Filter tip for smoking a smokeable substance and method for making the same

Abstract

The present invention discloses a tubular filter for inhaling a smokeable substance and a manufacturing method thereof, the tubular filter comprising: a accommodating section having a accommodating cavity, the size of the accommodating cavity being suitable for accommodating the smokeable substance; a suction section having a suction cavity, the suction cavity being used to output smoke generated when the smokeable substance is ignited, wherein the suction section has a first open end leading into the suction cavity, the accommodating section has a second open end leading into the accommodating cavity and opposite to the first open end; and a first recess and a second recess separating the accommodating cavity from the suction cavity, the two recesses forming recesses of the tube wall of the tubular filter, the two recesses being at least partially located in a cross-sectional section of the tubular filter, the two recesses forming a channel in the tubular filter that connects the accommodating cavity fluid to the suction cavity and passes through the longitudinal center axis of the tubular filter in a diagonal direction.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to filters for smoking a smokeable substance and having a plurality of depressions.Other embodiments are also described in the present disclosure. Background Art

[0002] At present, there are various means for smoking tobacco and other substances. The most commonly used means are cigarettes or cigars made of tobacco wrapped in thin paper. After one end of the cigarette or cigar is lit, the smoke emitted by the tobacco in a burning (or smoldering) state is inhaled or tasted from the other end. In addition to cigarettes, there are also pipes designed with a bowl at one end for holding tobacco and the other end for the user to inhale or taste the smoke or vapor emitted by the burning or evaporation of tobacco. Specifically, the pipe generally consists of a bowl facing upward and used to hold tobacco, and a tobacco rod (or pipe handle) extending from the bowl to the mouthpiece (pipe mouth). Cigarettes and cigars are disposable products, while most pipes are not disposable products. Summary of the invention

[0003] Many smoking cigarettes are manufactured by machines and have commercial brands. Such cigarettes may include two parts wrapped in thin paper: tobacco at one end; and a cigarette filter at the opposite end. When smoking, the end containing the tobacco is lit to generate smoke. The user holds the end containing the cigarette filter on his lips and then draws the smoke from the tobacco so that it passes through the cigarette filter and enters the user's mouth (and lungs). Subsequently, the user exhales the smoke and repeats this inhalation and exhalation process. The cigarette filter can achieve multiple purposes. For example, the filter can reduce the amount of tobacco residue inhaled from the burning tobacco. In addition, the filter can be used as the part of the cigarette that the user holds after the tobacco is lit. In addition, the filter is also used as a channel for the smoke to enter the user's mouth from the lit tobacco. The channel can help cool the smoke before it enters the user's lungs to provide a more comfortable smoking experience.

[0004] However, some cigarettes may not be equipped with cigarette filters during the manufacturing process. For example, when a user makes a hand-rolled cigarette, a cigarette filter may not be installed. Such hand-rolled cigarettes may only include tobacco wrapped in thin paper. When hand-rolling cigarettes, some users may pinch off a portion of the end of the cigarette for smoking or roll it by hand instead of installing a filter. Although this allows the user to smoke the cigarette, it does not have the benefits that a filter can provide, such as preventing tobacco residue from entering the user's mouth (and lungs). Therefore, a filter is needed that allows the user to inhale a smokable substance.

[0005] The present disclosure relates to a filter for sucking a smokeable substance, the filter having a plurality of depressions. The filter may, for example, include three depressions, which are arranged between a receiving cavity (such as a receiving cavity of a receiving section) of a size suitable for accommodating a smokeable substance and a suction cavity (such as a suction cavity of a suction section) for outputting smoke generated when the smokeable substance is ignited. A portion of the first depression and a first portion of the second depression are located in a first cross-sectional section of the filter, and a portion of the third depression and a second portion of the second depression are located in a second cross-sectional section of the filter. In addition, the third depression is integrally arranged above the first depression along a longitudinal center axis (Z axis). The filter made in this way provides a user with a reusable filter for sucking a smokeable substance. The user may, for example, insert a hand-rolled cigarette (such as a hand-rolled cigarette without a filter) into the receiving cavity and inhale the smoke in the suction cavity. The depression may filter the smoke (such as filtering tobacco residues) before it enters the suction cavity.

[0006] The above summary does not include an exhaustive list of all aspects of the present disclosure. It is contemplated that the present disclosure includes all systems and methods that can be practiced from the various aspects of the above summary, as well as the detailed description disclosed below and in all suitable combinations with the claims attached to this application. Such combinations have specific benefits not specifically described in the above summary. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Below, the embodiments of the present disclosure are described in a non-limiting example manner through the accompanying drawings. In the accompanying drawings, similar figure labels represent similar elements. It should be noted that in the present disclosure, references to "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment, but rather represent at least one embodiment. In addition, for the sake of simplicity and reducing the total number of drawings, a certain drawing may be used to illustrate the features of more than one embodiment of the present disclosure, and for a certain embodiment, not all elements shown in the drawings may be required elements.

[0008] Figure 1 Shown is a filter for smoking a smokeable substance according to an embodiment of the present disclosure.

[0009] Figures 2 to 9 Shown is a filter manufacturing process according to one embodiment of the present disclosure.

[0010] Fig.10 A flow chart of one embodiment of a filter manufacturing process.

[0011] Fig.11 Shown is another filter for sucking a smokeable substance including three or more depressions along a longitudinal center axis according to an embodiment of the present disclosure.

[0012] Fig.12 Shown is another filter for smoking a smokeable substance including a plurality of depressions according to another embodiment of the present disclosure.

