Low-odor quick-drying offset printing ink and preparation method thereof

Abstract

The invention discloses low-odor quick-drying offset printing ink and a preparation method thereof, the low-odor quick-drying offset printing ink comprises the following components in percentage by weight: 12-18% of pigment, 3-10% of filler, 55-75% of binder and 1-5% of drier, specifically, the drier is one or more of zinc, iron and cerium, and the assistant is one or more of zinc, iron and cerium. According to the invention, metal driers such as zinc, iron, cerium and the like are used for replacing originally used Co and Mn series metal driers, so that the effect of reducing the odor of the ink is achieved, meanwhile, the original drying level can be maintained as much as possible, components for inhibiting drying in the ink are reduced as much as possible, the content of unsaturated bonds in the ink is increased, and the use amount of vegetable oil is increased; the oxidation reaction of the ink is accelerated; meanwhile, the average molecular weight of the ink is reduced, and the speed of absorbing the ink by paper is increased, so that the purposes of reducing the odor of the ink and accelerating drying are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of offset printing ink, in particular to a low-odor quick-drying offset printing ink and a preparation method thereof. Background Art

[0002] The drying of traditional sheet-fed offset printing inks on the market is composed of pigments, binders and additives, and is mainly a combination of penetration drying and oxidation crusting drying. In order to prepare fast-fixing inks and accelerate their drying, metal driers are used. Although it can promote oxidative drying, a certain amount of aldehyde and ketone gases with a special pungent odor are produced during the drying process of the ink. Although these gases are not within the control scope of environmental protection regulations, they can cause olfactory discomfort. In particular, books and printed materials are packaged in plastic bags. This means that the odor cannot be effectively dissipated during the drying process of the ink, which will aggravate the discomfort. In order to solve the above problems, a low-odor fast-drying offset printing ink and a preparation method thereof are proposed.

[0003] In recent years, although the use of environmentally friendly soybean oil ink can reduce VOC emissions and is beneficial to environmental protection, the organic components in offset inks will make the inks have a certain odor. After the inks are printed on finished products such as books, they will affect the user's senses. At present, odor masking agents are still added to the existing environmentally friendly soybean oil offset inks to reduce the odor of the inks, and the odor problem of offset inks has not been solved from the source. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that a certain amount of aldehyde and ketone gases with a special pungent odor are generated during the drying process of the ink, and a low-odor fast-drying offset printing ink and a preparation method thereof are proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A low-odor quick-drying offset printing ink comprises a pigment, a filler, a drying agent, a connecting material and an auxiliary agent, wherein the weight proportions are as follows: 12-18% of the pigment, 3-10% of the filler, 55-75% of the connecting material and 1-5% of the drying agent.

[0006] The above technical solution further includes: The drying agent is specifically one or more of zinc, iron and cerium.

[0007] A method for preparing a low-odor quick-drying offset printing ink comprises the following steps: Step 1: Preparation: Prepare the pigments, fillers, binders, driers, drying vegetable oils and additives for ink production in advance; Step 2: Input: Accurately input the connecting materials, pigments and fillers according to the quantity of the process order; Step 3: Stirring: Use a mixer to mix the pigment, filler and connector evenly at a stirring speed of 600r / min-800r / min and a stirring time of 40min-60min; Step 4: Rolling: The semi-finished product that has been stirred evenly is ground using a grinder, which uses a three-roller mill. The purpose of the grinding is to reduce the fineness of the semi-finished product. Step 5: Inspection: Check whether the semi-finished product after grinding is qualified. If it is unqualified, continue to grind until it is qualified. Use a scraper fineness meter to detect the fineness of grinding during the inspection; Step 6: Conditioning: Add drying agent, drying vegetable oil and additives accurately according to the quantity of the work order; Step 7: Inspection: Use a viscosity meter, parallel plate viscometer, color development instrument and spectrodensitometer to test each item. If the test is qualified, it is the finished ink. The stirring speed is 700r / min-1000r / min, and the stirring time is 60min-90min; Step 8: Canning: Divide the finished ink into individual containers.

