Smoke-control thick moxa stick integrally rolled by multiple layers of kraft paper

Abstract

The invention relates to a smoke-control coarse moxa stick integrally rolled by multiple layers of kraft paper, and belongs to the technical field of traditional Chinese medicine instruments. According to the moxa stick, 3-6 layers of kraft paper are adopted to directly wrap moxa to form an integrated structure, a traditional double-layer process of thin paper roll core and thick paper tube is replaced, the length of a final product is 150-250 cm, and the diameter of the final product is 5-10 cm. By controlling the layer number of the kraft paper, the rolling compactness and the breathable micro-pore design, the breathability is ensured while the structural strength is maintained, and the moxa is fully combusted. The combustion time can reach 15-18 hours, the center temperature is stabilized in a low-temperature interval of 180-220 DEG C, and the residue rate and the smoke amount are remarkably reduced. The preparation method comprises the steps of kraft paper cutting (the width is 2.05-2.5 times of the length of a moxa stick), adhesive coating (the adhesive width is 1-3 cm), multi-roller synchronous rolling and pressing and cutting forming, the production process is simplified, and addition of a smoke control additive is avoided. According to the scheme, the problems that a traditional technology is tedious in procedure, insufficient in combustion and large in smoke are solved, and the method is suitable for large-scale production of thick moxa sticks with the diameter being 5-10 cm.

Description

Technical Field

[0001] This invention relates to the field of traditional Chinese medicine medical device technology, specifically to a smoke-controlling coarse moxa stick made of multi-layer kraft paper rolled in one piece. Background Technology

[0002] Traditional thick moxa sticks typically use thin cotton paper or mulberry bark paper to wrap moxa wool to form the inner core, which is then encased in a thick paper tube. The inner wall of the thick paper tube is further covered with a layer of non-combustible tin foil for flame retardancy, creating a double-layer structure. This process requires multiple steps to complete the inner core rolling and outer tube assembly, making it cumbersome and reliant on manual labor, resulting in high production costs and low efficiency. While the outer thick paper tube can control the burning speed, it excessively isolates oxygen, often causing the edge moxa wool to carbonize, forming an unburned residue layer. Furthermore, incomplete combustion produces a large amount of smoke, affecting the user experience and environmental safety.

[0003] Existing improvement solutions mainly focus on adding smoke-controlling agents (such as charcoal powder) or optimizing the ignition coating, but they do not address the fundamental defects of the double-layer structure. For example, while opening holes in the thick paper tube can improve air permeability, it weakens the structural strength; and the composite tin foil flame-retardant layer increases material costs and process complexity. Especially for thick moxa sticks with a diameter greater than 5 cm, existing processes struggle to balance the contradiction between structural strength and combustion completeness. Therefore, there is an urgent need for an integrated solution that can simultaneously simplify the process and improve combustion performance. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the prior art, the inventors have proposed the present invention.

[0006] Therefore, the purpose of this invention is to overcome the shortcomings of the prior art and provide a smoke-controlling coarse moxa stick made of multi-layer kraft paper in one piece.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a multi-layer kraft paper integrally rolled smoke-controlling moxa stick, comprising a cylindrical moxa core and a multi-layer kraft paper tube integrally rolled around its outer periphery. The kraft paper tube is formed by directly rolling and bonding 3-6 layers of kraft paper with a basis weight of 50-120 g / m², with a total thickness of 0.3-0.8 mm, and the density of the moxa core is 0.25-0.58 g / cm³. 3 .

[0008] As a preferred embodiment of the multi-layer kraft paper integrally rolled smoke-control moxa stick described in this invention, the surface of the kraft paper tube is provided with breathable micropores, with a pore diameter of 0.1-0.5mm and a pore density of 5-20 pores / cm². 2 .

[0009] As a preferred embodiment of the multi-layer kraft paper integrally rolled smoke-controlling moxa stick described in this invention, wherein: the breathable micropores are staggered between adjacent kraft paper layers, with an offset distance of 1.5-3 times the pore diameter.

