CN115247008B

CN115247008B - Aqueous pigment ink for printing shoe material

Info

Publication number: CN115247008B
Application number: CN202210144522.3A
Authority: CN
Inventors: 余代英; 洪羚
Original assignee: Zhuhai Ninestar Management Co Ltd
Current assignee: Zhuhai Ninestar Management Co Ltd
Priority date: 2022-02-17
Filing date: 2022-02-17
Publication date: 2023-09-05
Anticipated expiration: 2042-02-17
Also published as: CN115247008A

Abstract

The application relates to an aqueous pigment ink for printing shoe materials, which comprises the following components in percentage by weight: 15-30% of organic pigment, 5-15% of ether organic solvent, 10-30% of alcohol organic solvent, 5-10% of aqueous polyurethane, 0.2-1.0% of aqueous wax emulsion and the balance of water. The water-based pigment ink provided by the application has good moisture retention, does not block a spray head, and has good fluency; and can be matched with digital shoe material mucilage in the market, has excellent combination property, good fastness, friction resistance, bending resistance, rich colors and water resistance after the surface is treated.

Description

Aqueous pigment ink for printing shoe material

Technical Field

The application relates to the technical field of printing, in particular to aqueous pigment ink for shoe material printing.

Background

With the development of digital ink-jet technology, the printing industry slowly shifts to the digital ink-jet direction, the traditional shoe material printing is mainly performed through screen printing, most of the used ink is oily ink, and the ink contains more organic solvents and has a certain harm to the environment and human bodies, so that the environment-friendly water-based ink is more hoped to replace the traditional oily ink in the market in recent years, and the pollution to the environment and the harm to the human bodies are reduced. On the other hand, the traditional screen printing process has the advantages that the color of the product is not rich, the product is single, personalized customization cannot be realized, on the contrary, the digital ink-jet scheme can realize the pursuit of the current young on individuation by utilizing the advanced ink-jet technology, the printing process is simple and quick, the printing can be performed on the shoe material only by inputting pictures into specific software and then printing the software through a printer, the color is rich and beautiful, and the precision is high. However, the current ink is easy to bleed, so that the pattern definition is poor, and the pattern is easy to wrinkle after being bent for many times.

Disclosure of Invention

In view of the above, the application provides the water-based pigment ink for printing the shoe material, which adopts a reasonable ink system, has excellent wetting and leveling properties, clear patterns, is not easy to bleed and is resistant to bending.

The embodiment of the application provides water-based pigment ink for printing shoe materials, which comprises the following components in percentage by weight: 15-30% of organic pigment, 5-15% of ether organic solvent, 10-30% of alcohol organic solvent, 5-10% of aqueous polyurethane, 0.2-1.0% of aqueous wax emulsion and the balance of water.

In one possible embodiment, the ink comprises the following components in weight proportion: 15-30% of organic pigment, 5-15% of ether organic solvent, 10-30% of alcohol organic solvent, 5-10% of aqueous aliphatic polyurethane, 0.2-0.8% of aqueous wax emulsion, 1-5% of surfactant and the balance of water.

In one possible embodiment, the aqueous wax emulsion comprises one of a modified polyethylene wax emulsion, a modified polypropylene wax emulsion.

In one possible embodiment, the alcoholic organic solvent includes at least one of ethylene glycol, propylene glycol, glycerol, 1, 2-propylene glycol, 1, 5-pentanediol, 1, 2-hexanediol, n-propanol, isopropanol, diethylene glycol, triethylene glycol, and tetraethylene glycol.

In one possible embodiment, the ether-type organic solvent includes at least one of diethylene glycol monobutyl ether, triethylene glycol monobutyl ether, glycerol ether, ethylene glycol monopropyl ether, ethylene glycol isopropyl ether, ethylene glycol monobutyl ether, ethylene glycol isobutyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monopropyl ether, propylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monopropyl ether, diethylene glycol monobutyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, and dipropylene glycol monopropyl ether.

