1. What is the material of the plastic tableware Pla […]
1. What is the material of the plastic tableware
Plastic tableware At present, the commonly used plastic tableware is basically made of polyethylene and polypropylene as raw materials. This is a non-toxic plastic approved by the health authorities of most countries. Sugar boxes, tea trays, rice bowls, cold water bottles, milk bottles, etc. on the market are all such plastics. But polyvinyl chloride, which has a molecular structure similar to polyethylene, is a dangerous molecule. A rare hepatic hemangioma has been found almost related to people who are often exposed to polyvinyl chloride. Therefore, when using plastic products, you must pay attention to the raw materials? When there is no product manual, you can use the following methods to identify: plastic products that feel smooth to the touch, flammable in fire, and smell of yellow flame and paraffin when burned , Is non-toxic polyethylene or polypropylene.
2. How to choose plastic tableware
look at the appearance
One is to look at the basic product information, including manufacturer, address, contact information, conformity label, certification standards, etc. The second is to look at the permeability of the product's appearance, mainly looking at the light. If the product has uneven appearance and gray-black particles, it is best not to buy it. The third is to look at the color, preferably white, because colored plastics have additives and chemical elements that may cause harm to the body. For example, colored plastic bottles are added with color masterbatch, which is put together with oil, vinegar, and drinks. People eat bad for their health.
Qualified plastic products have no pungent odor, while unqualified plastic products have an unpleasant odor. Before buying, it is best to open the lid and smell it. If there is an uncomfortable smell, do not buy it. In addition, plastic products can also produce substances harmful to the human body if they are left for a long time, and they can also smell bad. For your own health, you must be careful when choosing products and never pick up and leave.
Touch the texture
Qualified plastic products have a smooth surface, no discoloration, and elasticity. When buying, you can twist it gently with your hands. Be careful not to use excessive force to avoid damage. If the people in the mall do not allow the product to be twisted, test it after buying it home.
3. Which plastic tableware cannot be used
Not all plastics are suitable for tableware. Plastic meals made of polyvinyl chloride are poisonous and endanger human health. Plastic tableware made of raw materials such as polyethylene, polypropylene and melamine are safe. Melamine plastic is a kind of thermosetting plastic. It is made of melamine formaldehyde resin as the main raw material, added with appropriate amount of pulp, cellulose filler and colorant and other auxiliary materials. It is acid and alkali resistant. Now it is mostly used in the market to make children's tableware, also known as Imitation porcelain tableware. Qualified melamine tableware is safer. As long as it is used correctly, there is no need to worry too much about its harm. However, if the raw material resin is not polymerized well, it is easy for melamine to be incorporated into food. In addition, melamine may decompose to produce cyanide at high temperatures, and may produce harmful substances when heated or placed in a microwave oven.
Therefore, even if you use qualified melamine tableware, do not store acidic, oily, or alkaline food for a long time, let alone store high-temperature food or place oily food in the melamine tableware and heat it in a microwave oven.