CN113061422A

CN113061422A - Cooling element and aerial bomb with same

Info

Publication number: CN113061422A
Application number: CN201911291874.6A
Authority: CN
Inventors: 王立平; 王华友; 周兴夫; 周应山
Original assignee: Maibo High Polymer Material Ningbo Co ltd
Current assignee: Maibo High Polymer Material Ningbo Co ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2021-07-02

Abstract

The invention discloses a cooling element and an aerial fog bomb with the cooling element, wherein the cooling element comprises a polymer which generates phase change heat absorption within the range of 35-70 ℃, and the aerial fog bomb comprises an aerial fog substrate, the cooling element and an outer wrapping layer. According to the aerial fog bomb with the cooling element, the temperature of aerial fog at the inlet can be effectively reduced to about 60 ℃ or below.

Description

Cooling element and aerial bomb with same

Technical Field

The present invention relates to a cooling element and an aerosol bomb having the cooling element, and more particularly to a cooling element for liquid atomization and heating of non-combustible aerosol generating technology and an aerosol bomb having the cooling element.

Background

The traditional cigarette takes in nicotine by burning tobacco, and substances such as tar and the like inhaled at the same time have great harm to human health. The art of producing an aerosol or aerosol by heating an aerosol substrate rather than burning tobacco to ingest nicotine is under development. This technique heats an aerosol substrate containing nicotine and the like to a temperature of 200 c to 400 c to produce a nicotine-containing aerosol.

The traditional cigarette is burnt at a temperature of about 800 ℃, so that most of water in the tobacco is evaporated when the water in the tobacco forms smoke at the high temperature, the smoke is relatively dry, and the temperature sensed by a smoker when the smoker inhales the smoke is low. The aerosol or aerosol generated by heating the aerosol substrate without combustion may contain high levels of moisture and aerosol vaporized from the aerosol substrate, such as propylene glycol, glycerin, etc., which are perceived by the smoker as having a high temperature when inhaling. An aerosol that is not properly cooled may even cause the user to feel hot. The same problem occurs when using a traditional Chinese medicine which is not burned by heating.

Disclosure of Invention

To solve the problems of the prior art, the present invention proposes a cooling element for cooling an aerosol generated in an aerosol bomb, characterized in that the cooling element comprises a first polymer which absorbs heat in a phase transition in the range of 35 ℃ to 70 ℃.

Further, the cooling element further comprises a second polymer that absorbs heat in a phase transition in a range of 70 ℃ to 140 ℃.

Further, the polymer includes polylactic acid or a copolymer of polylactic acid.

Further, the polymer includes polyethylene glycol or polyethylene oxide.

Further, the polymer in the cooling element does not exhibit a significant exothermic phase change in the range of 80 ℃ to 120 ℃ as it heats up.

Further, the cooling element includes a high temperature cooling section and a low temperature cooling section.

Further, the cooling element is added with triacetin, triethyl citrate, low molecular weight glycol, or a mixture of triacetin and cellulose acetate fibers.

Further, mint, natural or synthetic essence is added into the cooling element.

Further, the cooling element includes a film, a fiber, a bonded fiber, a nonwoven fabric, or a nonwoven fabric bonded at a contact point portion.

Further, the film includes a polymer that absorbs heat from a phase change in a range of 35 ℃ to 70 ℃.

Further, the film includes a support layer that does not melt at 180 ℃.

Further, the fiber, the binder fiber, the nonwoven fabric, or the fibers in the nonwoven fabric partially bound at the contact points is a monocomponent fiber or a bicomponent fiber, and the fiber includes a polymer that absorbs heat from a phase change in a range of 35 ℃ to 70 ℃.

Further, the copolymer of polylactic acid includes a block copolymer of polylactic acid and polyethylene glycol or polypropylene glycol or poly (ethylene glycol-propylene glycol).

Further, the aerosol projectile has an aerosol substrate and a cooling element.

Further, the aerosol substrate and the cooling element in the aerosol bomb are adjacent or separated by a spacer element.

Further, the aerosol bomb includes an outer coating.

Further, the aerosol projectile includes a mouth.