In one possible embodiment, the mass ratio of the alcohol-based organic solvent to the ether-based organic solvent is 1 (2 to 4).

In one possible embodiment, the surfactant comprises an acetylenic diol surfactant.

In one possible embodiment, the ink further comprises a biocide, the biocide comprising 0.1% to 0.5% by weight of the ink.

In a possible embodiment, the ink satisfies at least one of the following characteristics a to d:

a. the viscosity of the ink is 7.0 cp-8.5 cp;

b. the surface tension of the ink is 28 mN/m-30 mN/m;

c. the conductivity of the ink is 0.2-2.0 mu m/cm;

d. the pH value of the ink is 7-9.

According to the aqueous pigment ink for printing the shoe material, the aqueous aliphatic polyurethane resin, the ether organic solvent and the alcohol organic solvent are matched, so that the formula can be matched with digital shoe material mucilage on the market, the binding performance is excellent, the fastness is good, the friction resistance and the bending resistance are high, the color is rich, the aqueous wax emulsion is added, the surface is water-resistant and bending-resistant after being treated, the production efficiency can be improved, and the aqueous pigment ink has good moisture retention performance on a light-finishing G5 printing head, does not block a spray head and has good fluency.

Detailed Description

The following description is of the preferred embodiments of the present application, and it should be noted that, for those skilled in the art, it is possible to make several improvements and modifications without departing from the principle of the embodiments of the present application, and these improvements and modifications are also considered as the protection scope of the embodiments of the present application.

In a first aspect, the application provides an aqueous pigment ink for printing shoe materials, which comprises the following components in percentage by weight: 15-30% of organic pigment, 5-15% of ether organic solvent, 10-30% of alcohol organic solvent, 5-10% of aqueous polyurethane, 0.2-1.0% of aqueous wax emulsion and the balance of water.

In the scheme, the aqueous pigment ink for printing the shoe material is matched with digital shoe material mucilage in the market by using the aqueous aliphatic polyurethane resin, the ether organic solvent and the alcohol organic solvent, so that the formula is excellent in combination property, good in fastness, abrasion-resistant, bending-resistant, rich in color, and water-resistant and bending-resistant after being added with the aqueous wax emulsion, the production efficiency can be improved, and the aqueous pigment ink has good moisture retention performance on a light-managing G5 printing head, does not block a spray head and is good in fluency.

As an alternative embodiment of the present application, the organic pigment includes at least one of a black organic pigment, a yellow organic pigment, a red organic pigment, and a blue organic pigment.

Alternatively, the organic pigment may include at least one of an azo pigment or a polycyclic pigment.

As an alternative embodiment of the present application, the azo pigment includes at least one of an azo lake pigment, an insoluble azo pigment, an azo condensation pigment, and a chelate azo pigment. The polycyclic pigment includes at least one of a phthalocyanine pigment, a viol-none pigment, an anthraquinone pigment, a quinacridone pigment, a dioxazine pigment, a thioindigo pigment, an isoindolinone pigment, and a quinophthalone pigment.

From the viewpoints of weather resistance and color saturation, the red or magenta organic pigment is preferably pigment red 19, pigment red 122, pigment red 146, pigment red 176, pigment red 184, pigment red 185, pigment red 202, pigment red 207, pigment red 209, pigment red 254, pigment red 269, pigment red 282, or the like;

the yellow organic pigment is preferably pigment yellow 17, pigment yellow 74, pigment yellow 83, pigment yellow 128, pigment yellow 139, pigment yellow 150, pigment yellow 151, pigment yellow 154, pigment yellow 155, pigment yellow 180, pigment yellow 181, pigment yellow 185, pigment yellow 213, or the like;

the blue organic pigment is preferably pigment blue 15, pigment blue 15:3, pigment blue 15:4, pigment blue 60, etc.

Alternatively, the organic pigment may be present in the ink in an amount of 15%, 17%, 18%, 20%, 22%, 25%, 28% or 30% by weight, but is not limited to the recited values, and other non-recited values within the range are equally applicable.

