Isikhwama sokuvala esinezinhlangothi eziyisishiyagalombili siwuhlobo lwesikhwama sokupakisha esiyinhlanganisela, esiqanjwe ngokuma kwaso.Lolu hlobo lwesikhwama luwuhlobo olusha lwesikhwama oluye lwavela eminyakeni yamuva, futhi lungabizwa nangokuthi "isikhwama esiphansi esiphansi, isikhwama esingaphansi kwesikwele, isikhwama seziphu sezitho" njalonjalo.
Ngenxa yomqondo waso omuhle wezinhlangothi ezintathu, isikhwama esivaliwe esinezinhlangothi eziyisishiyagalombili sibukeka sisezingeni eliphezulu futhi sithandwa kakhulu ngabathengi.
Izinzuzo eziyisishiyagalombili side sealing izikhwama
1. Isikhwama sokuvala esinezinhlangothi eziyisishiyagalombili sinezakhiwo zokuphrinta eziyisishiyagalombili, ezingenza ulwazi lomkhiqizo lubonakale luphelele futhi lwanele.Ukuba nesikhala esiningi sokuchaza umkhiqizo kulungele ukuphromotha nokuthengisa umkhiqizo.
2. Njengoba iphansi lesikhwama liyisicaba futhi livuliwe, ingaphansi lesikhwama lingabhekwa njengesakhiwo esihle kakhulu sokubonisa uma isikhwama sibekwe siphansi.
3. Isigxivizo esinezinhlangothi eziyisishagalombili sima siqondile, esivumela kakhulu ukuvezwa kophawu.
4. Isikhwama se-zipper esinezinhlangothi eziyisishiyagalombili sifakwe i-zipper esetshenziswa kabusha, futhi abathengi bangaphinda bavule futhi bavale uziphu, ibhokisi elingakwazi ukuncintisana nalo.
5. Inqubo yokuhlanganisa yokupakisha eguquguqukayo inezinto eziningi kanye nezinguquko ezinkulu.Kuvame ukuhlaziya ngokuya ngokuqukethwe komswakama, ukushuba kwezinto, kanye nomphumela wensimbi.Izinzuzo nakanjani zinkulu kunebhokisi elilodwa.
6. Ukuphrinta okunemibala eminingi kungasetshenziswa, imikhiqizo mihle, futhi inomphumela oqinile wokuphromotha.
7. Ukwakheka okuhlukile, kulula kubathengi ukukubona, ukuvimbela ukwenziwa komgunyathi, futhi baneqhaza elikhulu ekukhuthazeni ukwakhiwa komkhiqizo.
8. Ukuma kuzinzile, kulungele ukuboniswa kweshalofu futhi kudonsela ukunaka kwabathengi ngokujulile.