Whether we go to a breakfast restaurant or order takeout, we often see this phenomenon: the boss skillfully tore off a plastic bag, then put it on the bowl, and finally put the food in it quickly. In fact, there is a reason for this. : Food is often stained with oil. If it needs to be cleaned, it...
Is plastic a conductor or an insulator? First, let’s understand the difference between the two: A conductor is a substance that has a small resistivity and conducts electricity easily. An insulator is a substance that does not conduct electricity under normal circumstances. The characterist...
Are our common plastics crystalline or amorphous? First, we need to understand what is the essential difference between crystalline and amorphous.
Crystals are atoms, ions or molecules that are arranged in space according to a certain periodicity to form a solid with a certain regular geometric s...
The different properties of plastics determine its use in the industry. With the advancement of technology, research on plastic modification has not stopped. What are the main characteristics of plastics?
1. Most plastics are light in weight, chemically stable, and will not rust;
2. Good impact r...
Paper has good elasticity and toughness, which can provide good protection to the packaged material; paper is not affected by heat and light, such as health food and medicine, paper is a traditional packaging material, and it is especially suitable for people who want to get natural Those product...
Food packaging paper is a packaging product with pulp and cardboard as the main raw materials. It needs to meet the requirements of non-toxic, oil-resistant, waterproof and moisture-proof, sealing, etc., and the paper used for packaging food that meets the safety requirements of food packaging. B...
Achromatic colors have the same psychological value as chromatic colors. Black and white represent the yin and yang poles of the color world, black means nothingness, like eternal silence, and white has endless possibilities.
1. Black: From a theoretical point of view, black means no light and i...
Dispersant is a commonly used auxiliary agent in toner, which helps to wet the pigment, reduce the particle size of the pigment, and increase the affinity between the resin and the pigment, thereby improving the compatibility between the pigment and the carrier resin, and improving the dispersion...
The production process requirements of color masterbatch are very strict, and the wet process is generally used. The color masterbatch is ground and phase-inverted by water, and a series of tests should be carried out while the pigment is being ground, such as the determination of the fineness, d...
When light acts on plastic products, part of the light is reflected from the surface of the product to produce luster, and the other part of the light is refracted and transmitted into the interior of the plastic. When encountering pigment particles, reflection, refraction and transmission occur ...
Two primary colors can be adjusted to form a secondary color, and the secondary color and the primary color that does not participate are complementary colors to each other. For example, yellow and blue are combined to form green, and red, which is not involved, is the complementary color of gree...
Both dispersants and lubricants are commonly used additives in plastic color matching. If these additives are added to the raw materials of the product, they need to be added to the resin raw materials in the same proportion in the color matching proofing, so as to avoid color difference in the s...