According to the aerial fog bomb with the cooling element, the temperature of aerial fog at the inlet can be effectively reduced to about 60 ℃ or below, the cooling element comprises a material with a large specific surface area, so that the aerial fog and the polymer of the cooling element are favorably contacted and heat exchanged, and condensate generated during aerial fog cooling has a good surface adsorption effect, so that the aerial fog becomes dry, and a user can perceive a low temperature.

The cooling element of the present invention can be applied to various aerosol projectiles, such as those containing essence, nicotine, caffeine, herbal medicine, tea, flowers, etc. In order to make the aforementioned and other objects of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

FIG. 1a is a longitudinal section through a cooling element according to a first embodiment of the invention;

FIG. 1b is a cross-sectional view of a cooling element according to a first embodiment of the invention;

FIG. 1c is a DSC of a polyethylene;

FIG. 1d is a DSC of a polylactic acid;

FIG. 1e is a DSC profile of another polylactic acid;

FIG. 1f is an enlarged schematic cross-sectional view of a bicomponent fiber;

FIG. 1g is an enlarged cross-sectional schematic view of another bicomponent fiber;

FIG. 2a is a longitudinal section through a cooling element according to a second embodiment of the invention;

FIG. 2b is a cross-sectional view of the high temperature cooling section of the cooling element according to the second embodiment of the present invention;

FIG. 2c is another cross-sectional view of the high temperature cooling section of the cooling element according to the second embodiment of the present invention;

fig. 2d is a cross-sectional view of a subcooling section of a cooling element according to a second embodiment of the invention.

FIG. 3a is a longitudinal cross-sectional view of a third disclosed embodiment of an aerosol container;

FIG. 3b is a cross-sectional view of the high temperature cooling section of the cooling element in a third embodiment of the disclosed invention;

FIG. 4a is a longitudinal cross-sectional view of a fourth embodiment of the disclosed aerosol bomb;

fig. 4b is a cross-sectional view of a spacer element according to a fourth embodiment of the disclosure.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

The terms "upstream" and "downstream" refer to the relative positions of the mainstream aerosol as it is drawn from the aerosol substrate toward the cooling element and the mouth of the smoker.

The term "phenol" refers to a class of compounds consisting of a hydroxyl group directly bonded to an aromatic hydrocarbon group. The phenols include phenol, catechol, o-phenol, m-cresol, p-cresol, and the like.

The term "DSC" refers to differential scanning calorimetry. DSC can study the relationship of the physical quantities DeltaQ and DeltaH with the temperature change of the substance under the temperature program control. In the present invention, DSC is used to measure the absorption or release of heat at elevated temperatures of the polymer in the cooling element.

"PET" in the present invention means polyethylene terephthalate.

"co-PET" as used herein refers to a copolyester of polyethylene terephthalate.

The term "PBT" as used herein means polybutylene terephthalate.

The term "PTT" in the present invention means polytrimethylene terephthalate.

"PEG" in the present invention means polyethylene glycol.

"PEO" in the present invention refers to polyethylene oxide.

The poly-L-lactic acid, PLLA for short, in the present invention refers to a poly-L-lactic acid prepared from a monomer L-lactic acid, but a small amount of D-lactic acid may be randomly copolymerized therein, and the melting point is 145 to 180 ℃.

The poly-D-lactic acid, PDLA for short, is a poly-lactic acid prepared from a monomer D-lactic acid, but may have a small amount of L-lactic acid randomly copolymerized therein, and has a melting point of 145-180 ℃.

The poly-D, L-lactic acid, PDLLA for short, in the invention refers to a polylactic acid which is prepared from monomers of D-lactic acid and L-lactic acid and has a melting point of less than 145 ℃.

The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.

Unless otherwise defined, terms used herein, including technical and scientific terms, have the ordinary meaning as understood by those skilled in the art. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.

First embodiment

FIG. 1a is a longitudinal section through a cooling element according to a first embodiment of the invention; FIG. 1b is a cross-sectional view of a cooling element according to a first embodiment of the invention; FIG. 1c is a DSC of a polyethylene; FIG. 1d is a DSC of a polylactic acid; FIG. 1e is a DSC of another polylactic acid.

