KR20110009309A - Thermochromic dye printing textile and process for preparing the same - Google Patents

Abstract

PURPOSE: A thermochromic dye-printed textile and a method for manufacturing the same are provided to apply themochomic dye to a textile and to check baby's heath condition. CONSTITUTION: A method for manufacturing themochromic dye-printed textile comprises: a step of plating a flat screen; a step of color-matching with a microcapsule containing themochromic dye; a step of drawing on a textile and drying at 120-140°C for 10-30 minutes; a step of fixing dye by steaming process and drying at 90-110°C; and a step of testing a product and packaging. The thermochromic dye-printed textile is used in babe products.

Description

Thermochromic dye printing textile and process for preparing the same

The present invention relates to a thermal dye printing fabric and a method for manufacturing the same, and more particularly, a thermal dye may be applied without alteration, and a thermal dye that may be discolored in a temperature range of 27 to 39 ° C. to check a baby's health condition, and the like. It relates to a printing fabric and a method of manufacturing the same.

Functional products come in many varieties in each field, temperature-sensitive (temperature sensing), photosensitive (ultraviolet-sensing) products are only available in some accessories. For example, Korean Patent Publication No. 2005-17498 discloses 60-85% by weight of a polyester solution in which a curing agent and a curing accelerator are mixed, 1-5% by weight of an oil-soluble microcapsule powder containing a thermochromic dye, and a powder containing lead as a main component. Or 3-7% by weight of liquid pearl foil, 10-25% by weight of oil-based flow inhibitor, and 1-3% by weight of pigment for color mixing to prepare a mixed solution for producing a molded article, and then harden the mixture into a sheet or rod form. There is disclosed a method for producing a thermochromic polyester molded article characterized in that it is formed into a desired shape by cutting or punching it, and then finishing and polishing. Here, polyester moldings are buttons, furniture, buckles, rings, earrings, necklaces, shoe ornaments, bag ornaments, interior ornaments, keychains, cell phone ornaments, bracelets, wallet ornaments, imitation tiles, fencing products, plaques, hairpins, brooches Collectively, it is a product used as a decorative accessory.

Korean Patent Registration No. 405138 is prepared by applying a mixture of a microcapsule emulsion containing a thermochromic substance and a foaming composition to a bubble paper, and excellent thermo-resistant discoloration coating, characterized in that the foam is mechanically or chemically foamed A method of making a fabric is disclosed.

Korean Utility Model Registration No. 224833 has a two-layer structure consisting of a fabric layer and a polyurethane or polyacrylic resin layer coated on the fabric layer, and the polyurethane or polyacrylic resin layer contains microcapsules containing aromatic components. A directional thermochromic fabric is disclosed in which pigments causing reversible discoloration are randomly dispersed according to temperature and temperature.

However, it is still difficult to incorporate the temperature-sensitive function into the fiber or fabric, as a representative example, there is a problem that the material is changed to an unstable state during a number of processes (high heat treatment, washing process, etc.) during the fiber processing.

In the present invention, the thermosensitive dye, which is a functional material, can be encapsulated and applied to a fabric, and a processing method for returning to a natural state without deterioration of the material has been developed, and thus it can be used in textile products.

Accordingly, it is an object of the present invention to provide a thermal dye printing fabric and a method for producing the same, wherein the thermal dye is applied without alteration.

It is another object of the present invention to provide a thermosensitive dye printing fabric and a method for manufacturing the same, which can be discolored at a temperature in the range of 27 to 39 ° C. to check the health of the baby.

The present invention to achieve the above object, (1) forming a flat screen; (2) toning dye dyes using microcapsules containing thermosensitive dyes; (3) stamping and primary drying the fabric using an automatic screen printing machine; (4) fixing the dye in a steaming process and performing secondary drying; (5) It provides a method for producing a thermal dye printing fabric comprising the step of inspecting and packaging the product.

In order to apply the thermosensitive dye without alteration in the present invention, the weight ratio of the synthetic resin binder: the thermosensitive dye microcapsules in the dye-favoring composition of step (2) is preferably 100: 10 to 15, and in the step (3) The drying temperature is preferably 120 to 140 ° C, the drying time is 10 to 30 minutes, and in step (4), the secondary drying temperature is 90 to 110 ° C, and it is preferable to pass through the tunnel at a low speed.

