Blow molding products
When selecting a resin for blow molding, consider MI, density and molecular weight distribution of the resin. Generally speaking, when MI is less than 2, blow molding is better, and the wider the molecular weight distribution, the better the molding performance.
The relationship between rigidity and ESCR varies with density, and the factor that has a greater influence on the rigidity of resin and the adjustment of ESCR performance is density. As the density changes, the rigidity and ESCR performance show the opposite result. Blow molding products are mainly used in containers, so the outer wall of the molded part should have rigidity that can withstand a certain pressure, and has ESCR performance to ensure that the contents will not leak when used for a long time in hot and cold weather.
The density is the factor that has a great influence on the rigidity of resin and the adjustment of ESCR properties. As the density changes, the rigidity and ESCR performance show the opposite result.
