Bamboo button and processing method

Abstract

The application relates to the technical field of bamboo products, in particular to a bamboo button and a processing method, which are processed and formed first and then subjected to nitrogen atmosphere heat treatment; the processing and forming comprises button blank processing and button forming; the cutter rotating speed of the button blank processing is 8000-12000 r / min, and the feeding amount is 0.12-0.18 mm / r; the cutter rotating speed of the button forming is 6000-9000 r / min, and the feeding amount is 0.03-0.07 mm / r; the nitrogen atmosphere heat treatment comprises the following steps: heat treatment is carried out under the conditions of nitrogen protection and 140 DEG C-220 DEG C. By increasing the rotating speed and reducing the feeding amount, the product quality can be effectively improved, and the cutter wear rate is reduced. By processing and forming first and then subjecting to nitrogen atmosphere heat treatment, the product yield is further improved, the cutter wear rate is reduced, meanwhile, the influence of moisture in the processing process can be avoided, finally, the bamboo button with the advantages of uniform color, good size stability, antibiosis, wear resistance and mildew resistance can be obtained.

Description

Technical Field

[0001] This invention relates to the field of bamboo products technology, and in particular to a bamboo button and its processing method. Background Technology

[0002] Bamboo is characterized by its short growth cycle, high yield, high strength, environmental friendliness, and renewability, making it suitable for furniture and building materials. Designing and manufacturing bamboo buttons, which are then used in clothing, aligns with the current trend of integrating traditional Chinese culture into fashion design. Bamboo buttons not only promote the development of the bamboo industry and broaden the application areas of bamboo products, but also pave a new path for "replacing plastic with bamboo."

[0003] Currently, the processing technology and techniques for bamboo buttons are not mature. In terms of processing technology, the production methods used for plastic buttons are mainly adopted, resulting in a yield rate of less than 60% and extremely high tool consumption (one tool per day). Plastic buttons are produced by uniformly mixing unsaturated polyester resin and colorant during processing, resulting in a homogeneous material. Furthermore, the blanking process is performed before the material is fully cured, leading to relatively low hardness. Bamboo, on the other hand, has a gradient structure consisting of bamboo green, bamboo flesh, and bamboo yellow, making it a heterogeneous material with greater hardness. Using the same tungsten carbide and precision steel tools, speeds, and feed rates for processing plastic buttons on bamboo buttons easily produces burrs, chipped corners, and chipped edges. Tool selection and optimization of speed and feed rates must be based on the properties of the bamboo. In addition, plastic buttons are polished using a wet polishing process, which is unsuitable for bamboo due to its sensitivity to moisture.

[0004] In terms of processing techniques, most bamboo buttons are waxed, dyed, or varnished after processing to preserve their natural characteristics while providing protection. A few are partially carbonized by burning to give the surface more patterns and colors. However, these methods do not fundamentally alleviate the problems inherent in bamboo. As a natural biomass material, bamboo contains a large amount of sugar and nutrients. After being processed into bamboo buttons, it is prone to mold growth during production and daily use, greatly reducing the lifespan of the buttons and clothing. Bamboo also naturally contains some color-producing substances. After washing or rinsing, these substances gradually dissolve or react with the active ingredients in soap or rinsing solutions, leading to color variations in the bamboo buttons and posing a risk of staining clothing, thus affecting the consumer experience. Using chemical agents for treatment requires consideration of production costs and environmental impact. Furthermore, due to differences in growth years, origin, part of the bamboo, and the degree of removal of green and yellow pigments, the processed bamboo buttons will have color variations, which is detrimental to quality inspection and sales within the same batch. Moreover, existing technologies typically employ a carbonization process before processing when manufacturing bamboo products. However, this method causes the bamboo strips to harden, resulting in a lower yield and wear on cutting tools, making it unsuitable for the large-scale production of bamboo buttons.

[0005] Therefore, it is necessary to provide an improved bamboo button and its processing method to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a bamboo button and a processing method, which adopts a process of first forming and then nitrogen atmosphere heat treatment, while optimizing parameters such as tool speed and feed rate, to significantly improve the yield and product quality, resulting in bamboo buttons with uniform color, good dimensional stability, antibacterial properties, and wear resistance.

