Filter capsule permeation resistance waterborne coating for tipping paper and preparation method thereof

Abstract

The invention relates to a filter capsule permeation resistance waterborne coating for tipping paper and a preparation method thereof. The coating is prepared from the following raw materials in partsby weight: 15 to 50 parts of waterborne polyacrylic acid, 3 to 15 parts of organic silicon modified polyurethane, 3 to 15 parts of waterborne fluorine-containing resin, 3 to 15 parts of waterborne wax emulsion, 0.05 to 0.8 part of carbodiimide, 0.01 to 0.3 part of moistening agent, 0.01 to 0.1 part of defoaming agent, 15 to 40 parts of solvent, and 5 to 20 parts of cosolvent. The filter capsule permeation resistance waterborne coating has the beneficial effects that: 1) the breathable added value is less than or equal to 30s, the influence on the breathability of a filter tip is low, and thecigarette smoking feel is not influenced; 2) the back side of the tipping paper has excellent permeation resistance after being coated, liquid in a capsule filter is prevented from permeating within 10 minutes, and the time interval of smoking one cigarette is ensured; 3) the production process is simple, only a gravure coating machine is required to direct coat the back side of the tipping paper;4) extremely low VOC (Volatile Organic Compound) residue is realized, and relevant requirement on cigarette filter tip can be met completely.

Description

technical field [0001] The invention relates to the technical field of water-based coatings, in particular to an explosion-proof bead-penetrating water-based coating for tipping paper and a preparation method thereof. Background technique [0002] The tipping paper used to package cigarette filters is in direct contact with smokers' mouths, and the coating used must meet food hygiene requirements. In view of the high VOC residue of oil-based coatings, water-based coatings are widely used. The process is: first apply the water-based transfer coating to the PET or OPP film, then use the adhesive to bond the transfer coating to the base paper, and finally peel off the PET or OPP film, and then print on the surface of the water-based transfer coating . The filter tip of some high-end cigarettes contains explosive beads, and the smoker squeezes it when smoking, and the flavored liquid is released, which will increase the taste and taste of the cigarette when smoking. At this t...

AI Technical Summary

Problems solved by technology

Another example is the Chinese invention patent publication number CN201710554015 "a tipping paper to prevent liquid leakage". Although it can effectively block the penetration of liquid, the process is relatively complicated. Moreover, the surface of the tipping paper still needs to be coated, and processes such as punching are also required

In the technical field of cigarette filters, there are many similar anti-seepage technologies, but none of them can take into account air permeability, anti-seepage, VOC, and process complexity at the same time.

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