Iingqayi ezitywiniweyo ezingasetyenziswanga ixesha elide azikwazi ukuvulwa.Esona sizathu siphambili sokungakwazi ukuvula iingqayi yeplastikikukuba uxinzelelo lomoya lwangaphandle luphezulu kunomoya wangaphakathi.Ukuba ufuna ukuvula isiciko, kufuneka ulungelelanise uxinzelelo lwe-atmospheric ngaphakathi nangaphandle kwetanki yokugcina.

 
1. Sebenzisa iimela ezibukhali kunye nezinto ezinjalo, vula ngobumnene ecaleni komphetho webhotile yebhotile ukuze ugcine uxinzelelo lwe-atmospheric lwangaphakathi nangaphandle, kwaye luvule;2. Sebenzisa insimbi engenasici, amacephe obhedu, izitshixo, iitawuli zephepha lokusonga ukwandisa ukukhuhlana, kwaye emva koko Pry i-cap yebhotile ecaleni komlomo webhotile ukuvumela umoya ungene kwi-can, uze uyivule;3. Sebenzisa imela ebukhali okanye into enjalo ukugqobhoza umngxuma kwisiciko ukuze ukhulule umoya, kwaye umoya ongaphakathi nangaphandle ebhotileni unokuvulwa.4. Sebenzisa ekhaya Isomisi seenwele ezishushu sitshisa ngokuphindaphindiweyo ibhotile yebhotile ukusuka kude ukuya kufuphi, kwaye ekugqibeleni unokuvula i-airtight can;5. Ngenisa i-canat ye-airtight kwi-angle ye-45-degree, emva koko ubambe i-airtight can, cofa ezantsi kwe-can, kwaye isiciko siya kuvula.Umgaqo-siseko kukunika i-jar i-impulse, ingqayi evaliweyo imisiwe, kwaye inxalenye yesivalo iya kuqhubeka ihamba ngenxa ye-inertia, kwaye isalathiso sisalathiso esisuka kwisivalo, ngoko siya kukhululeka.Ngakolunye uhlangothi, ngenxa yokuba ingqayi ivalwe ixesha elide, isiciko sengqayi esitywiniweyo kunzima ukusisusa ngenxa yamandla e-intermolecular, kwaye ukunkqonkqoza isiciko kunempembelelo yokuphula amandla e-intermolecular;6. Gxuma ingqayi evaliweyo embizeni, uze usebenzise i-80 Yitshise ngamanzi ashushu isiqingatha somzuzu (qaphela ukuba ixesha lokufudumeza akufanele libe lide kakhulu), okanye unokugalela isiciko ngamanzi ashushu imizuzu embalwa, uze utsale isiciko ngamandla ukusivula.