CN115777988A

CN115777988A - Hollow filter stick with functional strip on inner wall and preparation method thereof

Info

Publication number: CN115777988A
Application number: CN202211440101.1A
Authority: CN
Inventors: 汪军; 雷萍; 吴恒; 朱东来; 龚为民; 尚善斋; 杜超; 林国; 肖永银; 秦云华
Original assignee: China Tobacco Yunnan Industrial Co Ltd
Current assignee: China Tobacco Yunnan Industrial Co Ltd
Priority date: 2022-11-17
Filing date: 2022-11-17
Publication date: 2023-03-14

Abstract

The invention discloses a hollow filter stick with functional strips on the inner wall and a preparation method thereof, wherein the hollow filter stick comprises a filter stick main body (1), an axially extending hollow channel (3) is arranged in the filter stick main body (1), and the functional strips (2) extending along the inner wall of the filter stick main body (1) are arranged in the hollow channel (3). According to the invention, the aroma-increasing gel strip is directly arranged on the inner surface of the hollow channel, so that the smoke in the hollow channel can be more effectively supplemented with aroma, and the overflow of aroma-adding substances is more sufficient. The rigid rod with the hollow cavity and the glue applying opening is designed, the complex step of additionally coating or spraying the aroma-enhancing substances on the inner surface of the hollow cavity is omitted, the gel-like aroma strips are directly formed on the inner surface of the hollow channel of the hollow filter stick while the hollow filter stick is bundled to form a hollow cavity, the special aroma-enhancing process is not needed, and the step is simple.

Description

Hollow filter stick with functional strip on inner wall and preparation method thereof

Technical Field

The invention relates to the field of cigarette filter stick preparation, in particular to a hollow filter stick with functional strips on the inner wall and a preparation method thereof.

Background

With the emphasis of consumers on health problems and the improvement of the demand on the personalized experience of cigarette products, the tobacco industry continuously responds to the demand upgrade of consumers and develops various smoking products with tar and harm reduction. Wherein, the heating cigarette is different from the traditional cigarette product in the cigarette heating mode, so that the cigarette can provide healthier smoking experience while meeting the sensory requirements of consumers on the cigarette product.

The existing aerosol generating product comprises a smoking section, a supporting section, a cooling section and a filtering section, wherein the supporting section, the cooling section and the filtering section can all use tow-shaped filter sticks, usually acetate tow filter sticks (acetate fibers are hereinafter referred to as acetate fibers for short), and can filter harmful ingredients in smoke. The solid filter stick has the characteristic of high interception rate, the interception rate of smoke needs to be reduced in the design of heating cigarettes, and a better method in the industry is to make the filter stick into a hollow filter stick.

At present, the production of hollow filter sticks basically adopts the mode that a rigid rod is additionally arranged at the rear end of a horn mouth of a conventional filter stick forming machine for converging, so that a hollow structure is formed at the position occupied by the rigid rod after acetate fiber tows are converged.

With the continuous upgrading of cigarette flavoring technology, each section of the cigarette gradually has flavoring requirements, and particularly for the novel tobacco product heating cigarette, the supporting section is usually an acetate fiber hollow filter stick. The section is close to a heat source, the smoke temperature is higher than that of a lip-end acetate fiber filtering section, and the aromatic substances are more easily volatilized and released, so that the aromatic substances have a good application prospect in perfuming the hollow filter stick used for the supporting section.

