A multilayer non-woven mat for a lead-acid battery includes a first layer of non-woven web of fibers including coarse fibers having an average fiber diameter from about 6 μm to about 25 μm and a second layer of non-woven web of fibers including microfibers having an average diameter from about 0.5 μm to about 5 μm. The multilayer non-woven mat includes a binder configured to simultaneously bind the coarse fibers in the first layer together, the microfibers in the second layer together, and at least some of the coarse fibers in the first layer to at least some of the microfibers in the second layer together. The first layer is configured to absorb an active material of an electrode of the lead acid battery, and the second layer is configured to block the active material of the electrode from passing through the non-woven glass mat.

The present invention relates to a method for producing a dye-capturing non-woven fabric, the method comprising the steps of providing a non-woven substrate and applying a composition to the non-woven substrate, the composition having binding and dye-capturing functionalities. The present invention further relates to a dye-capturing non-woven fabric obtainable by such a method and a dye-capturing non-woven fabric comprising a non-woven substrate comprising cellulose fibers and a dye-capturing agent adhering to the non-woven substrate by means of a binder and/or a dye-capturing agent being absorbed in the non-woven substrate.