Printing enterprises engaged in food packaging bags and various packaging rolls
How to see if the food packaging bag is qualified
Release time:
2023-07-19
Packaging bags, everyone knows, because everything we buy will have packaging bags to pack well, so do you know whether the quality of the packaging bags is qualified
Packaging bags, everyone knows, because everything we buy will have packaging bags to pack well, so do you know whether the quality of the packaging bags is qualified? Let's take a look at it with Shenzhen packaging bags.
1. The appearance shall not have bubbles, perforations, water lines, violent tendons, poor plasticization, fisheye stiffness and other defects that hinder the use. The deviation of specification width, length and thickness should be within the specified deviation range.
2. Physical and mechanical properties include tensile strength, elongation at break, which reflects 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.
3. Hygienic properties include evaporation residue (acetic acid, ethanol, n-hexane), potassium permanganate consumption, heavy metals, decolorization test. Evaporation residue is to reflect the possibility of food packaging bags precipitating residues and heavy metals when encountering vinegar, wine, oil and other liquids during use, residues and heavy metals will have adverse effects on human health, in addition, residues will directly affect the color, aroma, taste and other food quality.
4. The degradation performance can be divided into photodegradation type, biodegradation type and environmental degradation type according to the different degradation types of products. Degradation performance is to reflect the ability of the product to be accepted by the environment after use and disposal, if the degradation performance is good, the bag (film) will be under the joint action of light and microorganisms, self-fracture, differentiation and degradation, and finally become debris, accepted by the natural environment; If the degradability is not good, it will not be accepted by the environment, thus forming "white pollution".
Related Products
Chaozhou Chaoan Jinshi Xingxing Packing Factory
Main products
Can't find the service you're looking for? Contact us!
If you need to inquire about our products, please leave us your email and we will contact you within 24 hours.
Copyright © Chaozhou Chaoan District Jinshi Star Packing Factory Technical support by 300.cn | SEO | Business license