The production of flooring has been in China for a hundred years; and there are more than 4,000 real-floor production enterprises in China, and the design output of laminate flooring has reached nearly 100 million square meters. More than 20 production lines have been introduced in composite flooring, and the production capacity has been more than 1,000. Ten thousand square meters. In addition, bamboo flooring and other products make China's flooring market rich and diverse, and it meets the requirements of different users in various industries.
Composite floor production process
Composite wood flooring generally has three typical production processes, namely, a three-layer slab structure common heating production process, a five-layer slab structure high-frequency heating production process, and a six-layer slab structure high-frequency heating production process.
Rantewood's newly launched six-layer slab composite laminate production process draws on the advantages of the three-layer slab structure production process and the five-layer slab structure production process, overcoming the three-layer slab and slab structure production process. Shortcomings. The specific performance is:
1 It avoids the side coating process of the three-layer slab structure production process board, thus overcoming the production of glue line after the hot pressing of the composite floor product; adopting the high-frequency hot pressing technology; reducing the thermal stress and gluing due to ordinary hot pressing Stress, thus reducing the deformation of the product;
2 Adopting the lateral clamping technology inside the press to make the table board splicing tightly;
3. The middle section of the five-layer slab structure production process board is avoided to produce the surface plate clamp and the core sap material defect; the frame saw is convenient to use; and the sawing loss is reduced. Compared with ordinary multi-saw blades. The frame saw is used to increase the yield of the board material by about 25%; thereby reducing the production cost.
In addition, if the main production process of the three-layer slab structure is adopted, it is difficult to position the plate due to its thin thickness, and it is also impossible to adopt the lateral lateral pressing technology, and the deviation is easy to occur when trimming. At the same time, a frame saw is used to increase the yield of the watch. The production process of six-layer slab structure is an inevitable trend in the development of composite flooring production process.
The splicing of the table is the key to paving, and at the same time, the color between the plates is uniform, the material is similar, and the texture is relatively consistent. In terms of table splicing, mechanical compaction is stricter and flatter than manual splicing. The surface pavement in the production process of the six-layer slab structure is the advanced production process of today's advanced quality, regardless of its quality or output.
The production process of the six-slab slab structure is to load the watch panels into the watch panel, and then suck them out layer by layer with a vacuum suction cup. The glued core board falls on the pre-placed board, and is transported to the paving station together with the bottom board, and then the glued core board is once again placed on the pre-formed board, together with the bottom board. Ship to the paving station together, put two layers of the board, and then fasten the bottom core board (two layers) placed on the side of the paving table, so that the slabs of six layers are laid.
The five-layer and six-layer slab structure production process is adopted; the paved slab is sent to the high-frequency press, and the position is automatically adjusted by the machine according to the position of the double-layered table. At the same time as the pressure plate is closed; the side plate is first tightened by the auxiliary lateral side tightening device to make the table plate splicing tightly. Then, the pressure of the press is generally 1.0 to 1.2 Npa. After the pressure is reached, the power is applied to apply a high frequency to cure the adhesive. For high-frequency heating, it is selective heating (the principle is similar to that of a domestic microwave oven), that is, the direct heating of the adhesive layer is generally 37 Mhz. The curing speed of the glue is very fast. The heat curing time is generally only 30 to 35 seconds, and the entire hot pressing cycle is about 60 to 70 seconds.
Analysis from the principle of heat conduction. The hot water medium can not meet the requirements of the modern composite floor production process; from the analysis of the glue formation mechanism, the high-frequency heating glue layer is uniform and the thermal stress is minimal. The whole plate after hot pressing is subjected to aging treatment for about 2 days. The six-layer slab structure production process does not need to be split like a five-layer slab structure, and the positioning is easier than using a three-layer slab structure. It is more convenient to process.
The core equipment for the production of composite wood flooring is a hot press. The main improvement of the five-layer and six-layer slab structure high-frequency heating production process relative to the three-layer slab structure common heating production process on the production equipment is:
1 Reduces the bonding process and production equipment on the side of the watchboard, and also avoids the glue line between the rubber sheets.
