CN112375427A - Gravure green ink for pure water type tipping paper - Google Patents

Abstract

The invention discloses a gravure cyan ink for pure water type tipping paper, which comprises the following components in parts by weight: 45-60 parts of water-based acrylic resin, 65-70 parts of deionized water, 23-35 parts of a cyan pigment, 3-5 parts of an auxiliary agent, 5-8 parts of a filler, 0.5-0.8 part of cellulase, 0.25-0.3 part of sodium hydroxide and 0.5-0.65 part of chloromethane, wherein the filler comprises one or the mixture of calcium carbonate and talcum powder. According to the technical scheme disclosed by the invention, trace cellulase and sodium hydroxide are added into the printing ink, so that the printing ink can be in a relatively stable state, the quality of the printing ink is not affected, the wear resistance of the printing ink can be improved, and heavy metals possibly contained in the printing ink are prevented from being applied to cigarette manufacturing and causing harm to human bodies.

Description

Gravure green ink for pure water type tipping paper

Technical Field

The invention relates to the technical field of printing ink, in particular to gravure green printing ink for pure water type tipping paper.

Background

In the cigarette manufacturing industry, tipping paper is used as special paper for connecting cigarettes with filter tips, and when smokers smoke, the tipping paper can be directly contacted with mouths of the smokers to ensure the health of the smokers, so that the requirement on the tipping paper is extremely high, and further the requirement on ink for printing the tipping paper is higher.

The water-based ink is a uniform slurry-like substance composed of a binder, a pigment, an auxiliary agent and the like. The vehicle provides the necessary transfer properties of the ink and the pigment imparts color to the ink. Aqueous ink vehicles are largely classified into two types: water-diluted type and water-dispersed type. The former can be used in a wide variety of resin types, such as maleic acid resin, shellac, maleic acid resin-modified shellac, urethane, water-soluble acrylic resin, and aqueous amino resin. The water dispersion type vehicle is obtained by polymerizing an emulsified monomer in water, and is considered to be an oil-in-water emulsion type because it is a two-phase system in which an oil phase is dispersed in a water phase in the form of particles and can be diluted with water although it cannot be dissolved in water.

In chinese patent document CN104946007A, an antibacterial water-based ink special for tipping paper is disclosed, which is prepared from the following components in parts by weight: 40-70 parts of acrylic resin liquid, 15-25 parts of pigment and filler, 5-15 parts of ethanol, 5-10 parts of deionized water, 1 part of wetting dispersant, 0.1 part of defoamer, 0-1 part of flatting agent and 0-1.5 parts of antibacterial assistant.

The preparation method of the special antibacterial water-based ink for tipping paper in the technical scheme comprises the following steps:

(1) preparing materials and weighing: weighing acrylic resin liquid, pigment and filler, ethanol, deionized water, wetting dispersant, defoamer, flatting agent and antibacterial auxiliary agent one by one according to the proportion for later use;

(2) stirring and pre-dispersing: mixing and stirring the acrylic resin liquid, the pigment and the filler uniformly, then adding ethanol, deionized water and a wetting dispersant, and continuing stirring and dispersing uniformly;

(3) grinding: grinding the slurry which is stirred and pre-dispersed uniformly by a three-roller machine until the fineness is below 15 mu m;

(4) size mixing: adding the defoaming agent, the leveling agent and the antibacterial auxiliary agent into the ground slurry, and uniformly stirring and dispersing;

(5) and (4) checking: and (5) packaging after each index is qualified.

However, the ink prepared by the method has no effect of reducing the content of heavy metals, and has certain defects in the aspect of the content of the heavy metals, and certain harm may be caused. Therefore, the development of a water-based ink which avoids the harm of heavy metals to the cigarette manufacturing industry is urgently needed.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the gravure clear ink for the pure water type tipping paper, which can avoid the harm of heavy metals possibly contained in the ink to the cigarette manufacturing industry.

In order to achieve the purpose, the technical scheme provided by the invention is as follows: the gravure green ink for the pure water type tipping paper comprises the following components in parts by weight:

wherein, the filler comprises one or the mixture of calcium carbonate and talcum powder.

Furthermore, the auxiliary agent comprises a defoaming agent, a leveling agent, a dispersing machine and a surfactant, and the auxiliary agent is prepared by mixing the substances in equal proportion.

Further, the particle size of the filler is less than 15 um.

The preparation method of the gravure cyan ink for the pure water type tipping paper comprises the following steps of:

s1: adding water-based acrylic resin, deionized water, a cyan pigment and a filler in proportion, putting into a pulping pot, and pulping at a high speed for 25-30 minutes at a temperature of 30 +/-2 ℃ for pre-dispersion;

s2: sending the pre-dispersed material into a sand mill through a delivery pump for sand milling dispersion until the fineness of the material is 12-15 mu m;

s3: the sanded materials flow into an ink mixing pot, the rest materials are added, and stirring and dispersing are carried out for 25-30 minutes at normal temperature until all the materials are uniformly mixed;

s4: and (6) canning.

Advantageous effects

According to the technical scheme disclosed by the invention, a trace amount of cellulase and sodium hydroxide are added into the printing ink, so that the printing ink can be in a relatively stable state, the quality of the printing ink cannot be affected adversely, and the wear resistance of the printing ink can be improved.

The cellulose is the main component of the tipping paper, in the process of printing the tipping paper by using the ink, the ink is contacted with the tipping paper, the sodium hydroxide alkalifies the cellulose on the surface layer of the tipping paper, and meanwhile, the cellulose further reduces the polymerization degree of the cellulose and improves the reaction capability of the cellulose. At the moment, methyl chloride in the printing ink can be esterified with activated cellulose on the surface layer to form methyl cellulose, the methyl cellulose has the capability of complexing heavy metals, and the heavy metals can be complexed, so that the heavy metals are attached to one layer contacted with the tipping paper, the surface layer of the film-formed printing ink does not contain the heavy metals, and the use safety is higher.

