At present, domestic plastic gravure inks are mainly solvent-based inks, and alcohol-soluble plastic gravure inks with low solvent residues are gradually being promoted. The ink is just beginning to be put into use. Plastic film gravure water-based ink is an environmentally friendly liquid ink made of water as a solvent. It has the characteristics of non-flammable, non-explosive, non-toxic, non-irritating, stable ink, bright color, high gloss, non-corrosive printing plate, easy operation, low printing cost, good adhesion after printing, strong water resistance, rapid drying and so on. Since the water-based ink does not contain volatile cloth solvent, it improves the working environment, completely eliminates the toxic and harmful substances in the solvent-based ink, and eliminates the pollution of the packaged goods. It is mainly used for printing food bags, shopping bags, fresh milk packaging bags, medicine packaging bags, sausage bags, candy bags, beverage bags, children's bags in rotary gravure printing machines on PE, PP, PET, PVC and other films that have undergone electrical discharge treatment Toy printing bags and other packaging and printing products. Adapt to printing speed 20-100m / min. According to relevant reports, the National Certification and Accreditation Administration will enforce food certification and control systems (ie 3C certification) for food packaging products including food packaging bags and beverage packaging bags. standard. Only plastic food packaging products that meet the 3C standard can be marketed. This is a great challenge and an excellent opportunity for more than 10,000 color printing packaging enterprises and ink production enterprises across the country. Ink and ink applications are mainly flexographic and gravure printing. The inks widely used abroad have good environmental protection and good ink performance, mainly represented by stable ink properties, high brightness, strong tinting strength, high adhesion fastness, drying speed can meet the needs of printing speed, four-color overprint and spot color printing Yes. Water-based gravure ink has been widely used in the printing of packaging paper, cardboard, paper and other paper products. This is due to the better evaporation and absorption drying of paper products. Water-based inks are used in flexographic printing. China is currently developing rapidly in the country, and more than a dozen ink factories have developed water-based inks for flexo printing machines. The proportion of ink in flexo printing machines is increasing day by day. However, the application of water-based gravure inks to plastic film printing is still in its infancy in China. This is mainly due to the fact that water-based inks cannot achieve solvent-based inks in terms of adhesion, printing speed, and light speed. The WE-type gravure water-based ink has brought new products in the field of plastic film gravure printing that can fully meet the qualified standards. colour Tinting power luster Fineness (micron) Tu-4 viscosity seconds / 25 ℃ Initial drying mm30S25 ℃ Initial drying 5/28 ℃ Sticky fastness Rubbing fastness Sample of a domestic company Scarlet it is good Big 20 115 6 123 difference it is good A sample of a foreign company Scarlet it is good Very big 30 twenty two 12 215 Slightly worse it is good WE ink sample Scarlet it is good Very big <10 26 17 202 it is good it is good (The film used is a corona-treated BOPP film with a surface tension of 38 dynes / cm) Three water-based gravure inks have been tested and concluded after production: The main defect of 1 # product is poor adhesion fastness, slow drying speed, and can be used in production, but the fundamental problem has not been solved. 2 # product can be used on 30-100m / min gravure printing machine, but there is a defect that the adhesion is slightly poor. BOPP film printed with concave WE type water-based gravure ink is boiled in boiling water (100 ℃) for half an hour, then taken out and blown dry. If the fastness of the paste is the same as before boiling, no ink will be lost. Put it in 30% strength hydrogen peroxide water at 40 ℃ for two minutes, then take it out and dry it. The gloss is as before and the fastness of the paste remains unchanged. Proven in production and printing, the performance of WE water-based gravure ink has fully met the requirements of the production of gravure printing machines. The main performance indicators such as adhesion fastness, drying speed, color density and glossiness have reached the international advanced level of similar products. . Precautions for using plastic film gravure water-based ink: The viscosity of the ink can be adjusted with water during use, and the -4 viscosity is 15-25 seconds / 25 ℃. If the viscosity is too high, the transfer performance of the ink will be poor, and it is easy to cause ills such as dirty plates and paste plates; while if the viscosity is too low, it will cause light colors, dot expansion, and uneven ink. The printing plate adopts electric engraving or laser engraving, and the plate depth should be between 15-25mm. Light version can increase printing speed and save ink. If the version is too deep, it will affect the printing speed, and the ink consumption is large, and it is easy to cause sticking. The drying temperature is preferably 50-60, and the air volume is large, so that the ink transferred to the film is quickly dried. Before printing, after the ink is poured into the ink tank, allow the printing plate to idle for 2-3 minutes to play the role of adjusting the humidity of the printing plate and stirring. When the printing process is temporarily stopped when observing the printed products, the printing plate must not be stopped to prevent the ink on the printing plate from drying out and making the plate blocked. For example, the plug plate can be wetted and cleaned with a special plate washing liquid. After adjusting the viscosity of the ink according to the depth of the plate before printing, try not to add water to the ink during the printing process, just add new ink to ensure that the color and color density of the printed product are consistent before and after. After printing, the printing plate should be cleaned immediately, the remaining ink is installed, put the water into the tank, turn the printing plate to clean the ear, or adjust it to 3% detergent solution for cleaning. The WE-type water-based gravure ink launched by Beijing Yingkefan Chemical Products Co., Ltd. is willing to go hand in hand with friends in the packaging and printing industry for mutual benefit and win-win service for our green packaging printing. Food Tongs come in different sizes. The long sizes are very important while we want to picking up the foods from cooking over an open flame or splattering grease, they could protect your handles against danger.
Which are better for smaller pieces of food, it is the Scissor-type Food Tong. You could slide one finger through a hole in one of the handles, it is the same work as you using scissors. And they are flexible works.
Food Tongs Food Tong,Kitchen Tong,Multi Tong,Kitchen Food Tongs Fortary Industry&Trading Co., Ltd. , https://www.kitchenset.de
Plastic film gravure water-based ink performance comparison table:
