阅读说明：本技术 一种疏水胶印油墨生产方法 (Production method of hydrophobic offset printing ink ) 是由 陈法波 王海滨 姜海红 姜友森 姜德皇 于 2021-09-18 设计创作，主要内容包括：本发明公开了一种疏水胶印油墨生产方法,包括下列重量份的原料：植物染料15-30份、疏水剂(PVDF)20-40份、连接料40-60份、分散剂10-30份、消泡剂5-10份,整体生产工业较为成熟,通过控制连接料的加入量来让整体实现快感型和亮光型之间转换,增大了适用的范围,并且消泡剂由聚硅氧烷—聚醚共聚物乳液组成,整体消泡速度较快并且持续性较强,大大的增加了整体产品的质量,通过在油墨中加入多次粉碎后的疏水剂(PVDF)让整体油墨有一定的疏水性,大大的增加了整体的使用寿命。(The invention discloses a production method of hydrophobic offset printing ink, which comprises the following raw materials in parts by weight: 15-30 parts of plant dye, 20-40 parts of hydrophobic agent (PVDF), 40-60 parts of binder, 10-30 parts of dispersant and 5-10 parts of defoaming agent, the whole production industry is mature, the whole body can realize the conversion between a pleasant type and a bright type by controlling the adding amount of the binder, the application range is enlarged, the defoaming agent is composed of polysiloxane-polyether copolymer emulsion, the whole defoaming speed is high, the persistence is strong, the quality of the whole product is greatly improved, the hydrophobic agent (PVDF) which is crushed for many times is added into the printing ink, so that the whole printing ink has certain hydrophobicity, and the service life of the whole body is greatly prolonged.)

1. A production method of hydrophobic offset printing ink is characterized in that: comprises the following raw materials in parts by weight: 15-30 parts of plant dye, 20-40 parts of a hydrophobic agent (PVDF), 40-60 parts of a binder, 10-30 parts of a dispersant and 5-10 parts of a defoaming agent.

2. The method of producing a hydrophobic flexographic ink according to claim 1, characterized in that: the method comprises the following steps:

s1, mixing materials: adding linseed oil, tung oil and resin into a mixer for fully mixing to prepare a binder, and adding a dispersant and a defoamer into the mixture for continuously and fully mixing;

s2, crushing and forming: putting a hydrophobic agent (PVDF) and a vegetable dye into a ball mill for full grinding and crushing;

s3, grinding and color mixing: adding the vegetable dye into the mixed solution of the binder, the dispersant and the defoamer, fully grinding the mixture by using an ink grinder to prepare a finished product, and adding a hydrophobing agent (PVDF) into the ground product to carry out secondary grinding.

3. The method of producing a hydrophobic flexographic ink according to claim 2, characterized in that: the stirring time is 2-3h in the material mixing process, the stirring speed is 800r/min and 700-.

Technical Field

The invention relates to a production method of hydrophobic offset printing ink, in particular to a production method of hydrophobic offset printing ink.

Background

The printing ink is an important material for printing packaging material, and is used for printing patterns and characters on a printing stock, and comprises a main component and an auxiliary component which are uniformly mixed and repeatedly rolled to form a viscous colloidal fluid.

The existing printing ink has no good hydrophobic function, is extremely easy to corrode in rainy weather or humid environment, and particularly can leave certain hidden dangers for users when the printing ink falls off in some areas with severe environment.

Disclosure of Invention

The invention aims to solve the defects in the prior art, the production method of the hydrophobic offset printing ink has mature overall production industry, the overall conversion between a pleasant type and a bright type is realized by controlling the adding amount of the connecting material, the application range is enlarged, the defoaming agent is composed of polysiloxane-polyether copolymer emulsion, the overall defoaming speed is high, the persistence is strong, the quality of the overall product is greatly improved, the hydrophobic agent (PVDF) which is crushed for multiple times is added into the printing ink, the overall printing ink has certain hydrophobicity, and the service life of the overall printing ink is greatly prolonged.

In order to achieve the purpose, the invention provides the following technical scheme: a production method of hydrophobic offset printing ink comprises the following raw materials in parts by weight: 15-30 parts of plant dye, 20-40 parts of a hydrophobic agent (PVDF), 40-60 parts of a binder, 10-30 parts of a dispersant and 5-10 parts of a defoaming agent.

Preferably, the method comprises the following steps:

s1, mixing materials: adding linseed oil, tung oil and resin into a mixer for fully mixing to prepare a binder, and adding a dispersant and a defoamer into the mixture for continuously and fully mixing;

s2, crushing and forming: putting a hydrophobic agent (PVDF) and a vegetable dye into a ball mill for full grinding and crushing;

s3, grinding and color mixing: adding the vegetable dye into the mixed solution of the binder, the dispersant and the defoamer, fully grinding the mixture by using an ink grinder to prepare a finished product, and adding a hydrophobing agent (PVDF) into the ground product to carry out secondary grinding.

Preferably, the stirring time in the material mixing process is 2-3h, the stirring speed is 700-800r/min, and the powder diameter in the crushing and molding process is 10-60 μm.

