When choosing the material of a plastic bag, there are several key factors to consider:

Nature of the packaged items: First, consider the nature of the items being packaged. For example, food, pharmaceuticals, or cosmetics may need to come into contact with the inside of the plastic bag, so you need to choose food-grade or medical-grade certified materials to ensure safety and hygiene. For specialty items such as chemicals or hazardous materials, it may be necessary to select materials with corrosion-resistant properties.

Size and weight of items: The size and weight of items are also factors to consider when choosing materials. Some materials such as polyethylene (PE) and polypropylene (PP) have better load-bearing capacity and tear resistance, making them suitable for packaging heavier or larger items. Lighter items may be able to opt for thinner materials to reduce material costs and packaging weight.

Application notes