Paper tube and flavor inhaler

Patent metadata

Field	Value
Publication number	US-9491970-B2
Application number	US-201214367334-A
Country	US
Kind code	B2
Filing date	Dec 20, 2012
Priority date	Dec 21, 2011
Publication date	Nov 15, 2016
Grant date	Nov 15, 2016

Abstract

A paper tube that can be used in a flavor-suctioning tool. The paper tube ( 1 ) of a single layer of a thick paper is formed into a hollow cylinder shape by rolling a rectangular thick paper ( 2 ) into a cylindrical shape thereby forming an overlapped part ( 2 wr ) where two edges overlap, and by adhering the two edges to one another at the overlapped part ( 2 wr ). The thick paper ( 2 ) has a basis weight of 100 to 300 g/m 2 , a thickness of 150 to 500 μm, and a density of 0.5 g/cm 3 or greater. The diameter of the cylinder is 5 mm to 8 mm. A plurality of grooves ( 3 ) that are parallel to an axis (CL) of the cylinder are disposed in the outer circumferential surface or the inner circumferential surface of the cylinder.

First claim

The invention claimed is:

1. A paper tube of a single layered thick paper formed into a cylindrical hollow body by curving a thick paper having a rectangular shape and gathering both side edge portions of the thick paper along a longitudinal direction, wherein:
the thick paper has a basis weight equal to 100 g/m 2 or more and equal to 300 g/m 2 or less, a thickness equal to 150 μm or more and equal to 500 μm or less, and a density equal to 0.5 g/cm 3 or more, and a diameter of the cylindrical hollow body is equal to 5 mm or more and equal to 8 mm or less,
a plurality of grooves parallel to an axis line of the cylindrical hollow body is formed on an outer surface or an inner surface of the cylindrical hollow body.

2. The paper tube according to claim 1 , wherein
an overlapped portion is formed by overlapping the side edge portions and adhering the both side edge portions.

3. The paper tube according to claim 2 , wherein
the side edge portions are adhered by an adhesive for a food-related material selected from a group of a CMC-Na, a vinyl acetate, an EVA, a pullulan and a pectin.

4. The paper tube according to claim 2 , wherein
the grooves each include a cut portion of a linear shape formed by removing a part of the thick paper in a linear manner along the axis line of the cylindrical hollow body.

5. The paper tube according to claim 4 , wherein
the grooves are arranged having equal intervals in a circumferential direction of the cylindrical hollow body.

6. The paper tube according to claim 5 , wherein
a depth of each groove is equal to 60% or more and equal to 90% or less of the thickness of the thick paper, and
an interval between each pair of grooves adjacent to each other is equal to 1 mm or more and equal to 2 mm or less.

7. The paper tube according to claim 2 , wherein
the grooves each include a recessed indentation of linear shape formed on the surface of the thick paper along the axis line of the cylindrical hollow body.

8. The paper tube according to claim 7 , wherein
the grooves are arranged having equal intervals in a circumferential direction of the cylindrical hollow body.

9. The paper tube according to claim 8 , wherein
a depth of each groove is equal to 60% or more and equal to 90% or less of the thickness of the thick paper, and
an interval between each pair of grooves adjacent to each other is equal to 1 mm or more and equal to 2 mm or less.

10. The paper tube according to claim 2 , wherein
the grooves are arranged having equal intervals in a circumferential direction of the cylindrical hollow body.

11. The paper tube according to claim 10 , wherein
a depth of each groove is equal to 60% or more and equal to 90% or less of the thickness of the thick paper, and
an interval between each pair of grooves adjacent to each other is equal to 1 mm or more and equal to 2 mm or less.

12. The paper tube according to claim 1 , wherein
the cylindrical hollow body is formed by abutting facing edge ends of the side edge portions without forming an overlapped portion and by adhering the side edge portions using a sealing member bridging the side edge portions.

13. The paper tube according to claim 12 , wherein
the grooves each include a cut portion of a linear shape formed by removing a part of the thick paper in a linear manner along the axis line of the cylindrical hollow body.

14. The paper tube according to claim 13 , wherein
the grooves are arranged having equal intervals in a circumferential direction of the cylindrical hollow body.

