Method for producing anti-counterfeiting card paper with windowed security thread

Abstract

The invention relates to a method for producing anti-counterfeiting card paper with a windowed security thread. The anti-counterfeiting surface paper with the windowed security thread is produced by a cylinder mould, the bottom paper is produced by a fourdrinier, and a joint between the wet bottom paper produced by the fourdrinier and the wet anti-counterfeiting surface paper with the windowed security thread, which is produced by the cylinder mould, is pressed to be dewatered by a press roll with felt; the water content in the surface paper and the bottom paper are controlled, so that hydrogen bonds between the surface paper and the bottom paper are combined to form the anti-counterfeiting card paper with the windowed security thread; and the anti-counterfeiting card paper with the windowed security thread is dried and reeled into a finished product. The surface paper and the bottom paper are made of the same pulp, which comprises the following raw materials in proportion: 65 percent of needle pulp and 35 percent of kargeleaf pulp; the degree of beating is between 45 and 48 degrees of SR; and during the combination, the water contents in the surface paper and the bottom paper are controlled to be between 62 and 63 percent. The method has the advantages of being easily processed, having low cost, avoiding lamination processing of the surface paper and the bottom paper, simplifying production flow, and improving the production efficiency. The anti-counterfeiting card paper produced by the method is applied to anti-counterfeiting garment hangtags, covers of anti-counterfeiting books and the like.

Description

technical field [0001] The invention relates to a production method of anti-counterfeit jam, in particular to a production method of anti-counterfeit jam with window safety thread. The anti-counterfeit cardboard is mainly used in anti-counterfeit clothing tags, covers of anti-counterfeit books, etc. Background technique [0002] We know that the security thread anti-counterfeiting cardboard for opening the window that is used publicly now all is formed by laminating the security thread anti-counterfeiting paper for opening the window and the cardboard. Among them, the production of anti-counterfeiting paper for window security line is generally made by copying a paper-making net, and the basis weight of the paper is low, generally 60-120g / m 2 , is not suitable for the use of high-weight anti-counterfeiting cardboard. The reason is that: the window-opening security line anti-counterfeiting paper has a low weight-weight, and the paper weight of the jammed paper is high. Durin...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies of paper warping, high production cost and low efficiency in lamination of anti-counterfeit paper with window security thread and cardboard in the prior art, the present invention provides a method that is simple to manufacture, avoids lamination processing, simplifies the production process, and improves production efficiency. High, cost-reduced, high-quality production method for anti-counterfeit jamming of window security thread

Images