What kind of food packaging bag is qualified

Nowadays in the food industry, food packaging bags are an indispensable part. The quality of food packaging bags directly affects product quality, so what kind of food packaging bags are qualified? Let's briefly explain.

1. The appearance should not have any defects such as bubbles, water lines, perforations, etc., and the deviation of the specification width, length, and thickness should be within the specified deviation range.

2. The physical and mechanical properties include tensile strength and elongation at break, which reflect the ability of the product to withstand stretching during use. If this item is unqualified, the food packaging bag (film) is prone to cracking and damage during use. phenomenon.

3. Sanitary performance includes evaporation residue (acetic acid, ethanol, n-hexane), potassium permanganate consumption, heavy metals, and decolorization tests. Evaporation residue reflects that residues and heavy metals precipitated when food packaging bags encounter vinegar, oil, wine and other liquids during use will have adverse effects on human health. In addition, residues will directly affect the color, aroma, and taste of food.

4. Degradability according to different degradation types of products, it can be divided into photodegradable, biodegradable, and environmentally degradable. Degradation performance reflects the ability of the product to be accepted by the environment after use and disposal. If the degradation performance is good, the bag (membrane) will break, decompose and degrade by itself under the combined action of light and microorganisms, and eventually become debris, which is a natural environment. Accepted; if the degradation performance is not good, it will not be accepted by the environment, thus forming "white pollution".