[0007] To achieve the above objectives, the present invention provides a method for processing bamboo buttons, comprising: first processing and shaping followed by nitrogen atmosphere heat treatment; the processing and shaping includes processing the button blank (button blank) and button forming;

[0008] The cutting tool speed for processing the button blank is 8000-12000 r / min, and the feed rate is 0.12-0.18 mm / r; the cutting tool speed for forming the button is 6000-9000 r / min, and the feed rate is 0.03-0.07 mm / r.

[0009] The nitrogen atmosphere heat treatment includes: heat treatment under nitrogen protection and at 140℃-220℃.

[0010] This invention effectively improves product quality and reduces tool wear by increasing rotational speed and reducing feed rate. The method of first shaping the bamboo strips and then performing nitrogen atmosphere heat treatment has several advantages: firstly, carbonized bamboo strips become hard and brittle, leading to decreased yield and more severe tool wear; secondly, it saves energy and is not limited by the length of the bamboo strips; and thirdly, it avoids the influence of moisture during processing. Nitrogen atmosphere heat treatment removes most of the sugars and extractives from the bamboo and kills insects and fungi, fundamentally eliminating their habitat and alleviating problems such as mold growth and leachate during cleaning in bamboo buttons.

[0011] Furthermore, the nitrogen atmosphere heat treatment includes: a nitrogen flow rate of 0.1-0.5 L / min, heating to 140℃-220℃ at a heating rate of 3-10℃ / min, and holding at that temperature for 2-4 hours. Under the high temperature of the nitrogen atmosphere, the bamboo is carbonized, resulting in a more uniform color on the surface of the bamboo buttons, less color difference between buttons in the same batch, which is beneficial for matching with clothing and provides more color options. In addition, the bamboo buttons exhibit superior performance compared to untreated bamboo buttons, significantly extending their service life. Although the nitrogen atmosphere heat treatment results in a loss of some mechanical properties, it significantly improves the usability of the bamboo buttons.

[0012] Furthermore, the cutting tools used for processing the button blank and forming the button are high-speed steel knives or diamond knives; in terms of tool selection, based on the properties of bamboo, high-speed steel knives or diamond knives with greater hardness, better wear resistance, and better high-temperature resistance are used.

[0013] And / or, the cutting tools for processing the button blank are replaced every 5-8 days; the cutting tools for button forming are replaced every 10-15 days. Compared to the prior art where tools are replaced daily, this invention can significantly improve the service life of the cutting tools and also improve the product yield. The breakage rate for button blank processing is less than 15%, preferably less than 12%. The breakage rate for button forming is less than 10%, preferably 5-8%, and the overall yield can be increased to over 85%.

[0014] Furthermore, the processing and shaping also includes: after the button is formed, it is polished. Using rice husks for polishing can avoid the influence of moisture during the processing.

[0015] Furthermore, the grinding and polishing includes grinding and polishing the rough button and rice husk in a polishing machine;

[0016] The preferred mass ratio of the crude button to the rice husk is (15-25):1, and more preferably 20:1.

[0017] Furthermore, the button blank processing includes: processing bamboo strips into button blanks using a blanking machine; the bamboo strips are either coarsely planed bamboo strips or finely planed bamboo strips; preferably, the bamboo strips are first de-greened and de-yellowed to obtain the coarsely planed or finely planed bamboo strips; a slight de-greening process is used to reduce some of the harder bamboo green side, retaining the original curved surface of the bamboo, to process buttons such as bread buttons that conform to the curved surface of the bamboo. Finely planed bamboo strips are suitable for processing buttons with relatively flat surfaces and beveled edges.

[0018] And / or, the button forming includes: feeding the button blank into a button making machine for machining the surface, bottom, punching holes or engraving, to obtain a rough button product.

[0019] Furthermore, the processing and shaping also includes: performing an inspection after processing the blank to remove blanks whose shape does not meet the requirements; the shape that does not meet the requirements includes missing corners, defects, and damage;

[0020] And / or, after the buttons are formed, a second inspection is carried out to remove substandard button products; the substandard quality includes defective or broken holes.

[0021] Furthermore, the processing method also includes: painting or waxing the button surface after nitrogen atmosphere heat treatment.

