CA2077090A1 - Packaging smoking materials - Google Patents
Packaging smoking materialsInfo
- Publication number
- CA2077090A1 CA2077090A1 CA 2077090 CA2077090A CA2077090A1 CA 2077090 A1 CA2077090 A1 CA 2077090A1 CA 2077090 CA2077090 CA 2077090 CA 2077090 A CA2077090 A CA 2077090A CA 2077090 A1 CA2077090 A1 CA 2077090A1
- Authority
- CA
- Canada
- Prior art keywords
- arrangement
- moisturising
- fluid
- tobacco
- liquid barrier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000000463 material Substances 0.000 title claims abstract description 26
- 230000000391 smoking effect Effects 0.000 title claims abstract description 13
- 238000004806 packaging method and process Methods 0.000 title abstract description 6
- 241000208125 Nicotiana Species 0.000 claims abstract description 31
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims abstract description 30
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 230000004888 barrier function Effects 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000012530 fluid Substances 0.000 claims description 17
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 15
- 239000012528 membrane Substances 0.000 claims description 10
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 4
- 235000019504 cigarettes Nutrition 0.000 claims description 4
- 229920005862 polyol Polymers 0.000 claims description 4
- 150000003077 polyols Chemical class 0.000 claims description 4
- 239000003755 preservative agent Substances 0.000 claims description 4
- 239000012266 salt solution Substances 0.000 claims description 4
- 239000000654 additive Substances 0.000 claims description 3
- 235000019506 cigar Nutrition 0.000 claims description 3
- 239000000796 flavoring agent Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 2
- 239000011780 sodium chloride Substances 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 description 6
- 239000001913 cellulose Substances 0.000 description 5
- 229920002678 cellulose Polymers 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 235000019505 tobacco product Nutrition 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000004627 regenerated cellulose Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007853 buffer solution Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006253 efflorescence Methods 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- -1 glycerol Chemical class 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000003094 microcapsule Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000003655 tactile properties Effects 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 239000003039 volatile agent Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
- B65D81/22—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient in moist conditions or immersed in liquids
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F25/00—Devices used by the smoker for controlling the moisture content of, or for scenting, cigars, cigarettes or tobacco
- A24F25/02—Moistening devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/46—Applications of disintegrable, dissolvable or edible materials
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
- Packages (AREA)
Abstract
ABSTRACT
Packaging Smoking Material There is provided a pouch 10 containing tobacco 11 and a moisturising element 13 containing a measured quantity of water in a fibrous pad. This element is sealed from the tobacco 11 by a vapour permeable liquid barrier 14 comprising a vapour permeable outer layer 15 and an inner, degradable liquid barrier 16. After a predetermined period of time the barrier 16 starts to degrade or dissolve thus allowing the moisture in the element 13 to pass into the tobacco 11 as a vapour through the vapour permeable layer 15.
Packaging Smoking Material There is provided a pouch 10 containing tobacco 11 and a moisturising element 13 containing a measured quantity of water in a fibrous pad. This element is sealed from the tobacco 11 by a vapour permeable liquid barrier 14 comprising a vapour permeable outer layer 15 and an inner, degradable liquid barrier 16. After a predetermined period of time the barrier 16 starts to degrade or dissolve thus allowing the moisture in the element 13 to pass into the tobacco 11 as a vapour through the vapour permeable layer 15.
Description
P~ckagin~ Smoking Materials This invention relates to packaging arrangements for smoking materials, particularly tobacco for pipe and hand-rolling consumption but also has application in other packaged -tobacco products such as cigars.
Such tobacco is usually sold in generally air-tight, fixed weight packages and normally includes a number of volatile components such as water, flavouring materials and some preservatives. The water provides beneficial tactile properties which assists the consumer in end use, for example the hand-rolling of cigarettes, and influences smoking quality.
Currently, hand-rolling tobacco is packaged and sold at high moisture content compared to the tobacco in manufactured cigarettes in order to satisfy the consumer's requirements. This moisture content is generally greater than about 18~ which results in a distinc-t disadvantage for the tobacco producer because, at such high values, tobacco becomes susceptible to mould cultures and requires precautions during manufacture. These precautions include the use of preservatives to inhibit mould growth and strict rotation of tobacco stock. The shelf life of the product may nevertheless be reduced.
