The roller coating plate refers to a method of color on the surface of the aluminum and coated with PVDF coating and the coating plate processed into a certain structure through processing. Roll coating aluminum plate is of high-tech with rolling the processing technology of high performance,attached to the surface of the aluminum plate by PVDF, the adhesion is strong, and the color is very realistic so that the product life length is extended. The surface is smoothness, bright and uniform. The film thickness and coating surface of aluminum is thinner than film coated plate.Because of roller coated aluminum plate reflection is excellent,clean and not easy changed of color,the price is much higher. Rolling Coated Aluminum Ceiling Rolling Coated Aluminum Ceiling,Rolling Coated Aluminium Ceiling Tiles,Rolling Coated Aluminium Ceiling Sheet Henan Everwin Trade Co., Ltd. , https://www.ewaluminium.com
Analysis of the performance of plastic foam
Plastic foam is also called porous plastic. A resin made of resin as the main raw material with numerous micropores inside. Light weight, heat insulation, sound absorption, shockproof and corrosion resistant. It is soft and hard, and is widely used as insulation, sound insulation, packaging materials and car shells. A plastic with many tiny pores inside. It is obtained by a mechanical method (either by air or carbon dioxide while mechanical agitation) or by a chemical method (adding a foaming agent). There are two types of closed-cell type and open-hole type. The pores in the closed-cell type are isolated from each other and have a floating property; the pores in the open-hole type are connected to each other without floating. It can be made of resin such as polystyrene, polyvinyl chloride or polyurethane. It can be used as a heat insulating and sound insulating material.
A kind of polymer material formed by dispersing a large amount of gas micropores in solid plastic has the characteristics of light weight, heat insulation, sound absorption, shock absorption, etc., and has better dielectric properties than matrix resin and has wide application. Almost all kinds of plastics can be made into foam, and foam molding has become an important field in plastic processing. The structural foam developed in the 1960s is characterized by core foaming, non-foaming of the skin layer, external hard and toughness, high specific strength (strength per unit mass), low consumption, and increasingly extensive replacement of wood. Used in the construction and furniture industries.
The chemical or radiation cross-linked foaming technology of polyolefins has been successful, resulting in a significant increase in the production of foamed plastics. The foamed plastic obtained by blending, filling, reinforcing and other modified plastics has better comprehensive performance and can meet the needs of various special purposes. For example, a glass fiber reinforced polyurethane foam obtained by reaction injection molding has been used as a structural component of an airplane, a car, a computer, etc., and a foam made of polybenzimidazole filled with hollow glass beads is light and resistant to high temperatures. , has been used in spacecraft.
(1) The weight is very low, which can reduce the weight of the package and reduce the transportation cost;
(2) It has excellent impact and vibration energy absorption, which can greatly reduce the damage of the product by buffering the shockproof packaging;
(3) It has strong adaptability to changes in temperature and humidity and can meet the requirements of general packaging conditions;
(4) Low water absorption, low hygroscopicity, good chemical stability, no corrosion to the contents, and strong resistance to chemicals such as acid and alkali;
(5) Low thermal conductivity, can be used for thermal insulation packaging, such as ice cream cups, fast food containers and insulated fish boxes;
(6) The molding process is convenient, and various foam cushions, foam blocks, sheets, and the like can be formed by molding methods such as molding, extrusion, and injection. It is easy to carry out secondary molding processing, for example, foam sheets can be made into various fast food containers by thermoforming. In addition, the foam block can be bonded to another material by an adhesive or bonded to other materials to form various cushioning sheets and the like.