formed by mixing the first color-changeable material and the second color-changeable material. A method of forming a color-changeable fiber, comprising: preparing a warp yarn and a weft yarn, wherein the weft yarn is prepared by mixing a first polymeric base material and a color-changeable material in a weight percentage ratio, the warp yarn being subjected to a second polymerization The base material or natural fiber is made; and a polymeric fiber is formed by spinning and weaving the warp yarn and the weft yarn, wherein the polymer fiber changes color when sunlight is irradiated onto the polymer fiber. The method of claim 1, 2 or 3, further comprising performing an extracting process prior to the spinning and weaving process. The method of claim 1, 2 or 3, wherein the color changeable material is selected from the group consisting of silver halide, silver-doped titanium dioxide, photochromic dyes, and combinations thereof. The method of claim 1, 2 or 3, wherein the first polymeric base material comprises nylon, polyester, acrylic or polypropylene, and the second polymeric base material comprises nylon, polyester, acrylic or polypropylene. The method of claim 1, 2 or 3, wherein the spinning and weaving process comprises: (a) removing the warp yarn of the first group with respect to the warp yarn of the second group in a first direction, Creating a first shed between the warp yarns of the first group and the warp yarns of the second group; (b) inserting a weft insertion shuttle through the first shed in a first weft shuttle direction to form a weft yarn; (c) removing the warp yarn of the third group with respect to the warp yarn of the fourth group in the second direction to the warp yarn of the third group and the warp yarn of the fourth group Creating a second shed; and (d) inserting the weft into the shuttle through the second shed in a second weft direction to form a second weft yarn, wherein the second weft direction and the first weft The shuttle direction is reversed. The method of claim 7, further comprising repeating steps (a) through (d) a predetermined number of times to obtain a predetermined number of the weft yarns.