Filter stick compression roller device and filter stick
By setting non-perpendicular convex and concave strips on the filter rod pressure roller device to form anisotropic texture, the problems of unstable suction resistance and low hardness in traditional filter rod pressure roller devices are solved, thereby improving the suction resistance stability and hardness of the filter rod.
Patent Information
- Application Number
- CN202422635655.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-10-30
AI Technical Summary
The paper rods and non-woven filter rods produced by traditional filter rod pressing roller devices have problems such as unstable suction resistance and low hardness, which limits their promotion and application.
Two opposing pressure rollers are used, each with alternating raised and recessed strips on its surface. The direction of the raised and recessed strips is not perpendicular to the axis of the pressure roller, forming anisotropic textures. This improves the uniformity of the overlap between the concave and convex parts when the paper or non-woven fabric is folded, and enhances the hardness and pressure resistance of the filter rod.
It improves the suction resistance stability and hardness of the filter rod, reduces suction resistance fluctuations, and enhances the overall performance of the filter rod.
Smart Images
Figure CN223515743U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of filter rod forming, and more particularly to a filter rod compression roller device and a filter rod. BACKGROUND
[0002] With the implementation of the EU plastic ban and the increasing concern of consumers about environmental and health issues, the research on green degradable filter rods in the tobacco industry continues to rise. Among them, paper rods and degradable non-woven filter rods have become the focus of research.
[0003] The traditional filter rod compression roller device for preparing filter rods has a ring-shaped distribution of the embossing on the compression roller in the radial direction. After the paper and non-woven fabric pass through the compression roller, vertical embossing is formed on the surface thereof. When the paper and non-woven fabric pass through the smoke gun, they are folded along the direction of the vertical embossing to form a filter rod. However, since the folding direction of the paper and non-woven fabric is the same as that of the vertical embossing when they pass through the smoke gun, and it is difficult to control the overlapping degree of the concave and convex parts of the vertical embossing during the folding process, such uneven overlapping degree will cause fluctuations in the suction resistance. If a large number of concave and convex parts overlap, the suction resistance of the filter rod will increase significantly, affecting the filtering effect. On the contrary, if the overlapping degree is small, it may lead to a decrease in the suction resistance of the filter rod, affecting its overall performance.
[0004] In addition, since the folding direction of the paper and non-woven fabric is the same as that of the vertical embossing when they pass through the smoke gun, the filter rod relies only on the rigidity in one direction when it bears external pressure, resulting in a low hardness of the filter rod.
[0005] In summary, the paper rods and non-woven filter rods prepared by the traditional filter rod compression roller device face the problems of unstable suction resistance and low hardness, which to a large extent limits their promotion and application.
[0006] Therefore, there is an urgent need for a filter rod compression roller device capable of preparing filter rods with good suction resistance stability and high hardness. CONTENT OF THE INVENTION
[0007] To solve the above technical problems, the present application provides a filter rod compression roller device and a filter rod processed by the filter rod compression roller device, which improves the stability of the suction resistance and the hardness.
[0008] The technical solutions provided by the present application are as follows:
[0009] A filter rod compression roller device comprises two oppositely arranged compression rollers, namely a first compression roller and a second compression roller. The surfaces of the first compression roller and the second compression roller are provided with a concave-convex structure. The concave-convex structure comprises alternating convex strips and concave strips. The directions of the convex strips and the concave strips are non-perpendicular to the axis of the compression roller.
[0010] The concave-convex structures of the first and second compression rollers are engaged with each other, and paper or non-woven fabric can be effectively transmitted under the rotation of the first and second compression rollers, and corresponding lines are formed on the surface thereof.
[0011] Further, the directions of the convex lines and the concave lines are parallel to the axis of the compression roller.
[0012] Further, the directions of the convex lines and the concave lines are along the slope of the compression roller, and the concave-convex structure comprises at least a group of concave-convex units, each of the concave-convex units is formed by a plurality of the convex lines and a plurality of the concave lines alternately, and two of the concave-convex units are symmetrically arranged.
[0013] Further, the symmetry axes of the two concave-convex units are perpendicular to the axis of the compression roller.
[0014] In another aspect, the application provides a filter rod comprising a hollow tube and a forming layer made of paper or non-woven fabric wrapped outside the hollow tube.
[0015] The surface of the forming layer has concave-convex embossing formed by the filter rod compression roller device according to any one of the above embodiments.
[0016] Further, the surface of the forming layer has concave-convex cross embossing formed by the filter rod compression roller device in which the directions of the convex lines and the concave lines are parallel to the axis of the compression roller.