[0008] The present invention has the following beneficial effects: Compared with the prior art, the present invention uses metal driers such as zinc, iron, cerium, etc. to replace the original Co and Mn series metal driers, so as to achieve the effect of reducing the odor of the ink, and at the same time can maintain the original drying level as much as possible. In addition, the present invention minimizes the components that inhibit drying in the ink, increases the amount of vegetable oil with unsaturated bond content in the ink, so as to accelerate the oxidation reaction of the ink; at the same time, it also reduces the average molecular weight of the ink, and accelerates the speed at which the ink is absorbed by the paper, so as to achieve the purpose of reducing the odor of the ink and accelerating the drying. Implementation

[0009] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0010] Prepare the ink in advance, add the binder and pigment accurately according to the amount in the process sheet, stir and mix the pigment and binder evenly, grind the semi-finished product after stirring, and check whether the semi-finished product is qualified. If it is not qualified, continue to grind until it is qualified. Add the drier, drying vegetable oil and additives accurately according to the amount in the process sheet, mix them evenly with a mixer, and adjust the test. Use a viscometer, parallel plate viscometer, colorimeter and spectrodensitometer to test the items. If the test is qualified, it is the finished ink, and the finished ink is divided into containers. Example

[0011] In the first embodiment, the following steps are added: In step 3, the stirring speed is 600 r / min-800 r / min, and the stirring time is 40 min-60 min.

[0012] Prepare the pigments, fillers, binders, driers, drying vegetable oils, additives and containers for ink production in advance, accurately add the binders and pigments according to the amount in the process order, use a blender to evenly mix the pigment and binder at a stirring speed of 600r / min-800r / min and a stirring time of 40min-60min, use a grinding machine to grind the evenly mixed semi-finished products, check whether the ground semi-finished products are qualified, if not, continue grinding until they are qualified, accurately add fillers, driers, drying vegetable oils and additives according to the amount in the work order, use a blender to evenly mix the semi-finished products, fillers, driers, drying vegetable oils and additives, use a viscometer, parallel plate viscometer, colorimeter and spectrodensitometer to test the items, and if the test is qualified, it is the finished ink, and the finished ink is packaged into various containers. Example

[0013] In the second embodiment, the following steps are added: In step 4, the grinder adopts a three-roll mill, and the purpose of grinding is to reduce the fineness of the semi-finished product.

[0014] Prepare the pigments, fillers, binders, driers, dry vegetable oils, additives and containers for ink production in advance, accurately add the binders and pigments according to the amount in the process order, use a blender to mix the pigments and binders evenly, the stirring speed is 600r / min-800r / min, and the stirring time is 40min-60min, use grinding equipment to grind the evenly mixed semi-finished products, check whether the ground semi-finished products are qualified, if not, continue to grind until they are qualified, accurately add fillers, driers, dry vegetable oils and additives according to the amount in the work order, use a blender to mix the semi-finished products, fillers, driers, dry vegetable oils and additives evenly, use a viscometer, parallel plate viscometer, colorimeter and spectrodensitometer to test the items, and if the test is qualified, it is the finished ink, and the finished ink is packaged into each container. Example

[0015] In the third embodiment, the following steps are added: In step 5, a scraper fineness meter is used to detect the fineness of the grinding.

[0016] Prepare the pigment, filler, varnish, drier, drying vegetable oil, additives and pull cylinder for ink production in advance, accurately add varnish and pigment according to the amount of the work order, use a mixer to mix the pigment and varnish evenly, the stirring speed is 600r / min-800r / min, and the stirring time is 40min-60min, and the semi-finished product that is stirred evenly is ground with a grinding equipment. The grinder uses a three-roller machine. The purpose of grinding is to reduce the fineness of the semi-finished product, and check whether the semi-finished product after grinding is qualified. If unqualified, continue to grind until it is qualified. Use a scraper fineness meter to test the fineness of the grinding, and accurately add fillers, drier, drying vegetable oil and additives according to the amount of the work order, and use a mixer to mix the semi-finished product, filler, drier, drying vegetable oil and additives evenly, and use a viscometer, parallel plate viscometer, colorimeter and spectrodensitometer to test the items. If the test is qualified, it is the finished ink, and the finished ink is packaged into each container. Example

[0017] In the fourth embodiment, the following steps are added: In step 7, the stirring speed is 700 r / min-1000 r / min, and the stirring time is 60 min-90 min.

