How to judge whether the food packaging bag is qualified?

Food packaging bag has become one of the indispensable products in the market. The main reason is that they play an important role in the food industry. It can even be said that they are irreplaceable products in the short term and have become an indispensable necessity for the food industry. The quality of food packaging bag can directly affect the quality of products, it is accompanied in the whole process of food production and circulation. So how to determine whether the food packaging is qualified? Dragon packaging for you to put forward a few points for your judgment:

1. The appearance of qualified food packaging bags is free from bubbles, perforations and other defects. The deviation of width and length is within a certain range. If it exceeds or has defects, it is an unqualified bag.

2. When making food packaging bags, physical and mechanical properties include tensile strength. Elongation at break reflects the tensile capacity of the product during use. If this is not qualified, the food packaging (film) is easy to crack during use. Damage phenomenon.

3. Unqualified food packaging bags can detect heavy metals, residues and other substances that are not conducive to human health, and residues will also affect the color of food. Fragrant. Taste and other food quality, such food packaging bags often have great harm to the human body. Qualified food packaging bags often have a certain hygiene, to ensure the quality of food. Therefore, the custom food packaging bag business must be in the early stage of the factory field inspection, to ensure safety and health after the order.

4. According to the degradation type of the product, the degradation performance can be divided into photodegradation type. Biodegradable. Environmental degradable. Degradation performance reflects a product's ability to be accepted by the environment after the use of waste. If the degradation performance is good, the bag will break, differentiate and degrade under the combined action of light and microorganisms, and become acceptable fragments in the natural environment. If the degradability is not good, it will not be accepted by the environment and cause environmental pollution.