Aluminum alloy instrument box is made of aluminum alloy material as the skeleton, ABS, density board, splint and other panels, with three, mouth, hand, lock and other accessories combination of the box, because of its design structure is reasonable, meticulous workmanship, and load-bearing capacity strong durable, beautiful and generous characteristics, in the packaging industry has a very wide range of applications.
Its internal structure is made of EVA sponge according to the shape of the meter dug grooves, wherein EVA material composition is as follows: EVA ethylene-ethyl acetate copolymer. Ethylene-vinyl acetate copolymer is referred to as EVA, and the general vinyl acetate (VA) content is 5% to 40%. Compared with polyethylene, EVA due to the introduction of vinyl acetate monomer in the molecular chain, thereby reducing the high crystallinity, improve the flexibility, impact resistance, filler phase solubility and thermal sealing performance, is widely used in foam shoes, functional shed film, packaging film, hot melt adhesive, wire and cable and toys and other fields.
In general, the performance of EVA resin is mainly determined by the content of vinyl acetate on the molecular chain. Aluminum alloy is made of pure aluminum by adding some alloying elements, such as aluminum-copper alloy, aluminum-zinc-magnesia-copper superhard aluminum alloy. Aluminum alloy has the characteristics of light weight, low cost, mechanical, and aluminum alloy is easy to process and has a high degree of heat dissipation. In particular, the vehicle engine part is particularly suitable for the use of aluminum alloy materials. As for the most used in computer cases, aluminum - copper alloys are used. Mainly consider the heat dissipation problem.