[0017] Further, the surface of the forming layer has concave-convex cross embossing formed by the filter rod compression roller device in which the directions of the convex lines and the concave lines are parallel to the axis of the compression roller.
[0018] Further, the surface of the forming layer has concave-convex cross embossing formed by the filter rod compression roller device in which the directions of the convex lines and the concave lines are parallel to the axis of the compression roller.
[0019] Compared with the prior art, the filter rod compression roller device and the filter rod provided by the embodiments of the application have at least the following technical effects:
[0020] The filter rod roller device comprises two oppositely arranged rollers, namely a first roller and a second roller, and the surfaces of the first roller and the second roller are provided with concave-convex structures, the concave-convex structures comprise alternating convex strips and concave strips, the directions of the convex strips and the concave strips are arranged non-perpendicularly to the axes of the rollers, so that the paper or non-woven fabric forms corresponding lines on the surfaces after passing through the first roller and the second roller, and the folding direction of the paper or non-woven fabric is opposite to the surface lines in the subsequent process of passing through the cigarette gun, the overlapping uniformity of the concave part and the convex part of the paper or non-woven fabric during folding is improved, thereby reducing the fluctuation of the filter rod suction resistance and improving the stability of the suction resistance. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.
[0022] Figure 1 Structure diagram of vertical pressure lines on a filter rod in the prior art;
[0023] Figure 2 Structure diagram of a filter rod roller device in an embodiment of the present application;
[0024] Figure 3 Front view structure diagram of a filter rod roller device in another embodiment of the present application;
[0025] Figure 4 Structure diagram of concave-convex horizontal pressure lines on a filter rod in an embodiment of the present application;
[0026] Figure 5 Structure diagram of concave-convex mountain-shaped inclined pressure lines on a filter rod in an embodiment of the present application.
[0027] Reference signs:
[0028] 10, first roller; 20, second roller; 30, concave-convex structure; 301, convex strip; 302, concave strip; 401, concave-convex horizontal pressure line; 402, concave-convex mountain-shaped inclined pressure line; 4021, concave-convex mountain-shaped inclined pressure line unit; 403, vertical pressure line; 4031, concave part; 4032, convex part. DETAILED DESCRIPTION
[0029] In order for those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.
[0030] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.
[0031] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0032] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" or "several" is two or more, unless otherwise specifically limited.
[0033] It should be understood that the structures, proportions, sizes, etc. shown in the drawings of the present application are only used to cooperate with the content disclosed in the description, to enable those skilled in the art to understand and read, and do not have technical significance, and any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.
[0034] With the implementation of the EU plastic ban and the increasing concern of consumers about environmental and health issues, green degradable filter rods continue to rise in popularity in the tobacco industry. Among them, paper rods and degradable non-woven filter rods have become the focus of research.
[0035] The traditional filter rod pressing roller device for preparing filter rods has a embossing on the pressing roller, which is distributed in a ring shape along the radial direction of the pressing roller. After the paper and non-woven fabric pass through the pressing roller, vertical embossing 403 will be formed on the surface of the pressing roller (see Figure 1).Figure 1 As shown in the figure, when the paper and non-woven fabric pass through the cigarette gun, they will be folded along the direction of the vertical embossing 403 to form a filter rod. However, since the folding direction of the paper and non-woven fabric is the same as that of the vertical embossing 403 when they pass through the cigarette gun, and the degree of overlap of the concave part 4031 and the convex part 4032 of the vertical embossing 403 is difficult to control during the folding process, such uneven overlap degree will cause the fluctuation of the suction resistance. If a large number of concave parts 4031 and convex parts 4032 overlap, the suction resistance of the filter rod will increase significantly, affecting the filtering effect; on the contrary, if the degree of overlap is small, it may lead to a decrease in the suction resistance of the filter rod, affecting its overall performance.
[0036] In addition, since the folding direction of the paper and non-woven fabric is the same as that of the vertical embossing 403 when they pass through the cigarette gun, the filter rod relies only on the rigidity in one direction when it is subjected to external pressure, resulting in a lower hardness of the filter rod.
[0037] In summary, the paper rod and non-woven fabric filter rod prepared by the traditional filter rod pressing roller device face the problems of suction resistance stability and low hardness, which to a large extent limits their promotion and application.
[0038] In addition, a large number of previous studies have shown that by selecting different types of paper or non-woven fabric, the hardness of the paper rod and non-woven fabric filter rod can be improved to some extent, but there is still a certain gap with the acetate filter rod.