[0013] Fig.13a for Fig.12 A perspective view of the filter tip is shown.

[0014] Fig.13b is a cross-sectional view of a portion of a filter according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0015] Hereinafter, with reference to the accompanying drawings, several embodiments of the present disclosure are described. In the following embodiments, if the shape, relative position and other aspects of any described component are not clearly defined, the components shown are intended only for illustration, and the scope of the present disclosure is not limited to the components shown. In addition, although many details are described in the text, it is understood that some embodiments of the present disclosure can also be put into practice without these details. In addition, in order to avoid difficulties in understanding this article, the structure and technology are not described in detail in some cases. In addition, all ranges given in the text are deemed to include endpoints unless it is explicitly stated that endpoints are not included. In addition, the words "above", "to" and "on" used in the text can represent the relative position of a component relative to other components. When a component is located "above" or "on" another component or combined with "to" another component, it means that the component can be in direct contact with another component, or there are one or more intermediate layers between the two. In addition, relative words such as "top", "above", "upper", "bottom", "below" or "lower" can be used in the text to represent relative positions or relative directions. For example, the direction of "top edge", "top end" or "top side" can be the first axis direction, while the direction of "bottom edge", "bottom end" or "bottom side" can be the second axis direction opposite to the first axis direction.

[0016] According to one embodiment, a tubular filter for inhaling a smokeable substance comprises: a accommodating section having a accommodating cavity, the size of the accommodating cavity is suitable for accommodating the smokeable substance; a suction section having a suction cavity, the suction cavity being used to output smoke generated when the smokeable substance is ignited, wherein the suction section has a first opening end leading to the suction cavity, and the accommodating section has a second opening end leading to the accommodating cavity and opposite to the first opening end; and a first recess, a second recess and a third recess arranged between the accommodating cavity and the suction cavity, wherein a portion of the first recess and a first portion of the second recess are located in a first cross-sectional section of the tubular filter, a portion of the third recess and a second portion of the second recess are located in a second cross-sectional section of the tubular filter, and the third recess is arranged as a whole above the first recess along the longitudinal center axis.

[0017] In one embodiment, the first recess and the second recess form a first channel in the tubular filter, and the second recess and the third recess form a second channel in the tubular filter, wherein the first and second channels connect the accommodating chamber fluid to the suction chamber. In another embodiment, the first, second and third recesses are arranged equidistantly along the longitudinal center axis. In some embodiments, the first recess is aligned with the third recess along the longitudinal center axis. In one embodiment, the first and second cross-sectional sections are separated from each other and adjacent to each other, and have the same length along the longitudinal center axis.

[0018] In one embodiment, the first and third recesses are radially spaced 180° from the second recess around the longitudinal center axis. In another embodiment, the tubular filter is made of at least one of metal and glass. In some embodiments, the tubular filter has a diameter of 4 mm to 18 mm. In one embodiment, the first open end and the second open end each have an inner diameter of 3 mm to 12 mm. In another embodiment, the length of the tubular filter along the longitudinal center axis from the first open end to the second open end is 12 mm to 120 mm.

[0019] According to another embodiment, a tubular filter for inhaling a smokeable substance comprises: a accommodating section having a accommodating cavity, the size of the accommodating cavity is suitable for accommodating the smokeable substance; a suction section having a suction cavity, the suction cavity being used to output smoke generated when the smokeable substance is ignited, wherein the suction section has a first open end leading to the suction cavity, and the accommodating section has a second open end leading to the accommodating cavity and opposite to the first open end; and a recessed section arranged between the accommodating section and the suction section and fluidically connecting the accommodating section and the suction section, wherein the recessed section comprises a first recess, a second recess and a third recess, and the first recess, the second recess and the third recess are completely aligned along a plane that is transverse to the longitudinal center axis of the tubular filter.

[0020] In one embodiment, the first, second and third depressions are arranged equidistantly along the circumference of the tubular filter. In some embodiments, each of the first, second and third depressions is a recessed portion of the wall of the tubular filter. In another embodiment, each recess has the same size. In one embodiment, at least one recess has a different size from another recess.

[0021] In another embodiment, the recessed section includes a hollow interior space formed by the first, second and third recesses. In one embodiment, the longitudinal center axis intersects with the hollow interior space, and does not intersect with any portion of the first, second or third recesses. In some embodiments, the tubular filter is made of at least one of metal and glass. In one embodiment, the suction section has a first length extending along the longitudinal center axis, and the containing section has a second length extending along the longitudinal center axis, wherein the first length is less than the second length. In another embodiment, the containing section tapers inwardly along the longitudinal center axis.

[0022] According to one embodiment, a method for manufacturing a filter tip includes: providing a tubular object having a cylindrical tube wall and a hollow interior space; forming a first recess in the tubular object, wherein a first portion of the cylindrical tube wall is recessed into the hollow interior space at the first recess; and forming a second recess in the tubular object, wherein a second portion of the cylindrical tube wall is recessed into the hollow interior space at the second recess, wherein the first recess and the second recess: (1) form a first chamber and a second chamber separated by the first recess and the second recess in the tubular object; and (2) form a channel located in the hollow interior space between the first and second recesses that fluidically connects the first chamber and the second chamber to each other.