Susceptibility to mould growth decreases rapidly below 18~ moisture content.
The prior art discloses humidification and humidistat devices for inclusion in the package or as 3 an integral part of the packaging associated with tobacco and food products, for example, US 1 871 419 discloses a humidifying sheet using a hydrated salt, a fibrous substrate and a vapour permeable membrane.
US 2 ~52 957 discloses a vapour permeable rnembrane of regenerated cellulose film enclosing an efflorescent ,. ~ -, . ,: .
,, , ~.. . . :
,, ~
.: , ~ :. ~ . :
salt and GB 1 369 992 discloses a humidistat comprising a pad containing a buffer solution enclosed in an envelope of vapour permeable thermo-plastic material. US 3 801 011 discloses water containing microcapsules with vapour-transmitting walls.
~ ore recently US 4 997 082 and US 5 037 459 have disclosed improvements to humidistat systems but, as far as is known to the applicants, the prior art has not recognised the benefits of a delayed action, self actuating humidistat or humidification system which is used to add water and, if desired, other volatile materials to tobacco or tobacco products after packing.
According to the present invention there is provided an arrangement comprising a generally air tight package and a smoking material/product contained therein, said arrangement incorporating self-actuating moisturising means adapted to release moisturising fluid thereby to increase the moisture content of the smoking material/product after a substantially predetermined period of time subsequent to packing.
Preferably the moisturising means comprises a liquid impermeable reactive membrane which encloses a pad containing the fluid contents of the moisturising means. In some arrangements the membrane decomposes or dissolves over said predetermined period thereby to become permeable and to release the moisturising fluid to the package.
Ideally there is also provided a vapour 3 permeable, liquid barrier which permits transfer of moisturising fluid in the vapour phase only to the package contents. This is because it is desirable to prevent localised concentrations of liquid phase reaching or "wicking" into the -tobacco or packaging material.
In some chosen arrangements the liquid barrier and the reactive membrane are formed as a coated film or laminate with the impermeable reactive membrane in contac-t with the moisturising fluid and with the liquid barrier in contact with the package contents.
A further feature is that the moisturising means comprises a plurality of moisturising elements and each element is adapted to release moisture after different periods of time. This allows reconditioning of the tobacco over an extended period of time.
Preferably said moisturising fluid comprises water and said fluid also comprises other volatile materials including flavourants and/or preservatives and/or additives.
In other arrangements the moisturising fluid comprises a saturated salt solution. In one embodiment the salt solution is of sodium chloride adapted to achieve an equilibrium relative humidity of a predetermined value in the packaged environment.
Preferably the relative humidity is about 75%, this relative humidity being compatible with the tobacco moisture that is preferred by the consumer for hand-rolling use. In further embodiments the self actuating moisturising means comprises hygroscopic material separated from the smoking material/product by a vapour permeable liquid barrier the hygroscopic material in turn being separated from a moisture source by a further vapour permeable liquid barrier.
Conveniently the hygroscopic material is a polyol such 3 as glycerol.
Embodiments of the invention will now be described in more detail by reference to the accompanying diagrammatic drawings in which:
Figure 1 shows a partially cut-away perspective view of a tobacco pouch according to the , . . ~ . , .
.. ~ .
,~
present invention, Figure 2 shows a cross-section through the tobacco pouch shown in figure 1, Figure 3 shows an exploded perspective of an alternative arrangement for the containment of moisturising liquid, Figure 4 shows a sectional view through a further arrangement according to the present invention, and Figure 5 shows a sectional view through a still further arrangement.
Referring to figures 1 and 2, there is shown a tobacco pouch 10 containing tobacco 11. The pouch 10 has a conventional closure flap 12 and incorporates a moisturising element 13 comprising a fibrous absorbent pad containing a measured quantity of water. There is the possibility of also including other volatile additives/flavours and bufering compounds (eg glycerol) according to particular requirements. The moisturising element 13 is located adjacent to and sealed against an inner surface of the pouch 10 by means of a vapour permeable liquid barrier 14 which lies adjacent to the tobacco 11. The liquid barrier 14 comprises a laminated or coated film material which has an outer, vapour permeable surface 15 in contact with the tobacco which surface 15 is a permanent liquid barrier and an inner, degradable liquid barrier 16 in contact with the moisturising pad, which barrier 16 after a time becomes liquid permeable. The vapour 3 permeable surface 15 is for example a regenerated cellulose film which may be coated or partially coated with the liquid barrier 16 as a lacquer or laminate.
