ROLLING PAPER FOR ROLLING A TAPERED FILTER TIP FOR A CIGARETTE

Abstract

A rolling paper (1) for rolling a tapered filter tip (2) for a cigarette (3), said rolling paper (1) comprising a flat paper body (4) comprising an upper edge (5), a lower edge (6), a first side edge (7, 8), and a second side edge (7, 8), wherein the upper edge (5) is positioned opposite to the lower edge (6), and the first side edge (7, 8) is positioned opposite to the second side edge (7, 8), and at least one folding line extending transversely to the upper edge (5) and the lower edge (6) and located closer to the second side edge (7, 8) than the first side edge (7, 8), wherein the upper edge (5) is larger than the lower edge (6), the upper edge (5) comprises an upper curved part, the upper edge (5) transitions into the first side edge (7, 8) at an upper corner (11), the lower edge (6) comprises a lower curved part, the lower edge (6) transitions into the first side edge (7, 8) at a lower corner (13), and at least one of the lower corner (13) and the upper corner (11) is a rounded corner (14).

Claims

1.-52. (canceled)

53. A rolling paper for rolling a tapered filter tip for a cigarette, said rolling paper comprising: a flat paper body comprising an upper edge, a lower edge, a first side edge, and a second side edge, wherein the upper edge is positioned opposite to the lower edge, and the first side edge is positioned opposite to the second side edge; and at least one folding line extending transversely to the upper edge and the lower edge and located closer to the second side edge than the first side edge, wherein: the upper edge is larger than the lower edge; the upper edge comprises an upper curved part; the upper edge transitions into the first side edge at an upper corner; the lower edge comprises a lower curved part; the lower edge transitions into the first side edge at a lower corner; and at least one of the lower corner and the upper corner is a rounded corner.

54. The rolling paper according to claim 53, wherein a corner radius R of the rounded corner is at least 0.25 mm.

55. The rolling paper according to claim 53, wherein a corner radius R of the rounded corner is within a range of 0.25-6 mm.

56. The rolling paper according to claim 54, wherein the rounded corner extends along part of a corner circle having the corner radius R.

57. The rolling paper according to claim 53, wherein the upper corner is formed as the rounded corner and referred to as a rounded upper corner.

58. The rolling paper according to claim 57, wherein the rounded upper corner has an upper corner radius R.sub.UC within a range of 0.5-6 mm.

59. The rolling paper according to claim 57, wherein only the upper corner is formed as the rounded corner.

60. The rolling paper according to claim 53, wherein the lower corner is formed as the rounded corner and referred to as a rounded lower corner.

61. The rolling paper according to claim 60, wherein the rounded lower corner has a lower corner radius R.sub.LC within a range of 0.25-5 mm.

62. The rolling paper according to claim 60, wherein only the lower corner is formed as the rounded corner.

63. The rolling paper according to claim 53, wherein the upper corner and the lower corner are formed as the rounded corner and referred to as a rounded upper corner and a rounded lower corner, respectively.

64. The rolling paper according to claim 63, wherein the rounded upper corner has an upper corner radius R.sub.UC, the rounded lower corner has a lower corner radius R.sub.LC, and the upper corner radius R.sub.UC differs from the lower corner radius R.sub.LC.

65. The rolling paper according to claim 53, wherein the lower edge comprises a chamfered part located between the lower curved part and the lower corner.

66. The rolling paper according to claim 65, wherein the chamfered part extends under an angle α away from the lower curved part and towards the upper edge.

67. The rolling paper according to claim 66, wherein the angle α is within a range of 5-45 degrees.

68. A tapered filter tip for a cigarette formed by a rolling paper according to claim 53, wherein: the paper body is folded along the at least one folding line to form a folded part of the paper body; and a remaining body part of the paper body is rolled around the folded part in a spiral configuration with the first side edge, the lower corner and the upper corner being located at an outer side of the tapered filter tip.

69. A kit of parts comprising a tapered hollow cylinder made of cigarette paper and a tapered filter tip according to claim 68.

70. An assembly comprising a tapered hollow cylinder made of cigarette paper and a tapered filter tip according to claim 68, wherein the tapered filter tip is located inside the tapered hollow cylinder made of cigarette paper.

71. A cigarette comprising an assembly according to claim 70 and a smokable substance, such as tobacco and/or cannabis, being located inside the tapered hollow cylinder made of cigarette paper.

