Color difference in gray color pulp

Reason analysis: The density of black molecules is relatively high, and prolonged placement will cause sedimentation, resulting in color differences. Solution: Please stir thoroughly before use to ensure even dispersion and avoid color differences.

Single-component platinum storage environment

Dear new and old customers and friends, due to seasonal changes and gradually increasing temperatures, to avoid affecting the performance of single-component platinum, please refrigerate the product at 0 to 10 degrees Celsius.

The quality of the ink directly affects the quality of packaging printing

Ink is the main raw material for printing. Only by thoroughly understanding the structure and working principle of ink can high-quality prints be produced. In order to meet product quality requirements, printing plants must have a detailed understanding of ink properties when using ink to ensure that the printed products meet printing adaptability and various testing indicators. The main components of ink are colored pigments and binders. The colored pigments play a color-rendering role, forming a contrast with the color of the substrate to show the image on the substrate. Only by correctly understanding and recognizing the ink and adjusting the proportions of the various components of the ink can the ink achieve its required printability and usability.

How to determine if UV ink is cured?

Four methods to determine if UV ink is completely cured after UV lamp irradiation: 1. Pencil hardness test All UV ink technical conditions include pencil hardness. According to this requirement, we can use a pencil hardness tester. If the requirement is met (generally 3-4H), it proves that the ink is completely cured. 2. Solvent dripping method test As mentioned above, the technical conditions of UV ink also include solvent resistance. Because after the ink is completely cured, the internal molecular structure will change, converting to double bonds. The higher the conversion, the more complete the curing, and the overall shape of the ink will change accordingly.

What is the impact of seasonal environmental changes on the use of adhesives?

The good compounding effect of two-component polyurethane adhesives is related to many factors, and changes in the working environment are also important influencing factors. In other words, with the change of seasons and climate, in order to obtain the ideal compounding effect, it is necessary to make some fine adjustments to the adhesive application process. Simply put, the seasonal and climatic changes affecting the compounding are the changes in the two major indicators of environmental humidity and temperature: specifically, in spring and summer, especially during the rainy season, the relative humidity of the air is relatively high, and can even reach saturation, while in autumn and winter, the air is dry and the humidity is low; in terms of temperature, summer is much higher than winter, and the maximum difference between the two can be

Analysis of common problems and solutions for UV (photocuring) adhesives

1. What are the differences between UV glue and other glues? UV glue initially cures in 1-5 seconds under ultraviolet light, and bonding is completed in 20-30 seconds. After irradiation, it reaches a high strength, meeting the needs of automated production lines; the second-generation acrylic structural adhesive initially cures in 1-10 seconds, but takes 24 hours to reach its maximum strength; room temperature curing epoxy structural adhesive initially cures in 10-120 minutes, and takes 7 hours to reach its maximum strength. 2. Is UV glue toxic? Why does using UV glue cause skin redness and itching? UV glue is a green, environmentally friendly, and economical chemical product. It does not contain any organic solvents and has 100% solid content. It is...

How to choose between silicone color masterbatch and silicone color paste?

Ensure safety and environmental protection. What are the characteristics of food-grade silicone color paste? Essential knowledge points that silicone product manufacturers should know. Do you really know them all? Today, Huachen Baocai editor will share with you again. 1. Characteristic 1: Smell. Food-grade silicone color paste is non-toxic and odorless. If you smell a pungent smell directly with your nose, then the kitchen household silicone kneading pad is for special use. During the epidemic, everyone stayed at home and became kitchen masters, and their cooking skills soared. Among them, there are many chefs who use flour, such as: dumplings, buns, steamed buns, bread, etc.; in addition to flour, making noodles also requires

Which color raw materials are safer and healthier for silicone tableware?

Generally, silicone tableware products are qualified, safe, and healthy. However, to be on the safe side, it is better to choose transparent and colorless ones. The silicone raw material itself is colorless or transparent because it contains fewer chemical components. However, if it is for aesthetics, colored ones can also be chosen. Colored silicone tableware products are colored by adding food-grade silicone color paste to the silicone raw materials. Although silicone color paste chemical components are added, as long as the silicone color paste is qualified, safe, and healthy, it is also a good choice. Using Taike food-grade silicone color paste as the color raw material for silicone tableware products is safer, healthier, and more environmentally friendly. Huachenbao