[0010] As a preferred embodiment of the multi-layer kraft paper integrated roll of the present invention, the adhesive seam of the kraft paper tube is made of food-grade starch glue or plant glue, and the glue layer width is 1-3cm.

[0011] As a preferred embodiment of the multi-layer kraft paper integrated roll of smoke-controlling thick moxa stick described in this invention, the moxa core is composed of Qichun moxa wool, with a volatile oil content ≥0.8mL / 100g and a fiber length of 1-3cm accounting for ≥70%.

[0012] A method for preparing a smoke-controlling coarse moxa stick made of multi-layer kraft paper in one piece includes the following steps:

[0013] S1. Cut the kraft paper into rectangular pieces with a width equal to 2.05-2.5 times the length of the target moxa stick; cut 120g kraft paper into 20cm x 50cm pieces for later use; put 1-3 pieces of kraft paper cut into 20cm x 50cm pieces into the moxa stick machine; weigh the moxa wool and put it into the kraft paper inside the moxa stick machine; roll the machine to produce qualified 6-8cm moxa sticks.

[0014] The final product is a large moxa stick for smoke control, approximately 200 cm long and 6-8 cm in diameter.

[0015] S2. Apply a longitudinal adhesive line with a width of 1-3 cm to one edge of the paper sheet;

[0016] S3. A three-roller winding device is used to evenly spread the moxa wool on the paper sheet. The moxa wool is then rolled in multiple layers of kraft paper by roller pressing, with a winding pressure of 0.2-0.5 MPa.

[0017] S4. Finally, prepare a large moxa stick for smoke control that is about 200 cm long and about 6-8 cm in diameter.

[0018] As a preferred embodiment of the preparation method of the smoke-controlling coarse moxa stick made of multi-layer kraft paper in one piece according to the present invention, in step S, moxa wool is stuffed into the moxa stick machine, multi-layer kraft paper is placed in, and the rolling speed is 2-5m / min.

[0019] As a preferred embodiment of the preparation method of the smoke-controlling thick moxa stick made of multi-layer kraft paper in one piece according to the present invention, wherein: before applying glue in step S2, the kraft paper is perforated, and the perforation depth is 70-90% of the thickness of a single layer of paper.

[0020] As a preferred embodiment of the preparation method of the smoke-controlling coarse moxa stick made of multi-layer kraft paper in one piece according to the present invention, in step S3, the thickness of the moxa wool is 1.2-1.5 times the diameter of the finished product.

[0021] As a preferred embodiment of the preparation method of the multi-layer kraft paper integrated roll smoke-control moxa stick described in this invention, the method involves: cutting 120g kraft paper into 20cm x 50cm sizes for later use; placing 1-3 pieces of kraft paper cut into 20cm x 50cm sizes into a moxa stick machine; weighing moxa wool and placing it into the kraft paper inside the moxa stick machine; and then rolling the machine to produce qualified 6-8cm moxa sticks, ultimately preparing large smoke-control moxa sticks approximately 200cm long and 6-8cm in diameter.

[0022] The beneficial effects of this invention are as follows: By using multi-layer kraft paper in a single roll, the traditional double-layer structure is eliminated. The multi-layer kraft paper forms a self-supporting cylinder during the rolling process, eliminating the need for a sleeve, improving production efficiency, and reducing labor costs. The unique air permeability and controllable layer thickness design of kraft paper allow oxygen to penetrate appropriately to the combustion interface, preventing edge carbonization, significantly reducing residue, and decreasing smoke generation without relying on chemical smoke suppressants.

