TW201917239A - Non-woven fabric and the method of making the same - Google Patents

Abstract

A method of forming a Non-woven fabric includes preparing polymer based material and dyne, followed by mixing the polymer based material and dyne with a ratio. Melting step is performed to melt the polymer based material, and the dyne to allow the dyne is distributed within the material uniformly. A non-woven fabric process is performed to form a non-woven fabric.

Description

 Non-woven fabric and its method  

The present invention relates to a fabric, and more particularly to a nonwoven fabric.

There are many variations in clothing. Traditional anti-UV clothing or umbrellas are coated with an anti-reflection layer to reflect part of the ultraviolet rays to achieve UV resistance. The anti-reflective layer is easily damaged by impact, scraping, tearing, tearing; whether it has anti-ultraviolet function is not known; therefore, the market is full of anti-ultraviolet hoes or umbrellas, but there is virtually no protective function. Some prior art techniques were unable to be colored and could not be successfully produced because of poor process conditions and procedures. However, prior art techniques have failed to dye, and composite double-layer materials have been used, resulting in complicated processes and increased costs.

The object of the invention is to propose a nonwoven fabric.

Another object of the present invention is to disclose an effect of absorbing ultraviolet rays to produce a change in appearance and to absorb ultraviolet rays.

Another object of the present invention is to disclose a fabric, particularly an ultraviolet absorbing fabric, which does not require the use of a composite two-layer material structure, making it easy to manufacture and obtain the desired color. In addition, it is not necessary to adopt the spinning process and is limited by the physical characteristics of the machine.

The ultraviolet absorbing fabric comprises a polymer material, and the doped ultraviolet absorbing dye, such as a photo-induced or thermo-induced dye, is prepared by mixing in a ratio; the fiber is melted by the polymer base material, and photoinduced or thermally induced The dye is distributed in the polymer base material, melted and placed in the solution tank, wherein the melting temperature is lower than the dissociation temperature of the photoinduced or thermotropic dye; the cloth contains a photo-induced or thermo-induced dye, which is good for absorbing ultraviolet rays. And achieve UV protection. If the basic color of the base material needs to be adjusted, the non-photoinduced dye (referred to as a polymer dye) may be doped into the base material of the polymer when the polymer base material and the photoinduced or thermotropic dye are mixed. This avoids the problem of difficulty in coloring afterwards; and the processing temperature is lower than the dissociation temperature of the photoinduced or thermotropic dye. Wherein the above melt process addition comprises a stabilizer, an antioxidant, a UV absorber, a coloring agent or a combination thereof. The above-mentioned fabric can be made into clothes, pants, caps, towels, cloaks, masks, and the like.

The ratio of the base material and the photochromic dye is: one to one hundred thousandth to one ten thousandth; or one to one ten thousandth to one ten thousandth; or one ten thousandth to One to one thousandth; or one to one thousand to one to five percent. The polymer base material comprises Polyamide Fiber, Polyester Fiber, Polyacrylonitrile Fiber, Polyethylene Fiber, Polypropylene Fiber, Polyvinylalcohol Fiber. , Polyvinylchloride Fiber, Polytetrafluoroethylene Fiber, Polyacrylonitrile (PAN), Nylon, Polyethylene terephthalate (PET, Polyester), Polybutylene Terephthalate ( PBT), polyurethane (spandex) or any combination of the above.

A method for making a non-woven fabric, comprising: adding a photo-induced dye to a base material in a ratio; distributing the photo-induced dye in the base material to form a mixed solution; and placing the mixed solution into the non-woven fabric device The solution tank; and the non-woven fabric is produced by using the mixed solution as a raw material, so that the non-woven fabric has an ultraviolet absorbing function. Wherein the above melt process addition comprises a stabilizer, an antioxidant, a UV absorber or a combination thereof; wherein the photoreactive or thermotropic dye form comprises microcapsules, liquid, powder, solution or masterbatch. The ratio of the base material and the photoinduced or thermotropic dye is one to tens of thousands to one ten thousandth; one to one ten thousandth to one ten thousandth; one hundred thousandth Five to one thousandth; one thousandth to one hundredth. Where the basic color of the base material needs to be adjusted, a doping dye is applied to the base material of the polymer to achieve a desired color.

