KR102440344B1 - A wrapper with enhanced hydrostatic pressure - Google Patents

Abstract

A wrapper according to one aspect, a pulp layer; and a resin layer laminated on one surface of the pulp layer and preventing liquid from being absorbed, wherein the resin layer contains a silicone material, a wax material, the silicone material or the wax material in a matrix ) and at least one of microcapsules and flax.

Description

A wrapper with enhanced hydrostatic pressure

It relates to a wrapper having improved water resistance. More specifically, it relates to a paper wrapper to which a material for improving water resistance is applied.

A cigarette comprises a tobacco rod surrounded by a paper wrapper. As an example, the user may light the end of the tobacco rod of the cigarette and inhale the mainstream smoke through the end of the mouthpiece or the end of the filter. As another example, a user may couple a cigarette to a heated aerosol-generating device and inhale the aerosol through the end of the mouthpiece or the end of the filter. In such a heated aerosol-generating device, heat may be transferred from a heat source to an aerosol-generating material to generate an aerosol, and the aerosol-generating material may be located within the heat source or separated from the heat source.

A cigarette consists of a tobacco rod and at least one filter. And the cigarette is surrounded by a paper wrapper. Here, the wrapper may be a paper having hydrophobicity. The paper making up the wrapper may absorb the wetting agents, water, other compounds contained in the mainstream smoke or aerosol passing through the cigarette, or the moisture or moisture surrounding the paper. As a result, the wrapper may stain or weaken, which may negatively affect the appearance and structural integrity of the cigarette.

Republic of Korea Patent Publication No. 10-2015-0091118

An object of the present invention is to provide a wrapper having improved water resistance. The technical problem to be solved is not limited to the technical problems as described above, and other technical problems may exist.

A wrapper according to one aspect, a pulp layer; and a resin layer laminated on one surface of the pulp layer and preventing liquid from being absorbed, wherein the resin layer contains a silicone material, a wax material, the silicone material or the wax material in a matrix ) and at least one of microcapsules and flax.

In the above wrapper, the resin layer is laminated on one surface of the pulp layer by a coating process or a spraying process.

In the wrapper described above, the composition for forming the resin layer includes an anhydrous organic liquid that is volatile and has no reactivity.

In the wrapper described above, the liquid includes water or ethanol.

A cigarette according to another aspect includes a tobacco rod comprising an aerosol generating material; at least one filter segment; and a wrapper for wrapping at least one of the tobacco rod and the at least one filter segment, the wrapper comprising: a pulp layer; and a resin layer laminated on one surface of the pulp layer and preventing liquid from being absorbed, wherein the resin layer contains a silicone material, a wax material, the silicone material or the wax material in a matrix ) and at least one of microcapsules and flax.

In the cigarette described above, the resin layer is laminated on one surface of the pulp layer by a coating process or a spraying process.

In the cigarette described above, the composition for forming the resin layer includes an anhydrous organic liquid having volatility and no reactivity.

In the cigarette described above, the liquid includes water or ethanol.

By including the hydrophobic surface of the wrapper, the carbon monoxide diffusion rate or air dilution rate of the wrapper can be properly maintained while the user smokes. As a result, the amount of carbon monoxide in the mainstream smoke can be reduced.

Also, by including the hydrophobic surface of the wrapper, the wrapper may be resistant to moisture absorption. As a result, staining of the wrapper of the cigarette or the physical weakening of the wrapper can be prevented.

In addition, by including the hydrophobic surface of the wrapper, absorption of moisture or wetting agents contained in the mainstream smoke or aerosol passing through the cigarette into the wrapper can be prevented.

1 is a view illustrating an example in which a cigarette is inserted into a holder.
2 is a configuration diagram illustrating an example of a cigarette.
3 is a diagram for explaining an example of a wrapper.

Terms used in the embodiments are selected as currently widely used general terms as possible while considering functions in the present invention, but may vary according to intentions or precedents of those of ordinary skill in the art, emergence of new technologies, and the like. In addition, in a specific case, there is a term arbitrarily selected by the applicant, and in this case, the meaning will be described in detail in the description of the corresponding invention. Therefore, the term used in the present invention should be defined based on the meaning of the term and the overall content of the present invention, rather than the name of a simple term.