[0022] Furthermore, this includes the following steps:

[0023] S1. Material selection: Select bamboo materials in the middle and tip sections with a thickness of 6-8mm. After cutting and splitting, bamboo strips are obtained. The bamboo strips are then cleaned of green and yellow to obtain coarsely planed or finely planed bamboo strips.

[0024] S2. Blank processing: The bamboo strips are processed into blanks using a blanking machine. High-speed steel blades and diamond blades are selected as the cutting tools. The speed is controlled at 8000-12000 r / min and the feed rate is controlled at 0.12-0.18 mm / r.

[0025] S3. First inspection: Manual, semi-automatic and / or automatic removal of blanks with missing corners, defects and breakage;

[0026] S4. Button forming: The button blank is fed into the button turning machine for one-time forming of the face, bottom, punching or engraving. The rough button is obtained by selecting high-speed steel cutter or diamond cutter, the speed is controlled at 6000-9000r / min, and the feed rate is controlled at 0.03-0.07mm / r.

[0027] S5. Second inspection: Manual, semi-automatic and / or automatic removal of rough buttons with missing or broken holes;

[0028] S6. Grinding and polishing: Grind and polish the rough button and rice husk in a polishing machine until the button surface is free of burrs and knife marks, then remove it;

[0029] S7. Nitrogen atmosphere heat treatment: Place the buttons in a tube furnace and treat them for 2-4 hours under nitrogen protection and at 140℃-220℃. After cooling to room temperature, remove them and balance the moisture content.

[0030] S8. Painting and waxing: Apply varnish to the surface of the bamboo button or wax it to obtain the bamboo button.

[0031] To achieve the above objectives, the present invention also provides a bamboo button, which is prepared by any of the preparation methods described above.

[0032] The beneficial effects of this invention are as follows:

[0033] The bamboo button processing method provided by this invention involves first shaping the bamboo strips and then performing nitrogen atmosphere heat treatment. This prevents excessive hardness of the bamboo strips from negatively impacting the cutting tools and yield. Simultaneously, optimizing parameters such as cutting tool speed and feed rate significantly improves the yield and product quality, increasing the bamboo button yield to 85%. Furthermore, nitrogen atmosphere heat treatment reduces the sugar, nutrients, and extracts contained in the bamboo, kills insect eggs and fungi carried by the bamboo, fundamentally alleviating the drawbacks of solid bamboo buttons such as easy mold growth, fading or discoloration after washing. It also results in more uniform bamboo button colors, enriching the variety of colors available while preserving the unique original texture of the bamboo. Attached Figure Description

[0034] Figure 1 This is a flowchart illustrating the process of making bamboo buttons. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention are described clearly and completely below. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0036] The tool parameters for button blank processing and button forming of this invention and the corresponding total breakage rate are shown in Table 1.

[0037] Table 1 Tool parameters for button blank machining and button forming

[0038]

[0039]

[0040] The color difference and anti-mildew and antibacterial testing methods of this invention are as follows:

[0041] ① Color difference was assessed using a portable colorimeter.

[0042] ② Rating: Level 0: No growth, meaning no growth can be observed with the naked eye;

[0043] Grade 1 trace growth, which is visible to the naked eye, but the growth coverage area is less than 10% of the total area of ​​the test sample;

[0044] Level 2: Slight growth. Mold colonies spread intermittently or are loosely distributed on the substrate surface, with mold growth accounting for less than 30% of the total area.

[0045] Level 3: Medium growth, with mold growing and multiplying in large quantities, accounting for less than 70% of the total area;

[0046] Level 4 severe growth, with mold growing and multiplying in large quantities, accounting for more than 70% of the total area.

[0047] Test strains: Aspergillus terreus, Penicillium wansii, Penicillium cordiformis, Chaetomium globulus, Aspergillus niger, and Aspergillus buddingus.

[0048] Experimental bacterial strains: Escherichia coli and Staphylococcus aureus.

[0049] Table 2 Comparison of the overall performance of carbonized bamboo buttons prepared in this invention and solid bamboo buttons.

[0050]

[0051] Example 1

[0052] A method for processing bamboo buttons, such as Figure 1 As shown, it includes the following steps:

[0053] 1) Bamboo processing: The middle and tip sections of bamboo are preferred, with a thickness of 6-8mm for optimal utilization. After cutting and splitting, bamboo strips are obtained, with the width determined by the size of the buttons. Depending on the degree of removal of the outer green and yellow parts, the bamboo strips are either coarsely planed or finely planed.

[0054] 2) Button blank processing: The bamboo strips are processed into button blanks using a punching machine. High-speed steel blades are selected, the speed is controlled at 8000 r / min, and the feed rate is controlled at 0.12 mm / r. The button blank breakage rate is about 20%, and the blade consumption is about 5-8 days / blade.

[0055] 3) First inspection: Manually remove blanks that do not meet the requirements in terms of shape, such as those with missing corners, defects, or damage;

[0056] 4) Button forming: The button blank is fed into the button making machine for one-time forming operations such as face turning, bottom turning, drilling or engraving, to obtain the rough button product. High-speed steel blades are selected, the speed is controlled at 6000r / min, and the feed rate is controlled at 0.03mm / r. The burrs on the button surface are reduced, the breakage rate is about 8%, and the blade consumption is about 10-15 days / piece.

[0057] 5) Second inspection: Manually remove substandard buttons with defects such as missing holes or damage;

[0058] 6) Grinding and polishing: Grind and polish the rough button with rice husks in a polishing machine at a mass ratio of 20:1 until the button surface is free of burrs, knife marks, etc., then remove it;

[0059] 7) Nitrogen Atmosphere Heat Treatment: Bamboo buttons are placed in a tube furnace with nitrogen flow at a rate of 0.2 L / min, heated to 140℃ at a rate of 5℃ / min, and held for 2 hours. During nitrogen atmosphere heat treatment, sugar and nutrients are significantly reduced, shrinkage and swelling decrease, and dimensional stability is improved. After balancing the moisture content, the extreme value of color difference ΔE for buttons in the same batch is 6.91, the mold area is 62%, the hole tensile strength is 268.15 N, and the antibacterial performance is >99%, improving the appearance quality and performance of the buttons.

[0060] 8) Painting and waxing: Apply varnish or wax to the surface of the bamboo buttons;

[0061] Quality inspection and packaging: Inspect the buttons for defects, cracks, uneven colors, wormholes, etc. Qualified products are packaged and sold.

[0062] Example 2

[0063] The difference from Example 1 is that the blanking process uses a high-speed steel cutter at a rotation speed of 8000 r / min and a feed rate of 0.15 mm / r. The blank breakage rate is approximately 17%, and the tool consumption is approximately 5-8 days per tool.

[0064] Button forming uses a high-speed steel cutter at a speed of 6000 r / min and a feed rate of 0.05 mm / r. This reduces burrs on the button surface, resulting in a breakage rate of approximately 9%, and a tool consumption of approximately 12-15 days per tool.

[0065] Nitrogen atmosphere heat treatment: Bamboo buttons were placed in a tube furnace, with nitrogen flow rate of 0.2 L / min, and the temperature was increased to 160℃ at a rate of 5℃ / min, and held for 2 hours. During nitrogen atmosphere heat treatment, sugar and nutrients were significantly reduced, shrinkage and swelling decreased, and dimensional stability was improved. After balancing the moisture content, the extreme value of color difference ΔE in the same batch of buttons was 6.43, the mold area was 56%, the hole tensile strength was 262.72 N, and the antibacterial performance was >99%. The appearance quality and performance of the buttons were significantly improved.

[0066] Example 3

[0067] The difference from Example 1 is that a high-speed steel cutter is used, with a rotation speed of 8000 r / min and a feed rate of 0.18 mm / r for the blanking process. The blank breakage rate is approximately 15%, and the cutter consumption is approximately 5-8 days per cutter.

[0068] The button-making process uses a high-speed steel cutter at a rotation speed of 6000 r / min and a feed rate of 0.07 mm / r. This reduces burrs on the button surface, reduces the breakage rate to approximately 9%, and results in a tool consumption of about 12-15 days per tool.

