stratifier bedeutet auf Englisch

laminate [laminated, laminating, laminates]▼◼◼◼(To assemble from thin sheets)
verb
[UK: ˈlæ.mɪ.neɪt] [US: ˈlæ.mə.nət]

stratify [stratified, stratifying, stratifies]▼◼◼◼(to become separated out into distinct layers)
verb
[UK: ˈstræ.tɪ.faɪ] [US: ˈstræ.tə.ˌfaɪ]