As for the existing hollow filter stick processing technology, the available flavoring modes are few, and the existing hollow filter stick processing technology mainly comprises the following steps: 1. adding soluble essence into plasticizer to increase fragrance; 2. adding granular perfume into acetate fiber before bundling and gathering; 3. directly soaking the molded hollow filter stick in an aroma-enhancing substance to adsorb the aroma-enhancing substance; 4. and additionally coating or spraying an aroma-enhancing substance on the inner surface of the hollow cavity of the molded hollow filter stick. The first of the above methods has the disadvantages that: 1. only the flavor which is compatible with the triacetin can be selected, and the selection range of the essence flavor is narrow. 2. The perfumed glyceryl triacetate will circulate throughout the system, causing a troublesome change of the perfuming formulation and requiring thorough cleaning of the entire plasticizer application system. 3. The flavoring substance and the acetate fiber are integrated, namely the flavoring substance is dispersed in the filter stick main body, and when smoke passes through the filter stick main body, the smoke preferentially passes through the hollow channel with small suction resistance, so that the overflow of the flavoring substance is possibly insufficient. The disadvantages of the second method are: 1. a separate set of particulate flavor application system is required, which is costly to retrofit. 2. After being dampened by condensed water, the granular spice can be adhered to the whole forming channel, and the efficiency and the stability of the equipment are seriously influenced. 3. In addition, the perfuming substance and the acetate fiber are integrated, and smoke preferentially passes through the hollow channel with small suction resistance when passing through the hollow channel, so that the perfuming substance can not overflow sufficiently. The third method also has the problem that the flavoring substance is dispersed in the filter stick main body, and because the hollow cavity of the hollow filter stick is an airflow channel for the circulation of smoke, the smoke can preferentially pass through the hollow cavity, so that the flavoring effect of the flavoring substance for the smoke after the hollow filter stick is soaked integrally is not good, and the flavoring in the hollow channel is basically expected. Aiming at specially flavoring the hollow channel of the hollow filter stick, the fourth method for independently coating or spraying the flavoring substances has complicated steps and increases the cost.

In summary, it is a problem to be solved how to more simply arrange the fragrance-increasing layer on the inner surface of the hollow channel.

The present invention has been made to solve the above problems.

Disclosure of Invention

According to the invention, the aroma-increasing gel strip is directly arranged on the inner surface of the hollow channel, so that the smoke in the hollow channel can be effectively supplemented with aroma, and the overflow of aroma-increasing substances is sufficient. The rigid rod with the hollow cavity and the glue applying opening is designed, the complex step of additionally coating or spraying the aroma-enhancing substances on the inner surface of the hollow cavity is omitted, the gel-like aroma strips are directly formed on the inner surface of the hollow channel of the hollow filter stick while the hollow filter stick is bundled to form a hollow cavity, the special aroma-enhancing process is not needed, and the step is simple.

The invention provides a hollow filter stick with functional strips on the inner wall, which comprises a filter stick main body 1, wherein a hollow channel 3 extending axially is arranged in the filter stick main body 1, and the functional strips 2 extending along the inner wall of the filter stick main body 1 are arranged in the hollow channel 3. The hollow channel 3 is an air flow channel for the circulation of flue gas.

Preferably, the hollow channel 3 extends axially through the filter plug body 1. That is, the hollow channel 3 may extend only partially along the filter plug body 1, or may extend entirely through the filter plug body 1.

Preferably, the functional strip 2 extends axially and through the hollow channel 3. That is, the functional band 2 may extend only partially along the inner wall of the filter plug body 1, or may entirely penetrate the filter plug body 1.

Preferably, the functional strip 2 is a gel-like spice strip, wherein the gel-like spice is selected from essence spice materials commonly used in the field, such as mint essence and blueberry essence, more preferably, the gel spice also has a certain cooling function, and has a certain heat absorption effect in the heating and fragrance releasing process, even a plurality of components for improving the heat absorption performance of the gel spice can be added in the formula of the gel spice, so that the gel spice has a certain cooling function after fragrance increasing, and can be matched with a cooling section to play a better cooling effect in heating and burning cigarettes, and even can be cancelled when the gel spice achieves a better cooling effect. In addition, a certain amount of smoke agent can be added into the gel-like spice strip, so that the smoke amount of the strip can be increased while the aroma is increased.

Preferably, said hollow passages 3 are one or more; at least one of the hollow channels 3 has the functional strip 2 therein. The plurality of hollow passages 3 may be uniformly or randomly dispersed in the filter plug body 1. It is of course more preferable that when there is one hollow passage 3, it is located at the axial center, and when there are a plurality of hollow passages 3, one hollow passage 3 is provided at the axial center, and the remaining hollow passages 3 are dispersed around the hollow passage 3, and the diameters of the plurality of hollow passages 3 are not limited to a size.