The invention has the technical effects and advantages that:

the invention has mature process, the binder is prepared by fully mixing the linseed oil, the copper oil and the resin, the viscoelasticity and the color wetting dispersibility of the whole printing ink are greatly increased, and has excellent transfer printing property, good leveling property, good solvent release property, rapid drying, high glossiness, good adhesive force, good abrasion resistance, good dot reducibility, suitability for high-speed printing, excellent stability, the pigment can better show the color of the pigment after being fully combined with the vegetable dye, and the defoaming agent is composed of polysiloxane-polyether copolymer emulsion, so that the integral defoaming speed is high, the persistence is strong, the quality of the integral product is greatly improved, the whole ink has certain hydrophobicity by adding a hydrophobing agent (PVDF) which is crushed for a plurality of times into the ink, when the ink is in wet or rain weather, the water adsorbed on the surface of the ink can be reduced, so that the ink is prevented from being corroded due to long-time contact with the water. The whole service life is long, the large color difference in the mixing process is effectively reduced, and the ink can be applied to the printing ink in the areas with severe environments in large batch.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

A production method of hydrophobic offset printing ink comprises the following raw materials in parts by weight: comprises the following raw materials in parts by weight: 15 parts of plant dye, 20 parts of a hydrophobic agent (PVDF), 40 parts of a connecting material, 10 parts of a dispersing agent and 5 parts of a defoaming agent.

Preferably, the method comprises the following steps:

s1, mixing materials: adding 20 parts of linseed oil, 20 parts of tung oil and 40 parts of resin into a mixer for fully mixing to prepare a connecting material, adding 10 parts of a dispersing agent and 5 parts of a defoaming agent into the mixture, and continuously and fully mixing;

s2, crushing and forming: putting 20 parts of a hydrophobic agent (PVDF) and 15 parts of a vegetable dye into a ball mill for full grinding and crushing;

s3, grinding and color mixing: adding 15 parts of vegetable dye into 20 parts of mixed liquid of a connecting material, 10 parts of a dispersing agent and 5 parts of a defoaming agent, fully grinding the mixture by using an ink grinder to obtain a finished product, and adding 20 parts of a hydrophobic agent (PVDF) after grinding for secondary grinding.

Preferably, the stirring time in the material mixing process is 2-3h, the stirring speed is 700-800r/min, and the powder diameter in the crushing and molding process is 10-60 μm.

Example 2

A production method of hydrophobic offset printing ink comprises the following raw materials in parts by weight: comprises the following raw materials in parts by weight: 30 parts of plant dye, 40 parts of hydrophobic agent (PVDF), 60 parts of connecting material, 30 parts of dispersing agent and 10 parts of defoaming agent.

Preferably, the method comprises the following steps:

s1, mixing materials: adding 40 parts of linseed oil, 40 parts of tung oil and 80 parts of resin into a mixer for fully mixing to prepare a connecting material, adding 30 parts of a dispersing agent and 10 parts of a defoaming agent into the mixture, and continuously and fully mixing;

s2, crushing and forming: putting 40 parts of a hydrophobic agent (PVDF) and 30 parts of a vegetable dye into a ball mill for full grinding and crushing;

s3, grinding and color mixing: adding 30 parts of plant dye into 60 parts of connecting material, 30 parts of dispersing agent and 10 parts of defoaming agent, fully grinding by using an ink grinder to obtain a finished product, and adding 40 parts of hydrophobic agent (PVDF) after grinding for secondary grinding.

Preferably, the stirring time in the material mixing process is 2-3h, the stirring speed is 700-800r/min, and the powder diameter in the crushing and molding process is 10-60 μm.

Example 3

A production method of hydrophobic offset printing ink comprises the following raw materials in parts by weight: comprises the following raw materials in parts by weight: 23 parts of plant dye, 30 parts of hydrophobic agent (PVDF), 50 parts of connecting material, 20 parts of dispersing agent and 8 parts of defoaming agent.

Preferably, the method comprises the following steps:

s1, mixing materials: adding 30 parts of linseed oil, 30 parts of tung oil and 50 parts of resin into a mixer for fully mixing to prepare a connecting material, adding 20 parts of a dispersing agent and 8 parts of a defoaming agent into the mixture for continuously and fully mixing;

s2, crushing and forming: putting 30 parts of a hydrophobic agent (PVDF) and 23 parts of a vegetable dye into a ball mill for full grinding and crushing;

s3, grinding and color mixing: adding 23 parts of vegetable dye into 50 parts of a connecting material, 20 parts of a dispersing agent and 8 parts of a defoaming agent, fully grinding by using an ink grinder to obtain a finished product, and adding 30 parts of a hydrophobic agent (PVDF) after grinding for secondary grinding.

Preferably, the stirring time in the material mixing process is 2-3h, the stirring speed is 700-800r/min, and the powder diameter in the crushing and molding process is 10-60 μm.

In summary, the following steps: compared with other treatment processes, the production method of the hydrophobic offset printing ink provided by the invention has the following advantages: the process is mature, the binder is prepared by fully mixing the linseed oil, the copper oil and the resin, the viscoelasticity and the color wetting dispersibility of the whole ink are greatly increased, and has excellent transfer printing property, good leveling property, good solvent release property, rapid drying, high glossiness, good adhesive force, good abrasion resistance, good dot reducibility, suitability for high-speed printing, excellent stability, the pigment can better show the color of the pigment after being fully combined with the vegetable dye, and the defoaming agent is composed of polysiloxane-polyether copolymer emulsion, so that the integral defoaming speed is high, the persistence is strong, the quality of the integral product is greatly improved, the whole ink has certain hydrophobicity by adding a hydrophobing agent (PVDF) which is crushed for a plurality of times into the ink, when the ink is in wet or rain weather, the water adsorbed on the surface of the ink can be reduced, so that the ink is prevented from being corroded due to long-time contact with the water. The whole service life is long, the large color difference in the mixing process is effectively reduced, and the ink can be applied to the printing ink in the areas with severe environments in large batch.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.