-
Product
-
Methods for Identifying the Quality of Plastic Bags Used in Daily Life
Date:Nov 29,2021
1. First, check whether the plastic bag has a "For Food Use" label on its exterior. Typically, this label should be prominently displayed on the front of the packaging. Next, examine the color—generally speaking, colored plastic bags often contain recycled materials from used plastics, making them unsuitable for food storage. For instance, black plastic bags commonly seen in vegetable markets, used to hold fish, shrimp, and other seafood or meat products, were originally intended for garbage disposal; consumers should avoid using these. Finally, inspect the bag for any impurities. Hold the plastic bag up to sunlight or artificial light and look closely for dark spots or tears. Any bag with visible impurities was almost certainly made from recycled plastic waste.
2. Smell the plastic bag to check for any unusual odors that might make you feel nauseous. A合格 plastic bag should be odorless, while不合格 ones often carry various unpleasant smells due to the additives used in their production.
4. A合格 plastic bag will produce a crisp, ringing sound when shaken, whereas an不合格 one typically makes a dull, buzzing noise.
3. Quality plastic bags have sufficient strength and won’t tear easily when pulled; in contrast, substandard bags often contain impurities that significantly weaken their structure, making them prone to tearing.
4. A合格 plastic bag will produce a crisp, ringing sound when shaken, while an不合格 one typically makes a dull, buzzing noise.
Avoid using plastic bags to carry hot or oily foods. Of course, if you’re unsure whether a plastic bag is safe, steering clear of it altogether when handling extremely hot or grease-filled items is one effective way to minimize potential risks. Unsafe plastic bags often contain harmful substances like dyes and heavy metals. Moreover, the oils found in foods such as meat, fish, and fried dough sticks actually act as solvents, which can cause toxic chemicals from the plastic bag to leach into your food. Meanwhile, high temperatures can soften the plastic, further accelerating the release of these harmful substances and increasing the risk of contamination. That’s why it’s safer to store vegetables at room temperature or freeze them instead.
Of course, the best practice is to avoid using plastic bags for food altogether whenever possible. For instance, you can bring your own basket or reusable cloth bag when shopping at the market. And if you do end up relying on plastic bags temporarily, make sure to remove the food from the bag as soon as you get home—this simple step can help reduce exposure to potentially harmful materials.
Keywords:
The previous one
The previous one
More information