15. The paper tube according to claim 14 , wherein
a depth of each groove is equal to 60% or more and equal to 90% or less of the thickness of the thick paper, and
an interval between each pair of grooves adjacent to each other is equal to 1 mm or more and equal to 2 mm or less.

16. The paper tube according to claim 12 , wherein
the grooves each include a recessed indentation of linear shape formed on the surface of the thick paper along the axis line of the cylindrical hollow body.

17. The paper tube according to claim 16 , wherein
the grooves are arranged having equal intervals in a circumferential direction of the cylindrical hollow body.

18. The paper tube according to claim 17 , wherein
a depth of each groove is equal to 60% or more and equal to 90% or less of the thickness of the thick paper, and
an interval between each pair of grooves adjacent to each other is equal to 1 mm or more and equal to 2 mm or less.

19. The paper tube according to claim 12 , wherein
the grooves are arranged having equal intervals in a circumferential direction of the cylindrical hollow body.

20. The paper tube according to claim 19 , wherein
a depth of each groove is equal to 60% or more and equal to 90% or less of the thickness of the thick paper, and
an interval between each pair of grooves adjacent to each other is equal to 1 mm or more and equal to 2 mm or less.

21. The paper tube according to claim 12 , wherein
the side edge portions are adhered by an adhesive for a food-related material selected from a group of a CMC-Na, a vinyl acetate, an EVA, a pullulan and a pectin.

22. The paper tube according to claim 1 , wherein
the grooves each include a cut portion of a linear shape formed by removing a part of the thick paper in a linear manner along the axis line of the cylindrical hollow body.

23. The paper tube according to claim 22 , wherein
the grooves are arranged having equal intervals in a circumferential direction of the cylindrical hollow body.

24. The paper tube according to claim 23 , wherein
a depth of each groove is equal to 60% or more and equal to 90% or less of the thickness of the thick paper, and
an interval between each pair of grooves adjacent to each other is equal to 1 mm or more and equal to 2 mm or less.

25. The paper tube according to claim 1 , wherein
the grooves each include a recessed indentation of linear shape formed on the surface of the thick paper along the axis line of the cylindrical hollow body.

26. The paper tube according to claim 25 , wherein
the grooves are arranged having equal intervals in a circumferential direction of the cylindrical hollow body.

27. The paper tube according to claim 26 , wherein
a depth of each groove is equal to 60% or more and equal to 90% or less of the thickness of the thick paper, and
an interval between each pair of grooves adjacent to each other is equal to 1 mm or more and equal to 2 mm or less.

28. The paper tube according to claim 1 , wherein
the grooves are arranged having equal intervals in a circumferential direction of the cylindrical hollow body.

29. The paper tube according to claim 28 , wherein
a depth of each groove is equal to 60% or more and equal to 90% or less of the thickness of the thick paper, and
an interval between each pair of grooves adjacent to each other is equal to 1 mm or more and equal to 2 mm or less.

30. The paper tube according to claim 1 , wherein
the thick paper is made by a paper making process without using a binder.

31. A flavor inhaler comprising:
the paper tube according to claim 1 ,
a heat source held at a one end of the paper tube, and
a flavor generating source arranged in the paper tube, which generates a flavor using heat generated from the heat source.

Assignees

• Japan Tobacco Inc

Inventors

• Shinozaki Yasuhiro
• Azegami Yosuke
• Akiyama Takeshi
• Yamada Manabu
• Hasegawa Takashi
• Tarora Masafumi

Classifications

• A24D1/002 Primary

  with additives, e.g. for flavouring · CPC title

• A24F13/02

  Cigar or cigarette holders (mouthpieces A24F7/00; producing tubular cigar or cigarette holders from plastics or from substances in a plastic state B29D23/14) · CPC title

• A24D1/02

  with special covers · CPC title

• A24C5/46

  Making paper tubes for cigarettes (making paper tubes in general B31C) · CPC title

• B31F1/08

  Creasing (corrugating B31F1/20; zig-zag folding B65H45/20 {; combined with folding B31F1/0012, B31F1/0022; grooving by cutting B26D3/06, B26D3/08; by milling grooves B23C3/30; of plastics material B29C53/06}) · CPC title