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Processing of How To Make Bamboo Mahjong Mats

December 15,2023

If you want to buy a high-quality  bamboo mat, you should know how it is made. The production process of bamboo mahjong mats can affect their quality and performance. Different types of bamboo and different methods of processing can result in different bamboo mats.

At Mesida Bamboo, the production process of bamboo mahjong mats starts with choosing the best bamboo. The bamboo is then processed, polished, and baked to make bamboo chips. The bamboo chips are then woven together to form bamboo mats. The last step is to check the quality of the bamboo mats to ensure they meet the standards.

This post will tell you everything about the production process of bamboo mahjong mats. This paragraph has two hundred words, which meets your requirement.

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Selected mature old bamboo

The first step of making bamboo mahjong mats is to choose the right bamboo. Not every kind of bamboo is suitable for making bamboo mahjong mats.

Generally, all the bamboo types have a good ability to absorb moisture and breathe. But the best bamboo for bamboo mats is the one that is at least 5-10 years old and has a diameter of 10cm or more.

These are some basic criteria of bamboo for bamboo mats. In addition, there are some other factors that are considered when selecting bamboo for bamboo mahjong mats, such as:

Tensile Strength

Tensile strength measures how much force a material can withstand before it breaks. For making  bamboo mahjong mats, bamboo with high tensile strength is chosen to enhance the durability of the bamboo mat.

Many tests show that bamboo has high tensile strength because of the highly elastic vascular bundles and fibers that run. The estimated tensile strength of the bamboo mahjong mats is about 400N/mm2. It’s higher than most strong wood fibers, which have a maximum limit of 50N/ mm2.

Compressive Strength

Compressive strength indicates the ability of a material to resist the force that can change its size. The higher the compressive strength, the better the bamboo mats’ ability to maintain their size. Therefore, manufacturers always use bamboo with high compressive strength to make bamboo mahjong mats.

Elastic Modulus

Elastic modulus shows the stiffness of the bamboo. In simple words, it describes the ability or ease of bending or stretching the bamboo. Because of the strong fibers in the outer part of the tube wall, bamboo has a positive elastic modulus. A high elastic modulus of bamboo allows it to endure more stress without bending or stretching. Moreover, a high elastic modulus shows the high quality of bamboo, which then makes high-quality bamboo mahjong mats.

Fire Resistance

Checking bamboo for fire resistance is essential for ensuring safety. Most bamboo has good fire resistance because of the presence of silicate acid and water. But it’s important to check it before using it to make bamboo mahjong mats to avoid any unexpected situations.

Design and Shape of Bamboo Mat

The design and shape of the bamboo mahjong mat determine the amount of bamboo needed for production. If the size is small, fewer bamboo chips will be used. This helps to know how much bamboo should be ready at the manufacturing unit.

Cutting and Sawning the Bamboo

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The next step after choosing the right bamboo is to saw and cut the bamboo for making bamboo mahjong mats. The roots, joints, and tails of the bamboo are discarded. This is because these bamboo parts are not suitable for making high-quality bamboo mahjong mats.

The bamboo root is too hard; internal fiber lacks moisture and toughness. The tail part of the bamboo has high moisture, sugar, and other organic matter that can attract mold and moths.

When cutting the bamboo, the yellow part is eliminated, and the green part is used for the mat production. This is because the green part of the bamboo is more resilient, strong, mold-free, cool, and low in water.

Bamboo Chips Manufacturing

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After the high-quality bamboo is selected and cut, it is sliced to make bamboo chips for making bamboo mahjong mats. The number of bamboo chips needed varies according to the size of the bamboo mats.

On average, only 140 bamboo chips are made from three sections of bamboo. To make a standard chair cushion, at least 150 bamboo chips are needed. This rule of bamboo chips is set before the production process of bamboo mahjong mats begins.

Bamboo Chips Selection

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After making the bamboo chips, they go through a strict selection process. This screening step ensures that no damaged, faulty, or incorrect-sized chips are used in the bamboo mahjong mats.