[0023] In one embodiment, forming the first depression comprises: applying heat to a first portion of the cylindrical wall; applying inward pressure on the first portion of the cylindrical wall to cause the cylindrical wall to collapse into the hollow interior space. In another embodiment, the method further comprises, after forming the first depression, rotating the tubular object about a longitudinal axis extending through the center of the tubular object by a predetermined threshold. In some embodiments, the second depression is formed after the tubular object is rotated about the longitudinal axis. In another embodiment, the second portion of the cylindrical wall is radially separated from the first portion of the cylindrical wall by a predetermined threshold about the longitudinal axis. In some embodiments, the predetermined threshold for the rotation of the tubular object about the longitudinal axis is 180°.

[0024] In one embodiment, at least a portion of each of the first and second recesses intersects with a longitudinal axis extending through the center of the tubular object. In another embodiment, the first and second portions are at least partially within a cross-sectional section of the tubular object. In some embodiments, the method further comprises, after forming the second recess: scoring the tubular object to form a score along the circumference of the tubular object; applying heat to the score; and spraying water on the heated score to separate the filter including the first and second recesses from the tubular object. In some embodiments, the filter has an end that was originally connected to the tubular object, wherein the method further comprises flame polishing the end of the filter after separating the lower filter from the tubular object. In another embodiment, the tubular object includes an end, wherein the method further comprises flame polishing the end of the tubular object before forming the first and second recesses.

[0025] According to another embodiment, a tubular filter for inhaling a smokeable substance comprises: a accommodating section having a accommodating cavity, the size of the accommodating cavity is suitable for accommodating the smokeable substance; a suction section having a suction cavity, the suction cavity being used to output smoke generated when the smokeable substance is ignited, wherein the suction section has a first open end leading into the suction cavity, and the accommodating section has a second open end leading into the accommodating cavity and opposite to the first open end; and a first recess and a second recess separating the accommodating cavity from the suction cavity, the first recess being formed by a first recess in the tube wall of the tubular filter, and the second recess being formed by a second recess in the tube wall of the tubular filter, wherein the first recess and the second recess are at least partially located in a cross-sectional section of the tubular filter, the first recess and the second recess forming a channel in the tubular filter, the channel connecting the accommodating cavity fluid to the suction cavity, and extending diagonally through the longitudinal center axis of the tubular filter.

[0026] In one embodiment, the first depression is radially spaced 180° from the second depression around the longitudinal center axis. In another embodiment, the tubular filter is made of at least one of metal and glass. In some embodiments, the tubular filter has a diameter of 4 mm to 18 mm. In some embodiments, the first open end and the second open end both have an inner diameter of 3 mm to 12 mm. In one embodiment, the length of the tubular filter extending along the longitudinal center axis is 12 mm to 120 mm. In another embodiment, the first and second depressions are closer to the first open end than to the second open end. In some embodiments, the suction section has a first length extending along the longitudinal center axis, and the containing section has a second length extending along the longitudinal center axis, wherein the first length is less than the second length. In another embodiment, the first and second open ends have a flange extending around the circumference of the tubular filter.

[0027] Figure 1Shown is a filter for sucking a smokeable substance according to an embodiment of the present disclosure. Specifically, the filter 1 shown in the figure can be a tubular object (or has a substantially tubular shape), and the tubular object includes a (substantially) cylindrical tube wall 2 and a hollow internal space 3. In one embodiment, the filter can be in any shape, such as a cubic shape, a conical shape or a spherical shape. The filter can be composed of at least one material such as glass, plastic and metal (such as steel). In one embodiment, the filter can be completely composed of a single material such as glass.

[0028] The filter 1 comprises: a first (open) end 4 having a first opening 5 leading into the hollow interior space 3; and a second (open) end 6 having a second opening 7 leading into the hollow interior space. In one embodiment, the first open end 4 is opposite to the second open end 6. In this way, the hollow interior space 3 connects the opening 5 (and) fluid to the opening 7. The filter 1 has a first (outer) diameter (D1) which is the outermost diameter of the cylindrical tube wall 2 and a second (inner) diameter (D2) which is the diameter of (at least a portion of) the hollow interior space 3. In one embodiment, D1 may be about 4 mm to 18 mm. In another embodiment, D2 may be about 3 mm to 17 mm. In one embodiment, D2 may depend on the thickness of the cylindrical tube wall 2, which may be about 0.5 mm to 2 mm. In one embodiment, the amount by which D2 is less than D1 may be at least twice the thickness of the cylindrical tube wall. In another embodiment, the length (L1) of the filter extending from the first open end 4 to the second end 6 along the longitudinal center axis (eg, Z axis) may be about 12 mm to 120 mm. In one embodiment, the size of the filter 1 may also vary as described herein.

[0029] In one embodiment, the first open end 4 and the second end 6 of the filter 1 may have similar dimensions. For example, the diameters of the first open end 4 and the second end 6 may be D1, and the diameters of their respective openings may be D2. In another embodiment, the diameters of the ends may be different from each other. For example, the outer diameter of the first open end 4 may be greater than the outer diameter of the second end 6.

[0030] The filter 1 includes several sections. Specifically, the filter includes a first (such as suction) section 10, a recessed section 11 and a second (such as a containing) section 12. As shown in the figure, the recessed section is arranged (or located) between the suction section and the containing section. Specifically, the suction section includes a first open end 4, and is adjacent to the recessed section. The containing section includes a second open end 6, and is adjacent to the recessed section and opposite to the suction section. The containing section also includes a containing chamber 14, which is formed in the hollow internal space 3 and is used to contain (via the second open end 6) a smokeable substance such as tobacco. Specifically, the open end 6 is fluidly connected to the containing chamber, wherein the size of both can be suitable (for example, having a diameter D2) to contain a smokeable substance, such as (such as a personal hand-rolled) cigarette, etc. Similarly, the suction section also includes a suction chamber 13, which is formed in the hollow internal space 3 and is used to contain the smoke emitted when the smokeable substance contained in the containing chamber 14 is ignited. For example, a user can insert a personal hand-rolled cigarette into the containing chamber and light it. The open end 4 is fluidly connected to the suction chamber, wherein both are used to output smoke generated when the smokeable substance is ignited. Specifically, the suction chamber can be used to contain the generated smoke (such as from the containing chamber), and the open end 4 is used to output the smoke (for example, when the user inhales).

