Special disposable filter cigarette holder suitable for cigars with different diameters
By using a sealed heat-shrink tube to heat-shrink the mouthpiece shell and a multi-layer filter structure, the problem of existing mouthpieces being unable to adapt to cigars of different diameters is solved, achieving stable installation and efficient filtration.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANXI HONGCARPENTER HANDICRAFT FACTORY
- Filing Date
- 2026-03-17
- Publication Date
- 2026-05-01
AI Technical Summary
Existing disposable filter mouthpieces cannot be securely fitted to cigars of different diameters. In particular, disposable mouthpieces for standard cigarettes cannot be fitted to cigars larger than 12–20 mm, and the lack of a reasonable installation structure makes the cigar mouthpiece prone to cracking.
A special disposable filter mouthpiece was designed, which includes a sealed heat-shrink tube and multiple filter structures. The sealed heat-shrink tube fits the mouthpiece shell with heat shrink, which can accommodate the insertion of cigars of different diameters. The mouthpiece is equipped with a combination filter structure of microporous filter core, filter cotton core, adsorbent carbon core and desiccant core.
It achieves a stable installation for cigars of different diameters, prevents cracking of the sucker mouth, and improves the filtration effect through a multi-layer filter structure, enhancing the ability to remove harmful substances such as tar and nicotine.
Smart Images

Figure CN121942972A_ABST
Abstract
Description
A special disposable filter mouthpiece suitable for cigars of different diameters Technical Field
[0001] This invention discloses a special disposable filter mouthpiece suitable for cigars of different diameters. Background Technology
[0002] Cigars can use disposable filter mouthpieces. Some disposable filter mouthpieces are designed for a universal diameter and can be used with cigars (especially smaller cigars). However, mainstream cigars are thicker, and disposable mouthpieces for standard cigarettes may not fit snugly. Disposable mouthpieces are designed for cigarettes (about 7-8mm in diameter), while cigars are commonly 12-20mm or larger in diameter. It is necessary to confirm whether the inner diameter of the mouthpiece matches. Disposable mouthpieces can reduce harmful substances such as tar and nicotine through physical filtration layers (such as activated carbon and sponge), and can also be used with cigars.
[0003] Currently available on the market are disposable or replaceable filter mouthpieces specifically designed for "1 cm cigars," containing activated carbon filters, suitable for slim cigars. Other disposable filter mouthpieces simply insert the cigar into a rigid mouthpiece, requiring sealing film and wrapping if necessary; however, the cigar mouthpiece is still prone to cracking. Furthermore, the lack of a suitable installation structure prevents flexible use with cigars of different diameters. Summary of the Invention
[0004] To address existing problems, this invention provides a dedicated disposable filter mouthpiece suitable for cigars of different diameters, comprising a mouthpiece shell and a filter component. A mouthpiece is connected to the rear end of the mouthpiece shell, and a connecting portion connects the mouthpiece and the rear end of the mouthpiece shell. The filter component is installed inside the mouthpiece shell. The invention is characterized by further including a sealing heat-shrink tube, one end of which is sealed and installed at the front end of the mouthpiece shell.
[0005] As a further limitation of the present invention, the filter component includes a microporous filter element, a filter cotton element, an adsorbent carbon element, and a desiccant element, and the filter component combination includes a primary filtration structure, a dual filtration structure, a triple filtration structure, and a quadruple filtration structure.
[0006] As a further limitation of the present invention, the primary filtration structure may be a microporous filter element, a filter cotton element, an adsorption element, or a desiccant element.
[0007] As a further limitation of the present invention, the dual filtration structure may be selected from any two of the following: microporous filter core, filter cotton core, adsorption core, and desiccant core.
[0008] As a further limitation of the present invention, the third combination structure may be any three of the following: microporous filter core, filter cotton core, adsorption core, and desiccant core.
[0009] As a further limitation of the present invention, the fourth combination structure is selected from four types in sequence: microporous filter element, filter cotton element, adsorption element, and desiccant element.
[0010] As a further limitation of the present invention, the sealing heat shrink tube and the front end of the mouthpiece housing include three mounting structures, namely the first mounting structure, the second mounting structure, and the third mounting structure.