2 Increase the tensioning device around the press to overcome the tight splicing between the boards:
3 The high-frequency press is used to shorten the pressurization time and improve the production efficiency.
Technical transformation of composite wood floor production line
At present, in the composite flooring market, the generally three-squeezed floor is highly competitive. The market price is not high, which seriously affects the profits of production enterprises. Products with wide strips, double or single sheets are selling well in the current market. Its price is also significantly higher than the three-ply floor.
Wide strips have high processing requirements and are difficult to manufacture; how to process wide strips becomes a technical difficulty in the composite wood flooring industry. Laut's newly developed patented product, the frame saw, which is specially produced by dry composite floorboard, effectively solves the difficulty of surface plate processing. Its first generation products have been used in the composite wood flooring industry for many years. In recent years, the second generation of frame saws has been developed to meet the needs of the growing composite wood flooring market.
After more than 20 years of practical experience accumulation and technical exploration, Lauter's newly developed six-layer slab structure high-frequency heating production process avoids the lateral coating process of the three-layer slab structure production process, thus overcoming the hot pressing After the composite floor product produces a glue line. The use of high-frequency hot pressing technology reduces the thermal stress and bonding stress caused by ordinary hot pressing, thus reducing the deformation of the product. The lateral squeezing technology is adopted in the press to make the splicing between the slabs tightly, which avoids the defects caused by the middle slab production of the five-slab slab structure. It is convenient to use the frame saw to reduce the loss of the sawing road. Compared with the ordinary multi-blade saw, the board material yield rate is increased by nearly 25%, thereby reducing the production cost.
The high frequency press has the following advantages:
1 High-frequency heating is selective heating to directly heat the adhesive layer and the heating speed is fast, the glue is completely cured and does not occur in curing, especially the original structure product;
2 The high-frequency press has strong adaptability to the rubber type, the hot pressing cycle is short, and the glue aging time is short;
3 High-frequency press heating is the direct heating of the rubber layer, which will not heat and dry the wood raw materials and affect the water content balance of each layer;
4 High-frequency presses have a strong flexibility. The product structure can be flexibly adjusted and is simple and easy:
5 The high-frequency press has small volume, small floor space, no heat radiation and smoke volatilization under cold and cold; the machine itself is shielded and the operating environment is comfortable;
6 The high-frequency press has a continuous cycle, the hot pressing time is very short, and the slab does not require waiting time, and the efficiency is high;
7 The high-frequency press loading and unloading plate is fast and simple, and there is no slab misalignment;
8 High-frequency press heating heat transfer synchronization and uniformity of the whole slab material, complete gluing, small temperature gradient, small bonding stress (small thermal stress);
9 The high-frequency press does not produce high temperature and burns the surface of the wood to cause discoloration of the wood surface;
10. The platen of the high-frequency press is very clean and does not cause sticking and does not affect the surface quality of the product;
11 Only the high-frequency press has a side-to-side slab tightening device installed to ensure that the splicing between the slabs is tight, and the surface of the front panel does not need to be glued.
Development prospects of composite wood flooring
Composite wood flooring is the deep processing and comprehensive utilization of Kimura. One of the most value-added products. Compared with other ground materials, it overcomes the shortcomings such as cold, hard, slippery, heavy and chemical building materials such as plastic floor and carpet, such as odor, toxicity and aging. It has obvious advantages such as performance, weight and price. At the same time, wood is a natural and ecological product of green.
The structure of composite wood flooring is reasonable, the cost is relatively low, the economic benefits are remarkable, and the practicality and decorativeity are integrated. It is an inevitable trend of wood floor decoration. As China continues to expand its domestic demand policy, the development of the residential industry in the early tenth “Five-Year Plan†will enter a critical period. China's residential construction and decoration industry will become a key industry in the future. With the continuous improvement of people's living standards and cultural tastes. The texture of the material laid on the ground. The requirements for color, pattern and decoration are also constantly increasing. In the interior decoration market where interior decoration is booming, composite wood flooring has huge market space.