72. A method for producing an assembly comprising a tapered hollow cylinder made of cigarette paper and a tapered filter tip according to claim 68, said method comprising: placing the tapered filter tip in a wide opening of the tapered hollow cylinder made of cigarette paper; and moving the filter tip inside the tapered hollow cylinder made of cigarette paper from the wide opening into a position adjacent to an opposite narrow opening of said tapered hollow cylinder.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0075] Embodiments of the rolling paper, tapered filter tip, kit of parts, assembly, cigarette and method according to the invention will be described by way of example only, with reference to the accompanying schematic drawings in which corresponding reference symbols indicate corresponding parts, and in which:

[0076] the FIGS. 1A and B schematically show a side view of a first embodiment of the rolling paper according to the invention,

[0077] FIG. 1C schematically shows a view in perspective of a tapered filter tip made from the rolling paper of FIG. 1A,

[0078] FIG. 1D schematically shows a side view of the tapered filter tip of FIG. 1C, the FIGS. 1E-G schematically show side view of a method for producing an assembly comprising a tapered hollow cylinder made of cigarette paper and the tapered filter tip of FIG. 1C,

[0079] FIG. 1H schematically shows a side view of a cigarette comprising the assembly of FIG. 1G and a smokable substance,

[0080] the FIGS. 2A and B schematically show a side view of a second embodiment of the rolling paper according to the invention,

[0081] FIG. 2C schematically shows a side view of a tapered filter tip made from the rolling paper of FIG. 2A,

[0082] the FIGS. 3A and B schematically show a side view of a third embodiment of the rolling paper according to the invention,

[0083] FIG. 3C schematically shows a side view of a tapered filter tip made from the rolling paper of FIG. 3A,

[0084] the FIGS. 4A and B schematically show a side view of a fourth embodiment of the rolling paper according to the invention,

[0085] FIG. 4C schematically shows a side view of a tapered filter tip made from the rolling paper of FIG. 4A,

[0086] FIGS. 5A and B schematically show a side view of a fifth embodiment of the rolling paper according to the invention, and

[0087] FIG. 5C schematically shows a side view of a tapered filter tip made from the rolling paper of FIG. 5A.

DETAILED DESCRIPTION OF THE DRAWINGS

[0088] FIG. 1A shows a side view of a first embodiment of the rolling paper 1 according to the invention. The rolling paper 1 is configured for rolling a tapered filter tip 2 for a cigarette 3. The rolling paper 1 comprises a flat paper body 4 comprising an upper edge 5, a lower edge 6, a first side edge 7, and a second side edge 8. The upper edge 5 is positioned opposite to the lower edge 6, and the first side edge 7 is positioned opposite to the second side edge 8.

[0089] The rolling paper 1 further comprises four folding lines 9A-D extending transversely to the upper edge 5 and the lower edge 6 and located closer to the second side edge 8 than the first side edge 7.

[0090] The upper edge 5 is larger than the lower edge 6. The upper edge 5 comprises an upper curved part 10. The upper edge 5 transitions into the first side edge 7 at an upper corner 11. The lower edge 6 comprises a lower curved part 12. The lower edge 6 transitions into the first side edge 7 at a lower corner 13. The upper corner 11 and the lower corner 13 are formed as a rounded corner 14 and therefore referred to as a rounded upper corner 14A and a rounded lower corner 14B, respectively.

[0091] In other examples of the rolling paper 1, at least one of the lower corner 13 and the upper corner 11 is a rounded corner 14. In said situation, a corner radius R of the rounded corner 14 is at least 0.25 mm, preferably at least 1 mm, and more preferably at least 2 mm. The corner radius R of the rounded corner 14 may be within the range of 0.25-6 mm, preferably within the range of 1-5 mm, and more preferably within the range of 2-4 mm. The rounded corner 14 extends along part of a corner circle 15 having the corner radius R. The corner radius R of the upper corner 11 (see R.sub.UC) and the lower corner 13 (see R.sub.LC) is explained more in detail in relation with FIG. 1B.

[0092] FIG. 1B shows further details of the rolling paper 1 of FIG. 1A. The rounded upper corner 14A has an upper corner radius R.sub.UC of about 4 mm. In other examples, the upper corner radius R.sub.UC is within the range of 0.5-6 mm, preferably within the range of 2-5 mm.

[0093] The rounded lower corner 14B has a lower corner radius R.sub.LC of about 2 mm. In other examples, the lower corner radius R.sub.LC is within the range of 1-5 mm, preferably within the range of 1-4 mm.

[0094] The upper corner radius R.sub.UC differs from the lower corner radius R.sub.LC. More specifically, the upper corner radius R.sub.UC is larger than the lower corner radius R.sub.LC. The upper corner radius R.sub.UC is about 2 times larger than the lower corner radius R.sub.LC. In other examples, the upper corner radius R.sub.UC is within the range of 1.1-5 times larger than the lower corner radius R.sub.LC, preferably within the range of 1.5-3 times larger than the lower corner radius R.sub.LC.

