CN115322618A - Frosted ink and preparation method thereof - Google Patents

Abstract

The invention relates to C09D, in particular to frosted ink and a preparation method thereof. The frosted ink comprises, by weight, 60-70% of main resin, 10-30% of frosted powder and 5-10% of solvent. The invention provides a printing method for a non-key target picture and text, which is dull in color and luster, granular in surface, bright and capable of printing a layer of frosted ink on the non-key target picture and text part and contrast the key salient parts such as LOGO on the target picture and text part, and improves the attraction to consumers. And the provided matte ink can also be used as a partial printing design for a security marking. In addition, besides the structure of the base coat, the printing ink and the gloss oil of the common printing ink, the printing ink can be printed outside the gloss oil layer, namely the printing ink can be printed according to the sequence of the base coat, the printing ink, the gloss oil and the frosted printing ink, and still has good granular feeling, smoothness and proper dull effect, and improves the hardness and the scratch resistance.

Description

Frosted ink and preparation method thereof

Technical Field

The invention relates to C09D, and more particularly relates to a frosted ink and a preparation method thereof.

Background

In the field of metal package printing, the common process comprises base coating, printing ink and gloss oil, the printing effect is single, the printed effects are similar, and the consumers are difficult to attract, so that the shape, the color and the like of the printing ink are required to be higher at present.

CN113621266A discloses an ink with frosted effect, which comprises frosted additives composed of silicon dioxide, sodium borate, zinc oxide, magnesium oxide, titanium dioxide and zirconium dioxide, and is suitable for three-dimensional printing on the surface of a PET film.

However, the outer layer of the existing frosted ink is often required to be coated with a gloss oil layer for protection, the hardness and the scratch resistance degree are poor, and the touch feeling is not obvious after frosting.

Disclosure of Invention

In order to solve the problems, the first aspect of the invention provides a frosted ink, and the raw materials for preparing the frosted ink comprise, by weight, 60-70% of main resin, 10-30% of frosted powder and 5-10% of solvent.

As a preferred technical scheme of the present invention, the main resin is an alkyd resin, the alkyd resin is selected from one or more of linseed oil modified alkyd resin, soybean oil modified alkyd resin, sunflower seed oil modified alkyd resin, coconut oil modified alkyd resin, styrene modified alkyd resin, and soybean oil and tung oil modified alkyd resin, preferably, the main resin is soybean oil modified alkyd resin, and sunflower seed oil modified alkyd resin, and the weight ratio is 1:1 to 2. The invention selects the alkyd resin as the main film forming material, such as sunflower oil alkyd resin and soybean oil alkyd resin which are blended according to a certain proportion, so that the wettability and the bearing property to the sanding powder and the like can be improved, and the yellowing resistance and the gloss retention performance are promoted.

In a preferred embodiment of the present invention, the alkyd resin is a long-oil alkyd resin, wherein the long-oil alkyd resin comprises 60-70% by mass of vegetable oil and 20-30% by mass of phthalic anhydride. The inventor finds that the long-oil-length alkyd resin, especially the alkyd resin modified by different vegetable oils, is more favorable for promoting the sanding effect of the sanding powder, and the scratch resistance is promoted while the touch is improved.

As examples of the soybean oil-modified alkyd resin, 820 soybean oil-modified alkyd resins (oil degree of 60%) can be cited; as an example of the sunflower oil-modified alkyd resin, 822, which has an oil content of 60%, preferably 60 to 70%, is cited.

As a preferred technical solution of the present invention, the frosting powder is selected from one or more of quartz, nylon powder, calcium carbonate powder, aluminum oxide, and polytetrafluoroethylene wax, and is preferably polytetrafluoroethylene wax.

In order to achieve a frosted touch, a large amount of grinding powder is selected, but this also brings a rough hand and reduces abrasion resistance, and the inventors have found that when polytetrafluoroethylene wax is selected as the grinding powder, smooth hand is promoted, and a three-dimensional feeling and a matte feeling are visually provided, and yellowing is reduced. The inventor also finds that when the long-oil alkyd resin and the polytetrafluoroethylene wax are selected to act, the exposure of the wax can be reduced in the action process of the high-content vegetable oil end and the polytetrafluoroethylene wax, the wear resistance is promoted, and the granular feel is improved.

