Focus on food packaging
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Source
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Source
Strength
Customize
The reason why food packaging bags are popular in the market today is that it is a very important part of the food industry. It can even be said that it is indispensable in the food industry and is a necessity that people cannot do without daily life. The quality of a food packaging bag can directly affect the product, and it is accompanied throughout the whole process of food production, circulation and application. So how do you judge whether the food packaging bag is qualified?
1. The appearance of the food packaging bag must not have any problems such as bubbles, perforations, water lines, gluten, poor plasticization, and fish eye stiffness. Specifications width, length, and thickness deviation should be within the specified tolerances.
2. Physical and mechanical properties in the process of making food packaging bags include tensile strength and elongation at break. It reflects the ability of the product to withstand stretching during use. If this item is unqualified, the food packaging bag during use ( Membrane) is prone to cracking and damage.
3. Hygienic performance includes evaporation residue (acetic acid, ethanol, n-hexane), potassium permanganate consumption, heavy metals, decolorization test. The evaporation residue is a reflection of the possibility of precipitation of residues and heavy metals when the food packaging bag encounters liquids such as vinegar, wine, oil, etc. during use. Residues and heavy metals may adversely affect human health, and the residue may directly affect the color and fragrance of the food. , taste and other food quality. Therefore, enterprises that customize food packaging bags must conduct on-the-spot inspections of manufacturers to ensure that safety and hygiene can be placed.
4. Degradation performance can be classified into photodegradation type, biodegradation type and environmental degradation type depending on the type of degradation of the product. The degradation performance reflects the ability of the product to be accepted by the environment after being discarded. If the degradation performance is good, the bag (membrane) will break, differentiate and degrade under the action of light and microorganisms, and eventually become debris, which is the natural environment. Accepted; if the degradation is not good, it will not be accepted by the environment, thus forming "white pollution."
