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There are four common waterborne polyurethane thickeners: ①Inorganic thickeners, such as flake silicates, fumed silica, etc.; ②Natural organic thickeners, such as cellulose ethers; ③Synthetic organic thickeners, such as polyacrylates, polyvinylpyrrolidone; ④associative thickener. This paper mainly introduces the associated emulsion thickener. Associative emulsion thickeners are non-ionic synthetic...
Ink resin is the pigment carrier in the ink, is the core material of the ink, its quality is good or bad, will directly affect the performance of the ink, because the connection material to a large extent determines the viscosity of the ink, viscosity, dryness, fluidity and other properties. Color fastness The adhesion between the ink and the substrate mainly includes the chemical bond force ...
Organic pigment is the most basic material to provide color to the ink, but as the ink attached to the surface of the substrate, the color shown to the consumer often produces more or less deviations from the color of the pigment itself. The reason is that in the ink, the pigment particles do not exist alone, but are dispersed in the connecting material medium. Microcosmic, the best wetting disper...
Anti-viscosity is an important physical property index of printing ink.Gravure printing is a kind of printing method with high ink supply, good reproducibility and fast printing speed. Most of the inks used are solvent-based volatile drying inks.After the ink is transferred to the substrate through the printing plate, it passes through the drying channel, and the organic solvent is quickly volatil...
In gravure printing, ink resolubility is also a key indicator to test the performance of ink. Especially in the color ink printing, the moderate resolubility can not only make the color fully displayed, but also solve the problem of shallow plate mesh blocking and overprinting cross-color. In color ink printing, according to the different hue requirements, the depth of the ink hole mesh of the pri...
After the ink is stored for a period of time, the upper part of the ink appears thin in the container, the viscosity is small, and the color and concentration are relatively poor; The lower part is thick, the viscosity is large, and the color and concentration are also relatively good. Intaglio printing inks are thin and have a small viscosity, because the pigment is poorly dispersed in the connec...
In order to prevent ink delamination and pigment precipitation, users must be fully stirred before printing. The following summarizes the faults and elimination methods of screen printing ink in use for your reference. 1.Poor adhesion: the reason is improper selection of ink, insufficient pre-press treatment, impurities in the substrate, insufficient drying temperature, insufficient time, improper...
The resins that can be used for water-based gravure inks are acrylic resin, polyurethane resin, alkyd resin, etc. Each resin has different characteristics and application occasions, and needs to be selected according to the actual situation. First, water-based gravure ink overview Water-based gravure ink is an environmentally friendly ink, compared with traditional ink, its volatility is small, no...
With the development of the application of digital inkjet printing technology in the clothing industry, environmental monitoring is more stringent and the demand for small batch production and personalized customization is increasing. Therefore, the requirements for textile coating ink are becoming higher and higher, and the raw materials for the production of textile coating ink are bec...
1. Coatings field: Waterborne polyurethane is widely used in waterborne printing inks, wood coatings, metal coatings, automotive coatings, architectural coatings and other fields because of its small curing shrinkage rate, good acid and alkali resistance, wear resistance, weather resistance and chemical stability. 2. Adhesive field: Waterborne polyurethane adhesive has shear vi...
Protective film resin Automobile coating resin High resilience waterborne polyurethane resin 1.Typical properties Appearance： Milky white liquid Protective film resin Automobile coating resin Ph： 7.0-9.0 Automobile coating resin Solid content： 40±1% Charge： Anionic High resilience waterborne polyurethane resin Viscosity (25℃)： 300-800cP Elongation (%)： >200...
As an important material for printing, ink is composed of resin, pigment, filler and auxiliary. Due to many industries such as books, packaging, construction, and circuit boards, with the gradual increase in social demand, the use of ink is also increasing. However, in the production and use of ink, due to the addition of surfactants, equipment stirring operation and environmental changes will cau...
The main difference is that the nature is different, the production process is different, and the characteristics are different, as follows: First, the nature is different 1.Flexo printing Flexo printing is a direct printing method known as flexo printing because of the use of elastic, raised image plates. 2.Gravure printing Gravure refers to gravure printing, first the printing plate on the exces...
Color paste, also known as pigment paste, is an important form of dye application, which is widely used in textile, ink, paint and other industries. In the classification of pastes, low-halogen pastes and ordinary pastes are two common types. They have certain differences in composition, performance and use, and the differences between the two types of pastes will be discussed in detail below. Fir...
1.There are many formulations of coated glue, and different formulations need to be determined according to the specific use. It generally includes basic glue, thickener, curing agent, auxiliaries and other ingredients. 2.Basic glue is the most important component of laminating glue, it can be selected according to different use requirements of different types, such as water-based, oily, dilu...
The performance requirements of water-based varnish for printing paper glazing are as follows: 1.The film has good environmental resistance. Some of the printed matter after glazing is used to make all kinds of packaging cartons, in order to be able to play a good protective effect on the packaged products, the environmental resistance of the glazing film layer must be better. For example, the pac...
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Sinograce Chemical is professional technical enterprise providing solutions of surface materials and manufacturing of raw materials. Sinograce Chemical Company is composed of R&D center, Manufacture center, Quality control department, Market center and International trade department. We have been dedicating to research on excellent paint/coating, adhesive for over 15 years. And now still conti...
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