[0023] The coordinated control of pressure and temperature during the rolling process ensures uniform moxa wool density and tight paper layer bonding, resulting in a stable flame and no risk of flameout during combustion. The staggered micropore design further optimizes the oxygen diffusion path, enhancing the completeness of combustion. In addition, the integrated structure improves the flexibility of the thick moxa stick, making it more suitable for moxibustion on curved parts of the human body and solving the problem of traditional thick paper tubes being prone to breakage when bent. Detailed Implementation

[0024] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the examples in the specification.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0027] Example 1

[0028] This embodiment provides a smoke-controlling thick moxa stick made of multi-layer kraft paper in one piece, verifying the feasibility of the process of making a three-layer kraft paper integrated roll and the effect of improving combustion performance, and focusing on solving the problem of complex process of traditional double-layer structure.

[0029] Material configuration:

[0030] Artemisia floss core material: Selected three-year aged Artemisia floss leaves from Qichun, Hubei Province, which are dried and crushed to a 20-mesh sieve, retaining 75% of the 1-3cm fiber and 1.0mL / 100g of volatile oil content;

[0031] Kraft paper substrate: 70 g / m², tensile strength 4.5 kN / m, air permeability 300 mL / min (ISO 5636-5 standard), cut into 200 mm × 410 mm rectangular sheets (width is 2.05 times the finished length of 200 mm);

[0032] Adhesive: Food-grade corn starch adhesive, solid content 25%, viscosity 800 cP (25℃).

[0033] Rolling process:

[0034] Glue application process: Apply a continuous glue line with a width of 2cm to the long edge of the kraft paper, and use a slot coater to control the glue layer thickness to 0.1mm;

[0035] Laying down: Evenly spread the moxa wool in the center of the paper sheet, to a thickness of 25mm (1.25 times the diameter of the finished product of 20mm), with a density controlled at 0.45g / cm³. 3 ;

[0036] Roll forming:

[0037] Equipment: Three-roll winding device, with hard chrome plating on the roller surface to reduce the coefficient of friction;

[0038] Parameters: Roller temperature 70℃, pressure 0.3MPa, speed 3m / min;

[0039] Process: The paper feed roller pulls the kraft paper into the winding and pressing area. The kraft paper is wrapped by 3 layers of kraft paper (total thickness 0.5mm) under radial pressure, and the overlap width of the adhesive seam is 2mm.

[0040] End treatment: Cut to a length of 200mm, and seal both ends with a hot press plate at 90℃ / 0.2MPa.

[0041] As a preferred method, setting the winding pressure to 0.3MPa can balance the compactness and air permeability of the paper tube: when the pressure is below 0.2MPa, the interlayer bonding is not strong, and when it is above 0.5MPa, the air permeability decreases by more than 15%.

[0042] Effect verification:

[0043] Combustion performance: The burning time reaches more than 15 hours (compared to only 5-6 hours for traditional moxa sticks of the same size), and the residue is grayish-white powder with a residue rate of 4.7%.

[0044] Smoke control: The amount of smoke is reduced by more than 50% compared to traditional processes, and there is no irritating odor.

[0045] Temperature characteristics: The central combustion temperature is 190-210℃, which falls under the category of low-temperature moxibustion;

[0046] Product specifications: The final product is a large moxa stick for smoke control, approximately 200 cm long and 6-8 cm in diameter, weighing approximately 550 grams;

[0047] Process efficiency: By eliminating the sleeve process, the processing time per piece is reduced from 45 seconds to 28 seconds.

[0048] Example 2

[0049] This embodiment provides a smoke-controlling thick moxa stick made of multi-layer kraft paper in one piece, verifying the enhancing effect of misaligned micropores on combustion completeness and solving the problem of edge carbonization.

[0050] Improvements based on Example 1:

[0051] Substrate pretreatment:

[0052] A needle roller perforator is used to pre-process micropores in kraft paper, with a pore diameter of 0.3 mm and a pore density of 15 pores / cm². 2 ;

[0053] As one implementation method, the perforation depth is 80% of the thickness of a single layer of paper (0.12mm) to ensure that the micropores are connected but not broken;

[0054] Adjustment of rolling process:

[0055] The thickness of the pile has been increased to 28mm;

[0056] The rolling pressure is increased to 0.4 MPa to enhance interlayer bonding.

