PET plastic cup has good physical properties, impact strength is 3 ~ 5 times that of other plastic films, and has strong folding resistance
Resistant to oil, fat, acid and alkali, resistant to most organic solvents. It has good safety performance of high and low temperature resistance, can be used for a long time in the temperature range of 120 ℃, can withstand 150 ℃ high temperature in a short time, can withstand - 70 ℃ ultra-low temperature, and has little effect on its physical properties at high and low temperature. The permeability of gas and water vapor is low, which has good properties of gas resistance, water, oil and peculiar smell. High transparency, can block UV light, good brightness. It is non-toxic, odorless, with good hygiene and safety factor, and can be directly used for food packaging.
The molecular structure of PET plastic is highly symmetrical, and it has certain crystallization orientation ability, so it has high film-forming property and forming property. Pet plastics have good optical properties and weather resistance, amorphous pet plastics have excellent optical transparency. Another pet plastic has excellent wear resistance, friction, dimensional stability and electrical insulation. The bottle made of pet has the advantages of high strength, good transparency, non toxicity, anti penetration, light product quality, high productivity and so on. The structure of PBT and PET molecular chain is similar, most of the properties are the same, but the main chain of molecular structure changes from two methylene to four, so the molecule is more flexible and the processing performance is better.
With the rapid development of the economy, disposable paper cups, as a kind of life necessities, have become an indispensable daily necessities for families, restaurants, offices and other places. Its changeable shape, bright color and the characteristic of not afraid of wrestling are loved by many people. At present, the paper cups sold in the market are generally made of single-layer paper in the structural design. Generally, the strength of the paper cups is low. After the hot water is filled, the cup body is easy to deform, and the poor heat insulation effect is not antiskid. The following editor introduces the function of the double-layer paper cup.