The material of the barrier 16 is chosen to react with the liquid contents of the element 13 such that its liquid barrier properties diminish during storage whereby after a predetermined period the barrier 16 becomes liquid permeable. The moisturising liquid is then released as a vapour through the vapour permeable surface 15 to the contents ll of the pouch.
In the figure 3 arrangement there is a fibrous pad 17 and a single or multiplicity of liquid containers 1~ such as sachets constructed of a degradable liquid impermeable film. There is a vapour permeable liquid barrier l9 enclosing these components and sealing them from the tobacco material ll. It will be appreciated that the containers 18 could even be designed so as to degrade at different times or to contain different volatiles for release at different times.
In an alternative embodiment shown in figure 4 the pad 13 containing a measured quantity of chosen fluids is sealingly enclosed adjacent the pouch lO by a laminated membrane 20 having inner and outer layers 21, 22 of vapour permeable material such as cellulose film which layers 21, 22 are laminated with a layer in between. These layers 21, 22 may also include agents for modifying the permeability to water vapour, e.g. a nitrocellulose coating. The middle layer essentially comprisesa polyol e.g. glycerol, such that at low moisture content it is hygroscopic yet at higher moisture content the vapour pressure of water above the polyol/water system is sufficient to enable a high rate of transfer of moisture to the tobacco article.
This inner matrix acts initially as an absorber of 3 water from the pad 13 and after an in-terval, dependent upon the composition, acts as an emitter of water.
The overall driving force being the reservoir of water, the uptake by -the tobacco article being quasi exponential. It will, of course, be apparent that the timing of the release of moisture to the tobacco can . . ~ , ~ '. -, .
'~ ~
be varied by careful choice of the absorbent hygroscopic layer and the permeability of the layers 21, 22.
The amount of water contained by the device must be chosen to suit the end product application such that the desired moisture content of the tobacco can be achieved. By way of example, hand-rolling tobaccos tend to achieve the desired moisture content at about 75% Relative Humidity leading to a moisture 10 content of about 25-30~ in the tobacco. 3g of water is required to raise 25g of hand rolling tobacco from 18% moisture to 27~.
Another example of a suitable construction is a sandwich comprising two outer cellulose fi~ms enclosing a fibrous cellulose pad containing glycerol.
In figure 5 there is shown an arrangement very similar to that shown in figure 4. The difference is that the barrier layer is not formed as a laminated structure with the cellulose layers 21, 22. In figure 5 the polyo] is held in a fibrous cellulose pad 25 which is retained between the two layers 21, 22. The operation is, however, the same as that of the figure 4 arrangement.
The above refers to packaging and moisture addition to tobacco but it will be appreciated that other tobacco products and smoking materials including substitutes cigars and cigarettes could be used.
The tobacco can thus be packed at a lower moisture than is desired for use so that mould growth is reduced between packaging and consumption. The resistance to mould and control over molsturising provides increased shelf-life.
..
: .
; ' ' : .:
.
~,
Such tobacco is usually sold in generally air-tight, fixed weight packages and normally includes a number of volatile components such as water, flavouring materials and some preservatives. The water provides beneficial tactile properties which assists the consumer in end use, for example the hand-rolling of cigarettes, and influences smoking quality.
Currently, hand-rolling tobacco is packaged and sold at high moisture content compared to the tobacco in manufactured cigarettes in order to satisfy the consumer's requirements. This moisture content is generally greater than about 18~ which results in a distinc-t disadvantage for the tobacco producer because, at such high values, tobacco becomes susceptible to mould cultures and requires precautions during manufacture. These precautions include the use of preservatives to inhibit mould growth and strict rotation of tobacco stock. The shelf life of the product may nevertheless be reduced.
Susceptibility to mould growth decreases rapidly below 18~ moisture content.