[0039] Based on the above problems, please refer to the accompanying Figure 2 As shown in the figure, the utility model provides a filter rod pressing roller device, including two opposite setting pressure roller, it is first pressure roller 10 and second pressure roller 20 respectively, the surface of first pressure roller 10 and second pressure roller 20 is provided with concave-convex structure 30, and concave-convex structure 30 includes the convex strip 301 and the concave strip 302 of alternate setting, and the direction of convex strip 301 and concave strip 302 is non-perpendicular with the axis of pressure roller;During the working process, the concave-convex structure 30 of first pressure roller 10 and the concave-convex structure 30 of second pressure roller 20 are mutually engaged, form a transmission channel, and the paper or non-woven fabric can be effectively transmitted under the rotation of first pressure roller 10 and second pressure roller 20, and the corresponding lines are formed on its surface. It needs to be further explained that the concave-convex structure 30 of first pressure roller 10 and the concave-convex structure 30 of second pressure roller 20 are mutually engaged, that is, the two pressure rollers can be closely matched, and the convex strip 301 of one pressure roller can be embedded into the concave strip 302 of the other pressure roller.
[0040] This embodiment utilizes a filter rod pressure roller device comprising two opposing pressure rollers, a first pressure roller 10 and a second pressure roller 20. Both the first pressure roller 10 and the second pressure roller 20 have a raised / lower surface structure 30, comprising alternating raised strips 301 and lower strips 302. The directions of the raised strips 301 and lower strips 302 are not perpendicular to the axis of the pressure roller, causing the paper or nonwoven fabric to form corresponding textures on its surface after passing through the first pressure roller 10 and the second pressure roller 20. During subsequent passage through the filter rod, because the folding direction of the paper or nonwoven fabric is opposite to its surface texture (i.e., the texture direction is not parallel to the axis of the filter rod), this design improves the uniformity of overlap between the lower and higher parts of the paper or nonwoven fabric during folding, thereby reducing fluctuations in the filter rod's suction resistance and improving its stability. Furthermore, the formed paper or nonwoven filter rod has reinforcing ribs formed in its circumferential direction, enhancing its hardness and pressure-bearing capacity.
[0041] Please refer to the appendix again. Figure 2 As shown, in some optional embodiments, the directions of the convex strip 301 and the concave strip 302 are parallel to the axis of the pressure roller. It should be further noted that the height of the convex strip 301 and the depth of the concave strip 302 can be reasonably designed according to actual needs.
[0042] Please see the appendix Figure 3 As shown, in some optional embodiments, the directions of the convex strips 301 and concave strips 302 are along the oblique direction of the pressure roller, and the convex-concave structure 30 includes at least one set of convex-concave units. Each convex-concave unit is formed by alternating multiple convex strips 301 and multiple concave strips 302, and the two convex-concave units are symmetrically arranged. In this embodiment, by including at least one set of convex-concave units in the convex-concave structure 30 and symmetrically arranging the two convex-concave units, it is ensured that the paper and nonwoven fabric are subjected to uniform force direction when passing through the convex-concave structure 30 on the pressure roller during the forming process. It should be further noted that the convex-concave units can be an even number of rows, such as two, four, or six rows. The specific number can be adjusted according to actual application requirements to achieve the best processing effect.
[0043] In some alternative embodiments, the axis of symmetry of the two concave and convex units is perpendicular to the axis of the pressure roller.
[0044] In another aspect, the utility model discloses another embodiment provides a filter stick, the filter stick includes hollow pipe and the forming layer of paper or non -woven fabric that is wrapped in the hollow pipe outside, wherein the surface of forming layer has the concave and convex embossing that forms through the filter stick roller device of any one of the above embodiment effect.
[0045] Please refer to the accompanying drawings Figure 4 As shown in the drawings, in some optional embodiments, the surface of the forming layer has concave and convex horizontal embossing 401, which is formed by the filter stick roller device in the above embodiment, wherein the direction of the convex strip 301 and the concave strip 302 is parallel to the axis of the roller.
[0046] Please refer to the accompanying drawings Figure 5 As shown in the drawings, in some optional embodiments, the surface of the forming layer has concave and convex mountain-shaped oblique embossing 402, which is formed by the filter stick roller device in the above embodiment, wherein the direction of the convex strip 301 and the concave strip 302 is along the oblique direction of the roller, and the concave and convex structure 30 includes at least one group of concave and convex units, each concave and convex unit is formed by a plurality of convex strips 301 and a plurality of concave strips 302 alternately, and two concave and convex units are symmetrically arranged.
