A flexible barrier layer comprising microfibrillated dialdehyde cellulose

The present invention relates to a method for manufacturing at least one fibrous barrier layer wherein the method comprises the steps of:providing a first suspension comprising microfibrillated dialdehyde cellulose，mixing the first suspension with polyvinlyalcohol (PVOH) to form a mixture，applying said mixture to a substrate to form a wet fibrous web， and drying said wet web on said substrate to form a fibrous barrier layer. The present invention also relates to a fibrous barrier layer comprising a mixture of a microfibrillated dialdehyde cellulose and PVOH.

本发明涉及一种制备至少一层纤维阻隔层（fibrous barrier layer）的方法，该方法包括以下步骤：提供包含微纤化二醛纤维素（microfibrillated dialdehyde cellulose）的第一悬浮液，将该第一悬浮液与聚乙烯醇（polyvinylalcohol, PVOH）混合以形成混合物，将所述混合物涂布至基材（substrate）上以形成湿纤维网（wet fibrous web），并在所述基材上干燥该湿纤维网以制得纤维阻隔层。本发明还涉及一种包含微纤化二醛纤维素与PVOH混合物的纤维阻隔层。