Plastic bags or plastic bags are plastic bags that are durable, flexible, thin, light and handy. Today, it is used a lot to pack food, detergent, ice water, chemical preparations or small waste, waste ... Hope this article helps you read clearly. What is the chemical composition, nature, harm and use of plastic bags to minimize its harmful effects on health and the environment?
1. What is the plastic bag made from, what is its characteristics?
Plastic bags are made from a variety of materials but are mainly made from polyethylene resin (PE) and polypropylene (PP) resins, along with some other additives. Polyethylene resins used in polyethylene bags are usually of two types: Low Density Polyethylene (LDPE) and High Density Polyethylene (HDPE). Plastic bags have good mechanical properties, transparency, smooth surface, waterproof but poor gas permeability.
HDPE is often used to produce a plastic bag with a degree of transparency, surface gloss medium level, low flexibility, certain hardness, to fold, creating a clear sound when rubbing ( So often called foam bags). Common HDPE foam bags are garbage bags, plastic bags for supermarkets, supermarket bags and small shops. Plastic bag making LDPE film is clear, smooth surface, gloss than HDPE foam bags. Thanks to its toughness and smoothness, bag production costs are higher than HDPE bags, but the quality of plastic bags is better. Common LDPE bags are large size PE bags, used to store goods with relative weight, usually print advertising products, print logos, and introduce to businesses.
Plastic bags made of PP plastic have higher mechanical strength, quite hard, so not flexible, difficult to stretch along as HDPE or LDPE. Especially, the PP bag is finer, glossier surface, better mechanical strength. In addition, PP material is waterproof, water permeable, so often used as food bags, preserved goods, or film wrapping pallet wrapped food - goods.
2. In the life of living and production today, people increasingly use plastic bags, how does that affect our health and living environment?
When manufacturing plastic bags, people must use additives such as colorants, heavy metals (lead, cadmium, ..), plasticizers, .... are all dangerous to health. Of man. At 70-80oC temperature, toxic additives contained in plastic bags will dissolve into food. In particular, some plasticizers may damage and distal peripheral nerves and spinal cord; Toxic to the testicles and to cause birth defects if frequent contact with them.
If plastic bags are used for acidic foods such as salt pickles, salted coffees, hot foods, plasticizers in plastic bags are removed from the plastic and toxic to the food. When laced with pickles, lactic acid is found in melon, which dissolves some of the metals that can cause cancer.
In addition, plastic bags produced from PE and PP are very difficult to decompose under normal burial conditions (about hundreds of years to fully decompose), the use of plastic bags will photos. bad to the human environment. The existence of plastic bags in the environment will cause serious damage to the soil and water by encasing the soil bags, which will prevent oxygen from passing through the soil, causing soil erosion, making the soil less fertile, less porous nourish, thereby slowing down plant growth. Plastic bags trapped in sewers, canals and clogs cause waste water accumulation and flooding. Sewage stagnant sites will be the source of many pathogenic bacteria. In addition, waste from plastic bags is aesthetically pleasing to the landscape.
3. How to dispose of plastic bags properly? If the destruction of the wrong way, then the consequences?
Consumers need to classify garbage as plastic bags immediately after use for environmental gathering and destruction or reproduction by environmental companies to ensure environmental safety. Do not arbitrarily bury it because it will pollute the land and water sources, nor burn it, because when it burns it produces carbon dioxide, methane is a greenhouse gas and even produces dioxin. Agent Orange) is a toxic substance that has a significant impact on human health and the environment.
4. What advice would you give plastic bags to minimize the harm that it brings?
To minimize the impact of plastic bags users should limit the use of conventional plastic bags using reusable and biodegradable shopping bags when shopping; Do not use cheap plastic bags, colored for food, especially not used for hot food, sour taste. After the use is done, it is not allowed to burn or burial themselves, but the plastic bags must be sorted separately so that environmental companies can collect and dispose of them according to regulations.