[0057] Key innovation: The micropore centers of adjacent kraft paper layers are offset by 0.5mm, forming staggered airflow channels;

[0058] End treatment optimization: Before hot pressing, spray the end face with 5% hydroxyethyl cellulose solution to prevent micropore blockage.

[0059] The technical principle of misaligned micropores:

[0060] Furthermore, the staggered design avoids direct alignment of interlayer channels, allowing oxygen to diffuse through a tortuous path:

[0061] Hole location in layer 1: ●○●○●

[0062] Layer 2 borehole position: ○●○●○ (offset by 1.67 times the borehole diameter)

[0063] This structure prolongs the oxygen residence time, promotes full oxidation of the moxa floss edges, and inhibits the formation of carbon layers.

[0064] Comparison results:

[0065] Residue rate: reduced to 3.1% (4.7% in Example 1, >15% in conventional process);

[0066] Combustion uniformity: Axial temperature difference ≤25℃ (thermocouple measurement), no localized carbonization areas;

[0067] Combustion time: extended to 16-18 hours, with temperature stabilized in the low-temperature range of 180-220℃;

[0068] Smoke characteristics: The color of the smoke changes with the body's condition, confirming the diagnostic properties mentioned by the inventor;

[0069] Improved air permeability: The air permeability of the paper tube increased from 300 mL / min to 380 mL / min (unperforated control).

[0070] Example 3

[0071] This embodiment provides a smoke-controlling thick moxa stick made of multi-layer kraft paper in one piece, verifying the bending adaptability of 5 layers of thin kraft paper to a thick moxa stick with a diameter of 6-8 cm.

[0072] Special configuration and process:

[0073] Material selection:

[0074] Kraft paper was changed to 60g / ㎡, rolled in 5 layers, with a total thickness of 0.45mm;

[0075] Preferably, adding 5% mulberry bark fiber pulp increases flexural strength by 30%;

[0076] Adjusting winding parameters:

[0077] The thickness of the pile has been increased to 70mm;

[0078] The coiling pressure is 0.25 MPa to avoid excessive tightness that could reduce flexibility.

[0079] End face stepped hot pressing:

[0080] First stage: Pre-compression at 100℃ / 0.1MPa for 5 seconds to soften paper fibers;

[0081] Second stage: Set at 80℃ / 0.2MPa for 10 seconds to form a dense end face.

[0082] Bending performance verification:

[0083] Test method: Place the burning moxa stick on an arc-shaped support with a radius of 80mm (simulating the curvature of human joints);

[0084] result:

[0085] The paper tube did not crack (traditional thick paper tubes break at a radius of 150mm);

[0086] The combustion process does not extinguish, and it continues to burn for more than 15 hours.

[0087] Low temperature characteristics: The core temperature is maintained at around 200℃, with strong penetrability. During moxibustion, the whole body sweats but the skin temperature remains comfortable.

[0088] Energy characteristics: A noticeable energy field can be felt even when it is not burning, confirming the magnetic field characteristics mentioned by the inventor.

[0089] As a comparative experiment: Under the same conditions, the moxa stick made of 3 layers of 70g / ㎡ kraft paper showed micro-cracks when bent, confirming the necessity of the 5-layer thin weight design for thick moxa sticks.

[0090] This solution achieves a performance balance that traditional double-layer processes cannot reach through the coupling of material properties and structural design. The unique fibrous interwoven structure of kraft paper gives it moderate air permeability and mechanical strength, while the self-supporting cylinder formed by multi-layer rolling essentially constructs a dynamic oxygen regulation system: when the burning of moxa wool consumes oxygen, external air continuously permeates through the micropores and interlayer gaps of the kraft paper, forming a stable low-oxygen diffusion environment.