In the entire specification, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 is a view illustrating an example in which a cigarette is inserted into a holder.

Referring to FIG. 1 , a cigarette 2 may be inserted into an aerosol generating device 1 (hereinafter referred to as a 'holder'). When the cigarette 2 is inserted, the heater 130 is positioned inside the cigarette 2 . Accordingly, the aerosol-generating material of the cigarette 2 is heated by the heated heater 130 , thereby generating an aerosol.

The cigarette 2 may have a shape similar to that of a general combustion type cigarette. For example, the cigarette 2 may be divided into a first portion 210 including an aerosol generating material and a second portion 220 including a filter and the like.

The entire first part 210 may be inserted into the holder 1 , and the second part 220 may be exposed to the outside. Alternatively, only a portion of the first portion 210 may be inserted into the holder 1 , or portions of the first portion 210 and the second portion 220 may be inserted.

The user may inhale the aerosol while biting the second part 220 with the mouth. At this time, the aerosol is generated by the external air passing through the first portion 210, the generated aerosol is passed through the second portion 220 is delivered to the user's mouth.

External air may be introduced through at least one air passage formed in the holder 1 . Alternatively, external air may be introduced through at least one hole formed on the surface of the cigarette 2 .

2 is a configuration diagram illustrating an example of a cigarette.

Referring to FIG. 2 , the cigarette 2 includes a tobacco rod 210 , a first filter segment 221 , a cooling structure 222 and a second filter segment 223 . The first part described above with reference to FIG. 1 includes a tobacco rod 210 , and the second part includes a first filter segment 221 , a cooling structure 222 and a second filter segment 223 .

Referring to FIG. 2 , the cigarette 2 may be wrapped by wrappers 231 , 232 , 233 , 234 , 235 and 236 . For example, the tobacco rod 210 is wrapped by a first wrapper 231 , and the first filter segment 221 is wrapped by a second wrapper 232 . Further, the cooling structure 222 is wrapped by a third wrapper 233 , and the second filter segment 223 is wrapped by a fourth wrapper 234 .

The fifth wrapper 235 may be surrounded by the first wrapper 231 , the second wrapper 232 , and the third wrapper 233 . In other words, the tobacco rod 210 , the first filter segment 221 and the cooling structure 222 of the cigarette 2 may be further wrapped by the fifth wrapper 235 . In addition, the sixth wrapper 236 may be surrounded by at least a portion of the fifth wrapper 235 and the outside of the fourth wrapper 234 . In other words, at least a portion of the cooling structure 222 of the cigarette 2 and the second filter segment 223 may be further wrapped by the sixth wrapper 236 .

The first wrapper 231 , the second wrapper 232 , the fifth wrapper 235 , and the sixth wrapper 236 may be made of general wrapping paper. For example, the first wrapper 231 , the second wrapper 232 , the fifth wrapper 235 , and the sixth wrapper 236 may be a porous wrapper or a non-porous wrapper. For example, the thickness of the first wrapper 231 may be about 61 μm and the porosity may be about 15 CU, and the thickness of the second wrapper 232 may be about 63 μm and the porosity may be about 15 CU, but is not limited thereto. . In addition, the thickness of the fifth wrapper 236 may be about 66 μm and the porosity may be about 10 CU, and the thickness of the sixth wrapper 236 may be 66 μm and the porosity may be about 17 CU, but is not limited thereto.

In addition, an aluminum foil may be further included on the inner surface of the first wrapper 231 and/or the second wrapper 232 .

The third wrapper 233 and the fourth wrapper 234 may be made of hard wrapping paper. For example, the thickness of the third wrapper 233 may be about 158 μm and the porosity may be about 33 CU, and the thickness of the fourth wrapper 234 may be about 155 μm and the porosity may be about 46 CU, but is not limited thereto. .

