1. What material is the milk packaging box made of?

2. Picture of what material the milk packaging box is made of.

3. What is the packaging material of the milk carton?

4. Packaging materials for boxed milk.

1. Milk packaging boxes are made of composite materials.

2. The packaging box is a six-layer composite packaging composed of paper, aluminum, and plastic. A typical composite material is composed of the following four materials or several of them: polyethylene, a sealing layer, and a barrier The effect of moisture and bacteria. The cardboard is used to improve the hardness and strength of the box and has a light-proof effect. The aluminum foil has excellent oxygen-proof and light-proof properties and can effectively isolate the milk from the air, light and bacteria, so it can be stored at room temperature. Storage, and the shelf life is long, up to 45 days. Paper packaging bags are more cost-effective and their costs are lower.