[0047] In some alternative embodiments, the concave-convex mountain-shaped embossing 402 is formed by the filter rod embossing roller device in the above embodiments in which the symmetry axes of the two concave-convex units are perpendicular to the axis of the embossing roller, and the corresponding formed concave-convex mountain-shaped embossing 402 at least includes a group of symmetrically distributed concave-convex embossing units, and the symmetry axes of the two concave-convex embossing units are parallel to the axis of the filter rod.
[0048] To further illustrate the performance of the filter rod provided by the present application, we selected paper and non-woven fabric of the same specification for experiments, and ensured that the embossing depth of the filter rod of the same specification was consistent. In the experiments, we measured the draw resistance, the corresponding standard deviation and the hardness of the paper rod and the non-woven fabric filter rod of different specifications under different embossing conditions (the traditional vertical embossing 403, the improved concave-convex horizontal embossing 401 and the concave-convex mountain-shaped embossing 402). It should be further pointed out that the draw resistance (usually represented by mmH2O) refers to the pressure loss generated when passing through a filter rod or other filter medium, specifically the water column height that needs to be overcome per unit area, and the unit is millimeters of water column (mmH2O). This index reflects the resistance of the filter rod to the flow of gas or liquid, and the higher the value, the greater the resistance of the fluid passing through the filter rod. The stability of the draw resistance can be reflected by the draw resistance standard deviation, and the larger the value, the worse the stability of the draw resistance. The specific results are shown in the table.
[0049] (I) Paper rod measurement results
[0050] Table 1 Coarse paper rod
[0051]
[0052] Table 2 Standard paper rod
[0053]
[0054] Table 3 Fine paper rod
[0055]
[0056] (II) Non-woven fabric filter rod measurement results
[0057] Table 4 Coarse non-woven fabric filter rod
[0058]
[0059] Table 5 Standard non-woven fabric filter rod
[0060]
[0061] Table 6 Fine non-woven fabric filter rod
[0062]
[0063] According to the data in Tables 1-6, the order of the standard deviation of the filter rod draw resistance from large to small is: vertical pressure lines > concave-convex oblique pressure lines > concave-convex horizontal pressure lines, and the order of the filter rod hardness from large to small is: concave-convex horizontal pressure lines > concave-convex oblique pressure lines > vertical pressure lines, which indicates that changing the pressure line shape on the paper rod and the non-woven fabric filter rod can improve the stability of the filter rod draw resistance and enhance the hardness of the filter rod.
[0064] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A filter rod press roller apparatus, characterized by, The device comprises two opposite pressure rollers, a first pressure roller and a second pressure roller, the surfaces of the first pressure roller and the second pressure roller are provided with concave-convex structures, the concave-convex structures comprise alternating convex lines and concave lines, the directions of the convex lines and the concave lines are non-perpendicular to the axes of the pressure rollers. The concave-convex structures of the first pressure roller and the second pressure roller are interlocked, paper or non-woven fabric can be effectively transmitted under the rotation of the first pressure roller and the second pressure roller, and corresponding lines are formed on the surfaces thereof.
2. A filter rod press roller apparatus according to claim 1, characterised in that, The directions of the convex lines and the concave lines are parallel to the axes of the pressure rollers.
3. A filter rod press roller apparatus according to claim 1, characterised in that The directions of the convex lines and the concave lines are oblique to the pressure rollers, and the concave-convex structures comprise at least one group of concave-convex units, each concave-convex unit is formed by alternating a plurality of convex lines and a plurality of concave lines, and two concave-convex units are symmetrically arranged.
4. A filter rod compression roller apparatus according to claim 3, characterised in that The axes of symmetry of the two concave-convex units are perpendicular to the axes of the pressure rollers.
5. A filter rod, characterized in that, The device comprises a hollow tube and a formed layer made of paper or non-woven fabric wrapped outside the hollow tube. The surface of the formed layer has concave-convex embossing formed by the filter rod pressure roller device according to any one of claims 1 to 4.
6. A filter rod according to claim 5, characterised in that, The surface of the formed layer has concave-convex cross embossing formed by the filter rod pressure roller device according to claim 2.
7. A filter rod according to claim 5, characterised in that The surface of the formed layer has concave-convex chevron embossing formed by the filter rod pressure roller device according to any one of claims 3 or 4.
8. A filter rod according to claim 7, characterised in that, The concave-convex chevron embossing is formed by the filter rod pressure roller device according to claim 4, and comprises at least one group of symmetrically distributed concave-convex chevron units, and the axes of symmetry of the two concave-convex chevron units are parallel to the axis of the filter rod.