As shown in fig. 1a and 1b, a cooling element according to a first embodiment of the present invention for cooling an aerosol generated in an aerosol bomb, the cooling element 300 comprises a first polymer that absorbs heat from a phase change in the range of 35 ℃ to 70 ℃.

An aerosol cartridge suitable for use in the present embodiment comprises an aerosol substrate (not shown), a cooling element 300 adjacent to or spaced from the aerosol substrate by a spacer element (not shown), and an outer wrapper (not shown). The outer wrapping piece can be common cigarette paper, thickened cigarette paper, a paper tube, an aluminum plastic film or a paper aluminum plastic film and the like. The aerosol matrix contains aerosol such as propylene glycol, glycerol, water, etc. The aerosol substrate may also include a carrier, such as tobacco, herbal medicine, fibers, paper dust, particles, and the like. When the traditional cigarette is burnt, most of moisture in tobacco is evaporated at the temperature of about 800 ℃, the smoke is relatively dry, and the temperature sensed by a smoker when the smoker inhales the smoke is low. In contrast, the temperature of the aerosol when heated is relatively low, only 200-. Cooling the aerosol to a temperature at which the smoker feels comfortable and removing the higher temperature condensate is therefore an important consideration for aerosol bombs.

The aerosol substrate in the atomizing aerosol bomb is a liquid storage element loaded with aerosol, and the liquid storage element can comprise a porous material and store the aerosol by utilizing the capillary force of the porous material.

In use of the aerosol, the aerosol in the aerosol matrix is heated and the resulting aerosol passes through the cooling element 300 and is suitably cooled. The temperature of the aerosol is reduced by transferring the heat of the aerosol to the cooling element 300 through heat exchange, and if substances in the cooling element 300 are melted after absorbing the heat, the heat in the aerosol can be absorbed more, so that the temperature reduction effect of the aerosol is more remarkable.

The cooling element 300 of the present invention comprises a polymer in which crystalline and amorphous regions are typically present.

Amorphous polymers or amorphous regions in polymers undergo a transition from a glassy state to a highly elastic state at elevated temperatures, a glass transition which is generally considered to be either non-heat absorbing or low heat absorbing; crystalline polymers or crystalline regions in polymers change from a crystalline solid state to a viscous fluid state at elevated temperatures, a process which requires significant heat absorption from the outside and which appears as an endothermic peak on a DSC diagram. Amorphous regions of certain polymers crystallize and emit heat at elevated temperatures, which is manifested as an exothermic peak in the DSC profile. Some polymers undergo a solid-solid first order transition at lower temperatures, which phase transition can absorb heat and also exhibits an endothermic peak on the DSC diagram. Different polymers show different endothermic and exothermic conditions on a DSC chart in the process of temperature rise; even the same polymer may exhibit different endotherms and exotherms in the DSC profile during temperature increase due to different fabrication or processing techniques.

FIG. 1c is a DSC of a polyethylene. As shown in FIG. 1c, the polyethylene has a strong endothermic peak at about 127 ℃ when heated, which is the phase transition endotherm of the polyethylene crystal melting. The polyethylene has no endothermic peak below 70 ℃, so that the polyethylene has no obvious cooling effect on the aerosol in the temperature range of 35-70 ℃.

Most crystalline polymers have a DSC profile similar to that of FIG. 1c, but the temperature at which the crystals melt varies from polymer to polymer. The melting temperature of polyethylene glycol (PEG) and polyethylene oxide (PEO) is low, such as PEG-1000, PEG-1500, PEG-2000, PEG-4000, PEG-6000, PEG8000, PEG-10000, and PEG-20000 with melting temperature of 37 deg.C, 46 deg.C, 51 deg.C, 55 deg.C, 57 deg.C, 60 deg.C, 61 deg.C, and 62 deg.C. Molecular weight is 10⁵-10⁷The polyethylene oxide melting temperature of (A) is 63-68 ℃. Thus PEG or PEO can more effectively cool the higher temperature aerosol to around 60 ℃ or below.