Alternatively, the black organic pigment may be selected from the group consisting of British diamond inkjet ink D71K, D K, switzerland Kernel OP-T, kabot 400K, and the like, and the black pigment dispersion is preferably Kabot 400K. The blue pigment dispersion may be selected from British diamond inkjet ink D71C, D C, switzerland Crain BG-PT, carbot 450C, etc., and preferably the blue pigment dispersion is Carbot 450C. The red pigment dispersion may be selected from British diamond inkjet ink D71M, D M, switzerland Kernel E5B-PT VP3565, U.S. Kabot 480V, etc., and the red pigment dispersion is preferably Kabot 480V. The yellow pigment dispersion may be selected from British diamond ink jet slurry D71Y, D Y, switzerland Kernel 4G-PT VP2669, U.S. Carbot 470Y, etc., and the yellow pigment dispersion is preferably Kernel 4G-PT VP2669.

As an alternative technical scheme of the application, the alcohol organic solvent comprises at least one of ethylene glycol, propylene glycol, glycerol, 1, 2-propylene glycol, 1, 5-pentanediol, 1, 2-hexanediol, n-propanol, isopropanol, diethylene glycol, triethylene glycol and tetraethylene glycol. Glycerol, hexanediol, propylene glycol are preferred.

Alternatively, the weight ratio of the alcohol organic solvent in the ink is controlled within a range of 10% -30%, specifically 10%, 15%, 18%, 20%, 25%, 28% or 30%, etc., but the present application is not limited to the recited values, and other non-recited values within the range are equally applicable.

As an alternative technical scheme of the application, the ether type organic solvent comprises at least one of diethylene glycol monobutyl ether, triethylene glycol monobutyl ether, glycerol ether, ethylene glycol monopropyl ether, ethylene glycol isopropyl ether, ethylene glycol monobutyl ether, ethylene glycol isobutyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monopropyl ether, propylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monopropyl ether, diethylene glycol monobutyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether and dipropylene glycol monopropyl ether. Preferably diethylene glycol monobutyl ether or triethylene glycol monobutyl ether.

Alternatively, the weight ratio of the ether-based organic solvent in the ink is controlled to be in the range of 5% to 15%, specifically 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 14% or 15%, etc., but the present application is not limited to the recited values, and other non-recited values in the range are equally applicable.

As an optional technical scheme of the application, the mass ratio of the alcohol organic solvent to the ether organic solvent is 1 (2-4). Specifically, the values may be 1:2, 1:2.5, 1:2.8, 1:3.0, 1:3.5, 1:3.8, or 1:4, etc., but other values within the above range are also possible, and the present application is not limited thereto. Experiments show that the mass ratio of the alcohol organic solvent to the ether organic solvent is 1 (2-4), so that the matching property of the ink and the white sizing agent of the shoe material can be improved, the printed pattern is not easy to infiltrate ink and lace, and the pattern outline is clear, so that the definition of the pattern is increased.

As an alternative embodiment of the present application, the aqueous polyurethane may exist in the form of a dispersion in the ink, and the weight ratio of the aqueous polyurethane in the ink may be specifically 5%, 6%, 7%, 8%, 9% or 10%, etc., but is not limited to the recited values, and other non-recited values within the range of the values are equally applicable.

Preferably, the aqueous polyurethane can be aqueous aliphatic polyurethane, and the weight ratio of the aqueous polyurethane in the ink is 5% -10%. In a specific embodiment, the aqueous polyurethane may be Japanese Mitsui WS-6110, japanese Mitsui WS-6021, japanese polyurethane Industrial WPC-101, of which Japanese Mitsui WS-6110 is preferred.

As an alternative technical scheme of the application, the water-based wax emulsion comprises one of modified polyethylene wax emulsion and modified polypropylene wax emulsion. In particular embodiments, the aqueous wax emulsion may be selected from one of the group consisting of Pick AQUACER 532, pick AQUACER 539, pick AQUACER 593, pick HORDAMER PE 35.

