| Plastic products are everywhere, from food packaging to medicine bottles and medicine boxes, to medical equipment such as disposable catheters, infusion bags... Have you ever had these daily habits related to plastics: For the convenience of pictures, cook them well The traditional Chinese medicines are packed in mineral water bottles and taken to school or work; the bottles and cans that have been filled with oil, salt, sauce and vinegar at home are used as waste after use as containers for storing food or medicine; heating food and liquid medicine in a microwave oven ;Food and medicine are the items that are most frequently "close contact" with plastic packaging. They are related to health and cannot be taken carelessly. So, how much do you know about plastic that is so familiar in daily life? Where should we start to understand it? To solve the mystery, start from the bottom of the bottle and spot the triangular plastic product mark! The "identity card" of plastic products is inconspicuous regardless of these triangular signs. Their function can be very critical, which is equivalent to the "identity card" of these plastic products. Plastic products are all kinds, transparent, white, colorful, hard, soft... this is just the appearance. In fact, there are many types of plastics, which are often difficult to distinguish by their appearance. And this small angular sign contains key information such as the material and characteristics of plastic products, which is not simple. At first glance, a small triangle surrounded by arrows with an Arabic numeral in the triangle constitutes a simple plastic product logo. Circular arrow
The triangle represents a renewable cycle, so what do the Arabic numerals in it mean? Let us work together to decipher this plastic "little password".
HDPE (high-density polyethylene) is not easy to clean. It is best not to heat it directly: it is often used as a packaging bottle for plastic medicine bottles and cleaning bath products. Shampoos and shower gels in supermarkets are mostly packed in No. 2 plastic bottles. In addition, it is often used as a plastic bag for raw products. Features: Food grade non-toxic material, can withstand high temperature of 110 degrees Celsius, good hardness and chemical resistance. The disadvantage is that it is not easy to clean. Safety factor: ★★★★ Tips for use: It is not easy to clean thoroughly, and it is easy to leave detergent or breed bacteria. It is best not to use it repeatedly for a long time. Do not use it as a water cup or storage container. It can withstand high temperatures of 110 degrees Celsius, but it is best not
It must be heated directly, otherwise harmful substances will be produced. It should not be heated in a microwave oven.
LDPE (low-density polyethylene) PE cling film does not enter the microwave oven: it is common in various plastic films (such as food packaging
Composite film, food preservation film), plastic bags, plastic packaging for medical supplies, etc. Features: Food grade material, products made with it have the characteristics of tasteless, odorless, non-toxic, and matt surface. The heat resistance of plastics is not strong. Even qualified PE cling film will usually melt and decompose when the temperature exceeds 110 degrees Celsius, and produce undesirable substances. Safety factor: ★★★★ Tips for use: PE cling film is a food-grade material, and the food cling film commonly used at home is PE cling film. But be careful, PE plastic wrap can not be put into the microwave oven! When heating food, if it is wrapped with plastic wrap, the oil in the food will easily accelerate the dissolution and release of harmful substances in the plastic wrap. Therefore, before putting the food into the microwave oven for heating, the plastic wrap on the outside should be removed.
PP refers to polypropylene, its plastic. PP plastic can be used for any food packaging, such as food-specific plastic bags, plastic lunch boxes (including microwave tableware), straws, and various food packaging bottles (such as soy milk bottles, yogurt bottles, juice beverage bottles). Features: PP is a safe and non-toxic food-grade material with good heat and corrosion resistance. The melting point is as high as 167 degrees Celsius. It can be reused after careful cleaning. Safety factor: ★★★★★ Tips for use: Food containers made of PP plastic-PP are the only food containers that can be heated in a microwave oven. But you need to pay special attention, some microwave lunch boxes are made of PP before they can be put into the microwave.
In the future, when you are buying and using plastic products, you may wish to take a look at the plastic signs on the packaging, so that the health and safety of you and your family can be more protected. |
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