FIG. 1d is a DSC of polylactic acid. As shown in FIG. 1d, the polylactic acid has a strong endothermic peak at about 167 ℃, which is the phase transition endotherm of the melting of the polylactic acid crystal; meanwhile, the polylactic acid has an obvious endothermic peak at about 62 ℃, which is a phase change endothermic peak of solid-solid first-order transition in a low temperature region, but the polylactic acid has obvious phase change exothermic at about 107 ℃, and the phase change exothermic can reduce the effect of the cooling element 300 in cooling the aerosol under the condition of no other cooling measures.

The polymer in the cooling element 300 may not exhibit a significant exothermic phase change in the range of 80 c to 120 c as it heats up. FIG. 1e is a DSC of another polylactic acid. As shown in FIG. 1e, the polylactic acid has a strong endothermic peak at about 164 ℃, which is the phase transition endotherm of the melting of the polylactic acid crystal; meanwhile, the polylactic acid has an obvious endothermic peak at about 59 ℃, which is the phase change endotherm of the solid-solid first-order transformation of the polylactic acid in a low temperature region. When the aerosol having a temperature higher than 164 ℃ passes through the cooling member 300 including such polylactic acid, the polylactic acid crystals melt and absorb a large amount of heat, so that the temperature of the aerosol rapidly decreases to about 150 ℃. The phase change heat absorption of the polylactic acid at about 59 ℃ can effectively further reduce the temperature of the gas mist to about 56 ℃ or below. Since the polylactic acid has no exothermic peak between the crystallization melting endothermic peak and the solid-solid first-order phase transition endothermic peak, the cooling effect of the cooling element 300 is effectively improved.

Polylactic acid, copolymers of polylactic acid, polyethylene glycol and polyethylene oxide all have good biosafety and are suitable for use as polymers for the cooling element 300 in an aerosol. The polylactic acid includes, for example, poly-D-lactic acid, poly-L-lactic acid, poly-D, L-lactic acid. Polyethylene glycol, polyethylene oxide, polylactic acid, and copolymers of polylactic acid, such as polylactic acid-glycolic acid copolymer, polylactic acid-polyethylene glycol copolymer, and the like, may be used alone, or may be mixed or compounded. Block copolymerization of polylactic acid and polyethylene glycol or polypropylene glycol or poly (ethylene glycol-propylene glycol), such as block copolymerization of polylactic acid and polyethylene glycol with molecular weight of 1 thousand to 2 ten thousand, or block copolymerization of polylactic acid and polyethylene glycol with molecular weight of 10⁵-10⁷The polyethylene oxide block copolymer can retain the thermal response performance of polyether chains, so that the copolymer can absorb heat at 35-70 ℃.

To enhance the cooling effect of the cooling element 300, the cooling element 300 may further include a second polymer that absorbs heat in a phase change in a range of 70 ℃ to 140 ℃. The cooling element 300 may comprise more than one polymer, such as two or more first polymers, or two or more first and second polymers. For example, a second polymer having a melting point in the range of 70 ℃ to 140 ℃, preferably 90 ℃ to 140 ℃, may be added to the first polymer to form the cooling element 300 having two or more polymer components. When the high-temperature aerosol passes through the cooling element 300, the cooling element 300 can generate phase change heat absorption in a plurality of temperature intervals, and the temperature of the aerosol is more effectively reduced to about 60 ℃ or below. The polymer having a melting point of 90 to 140 deg.C includes poly D, L-lactic acid, low-melting co-PET, low-density polyethylene, high-density polyethylene, etc.

In order to increase the heat exchange efficiency between the aerosol and the cooling element 300, the cooling element 300 of the present invention comprises a material with a large specific surface area, such as a film, a fiber, a bonded fiber, a non-woven fabric bonded at the contact point portion, and the like. The materials may be arranged in an ordered or disordered manner within cooling element 300. The material with larger specific surface area is also beneficial to adsorbing condensate in the aerial fog, so that the aerial fog becomes dry and the user can perceive lower temperature. The condensate can absorb partial phenols and aldehydes, thereby reducing harmful substances such as phenols and aldehydes in the aerosol.

