真(zhen)空(kong)(kong)包(bao)(bao)裝機按照抽(chou)(chou)氣方式不(bu)同(tong)會有內抽(chou)(chou)式和外抽(chou)(chou)式兩種類型，它們都是由真(zhen)空(kong)(kong)系統、抽(chou)(chou)充氣密(mi)封系統、熱壓封合系統、電器控制系統等組成。其中內抽(chou)(chou)式包(bao)(bao)裝機是有真(zhen)空(kong)(kong)室的，物品可(ke)以擺放在真(zhen)空(kong)(kong)室里，合上真(zhen)空(kong)(kong)機的真(zhen)空(kong)(kong)室上蓋(gai)后，就形(xing)成密(mi)閉的空(kong)(kong)間，這樣就可(ke)以進行(xing)抽(chou)(chou)真(zhen)空(kong)(kong)工(gong)作(zuo)了(le)，但是在工(gong)作(zuo)過程(cheng)中，有時會出現(xian)真(zhen)空(kong)(kong)蓋(gai)合不(bu)上的情況(kuang)