JPS5932586B2 - Printing method for synthetic fiber napped products - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for printing synthetic fiber napped products, and more particularly to a method for obtaining an animal hair conditioned product in which the hue of the tips of the napped synthetic fibers is rich in variation.

In recent years, there has been an increasing trend toward high-quality synthetic fiber napping products such as boa, seal, raschel, and bi-pile, and special coloring methods such as plain dyeing to printing, animal hair-like printing, and surface color dyeing are required. There is.

Conventionally, general textile printing technology has been widely applied to meet the demands of these luxury products, but conventional methods can only produce products with near-pure white tips, such as natural animal hair, or products with three-dimensional hue changes. It was difficult to obtain products with depth.

For natural animal hair preparations, methods such as colored discharge dyeing and white discharge dyeing in which the tips are removed using discharge dyes are also applied in some cases, but these discharge dyeing methods require that the fibers be completely uncolored. This method requires a large amount of discharge printing agent, and also requires the addition of an auxiliary agent for improving discharge performance, making the processing conditions harsh and extremely complicated.

Moreover, the biggest drawback of this discharge printing method is that it requires accessible dyes, and the number of them is extremely limited.

Furthermore, there are problems such as poor white-out stability and poor light fastness of white-out areas, and printing by the discharge printing method still has many deficiencies.

On the other hand, in conventional printing methods, printing is performed only from the tip of the napped fibers, so the hue near the roots of the napped fibers is light, which is why printed products have a deep hue. This was the cause of not being able to do so.

In addition, by printing only from the tips of the hair, it is difficult to obtain a product that has a three-dimensional feel and volume similar to natural animal hair preparations in which the hue changes from the top, middle, and bottom of the napped fibers.

The present inventors have arrived at the present invention as a result of various studies aimed at solving the drawbacks of the conventional methods.

An object of the present invention is to provide a method for obtaining a product whose bristles are nearly pure white and a napped product with an animal hair-like appearance in which the napped fibers have a variety of hue changes in the three-dimensional direction.

In the present invention, when printing synthetic fiber napped products, 30% or more of water and/or 0.0% surfactant are added to the napped products in advance.
After applying a paste solution with a viscosity of 1,500 to 15,000 cps containing a substance that inhibits the permeability of the colorant or a substance that has resisting or slow dyeing effects to the napped product from the tip side of the napped fiber. A synthetic fiber napped product, which is made by printing a printing paste with a viscosity of 1500 to 8000 cps containing a coloring agent from the back side of the napped product, and then steaming it without drying to transfer the coloring agent toward the tips of the napped fibers. It is in the printing method.

The term "synthetic fiber raised products" as used in the present invention refers to raised products such as boa, seal, bi-pile, and russell manufactured using so-called synthetic fibers such as acrylic fibers, modacrylic fibers, nylon fibers, and polyester fibers. .

Specific examples of the surfactants used in the present invention include the following anionic or nonionic surfactants.

Alkylbenzene sulfonate, dialkyl sulfosuccinate, alkylnaphthalene sulfonate, higher alcohol sulfate ester salt, alkyl phosphate salt, polyoxyethylene alkyl ether, polyoxyethylene alkyl phenol ether, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene amine ester , a pluronic type activator.

Particularly suitable as these surfactants are dialkyl sulfosuccinate-based anionic surfactants.

Substances that inhibit the penetration of colorants include surfactants that are ionically immiscible with coloring dyes, such as anionic surfactants such as naphthalene formaldehyde condensates for cationic dyes, and gels that are incompatible with printing pastes. Substances that cause chemical conversion, such as tannic acid for locust bean printing pastes, may also be used, and may be used in appropriate combinations depending on the type of dye and the type of sizing agent.

In addition, examples of substances that have resisting or slow dyeing effects on colored dyes include quaternary ammonium salts for cationic dyes, which are appropriately selected depending on the type of dye.

There is no particular problem with the sizing agent used in the printing paste, as long as it is a sizing agent used in general textile printing, and it may be selected depending on the auxiliary agent, dye, etc. used in combination.