The cooling element 300 may be made from a multilayer composite film, such as a film formed by co-extruding polylactic acid and co-PET having a melting point of about 110 ℃ such that the polylactic acid has a DSC profile similar to that shown in fig. 1 e. The cooling element 300 has a remarkable cooling effect on the aerosol in three temperature ranges of about 165 ℃, about 110 ℃ and about 59 ℃. Polylactic acid with a melting point of about 135 ℃ can be used instead of co-PET, so that the cooling element 300 can be completely biodegraded when being discarded after use.

The film may include a support layer (not shown) that does not melt at 180 c, which may be paper, PET, PBT, PTT, co-PET with a melting point of about 200 c, or the like, which does not melt readily when in contact with the aerosol, which facilitates the shape integrity of the cooling element 300 during use.

The cooling element 300 may be made of fibers, which may be filaments or staple fibers. The cooling element 300 made of filaments is axially more rigid and the cooling element 300 made of staple fibers is radially more elastic.

The fibers may be monocomponent or bicomponent. FIG. 1f is an enlarged schematic cross-sectional view of a bicomponent fiber; FIG. 1g is an enlarged cross-sectional view of another bicomponent fiber. The cooling element 300 may be formed of bicomponent fibers 2 having a sheath 21 and a core 22 by thermal bonding to form a three-dimensional structure of a three-dimensional network.

The bicomponent fibers 2 may be in a concentric, eccentric or side-by-side configuration. The fibers may be bonded into shape and formed into the cooling element 300 by a plasticizer or by heating. As shown in fig. 1f, the skin layer 21 and the core layer 22 are of a concentric structure. As shown in fig. 1g, the skin layer 21 and the core layer 22 are of an eccentric structure. The same density results in a cooler element 300 made of bicomponent fibers 2 having a concentric configuration being stiffer and a cooler element 300 made of bicomponent fibers 2 having an eccentric configuration being more resilient.

Cooling element 300 may also be made from a nonwoven fabric, including a hot rolled nonwoven fabric, a hot air nonwoven fabric, a spun bonded nonwoven fabric, a melt blown nonwoven fabric, and the like. It is also possible to bond the nonwoven fabric at the contact points when manufacturing the cooling element 300.

The fibers, the bonding fibers or the fibers made into the non-woven fabric comprise fibers which generate phase change heat absorption within the range of 35-70 ℃, or polymers which generate phase change heat absorption within the range of 35-70 ℃ are doped in the fibers and the non-woven fabric, so that the cooling element 300 has the function of effectively reducing the temperature of the aerosol to 60 ℃ or below.

Phenolic reducing additives such as triacetin, triethyl citrate, low molecular weight polyethylene glycol, mixtures of triacetin and cellulose acetate fibers, and the like may be added to the cooling element 300. Flavoring agents, such as mint, natural or synthetic flavors, and the like, may also be added to the cooling element 300 to allow the user to inhale aerosols having different flavors.

In this embodiment, the cooling element 300 comprises polylactic acid having an endotherm of phase transition in the range of 35 ℃ to 70 ℃, and the DSC spectrum of the polylactic acid is shown in FIG. 1 e.

The cooling element 300 is a rolled or folded film comprising a support layer. The film is formed by coating polylactic acid on paper or by co-extruding polylactic acid and PET double layers. The melting point of the supporting layer is higher than 180 ℃, and the supporting layer is not easy to melt when in contact with aerosol. It is advantageous for the cooling element 300 to maintain shape integrity during use. co-PET having a melting point of about 110 c may be doped in the polylactic acid to improve the cooling effect.

In this embodiment, co-PET with a melting point of about 110 ℃, polylactic acid and PET may be co-extruded, and PET may be used as the middle layer to form a film, so as to manufacture the cooling element 300 with a better cooling effect.

In this embodiment, the cooling element 300 may also be made of a non-woven fabric with contact points partially bonded, the non-woven fabric is made of a bicomponent fiber with a sheath-core structure, the core layer of the bicomponent fiber is PET, the sheath layer is polylactic acid with a phase change endotherm in a range of 35-70 ℃, and a DSC spectrum of the polylactic acid is shown in fig. 1 e.