A predetermined material may be internally added to the fifth wrapper 235 and the sixth wrapper 236 . Here, an example of the predetermined material may be silicon, but is not limited thereto. For example, silicon has characteristics such as heat resistance with little change with temperature, oxidation resistance without oxidation, resistance to various chemicals, water repellency against water, or electrical insulation. However, even if it is not silicon, any material having the above-described characteristics may be applied (or coated) to the fifth wrapper 235 and the sixth wrapper 236 without limitation.

The fifth wrapper 235 and the sixth wrapper 236 may prevent the cigarette 2 from burning. For example, when the tobacco rod 210 is heated by the heater 130, there is a possibility that the cigarette 2 is burned. Specifically, when the temperature rises above the ignition point of any one of the materials included in the tobacco rod 210, the cigarette 2 may be burned. Even in this case, since the fifth wrapper 235 and the sixth wrapper 236 include a non-combustible material, the burning phenomenon of the cigarette 2 can be prevented.

In addition, the fifth wrapper 235 may prevent the holder 1 from being contaminated by substances produced in the cigarette 2 . By the user's puff, liquid substances may be created in the cigarette 2 . For example, liquid substances (eg, moisture, etc.) may be generated by cooling the aerosol generated in the cigarette 2 by the outside air. As the fifth wrapper 235 wraps the tobacco rod 210 and/or the first filter segment 221 , the liquid substances produced within the cigarette 2 will be prevented from leaking out of the cigarette 2 . can Accordingly, the phenomenon that the inside of the holder 1 is contaminated by the liquid substances produced in the cigarette 2 can be prevented.

The diameter of the cigarette 2 is within the range of 5 mm to 9 mm, and the length may be about 48 mm, but is not limited thereto. For example, the length of the tobacco rod 210 is about 12 mm, the length of the first filter segment 221 is about 10 mm, the length of the cooling structure 222 is about 14 mm, and the length of the second filter segment 223 is about It may be 12 mm, but is not limited thereto.

The structure of the cigarette 2 shown in FIG. 2 is only an example, and some components may be omitted. For example, the cigarette 2 may not include one or more of the first filter segment 221 , the cooling structure 222 , and the second filter segment 223 .

Tobacco rod 210 contains an aerosol generating material. For example, the aerosol generating material may comprise at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol and oleyl alcohol.

In addition, the tobacco rod 210 may contain other additives such as flavoring agents, wetting agents and/or organic acids. For example, flavoring agents include licorice, sucrose, fructose syrup, isosweet, cocoa, lavender, cinnamon, cardamom, celery, fenugreek, cascarilla, sandalwood, bergamot, geranium, honey essence, rose oil, vanilla, lemon oil, orange oil, mint oil, cinnamon, caraway, cognac, jasmine, chamomile, menthol, cinnamon, ylang-ylang, sage, spearmint, ginger, coriander or coffee and the like. In addition, the wetting agent may include glycerin or propylene glycol, and the like.

As an example, the tobacco rod 210 may be filled with a reconstituent 　 tobacco sheet.

As another example, the tobacco rod 210 may be filled with cut filler. Here, tobacco cut fillers may be produced by cutting leaflet sheets.

As another example, the tobacco rod 310 may be filled with a plurality of tobacco strands in which the leaflet sheet is chopped. For example, the tobacco rod 310 may be formed by combining a plurality of tobacco strands in the same direction (parallel) or randomly.

For example, the plate-like sheet may be manufactured by the following process. First, the tobacco raw material is pulverized to form an aerosol-generating material (eg, glycerin, propylene glycol, etc.), a flavoring solution, a binder (eg, guar gum, xanthan gum, carboxymethyl cellulose (CMC), etc.), water After making a slurry in which the etc. are mixed, a plate-like sheet is formed using the slurry. When making the slurry, natural pulp or cellulose may be added, and one or more binders may be mixed and used. On the other hand, tobacco strands may be produced by slicing or shredding the dried leaflet sheet.

The tobacco raw material may be tobacco leaf flakes, tobacco stems and/or tobacco fines generated during tobacco processing. In addition, the plate-leaf sheet may contain other additives such as wood cellulose fibers.