[0091] This breathability is different from the rapid combustion of traditional thin cotton paper (excess oxygen) and the suffocating combustion of thick paper tubes (oxygen isolation). Instead, it achieves a dynamic balance between the oxygen supply rate and the combustion rate through the precise matching of the paper layer thickness (0.3-0.8mm) and the micropore distribution (misaligned design).

[0092] The misaligned micropores in Example 2 further extend the oxygen diffusion path, creating a turbulent effect at the microscopic level and promoting thorough oxidation of the moxa wool at its edge. This is the fundamental reason for the significant reduction in residue rate. Combining the test results of Examples 1 and 3, this structure extends the burning time to over 15 hours while controlling the core temperature within a low-temperature range of 180-220℃, effectively avoiding the irritation of the skin by high-temperature heat effects and solving the problem of easy heat-related issues associated with traditional moxibustion.

[0093] The superiority of the integrated rolling process lies not only in the reduction of steps, but also in the optimization of mechanical and thermal transfer. In traditional double-layer structures, there is a physical gap between the thick paper tube and the inner moxa stick, resulting in significant heat loss during conduction through the air layer and causing discontinuous combustion. In contrast, the multi-layer kraft paper adheres tightly to the moxa wool during the rolling process (density 0.25-0.58 g / cm³). 3 This creates a direct heat conduction path, making the flame propagation more stable. At the same time, the coordinated control of rolling pressure and temperature activates the plastic deformation ability of kraft paper fibers, causing them to stretch directionally under roller extrusion and enhancing interlayer bonding.

[0094] Example 3 employs a flexible design using 5 layers of thin, lightweight paper. This utilizes the elastic recovery properties of kraft paper under low-pressure rolling to give the thick moxa sticks bending resistance, solving the problem of brittle breakage inherent in traditional thick paper tubes. This structural characteristic ensures that large-sized moxa sticks (5-10 cm in diameter) can adapt to the curved surfaces of the human body in practical use while maintaining combustion stability, achieving a "foolproof" technical effect.

[0095] The ash from the burning kraft paper in this method mainly consists of calcium carbonate and plant fiber ash. Its alkaline environment neutralizes the acidic volatiles produced by the burning of mugwort, reducing respiratory irritation. More importantly, the breathable combustion control method avoids the destruction of the effective components of mugwort—eucalyptol and camphor volatile oils in the mugwort floss—by high-temperature pyrolysis. These oils have a boiling point between 150-200℃ and are easily decomposed under the localized high temperatures caused by traditional thick paper tubes. This method, however, stabilizes the combustion zone temperature at 250-300℃ through oxygen flow control, satisfying the ignition requirements of the mugwort floss while protecting the heat-sensitive medicinal substances (as evidenced by the absence of irritating odor in the smoke of Example 2). This ecological adaptability allows the "warming and unblocking meridians" pharmacological effect of moxibustion to be fully released, while achieving low-smoke characteristics. The smoke color exhibits different characteristics depending on the body's condition, providing a visual reference for moxibustion diagnosis.

[0096] From an industry perspective, the compatibility of the integrated rolling process provides a standardized transformation path for moxa stick production. The three-roller winding device can be directly adapted to existing moxa rolling machines, and pre-treatment processes such as punching and gluing can also be integrated into the production line. Crucially, the multi-layer structure allows for flexible adaptation to different diameter requirements by adjusting the number of paper layers—for example, thin moxa sticks can use 3 layers of paper to maintain burning speed, while thicker moxa sticks use 5-6 layers to improve structural stability. This modular design solves the rigid limitation of "one specification, one mold" in traditional processes. Compared to "patchwork" improvements such as adding flame retardants or composite coatings, this solution reconstructs the moxa stick combustion system at the physical structural level. Its technological paradigm is expected to drive the industry from experience-based processing to parametric manufacturing, and is particularly suitable for the large-scale production of large moxa sticks with diameters of 5-10 cm and weights of 500-600 grams.