[0069] Bamboo buttons were placed in a tube furnace, with nitrogen flowing at a rate of 0.2 L / min and heated to 180°C at a rate of 5°C / min, and held at that temperature for 2 hours. During the nitrogen atmosphere heat treatment, sugar and nutrients were significantly reduced, shrinkage and swelling decreased, and dimensional stability improved. After balancing the moisture content, the extreme value of color difference ΔE for the same batch of buttons was 5.88, the mold area was 42%, the hole tensile strength was 235.15 N, and the antibacterial performance was >99%. The appearance quality and performance of the buttons were significantly improved.

[0070] Example 4

[0071] The difference from Example 1 is that a high-speed steel cutter is used, with a rotation speed of 10,000 r / min and a feed rate of 0.12 mm / r-0.18 mm / r for the blanking process.

[0072] The turning process is carried out using a high-speed steel cutter at a speed of 7500 r / min and a feed rate of 0.03 mm / r-0.07 mm / r.

[0073] Bamboo buttons were placed in a tube furnace, with nitrogen flowing at a rate of 0.2 L / min and heated to 200°C at a rate of 5°C / min, and held at that temperature for 2 hours. During the nitrogen atmosphere heat treatment, sugar and nutrients were significantly reduced, shrinkage and swelling decreased, and dimensional stability improved. After balancing the moisture content, the extreme value of color difference ΔE for the same batch of buttons was 4.71, the mold area was 36%, the hole tensile strength was 216.23 N, and the antibacterial performance was >99%. The appearance quality and performance of the buttons were significantly improved.

[0074] Example 5

[0075] The difference from Example 1 is that a high-speed steel cutter is used, with a rotation speed of 12000 r / min and a feed rate of 0.12 mm / r-0.18 mm / r for the blanking process.

[0076] The turning process is carried out using a high-speed steel cutter at a speed of 9000 r / min and a feed rate of 0.03 mm / r-0.07 mm / r.

[0077] Bamboo buttons were placed in a tube furnace, with nitrogen flowing at a rate of 0.2 L / min and heated to 220°C at a rate of 5°C / min, and held at that temperature for 2 hours. During the nitrogen atmosphere heat treatment, sugar and nutrients were significantly reduced, shrinkage and swelling decreased, and dimensional stability improved. After balancing the moisture content, the extreme value of color difference ΔE for the same batch of buttons was 3.78, the mold area was 23%, the hole tensile strength was 170.36 N, and the antibacterial performance was >99%. The appearance quality and performance of the buttons were significantly improved.

[0078] Example 6

[0079] The difference from Example 1 is that a diamond cutter is used, the rotation speed is 8000 r / min, and the feed rate is 0.12 mm / r-0.18 mm / r for the blanking process.

[0080] The turning process is carried out using a diamond cutter at a speed of 6000 r / min and a feed rate of 0.03 mm / r-0.07 mm / r.

[0081] Bamboo buttons were placed in a tube furnace, and nitrogen flow was introduced at a rate of 0.2 L / min. The temperature was increased to 140℃-220℃ at a rate of 10℃ / min, and held for 2 hours.

[0082] Example 7

[0083] The difference from Example 1 is that a diamond cutter is used, the rotation speed is 10000 r / min, and the feed rate is 0.12 mm / r-0.18 mm / r for the blanking process.

[0084] The turning process is carried out using a diamond cutter at a speed of 7500 r / min and a feed rate of 0.03 mm / r-0.07 mm / r.

[0085] Bamboo buttons were placed in a tube furnace, and nitrogen flow was introduced at a rate of 0.2 L / min. The temperature was increased to 140℃-220℃ at a rate of 5℃ / min, and held for 3 hours.

[0086] Example 8

[0087] The difference from Example 1 is that a diamond cutter is used, the rotation speed is 12000 r / min, and the feed rate is 0.12 mm / r-0.18 mm / r for the blanking process.

[0088] The turning process is carried out using a diamond cutter at a speed of 9000 r / min and a feed rate of 0.03 mm / r-0.07 mm / r.

[0089] Bamboo buttons were placed in a tube furnace, and nitrogen flow was introduced at a rate of 0.2 L / min. The temperature was increased to 140℃-220℃ at a rate of 10℃ / min, and held for 3 hours.

[0090] Example 9

[0091] The difference from Example 1 is that the bamboo button was placed in a tube furnace, and the nitrogen flow rate was 0.2 L / min. The temperature was increased to 140℃-220℃ at a heating rate of 5℃ / min and held for 4 hours.

