A filter rod with a multi-layer pore structure

Abstract

The present invention relates to the field of tobacco products, and in particular to a novel filter rod with a multi-layer pore structure. The filter rod comprises an embossed structure layer and a forming paper layer, wherein the embossed structure layer comprises a segment A substrate, a segment B substrate, a segment E substrate, and a segment D substrate, which are arranged in a circular pattern in sequence, and finally connected end to end to form a structure with a gear-like cross section, and the forming paper layer is wrapped on the outermost side of the embossed structure layer. The multi-layer pore filter rod of the present invention has a novel structure, increases the smoke diffusion path, and reduces the smoke temperature.

Description

Technical Field

[0001] The present invention relates to the field of tobacco products, in particular to a filter rod with a multi-layer pore structure. Background Art

[0002] Currently, filter rods are mostly made of acetate tow, which primarily serves to reduce tar and harm. In recent years, with the continuous development of heat-not-burn cigarettes, people have become more and more aware of them, and personalized demands have also increased. Heat-not-burn cigarette structures and varieties are becoming increasingly diverse. Heat-not-burn cigarettes generally include a smoke-generating section, a cooling section, and a near-lip section. The smoke-generating section is primarily used to produce the smoke volume and aroma of cigarettes without burning during heating. The cooling section is primarily used to prevent overheating of the smoke, which would adversely affect the quality of smoking. The near-lip section is also known as the filter section. Existing filter rods have a poor cooling effect, resulting in a relatively poor smoking experience, such as excessively hot smoke, insufficient smoke aroma, strong irritation, and an unpleasant aftertaste. Summary of the Invention

[0003] The present invention aims to provide a new filter rod with a multi-layer pore structure. The filter rod has a novel structure and can be used in the cooling section and near-lip section of cigarettes. The structure of the invention can increase the smoke diffusion path, effectively reduce the smoke temperature, and at the same time ensure the smoke fragrance. The process of the present invention can realize the combined use of multiple materials, providing multiple designs for the diverse design of products.

[0004] In order to achieve the above object, the present invention specifically adopts the following technical solutions:

[0005] A filter rod with a multi-layer pore structure includes an embossed structure layer and a forming paper layer. The embossed structure layer includes a segment A substrate, a segment B substrate, a segment E substrate, and a segment D substrate, which are arranged in a circular pattern and finally connected end to end to form a structure with a gear-like cross-section. The forming paper layer is wrapped around the outermost side of the embossed structure layer.

[0006] Preferably, the embossed structure layer is multi-layered, and the embossed structure layers of two adjacent layers have the following relationship:

[0007] The two endpoints e and d of the cross section of the substrate in the section A of the outer embossed structural layer correspond to the two endpoints a and b of the cross section of the substrate in the section E1 of the inner structural layer;

[0008] The two end points d and e1 of the substrate of two adjacent sections A of the outer embossed structure layer are close to each other, corresponding to the two end points b and a1 of the substrate of two adjacent sections E1 of the inner embossed structure layer.

[0009] Preferably, the embossed structure layer consists of three layers, the innermost layer is selected from tobacco sheets, the middle layer is selected from polymer degradable film materials, and the outermost layer is selected from aluminum foil paper.

[0010] Preferably, the embossed structure layer is selected from ordinary paper, tobacco sheets, polymer degradable film or aluminum foil. When the embossed structure layer is multi-layered, the material of each embossed structure layer can be the same or different.

[0011] Preferably, the polymer degradable film material is selected from heat-absorbing silica gel, heat-absorbing gel, polylactic acid cooling film or heat-absorbing resin.

[0012] Preferably, the embossed structural layer is selected from 40g / m2 to 150g / m2 ordinary paper, 40g / m2 to 250g / m2 tobacco sheets, 40g / m2 to 200g / m2 polymer degradable film or 40g / m2 to 250g / m2 aluminum foil.

[0013] Preferably, the embossed structure layer has through holes.

[0014] Preferably, the segment B substrate, segment E substrate, and segment D substrate are combined to form a structure with an isosceles trapezoidal or quasi-isosceles fan-shaped cross section.