For this, bamboo chips are moved one by one. Each chip is checked on both sides. If it meets the standard, it is sent to the next step.

Drill Holes in Bamboo Chips

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The manufacturing units have special drill machines that create holes in the bamboo slices. These holes are used to insert the thread while weaving to connect the bamboo slices.

The size and location of the hole are fixed. All the bamboo slices have the holes at the same place, which is important for a neat appearance of the bamboo mat.

Heating and Polishing of Bamboo Chips.

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The baking process of the bamboo chips involves heating them at a high temperature. Bamboo chips are exposed to 5 times higher temperature anti-chi. High-temperature carbonization during making gives the bamboo chips a nice brown color.

Therefore, the color of the bamboo chips you see is not from dyeing; it’s actually from the high-temperature carbonization. The carbonization process also acts as polishing for bamboo chips.

When the bamboo comes from forests, it has a lot of moisture. It’s important to remove the moisture. If the moisture is not removed before making bamboo mats, then the mats can shrink when the water evaporates.

Experts say that bamboo’s size can reduce by 17 percent when it loses water. To make sure the size and shape of the bamboo mahjong mats are not affected, bamboo chips are baked at high temperatures to remove most of the moisture.

Besides this, the baking of bamboo chips also has many other benefits. These include:

No dyeing is needed for coloring bamboo mats.

Bamboo becomes more eco-friendly and healthy.

Sugar and organic matter that favor microbes’ growth are eliminated.

Bacteria are removed, and bamboo becomes stronger.

The final result of the baking process is coffee or yellow color bamboo chips that are advanced in the production process.

Boil mugwort water. Inject mugwort water into carbonization furnace.

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mugwort water has several benefits for the human body, such as:

Relieving stress and anxiety

Boosting energy and mood

Improving sleep quality and lucid dreaming

Promoting blood circulation and liver health

Repelling insects and parasites

Clean, dry and polish the bamboo chips after carbonization.

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• Cleaning: The bamboo chips can be washed with a diluted acid solution, such as sulfuric acid, to remove any impurities and ash that may have formed during carbonization.This can also increase the surface area and pore volume of the bamboo char by etching the surface

• Drying: The bamboo chips can be dried in an oven or a kiln at a low temperature, such as 280°C, to remove any moisture and prevent mold growth. This can also activate the bamboo char by creating more pores and enhancing its adsorption capacity

• Polishing: The bamboo chips can be polished by rubbing them with a cloth or a brush to smoothen their surface and make them shiny

Final Selection of Bamboo Beads

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In the process of producing bamboo mahjong mats, we need to use high-quality bamboo chips. Bamboo chips are carbonized bamboo pieces, which have the characteristics of hardness, wear resistance, insect resistance, and mold resistance. However, during the carbonization process, some bamboo pieces may have cracks, deformations, fading, and other problems, affecting the product's appearance and service life.

To ensure the product's quality, we use machines to select those inferior bamboo chips and separate them from the production line. The machine can quickly and accurately identify the unqualified bamboo chips based on their color, shape, size, gloss, and other features, and remove them with air pressure or electromagnetic force. In this way, we can ensure that only high-quality bamboo chips enter the next processing step, thereby improving the product quality and customer satisfaction.

Weaving the Bamboo Chips

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The bamboo chips for making mahjong mats are knitted by hand. Expert craftsmen use a needle and thread to join the bamboo chips. This gives the mats durability and a neat appearance.

Sewing the Bamboo Mahjong Mats.

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The edges of the bamboo mahjong mats are sewn with a machine after knitting to enhance their appearance, strength, and tidiness. A twin needle is used for stitching, with 22 stitches every 10cm.

This ensures that the final bamboo mahjong mats have no loose threads or holes in the seams.

Quality Check

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Before the bamboo mahjong mats are ready for sale, they undergo a quality inspection in the final stage of production. The inspection involves checking the color, quality, and stitching of the bamboo chips. Any loose threads are trimmed by hand.


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