Foam packaging manufacturerSix tips for cleaning foam packing box: clean and convenient

1. As the foam packaging box is easy to be contaminated by mud, oil and other pollutants, it should be placed in a clean place as far as possible during use. If necessary, you can place a plastic bag outside the product.

2. For products that have been contaminated, please wipe them with a damp cloth and then use cleaning agents and laundry detergent. Multiple wipes can reduce the degree of contamination.

3. If the pollutants are too heavy, you can use a soft brush (such as a shoe brush), but do not use a wire brush to avoid damaging the foam packaging box.

If you cannot see sunlight for a long time on rainy days, you can soak it in rice water

5. Use a kitchen sink or washbasin to put it in a neutral detergent, or use bleach diluted with water to immerse the product in water.

6. The foam packing box has been placed for a long time, leaving only a little food flavor. In this case, please dry in the sun after cleaning.

Explain why foam packaging is hollow and collapsing

One reason: the rate of gel and foaming reaction is unbalanced. As we all know, the foaming process is indispensable in the production of foam boxes. In the later stage of foaming, the viscosity of the bubble membrane wall is relatively high, and its elasticity is also very poor. When the gas in the bubble continues to increase, it cannot withstand the stretching of the membrane wall, so the bubble will rupture, the gas will overflow, and an opening phenomenon will be formed. When this phenomenon occurs in large quantities, the foam membrane wall will break and further extend, which will lead to the collapse of the entire foam. If the rupture and diffusion of the parts stop, the foam will also be partially hollow or burst. In order to improve this situation, it is necessary to increase the amount of gel catalyst in raw materials or reduce the amount of foaming catalyst to reduce or improve the phenomenon of hollow or collapsed foam.

The second reason is that the amount of foam stabilizer is low. Stabilizer is one of the essential raw materials in the polyurethane foaming process. Throughout the process, it played a role in reducing the surface tension of each raw material component. It can stabilize the foaming process and make the foam pores finer and more uniform. When the system is in the low viscosity stage, the pore wall film will grow to a thickness suitable for the opening, thereby creating conditions for the opening. If the amount of stabilizer is small, the stability of foam pores will become worse, and premature opening will lead to collapse or partial hollowness. An appropriate amount of stabilizer is mainly used to coordinate the opening time, but the opening must be done when the foam reaction and gel reaction are basically completed and balanced, otherwise centralized control or collapse will occur.