A hollow paper tube, its preparation method and application as a hollow cooling segment in a heated cigarette filter

By incorporating inorganic fibers into the base paper of hollow paper tubes and performing surface treatment, combined with calcium carbonate and adhesives, the stiffness and resilience of the paper tubes are improved, solving the deformation problem of hollow paper tubes during the composite and winding process, ensuring the appearance quality of cigarettes and reducing costs.

CN119041235BActive Publication Date: 2026-06-09CHINA TOBACCO HUNAN IND CORP
View PDF 3 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA TOBACCO HUNAN IND CORP
Filing Date
2024-09-26
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

The existing hollow paper tubes have insufficient stiffness and poor resilience, making them prone to irreversible deformation and wrinkling during lamination with cellulose acetate filter sections or cigarette rolling, which affects the appearance quality of the cigarettes.

Method used

Inorganic fibers, such as basalt fibers or glass fibers, are incorporated into the base paper of hollow paper tubes. The surface of the inorganic fibers is roughened by treatment with sodium hydroxide solution to enhance their bonding force with organic fibers. Combined with calcium carbonate, inorganic adhesives and retention aids, the paper tubes are formed through papermaking and drying, resulting in hollow paper tubes with high stiffness and high resilience.

Benefits of technology

This method ensures that the hollow paper tube does not undergo irreversible deformation or wrinkling during the bonding process with the cellulose acetate filter section or the cigarette rolling process, thus guaranteeing the appearance quality of the cigarette. At the same time, the preparation method is simple and low-cost, making it suitable for industrial production.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure BDA0005061712350000051
    Figure BDA0005061712350000051
  • Figure BDA0005061712350000061
    Figure BDA0005061712350000061
Patent Text Reader

Abstract

The application discloses a hollow paper tube and a preparation method and application of the hollow paper tube as a hollow cooling section of a heating cigarette filter, and belongs to the technical field of novel cigarettes. Inorganic fibers and plant fibers are mixed and beaten to obtain mixed fiber pulp, the mixed fiber pulp is treated by soaking in a sodium hydroxide solution, calcium carbonate, an inorganic adhesive and a retention aid are added and stirred uniformly, and then, screen forming, drying and slitting are sequentially performed to obtain raw paper, and the raw paper is spirally formed and rolled into a hollow paper tube. The hollow paper tube can guarantee the flexibility of paper, has good stiffness and resilience, effectively solves the problem that the paper tube is easily deformed irreversibly when being pressed during compounding with a cellulose acetate filter section, and greatly reduces the loss rate of the hollow paper tube during the compounding process.
Need to check novelty before this filing date? Find Prior Art