How to control the dwell time during making lotion pump?

　　During making lotion pump, the holding time is the most important of a process. This period of time is filled by the melt cavity 99% began to gate solidification for termination. Module of strength and toughness is decided in injection molding was to keep the pressure after the melt until component/runner set.

　　The dwell time has big relationship with the quality of lotion pump. Keep pressure also want to retain a short in advance the melt position in the screw before. This the pressure is to prevent a melt solidification contract hole, or gate location's weakness as contributing to the lack of key module strength.

　　When the melt into the cavity, run into the metal surface, melt the cooling of the steps it has been started. Due to gather formaldehyde, nylon, and gather such as carbon materials and a half of high temperature solidification crystallization, so need the cooling of the time and very little.