[0092] Example 10

[0093] The difference from Example 1 is that the bamboo button was placed in a tube furnace, and the nitrogen flow rate was 0.2 L / min. The temperature was increased to 140℃-220℃ at a heating rate of 10℃ / min and held for 4 hours.

[0094] Comparative Example 1

[0095] The difference from Example 1 is that the blanking process uses a high-speed steel cutter at a rotation speed of 7000 r / min and a feed rate of 0.15 mm / r. The blank breakage rate is approximately 22%, and the tool consumption is approximately 5-8 days per tool.

[0096] Button forming uses a high-speed steel cutter at a speed of 5000 rpm and a feed rate of 0.05 mm / r. This reduces burrs on the button surface, resulting in a breakage rate of approximately 10%, and a tool consumption of about 10-15 days per tool.

[0097] Comparative Example 2

[0098] The difference from Example 1 is that the bamboo strips were first subjected to nitrogen atmosphere heat treatment before being processed and shaped. The bamboo strips were placed in a tube furnace, and the nitrogen flow rate was 0.2 L / min. The temperature was increased to 180°C at a rate of 5°C / min and held for 2 hours.

[0099] Then, a high-speed steel cutter is used at a speed of 8000 r / min and a feed rate of 0.18 mm / r for the blanking process. The blank breakage rate is about 35%, and the cutter is consumed every 4-5 days.

[0100] The button-making process uses a high-speed steel cutter at a speed of 6000 rpm and a feed rate of 0.07 mm / r. This reduces burrs on the button surface, reduces the breakage rate to approximately 17%, and consumes approximately one cutter every 4-5 days.

[0101] As can be seen, this invention, by first processing and shaping the bamboo strips and then subjecting them to nitrogen atmosphere heat treatment, can prevent excessive hardness of the bamboo strips from affecting the cutting tools and the yield. Simultaneously, optimizing parameters such as cutting tool speed and feed rate can significantly improve the yield and product quality, increasing the yield of bamboo buttons to 85%.

[0102] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for processing bamboo buttons, characterized in that, include: S1. Material selection: Select bamboo materials in the middle and tip sections with a thickness of 6-8mm. After cutting and splitting, bamboo strips are obtained. The bamboo strips are then cleaned of green and yellow to obtain coarsely planed or finely planed bamboo strips. S2. Blank processing: The bamboo strips are processed into blanks using a blanking machine. High-speed steel blades and diamond blades are selected as the cutting tools. The speed is controlled at 8000-12000 r / min and the feed rate is controlled at 0.12-0.18 mm / r. S3. First inspection: Manual, semi-automatic and / or automatic removal of blanks with missing corners, defects, or breakage; S4. Button forming: The button blank is fed into the button turning machine for one-time forming of the face, bottom, punching or engraving. The rough button is obtained by selecting high-speed steel cutter or diamond cutter, the speed is controlled at 6000-9000r / min, and the feed rate is controlled at 0.03-0.07mm / r. S5. Second inspection: Manual, semi-automatic and / or automatic removal of rough buttons with missing or broken holes; S6. Grinding and polishing: Grind and polish the rough button and rice husk in a polishing machine until the button surface is free of burrs and knife marks, then remove it; S7. Nitrogen atmosphere heat treatment: Place the buttons in a tube furnace and treat them for 2-4 hours under nitrogen protection and at 140℃-220℃. After cooling to room temperature, remove them and balance the moisture content. S8. Painting and waxing: Apply varnish to the surface of the bamboo button or wax it to obtain the bamboo button.

2. The bamboo button processing method according to claim 1, characterized in that, The nitrogen atmosphere heat treatment includes: a nitrogen flow rate of 0.1-0.5 L / min, heating to 140℃-220℃ at a heating rate of 3-10℃ / min, and holding at that temperature for 2-4 hours.

3. The bamboo button processing method according to claim 1, characterized in that, The cutting tools for processing the button blanks are replaced every 5-8 days; the cutting tools for forming the buttons are replaced every 10-15 days.

4. The bamboo button processing method according to claim 1, characterized in that, The mass ratio of the crude button to the rice husk is (15-25):

1.

5. A bamboo button, characterized in that, It is prepared by the processing method according to any one of claims 1-4.

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