Shanghai Daoqin Plastics Co., Ltd.

         in production certain dimensions requirements comparison important injection molding parts 时, parts dimensions 允许波动 scope/range non small, requirements has filament amount.

         in production process in, usually effect/influence injection molding parts dimensions degree main/primary factors, is injection molding parts shrinkage rate. shrinkage rate large, degree 就越差. therefore, due to PP material and POM material injection molding parts shrinkage rate very large, it injection molding parts degree usually comparison is this 原故. its it material shrinkage rate usually is very small, therefore injection molding parts dimensions degree in generally injection molding conditions lower is very high.

         its can through machine decrease small injection molding parts shrinkage rate, from to improve/increase injection molding parts dimensions degree 目. need large large increase or holding pressure time and pressure, can make injection molding parts shrinkage amount to decrease/reduce, shrinkage rate obvious decrease small, dimensions degree 自然就 can to improve/increase.

         due to injection molding machine quality made, pressure generally can 调 太 high, 否则就会 generate a large amount of 批锋. therefore, in commonly used injection molding machine upper, main/primary also is increase or holding pressure time to improve/increase injection molding parts dimensions degree 目.

         is ensure injection molding parts dimensions degree, mold degree is need ensure conditions,而 selection stability can 靠(parameters 波动不 large), pressure injection molding machine production more is important.

        现代 new development high degree injection molding machine, 实际都 is property can stability, parameters degree high high pressure injection molding machine. introduction, its injection molding parts shrinkage rate can is 0, is 说每次 injection molding parts dimensions and type dimensions long, scope/range has filament left right,精 degree can its high.