LSR Restart Production: Segregating Startup Parts Before Release
Give restart parts separate identification and release rules rather than treating them as stable production. Review parameters and part che…
Read the article →Chengxin Silicone Rubber · Engineering and application insights
Molding, Tooling & Finishing
Check trials, cavities, filling, venting, inserts, demolding, trimming and post-curing. Validate conditions for the actual compound and equipment; these notes are not factory-capability guarantees.
Browse by engineering question
Read the technical guidance, or discuss your drawings and operating conditions with us.
Submit Customization Request →
Where to Put Silicone Cavity Numbers: Traceability and Function
Make cavity marks readable while avoiding critical sealing, contact and thin-wall zones. Convenient marking must not compromise assembly.
Read the article →
Silicone Damage During Demolding: Release Path and Weak Areas
Record release order and loading points before distinguishing sticking, undercuts and weak sections. Repairs to finished parts or a blanket…
Read the article →
Same Mold Setpoint, Different Silicone Parts: Actual Surface Temperature
A controller setpoint is not the actual temperature at every mold location. For fixed-position cure or dimensional differences, review meas…
Read the article →
Silicone Post-Curing: Tray Loading and Air Circulation
Record loading, part contact and airflow along with time and temperature. Loosely placed trial specimens do not represent a fully stacked p…
Read the article →
Localized Silicone Cure Inhibition Near Inserts: Fixture Contacts
When uncured areas appear near inserts, examine fixtures, cleaners and temporary fixing materials as well as mix ratio. Defect location alo…
Read the article →
Uneven Walls Around Silicone Holes: Core Shift or Measurement?
Distinguish core-pin shift, overall distortion and measurement positioning. One outside diameter and one bore value cannot locate the thinn…
Read the article →
Gate Vestiges on Silicone Sealing Faces: Location and Trimming
Review gate locations against sealing, touch and appearance zones. A remnant acceptable on a nonworking face is not automatically acceptabl…
Read the article →
More Flash After Deepening Mold Vents: Defect Mapping First
Evaluate venting and flash together. Map short shots, trapped gas and flash by location before adjusting the parting surface or channels.
Read the article →
Updating Silicone Mold Shrinkage from Trial Data: Direction and Cavity
Validate shrinkage for the compound, process and geometry rather than copying another product's value. Link tool dimensions, measurement st…
Read the article →