Anti-tear closure and granular cigarette

Abstract

The present application belongs to the technical field of heated cigarettes, and particularly relates to a tear-proof blocking piece and a granular cigarette. The blocking piece is in a sheet shape and comprises a ring-shaped sheet and a central separation sheet. The ring-shaped sheet is provided with a "cross" type reserved gap in the center. The central separation sheet is provided with a "cross" type heating seam in the center, and the "cross" type heating seam is located in the center of the "cross" type reserved gap. A central tear-proof seam is opened in the center of the "cross" type heating seam. The present application provides a blocking piece with a central tear-proof seam. The central tear-proof seam has the following functions: (1) when the central heating needle is inserted, the central separation sheet part at the central tear-proof seam is easy to be deformed and not torn; (2) after the central heating needle is inserted, the central separation sheet part at the "cross" type heating seam and the central tear-proof seam can rely on the elasticity of the paper to restore the original state, and still block the granular smoking material in the cigarette.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of heated cigarettes, and particularly relates to a tear-proof blocking piece and a granular cigarette. BACKGROUND

[0002] The existing granular heat-not-burn product is a complete cigarette, which is formed by a hollow paper tube, a high-air-permeability paper pasted at the front end, granular smoking material capable of generating aerosol, an isolation plug for preventing the granular smoking material from moving axially in the cigarette, a temperature-reducing section for reducing the temperature of the heated smoke along the length direction of the paper tube, and a filter material section for further filtering the smoke at the end of the paper tube. However, when the cigarette is heated, the heating element such as a heating needle or a heating sheet needs to pierce the high-air-permeability paper pasted at the front end of the cigarette, and the high-air-permeability paper is easily torn and cannot effectively block the granular smoking material. In addition, the high-air-permeability paper is not easy to be pasted firmly on the paper tube or the reliability of the pasted high-air-permeability paper is not high during the manufacturing process.

[0003] In order to solve the above problems, the present application is proposed. SUMMARY

[0004] The first aspect of the present application provides a tear-proof blocking piece, which is in the shape of a sheet and comprises: an annular sheet and a central isolation sheet arranged on one side of the annular sheet.

[0005] The central part of the annular sheet is provided with a "cross" type reserved notch.

[0006] The central part of the central isolation sheet is provided with a "cross" type heating seam, and the "cross" type heating seam is located in the center of the "cross" type reserved notch.

[0007] In the center of the "cross" type heating seam, a central tear-proof seam is opened at a certain angle with the "cross" type heating seam, and the central tear-proof seam is at least one through the center of the "cross" type heating seam.

[0008] The "cross" type heating seam forms an open elastic valve.

[0009] Preferably, the central tear-proof seam is two cross-arranged central tear-proof seams, and the central tear-proof seam and the "cross" type heating seam jointly form a "rice" shape.

[0010] Preferably, a plurality of middle tear-proof seams are arranged on the "cross" type heating seam and communicate with the "cross" type heating seam.

[0011] Preferably, a terminal tear-proof seam is arranged at the end of the "cross" type heating seam and communicates with the "cross" type heating seam.

[0012] Preferably, 1-3 middle tear-preventing slits and one end tear-preventing slit are arranged on each of the four slits of the "cross" heating slit from the center.

[0013] Preferably, the middle tear-preventing slit and the end tear-preventing slit are perpendicular to the "cross" heating slit.

[0014] Preferably, the length of the central tear-preventing slit is 1 / 20-1 / 2 of the length of the "cross" heating slit.

[0015] Preferably, the length of the end tear-preventing slit is 0.5-0.8 times the length of the middle tear-preventing slit.

[0016] Preferably, the blocking member further comprises another annular sheet, and the two annular sheets sandwich the central isolation sheet.

[0017] Preferably, the annular sheet and the central isolation sheet are fixed by bonding.

[0018] Preferably, the blocking member is in the shape of a circular sheet or a regular polygon sheet.

[0019] Preferably, the material of the blocking member is selected from one or more of paper, polymer film, and aluminum foil, or a composite material thereof. For example, the central isolation sheet is made of paper, or a composite material of paper and aluminum foil, or a composite material of paper and polymer film. For example, the annular sheet is made of paper, or a composite material of paper and aluminum foil, or a composite material of paper and polymer film.

[0020] The central isolation sheet itself has a certain elasticity.

[0021] Preferably, the annular sheet and the central isolation sheet are both made of paper, and the hardness of the annular sheet is greater than that of the central isolation sheet.

[0022] The second aspect of the present application provides a granular cigarette, which comprises a tobacco pipe, a smoking segment arranged in the tobacco pipe, and a blocking member according to any one of the first aspect.