[0031] In one embodiment, both the containing section 12 and the suction section 10 may have a substantially tubular shape along the Z axis of the filter. For example, the containing section may have the same (or similar) outer diameter (such as D1) and inner diameter (such as the diameter of the containing cavity, such as D2) along its length (L3), and the length (L3) of the containing section is the length extending from the second opening end 6 to the recessed section 11 along the Z axis. Similarly, the suction section may have the same (or similar) outer diameter (such as D1) and inner diameter (such as the diameter of the suction cavity, such as D2) along its length (L2), and the length (L2) of the suction section is the length extending from the first opening end 4 to the recessed section along the Z axis. In one embodiment, the chambers of each section have the same or similar length as the corresponding sections. For example, the containing cavity 14 has the same or similar length L3 as the containing section.

[0032] In one embodiment, the containing section 12 and the suction section 10 may have different sizes. For example, as shown in the figure, the length L3 of the containing section (and the containing cavity) extending along the Z axis is greater than the length L2 of the suction section (and the suction cavity) extending along the Z axis. In this way, the recessed section 11 may not be arranged centrally along the length L1 of the filter 1. For example, the recessed section 11 is closer to the first opening end 4 of the filter 1 than to the second opening end 6 (along the Z axis). Specifically, the distance between the recessed section 11 and the suction section 10 is less than a threshold distance. In another embodiment, L2 may be greater than L3.

[0033] The recessed section 11 includes a first recess 8 and a second recess 9 extending along a portion of the filter 1 in the Z-axis direction, and the first recess 8 and the second recess 9 both separate the accommodating chamber 14 from the suction chamber 13. The first recess 8 is formed by a first recess 16 of the cylindrical tube wall 2 of the filter 1, and the second recess 9 is formed by a second recess 17 of the cylindrical tube wall 2 of the filter 1. Specifically, each recess is a portion of the cylindrical tube wall 2 recessed into the hollow internal space, thereby reducing the inner diameter (D2) of the hollow internal space. In one embodiment, each recess can also reduce the outer diameter (D1) of the filter 1.

[0034] As shown, the recesses 16 and 17 extend along different sections of the filter 1 in the Z-axis direction. For example, the first recess 16 starts to be recessed at point 18a on the cylindrical tube wall 2 and stops being recessed at point 18b. Similarly, the second recess 17 starts to be recessed at point 19a on the cylindrical tube wall 2 and stops being recessed at point 19b. In this way, the first recess 16 starts to be recessed before the second recess starts to be recessed, and stops being recessed before the second recess 17 stops being recessed (along the Z-axis direction). Therefore, as shown, each recess is at least partially within (or overlaps) the cross-sectional section of the filter 1. Specifically, a partial cross-sectional section of the recessed section 11 (the length is, for example, between 19a and 18b in the Z-axis direction) simultaneously includes at least a portion of the first recess 16 and at least a portion of the second recess 17. In one embodiment, the portions of the recesses 16 and 17 included in the cross-sectional section may be equal (or symmetrical). For example, point 19a may be on a plane that is transverse to the Z-axis and intersects with the midpoint of the depression 8 (such as the midpoint between 18a and 18b). Similarly, point 18b may be on a plane that is transverse to the Z-axis and intersects with the midpoint of the concave portion 9 (such as the midpoint between 19a and 19b). On the other hand, the recesses 16 and 17 may not overlap each other at least partially. For example, at least one other partial cross-sectional section of the recessed section 11 (e.g., the portion between 18a and 19a and between 18b and 19b) includes only one of the first recess 16 and the second recess 17. In one embodiment, both of the above-mentioned recesses are portions of the cylindrical tube wall that are recessed into the hollow internal space 3 and do not connect the hollow internal space to the external environment fluid of the filter. In addition, both of the above-mentioned recesses pass through (or intersect with) the longitudinal center Z axis of the filter at least twice.

[0035] In one embodiment, the recessed section 11 is used to connect the receiving section 12 with the suction section 10. Specifically, the first recess 8 and the second recess 9 are both recessed portions of the cylindrical tube wall 2, and the two recesses form a channel 15 inside the filter 1 that connects the receiving cavity 14 of the receiving section 12 with the suction cavity 13 of the suction section 10. In one embodiment, the diameter of the channel 15 is smaller than the diameter of any of the above cavities (such as D2). In addition, the channel 15 extends diagonally through the longitudinal center Z axis of the filter.

[0036] In one embodiment, the filter 1 may include fewer or more components than those described above. For example, in one variation, the filter 1 may include only one depression (such as the first depression 8), while in another variation, the filter 1 may include more than three depressions. For another example, the filter may include more than three chambers in the hollow interior space 3. The filter may, for example, include a chamber separating the first depression 8 from the second depression 9.