[0015] Preferably, when the B segment substrate, E segment substrate, and D segment substrate are combined to form a structure with an isosceles fan-shaped cross-section, the E segment substrate has an arc cross-section, and the center of the arc coincides with the center of the gear-shaped structure. The forming paper layer surrounds the gear-shaped structure, and the structure surrounded by the forming paper layer is circular.

[0016] Preferably, when the embossed structural layer is an isosceles trapezoid, the structure surrounded by the forming paper layer is a polygon or a circle.

[0017] Beneficial effects

[0018] The filter rod of the present invention has a novel structure and can be used in the cooling section and near-lip section of a cigarette. It can increase the smoke diffusion path, effectively reduce the smoke temperature, and at the same time ensure the smoke fragrance. In addition, the process of the present invention can realize the combined use of multiple materials, providing multiple designs for the diverse design of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the unfolded embossed structural layer of the present invention.

[0020] Figure 2 Schematic diagram of an embossed structure layer formed by connecting the embossed structure layers end to end according to the present invention.

[0021] Figure 3 Schematic diagram of the outer layers of two adjacent layers when the embossed structure is multi-layer.

[0022] Figure 4 Schematic diagram of the inner layers of two adjacent layers when the embossed structure is multi-layer.

[0023] Figure 5 Schematic diagram of the coordination of inner and outer layers in a multi-layer embossed structure.

[0024] Figure 6 Diagram of the structure of a filter rod with three embossed structural layers.

[0025] Figure 7 for Figure 6 Enlarged schematic diagram of part W.

[0026] Figure 8 Schematic diagram of the contact between the shaping paper and the raised portion of the outermost embossed structure layer when the shaping paper layer is polygonal.

[0027] Figure 9 A schematic diagram of a partial cross-section of the filter rod when segment E is an arc whose center coincides with the center of the gear-shaped structure. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0030] Unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. Technologies, methods and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods and apparatus should be considered part of the specification.

[0031] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0032] The present invention is described in detail below with reference to the accompanying drawings to facilitate those skilled in the art to understand the present invention.

[0033] like Figure 1 The figure shows the expanded structure of the embossed structure layer of the present invention. The A segment, B segment, E segment and D segment are connected in sequence and are all straight line segments. The B segment, E segment and D segment are enclosed into a shape with an open isosceles trapezoidal cross section. The expanded segments containing 8 trapezoids are connected end to end to form a Figure 2 The gear-shaped embossed structural layer shown can be directly wrapped with a layer of forming paper to form a filter rod.

[0034] Of course, the embossed structure layer can also be multi-layered, and the embossed structure layers of the adjacent two layers have the following characteristics: Figure 3 、 Figure 4 ,and Figure 5 The relationship shown is: the two end points e and d of the cross section of the substrate of segment A of the outer embossed structural layer correspond to the two end points a and b of the cross section of the substrate of segment E1 of the inner structural layer; the two end points d and e1 of the substrate of two adjacent segments A of the outer embossed structural layer are close to each other, corresponding to the two end points b and a1 of the substrate of two adjacent segments E1 of the inner embossed structural layer are close to each other. Figure 3 The outer layer of the embossed structure layer corresponds to the package Figure 4 The unfolded layer of the embossed structure layer is then formed Figure 5 The overlapping structure on the right side of the figure is shown. Then multiple layers are set up in a loop.

[0035] When the embossed structure layer is three layers, the structure is as follows Figure 6 shown.

[0036] like Figure 7 As shown, Figure 6 The enlarged diagram of part W shows that the embossed structure layer wrapped by the outermost layer of shaping paper finally forms a round filter rod. There is still a gap between the shaping paper layer and the trapezoidal protrusion of the outermost layer of embossed structure. The shaping paper can also be wrapped around the embossed structure layer to form a polygonal filter rod. In this case, there is no gap between the shaping paper layer and the trapezoidal protrusion of the outermost layer of embossed structure, as shown in the figure. Figure 8 shown.