Next, the present invention will be explained using an acrylic fiber napped product as an example.

It goes without saying that the present invention is not limited to napped acrylic fiber products.

First, a napped product is pretreated with a solution containing water and/or a surfactant, so that 30% or more of water and/or 0.001% or more of a surfactant are applied to the napped product.

Note that this solution may contain a dye or a small amount of a sizing agent and a pH regulator.

The amount of surfactant and water content need to be changed depending on the type of surfactant, type of fiber, structure of the napped product, length of napped fibers, etc., but if the amount deposited is less than the above amount, it will be applied in a later process. The transfer of the coloring agent toward the tips of the napped fibers is insufficient, making it difficult to obtain the desired effect.

For products with long napped fibers, good results can be obtained by using a surfactant with particularly good permeability and by applying a slightly larger amount of surfactant and water.

After the above treatment, in a dry or undried state, a coloring agent such as a cationic dye, a dispersed cationic dye, a PH regulator, etc. is added from the back side of the napped product to a viscosity of 1500 to 8000 cps.
Print with printing paste.

Subsequently, the dye is fixed by steaming it at 100° C. for 20 minutes while it is still undried.

The viscosity of the printing paste should be at least 15% from the viewpoint of colorant migration.
00 cps and a maximum of 8000 cp's is required.

If the viscosity is less than 1,500 cps, there is no adaptability depending on the type of printing machine, and if the viscosity exceeds 8,000 cps, the transfer of the colorant will be insufficient, making it difficult to achieve the object of the present invention.

In addition to the above-mentioned method, the following methods can be preferably adopted to provide further variation.

After pretreatment with water and/or surfactant and before printing with printing paste, it contains a substance that inhibits the permeability of the colorant from the base fabric surface or a substance that has a resisting or slow dyeing effect on the colorant. A size liquid having a viscosity of 1,500 to 15,000 cps is printed on the napped product from the tip side of the napped fibers to an arbitrary printing length of the napped fibers.

Subsequently, the viscosity 1500-8000c containing coloring agent, PH regulator, etc. is added from the back side of the napped product in a dry or undried state.
After printing with PS printing paste, then 100% without drying.
Steaming is carried out for 20 minutes at °C.

The paste containing a substance that inhibits the permeability of the colorant or a substance that has an anti-dye or slow-dyeing effect on the colorant may be one that does not contain a dye, or it may be a colored paste that contains a dye, a PH regulator, etc.

The viscosity of this size liquid can be changed within the range of 1,500 to 15,000 cps depending on the length of the tip of the napped fiber where the hue is changed.

If the viscosity is less than 1,500 cps, it is difficult to adjust the length to a desired hue, and if it exceeds 15,000 cps, it is difficult in terms of adaptability.

Furthermore, by appropriately changing the concentration of a substance that inhibits the permeability of the colorant or a substance that has an anti-dye or slow-dyeing effect on the colorant, the boundary between the colorant and the base fabric can be made from indistinct to clear. It can be changed.

Further, it is also possible to add a deep dyeing agent or a level dyeing penetrant to the printing paste that is printed from the back side of the napped product for the purpose of improving the permeability.

Also, by changing the solid content of the glue, the permeability can be improved to some extent.

That is, when a glue with a low solid content is used, good results can be obtained in terms of permeability.

Printing paste can be printed in various patterns, such as patterns, to create more variation.

After the evaporation treatment, it is washed with hot water or soaped for 20 to 30 minutes in a water bath containing an anionic or nonionic surfactant at 1 to 2 El/l at about 50°C, followed by a softening treatment and drying.

The material obtained in this manner is treated and then subjected to any desired finishing such as polisher finishing or shearing.

According to the present invention, only the tip of the napped fiber is close to pure white, and the hue of the tip is different from the root, and the hue concentration at the root of the napped fiber is high, and the concentration gradient is gentle toward the tip of the napped fiber. A wide variety of natural animal hair-like products can be obtained, including those in which the tips of the hair and the roots of the napped fibers have different hues, and the color gradually becomes lighter toward the middle of the napped fibers.

