The present disclosure relates to a spray nozzle chip (1) comprising: a first layer (7) provided with a first layer orifice (7a), a mechanically flexible nozzle layer (9) provided with a nozzle orifice (9a), the spray nozzle chip (1) having a valve functionality obtained by movement of the nozzle layer (9) relative to the first layer (7) due to pressure changes, wherein the nozzle orifice (9a) is closed when the nozzle layer (9) is in a default non-pressurised state and wherein the nozzle orifice (9a) is opened and set in fluid communication with the first layer orifice (7a) when the nozzle layer (9) is deformed due to pressure during a spraying operation, and wherein the spray nozzle chip (1； 1-1； 1-2) comprises a sealing layer (15) configured to rupture when the nozzle layer (9) is deformed due to applied pressure during a spraying operation.本發明關於一種噴霧噴嘴晶片(1)，其包含：第一層(7)，設有第一層孔(7a)；機械方面地可撓的噴嘴層(9)，設有噴嘴孔(9a)。該噴霧噴嘴晶片(1)具有閥機能，藉由該噴嘴層(9)相對於該第一層(7)因為壓力變化而運動來獲得該閥機能。其中當該噴嘴層(9)在預設之未受壓力的狀態中時，該噴嘴孔(9a)被關閉；且其中在噴霧作業期間，當該噴嘴層(9)由於壓力而變形時，該噴嘴孔(9a)被打開，且被設定成和該第一層孔(7a)流體連通。其中該噴霧噴嘴晶片(1；1-1；1-2)包含密封層(15)，其被建構成在噴霧作業期間，當該噴嘴層(9)由於施加的壓力而變形時，該密封層(15)破裂。