Alternatively, the weight ratio of the aqueous wax emulsion in the ink may be specifically 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9% or 1.0%, etc., but is not limited to the recited values, and other non-recited values within the range of values are equally applicable. Preferably, the aqueous wax emulsion is present in the ink at a weight ratio of 0.2% to 0.8%.

As an alternative embodiment of the present application, the surfactant includes an acetylenic diol surfactant. The surfactant can serve as a surface tension regulator, and the acetylenic diol surfactant has the effects of wetting and basic leveling.

The acetylenic diol surfactant may specifically be 2,4,7, 9-tetramethyl-5-decyne-4, 7-diol, 3, 6-dimethyl-4-octyne-3, 6-diol, 3, 5-dimethyl-1-hexyne-3-ol, or the like. More specifically, one or more of Surfynol 420, surfynol 440, surfynol 465, surfynol 485, BYK-019, BYK-028, BYK-141, foamStar SI 2250, AF-103, TEGO 425, TEGO260, TEGO245, TEGO250 may be used. Particularly preferred are Surfynol 465 and TEGO 425.

Optionally, the weight ratio of the surfactant in the pigment ink is 1% to 5%, specifically 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5% or 5%, etc., but is not limited to the recited values, and other non-recited values within the range are equally applicable.

As an optional technical scheme of the application, the ink also comprises the following components in percentage by weight: 0.1 to 0.5 percent of bactericide which can be isothiazolinone bactericide, and can be specifically selected from at least one of American Dow bactericide BIOBAN BIT-10, american Dow bactericide BIOBAN BIT-20, american Olin bactericide PROXEL GXL and American Olin bactericide PROXEL CMG.

Alternatively, the weight ratio of the bactericide in the ink may be specifically 0.1%, 0.15%, 0.2%, 0.25%, 0.3%, 0.35%, 0.4%, 0.45% or 0.5%, but is not limited to the recited values, and other non-recited values within the range of values are equally applicable.

The balance of water can be at least one of tap water, deionized water and distilled water, preferably the water is deionized water, so that impurities in the ink can be reduced, and the influence on other components in the ink can be reduced.

As a preferable technical scheme of the application, the ink comprises the following components in percentage by weight: 15-30% of organic pigment, 5-15% of ether organic solvent, 10-30% of alcohol organic solvent, 5-10% of aqueous aliphatic polyurethane, 0.2-0.8% of aqueous wax emulsion, 1-5% of surfactant, 0.1-0.5% of bactericide and the balance of water.

The following examples are provided to further illustrate embodiments of the application. The embodiments of the present application are not limited to the following specific embodiments. The modification can be appropriately performed within the scope of protection.

The percentages of the components mentioned above and below are weight percentages, and the percentages of the components are percentages of the total weight of the pigment ink except for the specific descriptions.

1. Preparation of aqueous pigment ink

Sequentially adding organic solvents into deionized water respectively, stirring for 10-20 minutes, and uniformly mixing; adding surfactant and bactericide, stirring for 10-20 min, and mixing well; adding the aqueous wax emulsion, stirring for 5-10 minutes, adding the aqueous aliphatic polyurethane, stirring for 20-40 minutes, and uniformly mixing; adding organic (inorganic) pigment dispersion, stirring for 60-120 min, mixing, and filtering with 0.6 μm filter membrane to obtain final ink.

Examples 1 to 4:

blue (C), red (M), yellow (Y), black (BK) pigment inks were formulated according to the above preparation method and the weight percentage composition shown in table 1 below.

TABLE 1

Comparative examples 1 to 4:

blue (C), red (M), yellow (Y), black (BK) pigment inks were formulated according to the above preparation method and the weight percentage composition shown in table 2 below.

