Development of Polypropylene Tow for Cigarettes

Polypropylene tow for cigarettes is a non-toxic, odorless, high-performance, colorless and translucent thermoplastic synthetic resin tow. It has chemical resistance, heat resistance, electrical insulation, high-strength mechanical properties and good high wear-resistant processing performance, etc.

 

 

Polypropylene fiber filter rod is made of polypropylene tow (featuring low density, high mechanical strength, high elongation, low moisture regain, chemical stability, etc.) and special adhesive (to stabilize the structure, reduce fiber gaps and increase filtration The role of hardness after rod molding) is made by drying and molding, and its cost is relatively low. Therefore, it can replace cellulose diacetate tow in the production of cigarette filters.

 

 

However, its inertness makes the effect of coke reduction and harm reduction inferior to that of cellulose acetate filter rods, and due to the high strength of polypropylene tow fibers, the qualified rate of filter rods after processing is low (easy to produce shrinkage and difficult to cut fibers), The filter rod hardness is low. Because the filter material has a great influence on the aroma and taste of cigarettes, unstable draw resistance, poor degradability and does not meet environmental protection requirements, polypropylene fiber filter rods are gradually withdrawing from the Chinese market.

 

 

In 1996, the modified polypropylene tow for tobacco passed the identification of the State Tobacco Administration. It adjusted the molecular structure and molecular weight distribution of polypropylene, improved the performance of the tow, and made the tow's index closer to that of diacetate fiber tow. Since the modified polypropylene tow for cigarettes was put into the Chinese market, it was quickly accepted by cigarette factories and promoted rapidly because of its excellent performance and low price.