Next, the present invention will be explained by examples.

Note that "middle part of the example" means parts by weight.

Example 1 Bonnell yarn (acrylic fiber manufactured by Mitsubishi Rayon Co., Ltd.) 27
Pile length 1 knitted with a milling machine using 32MC
A 0 mm bore is immersed in an aqueous solution containing 1 g/l of a dioctyl succinate-based anionic surfactant, then the liquid is squeezed out uniformly to a squeezing rate of 60%, and then the back side is continuously printed in an undried state using a roller printing machine. Then, the following printing paste was printed and steamed at 1008C for 20 minutes without drying.

Next, soaping was performed for 20 minutes with an aqueous solution at 50°C containing 29/l of Lipotol BD (anionic surfactant manufactured by Nicca Chemical Co., Ltd.), followed by thorough washing with hot water and water, softening treatment, centrifugal dehydration, and drying in a dryer. .

When this material was processed and polished, it turned out to be an animal hair-like printed product in which approximately 1/4 to 115 of the ends of the pile hair were extremely white, and the base of the pile was brown, and the density gradually became lighter toward the ends of the pile hair. Obtained.

Comparing this product with a conventional textile dye dyed product that was discharged with Dechlorin (a discharge dye manufactured by Bayer), the product according to the present invention has a colorfastness of the tip of the hair and a light fastness of the tip of the hair, which are as follows. It was extremely excellent.

Example 2 Using the same yarn as in Example 1, the pile length was 1 using a milling knitting machine.
The 5th edition of Boa was organized.

This hairy product was immersed in an aqueous solution containing water and a chlorine alkylbenzenesulfonate anionic surfactant, and then the liquid was squeezed uniformly to give a squeezing rate of 30%, 60%, and 100%. Imprinting was done from the reverse side using the same method.

The subsequent steps were performed in the same manner as in Example 1.

As a result, it was confirmed that by printing from the base fabric surface in a state containing a surfactant and a water content of 30% or more, dye transfer was further promoted and an animal hair-like product could be obtained.

Example 3 After carrying out the same pretreatment using the same bore as used in Example 1, the following printing paste with a different viscosity was printed from the back side,
Steaming treatment was carried out at 100°C for 20 minutes without drying.

Subsequently, a final product was produced in the same manner as in Example 1.

The results obtained are as follows, and it was confirmed that a viscosity of the printing paste of 1,500 cps or more and up to about 8,000 cps is suitable for obtaining the desired effect.

Example 4 Using the same bore as used in Example 1, an aqueous solution containing 19/l of a polyoxyethylene alkylphenol ether surfactant was uniformly applied and then squeezed.

The reduction rate was 60%. A size solution containing 3% of quaternary ammonium salt and having a viscosity of 6000 cps was uniformly applied to the pile tip portion of this dyed object using a roller printing machine.

Subsequently, the printing paste of Example 1 was uniformly printed from the back side, and steamed at 100'C for 20 minutes without drying.

Thereafter, the process of Example 1 was carried out to complete the final product.

The appearance of the obtained dyed product was a hair product resembling natural animal hair, with a lighter density at the ends of the pile and a gradual change in hue from the roots to the ends.

Claims (1)

[Claims] 1. When printing a synthetic fiber napped product, apply 30% or more water and/or 001% or more surfactant to the napped product in advance, or add substances or colorants that inhibit the permeability of the colorant to the napped product in advance. After applying a paste with a viscosity of 1,500 to 15,000 cps that contains a substance that has resist dyeing and slow dyeing effects to the napped product from the tip side of the napped fibers, a printing paste with a viscosity of 1,500 to 8,000 cps that contains a coloring agent is applied from the back side of the napped product. stamp,
A method for printing synthetic fibers, which is then subjected to evaporation treatment to transfer the colorant toward the tips of the napped fibers.