Preferably, at least one functional strip 2 is arranged in the hollow channel 3. That is, one or more functional strips 2 can be arranged in one hollow channel 3, and when a plurality of functional strips 2 are arranged in one hollow channel 3, the functional strips 2 can be uniform or can be randomly dispersed.

In a second aspect, the present invention provides an aerosol generating article comprising a hollow filter rod according to the first aspect of the invention having functional rods on the inner wall. The hollow filter rod of the present invention may be a support, cooling or filter segment of an aerosol generating article, wherein it is more preferably directly as a support segment. Because the supporting section is close to the smoking section and the temperature is high, the fragrant components can be fully released; and the hollow structure perfectly meets the requirement of heating cigarettes by using low-interception filter rods.

The third aspect of the invention provides a method for preparing a hollow filter stick with a functional strip on the inner wall, which comprises the following steps:

A. a rigid rod 11 is arranged at a closing port of the filter stick forming machine, a hollow chamber 12 is arranged inside the rigid rod 11, and a glue applying port 13 and a glue inlet 14 which are communicated with the hollow chamber 12 are arranged on the outer wall of the rigid rod 11;

B. filling the hollow chamber 12 with functional substances;

C. and (3) operating a filter rod bundling process, wherein the rigid rod 11 occupies a hollow position in the filter rod bundling process to form the hollow channel 3, and meanwhile, the functional substance in the hollow chamber 12 flows out of the glue applying opening 13 and forms the functional strip 2 on the inner wall of the filter rod main body 1.

Preferably, said rigid bars 11 are one or more. The number of said rigid rods 11 corresponds to the number of hollow channels 3. Furthermore, when a certain hollow channel 3 does not have the functional strip 2 therein, the rigid rod 11 corresponding to the hollow channel 3 does not need to be provided with a cavity chamber, and does not need to be provided with a glue applying opening.

Preferably, the sizing port 13 may be located at any position of the rigid rod 11, both upstream and downstream. The different positions of the glue application openings 13 allow for an extended length of the functional strip 2. It is of course more preferred that the applicator 13 is located downstream of the rigid rod 11, with the functional strip 2 extending axially through the hollow filter rod.

Preferably, one or more glue applying openings 13 are provided. The number of said glue application openings 13 corresponds to the number of functional strips 2. That is to say, the positions and the number of the glue applying openings 13 are not fixed, so that when a plurality of functional strips 2 exist, parts of the functional strips only partially extend along the inner wall of the filter stick body 1, and parts of the functional strips completely penetrate through the filter stick body 1.

The glue inlet 14 is usually one, but may be provided in plurality.

The glue inlet 14 is communicated with the external glue barrel, the pump and the cavity chamber, so that functional substances in the glue barrel can be filled into the cavity chamber through the pump, and therefore, in the process of bundling the acetate fiber tows, the inner wall of the hollow filter rod is coated with the aroma-enhancing gel strip uninterruptedly.

Compared with the prior art, the invention has the following beneficial effects:

1. the hollow cavity of the hollow filter stick is an airflow channel for the circulation of smoke, and the smoke can preferentially pass through the hollow cavity, so that the whole flavoring effect of the hollow filter stick on the smoke is not good.

2. The rigid rod with the hollow cavity and the glue applying opening is designed, the complex step of additionally coating or spraying the aroma-enhancing substances on the inner surface of the hollow cavity is omitted, the gel-like aroma strips are directly formed on the inner surface of the hollow channel of the hollow filter stick while the hollow filter stick is bundled to form a hollow cavity, the special aroma-enhancing process is not needed, and the step is simple.

3. When the spice formulas with different flavor characteristics are replaced, only the cavity chamber of the rigid rod needs to be cleaned, and the replacement is not related to other parts of equipment and is convenient.

