How to solve the problem of plastic deformation of the barre

How to solve the problem of plastic deformation of the barrel?

 

    People often think that the reason deformed plastic bucket, because the sealing, and after a refillable plastic tub of liquid cargo, after the spin-tight lid, since the air tight, so when the liquid content, after cooling, the pressure becomes smaller barrel, the external pressure, internal and external pressure caused by the barrel, resulting in deformation of plastic barrels. The more plastic bucket sealed airtight, the more easily deformed, in fact, this is a conceptual error. Plastic bucket impede the inspection of clearly defined to be sealed airtight, if the liquid contents of dangerous goods, so I needed to contain dangerous goods plastic bucket to be able to withstand 30Kpa / cm pressure, and Class II, III class of dangerous goods costumes plastic bucket also required to withstand 20Kpa / cm².

    China's manufacturing plastic bucket taken machine backward, less wall thickness control point, resulting in uneven barrel body, so in the development of standard plastic bucket is relatively loose, for example, made of two symmetrical wall thickness allows 2: 1 within the scope. Such non-uniform wall thickness variations barrel plastic barrels do anatomical analysis often judged qualified. In actual use, because of the difference between the tank wall thickness of around too much and cause a large plastic bucket deformation. This has caused the attention of plastics machinery manufacturing enterprises, has begun to improve work in this area, most of the plastic bucket manufacturers in the mold device also actively made improvements.