KR20110001340A - Process of high-fastness dyeing for molding goods using paper mulberry fiber - Google Patents

Abstract

PURPOSE: A method for dyeing the high dye fastness of a paper mulberry tree fiber molding shaping water securing the excellent color fastness is provided to offer the paper mulberry tree fiber molding shaping water of the high value added with the various colors. CONSTITUTION: A solution ratio of a salt bath is put into paper mulberry fiber. The temperature of the salt bath is increased in the speed of minute to figure 40~60. In order that for the concentration of the sodium carbonate, the sodium carbonate additionally puts into in the salt bath. The paper mulberry tree fiber is dyed. The paper mulberry tree fiber and binder solution are mixed with together. The mixture puts into in the mold for molding. A cubic shape is molded by paper mulberry fiber molding.

Description

Process of High-Fastness Dyeing For Molding Goods Using Paper Mulberry Fiber}

The present invention relates to a dyeing method of a mulberry fiber molding moldings and to a dyeing method capable of having excellent dyeing fastnesses.

In the dyeing method of the present invention, the mulberry fiber molded molding to be a chlorine is a molded article exhibiting the feel and efficacy of Hanji as a molded article having a three-dimensional structure and similar physical properties to synthetic resin.

The mulberry fiber moldings are environmentally friendly and harmless to the human body and thus are the most suitable materials for the recent well-being trend. In response to the market demand and necessity for this, the present applicant has been granted a patent for a method of manufacturing a Hanji molded article using the Doc-fiber molding molding method of Korea Patent No. 10-0741447. In addition, by manufacturing molded articles that show the best feel and efficacy of Hanji, it can protect the human body from the influence of environmental hormones emitted from various plastic products and provide the benefits of softness, warmth and emotional stability unique to Hanji. There was no mention of dyeing associated with the provision of aesthetic elements to increase added value.

In general, the method of dyeing Hanji is a method of dyeing raw paper (dough fibers) or dyeing the finished Hanji, and in the Republic of Korea Patent No. 10-0473200 "Waterdrop pattern of Hanji and its manufacturing method" by spraying the dye from the side surface It is characterized by manufacturing the hanji of the water droplets pattern using the difference in chromaticity due to the high and low, but no technical improvement on the fastness of dyeing is presented.

On the other hand, the Republic of Korea Patent No. 10-0640224 "Underwater dyeing method of color Hanji" proposes a method of dropping the dye in the process solution (in water) to color by diffusion, but may achieve a variety of effects, but the color itself The method for control was not considered and there was no mention of improving the color fastness of the dye.

In addition, the Republic of Korea Patent No. 10-0593559 "Hanji for the surface finishing material and its manufacturing method" using a reactive dye in expressing the color by controlling the mixing ratio between the pre-dyed long fiber 10% to 40% of the weight of the hanji material It is encouraging, but it does not provide a solution to the color fastness, which is the biggest problem when using the dye.

In addition, the Republic of Korea Patent No. 10-0430418 is one of the patents for the manufacturing method of the color paper, the patent is made of two layers of wetlands of different colors made of dyed paper fibers and made a multi-layer wet paper and dried it to a predetermined color A method for manufacturing colored paper is disclosed, but according to the method, two types of wetlands having different colors must be grassed and then laminated, and a plurality of paper containers are prepared to dye the paper fibers with different colors for each paper container. There was a disadvantage in that the number of processes was large. Of course, the patent also does not mention the fastness of the dyeing, it will be said that the application itself is not applicable to the doc fiber molding by the molding method.

Meanwhile, Korean Patent Laid-Open Publication Nos. 2003-0018033 and 2007-0008771 refer to the dyeing of medicinal fiber using natural dyes such as prunus, gardenia, quince, safflower and ocher, but it is not suitable for mass production of Doc fiber moldings by molding method. In addition, as is well known, most natural dyeings require user attention in dyeing fastnesses.

Accordingly, an object of the present invention is to provide a high fastness dyeing method to have excellent dyeability and color fastness to three-dimensional Doc fiber molding molding without significantly changing the duct fiber molding manufacturing process by the existing molding method.

Therefore, according to the present invention, peeling the bark, boiled, washed and pounded to prepare the mulberry fiber mulberry fiber preparation step;

Reactive dye 0.5 ~ 3% o.w.f. And a salt bath preparation step of putting in water so that 20-70 g / L of forget-me-not is completely stirred for about 5 to 10 minutes, and heating the salt solution to 30 to 40 ° C.