[0037] As described herein, the size of the filter 1 may vary. Specifically, there may be a diameter variation (e.g., D1 and / or D2) between one or more of the above-mentioned segments. For example, the receiving segment 12 may taper inwardly toward the Z-axis and along the Z-axis, so that the portion of the receiving segment closest to the recessed segment 11 (e.g., the cross-sectional portion) may have a first diameter (e.g., D2), and the first open end 4 of the filter may have a second diameter that is smaller than the first diameter. In another embodiment, the suction segment 10 may taper along the Z-axis.

[0038] Figures 2 to 9 1 and 2 show a filter manufacturing process according to an embodiment of the present disclosure. Specifically, these figures show a filter 1 ( Figure 1 shown) process.

[0039] Figure 2 and Figure 3 FIG. 3 shows the formation of the first recess 32. Specifically, Figure 2 As shown, heat 26 is applied to a tubular object 20 having a cylindrical wall 21 and a hollow interior space 22. The tubular object 20 also has a (first open) end 23 having a (first) opening 24. As shown, heat 26 is applied to a (first) portion of the cylindrical wall 21 of the tubular object 20. In one embodiment, the heat is applied to the first portion of the cylindrical wall 21 for a first length of time (e.g., four seconds). In another embodiment, the heat 26 is applied for a length of time such that the first portion of the cylindrical wall 21 becomes compliant. In some embodiments, the heat can come from the flame of a blowtorch, such as a propane blowtorch or a natural gas blowtorch. Figure 3 Shown is a portion of a cylindrical tube wall after heat 26 has been applied to it. Figure 220. Specifically, as shown in the figure, the tool 31 applies inward pressure to the heat-applied portion 25 of the cylindrical tube wall, so that the cylindrical tube wall 21 collapses into the hollow interior space 22. In one embodiment, the tool 31 is a metal rod or a metal plunger. In one embodiment, the tool 31 is a drill. In another embodiment, the tool 31 can apply pressure inward for a second time length (such as two seconds) after applying heat 26. By applying this pressure, a first depression 32 is formed.

[0040] Figure 4 The first recess 32 is formed. Figure 3 Specifically, as shown in the figure, the tubular article 20 has been rotated (41) about a longitudinal Z axis extending through the center of the tubular article 20. In one embodiment, the tubular article 20 is rotated by a predetermined threshold. For example, the tubular article 20 may be rotated (41) 180° about the Z axis. This can be seen from the first recess 32 at Figure 4 In the right side of the tubular object 20 and in Figure 3 In the figure, it is seen from the left side of the tubular object 20. In one embodiment, the rotation angle of the tubular object 20 can be less than or greater than 180°, such as 135°.

[0041] Figure 5 and Figure 6 FIG. 6 shows the formation of the second recess 61. Specifically, Figure 5 The figure shows the rotation (41) Figure 4 20. Specifically, as shown in the figure, heat 50 is applied to the (second) portion 51 of the tubular object 20. As shown in the figure, the position of the application point of the heat 50 on the Z axis is different from the application point of the heat 26. Specifically, the second portion 51 to which the heat 50 is applied is higher on the Z axis (starting from the end 23) than the first portion 25 to which the heat 26 is applied. In this way, the first and second portions at least partially overlap with each other, or are at least partially contained in the cross-section of the tubular object 20. In addition, since the tubular object 20 has rotated (41), the second portion 51 and the first portion 25 are radially separated by a predetermined threshold value (such as 180°) of the rotation of the tubular object. In one embodiment, the applied heat 50 is Figure 2 In one embodiment, the heat 50 may be applied after a third time period after the first depression is formed, to allow the tubular to (slightly) cool. The third time period may be, for example, thirty seconds between the time the first depression is formed and the time the heat 50 is initially applied. Figure 6 Shown is the heat after 50 Figure 5Specifically, as shown in the figure, the tool 31 applies inward pressure to the heat-applied portion 51 of the cylindrical tube wall so that the cylindrical tube wall 21 collapses into the hollow interior space 22. In this way, by pressing the heat-applied portion 51 of the cylindrical tube wall 21, the cylindrical tube wall 21 collapses into the hollow interior space 22. Figure 4 After the tubular object 20 is rotated about the longitudinal Z axis in the manner shown, pressure is applied thereon to form a second recess 61. In this manner, the first recess 32 and the second recess 61: (1) form a first chamber 62 and a second chamber 63 separated by the two recesses in the tubular object 20; and (2) form a channel 64 located in the hollow internal space between the first and second recesses, which fluidly connects the two chambers to each other. Since the second recess is formed after the tubular object 20 is rotated, the first recess and the second recess are radially separated by a predetermined threshold (such as 180°) around the longitudinal center axis. In one embodiment, the pressure applied to the second portion 51 is the same as the pressure applied to the first portion 25, so that the first and second recesses can have the same recess structure. In another embodiment, the pressure applied to the first and second portions can be different, so that the first and second recesses can have different recess structures. In some embodiments, the second recess 61 can be formed by different tools.

[0042] Figures 7 to 9 The tubular filter and the Figure 6 The separation of the tubular object 20 shown. Specifically, as Figure 7 As shown, while the tubular object 20 is rotated (70), a scoring tool 71 scores (or cuts) the tubular object, thereby forming a score 73 extending along the circumference of the tubular object 20. In one embodiment, the scoring tool 71 is a scoring wheel. In another embodiment, the scoring tool can be any tool used to score glass.

