Inzuzo Yomkhiqizo;
1)Umugqa wokunamathela othambile noqinile we-co-extrusion kulula ukuwufaka futhi akulula ukuwa.
2)I-cooper plunger ingakhiywa ngokuzenzakalelayo ngemva kokulungiswa, akulula ukuxegiselwa, ukuqina nomphumela wokuvala ozinzile.
3)Ikesi langaphakathi lingakhipha lonke, elilungele ukulifaka nokunakekelwa.
4)Ongakukhetha ukufakwa kubakaki noma ukufakwa okuphezulu.
5)Ukufakwa okuphezulu kulula futhi kuhlukahlukene, khipha yonke indlela yokuphakamisa ukuze uyifake, noma khipha umugqa wokuvala ukuze uwufake.
6)Indlela yokuxhuma yamabha amane yangaphakathi, ukunyakaza okuguquguqukayo, ukwakheka okuzinzile, ingcindezi eqinile yokulwa nomoya.