Nowadays, packaging bags can be seen everywhere in daily life, and they are the best thing to preserve food. Among them, the bag for long-term preservation of food is aluminum foil bag. How to judge the quality of an aluminum foil bag? The following is a brief introduction from four aspects
1、 The first is the material of aluminum foil bag

Take a look at the sample purchase to smell whether there is a special smell. If there is odor, then it does not meet the health standards, and may affect the normal use of aluminum foil bags. If there is no special odor, you can check whether the clarity of the aluminum foil bag is uniform and whether there is impurity.

2、 Look at the firm level of the aluminum foil bag
The firmness of the aluminum foil bag is mainly divided into two types, which are in accordance with the firmness and the hot air firmness. Due to different materials, Shanghai aluminum foil bags have different firmness levels. The main distinguishing method is to tear the edge of the bag by hand. The bag made of nylon and high-pressure film is difficult to tear by hand, and can be used to hold heavy products such as semiconductor products and large particles. However, the bag made of OPP heat sealing film is 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 evenly torn from the middle of the heat seal of the bag, it means that the heat seal of the bag is very poor and easy to be broken in the production process. If the bag is torn from the sealing edge, the heat sealing quality is good;
Secondly, the composite firmness of the packaging bag should be considered. The method is to first look at the structure of several layers at the crack, and then use your hand to see if it can be separated. If it is not easy to separate, it indicates that the composite firmness is good. If it is separated by a slight pull, it indicates that the quality is poor;
Therefore, to check the firm level of the aluminum foil bag, it is also necessary to see whether there are bubbles or wrinkles on the surface of the packaging bag.

3、 Look at the appearance uniformity of aluminum foil bag
First observe the flatness of the aluminum foil bag. Generally, the higher the flatness, the better, except for the different needs of materials. For example, for the packaging bag made of nylon and high-pressure film, the heat sealing position of the bag will be wavy; it is also necessary to observe whether the cutting edge of the packaging bag is neat, and the tidier the better. Suzhou Haoxin packaging not only produces aluminum foil bags, but also antistatic shielding bags and transparent vacuum bags.
4、 Look at the printing quality of aluminum foil bag
For the printing quality of aluminum foil bag, the higher the fidelity level, the better. Secondly, check whether the bag has wire drawing, fogging, blocking, missing printing and other phenomena. If this happens, it means that the printing requirements are not standard. Now most aluminum foil bag manufacturers are cutting corners. Remind the majority of users in the purchase of aluminum foil bags must pay attention to the above points for you to identify the quality of aluminum foil bags, judging from the materials, bag firmness, appearance uniformity, printing quality of aluminum foil bags; many people are worried about the quality of aluminum foil bags when purchasing, so you can choose the aluminum foil bags designed by Dongguan Beite packaging And free samples for your trial!
Dongguan Beite packaging materials Co., Ltd. is a large-scale company specializing in the production of food grade composite packaging. It is a professional manufacturer of composite packaging bags. It uses new equipment to produce packaging bags and roll films, providing comprehensive, environmental protection and safety packaging services for the market. The company produces composite bags, roll film, fruit bags, aluminum foil bags, suction mouth bags, self-supporting bags, zipper bags, anti-static bags, special-shaped bags, etc., which are suitable for the internal and external packaging of food, daily chemicals, electronics, toys, medicine, cosmetics, industrial products and other industries. We uphold the integrity of cooperation, good quality, good service business philosophy, won the industry's approval, products sold to all over the world; welcome friends from all walks of life to inquire, visit our factory to investigate guidance and business negotiations.