As a preferred technical scheme of the invention, the solvent is aromatic oil or dearomatized oil, preferably, the initial point of the solvent is more than or equal to 200 ℃, and can be enumerated by D70 dearomatized solvent oil, D80 dearomatized solvent oil, D100 dearomatized solvent oil and D110 dearomatized solvent oil, wherein D series solvent oil is the classification of dearomatized solvent oil, the initial point and the final point increase along with the increase of the number behind D, for example, the initial point of D70 dearomatized solvent oil is about 205 ℃, the final point is about 245 ℃, the initial point of D110 solvent oil is about 245-250 ℃, and the final point is about 265-270 ℃.

The inventor finds that the drying rate is adjusted by selecting the high-boiling-point dearomatized oil and matching with the main resin, and meanwhile, the uniformity and stability of the ink system are promoted, the viscosity is adjusted, and the on-machine printability of the ink is improved.

In order to further improve the smoothness and reduce the friction coefficient of the ink after printing, a small amount of wax powder can be added. As a preferable technical scheme, the frosted ink also comprises 0.5-1% of wax powder in percentage by weight; the wax powder is selected from one or more of polyethylene wax, polypropylene wax and Fischer-Tropsch wax. Preferably a polyethylene wax, more preferably a polytetrafluoroethylene-modified polyethylene wax, more preferably the particle size of the polytetrafluoroethylene-modified polyethylene wax is from 4 to 8 μm.

As a preferable technical scheme, the frosted ink also comprises 0-5% of auxiliary agents by weight percent, wherein the auxiliary agents can be enumerated by anti-emulsification auxiliary agents, drying agents, fumed silica, antioxidants and the like, so that the performances of the ink such as printing adaptability, quality guarantee period and the like are improved. Preferably, the fineness of the ink is 10 to 25 μm.

The second aspect of the invention provides a preparation method of the frosted ink, which comprises the following steps:

adding main resin, frosted powder and a solvent, stirring and mixing, adding other preparation raw materials except the frosted ink, mixing and stirring, rolling until the particle size is less than 15 mu m, and stirring to obtain the frosted ink. The rolling may be performed by a hydraulic three-roll machine or the like.

Compared with the prior art, the invention has the following beneficial effects:

the invention provides a printing ink which is dull in color and luster and granular in surface, a layer of frosted ink is printed on a non-key target image and text part, key salient parts such as a printed LOGO which is backed out of the target image and text part are bright and bright, and the attraction of consumers is improved. And the provided matte ink can also be used as a partial print design for a security marking. In addition, besides the structure of the base coat, the printing ink and the gloss oil of the common printing ink, the printing ink can be printed outside the gloss oil layer, namely the printing ink can be printed according to the sequence of the base coat, the printing ink, the gloss oil and the frosted printing ink, and still has good granular feeling, smoothness and proper dull effect, and improves the hardness and the scratch resistance.

Detailed Description

Examples

Example 1

The embodiment provides a frosted ink, which comprises the following raw materials, by weight, 89.5% of main resin, 5% of frosted powder, 5% of solvent and 0.5% of wax powder, wherein the main resin is soybean oil modified alkyd resin 820 and sunflower seed oil modified alkyd resin 822, and the weight ratio is 1: the grinding powder is polytetrafluoroethylene wax, the solvent is D70 dearomatization solvent oil, and the wax powder is polytetrafluoroethylene modified polyethylene wax with the particle size of 5 mu m.

This example also provides a method of making an ink as described above, comprising: adding main resin, frosted powder and a solvent, stirring and mixing, adding other preparation raw materials except the frosted ink, mixing and stirring, rolling until the particle size is less than 15 mu m, and stirring to obtain the frosted ink. The rolling may be performed by a hydraulic three-roll machine or the like.

Example 2

The embodiment provides a frosted ink, which is prepared from the following raw materials, by weight, 83.5% of main resin, 10% of frosted powder, 6% of solvent and 0.5% of wax powder, wherein the main resin is soybean oil modified alkyd resin 820 and sunflower seed oil modified alkyd resin 822, and the weight ratio is 1:1.2, the frosting powder is polytetrafluoroethylene wax, the solvent is D70 dearomatization solvent oil, and the wax powder is polytetrafluoroethylene modified polyethylene wax with the particle size of 5 microns.

This example also provides a method of making an ink as described above, comprising: adding main resin, frosted powder and a solvent, stirring and mixing, adding other preparation raw materials except the frosted ink, mixing and stirring, rolling until the particle size is less than 15 mu m, and stirring to obtain the frosted ink. The rolling may be performed by a hydraulic three-roll machine or the like.

