Abstract: The invention relates to a method for preparing an anti-counterfeiting modal fiber, including: mixing a pulp stock solution with a cellulose catalyst, alkalizing, aging, sulfonating, and then dissolving the pulp stock solution in an alkaline solution to obtain a treatment solution; mixing the treatment solution with multiple amino acid-metal chelates, filtering, defoaming and ripening to obtain a spinning stock solution; and mixing the spinning stock solution with a spinning bath additive, and wet spinning, followed by drafting, defoaming, desulfurizing, water washing, and other post-treatments, to obtain an anti-counterfeiting modal fiber, wherein the amino acid metal-chelates account for 0.5%-1.5% by weight of the spinning stock solution. Amino acid-metal chelates are used to anti-counterfeit and encrypt the modal fibers, and the anti-counterfeiting and encrypting is involved in the spinning stock solution of modal fibers.

Abstract: The invention relates to a method for preparing an anti-counterfeiting modal fiber, including: mixing a pulp stock solution with a cellulose catalyst, alkalizing, aging, sulfonating, and then dissolving the pulp stock solution in an alkaline solution to obtain a treatment solution; mixing the treatment solution with multiple amino acid-metal chelates, filtering, defoaming and ripening to obtain a spinning stock solution; and mixing the spinning stock solution with a spinning bath additive, and wet spinning, followed by drafting, defoaming, desulfurizing, water washing, and other post-treatments, to obtain an anti-counterfeiting modal fiber, wherein the amino acid metal-chelates account for 0.5%-1.5% by weight of the spinning stock solution. Amino acid-metal chelates are used to anti-counterfeit and encrypt the modal fibers, and the anti-counterfeiting and encrypting is involved in the spinning stock solution of modal fibers.