Second embodiment

FIG. 2a is a longitudinal section through a cooling element according to a second embodiment of the invention; FIG. 2b is a cross-sectional view of the high temperature cooling section of the cooling element according to the second embodiment of the present invention; FIG. 2c is another cross-sectional view of the high temperature cooling section of the cooling element according to the second embodiment of the present invention; fig. 2d is a cross-sectional view of a subcooling section of a cooling element according to a second embodiment of the invention. The structure of this embodiment is similar to that of the first embodiment, and the same parts as those of the first embodiment are not described again in the description of this embodiment.

As shown in fig. 2a to 2c, the cooling element 300 comprises a high temperature cooling section 324 and a low temperature cooling section 323. In the aerosol-emitting device to which the cooling element 300 according to the present embodiment is applied, the aerosol generated in the aerosol-emitting device flows in from the end of the high-temperature cooling section 324 of the cooling element 300 and escapes from the end of the low-temperature cooling section 323.

As shown in fig. 2b, the high temperature cooling section 324 of the cooling element 300 has a cooling element through hole 330 that axially penetrates the high temperature cooling section 324. The high temperature cooling section 324 is provided as a hollow structure in which the cooling element passage hole 330 has a circular cross section, and the cross section thereof has a circular ring shape. As shown in fig. 2c, the high temperature cooling section 324 of the cooling element 300 may be a hollow structure with a star-shaped cross section of the cooling element through hole 330, and the cross section of the cooling element through hole is a star-shaped ring, that is, the cross section of the inner hole of the hollow structure may be a pentagram, a hexagon, or the like.

The high-temperature cooling section 324 is of a hollow structure, so that resistance of the high-temperature cooling section 324 when the aerial fog penetrates can be reduced, the high-temperature aerial fog passes through the cooling element through hole 330 with low air resistance, and the temperature of the aerial fog is rapidly reduced when the inner surface of the cooling element through hole 330 is in contact with the high-temperature aerial fog. When the high-temperature aerosol mainly passes through the cooling element through hole 330, the distance between the periphery of the high-temperature cooling section 324 and the high-temperature aerosol is far away, and the temperature is reduced to a lower temperature when being transmitted to the periphery, so that the peripheral wall of the high-temperature cooling section 324 is prevented from being deformed or damaging the structure and the performance of the aerosol bomb due to high temperature.

As shown in fig. 2d, the low-temperature cooling section 323 in this embodiment is of a non-hollow structure, and when the aerosol penetrates through the low-temperature cooling section 323, sufficient contact and heat exchange are performed, so that the temperature of the aerosol when the aerosol escapes from the end of the low-temperature cooling section 323 is reduced to below 60 ℃. Part of glycerin and water in the gas fog are condensed into liquid in the low-temperature cooling section 323 and then are absorbed by the low-temperature cooling section 323, so that the gas fog becomes dry, and a user can perceive lower temperature.

In this embodiment, the high temperature cooling section 324 is made by bonding bicomponent fiber 2 with sheath-core structure, the sheath layer 21 of the bicomponent fiber 2 is poly-L-lactic acid, and the core layer 22 is PET.

In this embodiment, it is preferred that the cryogenically cooled section 323 includes a first polymer that undergoes a phase change endotherm in the range of 35 ℃ to 70 ℃, and the first polymer is also capable of undergoing a phase change endotherm in the range of 70 ℃ to 140 ℃. For example, the low-temperature cooling section 323 is formed by block-copolymerizing poly D, L-lactic acid having a melting point of, for example, 120 ℃ or 135 ℃ with polyethylene glycol having a molecular weight of 1500, making a film, and folding the film, and the poly lactic acid absorbs heat at a temperature of 35 to 70 ℃.

Since the condensate can dissolve part of the aldehydes and phenols, the inhalation of harmful aldehydes and phenols by the user can be reduced after the condensate is adsorbed by the cooling member 300. In the low-temperature cooling section 323 of the cooling element 300 of this embodiment, 1-3% of triacetin or a mixture of triacetin and cellulose acetate fibers is added to reduce the content of phenols in the aerosol.

Third embodiment

FIG. 3a is a longitudinal cross-sectional view of a third disclosed embodiment of an aerosol container; FIG. 3b is a cross-sectional view of the high temperature cooling section of the cooling element in a third embodiment of the disclosed invention.

