From the current state of application, it can be divided into two types from its printed matrix, namely, a porous matrix and a non-porous matrix. Water-based flexographic printing inks are commonly used for printing on the surface of a porous substrate; about two-thirds of the non-porous substrate surface is printed using a solvent-based ink. The use of water-based flexographic inks at home and abroad is an increasing trend.
1. Types: As mentioned above, the flexographic ink is a liquid ink, and its drying method is to penetrate into the substrate (paper) or to volatilize the solvent.
2. Formulation: The solvent used in this low viscosity (100-250 cps) liquid ink is based on the polymer in the dissolving ink. Typical solvents used are water and alcohol, as well as small amounts of glycol ethers, oximes, and aliphatic hydrocarbons. Its film-forming polymers are polyamides, nitrocellulose, rosin, shellac, and acrylates, which are usually used to modify one of these polymers (eg, nitrocellulose can increase heat resistance. Polyamide can increase gloss and flexibility). In most flexographic inks, two or more polymers or solvents are generally used to achieve a balance in performance. The flexographic ink system typically contains 7 to 15 different components. These components make up the general category of pigments, polymers, solvents, and additives used in typical flexographic inks.
The following is a brief description of the preparation of solvent-based inks and water-based flexographic inks:
1. Solvent-based flexographic inks: As mentioned above, solvent-based flexographic inks are formulated primarily for printing non-porous substrate surfaces.
About 75% of all plastic inks use alcohol-soluble polyamine resin, which represents the reference formulation as follows:
Component Weight% Polyamide Resin 13S/S Nitrocellulose 2* Organic Pigment 15 Filler 5 Plasticizer, Wax 5 Ethanol 55 Ester 5100
Note: * If white ink based on TIO2: is manufactured, this amount can be doubled to reduce the amount of ethanol.
The following reference formulation is a "modified nitrocellulose" ink with good gloss and heat resistance, suitable for printing foils, coated cellophane and paper:
Component Weight % Polyamide Resin 10S/S Nitrocellulose 5* Organic Pigment 15 Filler 5 Plasticizer, Wax 10 Ethanol 50 Ester 5100 If printing ink for coated cellophane is required, then the above formula should be Films, ie modified rosins, are replaced with acrylics so that they do not affect the heat seal.
At present, the flexible plastic film used for composite packaging develops rapidly, which requires an ink that is suitable for printing on the plastic film and then compounded with another plastic film or paper to make it have a good ink. Sealed packaging for printing and heat sealing properties. The composite ink for printing here does not come into contact with the inner package nor contact with air. This composite ink does not require gloss and does not require scratch resistance and rub resistance (because they are protected by the composite film). This type of ink does not contain wax or very little and therefore does not cause a decrease in the adhesion between the composite films.
1. Types: As mentioned above, the flexographic ink is a liquid ink, and its drying method is to penetrate into the substrate (paper) or to volatilize the solvent.
2. Formulation: The solvent used in this low viscosity (100-250 cps) liquid ink is based on the polymer in the dissolving ink. Typical solvents used are water and alcohol, as well as small amounts of glycol ethers, oximes, and aliphatic hydrocarbons. Its film-forming polymers are polyamides, nitrocellulose, rosin, shellac, and acrylates, which are usually used to modify one of these polymers (eg, nitrocellulose can increase heat resistance. Polyamide can increase gloss and flexibility). In most flexographic inks, two or more polymers or solvents are generally used to achieve a balance in performance. The flexographic ink system typically contains 7 to 15 different components. These components make up the general category of pigments, polymers, solvents, and additives used in typical flexographic inks.
The following is a brief description of the preparation of solvent-based inks and water-based flexographic inks:
1. Solvent-based flexographic inks: As mentioned above, solvent-based flexographic inks are formulated primarily for printing non-porous substrate surfaces.
About 75% of all plastic inks use alcohol-soluble polyamine resin, which represents the reference formulation as follows:
Component Weight% Polyamide Resin 13S/S Nitrocellulose 2* Organic Pigment 15 Filler 5 Plasticizer, Wax 5 Ethanol 55 Ester 5100
Note: * If white ink based on TIO2: is manufactured, this amount can be doubled to reduce the amount of ethanol.
The following reference formulation is a "modified nitrocellulose" ink with good gloss and heat resistance, suitable for printing foils, coated cellophane and paper:
Component Weight % Polyamide Resin 10S/S Nitrocellulose 5* Organic Pigment 15 Filler 5 Plasticizer, Wax 10 Ethanol 50 Ester 5100 If printing ink for coated cellophane is required, then the above formula should be Films, ie modified rosins, are replaced with acrylics so that they do not affect the heat seal.
At present, the flexible plastic film used for composite packaging develops rapidly, which requires an ink that is suitable for printing on the plastic film and then compounded with another plastic film or paper to make it have a good ink. Sealed packaging for printing and heat sealing properties. The composite ink for printing here does not come into contact with the inner package nor contact with air. This composite ink does not require gloss and does not require scratch resistance and rub resistance (because they are protected by the composite film). This type of ink does not contain wax or very little and therefore does not cause a decrease in the adhesion between the composite films.
Ice Hockey Puck,Mini Hockey Pucks,Round Ice Chilly Puck,Cooling Gel Ice Hockey Puck
Changzhou Jisi Cold Chain Technology Com,Ltd , https://www.cooler-boxs.com