CN112157774A - Processing method of moso bamboo rotary slice - Google Patents
Processing method of moso bamboo rotary slice Download PDFInfo
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- CN112157774A CN112157774A CN202010958338.3A CN202010958338A CN112157774A CN 112157774 A CN112157774 A CN 112157774A CN 202010958338 A CN202010958338 A CN 202010958338A CN 112157774 A CN112157774 A CN 112157774A
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- 244000302661 Phyllostachys pubescens Species 0.000 title claims abstract description 124
- 235000003570 Phyllostachys pubescens Nutrition 0.000 title claims abstract description 124
- 238000003672 processing method Methods 0.000 title claims abstract description 13
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 136
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 136
- 241001330002 Bambuseae Species 0.000 claims abstract description 136
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 136
- 239000011425 bamboo Substances 0.000 claims abstract description 136
- 238000005520 cutting process Methods 0.000 claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 claims abstract description 32
- 238000012545 processing Methods 0.000 claims abstract description 14
- 238000001035 drying Methods 0.000 claims description 54
- 239000004744 fabric Substances 0.000 claims description 20
- 239000000835 fiber Substances 0.000 abstract description 13
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 230000018044 dehydration Effects 0.000 description 8
- 238000006297 dehydration reaction Methods 0.000 description 8
- 238000010411 cooking Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 241001391944 Commicarpus scandens Species 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 241000544043 Blyxa aubertii Species 0.000 description 1
- 241000745988 Phyllostachys Species 0.000 description 1
- 241000209504 Poaceae Species 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
- B27M1/08—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by multi-step processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27J—MECHANICAL WORKING OF CANE, CORK, OR SIMILAR MATERIALS
- B27J1/00—Mechanical working of cane or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/0085—Thermal treatments, i.e. involving chemical modification of wood at temperatures well over 100°C
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/06—Softening or hardening of wood
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
- B27L5/00—Manufacture of veneer ; Preparatory processing therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
- B27L5/00—Manufacture of veneer ; Preparatory processing therefor
- B27L5/08—Severing sheets or segments from veneer strips; Shearing devices therefor; Making veneer blanks, e.g. trimming to size
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Forests & Forestry (AREA)
- Wood Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention relates to the technical field of bamboo product processing, in particular to a processing method of a moso bamboo rotary slice, which comprises the following steps: the method comprises the following steps: putting the moso bamboo segments into water at the temperature of 70-85 ℃ for stewing for 7-8 h to enable the water content of the moso bamboo segments to reach more than 60%; step two: and fixing the cooked moso bamboo segments on a rotary cutter for rotary cutting to obtain moso bamboo rotary slices. The invention has the beneficial effects that: the mao bamboo sections are cooked and heated by using hot water with medium and high temperature, so that the physical and chemical properties of the bamboo sections of the mao bamboo can tend to be consistent, the rotary cut mao bamboo sections can be kept continuous without fracture, the waste rate in the rotary cut process of the mao bamboo is reduced, and the utilization rate of the mao bamboo is improved. The fiber bundles in the boiled moso bamboo sections can be softened, so that the moso bamboo sections can be more easily cut in a rotary cutting process, and the loss of a cutter of a rotary cutter is reduced; the water content of the bamboo sections of the bamboo can be improved to more than 60 percent after the bamboo sections are cooked, and the surfaces of the bamboo sections of the bamboo obtained after rotary cutting are very smooth.
Description
Technical Field
The invention relates to the technical field of bamboo product processing, in particular to a processing method of a moso bamboo rotary slice.
Background
Mao bamboo is a uniaxial scattered type evergreen arbor-shaped bamboo plant of gramineae and phyllostachys, the height of a pole can reach more than 20 meters, the thickness of the pole can reach more than 20 centimeters, an old pole has no fur, the green color is gradually changed into green-yellow color, and the wall thickness is about 1 centimeter. The moso bamboo has the advantages of fast growth, early lumber formation, high yield and wide application. After five to ten years of afforestation, the trees can be felled and utilized every year. The time from the bamboo shoot emergence to the bamboo formation of a moso bamboo plant is about two months, and the moso bamboo plant can be cut into paper making raw materials in the same year. If the bamboo is used as the bamboo raw material, the bamboo can be felled and utilized only by three to six years of reinforced growth.
