How to distinguish the quality of aluminum foil bags is explained in detail. We will see aluminum foil bags of various shapes in our daily life, and batch aluminum foil bags are usually used in industrial production. Do you know how to distinguish the quality of aluminum foil bags when you purchase?
How to distinguish the quality of aluminum foil bag
1. Printing quality of aluminum foil bag: see whether there is an obvious third color at the splicing of the two colors. The higher the realistic level of the physical drawing, the better. See whether there are wiredrawing, fogging, blocking, missing printing, etc.
2. Material of aluminum foil bag: the packing bag shall be free of peculiar smell. Bags with peculiar smell generally make people feel that they do not meet the hygienic standards, and may also affect the normal use of bags. If there is no peculiar smell, it is necessary to check the transparency, clarity and impurity of the bag.
3. Firmness level of aluminum foil bag: the firmness of the bag is mainly divided into two types, compliance firmness and hot air firmness. Wuxi aluminum foil bags have different firmness levels due to different materials.
The main distinguishing method is to aim at the edge of the bag and tear it by hand.
The bags made of nylon and high-pressure film are generally difficult to tear by hand, and can be used to load heavier products such as stones and large particles, while the bags made of OPP heat sealing film are easy to tear, and can only load some light products; After the bag is torn, it depends on the shape and structure of the section.
If it is torn evenly from the middle of the heat seal of the bag, it indicates that the heat seal of the bag is very poor, and it is easy to break the bag in the production process; If it is torn from the edge seal, it indicates that the heat seal quality is good; It also depends on the composite firmness of the bag.
The method is to first see how many layers of structure there are at the crack, and then see if it can be separated by hand.
If it is not easy to separate, it indicates that the composite firmness is good, otherwise it is poor; In addition, check the firmness of the bag, and also see whether there are bubbles or wrinkles on the surface of the bag.
Appearance uniformity: first observe the stiffness of the bag. Generally, the higher the flatness, the better, except for the different needs of materials. For example, for a bag made of nylon and high-pressure membrane, the heat seal of the bag will be wavy; It is also necessary to observe whether the cutting edge of the bag is neat. The more neat, the better.
Analysis of environmental protection performance of aluminum foil bag
In the production process of aluminum foil bag, many customers will make specific requirements for the green, environmental protection, pollution-free and other characteristics of aluminum foil bag.
Especially for aluminum foil bags used in food packaging, the requirements for their environmental protection performance are more strict.
So how to realize the four modernizations and environmental protection of aluminum foil bags? Today, I’d like to introduce the following to you:
First of all, the purchase of raw materials for aluminum foil bags requires green environmental protection.
In terms of raw material ordering, do not waste, do not recycle materials and garbage materials, which is the fundamental to ensure the environmental protection and safety of aluminum foil bags.
In this regard, if you order a batch of aluminum foil bags with aluminum foil bag manufacturers, you can ask their companies to provide you with relevant material safety certification of aluminum foil materials.
Secondly, the environmental protection in the production of aluminum foil bags requires dust-free production in the factory, and environmental protection and pollution-free processing are required in the process of printing and compounding.
Thirdly, in the quality inspection process of aluminum foil bag, the manufacturer needs to strictly follow the production standards to ensure the environmental protection performance of aluminum foil bag.
Then, in the process of packaging products with aluminum foil bags, customers also need to pay attention to their cleanliness and hygiene in the packaging process.
The aluminum foil bag is non-toxic and tasteless, and meets the hygienic standards for food and drug packaging.
While increasing its scope of application, it also further requires us to improve the environmental protection performance of aluminum foil bag itself.