At present, the meal box production line is basically made of polystyrene and foaming agent, and then heated foaming. Polystyrene is a kind of widely used polymer material, which has the characteristics of low toxicity, high melting point, strong plasticity and easy production, so it has become the preferred material for making disposable fast-food box. So how to buy?

1. Look at the tightness

General meal boxes should be sealed in plastic bags, bags should not be damaged, not tightly packed meal boxes are prone to environmental pollution, health can not be guaranteed.

2. Look at the package

To carefully check whether the packaging mark marked "product name, producer factory name, factory address, product implementation standard, production date, shelf life, health license" and other national provisions must mark the content, if the mark content is not complete or not standard, such meal box had better not buy.

3. The box body

Good quality meal box body color should be uniform, clear outline, mouth should not have obvious depression, wrinkle.

4. See the jar

Note that the mouth of the box is flat and smooth, without waste edges and burrs. The body of the cup should be clean and transparent, with uniform thickness, without impurities, bubbles, water lines and fish-eye stiffness.

5. A squeeze

To choose the box body hardness better meal box, as far as possible to choose thick box wall, stiff meal box, in the choice of meal box, available hand on both sides of the meal box gently extrusion, roughly can know the box body hardness.

Ruian Tianbang Machinery Manufacturing Co., Ltd. specializes in the production of paper lunch box machine, multi-grid (sub-grid) lunch box machine, three-dimensional box forming machine, bento box forming machine, more information, please pay attention to the official website www.tb-jx.com