It should be noted that the accessibility of the cellulose is low, the reaction capability is poor, and the trace amount of sodium hydroxide and cellulase added in the ink only react with the cellulose on the surface layer, so that the tipping paper can be protected from being damaged, and the adhesive force between the tipping paper and the ink can be increased.

Drawings

FIG. 1 is a graph showing the variation of heavy metal content with depth of ink layer. (ink layer depth means the depth extending outward from the tipping paper)

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the following examples further illustrate the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The first embodiment is as follows:

the gravure green ink for the pure water type tipping paper comprises the following components in parts by weight:

wherein, the filler comprises one or the mixture of calcium carbonate and talcum powder.

Preferably, the auxiliary agent comprises a defoaming agent, a leveling agent, a dispersing machine and a surfactant, and the auxiliary agent is prepared by mixing the substances in equal proportion.

Preferably, the filler has a particle size of less than 15 um.

The preparation method of the gravure cyan ink for the pure water type tipping paper comprises the following steps of:

s1: adding water-based acrylic resin, deionized water, a cyan pigment and a filler in proportion, putting into a pulping pot, and pulping at a high speed for 25 minutes at a temperature of 28 ℃ for pre-dispersion;

s2: sending the pre-dispersed material into a sand mill through a delivery pump for sand milling dispersion until the fineness of the material is 12 mu m;

s3: the sanded materials flow into an ink mixing pot, the rest materials are added, and stirring and dispersing are carried out for 25 minutes at normal temperature until all the materials are uniformly mixed;

s4: and (6) canning.

Example two

The gravure green ink for the pure water type tipping paper comprises the following components in parts by weight:

wherein, the filler comprises one or the mixture of calcium carbonate and talcum powder.

Preferably, the auxiliary agent comprises a defoaming agent, a leveling agent, a dispersing machine and a surfactant, and the auxiliary agent is prepared by mixing the substances in equal proportion.

Preferably, the filler has a particle size of less than 15 um.

The preparation method of the gravure cyan ink for the pure water type tipping paper comprises the following steps of:

s1: adding water-based acrylic resin, deionized water, a cyan pigment and a filler in proportion, putting into a pulping pot, and pulping at a high speed for 28 minutes at a temperature of 30 ℃ for pre-dispersion;

s2: sending the pre-dispersed material into a sand mill through a delivery pump for sand milling dispersion until the fineness of the material reaches 13 mu m;

s3: the sanded materials flow into an ink mixing pot, the rest materials are added, and stirring and dispersing are carried out for 28 minutes at normal temperature until all the materials are uniformly mixed;

s4: and (6) canning.

EXAMPLE III

The gravure green ink for the pure water type tipping paper comprises the following components in parts by weight:

wherein, the filler comprises one or the mixture of calcium carbonate and talcum powder.

Preferably, the auxiliary agent comprises a defoaming agent, a leveling agent, a dispersing machine and a surfactant, and the auxiliary agent is prepared by mixing the substances in equal proportion.

Preferably, the filler has a particle size of less than 15 um.

The preparation method of the gravure cyan ink for the pure water type tipping paper comprises the following steps of:

s1: adding water-based acrylic resin, deionized water, a cyan pigment and a filler in proportion, putting into a pulping pot, and pulping at a high speed for 30 minutes at a temperature of 32 ℃ for pre-dispersion;

s2: sending the pre-dispersed material into a sand mill through a delivery pump for sand milling dispersion until the fineness of the material is 15 mu m;

s3: the sanded materials flow into an ink mixing pot, the rest materials are added, and stirring and dispersing are carried out for 30 minutes at normal temperature until all the materials are uniformly mixed;

s4: and (6) canning.

The printing ink manufactured by the technical scheme disclosed by the invention is printed on tipping paper, and then the content of heavy metal is analyzed on the printing ink layers of different layers.

As can be clearly seen from figure 1, the ink prepared by the method gradually reduces the content of heavy metals from inside to outside, and the content of the heavy metals on the surface layer of the ink layer tends to be stable to zero, so that the ink is used for printing tipping paper to improve the application safety of the tipping paper.

The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.

Claims (4)

1. The gravure green ink for the pure water type tipping paper is characterized by comprising the following components in parts by weight:

wherein, the filler comprises one or the mixture of calcium carbonate and talcum powder.

2. The pure water type gravure cyan ink for tipping paper according to claim 1, characterized in that: the auxiliary agent comprises a defoaming agent, a flatting agent, a dispersing machine and a surfactant, and the auxiliary agent is prepared by mixing the substances in equal proportion.

3. The pure water type gravure cyan ink for tipping paper according to claim 1, characterized in that: the particle size of the filler is less than 15 um.

4. A method for preparing the gravure cyan ink for pure water type tipping paper according to claim 1, comprising the steps of:

s1: adding water-based acrylic resin, deionized water, a cyan pigment and a filler in proportion, putting into a pulping pot, and pulping at a high speed for 25-30 minutes at a temperature of 30 +/-2 ℃ for pre-dispersion;

s2: sending the pre-dispersed material into a sand mill through a delivery pump for sand milling dispersion until the fineness of the material is 12-15 mu m;

s3: the sanded materials flow into an ink mixing pot, the rest materials are added, and stirring and dispersing are carried out for 25-30 minutes at normal temperature until all the materials are uniformly mixed;

s4: and (6) canning.

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