Various headboards

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Release date： 2022/06/18

Detailed

Blow Molded Products

When selecting resins for blow molding, MI, density, and resin molecular weight distribution should be considered. Generally speaking, when MI is less than 2, the blow molding is better, and the wider the molecular weight distribution, the better the molding performance.

The relationship between stiffness and ESCR that varies with density, the factor that has a great influence on the stiffness of resin and the adjustment of ESCR performance is density. Stiffness and ESCR performance exhibit opposite results as the density changes. Blow-molded products are mainly used for containers, so the outer wall of the molded parts should have rigidity that can withstand a certain pressure and have ESCR performance to ensure that the contents will not leak when used for a long time in hot and cold weather.

The factor that has a greater impact on the stiffness of the resin and the adjustment of the ESCR performance is the density. Stiffness and ESCR performance exhibit opposite results as the density changes.