Ipleyiti yesandwich yoboya belitye yimveliso yoboya belitye eyenzelwe ngokukodwa iipaneli zesangweji zesinyithi.Ineenzuzo zolawulo oluchanekileyo lobungakanani bejometri, ukuqina okuhle kwefayibha, amandla acinezelayo aphezulu, ukumelana nokucheba kunye namandla okusika anamandla.Ngokubanzi, inokwenziwa ngokwezifiso ngokweemfuno zabathengi.Iiphaneli zeesangweji zoboya belitye zinezona zixhathiso ziphezulu zomlilo phakathi koluhlu lwepaneli yesandwich.
1. Ukumelana nomlilo okugqwesileyo
I-2, ukufudumala okulungileyo
3.Isandi sokufunxa isandi kunye nesiphumo sokugquma ubushushu siyaphawuleka