The prior art discloses humidification and humidistat devices for inclusion in the package or as 3 an integral part of the packaging associated with tobacco and food products, for example, US 1 871 419 discloses a humidifying sheet using a hydrated salt, a fibrous substrate and a vapour permeable membrane.
US 2 ~52 957 discloses a vapour permeable rnembrane of regenerated cellulose film enclosing an efflorescent ,. ~ -, . ,: .
,, , ~.. . . :
,, ~
.: , ~ :. ~ . :
salt and GB 1 369 992 discloses a humidistat comprising a pad containing a buffer solution enclosed in an envelope of vapour permeable thermo-plastic material. US 3 801 011 discloses water containing microcapsules with vapour-transmitting walls.
~ ore recently US 4 997 082 and US 5 037 459 have disclosed improvements to humidistat systems but, as far as is known to the applicants, the prior art has not recognised the benefits of a delayed action, self actuating humidistat or humidification system which is used to add water and, if desired, other volatile materials to tobacco or tobacco products after packing.
According to the present invention there is provided an arrangement comprising a generally air tight package and a smoking material/product contained therein, said arrangement incorporating self-actuating moisturising means adapted to release moisturising fluid thereby to increase the moisture content of the smoking material/product after a substantially predetermined period of time subsequent to packing.
Preferably the moisturising means comprises a liquid impermeable reactive membrane which encloses a pad containing the fluid contents of the moisturising means. In some arrangements the membrane decomposes or dissolves over said predetermined period thereby to become permeable and to release the moisturising fluid to the package.
Ideally there is also provided a vapour 3 permeable, liquid barrier which permits transfer of moisturising fluid in the vapour phase only to the package contents. This is because it is desirable to prevent localised concentrations of liquid phase reaching or "wicking" into the -tobacco or packaging material.
In some chosen arrangements the liquid barrier and the reactive membrane are formed as a coated film or laminate with the impermeable reactive membrane in contac-t with the moisturising fluid and with the liquid barrier in contact with the package contents.
A further feature is that the moisturising means comprises a plurality of moisturising elements and each element is adapted to release moisture after different periods of time. This allows reconditioning of the tobacco over an extended period of time.
Preferably said moisturising fluid comprises water and said fluid also comprises other volatile materials including flavourants and/or preservatives and/or additives.
In other arrangements the moisturising fluid comprises a saturated salt solution. In one embodiment the salt solution is of sodium chloride adapted to achieve an equilibrium relative humidity of a predetermined value in the packaged environment.
Preferably the relative humidity is about 75%, this relative humidity being compatible with the tobacco moisture that is preferred by the consumer for hand-rolling use. In further embodiments the self actuating moisturising means comprises hygroscopic material separated from the smoking material/product by a vapour permeable liquid barrier the hygroscopic material in turn being separated from a moisture source by a further vapour permeable liquid barrier.
Conveniently the hygroscopic material is a polyol such 3 as glycerol.
Embodiments of the invention will now be described in more detail by reference to the accompanying diagrammatic drawings in which:
Figure 1 shows a partially cut-away perspective view of a tobacco pouch according to the , . . ~ . , .
.. ~ .
,~
present invention, Figure 2 shows a cross-section through the tobacco pouch shown in figure 1, Figure 3 shows an exploded perspective of an alternative arrangement for the containment of moisturising liquid, Figure 4 shows a sectional view through a further arrangement according to the present invention, and Figure 5 shows a sectional view through a still further arrangement.
Referring to figures 1 and 2, there is shown a tobacco pouch 10 containing tobacco 11. The pouch 10 has a conventional closure flap 12 and incorporates a moisturising element 13 comprising a fibrous absorbent pad containing a measured quantity of water. There is the possibility of also including other volatile additives/flavours and bufering compounds (eg glycerol) according to particular requirements. The moisturising element 13 is located adjacent to and sealed against an inner surface of the pouch 10 by means of a vapour permeable liquid barrier 14 which lies adjacent to the tobacco 11. The liquid barrier 14 comprises a laminated or coated film material which has an outer, vapour permeable surface 15 in contact with the tobacco which surface 15 is a permanent liquid barrier and an inner, degradable liquid barrier 16 in contact with the moisturising pad, which barrier 16 after a time becomes liquid permeable. The vapour 3 permeable surface 15 is for example a regenerated cellulose film which may be coated or partially coated with the liquid barrier 16 as a lacquer or laminate.