[0023] Preferably, when the blocking member is in the shape of a regular polygon sheet, the diameter of the circumscribed circle of the regular polygon is greater than the inner diameter of the tobacco pipe, and a gap allowing the flow of smoke is formed between the outer edge of the blocking member and the inner wall of the tobacco pipe.

[0024] When the blocking member is in the shape of a circular sheet, the outer diameter of the blocking member is greater than the inner diameter of the tobacco pipe, so that the isolation sheet and the tobacco pipe are in interference fit.

[0025] When the cigarette is smoked, the end close to the user's lips is referred to as the "proximal end", and the end away from the user's lips is referred to as the "distal end".

[0026] The above technical solutions can be freely combined, provided they do not contradict each other.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The present invention provides a sealing component with a central anti-tear seam. The function of the central anti-tear seam is: (1) When the cigarette of the present invention is heated by a central needle-type (or rod-type) heating device, when the central heating needle is inserted, the central isolation piece at the central anti-tear seam can easily deform without being torn; (2) After the central heating needle is inserted, the cross-shaped heating seam in the center of the central isolation piece and the central isolation piece at the central anti-tear seam can rely on the elasticity of the paper to restore the original shape or restore it to near the original shape, still sealing the particulate smoke-generating material in the cigarette and preventing contamination of the smoking device or the environment in which it is used.

[0029] 2. In the preferred technical solution, the isolation sheet is made of paper, which is more environmentally friendly than existing plastic isolation and sealing components and is conducive to the natural degradation of waste cigarettes.

[0030] 3. In the preferred technical solution, the sealing component of the present invention is designed with a central anti-tear seam, a middle anti-tear seam, and an end anti-tear seam in addition to the central anti-tear seam. The combined function of the central anti-tear seam, the middle anti-tear seam, and the end anti-tear seam is: (1) When the heating element of the heating device that is matched with the cigarette of the present invention is a sheet heating element or a cross-shaped heating element, when the heating element is inserted, the central isolation plate can adaptively deform along the direction of the central anti-tear seam, the middle anti-tear seam, and the end anti-tear seam using its own natural elasticity, so that the central isolation plate is not easily torn; (2) After the sheet heating element or the cross-shaped heating element is pulled out, the central isolation plate can rely on the elasticity of the paper to restore its original shape or restore it to near its original shape, still sealing the particulate smoke-generating material in the cigarette and preventing pollution of the smoking device or the environment in use; (3) At the same time, since the cross-shaped heating seam, the central anti-tear seam, and the middle anti-tear seam are not completely sealed, air is allowed to flow in during inhalation.

[0031] 4. Purpose of the pre-reserved notch on the annular plate: For cigarettes with a small diameter, the "+" shaped pre-reserved notch (especially this "+" shaped structure) can strengthen the radial strength of the annular plate 2 and prevent the annular plate and the central isolation plate from tearing; it also has a relative guiding effect on the plate heating element so that it can be accurately inserted into the "+" shaped heating seam. Attached Figure Description

[0032] Figure 1 The images show the front view and AA cross-sectional view of the sealing component in the first embodiment, with enlarged views within the circles.

[0033] Figure 2 The images show the front view and AA cross-sectional view of the sealing component in the second embodiment, with enlarged views within the circles.

[0034] Figure 3 The images show the front view and AA section view of the sealing component in the third embodiment, with enlarged views within the circles.

[0035] Figure 4 These are the axial main sectional view and left view of the granular cigarette in the fourth embodiment.

[0036] Figure 5 The images show the axial main sectional view and left view of the granular cigarette in the fifth embodiment.

[0037] List of reference numerals in the attached diagram:

[0038] 1. Central isolation plate; 11. Cross-shaped heating seam; 111. Central anti-tear seam; 112. Middle anti-tear seam; 113. End anti-tear seam; 2. Annular plate; 21. Cross-shaped reserved notch; I. Smoke generating section; II. Middle sealing component; III. Cooling section; IV. Filter section. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the embodiments.

[0040] Those skilled in the art will understand that the following embodiments are for illustrative purposes only and should not be construed as limiting the scope of the invention. Where specific techniques or conditions are not specified in the embodiments, they are performed in accordance with the techniques or conditions described in the literature in the field or according to the product instructions. Materials or equipment whose manufacturers are not specified are all conventional products that can be obtained by purchase.

[0041] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is “coupled” to another element, it can be directly coupled to the other element, or there may be intermediate elements. Furthermore, the term “coupled” as used herein can include wireless coupling.

[0042] In the description of this invention, unless otherwise stated, "a plurality of" means two or more. The terms "inner," "upper," "lower," etc., indicate the orientation or state relationship based on the orientation or state relationship shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0043] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "equipped with" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art will understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the meaning consistent with their meaning in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless defined as herein.