[0018] Prepare the pigment, filler, varnish, drying agent, drying vegetable oil, additives and pull cylinder for ink production in advance. Add varnish and pigment accurately according to the quantity of the work order. Use a mixer to mix the pigment and varnish evenly. The stirring speed is 600r / min-800r / min and the stirring time is 40min-60min. Grind the semi-finished product that is evenly mixed with a grinding machine. The grinder uses a three-roller machine. The purpose of grinding is to reduce the fineness of the semi-finished product. Check whether the semi-finished product after grinding is qualified. If not, continue to grind until it is qualified. Use a scraper fineness meter for testing. , test the fineness of grinding, accurately add fillers, drying agents, drying vegetable oils and additives according to the amount of the work order, use a mixer to mix the semi-finished products, fillers, drying agents, drying vegetable oils and additives evenly, the stirring speed is 700r / min-1000r / min, the stirring time is 60min-90min, use a mixer to mix the semi-finished products, fillers, drying agents, drying vegetable oils and additives evenly, use a viscometer, parallel plate viscometer, colorimeter and spectrodensitometer to test the items, and if the test is qualified, it is the finished ink, and the finished ink is packaged into various containers.

[0019] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-odor quick-drying offset printing ink and a preparation method thereof, characterized in that: It comprises pigment, filler, drying agent, connecting material and auxiliary agent, and its weight proportion is: pigment 12-18%, filler 3-10%, connecting material 55-75%, drying agent 1-5%.

2. A low-odor, quick-drying offset printing ink according to claim 1, characterized in that: The drying agent is specifically one or more of zinc, iron and cerium.

3. A method for preparing a low-odor fast-drying offset printing ink The low-odor fast-drying offset printing ink according to claim 1, characterized in that: The following steps are involved: Step 1: Preparation: Prepare the pigments, fillers, binders, driers, drying vegetable oils and additives for ink production in advance; Step 2: Input: Accurately input the connecting materials, pigments and fillers according to the quantity of the process order; Step 3: Mixing: Use a mixer to mix the pigment, filler and connector evenly; Step 4: rolling: grinding the semi-finished product evenly mixed using a grinder; Step 5: Inspection: Check whether the semi-finished product after grinding is qualified. If not, continue grinding until it is qualified; Step 6: Conditioning: Add drying agent, drying vegetable oil and additives accurately according to the quantity of the work order; Step 7: Inspection: Use a viscosity meter, parallel plate viscometer, color development instrument and spectrodensitometer to test each item. If the test is qualified, it is the finished ink; Step 8: Canning: Divide the finished ink into individual containers.

4. A low-odor quick-drying offset printing ink and a preparation method thereof according to claim 1, characterized in that: In step 5, a scraper fineness meter is used to detect the fineness of the grinding.

5. A low-odor quick-drying offset printing ink and a preparation method thereof according to claim 1, characterized in that: In step 3, the stirring speed is 600 r / min-800 r / min, and the stirring time is 40 min-60 min.

6. A low-odor quick-drying offset printing ink and a preparation method thereof according to claim 1, characterized in that: In step 4, the grinder adopts a three-roll mill, and the purpose of grinding is to reduce the fineness of the semi-finished product.

7. A low-odor quick-drying offset printing ink and a preparation method thereof according to claim 1, characterized in that: In step 7, the stirring speed is 700 r / min-1000 r / min, and the stirring time is 60 min-90 min.