5% to 40% of the aerosol-generating material may be added to the slurry, and 2% to 35% of the aerosol-generating material may remain in the platelet sheet. Preferably, 5% to 30% of the aerosol generating material may remain in the leaflet sheet.

In addition, prior to the process in which the tobacco rod 210 is packaged by the first wrapper 231 , a flavoring liquid such as menthol or a moisturizer may be sprayed and added to the center of the tobacco rod 210 .

The first filter segment 221 may be a cellulose acetate filter. For example, the first filter segment 221 may be a tube-shaped structure including a hollow therein. The length of the first filter segment 221 may be an appropriate length within the range of 4 mm to 30 mm, but is not limited thereto. Preferably, the length of the first filter segment 221 may be 10 mm, but is not limited thereto.

The diameter of the hollow included in the first filter segment 221 may be an appropriate diameter within the range of 2 mm to 4.5 mm, but is not limited thereto.

When the first filter segment 221 is manufactured, the hardness of the first filter segment 221 may be adjusted by adjusting the content of the plasticizer.

In addition, the first filter segment 221 may be manufactured by inserting a structure such as a film or a tube made of the same or different material inside (eg, hollow).

The first filter segment 221 may be manufactured using cellulose acetate. Accordingly, when the heater 130 is inserted, the inner material of the tobacco rod 210 may be prevented from being pushed back, and a cooling effect of the aerosol may be generated.

The cooling structure 222 cools the aerosol generated by the heater 130 heating the tobacco rod 210 . Thus, the user can inhale the aerosol cooled to a suitable temperature.

The length or diameter of the cooling structure 222 may be variously determined according to the shape of the cigarette 2 . For example, the length of the cooling structure 222 may be appropriately employed within the range of 7 mm to 20 mm. Preferably, the length of the cooling structure 222 may be about 14 mm, but is not limited thereto.

The cooling structure 222 may be fabricated by weaving polymer fibers. In this case, a fragrance liquid may be applied to the fibers made of the polymer. Alternatively, the cooling structure 222 may be manufactured by weaving a separate fiber coated with a flavoring solution and a fiber made of a polymer together.

Alternatively, the cooling structure 222 may be formed by a crimped polymer sheet. The polymer is made of a material selected from the group consisting of polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyethylene terephthalate (PET), polylactic acid (PLA), cellulose acetate (CA) and aluminum foil. can be

As the cooling structure 222 is formed by woven polymer fibers or crimped polymer sheets, the cooling structure 222 may include a single or a plurality of channels extending in the longitudinal direction. Here, a channel means a passage through which a gas (eg, air or aerosol) passes.

For example, the cooling structure 222 made of a crimped polymer sheet may be formed from a material having a thickness of between about 5 μm and about 500 μm, such as between about 10 μm and about 250 μm. Also, the total surface area of the cooling structure 222 may be between about 300 mm ² /mm and about 1000 mm ² /mm. Further, the aerosol cooling element may be formed from a material having a specific surface area of between about 10 mm ² /mg and about 100 mm ² /mg.

Meanwhile, the cooling structure 222 may include a thread containing a volatile flavor component. Here, the volatile flavor component may be menthol, but is not limited thereto. For example, the thread may be filled with a sufficient amount of menthol to provide at least 1.5 mg of menthol to the cooling structure 222 .

The second filter segment 223 may be a cellulose acetate filter. The length of the second filter segment 223 may be appropriately employed within the range of 4 mm to 20 mm. For example, the length of the second filter segment 223 may be about 12 mm, but is not limited thereto.

In the process of manufacturing the second filter segment 223 , the flavor may be generated by spraying a flavoring liquid to the second filter segment 223 . Alternatively, a separate fiber coated with a flavoring liquid may be inserted into the second filter segment 223 . The aerosol generated by the tobacco rod 210 is cooled as it passes through the cooling structure 222 , and the cooled aerosol is delivered to the user through the second filter segment 223 . Accordingly, when the flavoring element is added to the second filter segment 223 , the effect of enhancing the durability of the flavor delivered to the user may occur.