[0045] like Figure 1 A tear-resistant sealing member, the sealing member being sheet-shaped, comprising: an annular sheet 2 and a central spacer 1 bonded to one side of the annular sheet 2. "One side" refers to... Figure 1 The back side of the annular piece 2 is shown in the front view.

[0046] The annular piece 2 has a widened cross-shaped pre-reserved notch 21 in the center, and the four edges of the notch are rounded curves. The boundary lines of the cross-shaped pre-reserved notch 21 are all rounded curves without any broken lines, which can improve the support and prevent tearing at a certain point.

[0047] The purpose of the reserved notch is: 1. to strengthen the support of the annular plate 2 for the entire sealing component; 2. to provide relative guidance for the plate heating element.

[0048] A cross-shaped heating seam 11 is provided in the center of the central isolation plate 1, and the cross-shaped heating seam 11 is located in the center of the cross-shaped reserved gap 21.

[0049] In the center of the cross-shaped heating seam 11, there is a central tear-resistant seam 111 at a certain angle to the cross-shaped heating seam 11.

[0050] like Figure 1, in the first embodiment, the two central anti-tearing slits 111 are the two passing through the center of the "cross-shaped" heating slit 11. The two central anti-tearing slits 111 are arranged in a cross shape, and the two central anti-tearing slits 111 and the "cross-shaped" heating slit 11 together form a "rice-shaped". On each slit of the "cross-shaped" heating slit 11 extending along four directions from the center, 2 middle anti-tearing slits 112 and 1 end anti-tearing slit 113 at the end are arranged at intervals. The middle anti-tearing slits 112 and the end anti-tearing slits 113 are both perpendicular to the "cross-shaped" heating slit 11 connected thereto. The length of the central anti-tearing slit 111 is 1 / 10 of the length of the "cross-shaped" heating slit 11. Because the smaller the deformation amplitude of the paper is as it is farther away from the center of the "cross-shaped" heating slit 11, the length a of the end anti-tearing slit 113 is 0.5 to 0.8 times the length of the middle anti-tearing slit 112. The plugging member is in a circular sheet shape. The central isolation sheet 1 can be a thin paper of 40 to 100 g / m 2 and the annular sheet 2 can be a cardboard of 200 to 500 g / m 2 . The hardness of the annular sheet 2 is greater than that of the central isolation sheet 1.

[0051] The central anti-tearing slit 111, with its length being c, and its length being 1.2 to 2 times the diameter of the heating needle in the needle-type heating smoking device.

[0052] The functions of the central anti-tearing slit 111 are as follows: 1. When the cigarette of the present invention is heated by a center needle-type (or rod-type) heating smoking device, when the center heating needle is inserted, the part of the central isolation sheet 1 at the central anti-tearing slit 111 is prone to deform顺势 without being torn; 2. After the center heating needle is pulled out, the "cross-shaped" heating slit 11 in the center of the central isolation sheet 1 and the part of the central isolation sheet 1 at the central anti-tearing slit 111 can rely on the elasticity of the paper to restore to the original state or close to the original state, still blocking the particulate smoke-generating material in the cigarette and preventing pollution of the smoking device or the use environment.

[0053] The middle anti-tearing slit 112, with its length being b, and the recommended length being 1.2 to 1.5 times the thickness of the sheet-type heating element or the cross-shaped heating element in the sheet-type heating smoking device. The combined functions of the central anti-tearing slit 111, the middle anti-tearing slit 112 and the end anti-tearing slit 113 are as follows: 1. When the heating element of the heating smoking device supporting the cigarette of the present invention is a sheet-type heating element or a cross-shaped heating element, when the heating element is inserted, the central isolation sheet (paper) can make self-adaptive deformation along the directions of the central anti-tearing slit, the middle anti-tearing slit and the end anti-tearing slit by using its own natural elasticity, and the paper is not easily torn; 2. After the sheet-type heating element or the cross-shaped heating element is pulled out, the central isolation sheet 1 can rely on the elasticity of the paper to restore to the original state or close to the original state, still blocking the particulate smoke-generating material in the cigarette and preventing pollution of the smoking device or the use environment.

[0054] Meanwhile, since the "+" shaped heating seam 11, the central anti-tear seam 111, and the middle anti-tear seam 112 are not completely sealed, air is allowed to flow in during suction.

[0055] like Figure 2 In the second embodiment, the sealing component further includes another annular piece 2, which is bonded to the other side of the central isolation piece 1, so that the two annular pieces 2 sandwich the central isolation piece 1 in the middle. The two annular pieces 2 are identical in shape and their centers face each other. This makes the fixation of the central isolation piece 1 more robust, and the two annular pieces 2 provide better support in the flue.

