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Hollow filter stick and production method thereof

A manufacturing method and filter rod technology, which are applied in the directions of smoke oil filter element, application, tobacco, etc., can solve the problems of unsightly appearance of the end face and difficult forming, and achieve the effects of good smoke condensation effect, beautiful appearance and high production efficiency.

Active Publication Date: 2015-07-15
NANTONG CIGARETTE FILTER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The molding of this patent is relatively difficult, and the appearance of the end face is not very beautiful

Method used

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  • Hollow filter stick and production method thereof
  • Hollow filter stick and production method thereof
  • Hollow filter stick and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: as figure 1 The hollow filter rod shown is formed by wrapping the hollow filter element 2 with forming paper 1, the length is 100-120mm, the outer circumference of the cross section is 16-18mm, and the hollow filter element has an axial hole extending along the length of the filter rod inside. 5. The cross-section of the axial hole 5 is S-shaped, and the cross-sectional area of ​​the axial hole 5 accounts for 35-45% of the cross-sectional area of ​​the entire filter rod.

Embodiment 2

[0035] Embodiment 2: as Figure 5 For the hollow filter rod, the diameter 4 of the end surface of the filter rod is relatively small, the outer circumference is 16-19 mm, and the length is 60 mm. The filter element 2 has an axial hole and a plurality of radial holes 10 perpendicular to the axial direction, and the diameter of the radial holes 10 is smaller than that of the axial holes.

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Abstract

The invention provides a hollow filter stick and a composite filter stick of the hollow filter stick. The hollow filter stick is formed by wrapping forming paper on a hollow filter cartridge; an axial hole extending in the length direction of the filter stick and in multiple shapes is formed inside the hollow filter cartridge, and the inner wall of the axial hole is smooth. The preferential shape of the axial hole is a gear, wherein teeth shapes of the gear are different or teeth dimensions are not completely same, but the teeth are rotational symmetric; radial holes can be formed in the filter cartridge. The invention also provides a production method of the hollow filter stick; the production method includes the following steps of spraying glycerol triacetate which accounts for 13-30% (according to weight ratio) of dry acetate tows, and then jetting with vapor at 120-160 degrees centigrade to heat the glycerol triacetate and dry acetate tows to be condensed and shaped. The hollow filter stick can not only ensure hardness, stiffness and resistance absorption but also is low in cost as filter cartridge material consumption is little.

Description

technical field [0001] The invention relates to a filter stick for cigarettes with a hollow filter element. Background technique [0002] The filter rod is usually formed by wrapping the filter element with forming paper. The outer circumference of the ordinary filter rod is 22-25mm, and the circumference of the thin filter rod is smaller. [0003] The patent with application number 201320506371.8 provides a special hollow composite filter rod; the patent with application number 201320643679.7 provides a filter rod for cigarettes with a cavity inside. The filter rods of the above-mentioned two patents are filter rods of common thickness, and the structure of the hollow or cavity filter element is also relatively simple, and the function is relatively single. [0004] The patent with the application number CN201010245777 provides an externally buried surrounding cylindrical nozzle rod, which is composed of a tow mandrel and a molding paper wrapped in an outer layer, and lon...

Claims

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Application Information

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IPC IPC(8): A24D3/04A24D3/02
CPCA24D3/022A24D3/0229A24D3/04
Inventor 盛培秀金强孙庆杰秦昌峰王明辉黄杨周成喜
Owner NANTONG CIGARETTE FILTER
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