[0095] The rounded upper corner 14A extends along part of an upper corner circle 15A having the upper corner 11 radius R.sub.UC. The rounded lower corner 14B extends along part of a lower corner circle 15B having the lower corner radius R.sub.LC.

[0096] The upper curved part 10 and the lower curved part 12 extend parallel to each other. The upper curved part 10 extends along part of an upper edge circle 20 having an upper edge radius R.sub.UE. The lower curved part 12 extends along part of a lower edge circle 21 having a lower edge radius R.sub.LE.

[0097] The upper edge circle 20 and the lower edge circle 21 are concentric. The upper edge circle 20 has an upper edge centre 22, the lower edge circle 21 has a lower edge centre 23, and the upper edge centre 22 and the lower edge centre 23 coincide in a single centre point 24.

[0098] The upper curved part 10 extends along the complete upper edge 5. The lower edge 6 comprises a chamfered part 25 located between the lower curved part 12 and the lower corner 13. The chamfered part 25 extends under an angle α away from the lower curved part 12 and towards the upper edge 5. The angle α is about 20 degrees. In other examples, the angle α is within the range of 5-45 degrees, preferably within the range of 10-30 degrees.

[0099] The chamfered part 25 extends from the lower curved part 12 until the lower corner 13. The lower curved part 12 extends along a remaining edge part 26 of the lower edge 6. The remaining edge part 26 is formed by the rest of the lower edge 6 when the chamfered part 25 is excluded

[0100] The first side edge 7 comprises a first straight part 27 and the second side edge 8 comprises a second straight part 28. The first straight part 27 extends along the complete first side edge 7 and the second straight part 28 extends along the complete second side edge 8. The first straight part 27 and the second straight part 28 extend transversely, such as perpendicular, to the upper edge 5 and the lower edge 6. More specifically, the first straight part 27 and the second straight part 28 extend transversely, such as perpendicular, to the upper curved part 10 and the lower curved part 12.

[0101] A first virtual line 29 extending through the first straight part 27 and a second virtual line 30 extending through the second straight part 28 both extend through the single centre point 24.

[0102] The rolling paper 1 comprises four folding lines 9. In other examples, the rolling paper 1 comprises 1 or 2 or 3 or 5 folding lines 9. Each of the folding lines 9 is straight and extends transversely, such as perpendicular, to the upper edge 5 side and the lower edge 6 side. Each of the folding lines 9 is straight and extends transversely, such as perpendicular, to the upper curved part 10 and the lower curved part 12. Third virtual lines 31 extending through the folding lines 9 also extends through the single centre point 24.

[0103] The folding lines 9 are formed by weakening lines 32 in the paper body 4. The weakening lines 32 are formed by discontinuous perforation 33 in the paper body 4. In other examples, the weakening lines 32 are formed by one or more incisions in the paper body 4.

[0104] The paper body 4 is made from a paper having a weight of about 135 gram/meter.sup.2. In other examples, the paper body 4 is made from a paper having a weight within the range of 95-175 gram/meter.sup.2, preferable within the range of 120-150 gram/meter.sup.2.

[0105] The FIGS. 10 and 1D shows a tapered filter tip 2 made from the rolling paper 1 of FIG. 1A. The paper body 4 of said rolling paper 1 is folded along the folding lines 9 to form a folded part 34 of the paper body 4. A remaining body part 35 of the paper body 4 is rolled around the folded part 34 in a spiral configuration 36 with the first side edge 7, the lower corner 13 and the upper corner 11 being located at an outer side 37 of the tapered filter tip 2. The spiral configuration 36 of the tapered filter tip 2 defines a longitudinal tip axis 38.

[0106] Due to the fact that the lower corner 13 and the upper corner 11 are a rounded corner 14, the risk is reduced that the lower corner 13 or the upper corner 11 will damage a tapered hollow cylinder 40 made of cigarette paper 41 when the tapered filter tip 2 is moved inside said tapered hollow cylinder 40 made of cigarette paper 41.

[0107] The FIGS. 1E-G show side view of a method for producing an assembly 42 comprising a tapered hollow cylinder 40 made of cigarette paper 41 and the tapered filter tip 2 of FIG. 1C.

[0108] In FIG. 1E, a kit of parts 39 comprising said tapered hollow cylinder 40 made of cigarette paper 41 and said tapered filter tip 2 are provided. The tapered hollow cylinder 40 has a longitudinal cylinder axis 48.

