A method for producing a laminate, and a laminate

A method for producing a laminate (8) comprising a paper substrate and a microfibrillated cellulose (MFC) layer, wherein the method comprises the steps of:

• providing an MFC suspension comprising between 50 weight-% to 100 weight-% MFC based on a total dry weight and a suspension medium;
• forming a wet MFC layer by casting said MFC suspension on a casting surface of a metal belt support, wherein said formed wet MFC layer has a dry content of 1-40 weight-%, and wherein said wet MFC layer is formed of an amount of said MFC suspension corresponding to a dry grammage of 8-70 g/m2;
• providing a paper substrate web, wherein said paper substrate of said paper substrate web has a Gurley Hill air permeability value of less than 10,000 s/100 ml, as measured according to standard ISO 5636-5:2013;
• joining said paper substrate web with said wet MFC layer positioned on said casting surface of said metal belt support to form a laminate structure positioned on said casting surface of said metal belt support, wherein said wet MFC layer has a dry content of 1-40 weight-%, and said paper substrate web has a dry content of at least 70 weight-%, when said paper substrate web is joined with said wet MFC layer;
• subjecting said laminate structure to water removal to form said laminate comprising said paper substrate and said MFC layer, wherein said formed laminate has an average dry content of at least 80 weight-%, wherein said laminate structure is positioned on said casting surface of said metal belt support during the water removal, wherein the water removal comprises at least one drying step which comprises subjecting said laminate structure to drying by at least one non-contact drying device arranged on a side of the laminate structure opposite the metal belt support and wherein said metal belt support is heated during said at least one drying step, and
• separating said laminate from said metal belt support.