The mold should have sufficient strength and rigidity to maintain appropriate performance under molding temperature and pressure.
1. It should be able to maintain the stability of its surface at or even above the curing temperature
2. Able to maintain contour stability under molding pressure, especially under high temperature and high pressure, to maintain surface stability
3. The mold has a high degree of compatibility with the vacuum bag and good air tightness. Vacuum bag construction is not prone to bridging and tearing, and is easily sealed with sealing strips