Wuhan EPS foam is a box-type packaging container made of foamed plastic (porous plastic). Plastic foam is a plastic with many tiny pores inside. Eps foam is often used in the transportation of fruits and the packaging of items. Can eps foam keep warm? How long is the holding time?
EPS foam, or EPS foam, is an excellent packaging material. For example, televisions, refrigerators, washing machines, air conditioners, electronic meters, fine instruments, glassware, ceramic products, art crafts and other products are inseparable from EPS foams. As a cushioning packaging. EPS foam is a lightweight material made of polystyrene resin as the base material, adding auxiliary materials such as foaming agent, and foaming after heating. It has the advantages of light weight, low thermal conductivity, low water absorption, water resistance, aging resistance, low temperature resistance, easy processing, low price and high quality. PS packaging products are relatively easy to take back and reuse, which is a good green packaging material.
Professionals indicate that eps foam can keep cold and keep warm. The reason why eps foam can keep heat is that the foam material itself has low heat transfer performance, and the foam contains a lot of air, and the movement of the air is severely obstructed. The air plus the micropores predicted by the foam material block the air. The "convective heat conduction" effect formed by circulation, so it can play a very good thermal insulation effect. The insulation time of eps foam depends on the thickness of the box, the amount of ice, and the amount of material to be insulated. If the volume of the ice cube and the volume of the material to be insulated are appropriate, and the thickness of the eps foam is about 3cm, it should be possible to keep it warm for one or two days.
Eps foam can keep the items fresh for a long time and prevent the food from losing its original taste during storage. However, in order to ensure the insulation effect, users should also understand the storage items:
1. The product storage place should be cool and ventilated. In order to prevent the blowing agent from escaping too quickly, adhere to a moderate rate. The storage temperature should be below 25℃, and the ventilation should be maintained frequently.
2. EPS foam contains flammable volatile foaming agent, so please prevent fire during storage.
3. EPS foam try to choose materials first, use first, and insist on freshness, in order to obtain stable operating conditions and products.
Due to the popularity of EPS foam materials in Wuhan, the demand for EPS foam and its production has grown steadily. This is because of the diversified uses of eps foam, which leads to this phenomenon.
For some non-foam production companies, especially EPS foam end users, such as furniture stores, logistics companies, seafood distributors, etc. After the foam waste is compressed and recycled, since there is no subsequent application process, these manufacturers usually sell the compressed foam blocks to local recyclers or manufacturers. It should be known that the price of foam compressed blocks is nearly twice that of foam loose material, and merchants can make profits by selling foam blocks.
Made into PS particles
Usually, only a few EPS foam manufacturers directly use the crushed foam waste directly in the production process, and most of the foam blocks processed by the foam compressor on the market are made into PS particles. Such foam particles can be used as raw materials and used to produce new foam products.
Used in the production of new foam products
PS particles can be used to produce various foam products. It is commonly used in the production of XPS insulation boards, which are widely used in building materials. At present, this recycling technology is relatively mature, has been promoted globally, and has become one of the main methods of EPS foam recycling. In addition, PS particles can also be used to produce photo frames, decorative moldings, hangers, CD boxes and more products.