In the present invention, it is preferable to use a thermosensitive dye which discolors in a temperature range of 27 to 39 ° C. so as to confirm the health state of the baby.

In addition, the present invention is prepared according to the above-described method, it provides a thermal dye printing fabric, characterized in that the color change in the temperature range of 27 to 39 ℃.

The thermal dye printing fabric of the present invention can be particularly useful for baby products such as diapers, baby medical care.

According to the present invention, a thermosensitive dye can be applied to a printing fabric without alteration, and the health condition of a baby can be confirmed by using a thermosensitive dye that discolors in a specific temperature range, for example, a temperature range of 27 to 39 ° C.

1 is a manufacturing process diagram of the thermal dye printing fabric according to the present invention, flat screen plate making, fabric and dye facilitation coloration, automatic screen printing inks, tenta (steaming) process, product inspection, rolling and packing (box packaging) step It consists of.

First, plate a flat screen. It is a process of placing a film drawn in multiple sheets on a screen frame coated with an insoluble film, transmitting light to it, and washing it to make a screen frame as many as the number of colors to be used.

Next, the dye appeal is prepared using a microcapsule containing a thermosensitive dye.

Microcapsules refer to the insertion of a substance into a capsule of very small polymers, from several hundreds to hundreds of micrometres, where the inner material is protected by the wall of the capsule, and when, where or when the inner material is released to the outside. The back can be freely adjusted by changing the material and thickness of the wall material.

Dye is a material that is colored by receiving light, and is affected by the environment around it. A thermosensitive pigment has the characteristic that a color changes with temperature. However, since the dye is very sensitive to the external environment, it is a microcapsule that serves as a kind of protective film to protect it, and a microcapsule containing a thermosensitive pigment is called a thermochromic microcapsule.

Figure 2 is a 5,000 times magnification picture of the temperature-sensitive capsule used in the present invention, Figure 3 is a 20,000 times magnification picture of the temperature-sensitive capsule used in the present invention.

Looking at the principle of color change of the thermomicrocapsules, when heat is applied to the thermomicrocapsules, the color is lost due to the change in the structure of the capsule, and when cooled, the capsule is returned to its original structure and has the original color. .

By encapsulating the mixture in two or more colorants and developers with different colors in one pigment capsule, the mixture can be encapsulated so that one pigment capsule can exhibit at least three colors at different temperatures. Can be. In this case, only one type of the colorant may be used, or two or more colorants having different melting points may be used in combination.

Leuco dyes are colorless or pale white in nature, but when reacted with a colorant that helps color development, they form a complete dye and have a unique color. The leuco dye has a property of discoloring when it is mixed with higher fatty alcohols, ester compounds, waxes, and the like to melt, and recolored when these waxes (solid fatty alcohols) solidify and solidify. At this time, these higher fatty acid alcohols, waxes, etc. are called a colorant. That is, the leuco dye has a color development or bleaching effect according to the physical state change of the colorant.

There are many colorants that can be used for dyes, but in order to use them, those having a melting point range of about 5 to 50 ° C., which is a temperature range encountered in daily life, are required. By using these melting points, it is possible to obtain a thermosensitive pigment having a discoloration temperature range of -20 to 50 ° C.

Using a colorless or light-colored electron donating substance, leuco dye as a color developing agent, the corresponding color is mixed with an electron-accepting developing colorant and a colorant to allow color development at a specific temperature. They use the property of inhibiting color development in the molten state and color development in the solid state, and in this case, a colorant having a specific melting point may be selectively used.

In this way, if the capsule-type pigment made by mixing leuco dye, developer, and colorant is dispersed in water and printed or printed on fabric, paper, plastic film, ceramics, etc., the printed pattern will develop or discolor according to temperature change. It may indicate a change in color.

Even in this case, since the specific colorant has a constant melting point, it is inconvenient to limit the choice of the colorant to obtain a desired melting point, that is, to develop color in a desired temperature range. Therefore, in order to obtain a colorant having a desired melting point, that is, to develop color at a desired temperature, Raul's law may be applied, and two or more colorants may be mixed and used at a constant ratio.