[0109] The method comprises placing the tapered filter tip 2 in a wide opening 43 of the tapered hollow cylinder 40 made of cigarette paper 41, and moving the filter tip 2 inside the tapered hollow cylinder 40 made of cigarette paper 41 from the wide opening 43 into a position adjacent to an opposite narrow opening 44 of said tapered hollow cylinder 40.

[0110] In FIG. 1F, the tapered filter tip 2 is moving through the inside of the tapered hollow cylinder 40 towards the narrow opening 44.

[0111] The method comprises rotating the tapered filter tip 2 around the longitudinal tip axis 38 when moving the filter tip 2 inside the tapered hollow cylinder 40 made of cigarette paper 41.

[0112] The method comprises rotating the tapered filter tip 2 in a same direction as the spiral configuration 36 is rolled. The rotation direction of the spiral configuration 36 is indicated by rotation arrow 46. The rotation direction of the tapered filter tip 2 is indicated by rotation arrow 47.

[0113] The method comprises moving the tapered filter tip 2 inside the tapered hollow cylinder 40 made of cigarette paper 41 while keeping the lower edge 6 of the filter tip 2 directed to the narrow opening 44 of said tapered hollow cylinder 40.

[0114] In FIG. 1G, the tapered filter tip 2 has reached the position adjacent to the narrow opening 44 and inside the tapered hollow cylinder 40.

[0115] The result of the method is an assembly 42 comprising the tapered hollow cylinder 40 made of cigarette paper 41 and the tapered filter tip 2, wherein the tapered filter tip 2 is located inside the tapered hollow cylinder 40 made of cigarette paper 41. The tapered filter tip 2 is located in a position adjacent to the narrow opening 44 of said tapered hollow cylinder 40.

[0116] The rounded corners 14 of the tapered filter tip 2 reduce the risk that the tapered hollow cylinder 40 made of cigarette paper 41 is damaged when the method is used.

[0117] In addition, said method allows that the production of assemblies 42 comprising the tapered hollow cylinder 40 made of cigarette paper 41 and the tapered filter tip 2 can be automated, due to which the production time of said assemblies 42 can be reduced.

[0118] FIG. 1H schematically shows a side view of a cigarette 3 comprising the assembly 42 of FIG. 1G and a smokable substance 45.

[0119] The FIGS. 2A and B show a side view of a second embodiment of the rolling paper 1 according to the invention. The rolling paper 1 differs from FIG. 1A in that the lower curved part 12 extends along the complete lower edge 6. FIG. 2C shows a side view of a tapered filter tip 2 made from the rolling paper 1 of FIG. 2A.

[0120] The FIGS. 3A and B show a side view of a third embodiment of the rolling paper 1 according to the invention. The rolling paper 1 differs from FIG. 1A in that only the upper corner 11 is formed as the rounded corner 14. FIG. 3C shows a side view of a tapered filter tip 2 made from the rolling paper 1 of FIG. 3A.

[0121] The FIGS. 4A and B show a side view of a fourth embodiment of the rolling paper 1 according to the invention. The rolling paper 1 differs from FIG. 1A in that the lower curved part 12 extends along the complete lower edge 6 and that only the upper corner 11 is formed as the rounded corner 14. FIG. 4C shows a side view of a tapered filter tip 2 made from the rolling paper 1 of FIG. 4A.

[0122] The FIGS. 5A and B show a side view of a fifth embodiment of the rolling paper 1 according to the invention. The rolling paper 1 differs from FIG. 1A in that the lower curved part 12 extends along the complete lower edge 6 and that only the lower corner 13 is formed as the rounded corner 14. FIG. 5C shows a side view of a tapered filter tip 2 made from the rolling paper 1 of FIG. 5A. In an alternative embodiment, the lower edge 6 comprises a chamfered part 25 located between the lower curved part 12 and the lower corner 13 as shown in FIG. 1A.

[0123] As required, detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which can be embodied in various forms. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed structure. Further, the terms and phrases used herein are not intended to be limiting, but rather, to provide an understandable description of the invention.

[0124] The terms “a” or “an”, as used herein, are defined as one or more than one. The term plurality, as used herein, is defined as two or more than two. The term another, as used herein, is defined as at least a second or more. The terms including and/or having, as used herein, are defined as comprising (i.e., open language, not excluding other elements or steps). Any reference signs in the claims should not be construed as limiting the scope of the claims or the invention.

[0125] It will be apparent to those skilled in the art that various modifications can be made to the rolling paper, tapered filter tip, kit of parts, assembly, cigarette and method according to the invention without departing from the scope as defined in the claims.