According to the person in charge of Beite packaging products Co., Ltd., the aluminum foil packaging bag manufacturer, most of the packaging bag manufacturers have aluminum foil packaging bag production and sales business, and aluminum foil packaging bags are widely used in many places, including food packaging industry, electronic industry, etc. So, how to judge the quality of aluminum foil bags when purchasing them?
First, look at the bag materials
When buying, you can first smell whether there is a peculiar smell. If there is a peculiar smell, it indicates that the materials used in the bag are not up to the hygienic standard, and secondly, it may affect the normal use of the bag. On the contrary, if there is no odor, we can check the transparency of the bag, whether the clarity is uniform, whether there is impurity feeling, etc. Such as yongxinhai aluminum foil roll film packaging bag, 12C organ aluminum foil composite bag and other products, the materials used are very qualified and high quality.
Second, look at the firmness of the bag
According to the technical workers of Beite, a manufacturer of aluminum foil packaging bags, the firmness of the bags can be divided into two types: firmness and hot air firmness. Bags are made of different materials, so the degree of firmness is different. The main identification method is to aim at the edge of the bag and tear it by hand. If it is difficult to tear, it means that the heat sealing is firm. Otherwise, it's not good. However, the firmness of the bags for different purposes is different. The bags made of nylon and high-pressure film are generally hard to tear by hand. They can be used to hold heavy products such as stones and large particles, while the bags made of OPP heat sealing film are easy to tear and can only hold some light products. After the bag is torn, it depends on the shape and structure of the cross-section. If the bag is heat sealed from the bag, it is easy to tear If it is torn from the sealing edge, it means that the heat sealing of the bag is very poor and easy to be broken in the production process. If it is torn from the sealing edge, it means that the heat sealing quality is good; and also depends on the composite firmness of the bag. The method is to first see if there are several layers of structure at the crack, and then use hand to see if they can be separated. If it is not easy to separate, it indicates that the composite firmness is good, otherwise it is poor. Therefore, the bag is inspected The firmness of the bag also depends on whether there are bubbles or wrinkles on the surface of the bag.
Third, look at the appearance of uniformity
It is necessary to observe the stiffness of the bag first to see whether it gives people the feeling of wrinkling. Generally, the higher the flatness, the better. However, due to different materials, for example, the bag made of nylon and high-pressure film will have wavy shape at the heat sealing part of the bag; it is also necessary to observe whether the cut edge of the bag is neat, and the tidier the better.
Fourth, look at the printing quality
When purchasing aluminum foil bag products, merchants need to check the printing quality of the bag. The higher the fidelity of the actual picture, the better. Check whether there is an obvious third color at the splicing of the two colors. If so, it means that the printing requirements are not standard. Check whether there are wire drawing, fogging, blocking, missing printing and other phenomena.
How to judge the quality of aluminum foil packaging bag and how to judge whether the product is good or not? The above content is the summary of Beite packaging products technical workers.
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