An ultraviolet absorbing composition: a polymer-based material in which a photoinduced or thermotropic dye is mixed, processed and mixed at a temperature lower than a photoinduced or thermally induced dissociation temperature, and then formed into a light by a molding device. a color changing composition; wherein the mixing ratio of the base material and the photoinduced or thermotropic dye is one to several tens of thousands to one ten thousandth; one to one ten thousandth to one ten thousandth; One to one thousandth to one thousandth; one thousandth to one hundredth; one ratio is one to one to one tenth. If the polymer base material comprises polyester, the treatment temperature is 200-250 degrees Celsius. If the polymeric base material comprises polypropylene, the treatment temperature is 140-180 degrees Celsius.

100‧‧‧Material preparation procedures

110‧‧‧ Fusion material program

120‧‧‧Into the solution tank procedure

130‧‧‧ Non-woven procedure

The above aspects and advantages of the present invention will be more readily understood from the following detailed description of the invention. Wherein: the first figure is a schematic diagram of an embodiment of the invention.

In the following description, various specific details are set forth to provide a comprehensive understanding of the embodiments of the invention. The present invention will be described in detail with reference to the preferred embodiments and the accompanying drawings. It will be understood by those skilled in the art that the practice of the invention does not require one or more specific details or other specific methods. The present invention can be applied to various fibers, and the following description will be made.

Traditional anti-UV garments, hats or umbrellas are coated with an anti-reflective layer to reflect part of the ultraviolet light to achieve UV resistance. The anti-reflective layer is easily damaged by impact, scraping, tearing, tearing; whether it has anti-ultraviolet function is not known; therefore, the market is full of anti-ultraviolet tweezers, but the protective function is actually unknown. If the material is doped into the high molecular polymer, the manufacturing cost is too high, and it is limited by the physical limitation of the spinning process machine, which is unfavorable for process conversion.

In addition to the dye doping and fusion into the cloth, the invention is not subject to the physical limitation of the spinning machine, and thus is not easily damaged by scratching, tearing, impacting.

The fusion means comprises heating the molten polymer or dissolving the photo-induced dye in a polymer solution to be substantially uniformly distributed therein. In addition, in this stage, it is conceivable to add a dye or a color master to facilitate color adjustment. Adding at this stage allows the dye to be evenly distributed throughout the fabric to enhance color stability. The present invention uses a photo-induced dye to be fused in a cloth, and the dye undergoes a reversible chemical change after being irradiated with sunlight or ultraviolet rays to cause a color change. When not exposed to the above sunlight or ultraviolet light, the original color can be restored. The photochromic dye can be doped with a polymer and a UV absorber to selectively absorb ultraviolet rays. The addition of antioxidants or/and UV absorbers to high molecular weight polymers can improve light fatigue. The above photochromic material may be spiropyran, spirooxazine, fulgide, cuminimide, benzopyran, naphthopyran, spirobenzopyran, spironaphthylpyran, spirobenzene Oxazine, spironaphthoxazine, etc. (spiropyrans, spiroxazines, fulgide, fulgimides, benzopyran, naphthopyran, spirobenzopyran, spironaphthopyran, spirobenzoxazine or spironaphthoxazine), but not limited to the above examples.

In an example, a base material of a polymer or a polymer and a photo-induced dye are first prepared (if a thermotropic dye is used, the energy of the ultraviolet light is absorbed to cause color change), and in step 100, the color is adjusted. , you need to prepare a traditional dye (non-photoinduced) dye or color masterbatch. The photochromic dye or the thermotropic dye may be used or the discoloration molecule may be added to the polymer or resin material. The base material and the photochromic dye may be powder, capsule, liquid, solution or plastic material. grain.

