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Low-foam fountain solution and preparing method thereof

A dampening solution and low-foaming technology, which is applied in the preparation and printing of the printing surface, can solve the problems of foaming in the dampening system, affecting the effect of the dampening solution and the normal operation of the printing system, and achieves good plate cleaning effect and excellent Biodegradable, bright ink effect

Active Publication Date: 2014-10-08
ANHUI SOYA DECORATIVE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the operation of the printing system, due to the high-speed operation of the equipment, foam will be generated inside the dampening system, which will affect the effect of the dampening solution itself and the normal operation of the printing system.

Method used

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  • Low-foam fountain solution and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: Preparation of fountain solution

[0019] A low-foaming fountain solution prepared from the following components by weight (kg): sodium fatty acid methyl ester ethoxylate sulfonate 8, dimethyl carbonate 1.5, percarbamide 2, limonene 2, alkanes Sodium naphthalene sulfonate 2, dimethyl glycine 3, indole acetic acid 0.8, geranial 2, lauryl alcohol 2, polymaleic anhydride 2, palm wax 1.5, additive 8, water 40;

[0020] Among them, the auxiliary agent is made of the following raw materials by weight (kg): glycerin 7, polyethylene glycol 6, glycine 1, citric acid 2, oleic acid 1.5, clove oil 0.5, rhamnose 0.5, tea polyphenol 0.5, carbonic acid Sodium hydrogen 2, sodium citrate 18, Tween 80 3, water 40; first dissolve citric acid and sodium citrate in water, heat to 50-60°C, then add glycerin, polyethylene glycol, clove oil, oleic acid and sodium bicarbonate, stirred for 15 minutes, cooled to room temperature, added the rest of the raw materials, stirred until c...

Embodiment 2

[0025] Embodiment 2: Fountain solution performance test

[0026] 1. Ink emulsification rate

[0027] Fountain solution mainly affects the balance performance of water and ink in the printing process, and the emulsification rate of ink is an important parameter. The nature of the fountain solution has an important influence on the ink emulsification rate. According to the principle of offset printing, it is feasible for the ink emulsification rate to be lower than 26% during the offset printing process.

[0028] Determination of ink emulsification rate C: by weight method.

[0029] Dilute the dampening solution described in Example 1 to 3% with distilled water, add 50 g of black ink and 50 g of the diluted dampening solution to the container at one time, stir at 100 r / min for 1 hour and then let it stand for 10 minutes, remove the unabsorbed dampening solution The liquid and the ink are separated in layers, and the emulsification rate of the ink is calculated according to th...

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Abstract

The invention discloses a low-foam fountain solution. The low-foam fountain solution is characterized by being composed of, by weight, 2-10 parts of fatty acid methyl ester ethoxylate sodium sulfonate, 1-2 parts of dimethyl carbonate, 1-3 parts of percarbamide, 1-3 parts of limonene, 1-3 parts of sodium alkyl naphthalene sulfonate, 1-5 parts of dimethylglycine, 0.5-1 part of heteroauxin, 1-3 parts of geranialdehyde, 1-3 parts of laurinol, 1-3 parts of polymaleic anhydride, 1-2 parts of palm wax, 5-10 parts of assistants and 30-50 parts of water. When the fountain solution is used, foam is avoided, cost is low, the wetting effect is good, an image and a text are clear and high in restoration degree, the plate cleaning capacity is high, and the printing effect is stable.

Description

technical field [0001] The invention relates to a printing fountain solution, in particular to a low foam fountain solution and a preparation method thereof. Background technique [0002] The principle of offset printing is the principle of immiscibility of oil and water. First, water is supplied to the printing plate, and then ink is supplied to the printing plate, so that the graphic part of the printing plate has ink but no water, and the blank part has water and no ink. The water used to moisten the printing plate is the fountain solution. Fountain solution is not ordinary clear water, but a liquid with chemical substances and electrolytes added to the water. Its performance is one of the key factors determining the quality of offset printing products. During the operation of the printing system, due to the high-speed operation of the equipment, foam will be generated inside the dampening system, which will affect the effect of the dampening solution itself and the norm...

Claims

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Application Information

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IPC IPC(8): B41N3/08
Inventor 李华令肖昌明向凯
Owner ANHUI SOYA DECORATIVE MATERIALS
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