In general, since the capsule-type thermosensitive pigment is manufactured to show only a single color, two or more single-color thermosensitive pigment capsules are mixed and used at a predetermined ratio in order to show various colors at various temperatures. However, when mixing the single color thermosensitive capsule in a certain ratio, the mixing ratio may not be exactly matched according to the skill of the operator, the basis weight error, and the working conditions. There was a problem that the uniform product can not be obtained.

In addition, in the case of mixing two types of capsule pigments having a single color, the compoundability, that is, the compatibility of each other is often poor, which sometimes results in dichroism (spreading). Encapsulated pigmentation has the advantage that such dichroism does not appear.

In the present invention, in producing the fine thermosensitive pigment capsule itself, homogeneity of the product by mixing two or more coloring agents with different colors when developing color, a developer and a colorant in one pigment capsule to prepare one fine pigment capsule with this mixture, Can be maintained.

When two or more leuco dyes are mixed in one capsule, freezing point depression occurs due to mutual mixing than when single dyes are used. Therefore, the melting point becomes lower and the discoloration temperature range becomes narrower. When using the instantaneous discoloration effect is effective.

That is, in the present invention, two to three kinds of leuco dyes are mixed and used to make the color of the various layers when mixed and instantaneous discoloration of various colors.

In the method for producing a capsule-type pigment, first, a color developer, a colorant, and a colorant are mixed, and then heated and melted, and a solution of the gelatine prepared separately is slowly added thereto while stirring, thereby emulsifying by emulsification of the gelatin to form a capsule immediately. The size of the capsule particles varies depending on the concentration of the solution, the stirring speed, the temperature, the structure of the reactor. When encapsulated in this way, the liquid is evaporated to adjust the concentration of the ripening solution and the solution in the stirring state for about 3 to 4 hours until the coating is aged. It can be used according to the required use by printing or printing various kinds of fibers, paper film, plastic and the like. In order to maintain various stability in encapsulation, antioxidants, UV absorbers and dispersion accelerators may be added.

The weight ratio of the synthetic resin binder: thermosensitive dye microcapsules in the dye-favoring composition is preferably 100: 10 or more, in particular 100: 10 to 15, and thus a thermosensitive dye may be applied without alteration.

Next, the fabric is printed and firstly dried using an automatic screen printing machine. It is possible to work on all fabrics regardless of the type of fabric by printing screen printing method, it is used by applying a thermosensitive dye prepared at 27 to 39 ℃. The primary drying temperature is 120 to 140 ℃, the drying time is preferably 10 to 30 minutes, and thus can be applied thermosensitive dye without alteration.

Next, the dye is fixed by secondary heating and dried secondly. Secondary drying temperature is 90 to 110 ℃, it is preferable to pass through the tunnel at a low speed, it is possible to apply a thermosensitive dye without alteration.

Finally, product inspection and packaging. The product is inspected and boxed with rolling and packing.

Thermosensitive dye in the present invention can be prepared up to 7 to 42 ℃, so that the mother can easily know when fever in the urine or body when taking care of children, it is set at 37 ℃ slightly higher than the body temperature (36 ℃), anyone can easily recognize Use a printing technique with added functionality. For babies, the use ranges from 27 to 39 ° C., but in the case of 27 ° C., the baby's body temperature can be predicted in the summer. For example, the condition of the child can be known by changing the temperature of the baby's skin during frequent air conditioner use and fan use. In the case of 37 to 39 ℃ can be predicted when the baby in the winter fever, for example, it can be seen by preliminary observation due to cold, body flesh, fever.

