Molding Guide

POM resin Iupital™ Molding Guide

1. 1Molding machines
   1. 1.1Molding machine selection from injection barrel capacity
   2. 1.2Molding machine selection from mold clamping pressure
   3. 1.3Nozzle structure
   4. 1.4Injection Structure
   5. 1.5About the check ring
   6. 1.6Peripherals
      1. 1.6.1Material drying
      2. 1.6.2Mold temperature control
      3. 1.6.3Local exhaust ventilation system
2. 2Molding conditions
   1. 2.1Pre-drying
   2. 2.2Resin temperature
   3. 2.3Injection pressure
   4. 2.4Injection speed
   5. 2.5Mold temperature
   6. 2.6Molding cycle
      1. 2.6.1Configuration of the molding cycle
      2. 2.6.2Injection time (filling time, holding time)
      3. 2.6.3Plasticization time
      4. 2.6.4Cooling time
      5. 2.6.5Dry cycle
   7. 2.7Starting and ending the molding operation, interrupting the operation, and replacing the material
      1. 2.7.1Material exchange
      2. 2.7.2Work interruption/disassembly and cleaning
   8. 2.8Safety precautions
3. 3Molded part quality
   1. 3.1Dimensional Accuracy (tolerance)
   2. 3.2Dimensional Stability
   3. 3.3Measures against molding defects
4. 4Thermal stability
   1. 4.1Thermal analysis
   2. 4.2Residence discoloration
   3. 4.3Regrind use characteristics
   4. 4.4Mold deposit
      1. 4.4.1Mold Deposit generation factors
      2. 4.4.2Forming conditions and the tendency of Mold Deposit to form
      3. 4.4.3Precautions for removing Mold Deposit and storing molds
5. 5Flow characteristic
   1. 5.1Flow properties of Iupital and other resins
   2. 5.2Molded part wall thickness and flow length
   3. 5.3Molding conditions and specific flow length
      1. 5.3.1Injection pressure
      2. 5.3.2Mold temperature
      3. 5.3.3Gate diameter
6. 6Shrinkage property
   1. 6.1Molding shrinkage
      1. 6.1.1Wall thickness and molding shrinkage
      2. 6.1.2Melt Index (MI) and shaping shrinkage
      3. 6.1.3Anisotropy of molding shrinkage (grade comparison)
      4. 6.1.4Molding conditions and molding shrinkage
         1. ①Injection pressure
         2. ②Injection time
         3. ③Mold temperature
         4. ④Resin temperature
   2. 6.2Dimensional change by heat shrinkage heat treatment
   3. 6.3Time course of post-shrinkage molded product dimensions