[0037] Of course, the B-segment substrate, the E-segment substrate, and the D-segment substrate can also be combined to form a structure with an isosceles sector-shaped cross section. In this case, the E-segment substrate has an arc cross section, and the center of the arc coincides with the center of the gear-shaped structure. The shaping paper layer surrounds the gear-shaped structure, and the structure surrounded by the shaping paper layer is circular. In this case, the isosceles sector-shaped protrusions of the shaping paper layer and the outermost embossed structure layer are connected without any gaps, such as Figure 9 shown.

[0038] The embossed structure layer can be selected from ordinary paper, tobacco sheets, polymer degradable film or aluminum foil. When the embossed structure layer is multi-layered, the material of each embossed structure layer can be the same or different.

[0039] The polymer degradable film material is selected from heat-absorbing silica gel, heat-absorbing gel, polylactic acid cooling film or heat-absorbing resin.

[0040] It is more preferred that the embossed structural layer is selected from 40g / m2 to 150g / m2 ordinary paper, 40g / m2 to 250g / m2 tobacco sheets, 40g / m2 to 200g / m2 polymer degradable film or 40g / m2 to 250g / m2 aluminum foil.

[0041] Of course, a plurality of small through holes may be provided on the embossed structure layer, so that the smoke flow can diffuse not only longitudinally but also laterally.

[0042] Preferably, the embossed structure comprises three layers, the innermost layer being selected from tobacco sheets, the middle layer being selected from polymer degradable film, and the outermost layer being selected from aluminum foil. The inner layer being selected from tobacco sheets enhances flavor; the middle layer being selected from polymer degradable film enhances cooling; and the outer layer being selected from aluminum foil preserves flavor.

[0043] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A filter rod having a multi-layer pore structure, characterized in that: It comprises an embossed structure layer and a forming paper layer, wherein the forming paper layer is wrapped on the outermost side of the embossed structure layer; the embossed structure layer comprises a segment A substrate, a segment B substrate, a segment E substrate, and a segment D substrate which are arranged in a circular pattern in sequence and finally connected end to end to form a structure with a gear-shaped cross section, and the segment B substrate, the segment E substrate, and the segment D substrate are combined to form a structure with an isosceles trapezoid or an isosceles fan-shaped cross section; The embossed structure layer is multi-layer, and the embossed structure layers of two adjacent layers have the following relationship: The two end points e and d of the cross section of the substrate of the outer embossed structure layer A correspond to the inner structure layer E 1 The two end points a and b of the cross section of the substrate; The two adjacent segments A of the outer embossed structure layer have two end points d and e1 close to the substrate, corresponding to the two adjacent segments E of the inner embossed structure layer. 1 The two end points b and a1 of the segment substrate are close to each other; The embossed structure layer is selected from ordinary paper, tobacco flakes, polymer degradable film or aluminum foil, and the material of each embossed structure layer is different; The embossed structure layer has through holes.

2. The filter rod according to claim 1, characterized in that The embossed structure layer consists of three layers, the innermost layer is selected from tobacco sheets, the middle layer is selected from polymer degradable film materials, and the outermost layer is selected from aluminum foil paper.

3. The filter rod according to claim 1, characterized in that The polymer degradable film material is selected from heat-absorbing silica gel, heat-absorbing gel, polylactic acid cooling film or heat-absorbing resin.

4. The filter rod according to claim 1, characterized in that The embossed structural layer is selected from 40g / m2-150g / m2 ordinary paper, 40g / m2-250g / m2 tobacco flakes, 40g / m2-200g / m2 polymer degradable film materials or 40g / m2-250g / m2 aluminum foil paper.

5. The filter rod according to any one of claims 1 to 4, characterized in that: When the B-segment substrate, E-segment substrate, and D-segment substrate are combined to form a structure with an isosceles fan-shaped cross-section, the A-segment substrate and the E-segment substrate have arc cross-sections, and the center of the arc coincides with the center of the gear-shaped structure. The forming paper layer surrounds the gear-shaped structure, and the cross-section of the structure surrounded by the forming paper layer is circular.

6. The filter rod according to any one of claims 1 to 4, characterized in that: When the B-stage substrate, the E-stage substrate, and the D-stage substrate are combined to form a structure with an isosceles trapezoidal cross section, the cross section of the structure surrounded by the forming paper layer is a polygon or a circle.

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