In the case of the temperature change of the temperature-sensitive product, the basic color starts to discolor slowly (color fades) at a temperature below 7 to 10 ° C at the set temperature, and then completely disappears or reaches a different color when the set temperature is reached. Changes to

[Example]

First, a thermosensitive capsule was prepared. 3 g of PSD-3G (3-Diethyl Amino-7-Dibenzoy1 Amino-Fluoran) as a dye and 3 g of PSD-V (3-Diethyl Amino-6-Methyl-7-Chloro-Fluoran), 3 g of bisphenol A as a developer After mixing 25 g of myristyl alcohol as a colorant and heat-melting, 10 g of epoxy resin is added thereto to prepare a primary mixture, and separately 10 g of polyvinyl alcohol (# 117) is dissolved in 190 g of water. It was kept at 80 ° C. The primary mixture was slowly added thereto while stirring the aqueous polyvinyl alcohol solution, thereby causing an emulsification reaction to form a capsule. The reaction was maintained for 3-4 hours to mature the capsules. In this process, considering the evaporation and concentration at the same time to obtain a pigment capsule was maintained so that the total solid content is about 30%.

Next, after the flat screen was plated, the dye-use was adjusted using a thermo capsule. The weight ratio of the synthetic resin binder: the thermosensitive capsule was 100: 14.

Next, the fabric was printed and firstly dried using an automatic screen printing machine. The primary drying temperature was 130 ° C. and the drying time was 20 minutes.

The dyes were then fixed by secondary heating and dried secondly. The secondary drying temperature was maintained at 100 ° C. and passed through the tunnel at low speed.

Next, after the product inspection, the box packaging by rolling and packing.

Comparative Example 1

Synthesis was carried out in the same manner as in Example, except that the weight ratio of the resin binder: temperature capsule was 100: 5.

Comparative Example 2

Synthetic resin binder: was prepared in the same manner as in the Example except that the weight ratio of the temperature capsule to 100: 20.

Comparative Example 3

The preparation was carried out in the same manner as in Example, except that the first drying temperature was 110 ° C.

[Comparative Example 4]

The preparation was carried out in the same manner as in Example, except that the primary drying temperature was set at 150 ° C.

[Comparative Example 5]

The preparation was carried out in the same manner as in Example, except that the first drying time was 5 minutes.

[Comparative Example 6]

The preparation was carried out in the same manner as in Example, except that the first drying time was 40 minutes.

Comparative Example 7

The preparation was carried out in the same manner as in Example, except that the secondary drying temperature was 80 ° C.

Comparative Example 8

The preparation was carried out in the same manner as in Example, except that the secondary drying temperature was 120 ° C.

[Test Example]

Example and Comparative Example For the product, the deterioration of the temperature capsule was tested, and the results are shown in Table 1. Deterioration was observed by magnifying under a microscope.

Deterioration Example No alteration Comparative Example 1 deterioration Comparative Example 2 deterioration Comparative Example 3 deterioration Comparative Example 4 deterioration Comparative Example 5 deterioration Comparative Example 6 deterioration Comparative Example 7 deterioration Comparative Example 8 deterioration

As can be seen in Table 1, the synthetic resin binder according to the present invention: the temperature-sensitive dye microcapsules of the weight ratio range, the first drying temperature range, the first drying time range, the second drying temperature range is found to be deteriorated temperature-sensitive capsules It was.

1 is a manufacturing process of the thermal dye printing fabric according to the invention.

Figure 2 is an enlarged photograph 5,000 times the thermosensitive capsule used in the present invention.

3 is an enlarged photograph of 20,000 times of the thermosensitive capsule used in the present invention.

Claims (4)

(1) forming a flat screen; (2) colorizing the dye using a microcapsule containing the thermosensitive dye, wherein the weight ratio of the synthetic resin binder: the thermosensitive dye microcapsules is 100: 10 to 15; (3) drying the fabric using an automatic screen printing machine and first drying, wherein the first drying temperature is 120 to 140 ° C., and the drying time is 10 to 30 minutes; (4) fixing the dye in a vapor deposition process and drying the secondary, wherein the secondary drying temperature is 90 to 110 ° C., and drying to pass the tunnel at a low speed; (5) A method for producing a thermosensitive dye printing fabric, comprising the steps of inspecting and packaging a product. The method of manufacturing a thermosensitive dye printing fabric according to claim 1, wherein a thermosensitive dye which discolors in a temperature range of 27 to 39 ° C is used. A temperature-sensitive dye printing fabric prepared according to any one of claims 1 and 2, characterized in that the color change in the temperature range of 27 to 39 ℃. The thermal dye printing fabric according to claim 3, which is used in baby products.

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