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Paper ink absorption is not only related to the degree of porosity and capillary state of the paper, but also related to the surface properties of the paper fiber, the content of fillers, pigments, adhesives, ink composition and characteristics, printing methods, printing pressure and other factors. In actual printing, the absorption of ink by paper can be divided into two stages. The first stage ...
1.Ink The three primary color inks have different degrees of color bias, which will affect the color bias of the whole picture to different degrees. However, a small amount of color bias can be corrected from the ink preparation. When printing to grasp the gray balance of the ink used, the same amount of yellow, product, green do not produce neutral gray, they produce lighter, more turbidity with ...
Insufficient or uneven amount of glue due to insufficient amount of glue produced by the white spot can be observed in the composite machine. In the dry composite process, the coated adhesive must be able to fill the bumps and bumps on the surface of the ink and film to avoid appearance defects such as obvious white spots. When the water-based adhesive dry composite is used to produce lightweight ...
Paper aluminum-plastic composite film in the actual application of medical packaging powder, granule packaging products compared to the plastic aluminum-plastic packaging commonly used in the market now has the following advantages: (1)The mechanical strength of the paper is high, the rigidity is good, and the ability to maintain the bag after forming is strong, which improves the cleanliness of t...
First, what is the adhesion of resin Resin adhesion refers to the ability of the resin coating to adhere to the substrate. Insufficient adhesion of the resin on the surface can cause it to fall off or foam, and affect the service life and performance of the product. Second, how to effectively improve the adhesion of resin 1. Surface treatment Surface treatment is an effective method to improv...
First, emulsion resin Emulsion resin refers to resin particles suspended in water, which is widely used. There are many different emulsion resins on the market, such as polyurethane, acrylic, etc. They have the characteristics of strong adhesion, fast drying, etc., suitable for various printing and coating fields. Second, solvent-based resin Solvent-based resins should pay attention to environment...
First. Application of paper coating Paper coating is mainly used in packaging printing, book printing, poster printing and other fields, which can improve the gloss of paper, waterproof, oil-proof, wear-resistant, anti-folding and other functions. The paper coating can not only improve the quality of the paper, but also enhance the durability, stability and aesthetics of the paper, and is also a s...
Water-based adhesives for more sustainable bonding Water-based adhesives are an excellent alternative to solvent-based systems because they do not contain any volatile organic compounds (VOCs), are lighter in weight, and generally require less product to form a lasting bond. Compared to other solutions, water-based adhesive systems are environmentally friendly, have low VOC content and are more us...
01 permanent and can remove sexual choice In terms of the performance of binders, it is generally divided into two categories: permanent adhesives and removable adhesives. Permanent commonly used in electronic, mechanical, do not need to remove out. Removable is generally used for food or everyday items, such as fruit labels, clothing labels, etc. 02 The difference between objects to be affixed Se...
The characteristics of paper varnish mainly include the following aspects: Fast curing speed The curing speed of paper varnish is extremely fast. Especially when using UV technology, the curing process can be completed within a few seconds to a few minutes, making it suitable for high-speed printing and multi-color printing. Excellent environmental protection performance Many modern paper varnish ...
As the market's requirements for product packaging become increasingly stringent, various printing packaging products have placed higher demands on the adhesives they use, which has also spurred the rapid development of water-based packaging adhesives. Currently, our series of products such as box coating and paper mounting glue, water-based varnish, and paper tube varnish have received excellent ...
sinograce chemical
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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