Composite floor production process
Composite wood flooring generally has three typical production processes, namely, a three-layer slab structure common heating production process, a five-layer slab structure high-frequency heating production process, and a six-layer slab structure high-frequency heating production process.
Rantewood's newly launched six-layer slab composite laminate production process draws on the advantages of the three-layer slab structure production process and the five-layer slab structure production process, overcoming the three-layer slab and slab structure production process. Shortcomings. The specific performance is:
1 It avoids the side coating process of the three-layer slab structure production process board, thus overcoming the production of glue line after the hot pressing of the composite floor product; adopting the high-frequency hot pressing technology; reducing the thermal stress and gluing due to ordinary hot pressing Stress, thus reducing the deformation of the product;
2 Adopting the lateral clamping technology inside the press to make the table board splicing tightly;
3. The middle section of the five-layer slab structure production process board is avoided to produce the surface plate clamp and the core sap material defect; the frame saw is convenient to use; and the sawing loss is reduced. Compared with ordinary multi-saw blades. The frame saw is used to increase the yield of the board material by about 25%; thereby reducing the production cost.
In addition, if the main production process of the three-layer slab structure is adopted, it is difficult to position the plate due to its thin thickness, and it is also impossible to adopt the lateral lateral pressing technology, and the deviation is easy to occur when trimming. At the same time, a frame saw is used to increase the yield of the watch. The production process of six-layer slab structure is an inevitable trend in the development of composite flooring production process.
The splicing of the table is the key to paving, and at the same time, the color between the plates is uniform, the material is similar, and the texture is relatively consistent. In terms of table splicing, mechanical compaction is stricter and flatter than manual splicing. The surface pavement in the production process of the six-layer slab structure is the advanced production process of today's advanced quality, regardless of its quality or output.
The production process of the six-slab slab structure is to load the watch panels into the watch panel, and then suck them out layer by layer with a vacuum suction cup. The glued core board falls on the pre-placed board, and is transported to the paving station together with the bottom board, and then the glued core board is once again placed on the pre-formed board, together with the bottom board. Ship to the paving station together, put two layers of the board, and then fasten the bottom core board (two layers) placed on the side of the paving table, so that the slabs of six layers are laid.
The five-layer and six-layer slab structure production process is adopted; the paved slab is sent to the high-frequency press, and the position is automatically adjusted by the machine according to the position of the double-layered table. At the same time as the pressure plate is closed; the side plate is first tightened by the auxiliary lateral side tightening device to make the table plate splicing tightly. Then, the pressure of the press is generally 1.0 to 1.2 Npa. After the pressure is reached, the power is applied to apply a high frequency to cure the adhesive. For high-frequency heating, it is selective heating (the principle is similar to that of a domestic microwave oven), that is, the direct heating of the adhesive layer is generally 37 Mhz. The curing speed of the glue is very fast. The heat curing time is generally only 30 to 35 seconds, and the entire hot pressing cycle is about 60 to 70 seconds.
Analysis from the principle of heat conduction. The hot water medium can not meet the requirements of the modern composite floor production process; from the analysis of the glue formation mechanism, the high-frequency heating glue layer is uniform and the thermal stress is minimal. The whole plate after hot pressing is subjected to aging treatment for about 2 days. The six-layer slab structure production process does not need to be split like a five-layer slab structure, and the positioning is easier than using a three-layer slab structure. It is more convenient to process.
The core equipment for the production of composite wood flooring is a hot press. The main improvement of the five-layer and six-layer slab structure high-frequency heating production process relative to the three-layer slab structure common heating production process on the production equipment is:
1 Reduces the bonding process and production equipment on the side of the watchboard, and also avoids the glue line between the rubber sheets.
