CN114989663B

CN114989663B - Blue ink and preparation method thereof

Info

Publication number: CN114989663B
Application number: CN202110225905.9A
Authority: CN
Inventors: 唐俊辉; 田胥鹏
Original assignee: Dangnali Guangdong Printing Co ltd
Current assignee: Dangnali Guangdong Printing Co ltd
Priority date: 2021-03-01
Filing date: 2021-03-01
Publication date: 2023-07-07
Anticipated expiration: 2041-03-01
Also published as: CN114989663A

Abstract

The invention provides a blue ink and a preparation method thereof. Wherein the blue ink comprises the following raw materials in percentage by weight: 53 to 57 percent of resin oil, 2 to 3 percent of nano calcium, 7.5 to 9.5 percent of phthalocyanine blue, 1 to 2 percent of phthalocyanine green, 1.5 to 2.5 percent of polyethylene wax, 12.5 to 14.5 percent of soybean oil, 13.5 to 15.5 percent of silver paste and 1.5 to 2.5 percent of drier. The color of the special color ink for the sea weed blue is high in vividness, the color is yellowish green, and the printing performance is excellent.

Description

Blue ink and preparation method thereof

Technical Field

The application relates to the technical field of ink, in particular to blue ink and a preparation method thereof.

Background

The color target of spot color ink in the offset lithography industry is mainly based on Pantone, DIC, TOYO, HKS, DIN and other color scales. However, the colors of the color scales are specific, and cannot meet the requirements of all printed products in actual production.

The matters in the background section are only those known to the inventors and do not, of course, represent prior art in the field.

Disclosure of Invention

The invention aims to provide novel Blue ink (which is called as a special color ink of Renilla Blue) and a preparation method thereof.

The blue ink provided by the invention comprises the following raw materials in percentage by weight:

53 to 57 percent of resin oil, 2 to 3 percent of nano calcium, 7.5 to 9.5 percent of phthalocyanine blue, 1 to 2 percent of phthalocyanine green, 1.5 to 2.5 percent of polyethylene wax, 12.5 to 14.5 percent of soybean oil, 13.5 to 15.5 percent of silver paste and 1.5 to 2.5 percent of drier.

In some embodiments of the invention, the drier includes a type a-drier manganese and a type B-drier cobalt.

In some embodiments of the invention, the A-dryer manganese is present in the blue ink in an amount of 1 to 1.5% and the B-dryer cobalt is present in the blue ink in an amount of 0.5 to 1%.

In some embodiments of the present invention, the blue ink comprises the following raw materials in weight percent: 54 to 56 percent of resin oil, 2.3 to 2.8 percent of nano calcium, 7.8 to 9.2 percent of phthalocyanine blue, 1.1 to 1.7 percent of phthalocyanine green, 1.8 to 2.2 percent of polyethylene wax, 13 to 14 percent of soybean oil, 14.1 to 15.2 percent of silver paste and 1.8 to 2.2 percent of drier.

In some embodiments of the present invention, when the printing material is white double-sided copper board paper, the color value of the blue ink after printing is L53.26, a-31.70, b-31.70, C44.8, H225.0 degrees; color difference range: the color difference delta E is less than 1.

The preparation method of the blue ink provided by the invention comprises the following steps:

s1: mixing and stirring 53-57% of resin oil, 2-3% of nano calcium, 7.5-9.5% of phthalocyanine blue, 1-2% of phthalocyanine green, 1.5-2.5% of polyethylene wax, 12.5-14.5% of soybean oil and 13.5-15.5% of silver paste until the color is uniform;

s2: grinding the pigment to the required fineness after the pigment obtained in the step S1 is fully wetted;

s3: adding 1.5-2.5% drier into the pigment obtained in the step S2, and uniformly stirring.

In some embodiments of the invention, in step S2, the pigment is milled to a fineness of <10 μm.

In some embodiments of the invention, step S2 comprises: the pigment obtained in step S1 was left for 4 hours or more to sufficiently wet the pigment.

In some embodiments of the invention, the stirring time in step S1 and step S3 is 30-50 min.

The color of the special color ink for the sea weed blue is high in vividness, the color is yellowish green, and the printing performance is excellent.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate and explain the exemplary embodiments of the disclosure and together with the description serve to explain the disclosure, and do not constitute an undue limitation on the disclosure. In the drawings:

FIG. 1 is a schematic process flow diagram of a process for preparing a specific color ink of Renilla blue according to an embodiment of the present invention.

FIG. 2 is a schematic color diagram of a specific color ink of Renilla blue according to an embodiment of the present invention.