The material of the barrier 16 is chosen to react with the liquid contents of the element 13 such that its liquid barrier properties diminish during storage whereby after a predetermined period the barrier 16 becomes liquid permeable. The moisturising liquid is then released as a vapour through the vapour permeable surface 15 to the contents ll of the pouch.
In the figure 3 arrangement there is a fibrous pad 17 and a single or multiplicity of liquid containers 1~ such as sachets constructed of a degradable liquid impermeable film. There is a vapour permeable liquid barrier l9 enclosing these components and sealing them from the tobacco material ll. It will be appreciated that the containers 18 could even be designed so as to degrade at different times or to contain different volatiles for release at different times.
In an alternative embodiment shown in figure 4 the pad 13 containing a measured quantity of chosen fluids is sealingly enclosed adjacent the pouch lO by a laminated membrane 20 having inner and outer layers 21, 22 of vapour permeable material such as cellulose film which layers 21, 22 are laminated with a layer in between. These layers 21, 22 may also include agents for modifying the permeability to water vapour, e.g. a nitrocellulose coating. The middle layer essentially comprisesa polyol e.g. glycerol, such that at low moisture content it is hygroscopic yet at higher moisture content the vapour pressure of water above the polyol/water system is sufficient to enable a high rate of transfer of moisture to the tobacco article.
This inner matrix acts initially as an absorber of 3 water from the pad 13 and after an in-terval, dependent upon the composition, acts as an emitter of water.
The overall driving force being the reservoir of water, the uptake by -the tobacco article being quasi exponential. It will, of course, be apparent that the timing of the release of moisture to the tobacco can . . ~ , ~ '. -, .
'~ ~
be varied by careful choice of the absorbent hygroscopic layer and the permeability of the layers 21, 22.
The amount of water contained by the device must be chosen to suit the end product application such that the desired moisture content of the tobacco can be achieved. By way of example, hand-rolling tobaccos tend to achieve the desired moisture content at about 75% Relative Humidity leading to a moisture 10 content of about 25-30~ in the tobacco. 3g of water is required to raise 25g of hand rolling tobacco from 18% moisture to 27~.
Another example of a suitable construction is a sandwich comprising two outer cellulose fi~ms enclosing a fibrous cellulose pad containing glycerol.
In figure 5 there is shown an arrangement very similar to that shown in figure 4. The difference is that the barrier layer is not formed as a laminated structure with the cellulose layers 21, 22. In figure 5 the polyo] is held in a fibrous cellulose pad 25 which is retained between the two layers 21, 22. The operation is, however, the same as that of the figure 4 arrangement.
The above refers to packaging and moisture addition to tobacco but it will be appreciated that other tobacco products and smoking materials including substitutes cigars and cigarettes could be used.
The tobacco can thus be packed at a lower moisture than is desired for use so that mould growth is reduced between packaging and consumption. The resistance to mould and control over molsturising provides increased shelf-life.
..
: .
; ' ' : .:
.
~,
Claims (15)
1) An arrangement comprising a generally air tight package and a smoking material/product contained therein, said arrangement incorporating a self-actuating moisturising means adapted to release moisturising fluid thereby to increase the moisture content of the smoking material/product after a substantially predetermined period of time subsequent to packing.
2) An arrangement as claimed in claim 1 wherein the moisturising means comprises a liquid impermeable reactive membrane which encloses a pad containing the fluid contents of the moisturising means.
3) An arrangement as claimed in claim 2 wherein the membrane decomposes or dissolves over said predetermined period thereby to become permeable and to release the moisturising fluid to the package.
4) An arrangement as claimed in claim 3 wherein there is also provided a vapour permeable, liquid barrier which permits transfer of moisturising fluid in the vapour phase only to the package contents.
5) An arrangement as claimed in claim 4 wherein the liquid barrier and the reactive membrane are formed as a coated film or laminate with the impermeable reactive membrane in contact with the moisturising fluid and with the liquid barrier in contact with the package contents.
6) An arrangement as claimed in any one of claims 1 to 5 wherein the moisturising means comprises a plurality of moisturising elements.