[0011] As a further limitation of the present invention, the first type of mounting structure is fixed by heat shrinking or formed by hot pressing in one step.
[0012] As a further limitation of the present invention, the second installation structure involves directly fitting the sealing heat shrink tube onto the front end of the mouthpiece housing by means of the sealing heat shrink tube.
[0013] As a further limitation of the present invention, the third installation structure is provided with a fixing ring along the outer periphery of the front end of the mouthpiece shell, and a groove ring that heat-shrinks and fits with the fixing ring inside the sealing heat shrink tube.
[0014] The technical advantages of this invention are as follows: The sealed heat shrink tube is installed at the front end of the mouthpiece shell, making it convenient to insert cigars of the corresponding diameter into the sealed heat shrink tube. The sealed heat shrink tube is heat-shrinked and installed at the front end of the mouthpiece shell by heating with a lighter, preventing the cigar mouthpiece from cracking. It can also be used to shrink and install cigars of different diameters. The various combinations of filter components inside the mouthpiece shell also increase the flexible filtration function. Attached Figure Description
[0015] Figure 1 is a schematic diagram of the assembly structure of the mouthpiece shell and the sealing heat shrink tube in Figure 2.
[0016] Figure 2 is a schematic diagram of the exploded structure of the third installation structure.
[0017] Figure 3 is a schematic diagram of the exploded structure of the first and second installation structures.
[0018] Figure 4 is a schematic diagram of the primary filter structure.
[0019] Figure 5 is a schematic diagram of the dual-filter structure.
[0020] Figure 6 is a schematic diagram of the triple filtration structure.
[0021] Figure 7 is a schematic diagram of the quadruple filtration structure.
[0022] Figure 8 is a schematic diagram of the assembly structure in Figure 3.
[0023] In the diagram: mouthpiece shell 1, fixing ring 11, limiting ring 12, microporous filter core 21, filter cotton core 23, adsorption core 24, desiccant core 25, mouthpiece 3, connecting part 31, sealing heat shrink tube 4, groove ring 41, sealing heat shrink tube with adhesive on the inner wall 42, cigar 100. Detailed Implementation
[0024] Example 1, as shown in Figures 1-8, provides a dedicated disposable filter mouthpiece suitable for cigars of different diameters. It includes a mouthpiece shell 1 and a filter component 2. The mouthpiece shell is made of food-grade plastic, with an inner edge extending along its inner circumference at the front end. A mouthpiece 3 is connected to the rear end of the mouthpiece shell, and a connecting part 31 is provided between the mouthpiece and the rear end of the mouthpiece shell. The filter component is installed inside the mouthpiece shell. This structure can refer to existing disposable filter mouthpiece structures, such as the Wilo brand model 970 disposable mouthpiece. Currently, there are disposable or replaceable filter mouthpieces on the market specifically designed for "1 cm small cigars," containing activated carbon filters, suitable for slim cigars. However, some disposable filter mouthpieces only allow the cigar to be inserted into a rigid mouthpiece, requiring sealing film and wrapping when necessary, which still makes the cigar mouthpiece prone to cracking. Furthermore, the lack of a reasonable installation structure fails to meet the improved structure requirements for flexible use with cigars of different diameters. The improved structure primarily utilizes a heat-shrinkable fitting between the sealed heat-shrink tubing and the front end of the mouthpiece shell, allowing for flexible use with cigars of varying diameters. It also features multiple mounting options to meet diverse installation needs. Furthermore, it incorporates various filter structures, increasing filtration flexibility.
[0025] The structure of this application includes a hollow, through-hole, sealed heat-shrinkable tube 4. This tube can also be replaced with a sealed heat-shrinkable tube 42 with adhesive on its inner wall. The adhesive mainly covers the mating area between the sealed heat-shrinkable tube and the cigarette holder housing. With the adhesive inside, it can be directly glued to one end of the cigarette holder housing and then heat-sealed. One end of the sealed heat-shrinkable tube is heat-shrinked and sealed at the front end of the cigarette holder housing.
