At present, most of the packaging industry in China uses benzene-soluble compound inks based mainly on chlorinated polypropylene, which tends to pollute the environment and pose potential risks to foods. With the strengthening of domestic environmental awareness and sound health and safety regulations, China's flexible packaging inks Products are rapidly developing in the direction of environmental protection and health. Polyurethane inks account for more than a year. Due to the late arrival of domestic companies in the field of polyurethane inks, some properties of polyurethane inks have not yet been understood by the majority of users. After printing, recombination has failed to receive attention and it is often prone to some details. At the same time, polyurethane ink in the production process of higher technical requirements, the operator is proficient in mastering the use of polyurethane ink will directly affect the quality of the product. For example, polyurethane inks generally use keto solvents as the true solvents, and are used as binder resins for dissolving inks. Commonly used solvents include butanone, isopropanol, and toluene. Among these three solvents, butanone has the fastest rate of volatilization. During the printing process, the amount of butanone is not replenished in a timely manner, causing the ink in the ink tank to swell due to the poor solubility of the resin, and the viscosity increases. The adhesion of the ink to the film. Therefore, when using a polyurethane ink, butanone must be maintained in a relatively sufficient amount in the dilution solvent. When the polyurethane ink is printed in the summer, the viscosity of the ink rises quickly. The operator must continuously replenish the diluent solvent and keep the ink in the ink tank always at a relatively low viscosity. Choosing the right front house doors depends on a couple different factors. Style and material should be considered so the door complements your home and provides benefits like energy efficiency. Also, understanding terms like pre-hung and slab door is helpful, too.Planning to have new and improved exterior doors can get complicated. First dilemma would be choosing what type of door you would want, picking out one from the different choices, checking for its quality, and looking for a professional to properly install it. we have a team of well-trained and knowledgeable individuals who can assist you on giving you advices as to which doors are best for your house, and accurately install them for you. Front Doors,Exterior Front Doors,Hardboard Flush Doors,Solid Wood Front Doors HOPE IKEA , https://www.skywardrobes.com
Polyurethane inks have high gloss, good resistance (such as temperature resistance, oil resistance, weak acidity and alkali resistance), environmental protection, and wide applicability. In recent years, the development speed of the polyurethane ink has been fast, and the usage has been rising. In terms of application, polyurethane inks can be used for the printing of various types of foods, pharmaceuticals, daily necessities, and other flexible packaging products, and polyurethane inks with different properties can be selected for the requirements of the post-processing process.
In addition, in addition to the technical requirements are higher, the price is also a major drawback of polyurethane ink, the price is higher than chlorinated polypropylene ink more than 1/3, therefore, the promotion and application of polyurethane ink caused some difficulties.
In foreign countries, especially in the gravure ink market such as the European Community, the chlorinated and cyanide inks are in the rank of elimination, and polyurethane inks are very popular. The use of polyurethane ink in the domestic market accounts for 20 to 30% of the entire ink industry, most of which are used in the packaging and printing of high-end products, while the packaging and printing of medium and low-end products still use chlorinated-c-type inks. Therefore, if we can make further improvements in technology and price, China's polyurethane ink will have great room for development.
Source: Soft Packing
Polyurethane ink