When choosing packaging bags, there are many factors that need to be considered comprehensively, and the following are some key points:

The first is the use of packaging. If it is used for food packaging, the material must meet food safety standards, like some high temperature cooking food, you need high temperature resistant and non-toxic packaging bags, such as aluminum foil composite bags can effectively block oxygen, water vapor and light, well maintain food flavor and quality; For ordinary dry food snacks, a self-supporting mouthpiece bag made of plastic may be sufficient for easy access and storage. For industrial products, the packaging bag focuses on protecting the product from damage, such as hardware parts may need thick plastic or paper hard-shell packaging bags.

The second is the barrier of packaging. Oxygen, water vapor, ultraviolet light, etc. will have an impact on the product. For example, tea is easy to oxidize and deteriorate, so high barrier packaging bags, such as aluminized packaging bags, are suitable, which can greatly reduce the transmittance of oxygen and water vapor. Cosmetics need to consider the barrier to ultraviolet light, in order to prevent some ingredients from being photodecomposed, then the dark packaging bag with light avoidance or the packaging with ultraviolet blocking agent will be better.

Then there is the strength of the packaging. It depends on the weight, shape and transportation and storage conditions of the product. Heavier items, such as rice, building materials, etc., need high strength and good toughness bags, such as woven bags can withstand greater pressure and are not easy to break. For some fragile products, such as glass products, the internal packaging bag should have a buffer structure, such as bubble bag or foam paper wrapped and then loaded into the outer packaging bag, to ensure the integrity of the product during handling and transportation.

Then there's the cost estimate. The price difference of packaging bags with different materials and processes is large. A large number of wholesale simple plastic flat pockets have low cost and are suitable for products with low packaging requirements and limited budgets; And exquisite printing, special materials or with special functions of the bags, such as vacuum bags, rust bags and other relatively high prices, according to the positioning of the product and profit margins to reasonable choice.

Finally, environmental protection. In today's increasing awareness of environmental protection, degradable packaging bags are becoming more and more popular. For example, paper bags or biodegradable plastic bags, although the cost may be slightly higher, but environmentally friendly, can enhance the social image of the enterprise, especially for those who pay attention to the concept of environmental protection brand products.