In general, paper can absorb water or other compounds. Thus, when the wrapper of the cigarette 2 is composed of paper, the paper can absorb wetting agents, water, other compounds, or ambient moisture or moisture contained in the aerosol passing through the cigarette 2 . In this case, the liquid absorbed into the paper may stain or weaken the paper, and may negatively affect the appearance and structural integrity of the cigarette 2 .

The wrapper 231, 232, 233, 234, 235, 236 according to an embodiment is contained in the aerosol or water (moisture) or compounds in the vicinity of the wrapper 231, 232, 233, 234, 235, 236. It can be implemented with paper that does not absorb easily. In other words, the wrappers 231 , 232 , 233 , 234 , 235 , and 236 may be implemented as wrapping paper to which a material for improving water resistance (hydrophobicity) is applied. Hereinafter, an example of the wrappers 231 , 232 , 233 , 234 , 235 and 236 will be described with reference to FIG. 3 .

3 is a diagram for explaining an example of a wrapper.

Referring to FIG. 3 , the wrapper 300 includes a pulp layer 310 and a resin layer 320 . Here, the pulp layer 310 may be a general wrapping paper or a hard wrapping paper. Here, since the general wrapping paper and the hard wrapping paper are the same as those described above with reference to FIG. 2 , a detailed description thereof will be omitted below.

The wrapper 300 may be manufactured by a coating process 410 or a spraying process 420 . In other words, the resin layer 320 may be laminated on the pulp layer 310 through the coating process 410 or the spraying process 420 . Here, the coating process 410 and the spraying process 420 will be described later.

Liquids such as moisture and wetting agents interact with the cellulosic fibers of the paper, modifying the structure of the cellulosic fibers. Thus, when paper is exposed to liquid, optical properties such as brightness, color, and opacity of the paper and mechanical properties such as tensile strength and permeability of the paper may change.

The resin layer 320 may prevent moisture, wetting agents, or other compounds contained in mainstream smoke or aerosol from being absorbed by the wrapper 300 . In addition, the resin layer 320 may prevent moisture present in the surrounding environment where the cigarette 2 is located from being absorbed by the wrapper 300 . Accordingly, as the liquid is absorbed, it is possible to prevent staining of the wrapper 300 or weakening of the strength of the wrapper 300 . In addition, as the liquid is absorbed into the wrapper 300 , the appearance of the cigarette 2 or the structural integrity of the cigarette 2 may be prevented from being broken.

The resin layer 320 (ie, the hydrophobic surface) of the wrapper 300 may inhibit the transfer, absorption, and accumulation of moisture, wetting agents, or other liquid compounds in the wrapper. Specifically, the resin layer 320 of the wrapper 300 may reduce or prevent staining of the wrapper 300 by moisture, a wetting agent, or other liquid compound.

For example, the resin layer 320 may include at least one of a silicone material, a wax material, and a natural material as a component. For example, the waxy material includes paraffin wax, embed, crystal palm, multi-wax, carnauba wax, and candelia wax. ), castor wax, microcrytallin wax, gel wax, bees wax, stearic acid, polypropylene wax, polyethylene wax ( polyethylene wax), one of polyethylene acrylic wax, or a combination of at least two of the above-described materials, but is not limited thereto. In addition, the silicone-like material may be liquid silicone, but is not limited thereto. In addition, the natural fiber may be flax, but is not limited thereto. When the hemp absorbs moisture, the strength increases, so that the water resistance of the wrapper 300 can be improved.

In addition, the resin layer 320 may be composed of fine particles. Here, the fine particles may be microcapsules using a silicone-like material or a wax-like material as a matrix. For example, the fine particles may reinforce the strength by first coating the waterproof nanoprotrusion structure with methylcellulose acetate, and the physical properties of the powder may be strengthened by secondary coating with a wax such as paraffin. Accordingly, the resin layer 320 including the fine particles may improve the water resistance of the wrapper 300 .