[0056] like Figure 3 In the third embodiment, the sealing element is a regular polygonal sheet. Its advantage is that when the sealing element is entirely a regular polygonal sheet, the diameter of the circumscribed circle of the polygon is larger than the inner diameter of the flue, and a gap allowing flue gas to flow exists between the outer edge of the sealing element and the inner wall of the flue. The central anti-tear seam 111 has a length of c, which is 1.5 to 2 times the diameter of the heating needle in a needle-type heated smoking device, or 1.2 to 2 times the thickness of a sheet-type heating element or a cross-shaped heating element.

[0057] like Figure 4 The fourth embodiment provides a granular cigarette, which includes a cigarette tube. The cigarette tube contains, from the distal lip end to the proximal lip end, a smoke-generating section I, a central sealing element II, a cooling section III, and a filter section IV, arranged sequentially. The distal lip end of the cigarette tube is provided with the sealing element described in the third embodiment. That is, the distal lip end of the smoke-generating section I is sealed by the sealing element described in the third embodiment to prevent leakage of smoke particles. The cigarette tube is a paper tube. Figure 4 These are the axial main sectional view and A-A sectional view of the granular cigarette in the fourth embodiment. The central sealing component II is coaxially arranged with the cigarette tube. The central sealing component II is a hollow cylindrical structure with a transverse diaphragm inside. The outer diameter of the hollow cylindrical structure is approximately equal to or slightly larger than the inner diameter of the cigarette tube, so that the sidewall of the hollow cylindrical structure is interference-fitted with the inner wall of the cigarette tube. The transverse diaphragm blocks the smoke particles in the smoke-generating section I. The transverse diaphragm has vent holes. The size of the vent holes is smaller than the size of the smoke particles.

[0058] Figure 5 These are the axial main sectional view and A-A sectional view of the granular cigarette in the fifth embodiment. Figure 5 and Figure 4 The only difference is that the distal lip of the flue is provided with the sealing element described in the first embodiment.

[0059] Of course, the central sealing element II of the present invention can also adopt other structures, as long as it can block the smoke particles.

Claims

1. A granular cigarette, characterized in that, The granular cigarette includes a tobacco tube, a smoking section is arranged in the tobacco tube, and the following plugging member is arranged at the far lip end of the tobacco tube; The plugging member is sheet-shaped and includes: an annular sheet and a central isolation sheet arranged on one side of the annular sheet; Wherein, a "cross"-shaped reserved notch is arranged in the center of the annular sheet; A "cross"-shaped heating seam is arranged in the center of the central isolation sheet, and the "cross"-shaped heating seam is located in the center of the "cross"-shaped reserved notch; In the center of the "cross"-shaped heating seam, a central anti-tearing crack at a certain angle to the "cross"-shaped heating seam is opened, and the central anti-tearing crack is at least one passing through the center of the "cross"-shaped heating seam; the whole plugging member is a regular polygon sheet, the diameter of the circumcircle of the regular polygon is greater than the inner diameter of the tobacco tube, and there is a gap allowing the flow of flue gas between the outer edge of the plugging member and the inner wall of the tobacco tube; The plugging member further includes: another annular sheet, and the two annular sheets sandwich the central isolation sheet in the middle.

2. The granular cigarette according to claim 1, characterized in that, The central anti-tearing cracks are two arranged crosswise, and the central anti-tearing cracks and the "cross"-shaped heating seam together form a "rice" shape.

3. The granular cigarette according to claim 1, characterized in that, A number of middle anti-tearing cracks communicating with it are arranged on the "cross"-shaped heating seam.

4. The granular cigarette according to claim 1, characterized in that, End anti-tearing cracks communicating with it are arranged at the ends of the "cross"-shaped heating seam.

5. The granular cigarette according to claim 1, characterized in that, On each of the four-directional gaps along the "cross"-shaped heating seam from the center, 1 to 3 middle anti-tearing cracks and 1 end anti-tearing crack at the end are arranged at intervals.

6. The granular cigarette according to claim 5, characterized in that, The middle anti-tearing cracks and the end anti-tearing cracks are perpendicular to the "cross"-shaped heating seam communicating with them.

7. The granular cigarette according to claim 1, characterized in that, The length of the central anti-tearing crack is 1 / 20 to 1 / 2 of the length of the "cross"-shaped heating seam.

8. The granular cigarette according to claim 5, characterized in that, The length of the end anti-tearing crack is 0.5 to 0.8 times the length of the middle anti-tearing crack.

9. The granular cigarette according to claim 1, characterized in that, The material of the plugging member is selected from one or several composite materials of paper, polymer film, and aluminum foil.

10. The granular cigarette according to claim 1, characterized in that, Both the annular sheet and the central isolation sheet are made of paper, and the hardness of the annular sheet is greater than that of the central isolation sheet.

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