Then, the two are stirred and mixed uniformly, and the base material of the polymer or polymer is heated and melted to be fused, and the heating fusion temperature is lower than the dissociation temperature of the photo-induced dye, refer to step 110. For example, the photo-induced material of the above ratio and the high-molecular polymer may be mixed, and the mixing concentration thereof is related to the color-changing effect. If the above photochromic dye is selected from a powder and a processing temperature, it is not necessary to use a dispersing agent. For example, the Celsius temperature is 150-180 or 180-220 degrees. In the examples, powdery, capsular, liquid, solution photophotosensitive dyes can be used.

The present invention is doped with a high molecular polymer doped photochromic dye, either by heating fusion or solution fusion, wherein the temperature at the time of mixing is lower than the dissociation temperature of the photochromic dye. The polymer may be dried before the above production process, depending on the amount and material, and may be mixed for 1 to 5 hours, and then the polymer and the photo-induced dye are mixed and processed. In summary, the plastic and the mixed photo-induced material are dried and stirred to make it uniform. Different temperatures and concentrations affect the depth of the basic color, so it can be used to control the desired color with non-chromic dyes. Photoinduced materials undergo thermal changes after exposure to sunlight or ultraviolet light. When not exposed to the above sunlight or ultraviolet light, the original color can be restored. Photochromic dyes absorb sunlight or ultraviolet light to produce a color change, so they can absorb ultraviolet light, and can cause the color of the fiber body to change, increase the fashion effect, and also make the anti-UV look, and add antioxidant or / and UV absorption. The agent can improve the anti-light fatigue.

The light (or thermal) color-changing dye is uniformly mixed with the base polymer or polymer material, and when it is subsequently carried out, the mixed polymer base material is placed in a solution tank of the non-woven process, see step 120. A non-woven fabric, also called a non-woven fabric, is processed by a needle rolling machine or a carding machine, and a cloth is produced by high pressure forming or bonding. The non-woven fabric may be rayon or synthetic fiber, and the raw material often contains polypropylene (PP). Non-woven fabrics are not woven from warp and weft. The fabrics of non-woven fabrics vary with the construction method. For example, the needle-rolling method is to entangle the cotton with thousands of needles and thorns. The entanglement will make the cotton body more and more solid. Therefore, the present invention can shorten the process, is not limited by the physical limitations of the drawing machine, and limits the number of drawn yarns.

The process of the invention can adopt Electrospinning (ES), Force spinning (FS), Solution blow spinning (SBS), Electroblowing (EB), and composite spinning process. (Islands in the sea, Segmented Pie, and side by side including SB and MB), Spunbonding (SB), Meltblowing (MB). For example, U.S. Patent No. 7,931,456, entitled "Electroblowing web formation", proposes an electrospray spinning process; U.S. Patent No. 6,800,226 discloses a spunbond nonwoven process. In general, the non-woven process consists of several basic components: high-voltage power supply, solution tank, nozzle, and collector. The above polymer and dye mixed solution is heated, and a non-woven fabric is obtained to obtain a non-woven fabric. Referring to step 130, the cloth can be used for various purposes, such as anti-ultraviolet clothing, pants, caps, umbrellas, masks, tents, etc. Absorbs UV light while reducing UV exposure. In umbrellas or tents, there are a variety of fabrics to choose from, such as Pongee and Polyester. Among them, Pongee has a softer texture. Polyester has a hard texture and a silver base oil on the bottom layer to enhance the opacity. Others can also be used, such as nylon cloth, oxford cloth, satin cloth, PVC, pearl cloth, EVA and T/C cotton cloth. Various other procedures, such as dyeing, embossing, or patterning, are well understood by those of ordinary skill in the art, and therefore will not be described.