Components of the resin layer 320 are not limited to those described above. In other words, any material capable of preventing the permeation of liquid, such as moisture, may be a component of the resin layer 320 without limitation.

As the resin layer 320 is included in the wrapper 300 , the moisturizing agent or flavor component contained in the tobacco rod 210 is transferred to the wrapper 300 to prevent staining or loss of flavor in the wrapper 300 . can be In addition, compared with a conventional wrapper generated by covalent bonding of a hydrophobic functional group, the wrapper 300 according to an embodiment may be manufactured without inducing a covalent bonding reaction through secondary processing through printing. In addition, the wrapper 300 according to an embodiment forms a resin layer in the papermaking process, so that it is more resistant to contamination than a conventional wrapper, and the work using the wrapper 300 is easy.

The resin layer 320 may be applied on the pulp layer 310 through the coating process 410 or the spraying process 420 . Specifically, by the coating process 410 or the spraying process 420 , the material (eg, silicone or silicone polymer) constituting the resin layer 320 is adhered to the cellulose fibers included in the pulp layer 310 . . Accordingly, a hydrophobic surface (ie, the resin layer 320 ) having waterproof properties is formed on the wrapper 300 .

The composition (hereinafter, referred to as 'composition') forming the resin layer 320 may be one in which at least one of a silicone material, a wax material, a natural material, and fine particles is dissolved in a solvent. Here, the solvent means an anhydrous organic liquid that has volatility and has no reactivity. For example, the solvent may be, but is not limited to, water or ethanol.

Ethanol as a solvent can extend the useful life of the composition. Ethanol may improve the drying efficiency of the moisture of the composition, and ethanol may prevent a decrease in strength due to moisture absorption of the wrapper 300 . Ethanol may be used in an amount of about 10% to about 40% by weight based on the total composition, but is not limited thereto. Ethanol is vaporized in the manufacturing process of the wrapper 300 , and may not be included in the resin layer 320 .

In addition, water as a solvent may be used in an amount of about 30% to 80% by weight based on the total composition. Water is vaporized in the manufacturing process of the wrapper 300 , so it may not be included in the resin layer 320 .

The coating process 410 refers to a process of coating the resin layer 320 on the pulp layer 310 of the wrapper 300 . For example, the wrapper 300 may be prepared by coating the pulp layer 310 with a mixture of the OP varnish and composition during a papermaking process.

The spraying process 420 refers to a process of spraying the material constituting the resin layer 320 on the pulp layer 310 of the wrapper 300 . For example, by spraying the composition on the pulp layer 310 at the rear end of the papermaking process, the wrapper 300 may be manufactured.

Those of ordinary skill in the art related to the present embodiment will understand that it can be implemented in a modified form within a range that does not deviate from the essential characteristics of the above description. Therefore, the disclosed methods are to be considered in an illustrative rather than a restrictive sense. The scope of the present invention is indicated in the claims rather than the foregoing description, and all differences within the scope equivalent thereto should be construed as being included in the present invention.

1: Holder
110: battery
120: control unit
2: Cigarette
210: first part
220: second part

Claims (4)

pulp layer; and
A resin layer laminated on one surface of the pulp layer and preventing liquid from being absorbed;
The resin layer includes microcapsules using a silicone-like material or a wax-like material as a matrix,
The microcapsule is a wrapper, characterized in that the primary coating with methyl cellulose acetate, and secondary coating with wax. The method of claim 1,
The resin layer is a wrapper laminated on one surface of the pulp layer by a coating process or a spraying process. The method of claim 1,
The composition for forming the resin layer is a wrapper comprising an anhydrous organic liquid that is volatile and has no reactivity. a tobacco rod comprising an aerosol generating material;
at least one filter segment; and
a wrapper for wrapping at least one of the tobacco rod and the at least one filter segment;
The rapper is
pulp layer; and
A resin layer laminated on one surface of the pulp layer and preventing the liquid from being absorbed;
The resin layer includes microcapsules using a silicone-like material or a wax-like material as a matrix,
The microcapsule is a cigarette, characterized in that the primary coating with methylcellulose acetate, and secondary coating with wax.

Images