Example 3

The embodiment provides a frosted ink, which is prepared from 77.3 wt% of main resin, 15 wt% of frosted powder, 7 wt% of solvent and 0.7 wt% of wax powder, wherein the main resin is soybean oil modified alkyd resin 820 and sunflower seed oil modified alkyd resin 822, and the weight ratio is 1:1.5, the frosting powder is polytetrafluoroethylene wax, the solvent is D100 dearomatization solvent oil, the wax powder is polytetrafluoroethylene modified polyethylene wax, and the particle size is 5 mu m.

This example also provides a method of making an ink as described above, comprising: adding main resin, frosted powder and a solvent, stirring and mixing, adding other preparation raw materials except the frosted ink, mixing and stirring, rolling until the particle size is less than 15 mu m, and stirring to obtain the frosted ink. The rolling may be performed by a hydraulic three-roll machine or the like.

Example 4

The embodiment provides a frosted ink, which is prepared from the following raw materials, by weight, 72.3% of main resin, 20% of frosted powder, 7% of solvent and 0.7% of wax powder, wherein the main resin is soybean oil modified alkyd resin 820 and sunflower seed oil modified alkyd resin 822, and the weight ratio is 1:1.5, the frosting powder is polytetrafluoroethylene wax, the solvent is D100 dearomatization solvent oil, the wax powder is polytetrafluoroethylene modified polyethylene wax, and the particle size is 5 mu m.

This example also provides a method of making an ink as described above, comprising: adding main resin, frosted powder and a solvent, stirring and mixing, adding other preparation raw materials except the frosted ink, mixing and stirring, rolling until the particle size is less than 15 mu m, and stirring to obtain the frosted ink. The rolling may be performed by a hydraulic three-roll machine or the like.

Example 5

The embodiment provides a frosted ink, which is prepared from the following raw materials, by weight, 64% of main resin, 25% of frosted powder, 10% of solvent and 1% of wax powder, wherein the main resin is soybean oil modified alkyd resin 820 and sunflower seed oil modified alkyd resin 822, and the weight ratio is 1:2, the frosting powder is polytetrafluoroethylene wax, the solvent is D110 dearomatization solvent oil, and the wax powder is polytetrafluoroethylene modified polyethylene wax with the particle size of 6 microns.

This example also provides a method of making an ink as described above, comprising: adding main resin, frosted powder and a solvent, stirring and mixing, adding other preparation raw materials except the frosted ink, mixing and stirring, rolling until the particle size is less than 15 mu m, and stirring to obtain the frosted ink. The rolling may be performed by a hydraulic three-roll machine or the like.

Example 6

The embodiment provides a frosted ink, which comprises the following raw materials, by weight, 60-70% of main resin, 30% of frosted powder, 10% of solvent and 1% of wax powder, wherein the main resin is soybean oil modified alkyd resin 820 and sunflower seed oil modified alkyd resin 822, and the weight ratio is 1:2, the sanding powder is polytetrafluoroethylene wax, the solvent is D110 dearomatization solvent oil, and the wax powder is polytetrafluoroethylene modified polyethylene wax with the particle size of 6 microns.

This example also provides a method of making an ink as described above, comprising: adding main resin, frosted powder and a solvent, stirring and mixing, adding other preparation raw materials except the frosted ink, mixing and stirring, rolling until the particle size is less than 15 mu m, and stirring to obtain the frosted ink. The rolling may be performed by a hydraulic three-roll machine or the like.

Evaluation of Properties

The matte inks provided in examples 1 to 6 were printed on a half area of an acrylic gloss oil layer of tin plate, and thermally cured to prepare a sample sheet, which was subjected to the following experiment.

1. Fineness:

experimental equipment: sample to be tested, fineness meter (0-25 um), and solvent

Experimental procedure: placing the fineness meter on a horizontal plane, fully cleaning, placing a sample to slightly and excessively fill the position with the scale of about 25um at the front end of the groove, scraping the sample along the groove by using a scraper which is perpendicular to the groove, applying average force to two sides, continuously scraping the sample at one time without interruption, taking up the fineness plate after scraping to observe the surface of the fluorescent lamp tube immediately opposite to the fluorescent lamp tube, preferably forming an angle of 30-45 degrees with eyes, observing the uniformly exposed position of particles in the groove by light, and recording the reading; note that: 1. the fineness meter and the scraper are ensured to be clean and have no concave loss; 2. should operate under good light sources; 3. reading the fineness within 10-15 seconds, otherwise easily dropping dust to cause judgment error; 4. if the sample is too thick, the sample can be diluted by using a matched solvent, a monomer and the like; and (4) judging the standard: 1. if individual particles are exposed on other graduation lines, reading the scale in the range of the adjacent graduation lines, wherein the number of the particles cannot exceed three, if the scale exceeds the number of the particles, the reading is a previous scale, and if the reading of a concentration point is 10 mu m, three particles exist between 10 mu m and 12.5 mu m, the fineness of the paint product is 12.5 mu m; 2. the ink fineness is generally required to be the fineness of the concentration point, and individual particles do not need to be considered, and the results are shown in Table 1.