4. The flavoring of the hollow filter stick can be finished only by adding the rigid stick on the conventional filter stick bundling equipment, and the equipment modification cost is low and the efficiency is high.

5. Compared with the perfuming method of adding soluble essence into the plasticizer, the perfume of the invention has wide selection range, and only needs to be filled into the hollow chamber of the rigid rod. Compared with the perfuming method for adding the granular perfume into the acetate fiber before bunching, the perfuming method disclosed by the invention overcomes the defect that the granular perfume is adhered to the whole forming channel after being subjected to moisture regaining by condensed water, so that the efficiency and the stability of equipment are influenced.

Drawings

FIG. 1 is a schematic structural diagram of a hollow filter stick with functional strips on the inner wall in example 1;

FIG. 2 is a schematic perspective view of a hollow filter stick with functional strips on the inner wall in example 1;

FIG. 3 is a schematic perspective view (perspective view) of a hollow filter stick with functional strips on the inner wall in example 1;

FIG. 4 is a schematic view of the structure of the rigid rod of example 1;

FIG. 5 is a schematic view (perspective view) of the rigid rod structure of example 1;

FIG. 6 is a schematic structural diagram of a hollow filter stick with a functional strip on the inner wall in example 2;

fig. 7 is a schematic structural diagram (perspective view) of a hollow filter stick with a functional strip on the inner wall in example 2;

FIG. 8 is a schematic view of the structure of the rigid rod of example 2;

fig. 9 is a schematic view (perspective view) of the structure of the rigid rod of example 2.

Names of reference symbols in the description of the drawings: 1-filter stick main body, 2-functional strip, 3-hollow channel, 11-rigid stick, 12-cavity chamber, 13-glue applying opening, 14-glue inlet.

Detailed Description

The present invention will be described in further detail with reference to examples.

It will be appreciated by those skilled in the art that the following examples are illustrative of the invention only and should not be taken as limiting the scope of the invention. Those skilled in the art will recognize that the specific techniques or conditions, not specified in the examples, are according to the techniques or conditions described in the literature of the art or according to the product specification. The materials or equipment used are not indicated by manufacturers, and all are conventional products available by purchase.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Further, "connected" as used herein may include wirelessly connected.

In the description of the present invention, "a plurality" means two or more unless otherwise specified. The terms "inner," "upper," "lower," and the like, refer to an orientation or a state relationship based on that shown in the drawings, which is for convenience in describing and simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "provided" are to be construed broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. To those of ordinary skill in the art, the specific meanings of the above terms in the present invention are understood according to specific situations.

It will be understood by those skilled in the art that, unless otherwise defined, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further 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 prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Example 1

As shown in fig. 1-3, the present embodiment is a hollow filter stick with only one hollow channel inside, and the specific structure is as follows: the hollow filter stick comprises a filter stick main body 1, wherein an axially extending hollow channel 3 is arranged in the filter stick main body 1, and a functional strip 2 extending along the inner wall of the filter stick main body 1 is arranged in the hollow channel 3. The hollow channel 3 is an air flow channel for the circulation of flue gases.

The hollow channel 3 axially penetrates through the filter stick body 1. The functional strip 2 extends axially and through the hollow channel 3. The functional strip 2 is a gel-like spice strip. The gel-like flavoring is selected from peppermint essence.

The hollow passage 3 is one, which is located at the axial center. Three functional strips 2 are arranged in the hollow channel 3.

The hollow filter rod acts directly as a support section for the aerosol-generating article.

As shown in fig. 4-5, the preparation method of the hollow filter stick comprises the following steps:

B. filling the hollow chamber 12 with functional substances;

C. and (3) operating a filter rod bundling process, wherein the rigid rod 11 occupies a hollow position in the filter rod bundling process to form the hollow channel 3, and meanwhile, the functional substance in the hollow chamber 12 flows out from the glue application port 13 and forms the functional strip 2 on the inner wall of the filter rod main body 1.

The rigid bar 11 is one.

The number of the glue applying openings 13 is three.