[0043] like Figure 8 As shown, heat 81 is applied to score 72 while rotating tube 20. As described herein, heat 81 can be the same (similar) or different than at least one of the other heats applied to tube 20 (e.g., heats 26 and 51). For example, heat 81 can be applied for a fourth length of time (e.g., four seconds). As described herein, heat 81 is applied while rotating tube 20. In one embodiment, the rotation speed of tube 20 when heat is applied can be the same as the speed at which the tube is scored (e.g., Figure 7 The speed when (shown) is similar, also can be different.In one embodiment, tubular object 20 rotates so that heat 81 is applied evenly on the score.

[0044] like Fig. 9As shown, the tubular object 20 is cut due to thermal shock. Specifically, as shown in the figure, the nozzle 91 sprays liquid 92 (such as water) onto the heated score 72. The sprayed liquid causes thermal shock to the tubular object 20, so that a portion 93 of the tubular object is separated from (the remaining portion of) the tubular object 20. The portion 93 is the filter tip including the first depression 32 and the second depression 61 described herein. In one embodiment, the filter tip 93 can be separated (or cut off) while the tubular object 20 continues to rotate. In another embodiment, the filter tip 93 is Figure 1 The filters 1 shown are identical.

[0045] In one embodiment, the tube 20 may also be allowed to cool after forming the second recess 61. Specifically, the heat 81 may be applied after a sixth length of time (eg, one minute) after forming the second recess 61.

[0046] Fig.10 For filter tips (such as Figure 1 Filter 1 and / or Fig. 9 A flowchart of an embodiment of a manufacturing process 100 of a filter tip 93) is provided. Figures 1 to 9 , the flow chart is described. The process 100 first provides a tubular object, such as a tubular object 20 including a cylindrical tube wall 21 and a hollow interior space 22 (box 101). The process 100 also flame-polishes one end of the tubular object (box 102). For example, the end 23 of the tubular object 20 is flame-polished. In one embodiment, the end 23 can be flame-polished before any depression is formed on the tubular object 20. In another embodiment, the end can be flame-polished after at least one depression is formed. In some embodiments, the flame-polishing process includes: applying heat to the end while rotating the tubular object 20. In one embodiment, this step can be performed one or more times. For example, heat can be applied for a certain length of time (such as five seconds) during the process of rotating the tubular object 20. In one embodiment, heat can be applied by a flame (blowtorch flame) during the process of rotating the tubular object. Subsequently, the heat is removed for a certain length of time (such as two seconds). After this, heat can be applied for a third time length (e.g., five seconds) again while the tubular object 20 is rotated. In one embodiment, the heat applied for the second time can be hotter (e.g., higher temperature) than the heat applied for the first time. In one embodiment, the above-mentioned time lengths can also be the same or different. By flame polishing, a flange extending along the circumference of the filter tip 1 can be formed at the end 23 of the tubular object 20, and the outer diameter of the flange can be greater than the outer diameter of the tubular object 20 (cylindrical tube wall 21).

[0047] The process 100 also forms a first depression on the tubular 20, in which a first portion of the cylindrical wall is recessed into the hollow interior space. Specifically, the first depression is formed by applying heat to the first portion of the tubular; and applying inward pressure to the first portion (block 103). The process 100 also rotates the tubular 20 (block 104). The process 100 also forms a second depression on the tubular 20, in which a second portion of the cylindrical wall is recessed into the hollow interior space. Specifically, the second depression is formed by applying heat to the second portion of the tubular; and applying inward pressure to the second portion (block 105). Process 106 also separates the filter (e.g., 93) from the tubular article 20 including the first and second depressions by scoring the tubular article to form a score on the tubular article; applying heat to the score; and thermally shocking the tubular article by spraying water on the heated score to separate the filter from the tubular article (block 106). Process 100 also flame-polishes the end of the filter (block 107). For example, Fig. 9 As shown, the end 94 of the filter 93 was originally connected to the tube 20 before the filter was cut by thermally shocking the tube. In one embodiment, the end 94 can be subjected to a flame polishing process similar to the flame polishing process performed on the end 23 described in block 102.

[0048] Some embodiments employ Fig.10 Variations of process 100 shown in the drawings may be provided. For example, at least some of the specific operations in such processes may be performed in a different order than shown and described herein. The specific operations may not be a series of operations that are performed in a continuous manner, and different specific operations may be performed in different embodiments. For example, the operations of the first and second recesses may be performed in any order (e.g., the operations of the first recess may be performed before the operations of the second recess, and vice versa). In some embodiments, at least some of the operations described herein are optional operations. For example, the operations contained in the dashed boxes (such as boxes 102 and 107) may not be performed.

[0049] Fig.11 Another filter tip for sucking a smokeable substance including three or more depressions along the longitudinal center axis according to an embodiment of the present disclosure is shown. Figure 1The filter 1 shown is similar. For example, the filter 111 includes a suction section 10, a recessed section 11 and a receiving section 12. The filter 111 also includes three (or more) recesses, each of which is a recessed portion of the filter tube wall extending along a portion of the tubular object in the Z-axis direction. As shown, each recess overlaps at least partially with one or more other recesses along the same portion or the same length of the filter 111. Specifically, the first cross-section of the filter 111 along the length cross-section between 19a and 18b in the Z-axis direction includes a portion of the first recess and a (first) portion of the second recess 9, and the second cross-section of the filter 111 along the length cross-section between 118a and 19b in the Z-axis direction includes a portion 112 of the third recess and another (second) portion of the second recess 9. In one embodiment, the cross-sections are separated from each other and adjacent to each other, and have the same length along the Z-axis, so that the length (or distance) between 19a and 18b is the same as the length between 118a and 19b. In another embodiment, the points 18b and 118a may be the same point. In another embodiment, the corresponding recessed portions contained in the two cross-sectional sections may be equal (or symmetrical).