Sodium bicarbonate was added to the prepared salt bath so that the liquid ratio was 20: 1 to 50: 1, and the temperature was raised to 40 to 60 ° C at a rate of 1 to 2 ° C / min while slowly stirring. A dyeing step of additionally adding a dye to a concentration of 5 to 40 g / l and then washing with water; And

After the dyeing step is mixed with the duct fibers and the binder liquid is put into a molding mold having a certain shape and then thermally compressed to form a three-dimensional Doc fiber molding molding comprising a molding process comprising a high fastness of the doc fiber molding molding Dyeing methods are provided.

Hereinafter, the present invention will be described in more detail.

The high fastness dyeing method of the molding of the mulberry fiber molding of the present invention relates to a method of dyeing a mulberry fiber molding molding having a three-dimensional structure and having physical properties similar to that of synthetic resin as a molded article exhibiting the feel and efficacy of Hanji. It relates to a dyeing method that can be.

The dyeing method of the present invention consists of a preparation stage, a dye bath preparation stage, a dyeing stage, and a molding molding step, in order to have excellent dyeing fastness and freely expressing various colors so as not to change the manufacturing process of the existing mulberry fiber moldings. Before molding, the molding process is performed after dyeing process using dyes with excellent dyeing fastness in the raw fiber state.

First, the preparation of the mulberry fiber prepares the mulberry fiber which is the main raw material of the mulberry fiber molding molding, the mulberry is taken and peeled off, and then the mulberry bark is boiled, washed and pounded to prepare the mulberry fiber.

After the dye bath preparation, reactive dye 0.5 ~ 3% o.w.f. And 20 to 70 g / l of forget-me-not and put into water for 5 to 10 minutes to make a salt bath and keep it at 30 to 40 ℃.

According to the condition of the bark bark as the raw material, the mulberry fiber in the present invention is because the cellulose constituting the mulberry fiber is non-uniform, so that the use of a general dye decreases the fastness. Therefore, in the present invention, a reactive dye is used, and in particular, it is preferable to use at least one of a di- and tri-functional low-temperature reactive dyes. It is preferable to express uniform dyeing property on medicinal fiber by using SUPRA TYPE which shows moderate tendency of absorption of VS TYPE which has a high speed of absorption. In particular, by using a dye having two or three reactors having one or more of vinyl sulfone group (Vinyl Sulfone) and chlorotriazine group (Chlorotriazine), without generating substances such as carcinogenic amines before and after the mulberry fiber molding process It is desirable that there is no change in color. As described above, a uniform color can be obtained by reducing the speed of the absorption of the reactive dyes and the mulberry fibers in the first and second suction sections (manganese) and the second and second sections (sodium carbonate), and the dyes resistant to water washing, friction fastness, light fastness and thermoforming. It is more preferable to select the dyeing in the present invention.

The reactive dyes should be stable at the temperature of the molding process, considering that the molding process of the mulberry fiber molding is performed at 100 to 200 ° C, wherein the reactive dyes dyeing on the mulberry fiber are stable in color change, This means that there is a reactive dye dyed in the mulberry fiber as it is without the generation of substances harmful to the human body and substances harmful to the environment. In particular, it is important to select a dye that does not generate harmful substances such as carcinogenic amines. When selecting dyes, the combination should be composed in consideration of compatibility between dyes in selecting three primary colors of yellow, blue and red, and various colors by securing basic information such as dyeing behavior, dyeing rate and color concentration of Doc fiber It should be used for expression.

In the dyeing step, the medicinal fiber is added to the prepared salt bath so that the liquid ratio is 20: 1 to 50: 1, the temperature is raised to 40 to 60 ° C. at a rate of 1 to 2 ° C./min while slowly stirring, and then maintained for 20 to 60 minutes. Add sodium carbonate to the salt bath so that it has a concentration of 5 to 40 g / l, dye and wash.

After the dyeing step, a molding process is performed. The Doc fiber and the binder solution are mixed to be put into a molding mold having a certain shape, and then thermo-compressed to form a three dimensional fiber molding molding. The mulberry fiber moldings obtained by dyeing the mulberry fibers by the molding according to the present invention exhibit excellent fastness to dry friction fastness 4 to 5, wet friction fastness 3 to 4 and daylight fastness 3 to 4 .