Based on the present invention, the anti-reflection layer is not coated with ultraviolet rays as in the prior art, but the fiber made of the photo-induced dye absorbs ultraviolet rays, causing a chemical change to cause a color change effect, not only to absorb ultraviolet rays, but also to cause ultraviolet rays. Protection, seen as a result of color changes, enhances consumer trust. In addition, recycled PET bottles can also be used as the above-mentioned polymer materials to achieve environmental protection. In addition, the processing temperature of the present case needs to be lower than the dissociation temperature; and when doping the polymer and the ultraviolet absorbing dye, adding a color masterbatch or a conventional plastic dye to uniformly distribute it in the polymer base material instead of using post-staining dyeing Cloth surface.

The present invention has been described above by way of a preferred embodiment, and is not intended to limit the scope of the claimed invention. The scope of patent protection is subject to the scope of the patent application and its equivalent fields. Any modification or refinement made by those skilled in the art without departing from the spirit or scope of the present invention is equivalent to the equivalent change or design made in the spirit of the present disclosure, and should be included in the following patent application scope. Inside.

Claims (10)

 A method for making a non-woven fabric, comprising: adding a photo-induced dye to a base material in a ratio; distributing the photo-induced dye in the base material to form a mixed solution; and placing the mixed solution into the non-woven fabric device The solution tank; and the non-woven fabric is produced by using the mixed solution as a raw material, so that the non-woven fabric has an ultraviolet absorbing function.    The non-woven fabric method according to claim 1, wherein a stabilizer, an antioxidant, a UV absorber or a combination thereof is added to the procedure for forming the mixed solution.    The method of making a non-woven fabric according to claim 1, wherein the photo-induced dye form comprises microcapsules, liquid, powder or granules.    The non-woven fabric method according to claim 1, wherein the base material and the photochromic dye are mixed at a ratio of one to several tens of thousands to one ten thousandth or one ten thousandth to one million Five or one hundredth to one thousandth to one thousandth or one thousandth to one hundredth of a ratio.    The non-woven fabric method according to claim 1 or 2 or 3 or 4, wherein the polymer base material comprises Polyamide Fiber, Polyester Fiber, Polyacrylonitrile Fiber, Polyethylene (Polyacrylonitrile Fiber) Polyethylene Fiber), Polypropylene Fiber, Polyvinylalcohol Fiber, Polyvinylchloride Fiber, Polytetrafluoroethylene Fiber, Polyacrylonitrile (PAN), Nylon, Polyterephthalic Acid Ethylene glycol (PET, polyester), polybutylene terephthalate (PBT), polyurethane (spandex) or any combination of the above.    The non-woven fabric method according to claim 5, wherein the mixed solution temperature is lower than the photoinduced dye dissociation temperature.    A non-woven fabric, characterized in that the fabric body is made of a non-woven fabric, wherein the fabric body is doped with a photo-induced dye, so that the non-woven fabric has an ultraviolet absorbing function.    The non-woven fabric of claim 7, wherein a stabilizer, an antioxidant, a UV absorber or a combination thereof is added to the cloth body.    The non-woven fabric of claim 7, wherein the base material and the photo-induced dye mixing ratio are from one tens of thousands to one ten thousandth or one hundred thousandth to one ten thousandth Or one to five thousand to one thousandth or one thousandth to one hundredth of a ratio.    The non-woven fabric according to claim 7 or 8 or 9, wherein the polymer base material comprises Polyamide Fiber, Polyester Fiber, Polyacrylonitrile Fiber, Polyethylene Fiber, Polypropylene Fiber, Polyvinylalcohol Fiber, Polyvinylchloride Fiber, Polytetrafluoroethylene Fiber, Polyacrylonitrile (PAN), Nylon, Polyethylene Terephthalate ( PET, polyester), polybutylene terephthalate (PBT), polyurethane (spandex) or any combination of the above.