The cooling element 300 of the present embodiment includes a high temperature cooling section 324 and a low temperature cooling section 323, and preferably the high temperature cooling section 324 has a cooling element through hole 330 axially penetrating the high temperature cooling section 324. The high temperature cooling section 324 is preferably configured as a hollow structure with a circular cross section of the cooling element through hole 330, as shown in fig. 3b, and the cross section thereof is circular ring.

The cooling element 300 may include a high temperature cooling section 324 and a low temperature cooling section 323, such as making the high temperature cooling section 324 from a film, fiber or nonwoven fabric including polylactic acid and PET, and making the low temperature cooling section from a film, fiber or nonwoven fabric including polylactic acid and low melting co-PET. The cryogenic cooling section 323 can also be made solely of polylactic acid.

The high-temperature aerial fog passes through the cooling element through hole 330 with low air resistance, and when the inner surface of the cooling element through hole 330 is contacted with the high-temperature aerial fog, the polymer absorbs a large amount of heat from the high-temperature aerial fog to be melted, so that the temperature of the aerial fog is rapidly reduced. But because the periphery of high temperature cooling section is far away from high temperature aerial fog, the temperature is lower to avoid the periphery wall of high temperature cooling section to take place deformation and damage the structure or the performance of aerial fog bullet.

The high temperature cooling section 324 of the cooling element 300 in this embodiment is made of bicomponent fibers 2 bonded together, with the sheath layer 21 of the bicomponent fibers 2 being poly D, L lactic acid with a melting point of about 135 ℃ and the core layer 22 being poly L-lactic acid with a melting point of about 165 ℃. Since the high-temperature mist passes through the cooling member through-hole 330 having a low gas resistance, when the inner surface of the cooling member through-hole 330 contacts the high-temperature mist, a part of the polymer absorbs heat from the high-temperature mist and melts, so that the temperature of the mist is rapidly lowered. However, the outer periphery of the high-temperature cooling section 324 is far away from the high-temperature aerosol, and the temperature is low, so that the outer peripheral wall of the high-temperature cooling section 324 is prevented from being deformed to damage the structure or performance of the aerosol bomb. The bicomponent fiber 2 of the high temperature cooling section 324 is made, if PET is used as the core layer 22 and polylactic acid with a melting point of 165 ℃ is used as the skin layer 21, the high temperature cooling section 324 has better temperature resistance. The high temperature cooling zone 324 of this example may be a polylactic acid having a DSC profile as shown in FIG. 1d or FIG. 1 e.

The low temperature cooling section 323 is made of polylactic acid filaments or staple fibers, and the DSC profile of the polylactic acid fibers of the low temperature cooling section 323 is shown in fig. 1 e. The cryocooling section 323 can also be made by rolling or folding a polylactic acid film and the DSC profile of the polylactic acid is shown in figure 1 e. The low temperature cooling section 323 may also be made of a polylactic acid nonwoven fabric or a polylactic acid nonwoven fabric bonded at a contact point portion. In this embodiment, 1-3% triacetin or a mixture of triacetin and cellulose acetate fibers may be added to the cryogenic cooling section 323 to reduce the phenolic content of the aerosol.

Polyethylene, polypropylene, or co-PET fibers having a melting point of about 110 c may be added to the high temperature cooling section 324 or the low temperature cooling section 323 to enhance the cooling effect. Polyethylene glycol or polyethylene oxide may also be doped in the cryogenic cooling section 323 to increase the cooling effect. The cryogenic cooling section 323 can also be made by rolling or folding a polyethylene glycol or polyethylene oxide coated film.

Fourth embodiment

FIG. 4a is a longitudinal cross-sectional view of a fourth embodiment of the disclosed aerosol bomb; as shown in fig. 4a, the structure of this embodiment is similar to that of the third embodiment, and the parts that are the same as those of the third embodiment are not described again in this embodiment. The difference is that the cooling element of the present embodiment is separated from the aerosol substrate 891 by a spacer 897, and the spacer 897 is made of cellulose fiber, paper tube or cellulose acetate fiber into a hollow structure with a star-shaped cross section, as shown in fig. 4b, the cross section of the hollow structure is a star-shaped ring, that is, the cross section of the inner hole of the hollow structure may be a pentagram-shaped, a hexagon-shaped, or the like.

