Vacuum-cleaner bags

Improvements in vacuum-cleaner bags of the type which comprise a textile bag element which is permeable to air but not to dust, with a mouth in which the fixed portion of the vacuum-cleaner can be coupled by means of an adhesive connection, the improvements being characterized by the arrangement of an element in the form of a flexible and adaptable flat disk fixed permanently in the mouth of the bag, the element having a hook-and-loop fastening element on its outer face, a second element also being provided in the form of a flat disk which is of similar shape to the first, is provided with a complementary hook-and-loop fastening element on its opposite face, and can be fitted removably on the disk fixed in the bag, the second element in turn having, on its outer face, an adhesive region to which a removable protective disk is applied, the bag also having, at its opposite end, a slide fastening permitting easy fitting, removal, emptying and washing thereof.