Fig. 3 is a color schematic of Pantone 10278C.

FIG. 4 (a) is a target blue pattern, and (b) and (C) are schematic diagrams of sample sheets prepared by using the blue spot color ink and Pantone10278C of the present invention, respectively.

Detailed Description

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.

The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

The following detailed description of specific embodiments of the invention is provided in connection with the accompanying drawings and examples in order to provide a better understanding of the aspects of the invention and advantages thereof. However, the following description of specific embodiments and examples is for illustrative purposes only and is not intended to be limiting of the invention.

The invention provides a special color printing ink for a sea weed, which comprises the following raw materials in percentage by weight: 53 to 57 percent of resin oil, 2 to 3 percent of nano calcium, 7.5 to 9.5 percent of phthalocyanine blue, 1 to 2 percent of phthalocyanine green, 1.5 to 2.5 percent of polyethylene wax, 12.5 to 14.5 percent of soybean oil, 13.5 to 15.5 percent of silver paste and 1.5 to 2.5 percent of drier.

The nano calcium in the invention refers to nano calcium carbonate, and silver paste is thick paste of a mechanical mixture consisting of high-purity (99.9%) metal silver particles, a binder, a solvent and an auxiliary agent.

Wherein the drier may include a type A-drier manganese and a type B-drier cobalt. Optionally, the content of the A-type drier manganese in the blue spot color printing ink is 1-1.5%, and the content of the B-type drier cobalt in the blue spot color printing ink is 0.5-1%.

The preferred formula of the special color printing ink for the sea weed blue provided by the invention is as follows: 54 to 56 percent of resin oil, 2.3 to 2.8 percent of nano calcium, 7.8 to 9.2 percent of phthalocyanine blue, 1.1 to 1.7 percent of phthalocyanine green, 1.8 to 2.2 percent of polyethylene wax, 13 to 14 percent of soybean oil, 14.1 to 15.2 percent of silver paste and 1.8 to 2.2 percent of drier.

The printing stock applicable to the special color ink for the firefly blue is white double-sided copper board paper. The color values of the special color ink for the sea-fluorescence blue after printing are L53.26, a-31.70, b-31.70, C44.8 and H225.0 degrees; color difference range: the color difference delta E is less than 1; measurement setting: measurement mode M1, illuminant/viewing angle D50/2, ΔE mode CIE Δ2000. There may be minor variations in the color value of the substrate depending on the production lot, but the color value of the marine blue spot color ink of the present application after printing is within the above range.

As shown in FIG. 1, the invention provides a method for preparing the special color printing ink for the blue of the sea weed, which comprises the following steps of S1 to S3:

s1: mixing resin oil, nano calcium, phthalocyanine blue, phthalocyanine green, polyethylene wax, soybean oil and silver paste, and stirring until the color is uniform.

Optionally, the above pigment is stirred using a planetary stirrer for 30 to 50 minutes until the color is uniform.

S2: after the pigment obtained in step S1 is sufficiently wetted, the pigment is ground to a desired fineness.

Optionally, the mixed pigment is left for more than 4 hours to fully wet the pigment obtained in step S1.

The special color ink is prepared by adopting a semi-finished product or a base ink of a finished product, and the special color ink of the firefly blue is prepared by adopting pigment and is required to be ground to a certain fineness so as to meet the printability requirement. The pigment may be ground to a fineness of <10 μm using a three-roll mill. Typically, grinding is performed 2 times to achieve the desired result.

S3: and (3) adding the drier into the pigment obtained in the step (S2), and uniformly stirring to obtain the pigment.

And similar to the step S1, the stirring time is generally 30-50 min, and the stirring is uniform.

After the ink is prepared, removing bubbles generated during ink stirring through a three-roller grinder, and packaging.

The invention will now be described with reference to specific examples. The values of the process conditions taken in the examples below are exemplary and can be obtained in the ranges indicated in the foregoing summary, and for process parameters not specifically identified, reference may be made to conventional techniques. The detection methods used in the examples described below are all conventional in the industry, except for the specific descriptions. Reagents and apparatus used in the technical scheme provided by the invention are available from conventional channels or markets unless otherwise specified.

Examples

The preparation method of the special color printing ink for the sea-weed blue comprises the following specific steps:

first, the following materials were put into an ink stirring tank in the proportions shown in table 1: resin oil, nano calcium, phthalocyanine blue, phthalocyanine green, polyethylene wax, soybean oil and silver paste. Then the pigment is stirred by a planetary stirrer for 40min until the color is uniform, and the pigment is fully wetted by standing for 5 h. And setting the pressure of a three-roller grinder according to the fineness requirement, and grinding for 2 times by adopting the three-roller grinder. Again, the following auxiliary agents are added in proportion and stirred for 30min until uniform: manganese as A-type drier and cobalt as B-type drier.

