Ama-3-ply foam liners enziwe ngezingqimba ezintathu: umgogodla omncane wegwebu uhlanganiswe phakathi kwezingqimba ezimbili zefilimu ye-LDPE.I-3-ply foam liner ijwayele ukusetshenziswa ngokushintshana ne-foam liner.Kodwa-ke, empeleni yenza kangcono kune-foam liner evamile.Njengomugqa wegwebu, lokhu nakho akudali uphawu olungangenisi umoya.
Ayizwani nephunga elimnandi, futhi inezinga eliphansi lokudlulisa umswakama, okusho ukuthi ivimbela umswakama ukuthi ungangeni ebhodleleni futhi uthinte umkhiqizo.