Colour-changeable fiber anticounterfeit paper

Abstract

The invention discloses a variable color fiber fake prevention paper that contains filamentary algae material. The algae material production technique includes following steps: 1, select raw material cladophorales; 2, wash raw material, remove dirt and crop the cladophorales; 3, acid wash; dip the cladophorales fiber in thin HCl at room temperature; 4, color and bleach technique is the same as cotton fiber; 5, dehydrate and dry with dehydrator and baker or naturally dry off in the sunshine; 6, paper couching, add the material into wood pulp by 0.1 to 0.2 percent. The product is of more reliable fake prevention performance: 1, color brand tracery; 2, color variable; 3, quasi-watermark effects; 4, special micro objective properties, 5, unique tracery; 6, hard to imitate.

Description

technical field

[0001] The invention relates to an anti-counterfeiting paper, in particular to a variable-color fiber anti-counterfeiting paper. Background technique

[0002] At present, the anti-counterfeiting papers that have appeared in the market include thermal anti-counterfeiting paper, watermarked secret paper, ultra-ionic media special paper, colored fiber anti-counterfeiting paper, fluorescent fiber paper, textured paper, magnetic anti-counterfeiting paper and so on. Among them, anti-counterfeiting paper containing colored fibers is widely used because of its intuitive and clear anti-counterfeiting features, which can be distinguished by naked eyes, the production process is relatively simple, and the production cost is low, such as banknotes and brand-name cigarette packaging. But there are still several weaknesses in these existing colored fiber anti-counterfeiting papers: one is that the colored fibers added therein are made of cott...