TABLE 2

Test item

(1) Physicochemical parameter testing, test results are shown in table 3 below:

TABLE 3 Table 3

(2) Stability test

The pigment ink prepared in table 1 is respectively subjected to printing test by a light-regulating G5 nozzle 4-head elliptical machine, the printing medium is special shoe material, the smoothness (continuous printing for 5 hours, solid color and picture testing) of 4PASS printing is tested, the state of the nozzle after the ink stands by for 1 day, the matching property with white paste (whether the outline of the picture is clear or not and whether color bleeding exists between each color or not is observed), the bending resistance test is performed for 1000 times by using a professional instrument test, the abrasion resistance test is performed by using a Y571 type rubbing fastness tester, whether the color fading and the color staining of the rubbing cloth are observed or not, and the test results are shown in the following table 4:

TABLE 4 Table 4

From the above test results, the following conclusions can be found:

examples 1 and 2 and comparative examples 1 and 2 found that when the ratio of the ether organic solvent to the alcohol organic solvent in the formulation is greater than 1:2, the ink was not acceptable in the machine fluency test and the standby effect was also deteriorated; when the ratio of the ether organic solvent to the alcohol organic solvent in the formula is less than 1:4, the printed pattern has unclear outline and each color of the picture can be mutually permeated, so the ratio of the ether organic solvent to the alcohol organic solvent in the formula is 1: the best effect is obtained in (2-4).

Examples 3 and 4 and comparative examples 3 and 4 can find that the addition of the aqueous aliphatic polyurethane resin can improve the friction resistance and the bending resistance of the finished product, and when the content of the aqueous aliphatic polyurethane resin accounts for 5% -15% of the whole formula system, the printing smoothness and the standby property of the ink are not affected, and other properties are not affected.

Example 1 and comparative example 5 have found that the addition of an aqueous wax emulsion can effectively improve the wash fastness of the finished printed product.

In conclusion, the water-based pigment ink for printing the shoe material has good fluency and standby performance on a light-finishing G5 spray head, and can be matched with digital shoe material mucilage on the market by optimizing the proportion of each material in the formula, so that the water-based pigment ink has excellent combination performance, good fastness of finished products, friction resistance, bending resistance, bright and beautiful printing color and water resistance.

While the application has been described in terms of the preferred embodiment, it is not intended to limit the scope of the claims, and any person skilled in the art can make many variations and modifications without departing from the spirit of the application, so that the scope of the application shall be defined by the claims.

Claims

1. An aqueous pigment ink for printing shoe materials is characterized by comprising the following components in percentage by weight: 15-30% of organic pigment, 5-15% of ether organic solvent, 10-30% of alcohol organic solvent, 5-10% of aqueous aliphatic polyurethane, 0.2-1.0% of aqueous wax emulsion and the balance of water, wherein the mass ratio of the ether organic solvent to the alcohol organic solvent is 1 (2-4); the ether organic solvent is selected from diethylene glycol monobutyl ether or triethylene glycol monobutyl ether.

2. The aqueous pigment ink according to claim 1, wherein the ink further comprises the following components in weight ratio: 1 to 5 percent of surfactant.

3. The aqueous pigment ink according to claim 1 or 2, wherein the aqueous wax emulsion comprises one of a modified polyethylene wax emulsion and a modified polypropylene wax emulsion.

4. The aqueous pigment ink according to claim 1 or 2, wherein the alcohol-based organic solvent comprises at least one of ethylene glycol, propylene glycol, glycerol, 1, 2-propylene glycol, 1, 5-pentanediol, 1, 2-hexanediol, n-propanol, isopropanol, diethylene glycol, triethylene glycol, and tetraethylene glycol.

5. The aqueous pigment ink according to claim 2, wherein the surfactant comprises an acetylenic diol surfactant.

6. The aqueous pigment ink according to claim 1 or 2, further comprising a bactericide, wherein the bactericide is present in the ink in an amount of 0.1 to 0.5% by weight.

7. The aqueous pigment ink according to claim 1 or 2, characterized in that the ink meets at least one of the following characteristics a-d:

a. the viscosity of the ink is 7.0 cp-8.5 cp;

b. the surface tension of the ink is 28 mN/m-30 mN/m;

c. the conductivity of the ink is 0.2-2.0 mu m/cm;

d. the pH value of the ink is 7-9.