The current production line of stereo box forming machine is basically made of polystyrene with foaming agent and then heated to foam. Polystyrene is a kind of widely used polymer material, which has the characteristics of low toxicity, high melting point, high plasticity and easy processing. How to buy it?
1. Pay attention to the sealing of the general meal box should be sealed in a plastic bag, the packaging should not be damaged, the packaging is not tight meal box easy to be polluted by the environment, health can not be guaranteed.
2. During the inspection of the outer package, please carefully check whether the product name, manufacturer name, factory address, product execution standard, production date, shelf life, hygiene license and other required labels are marked on the packaging label. If the labeling content is incomplete or non-standard, do not buy.
3. Look at the box body quality of the box body color should be uniform, clear outline, box mouth should not sag and wrinkle.
4. The mouth of the box should be flat and smooth, without waste edges and burrs. The body of the cup should be clean, transparent, thin and even, without impurities, bubbles, water lines, fish-eye stiffness and other phenomena.
5. The meal box with higher hardness is squeezed, and the meal box with thick and stiff wall is selected as far as possible. When choosing the meal box, the two sides of the box body can be gently squeezed by hand, and the hardness of the box body can be known.
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