In the embodiment, the downstream end of the rigid rod is provided with a plurality of glue applying ports 13 capable of uniformly pumping out the flavoring gel and a glue inlet 14 connected with an external glue barrel and a pump, and the inner wall of the hollow filter rod is coated with the flavoring gel strip uninterruptedly in the process of converging the acetate fiber tow.

Example 2

As shown in fig. 6 to 7, the present embodiment is a hollow filter stick with five hollow channels inside, and the specific structure is as follows: the hollow filter stick comprises a filter stick main body 1, wherein an axially extending hollow channel 3 is arranged in the filter stick main body 1, and a functional strip 2 extending along the inner wall of the filter stick main body 1 is arranged in the hollow channel 3. The hollow channel 3 is an air flow channel for the circulation of flue gas.

The number of the hollow passages 3 is five, one hollow passage 3 is provided at the axial center, and the remaining four hollow passages 3 are dispersed around the hollow passage 3, and the diameter of the hollow passage 3 at the center is slightly larger and the diameters of the surrounding four hollow passages 3 are slightly larger. Which is located at the axial center. Three functional strips 2 are arranged in the hollow channel 3 at the center, and the functional strips 2 are not arranged in the four surrounding hollow channels 3, so that the aim of the method is to circulate smoke only.

As shown in fig. 8 to 9, the preparation method of the hollow filter stick comprises the following steps:

B. filling the hollow chamber 12 with functional substances;

The number of the rigid rods 11 is five.

The number of the glue applying openings 13 is three, and only the central rigid rod 11 is provided with the glue applying openings 13.

In the embodiment, the downstream end of the rigid rod is provided with a plurality of glue applying ports 13 capable of uniformly pumping out the aroma-enhancing gel and a glue inlet 14 connected with an external glue barrel and a pump, and in the process of bundling the acetate fiber tows, the inner wall of the hollow filter stick is coated with the aroma-enhancing gel strips uninterruptedly.

Claims

1. The hollow filter stick is characterized by comprising a filter stick main body (1), wherein a hollow channel (3) extending axially is formed in the filter stick main body (1), and a functional strip (2) extending along the inner wall of the filter stick main body (1) is arranged in the hollow channel (3).

2. A hollow filter rod with a functional strip on the inner wall according to claim 1, characterized in that the hollow channel (3) axially penetrates the filter rod body (1).

3. A hollow filter rod with a functional strip on the inner wall according to claim 1, characterized in that the functional strip (2) extends axially and penetrates the hollow channel (3).

4. The hollow filter stick with the functional strip on the inner wall according to claim 1, characterized in that the functional strip (2) is a gel-like spice strip.

5. The hollow filter stick with the functional strip on the inner wall according to claim 1, characterized in that the hollow channel(s) (3) is (are) one or more;

at least one of the hollow channels (3) has the functional strip (2) therein.

6. The hollow filter stick with the functional strip on the inner wall according to claim 5, characterized in that at least one functional strip (2) is arranged in the hollow channel (3).

7. An aerosol generating article comprising a hollow filter rod having functional rods on the inner wall thereof according to any one of claims 1 to 6.

8. A method for preparing a hollow filter stick with a functional strip on the inner wall according to any one of claims 1 to 6, which is characterized by comprising the following steps:

A. a rigid rod (11) is arranged at a closing port of the filter stick forming machine, a cavity chamber (12) is arranged inside the rigid rod (11), and a glue applying port (13) and a glue inlet (14) which are communicated with the cavity chamber (12) are arranged on the outer wall of the rigid rod (11);

B. filling the hollow chamber (12) with functional substances;

C. and (3) operating a filter stick bundling process, wherein the rigid stick (11) occupies a hollow position in the filter stick bundling process to form the hollow channel (3), and meanwhile, the functional substance in the hollow chamber (12) flows out from the glue applying opening (13) and forms a functional strip (2) on the inner wall of the filter stick main body (1).

9. The method for the preparation according to claim 8, characterized in that said rigid bars (11) are one or more.

10. The method of claim 8, wherein one or more of the sizing ports (13) are provided.