2 Increase the tensioning device around the press to overcome the tight splicing between the boards:
3 The high-frequency press is used to shorten the pressurization time and improve the production efficiency.
Technical transformation of composite wood floor production line
At present, in the composite flooring market, the generally three-squeezed floor is highly competitive. The market price is not high, which seriously affects the profits of production enterprises. Products with wide strips, double or single sheets are selling well in the current market. Its price is also significantly higher than the three-ply floor.
Wide strips have high processing requirements and are difficult to manufacture; how to process wide strips becomes a technical difficulty in the composite wood flooring industry. Laut's newly developed patented product, the frame saw, which is specially produced by dry composite floorboard, effectively solves the difficulty of surface plate processing. Its first generation products have been used in the composite wood flooring industry for many years. In recent years, the second generation of frame saws has been developed to meet the needs of the growing composite wood flooring market.
After more than 20 years of practical experience accumulation and technical exploration, Lauter's newly developed six-layer slab structure high-frequency heating production process avoids the lateral coating process of the three-layer slab structure production process, thus overcoming the hot pressing After the composite floor product produces a glue line. The use of high-frequency hot pressing technology reduces the thermal stress and bonding stress caused by ordinary hot pressing, thus reducing the deformation of the product. The lateral squeezing technology is adopted in the press to make the splicing between the slabs tightly, which avoids the defects caused by the middle slab production of the five-slab slab structure. It is convenient to use the frame saw to reduce the loss of the sawing road. Compared with the ordinary multi-blade saw, the board material yield rate is increased by nearly 25%, thereby reducing the production cost.
The high frequency press has the following advantages:
1 High-frequency heating is selective heating to directly heat the adhesive layer and the heating speed is fast, the glue is completely cured and does not occur in curing, especially the original structure product;
2 The high-frequency press has strong adaptability to the rubber type, the hot pressing cycle is short, and the glue aging time is short;
3 High-frequency press heating is the direct heating of the rubber layer, which will not heat and dry the wood raw materials and affect the water content balance of each layer;
4 High-frequency presses have a strong flexibility. The product structure can be flexibly adjusted and is simple and easy:
5 The high-frequency press has small volume, small floor space, no heat radiation and smoke volatilization under cold and cold; the machine itself is shielded and the operating environment is comfortable;
6 The high-frequency press has a continuous cycle, the hot pressing time is very short, and the slab does not require waiting time, and the efficiency is high;
7 The high-frequency press loading and unloading plate is fast and simple, and there is no slab misalignment;
8 High-frequency press heating heat transfer synchronization and uniformity of the whole slab material, complete gluing, small temperature gradient, small bonding stress (small thermal stress);
9 The high-frequency press does not produce high temperature and burns the surface of the wood to cause discoloration of the wood surface;
10. The platen of the high-frequency press is very clean and does not cause sticking and does not affect the surface quality of the product;
11 Only the high-frequency press has a side-to-side slab tightening device installed to ensure that the splicing between the slabs is tight, and the surface of the front panel does not need to be glued.
Development prospects of composite wood flooring
Composite wood flooring is the deep processing and comprehensive utilization of Kimura. One of the most value-added products. Compared with other ground materials, it overcomes the shortcomings such as cold, hard, slippery, heavy and chemical building materials such as plastic floor and carpet, such as odor, toxicity and aging. It has obvious advantages such as performance, weight and price. At the same time, wood is a natural and ecological product of green.
The structure of composite wood flooring is reasonable, the cost is relatively low, the economic benefits are remarkable, and the practicality and decorativeity are integrated. It is an inevitable trend of wood floor decoration. As China continues to expand its domestic demand policy, the development of the residential industry in the early tenth “Five-Year Plan†will enter a critical period. China's residential construction and decoration industry will become a key industry in the future. With the continuous improvement of people's living standards and cultural tastes. The texture of the material laid on the ground. The requirements for color, pattern and decoration are also constantly increasing. In the interior decoration market where interior decoration is booming, composite wood flooring has huge market space.
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