Editor's Note: The printing process, like screen printing, has a wide range of adaptability to the substrate materials, and thus occupies an important position in the special printing industry. A simple summary of the common quality problems in the pad printing process is provided for reference by relevant personnel.
Problem Cause Analysis Solution The gloss of the ink layer is poor. The surface of the substrate is greasy and dusty. As a result, the ink cannot be completely transferred. The surface of the substrate should be cleaned before printing. The ink is too dilute. Add an appropriate amount of the original ink to the ink. Diluent, adjust the viscosity of the ink. Ink mixing is not uniform. There should be sufficient ink evening time before starting. There are bubbles of ink. Dirty ink. Filtration of the ink. The ink is too thin. The resin binder is precipitated and then the appropriate amount of the original ink is mixed. The ink is deteriorated. The ink is changed. Degree of difference in the ink to join the bright light material or in the substrate surface and then coated with a layer of gloss oil ink is too thin Add ink to improve ink viscosity. Poor adhesion of the ink itself. 2. Replace the ink layer. Intolerable friction UV ink curing is not complete. In the UV curing, the curing speed should be reduced. Prolong the curing time. The proportion of the two-component ink is not correct. To prepare the surface properties of the substrate and the printing ink to degrease, roughen, oxidize, and corrode the surface of the substrate. Too hard to select the harder rubber head. Imprinting the fuzzy rubber head. The shape of the rubber head is not correct. Use the static eliminator to eliminate static electricity or The antistatic agent is added to the ink. The surface of the substrate has an electrostatic plastic head. The shape of the plastic head should conform to that of the surface of the substrate. The air is not cleaned when the stamping is applied. Select the tip of the county. The tip of the plastic head is not right. Select the plastic head to print When the complete pattern is compressed, the rubber head shape with a compression amount of 10mm is too soft. The hardness of the rubber head is too high. The edges of the parts of the steel plate are rough. Retort the corrosion of the steel plate. The update plate making machine runs too fast and reduces the printing machine's running speed. Solvent selection is not correct for adding over 2% of out-of-print graphics. Oversized prints are not pre-distorted. According to the shape and deformation of the substrate. Potential, stretching and compressing when making film, increasing or decreasing the design of graphic and positioning fixtures Improper printing materials on the fixture should ensure that the plastic head has less deformation when imprinting. Printing plate and film attachment Does not closely update the printing plate positioning jig production accuracy is poor, the substrate is loose The phenomenon of the substrate position on the fixture can not occur obvious displacement Color plate repeat accuracy is poor, resulting in poor repeatability of the steel plate Reprint printing is not allowed to print plastic head Plastic deformation occurs during the printing process. The curing process is not sufficient. The plastic head should be redone. Multi-color printing machine. Registration accuracy. The difference between the printing machine registration error should be controlled below 0.10mm. Pressure instability Gas source Pressure pinhole substrate Dust particles on the surface to be surface treated before printing
Compostable spoons are an alternative to traditional plastic spoons, which are made from non-renewable resources and can take hundreds of years to decompose. They are often used in settings where single-use utensils are necessary, such as take-out restaurants, food trucks, and outdoor events.
Compostable Spoon,Biodegradable Spoons,Compostable Plastic Spoons,Disposable Spoons
Anhui Jianfeng Environmental Protection Technology Co., Ltd , https://www.ahbiocutleries.com