How to identify low-quality plastic packaging bags for food?

In the production of low-quality plastic packaging bags, because the materials themselves contain various auxiliary agents, dyes, heavy metals, once loaded into hot food such as steamed stuffed buns, Noodles in soup, etc. just out of the pot, with the promotion of temperature, harmful substances in the bags will migrate to food and human body, endangering health. So, how do consumers identify low-quality plastic packaging bags for food in their daily lives? How to choose food plastic packaging bags correctly? Jinde Packaging provides tips for consumers.
1. Distinguishing the quality of food packaging bags through color
Food plastic packaging bags are mostly transparent plastic bags without obvious colors. In the vegetable market, it is common to see vendors packaging fruits, vegetables, cooked food, and meat in red, black, and other colored plastic bags. In fact, most of these colored plastic packaging bags are made by adding waste and recycled materials, which do not meet food requirements.
2. Identifying the quality of food packaging bags through the eyes
Even if the plastic packaging bag is transparent, it should be placed in a well lit place to check for impurities. If you look closely at the low-quality plastic packaging bag under the light, you can see black dots on top of the plastic packaging bag, which are unevenly distributed and of different sizes, and even cracks can be seen on the low-quality plastic bag. Poor quality plastic bags are usually used to hold garbage and cannot hold food, fruits, vegetables, and meat.
3. Identifying the quality of food packaging bags through the nose
Due to the fact that low-quality plastic packaging bags are made from recycled materials, smelling the inside of the plastic packaging bags with your nose will result in a nauseating odor. These plastic bags are usually toxic and cannot be used to hold food and vegetables. Qualified plastic packaging bags have no odor.
4. Feel the quality of food packaging bags through your hands
The surface of high-quality plastic packaging bags is smooth, dense, and flat, while the surface of low-quality plastic bags is relatively rough. When touched by hand, the surface may feel uneven, sticky, and rough.
5. Judging the quality of food packaging bags by weight
Throw the plastic packaging bag into the water. If the plastic packaging bag sinks to the bottom of the water, it indicates that the plastic bag is of poor quality. If the plastic packaging bag floats on the water surface, it indicates that the quality of the plastic packaging bag is good. Plastic packaging bags made from new materials have relative strength, hardness, and toughness, and will not break easily upon tearing. During the production process of low-quality plastic packaging bags, a lot of additives and waste recycling materials need to be added. These additives and waste recycling materials not only have a strong odor, but also make the plastic packaging bags brittle and fragile. It is easy to tear the plastic bags by hand.
6. Distinguishing the quality of food packaging bags through sound
Hold the plastic packaging bag in your hand and shake it vigorously. If the plastic packaging bag makes a crisp sound, it indicates that the plastic packaging bag is of poor quality, while high-quality plastic packaging bags will make a buzzing sound when shaken.
 
Jinde Packaging reminds everyone that the national standards for plastic packaging bags include "Plastic Shopping Bags" (GB/T 21661-2020), "Retail Packaging Bags for Commodities" (BB/T 0039-2013), "Daily Plastic Bags" (GB/T 24984-2008), etc. Plastic packaging bags for food are plastic packaging bags that do not have a special odor when they leave the factory and cannot be used to contain food. Colored plastic packaging bags (currently used in dark red or black on the market) cannot be used for food plastic packaging bags. Because these types of plastic packaging bags are often made from recycled plastic waste. Starting with plastic food packaging bags for everyone's health. For knowledge about food packaging bags, please follow the Jinde Packaging website or visit our hotline for consultation. Our service hotline is 15902743510