The effect of the present invention can not only secure excellent dyeing fastness in the manufacture of the mulberry fiber moldings, it was also possible to obtain a high value-added mulberry fiber moldings by expressing various colors freely.

The following examples are given as non-limiting examples of the high color fastening method of the mulberry fiber molding of the present invention.

[Examples 1-3]

Peel off the bark, boil, wash, and tap to prepare the mulberry fiber. Reactive dyes should be selected from dyes of SUPRA TYPE, which are bifunctional low-temperature reactive dyes with high uniform dyeing and high dyeing ratio, considering the environmental and economical efficiency, except for dyes prohibited by carcinogenic amines. Each was selected.

The reactive dye 2% o.w.f. And prepared in a salt bath by stirring for about 10 minutes to prepare a salt bath by stirring for about 10 minutes, and then put the prepared mulberry fiber in a liquid ratio of 30: 1 to the prepared salt bath while slowly stirring to 1 ℃ After heating up to 60 ° C./min at 30 ° C. and maintaining for 30 minutes, additionally added sodium carbonate to the salt bath to a concentration of 10 g / l, followed by dyeing, and washing with water five times to remove unfixed dye from the surface of the mulberry fiber. After performing the process, remove the water by pressing method and seal the water so that it does not dry out in the remaining water, and keep it in a cool place without direct sunlight so that it can be used in the molding process. Avoid it.

After the dyeing, the doc fiber and the binder solution were mixed and introduced into a molding mold having a certain shape, and then, the molding temperature was adjusted to 100-200 ° C., and thermally compressed to form a three dimensional fiber molding.

The fastness of the molded article of the molded examples 1 to 3 was measured and shown in Table 1. The molded articles of Examples 1 to 3 showed excellent fastness to dry friction fastness 4 to 5 grade, wet friction fastness 3 to 4 grade, daylight fastness 3 to 4 grade.

dyes Gun friction fastness Wet Friction Fastness Daylight fastness Example 1 Yellow 4-5 3-4 4 Example 2 Blue 4-5 3-4 3-4 Example 3 Red 4-5 3-4 3-4

1 is a view showing the results of measuring the color concentration (K / S) of the moldings of Examples 1 to 3 showing that there is no change in color by molding at high temperature as described above. The maximum absorption wavelength values are shown in Table 2 below.

Dye Absorption wavelength (λmax) Molding Molding After molding Example 1 YELLOW 430 nm 430 nm Example 2 BLUE 630 nm 620 nm Example 3 RED 550 nm 550 nm

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the result of having measured the color density (K / S) of the molded object of Examples 1-3.

Claims (4)

Peel off the bark, boiled, washed and pounded to prepare the mulberry fiber mulberry fiber preparation step; Reactive dye 0.5 ~ 3% o.w.f. And a salt bath preparation step of adding salt to 20 to 70 g / l of forget-me-not and stirring it for 5 to 10 minutes to maintain a salt bath at 30 to 40 ° C .; Sodium bicarbonate was added to the prepared salt bath so that the liquid ratio was 20: 1 to 50: 1, and the temperature was raised to 40 to 60 ° C at a rate of 1 to 2 ° C / min while slowly stirring. A dyeing step of additionally adding a dye to a concentration of 5 to 40 g / l and then washing with water; And After the dyeing step is mixed with the duct fibers and the binder liquid is put into a molding mold having a certain shape and then thermally compressed to form a three-dimensional Doc fiber molding molding comprising a molding process comprising a high fastness of the doc fiber molding molding Dyeing method. The method of claim 1, wherein the reactive dye is a high fastness dyeing method of the mulberry fiber moldings, characterized in that any one or more of the di- and tri-functional low-temperature reactive dyes. The method of claim 2, wherein the reactive dye has a high fastness dyeing of the mulberry fiber moldings, characterized in that the dye having two or three reactors having one or more of the vinyl sulfone group (Vinyl Sulfone) and chlorotriazine group (Chlorotriazine) Way. The method according to claim 1, wherein the mulberry fiber molding molded article has a high friction fastness of dry friction 4-5 grade, wet friction fastness 3-4 grade and daylight fastness grade 3-4.

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