[0097] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A multi-layered kraft paper integrated roll for smoke control, characterized in that: It includes a cylindrical moxa wool core and a multi-layered kraft paper tube integrally rolled around its outer perimeter. The kraft paper tube is formed by directly rolling and bonding 3-6 layers of kraft paper with a basis weight of 50-120 g / m², with a total thickness of 0.3-0.8 mm. The density of the moxa wool core is 0.25-0.58 g / cm³. 3 .

2. The smoke-controlling coarse moxa stick made of multi-layer kraft paper in one piece as described in claim 1, characterized in that: The surface of the kraft paper tube is provided with breathable micropores.

3. The smoke-controlling coarse moxa stick made of multi-layer kraft paper in one piece as described in claim 1, characterized in that: The breathable micropores are staggered between adjacent kraft paper layers, with an offset distance of 1.5-3 times the pore diameter.

4. The smoke-controlling coarse moxa stick made of multi-layer kraft paper in one piece as described in claim 1, characterized in that: The adhesive seams of the kraft paper tubes are made of food-grade starch glue or plant glue, with a glue layer width of 1-3cm.

5. The smoke-controlling coarse moxa stick made of multi-layer kraft paper in one piece as described in claim 1, characterized in that: The moxa core is made of moxa wool, with a volatile oil content of ≥0.8mL / 100g and a fiber length of 1-3cm accounting for ≥70%.

6. A method for preparing a multi-layer kraft paper integrally rolled smoke-control moxa stick as described in any one of claims 1-5, characterized in that... Includes the following steps: S1. Cut the kraft paper into rectangular pieces with a width equal to 2.05-2.5 times the length of the target moxa stick; cut 120g kraft paper into 20cm x 50cm pieces for later use; put 1-3 pieces of kraft paper cut into 20cm x 50cm pieces into the moxa stick machine; weigh the moxa wool and put it into the kraft paper inside the moxa stick machine; roll the machine to produce qualified 6-8cm moxa sticks. The final product is a large moxa stick for smoke control, approximately 200 cm long and 6-8 cm in diameter. S2. Apply a longitudinal adhesive line with a width of 1-3 cm to one edge of the paper sheet; S3. A three-roller winding device is used to evenly spread the moxa wool on the paper sheet. The moxa wool is then rolled in multiple layers of kraft paper by roller pressing, with a winding pressure of 0.2-0.5 MPa. S4. Finally, prepare a large moxa stick for smoke control that is about 200 cm long and about 6-8 cm in diameter.

7. The method for preparing a multi-layer kraft paper integrated roll of smoke-controlling coarse moxa stick as described in claim 6, characterized in that: Step S: Stuff the moxa wool into the moxa stick machine, add multiple layers of kraft paper, and roll at a speed of 2-5 m / min.

8. The method for preparing a multi-layer kraft paper integrated roll of smoke-controlling coarse moxa stick as described in claim 6, characterized in that: Before applying the glue in step S2, the kraft paper is perforated to a depth of 70-90% of the thickness of a single layer of paper.

9. The method for preparing a multi-layer kraft paper integrally rolled smoke-controlling coarse moxa stick as described in claim 6, characterized in that: In step S3, the thickness of the moxa wool layer should be 1.2-1.5 times the diameter of the finished product.

10. The method for preparing a multi-layer kraft paper integrally rolled smoke-controlling coarse moxa stick as described in claim 6, characterized in that: Cut 120g kraft paper into 20cm x 50cm pieces and set aside. Place 1-3 pieces of kraft paper cut into 20cm x 50cm pieces into the moxa stick machine. Weigh the moxa wool and put it into the kraft paper inside the machine. Roll the machine to produce qualified 6-8cm moxa sticks. Finally, prepare large smoke-control moxa sticks that are about 200cm long and about 6-8cm in diameter.