Preparation tools/materials: plastic bags, clips, lighters, stickers, scissors.
1. First, cut two pieces of plastic, and then clamp the edges with clips.
2. Sweep it with a lighter and seal both sides.
3. Then fold the two sides in half and seal the bottom and top again.
4. Cut off the handle with scissors and stick a sticker on it, and it's finished.
Plastic bag is a kind of thin film bag made of plastic, which is used to package, store or transport various articles. The inventor of plastic bag is Austrian scientist Max Schuschny, who applied for a patent for plastic bag on1October 24th with the patent number of 1902. Shushne was inspired by a material called celluloid, which was an early plastic invented by British john wesley Hayet in 1862.
Plastic bags were originally used to package food and medicine, because they have the advantages of moisture-proof, dust-proof, insect-proof and bacteria-proof. With the development of industrialization and urbanization, plastic bags have gradually become an indispensable part of people's daily life. Used in shopping, garbage disposal, agriculture, construction and other fields. There are more and more kinds of plastic bags.
The correct use of plastic bags is as follows:
1. Pack cooked food in plastic bags as little as possible.
After the cooked food is packed in plastic bags, the food often goes bad, and it is easy to vomit after eating, and there are symptoms of food poisoning such as diarrhea. In addition, plastic bags themselves also release harmful substances. If it accumulates in a sealed environment for a long time, the concentration will increase with time, thus polluting the food in the bag and affecting human health, especially the healthy development of children.
2. Don't use ultra-thin plastic bags.
Ultra-thin plastic bags are light in weight and thin in thickness, but have strong bearing capacity. Because plastic bag manufacturers add plasticizers in the production process, which is very harmful to human health, laws and regulations also prohibit manufacturers from producing and selling ultra-thin plastic bags.
3. Alcohol food can't use plastic bags.
Alcoholic food oily food will dissolve lead in PVC plastic bags into food, and food with a temperature exceeding 50 degrees cannot be loaded. In addition, ordinary plastic bags can't heat food in the microwave oven. Plastic bags are easy to produce carcinogens when heated, which is very harmful to human health. Consumers should use a special microwave oven to heat the plastic film for heating.
Consumers should use special food packaging bags, especially dark plastic bags, which may be reprocessed from recycled plastics and should be resolutely avoided for food packaging.