Plastic is not as simple as you think. Each of them is different from the others. Some of them are reusable, while others produce harmful substances after repeated use. Some are easy to recycle, while others require more complex and complicated processing during the recycling process.
Take the plastic products closest to you, maybe the lunch box you brought from home, your water bottle, your instant noodle cup. If you study it carefully, you may find a number on the back or bottom.
You may already know what it is. This number indicates the type of plastic used to make the product you are currently holding. But do you know exactly which numbers to avoid and which numbers are most likely to damage the environment?
The first one is the raw material of PET Honey Bottles
Polyethylene terephthalate (PET or PETE or polyester)
PET is also called non-wrinkle fiber. It is different from our common plastic bags in supermarkets. PET is mainly used for food and beverage packaging purposes because it has a strong ability to prevent oxygen from entering and destroying internal products. It also helps prevent the escape of carbon dioxide in carbonated beverages.
Although PET is most likely to be recycled by recycling programs, this plastic contains antimony trioxide-a substance considered carcinogen-that can cause cancer in living tissue.
The longer the liquid is placed in the PET container, the greater the possibility of antimony release. High temperatures in cars, garages and enclosed warehouses may also increase the release of harmful substances.
2-High Density Polyethylene (HDPE)
Compared with other types, HDPE has long, almost unbranched polymer chains, which makes them very dense and therefore stronger and thicker than PET. HDPE is commonly used as food bags, opaque milk, juice containers, shampoo bottles, and medicine bottles.
Not only is it recyclable, HDPE is relatively more stable than PET. It is considered a safer choice for food and beverages, although some studies have shown that it can leach additive chemicals that mimic estrogen, which can damage the body's hormonal system when exposed to ultraviolet light.
3-Polyvinyl Chloride (PVC)
PVC is commonly used in toys, blister packaging, plastic wrap, detergent bottles, loose-leaf adhesives, blood bags and medical tubes. Before the manufacturing and disposal process of PVC has been declared to cause serious health risks and environmental pollution problems, PVC or vinyl used to be the second most widely used plastic resin in the world (after polyethylene).
In terms of toxicity, PVC is considered the most dangerous plastic. Using it may leach a variety of toxic chemicals, such as bisphenol A (BPA), phthalates, lead, dioxins, mercury and cadmium.
Several of the chemicals mentioned may cause cancer; it may also cause allergic symptoms in children and disrupt the human hormonal system. PVS is also rarely accepted by recycling programs. This is why it is best to avoid PVC at all costs.
4-Low Density Polyethylene (LDPE)
As mentioned earlier, polyethylene is the most used plastic family in the world. This type of plastic has the simplest plastic polymer chemical structure, so it is very easy and very cheap to process.
LDPE polymers have significant chain branching, including long side chains, which make their density and crystallinity lower (ordered structure), so they are usually a thinner, more flexible form of polyethylene.
LDPE is mostly used in bags (groceries, dry cleaning, bread, frozen food bags, newspapers, garbage), plastic wrap; coating of paper milk cartons and hot and cold beverage cups; some squeezable bottles (honey, mustard), food storage containers , Container lid. It is also used for wire and cable coating.
Although some studies have shown that LDPE may also cause unhealthy hormonal effects on humans, LDPE is considered a safer plastic choice for food and beverages. Unfortunately, this plastic is difficult to recycle.
The plastics in Small Plastic Juice Bottles are not known specifically, but plastic materials that do not harm the human body are used.