ʻIke ʻia ka carbonacrylonitrile (PAN) māmā i ka maikaʻi, ma ka liʻiliʻi, i ke ʻano wela wela, ma ka ʻano o ka palapala, maikaʻi i ka adiathermancy a me ka maʻalahi i ka hana, hiki ke hoʻopakele i ka ikehu. No laila, ʻoi aku ka maikaʻi o ka hoʻokaʻawale waiū o ka waihona polyacrylonitrile i kahi vacuum a i ʻole he anuanu, inā hoʻokō, ka hana ʻana o ka waihona polyacrylonitrile i lalo o ke kūlana kiʻekiʻe, a ʻo ia ka maikaʻi loa o ka ʻāpala hoʻoluʻu wela no ka Pahu Vacuum.