[0050] In one embodiment, at least some of the depressions may be radially aligned with each other. Specifically, the first depression 8 is radially aligned with the third depression 112 along the Z axis. For example, when forming the third depression, the portion to which heat and pressure are applied to the tubular object 20 may be vertically (along the Z axis) aligned with the first depression 8. Figure 2 and Figure 3 The portion 25 shown is aligned. In some embodiments, as described herein, the recesses may be radially spaced apart from each other. For example, as shown, the first and third recesses are radially spaced 180° from the second recess 9 around the Z axis. Specifically, after each recess is formed, the filter tip may be rotated 180° before forming the next recess. In another embodiment, the recesses may be radially spaced apart from each other in different ways. For example, the recesses may be spaced apart from each other in a spiral manner around the Z axis, for example, the first recess is formed at 0°, the second recess is formed at 90°, and the third recess is formed at 180°.

[0051] As shown, more than three depressions may be provided along the Z-axis. For example, the third depression 112 is provided entirely above the first depression along the Z-axis. In one embodiment, the three depressions are provided equidistantly along the Z-axis. In one embodiment, the distances between the midpoints of adjacent depressions (along the Z-axis direction) may be the same or (similar). For example, the distance between the midpoint of the first depression (e.g., between 18a and 18b) and the midpoint of the second depression (e.g., between 19a and 19b) may be the same as the distance between the midpoint of the second depression and the midpoint of the third depression (e.g., between 118a and 118b).

[0052] In one embodiment, the increase in depressions allows additional channels to be formed in the hollow interior space of the filter, which fluidly connect the above-mentioned sections 10 and 12 together to allow smoke to circulate between the sections. As shown, the first and second depressions form a channel 15, and the second and third depressions form a channel 113. As described herein, both channels connect the chamber fluids of the sections 10 and 12 together. In one embodiment, the channels may be similar (or identical) to each other. For example, the shape and / or size of the channels may be the same. In another embodiment, the channels may be different from each other (such as different sizes), and the size of each channel may vary depending on the size of the corresponding depression.

[0053] As shown, the filter 111 includes an odd number of depressions. In some embodiments, the filter may include an even number of depressions. In such cases, the fourth depression may be entirely above the second depression 9 (along the Z axis) and / or may be aligned with the second depression.

[0054] Fig.12 Another filter for drawing smokeable substances including a plurality of depressions according to another embodiment of the present disclosure is shown. The filter 121 shown in the figure includes three depressions 127, 128, 129 that are completely aligned along a plane that is transverse to the Z axis. Specifically, the concave portion of each depression extends along the filter 121 for the same (or similar) length or portion. For example, a cross-sectional portion of a depression segment 11 (such as the entire depression segment 11) includes all three depressions extending along the entire length of the cross-sectional portion. This is similar to Figure 1 The concave sections are different. Figure 1 In the recessed section, the cross-sectional portion between 18b and 19b includes a portion of the recess 9, but does not include a portion of the recess 8. In one embodiment, the recesses are completely aligned so that the cross-sectional portion of the accommodating section 12 or the suction section 10 does not include any portion of these recesses.

[0055] In another embodiment, a portion of the cross-sectional section of the receiving section and / or the suction section may include corresponding portions of all three recesses.

[0056] In another embodiment, the recesses of each filter tip may have the same size and / or shape. In another embodiment, the recesses may have different sizes and / or shapes. Specifically, the size and / or shape of one recess may be different from the size and / or shape of another recess. For example, the size of recess 129, such as the length of the recess extending from one side of the filter tip tube wall to the Z axis, may be different from the length of recess 128.

[0057] Fig.13a and Fig.13b 1 are different views of the filter 121. For example, Fig.13aIt is a perspective view of a filter 121 including three depressions 127-129. Fig.13b 1 is a cross-sectional view of a portion of the filter 121. Specifically, the figure shows the concave section 11 along the direction relative to Fig.13a The Z axis shown is the cross-section of the horizontal plane 140. In one embodiment, each depression is fully aligned with the horizontal plane 140, so that the plane crosses the midpoint of the depression section (and the midpoint of each depression), and each depression is divided into two equal halves. For example, half of the depression 127 is above the plane 140, and the other half of the depression 127 is below the plane. Similarly, as shown in the figure, the depression section includes a hollow inner space 141 (or passage) formed by each depression. In this way, the chamber fluid of the holding section and the suction section relative to each other is connected together by this inner space 141. In addition, as shown in the figure, the longitudinal center Z axis intersects with the hollow inner space 141, so that each depression does not have any part to intersect with the Z axis.

[0058] In one embodiment, all depressions are equidistantly arranged along the circumference of the tubular filter. Specifically, the segment lengths or arc lengths between adjacent depressions are equal. This is also reflected in the angular position of each depression (such as its midpoint) around the Z axis. In this case, the angular positions can be equidistant from each other around the Z axis. For example, θ1 of depression 127 can be 45°, θ2 of depression 129 can be 180°, and θ3 of depression 128 can be 315°. In another embodiment, the angular positions can be unequally spaced from each other (for example, the segment length between depressions 129 and 128 can be shorter than the segment length between depressions 129 and 127).

[0059] In some embodiments, the filter 121 may include more or fewer depressions. For example, the filter may include only two depressions aligned along the Z axis and spaced 180° around the Z axis. In addition, the filter may, for example, include four depressions.