2. Sanding effect: and (3) observing the difference of the visual sense, the touch sense and the fineness of the non-matte ink printing part A and the matte ink printing part B in the sample, and comparing the visual sense and the touch sense with each other, wherein the visual sense observes the dull degree of the part B relative to the part A, the touch sense observes whether the part B has a granular sense, the granular sense is from unobvious to obvious, and the touch sense, the touch sense and the touch sense are respectively slightly good, the fineness observes whether a finger rubs the part B to feel sharp substances to slide, if not, the layout is fine, if the granular sense is slight, the fineness is slightly poor, and if the sharp substances are obviously slipped, the fineness is poor, and the result is shown in a table 1.

3. Hardness: the pencil hardness was measured and the results are shown in table 1.

4. Scratch resistance:

experimental equipment: sample wafer to be tested, scratch instrument and weight

Experimental procedure: according to the size of a SCRATCH instrument, cutting a sample into (about 13 multiplied by 5 cm), lightly holding the part of the super needle shaft, putting the sample under two screws, fastening, lightly putting the lower needle shaft, selecting the weight according to the product specification, putting the sample in a round bar ON a needle hammer, turning ON a machine 'POWER' at an 'ON' position, lighting a red lamp, moving an 'AUTO' position to an 'SCRATCH' position, and observing an ammeter pointer (after electrification and SCRATCH, the ammeter pointer moves, and if no SCRATCH exists, the pointer is at the '0' position); and (4) judging the standard: the weight of the coating film when it was scratched was regarded as the critical point of the scratch resistance of the coating film, and the scratch value was the maximum weight of the coating film when it was not scratched, not the weight when it was scratched, and the results are shown in Table 1.

TABLE 1

According to test results, the matte ink provided by the invention can provide good friction performance and a certain matte effect, improves the contrast of the metal outer layer pattern, can be used as the outermost layer, and provides good hardness and scratch resistance.

Claims (10)

1. The frosted ink is characterized by comprising, by weight, 60-70% of main resin, 10-30% of frosted powder and 5-10% of a solvent.

2. The matte ink according to claim 1, wherein the main resin is an alkyd resin selected from one or more of linseed oil modified alkyd resin, soybean oil modified alkyd resin, sunflower oil modified alkyd resin, coconut oil modified alkyd resin, styrene modified alkyd resin, and soya oil modified alkyd resin.

3. The matte ink according to claim 2, wherein the main resin is a soybean oil-modified alkyd resin and a sunflower oil-modified alkyd resin, and the weight ratio of the main resin to the sunflower oil-modified alkyd resin is 1:1 to 2.

4. The matte ink of claim 2, wherein the alkyd resin is a long oil alkyd resin.

5. The matte ink according to claim 1, wherein the matte powder is selected from one or more of quartz, nylon powder, calcium carbonate powder, aluminum oxide, and polytetrafluoroethylene wax.

6. The matte ink according to claim 1, wherein the solvent is an aromatic oil or a dearomatized oil.

7. The matte ink according to claim 6, wherein the solvent has an initial cut of 200 ℃ or higher.

8. The matte ink according to any one of claims 1 to 7, wherein the matte ink is prepared from the following raw materials, by weight, 0.5-1% of wax powder; the wax powder is selected from one or more of polyethylene wax, polypropylene wax and Fischer-Tropsch wax.

9. The matte ink according to claim 1, wherein the matte ink is prepared from 0-5 wt% of auxiliary agents.

10. A method for preparing the matte ink according to any one of claims 1 to 9, comprising:

adding main resin, frosted powder and a solvent, stirring and mixing, adding other preparation raw materials except the frosted ink, mixing and stirring, rolling until the particle size is less than 15 mu m, and stirring to obtain the frosted ink. The rolling may be performed by a hydraulic three-roll machine or the like.