Blog Information

• Posted By : machine petblowing
• Posted On : Jul 30, 2020
• Views : 220
• Category : General
• Description : Save up the operation note for future reference More information about injection machine or Cap Mold please visit Injection Machine Manufacturer

Overview

• Factors to influence product are mainly as follows: (1) machine problems; (2 )mould problems; (3) material problems; (4) human factor; (5) environment factor

  (1) Machine problems

  Time: Screw advance, material cooling, mould opening time, injection speed

  Temperature: Heater, nozzle, raw material drying, heat from screw rotation

  Pressure: Ejector, insufficient injection cavity, pressure holding

  (2) Mould problems

  Time control: Injection time, cooling time

  Pressure control: Design of main sprue and other sprue, design of flow line length of melting material in die cavity, die exhaust

  Temperature control: Design of flow line length of melting material in die cavity, whether the design of cooling tube in die is even and reasonable

  (3) Material problems

  Flow property: Melt viscosity in Injection Machine molding, viscosity change under different flow particles (i.e. shear force influenced by viscosity), resin formula

  Thermal property : Thermal conductivity, the time required for the starting of the material from cooling to crystallization

  Colloidal particles: Size and shape, lubrication property

  (4) Human factor

  Human factor refers to the professional skills of operators. It’s the dependent factor on product quality.

  (5) Environment factor

  The surrounding temperature and humidity to a great extent influences the injection process. The higher quality you need about the machine, the higher requirements are needed on the surroundings.

  1. Ways to refine product defectiveness
  2. Analysis of refine product defectiveness

  An approximate injection cycle depends at first on operator’s experience. Check whether the products are good. If not, adjust the time, temperature, pressure one by one. If there’s no difference, it might be the problem of mould and material.

  2. Five principles to abide by

  (1) Set next plan; (2) Change one factor a time; (3) Adjust one factor a time; (4)Write down operation condition every time; (5) Save up the operation note for future reference More information about injection machine or Cap Mold please visit Injection Machine Manufacturer