7) An arrangement as claimed in claim 6 wherein each element is adapted to release moisture after different periods of time.
8) An arrangement as claimed in any one of claims 1 to 7 wherein said moisturising fluid comprises water.
9) An arrangement as claimed in claim 7 or claim 8 wherein said fluid also comprises other volatile materials including flavourants and/or preservatives and/or additives.
10) An arrangement as claimed in any one of claims 1 to 7 wherein the moisturising fluid comprises a saturated salt solution.
11) An arrangement as claimed in claim 10 wherein the salt solution is of sodium chloride adapted to achieve an equilibrium relative humidity of a predetermined value in the packaged environment.
12) An arrangement as claimed in claim 11 wherein the relative humidity is about 75%.
13) An arrangement as claimed in claim 1 wherein the self actuating means comprises hygroscopic material separated from the smoking material/product by a vapour permeable liquid barrier, the hygroscopic material in turn being separated from the moisture source by a further vapour permeable liquid barrier.
14) An arrangement as claimed in claim 13 wherein the hygroscopic material is a polyol such as glycerol.
15) An arrangement as claimed in any one of claims 1 to 14 wherein the smoking material/product comprises tobacco or cigars or cigarettes.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9118684.1 | 1991-08-31 | ||
| GB919118684A GB9118684D0 (en) | 1991-08-31 | 1991-08-31 | Packaging smoking articles |
| GB919118685A GB9118685D0 (en) | 1991-08-31 | 1991-08-31 | Packaging smoking materials |
| GB9118685.8 | 1991-08-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2077090A1 true CA2077090A1 (en) | 1993-03-01 |
Family
ID=26299470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2077090 Abandoned CA2077090A1 (en) | 1991-08-31 | 1992-08-28 | Packaging smoking materials |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0531075A1 (en) |
| CA (1) | CA2077090A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2243740A1 (en) * | 1997-07-25 | 1999-01-25 | E-L Management Corp. | Humidifying lipstick case |
| GB0710778D0 (en) * | 2007-06-05 | 2007-07-18 | British American Tobacco Co | Disposable humidifier for use with tobacco products |
| GB201021827D0 (en) | 2010-12-21 | 2011-02-02 | Filtrona Int Ltd | Flavour stick |
| GB2513163A (en) * | 2013-04-18 | 2014-10-22 | British American Tobacco Co | Container |
| CN106998809A (en) | 2014-10-02 | 2017-08-01 | 迪吉雷特有限公司 | Disposable cigarette bullet type electronic cigarette, manufacture method and application method |
| US9750811B2 (en) | 2015-09-15 | 2017-09-05 | Boveda, Inc. | Devices and methods for controlling headspace humidity and oxygen levels |
| WO2018071670A1 (en) * | 2016-10-12 | 2018-04-19 | Boveda Inc. | Device for controlling headspace humidity and methods for making the same |
| US12098015B2 (en) | 2016-10-12 | 2024-09-24 | Boveda Inc. | Device for controlling headspace humidity and methods for making the same |
| EP3525768B1 (en) | 2016-10-12 | 2021-08-11 | Drug Plastics & Glass Company, Inc. | Container and closure assembly with predetermined humidity |
| JP2022543198A (en) * | 2019-07-29 | 2022-10-11 | ジェイティー インターナショナル エス．エイ． | Moisturizing insert and method of moistening smoking article |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2368140A (en) * | 1941-02-05 | 1945-01-30 | Reddir Inc | Package and wrapper |
| US2452957A (en) * | 1944-01-04 | 1948-11-02 | Archie R Sabin | Moisture control device |
| GB1369992A (en) * | 1972-05-17 | 1974-10-09 | British American Tobacco Co | Packages |
| US3801011A (en) * | 1972-09-18 | 1974-04-02 | Minnesota Mining & Mfg | Humidity control means and packages containing the same |
| US5037459A (en) * | 1988-10-07 | 1991-08-06 | Philip Morris Management Corp. | Device for controlling relative humidity within a substantially sealed container |
-
1992
- 1992-08-28 CA CA 2077090 patent/CA2077090A1/en not_active Abandoned
- 1992-08-28 EP EP92307891A patent/EP0531075A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| EP0531075A1 (en) | 1993-03-10 |
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