The application and development history of PVC foam board flat die head in China

1. Stage of free foam board mould on imported produce line;
2. Stage of true crust foam board mould on imported produce line;
3. Stage of free foam board mould on domestic produce line;
4. Stage of false crust foam board mould;
5. Stage of crust foam board mould with pre-cooling bar;
6. Stage of crust (& free) foam board mould without choke bar.