The cooling element 300 of the present embodiment is made by curling a PET film coated with polyethylene glycol or polyethylene oxide, or may be made by copolymerizing blocks of polylactic acid and polyethylene glycol and making a film curl.

The cartridge 800 of this embodiment also includes a mouthpiece 898, the mouthpiece 898 being made of cellulose acetate fiber.

In summary, the aerosol bomb with the cooling element of the present invention can effectively reduce the temperature of the aerosol at the inlet to about 60 ℃ or below, and the cooling element comprises a material with a large specific surface area, which is beneficial for the contact and heat exchange between the aerosol and the polymer of the cooling element 300, and meanwhile, the cooling element has a good surface adsorption effect on the condensate generated during the aerosol cooling, so that the aerosol becomes dry, and the user can perceive a low temperature.

The cooling element of the invention can be applied to various aerosol projectiles, such as aerosol projectiles containing essence, aerosol projectiles containing nicotine, aerosol projectiles containing gasifiable traditional Chinese medicine components and the like. The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes be made by those skilled in the art without departing from the spirit and technical spirit of the present invention, and be covered by the claims of the present invention.

Claims

1. A cooling element for cooling an aerosol generated in an aerosol bomb, characterised in that the cooling element (300) comprises a first polymer which absorbs heat in a phase change in the range of 35 ℃ to 70 ℃.

2. A cooling element according to claim 1, characterized in that the cooling element (300) further comprises a second polymer which absorbs heat in a phase change in the range of 70 ℃ to 140 ℃.

3. A cooling element according to claim 1 or 2, wherein the polymer comprises polylactic acid or a copolymer of polylactic acid.

4. The cooling element of claim 1, wherein the polymer comprises polyethylene glycol or polyethylene oxide.

5. A cooling element according to claim 1, characterized in that the polymer in the cooling element (300) does not exhibit a significant exotherm of phase change in the range of 80 ℃ to 120 ℃ when the temperature is raised.

6. The cooling element according to claim 1, characterized in that the cooling element (300) comprises a high temperature cooling section (324) and a low temperature cooling section (323).

7. A cooling element according to claim 1, characterized in that triacetin, triethyl citrate, low molecular weight glycol or a mixture of triacetin and cellulose acetate fibres is added to the cooling element (300).

8. A cooling element according to claim 1, characterized in that mint, natural or synthetic flavors are added to the cooling element (300).

9. A cooling element according to claim 1, characterized in that the cooling element (300) comprises a film, a fibre, a bonded fibre, a non-woven or a non-woven bonded at the contact point part.

10. A cooling element as claimed in claim 9, characterized in that the film comprises a polymer which absorbs heat in a phase change in the range from 35 ℃ to 70 ℃.

11. A cooling element according to claim 9, characterized in that the membrane comprises a support layer which does not melt at 180 ℃.

12. The cooling element of claim 9, wherein the fibers, the binder fibers, the nonwoven fabric, or the nonwoven fabric bonded at the contact points are monocomponent fibers or bicomponent fibers, and the fibers include a polymer that absorbs heat from a phase change in a range of 35 ℃ to 70 ℃.

13. The copolymer of polylactic acid according to claim 3, which comprises a block copolymer of polylactic acid with polyethylene glycol or polypropylene glycol or poly (ethylene glycol-propylene glycol).

14. An aerosol bullet with a cooling element, characterized in that the aerosol bullet (800) has an aerosol substrate (891) and a cooling element (300) according to any one of claims 1 to 13.

15. The aerosol bomb according to claim 14, characterised in that the aerosol-substrate in the aerosol bomb (800) and the cooling element (300) are adjacent or separated by a spacer element (897).

16. The aerosol cartridge of claim 1, wherein the aerosol cartridge (800) includes an outer casing (899).

17. The aerosol bomb according to claim 14, characterised in that the aerosol bomb (800) comprises a mouthpiece (898).