[0060] In one embodiment, one or more operations in process 100 may be similar to or different from corresponding operations in the manufacturing process of filter 121. For example, when forming the second and third depressions, heat and pressure may be applied to the same or similar points along the Z axis while rotating the tube about the Z axis, so that all (or a portion) of the depressions are aligned with each other.

[0061] As previously described, embodiments of the present disclosure may be non-transitory machine-readable media (e.g., microelectronic memory) having stored thereon instructions that program one or more data processing components (collectively referred to herein as "processors") to perform glassmaking operations in a vial manufacturing process. For example, each of the processing operations disclosed herein may be performed by a single machine or multiple machines in combination so that each step is considered an automated step that can be performed without user intervention. In other embodiments, portions of such operations may be performed by specific hardware components that contain hardwired logic. Alternatively, such operations may also be performed by programmed data processing components and fixed hardwired circuit components in any combination.

[0062] Although some embodiments have been described above and shown in the drawings, it is understood that such embodiments are for illustrative purposes only and do not limit the broad scope of the present disclosure. The present disclosure is not limited to the specific configurations and arrangements shown and described, and various other modifications may be made by those skilled in the art.

[0063] In some embodiments, the present disclosure may include statements such as "at least one of [element A] and [element B]". This statement may refer to one of the elements or multiple of the elements. For example, "at least one of A and B" may refer to "A", "B" or "A and B". Specifically, "at least one of A and B" may refer to "at least one of A and at least one of B", or "at least A or B...". In some embodiments, the present disclosure may include statements such as "[element A], [element B] and / or [element C]". This statement may refer to any one of the elements or any combination of the elements. For example, "A, B and / or C" may refer to "A", "B", "C", "A and B", "A and C", "B and C" or "A, B and C".

Claims

1. A tubular filter for sucking a smokable substance, characterized in that: The tubular filter comprises: a receiving section having a receiving cavity, the receiving cavity being sized to receive the smokeable substance; a suction section having a suction chamber, the suction chamber being used to output smoke generated when the smokable substance is ignited, wherein the suction section has a first opening end leading into the suction chamber, and the accommodating section has a second opening end leading into the accommodating chamber and opposite to the first opening end; and A recessed section is provided between the containing section and the suction section and fluidically connects the containing section to the suction section, wherein the recessed section comprises a first recess, a second recess and a third recess which are completely aligned along a plane which is transverse to the longitudinal center axis of the tubular filter.

2. The tubular filter according to claim 1, characterized in that: The first, second and third recesses are arranged equidistantly along the circumference of the tubular filter.

3. The tubular filter according to claim 1, characterized in that: Each of the depressions is a recessed portion of the tube wall of the tubular filter.

4. The tubular filter according to claim 3, characterized in that: Each of the recesses has the same size.

5. The tubular filter according to claim 3, characterized in that: At least one of the recesses has a different size than another one of the recesses.

6. The tubular filter according to claim 1, characterized in that: The recessed section includes a hollow interior space formed by the first, second and third recesses.

7. The tubular filter according to claim 6, characterized in that: The longitudinal center axis intersects the hollow interior space, and no portion of the first, second or third recesses intersects the longitudinal center axis.

8. The tubular filter according to claim 1, characterized in that: The suction section has a first length extending along the longitudinal center axis, and the receiving section has a second length extending along the longitudinal center axis, wherein the first length is smaller than the second length.

9. The tubular filter according to claim 1, characterized in that: The receiving section tapers inwardly along the longitudinal center axis.

10. A method for manufacturing a filter tip, characterized in that: include: Providing a tube having a cylindrical wall and a hollow interior space; forming a first depression in the tubular object, wherein a first portion of the cylindrical tube wall is recessed into the hollow interior space at the first depression; as well as A second depression is formed in the tubular object, and a second portion of the cylindrical tube wall is recessed into the hollow interior space at the second depression, A third depression is formed in the tubular object, and the second portion of the cylindrical tube wall is recessed into the hollow inner space at the third depression, Wherein, the first depression, the second depression and the third depression are completely aligned along a plane which is transverse to the longitudinal center axis of the tubular filter.

11. The method according to claim 10, characterized in that Forming the first recess includes: applying heat to the first portion of the cylindrical tube wall; and An inward pressure is applied to the first portion of the cylindrical tube wall to cause the cylindrical tube wall to collapse into the hollow interior space.

12. The method according to claim 11, characterized in that After forming the first depression, the method further includes rotating the tubular object by a predetermined threshold value around a longitudinal axis extending through the center of the tubular object.

13. The method according to claim 12, characterized in that The second recess is formed after the tube is rotated about the longitudinal axis.

14. The method according to claim 12, characterized in that The second portion of the cylindrical tube wall is radially separated from the first portion of the cylindrical tube wall by the predetermined threshold about the longitudinal axis.

15. The method according to claim 14, characterized in that The predetermined threshold for rotation of the tubular object about the longitudinal axis is 135°.

16. The method according to claim 10, characterized in that After forming the second recess, the method further comprises: Performing scoring on the tubular object to form scoring along the circumference of the tubular object; applying heat to the score; and Water is sprayed on the heated score lines to separate the filter including the first depressions, the second depressions and the third depressions from the tubular object.

17. The method according to claim 16, characterized in that The filter tip has an end originally connected to the tubular object, and the method further comprises: after separating the filter tip from the tubular object, performing a flame polishing process on the end of the filter tip.

18. The method according to claim 10, characterized in that The tubular object includes an end portion, and the method further includes: before forming the first recess and the second recess, performing a flame polishing process on the end portion of the tubular object.

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