The two comparison then or pp5 is better.
Newly bought plastic cups underneath the 7: PC other categories. Common water bottles, space cups, bottles. Department stores commonly used such material cups as giveaways. It is easy to release toxic substances bisphenol A, harmful to the human body. Do not heat when using, do not direct sunlight.
The number 5 in the triangle at the bottom of the plastic bottle: PP Polypropylene
Common soy milk bottles, yogurt bottles, juice drink bottles, microwave oven lunch boxes. Melting point of up to 167 ℃, is the only plastic box can be put into the microwave oven, can be reused after careful cleaning. It is important to note that some microwaveable lunch boxes have a body made of No. 5 PP but a lid made of No. 1 PE, which cannot be put into the microwave oven together with the body because PE cannot withstand high temperatures.
PC stands for Polycarbonate. Since Polycarbonate does not belong to the material range of 1-6 above, the number marked in the middle of the triangle of the recycling symbol is 7. At the same time, in order to facilitate the sorting of recycling, the name of the material PC is marked next to the recycling symbol.
:Plastic cups are a kind of material that is used in a large number of ways, especially in the manufacture of bottles and space cups, etc. In recent years, because of the presence of Bisphenol in milk bottles, plastic cups have been used in the manufacture of milk bottles. In recent years, milk bottles have been controversial because they contain BPA. Experts point out that, theoretically, as long as in the process of making plastic cups, bisphenol A 100 percent into the plastic structure, it means that the products are completely free of bisphenol A, not to mention the release.
Only if a small amount of BPA is not converted into the plastic structure of the cup, it may be released into the food or drink. The higher the temperature, the more BPA is released and the faster it is released. Therefore, hot water should not be served in PC water bottles. It is recommended to stop using the containers if they have been dropped or broken in any way, as plastic products can easily harbor bacteria if there are tiny pits on the surface. Avoid repeated use of plastic utensils that have deteriorated.
Plastic cups are highly susceptible to harboring bacteria in addition to precipitating some chemicals when heated. Although the plastic surface seems smooth, but in fact there are many voids, easy to hide dirt. The office, the majority of people on the cup cleaning only with water, the cup can not be thoroughly cleaned and disinfected. Experts suggest that the office is best to use stainless steel cups or glass cups, every day to clean, it is best to use detergent, and rinse with hot water.
In addition, the cup by the computer, chassis and other static electricity, will adsorb more dust, bacteria, germs, will affect the health for a long time. To this end, the China Household Electric Appliances Research Institute National Household Electrical Appliances Quality Supervision and Inspection Center Comprehensive Inspection Department Director Lu Jianguo suggested that it is best to give the cup with a cover, and do not close to the computer and other electrical appliances, and usually should also keep the indoor air circulation, open the windows to ventilate the room, so that the dust goes with the wind.
Drinking cups of choice should be glass. Don't think that glass is just transparent and nice to look at, in all materials of the cup, glass is the most healthy.
Glass cups do not contain organic chemicals in the firing process, when people use glass cups to drink water or other beverages, do not have to worry about chemicals will be drinking into the belly, and the glass surface is smooth, easy to clean, bacteria and dirt is not easy to breed in the wall of the cup, so people use glass cups to drink water is the most healthy, the safest.