[0026] As an example of embodiment one, there are three installation structures for the heat-shrink fitting of the cigarette holder shell and the sealing heat-shrink tube: The first installation structure: The sealing heat-shrink tube is fixed to the front end of the cigarette holder shell by heat shrinking or heat-pressing. Heat shrinking involves shrinking the sealing heat-shrink tube to a suitable seal and fitting it to the front end of the cigarette holder shell. The heat-pressing structure involves heating the sealing heat-shrink tube with a lighter and heat-fusing it to the front end of the cigarette holder shell.
[0027] The first installation principle involves fitting a sealing heat shrink tube onto the retaining ring at the front end of the cigarette holder shell. After securing one end of the heat shrink tube with adhesive, a lighter is used to heat-shrink the tube inside the cigarette holder shell. The difference between heat-shrink fixing and heat-pressing is that the lighter used has a higher heat output, melting the heat shrink tube and the front end of the cigarette holder shell together to form a single, heat-pressed unit. Alternatively, a plastic injection molding machine can be used for one-time heat pressing.
[0028] In the second installation structure, the sealing heat shrink tube is directly glued to the front end of the mouthpiece shell without heating.
[0029] The sealing heat shrink tube in the first and second installation structures described above is preferably a sealing heat shrink tube with adhesive on the inner wall.
[0030] The third installation structure features a retaining ring 11 along the outer circumference of the front end of the cigarette holder shell, and a groove ring 41 inside the sealing heat shrink tube 4 that heat-shrinks with the retaining ring. The fourth structure's sealing heat shrink tube differs from the adhesive-lined sealing heat shrink tubes of the three structures described above. It facilitates fixed installation at one end and improves the sealing heat shrinkability of the tube.
[0031] The third type of installation principle: Select a sealing heat shrink tube according to the largest diameter cigar, put the cigar of the corresponding diameter into the sealing heat shrink tube, and seal the groove ring inside the sealing heat shrink tube onto the fixing ring at the front end of the mouthpiece shell to help fix one end of the sealing heat shrink tube, so that the lighter can seal and heat shrink the sealing heat shrink tube inside the mouthpiece shell.
[0032] As an example of a filter component, there are various filter structures, including a primary filter structure and an upgraded filter structure.
[0033] The filter components include a microporous filter element, a filter cotton element, an adsorption element, and a desiccant element.
[0034] A microporous filter cartridge is a precision filter element used to filter tiny particles, bacteria, and other suspended matter from liquids or gases.
[0035] A filter core is a deep filtration element that removes suspended particles, impurities, and microparticles from fluids through physical interception.
[0036] The adsorption core adsorbs substances through physical or chemical action, thereby achieving the purpose of purification, separation or recycling.
[0037] A desiccant core is a functional component that uses highly efficient moisture-absorbing material as its core and is encapsulated in a moisture-permeable package.
[0038] As shown in Figure 4, the primary filtration structure is as follows: the filtration component is one of a microporous filter element, a filter cotton element, an adsorption element, or a desiccant element.
[0039] The upgraded filter structure includes dual, triple, and quadruple filtration structures. As shown in Figure 5, the dual filtration structure is any combination of two of the filter components: a microporous filter element, a filter cotton element, an adsorption element, and a desiccant element. For example, the microporous filter element 21 and the filter cotton element 23 are installed inside the mouthpiece housing from front to back. In actual production, any combination of the two can be used according to actual needs, or the microporous filter element can be preferably located at the front end.
[0040] As shown in Figure 6, the triple filtration structure comprises any combination of three of the following: a microporous filter element, a filter cotton element, an adsorption element, and a desiccant element. For example, the microfiltration element, filter cotton element, and adsorption element can be arranged sequentially. In actual production, any combination of the three can be used according to actual needs, or preferably, the microporous filter element can be placed at the very front.
[0041] As shown in Figure 7, the filter component consists of four combinations in sequence: a microporous filter element, a filter cotton element, an adsorption element, and a desiccant element. The installation direction is from front to rear, and the four combinations can be arranged sequentially.
[0042] Microporous filter core: Used to intercept large e-liquid droplets, suitable as the first layer.
[0043] Filter cotton core (such as PP cotton): can further trap fine suspended matter and is used for pre-filtration.