Table 1 raw materials used in the examples

And measuring 0.06 Cubic Centimeter (CC) of special color printing ink of the stirring uniform sea weed blue by using an IGT quantitative instrument, adding the special color printing ink to an ink homogenizing rod of a color spreading instrument CB225A, starting ink homogenizing for 70-90 seconds, and spreading a sample after the printing ink is rolled uniformly. The sample spreading is detected by using X-riteeXact, the target values of the red fluorescent blue spot color ink are set to be L53.26, a is 31.70, b is 31.70, C is 44.8 and H is 225.0 degrees, and the color difference value is set to be delta E < 1. Measurement setting: measurement mode M1, illuminant/viewing angle D50/2, ΔE mode CIE Δ2000. The color and printability of the ink were determined, the color values are shown in FIG. 2, and the color value measurements are shown in Table 2. The fineness, viscosity and fluidity of the ink were measured simultaneously using a fineness plate, a viscosity meter and a fluidity meter. Finally, the dryness of the ink was determined by a drying experiment. The measurement results are shown in Table 2.

Table 2 example ink performance parameters

As can be seen from Table 2, the Renilla blue spot color ink provided by the invention has excellent printing performance.

Fig. 4 (a) shows a target blue pattern with color values L53.26, a-31.70, b-31.70, C44.8, H225.0. For the target blue pattern shown in FIG. 4 (a), a sample printed with the color ink for red fluorescent blue of the present invention is shown in FIG. 4 (b). It can be seen that the color of the swatch shown in fig. 4 (b) is very similar to the color of the target blue pattern shown in fig. 4 (a).

Pantone10278C is a blue spot color of Pantone advanced metallic colors, and the Pantone10278C color value is: l:52.1, a: -21.1, b: -29.9, C:36.6, H:234.8 °. The color is shown in FIG. 3. Which is the common color of the existing common color ruler closest to the target blue pattern color shown in fig. 4 (a).

For the target blue pattern shown in fig. 4 (a), a preview sample using Pantone10278C color output by the image processing software is presented in fig. 4 (C). It can be seen that there is a large difference between the color of the swatch shown in fig. 4 (c) and the color of the target blue pattern shown in fig. 4 (a) (Δe=7.3).

Therefore, in this embodiment, the blue pattern shown in fig. 4 (a) cannot meet the printing requirement by using the conventional Pantone10278C spot color, and the objective can be achieved by using the blue spot color ink of the present invention.

As can be seen from FIGS. 2 to 4, the color of the red fluorescent blue spot ink of the present invention is high in vividness and has a yellowish green hue, compared with Pantone 10278C.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The blue ink is characterized by comprising the following raw materials in percentage by weight:

55.35% rosin modified phenolic resin oil, 2.66% nano calcium, 8.24% phthalocyanine blue, 1.39% phthalocyanine green, 2% polyethylene wax, 13.5% soybean oil, 14.86% silver paste, 1.5% A-type drier manganese and 0.5% B-type drier cobalt;

when the printing stock is white double-sided copper board paper, the color value of the blue ink after printing is L53.26, a is 31.70, b is 31.70, C is 44.8 and H is 225.0 degrees; color difference range: the color difference delta E is less than 1.

2. A method for preparing blue ink, comprising:

s1: 55.35 percent of rosin modified phenolic resin oil, 2.66 percent of nano calcium, 8.24 percent of phthalocyanine blue, 1.39 percent of phthalocyanine green, 2 percent of polyethylene wax, 13.5 percent of soybean oil and 14.86 percent of silver paste are mixed and stirred until the color is uniform;

s3: adding 1.5% of A-type drier manganese and 0.5% of B-type drier cobalt into the pigment obtained in the step S2, and uniformly stirring;

when the printing stock is white double-sided copper board paper, the color value of the blue ink is L53.26, a-31.70, b-31.70, C44.8 and H225.0 degrees after the blue ink is printed; color difference range: the color difference delta E is less than 1.

3. The method of claim 2, wherein in step S2 the pigment is milled to a fineness of <10 μm.

4. The method according to claim 2, wherein step S2 comprises: the pigment obtained in step S1 was left for 4 hours or more to sufficiently wet the pigment.

5. The preparation method according to claim 2, wherein the stirring time in step S1 and step S3 is 30-50 min.