With the progress of science and technology, plastic bags are being paid more and more attention. In daily life, it has become a fashion to use plastic bags. But some people don’t understand the properties and uses of this material, so if you want to give it a try, check it out!
1: The history of plastic bags
The history of plastic bags dates back to the 18th century. At that time, Europeans began to use white cotton cardboard made of glass to make food containers and clothing bags. However, due to the complexity of the process, it was impossible to mass produce, and the vessels were soon phased out. In the United States, however, plastic containers are slowly being accepted as a more convenient and practical packaging material. This is side gusset coffee bags. In the early 20th century, people began to try to use various types of film to make packaging materials. Today, there are many other types of film available besides white cotton board. Rayon film, for example, is the most common type, which consists of two layers of fabric combined to effectively protect food from moisture without any adverse impact on the environment. In addition, special purpose films are being developed, such as “solvent-free” films, which make the packaging non-toxic, odorless and waterproof.
2: Characteristics of plastics
Plastic is a transparent polymer made up of many different shapes and sizes. It has good corrosion resistance, wear resistance and chemical resistance characteristics, widely used in chemical industry, food packaging, sewage treatment, cleaning and sanitation equipment and automobile parts manufacturing and other fields. 1. Plastic has excellent wear resistance. Because its surface is covered by a continuous layer of dense crystals, the material is not easy to wear, so it can be used to make highly wear-resistant parts. 2. Plastics are easy to process and form. When it is made into round or other shapes using simple tools, it can be pressed directly without a special mold. 3. Plastic has good impact strength. Plastic is more elastic than rubber and can withstand greater impact. 4. Plastic also has good sound insulation performance. Due to the stability of plastic molecular structure, no pollution to the environment, so it has a good sound insulation effect.
3: Application domain
Plastics are widely used in daily life, including food packaging, medicine packaging and industrial product packaging. Among them, food packaging is one of the most common application fields, and the pharmaceutical and health products industry has also begun to use plastic to make medicine containers and syringes. In addition, plastics are used in furniture manufacturing, transportation facilities and other industries. Nowadays, many enterprises are applying their plastic products to the agricultural production process with good results. For example, farmers save labor costs by using plastic tubs to grow vegetables or fruits. Herders use plastic wrap to protect their animals from the cold and snow. In conclusion, plastic products have many advantages, which can effectively improve the quality of agricultural products, help farmers increase production and income, and also contribute to the development of human society.
As a new type of environmental protection material, the appearance of plastic bags brings us a lot of convenience. For example, it can be used to pack food, drinks and other items; It can also be used to make various crafts, such as plates or cups.