[0044] Adsorption carbon core (such as activated carbon): effectively adsorbs tar, odors and some organic matter, and is a common material in the middle and back layers.
[0045] Desiccant core: can absorb moisture and reduce the humidity of flue gas.
[0046] The working principle of the above structure is as follows: After inserting the cigar 100 into the heat-shrinkable tube, the heat-shrinkable tube is selected to fit the largest diameter cigar. The heat-shrinkable tube, fitted with the corresponding diameter cigar, is heated from front to back using a lighter flame. The heat-shrinkable tube can employ one of the three installation structures described in this embodiment: a heat-shrinkable fit between the mouthpiece shell and the heat-shrinkable tube. These will not be described in detail again here. Thus, the heat-shrinkable tube is generally heat-shrinked to a size suitable for the cigar diameter. After heat-shrinking according to different cigar diameters, one end of the cigar is tightly sealed inside the heat-shrinkable tube, achieving the purpose of sealing the interface between the cigar and the mouthpiece shell to accommodate cigars of different diameters.
[0047] The shrink-wrap principle of heat-shrink tubing is to heat it to tightly wrap the end of a cigar of the corresponding diameter. Its core principle is heating to expand and then rapidly cooling to set its shape. Ensure that the inner diameter of the heat-shrink tubing before shrinking is larger than the diameter of the object being wrapped, such as a cigar, so that it can fit tightly after shrinking. Pre-fit the heat-shrink tubing onto the part to be protected, i.e., the front end of the mouthpiece shell. Use a lighter to heat it axially, starting from one end, while simultaneously rotating the mouthpiece shell to ensure even heating.
[0048] The filter element installed inside the mouthpiece housing can be either the primary filter structure or the upgraded filter structure described above.
[0049] It should be noted that the above preferred embodiments are merely illustrative of the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.
Claims
1. A disposable filter mouthpiece suitable for cigars of different diameters, comprising a mouthpiece shell and a filter component, wherein a mouthpiece is connected to the rear end of the mouthpiece shell, a connecting portion connects the mouthpiece and the rear end of the mouthpiece shell, and the filter component is installed inside the mouthpiece shell, characterized in that: It also includes a sealed heat shrink tube, one end of which is sealed and installed at the front end of the mouthpiece housing.
2. The disposable filter mouthpiece suitable for cigars of different diameters as described in claim 1, characterized in that: The filter components include a microporous filter element, a filter cotton element, an adsorption element, and a desiccant element. The filter component combinations include primary filtration structures, dual filtration structures, triple filtration structures, and quadruple filtration structures.
3. The disposable filter tip for cigars of different diameters as described in claim 2, characterized in that: The primary filtration structure may be a microporous filter element, a filter cotton element, an adsorption element, or a desiccant element.
4. The disposable filter tip for cigars of different diameters as described in claim 2, characterized in that: The dual filtration structure can be any two of the following: microporous filter element, filter cotton element, adsorption element, and desiccant element.
5. The disposable filter tip for cigars of different diameters as described in claim 2, characterized in that: The triple filtration structure can be any three of the following: microporous filter element, filter cotton element, adsorption element, and desiccant element.
6. The disposable filter mouthpiece suitable for cigars of different diameters as described in claim 2, characterized in that: The four-stage filtration structure uses four types of filters in sequence: microporous filter element, filter cotton element, adsorbent carbon element, and desiccant element.
7. The disposable filter tip for cigars of different diameters as described in claim 1, characterized in that: The sealed heat shrink tube and the front end of the mouthpiece shell include three installation structures, namely the first installation structure, the second installation structure, and the third installation structure.
8. The disposable filter tip for cigars of different diameters as described in claim 7, characterized in that: The first type of mounting structure is fixed by heat shrinking or formed in one step by hot pressing.
9. The disposable filter tip for cigars of different diameters as described in claim 7, characterized in that: The second installation structure involves directly fitting the sealing heat shrink tube onto the front end of the mouthpiece housing.
10. The disposable filter mouthpiece for cigars of different diameters as described in claim 7, characterized in that: The third installation structure has a fixing ring set along the outer periphery of the front end of the mouthpiece shell, and a groove ring that heat-shrinks and fits with the fixing ring inside the sealing heat shrink tube.