The cutter loss of the rotary cutter is large in the rotary cutting process of the moso bamboo due to the fact that the toughness of the moso bamboo is large; and the density of the fiber bundles at each position in the moso bamboo is different, and the rotary cutter carries out rotary cutting on each bamboo section of the same moso bamboo according to the same cutting parameters, so that the rotary cutting lengths of different bamboo sections cannot be unified; in addition, because the moso bamboo is dispersed after being rotary cut into rotary cut pieces, the fiber bundles are easy to break, the length of the rotary cut moso bamboo pieces is difficult to control, the utilization rate of the moso bamboo is low, and the surface roughness of the rotary cut moso bamboo pieces obtained by rotary cutting is high.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provides a processing method of rotary bamboo slices, which can improve the continuity and surface smoothness of the rotary bamboo slices and reduce the loss of a cutter of a rotary cutter.
In order to solve the technical problems, the technical scheme of the invention is as follows: a processing method of a moso bamboo rotary slice comprises the following steps:
the method comprises the following steps: putting the moso bamboo segments into water at the temperature of 70-85 ℃ for stewing for 7-8 h to enable the water content of the moso bamboo segments to reach more than 60%;
step two: and fixing the cooked moso bamboo segments on a rotary cutter for rotary cutting to obtain moso bamboo rotary slices.
Specifically, the method further comprises the following steps: the rotary-cut moso bamboo slices are clamped between two layers of melt-blown cloth and then are dried for the first time through a drying device.
Specifically, the time for the first drying in the third step is 4-5 min, and the temperature for the first drying is 60-80 ℃.
Specifically, the method further comprises the following fourth step: and cutting off and dividing the rotary bamboo slices dried for the first time into sheets, and then drying for the second time.
Specifically, the time of the second drying in the fourth step is 5-8 min, and the temperature of the second drying is 50-60 ℃.
Specifically, the rotating speed of the main shaft of the rotary cutting machine in the second step is 85 r/min.
Specifically, the cutter feed amount of the rotary cutting machine in the second step is 0.2 mm.
The invention has the beneficial effects that: the mao bamboo sections are cooked and heated by using hot water with medium and high temperature, so that the physical and chemical properties of the bamboo sections of the mao bamboo can tend to be consistent, the rotary cut mao bamboo sections can be kept continuous without fracture, the waste rate in the rotary cut process of the mao bamboo is reduced, and the utilization rate of the mao bamboo is improved. The fiber bundles in the boiled moso bamboo sections can be softened, so that the moso bamboo sections can be more easily cut in a rotary cutting process, and the loss of a cutter of a rotary cutter is reduced; the water content of the bamboo sections of the bamboo can be improved to more than 60 percent after the bamboo sections are cooked, and the surfaces of the bamboo sections of the bamboo obtained after rotary cutting are very smooth.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description will be given with reference to the embodiments.
The processing method of the moso bamboo rotary slice comprises the following steps:
the method comprises the following steps: putting the moso bamboo segments into water at the temperature of 70-85 ℃ for stewing for 7-8 h to enable the water content of the moso bamboo segments to reach more than 60%;
step two: and fixing the cooked moso bamboo segments on a rotary cutter for rotary cutting to obtain moso bamboo rotary slices.
The principle of the invention is as follows: for the moso bamboo, when the moisture content is low, the bamboo tissue is more brittle, and the surface is easy to peel off, which is the reason that the existing moso bamboo is easy to break in the rotary cutting process. Before the moso bamboo sections are processed, the moso bamboos growing for 3-5 years are selected to be sawn to obtain the moso bamboo sections, and the moso bamboo sections are divided into green bamboo sections, middle bamboo sections and yellow bamboo sections according to different parts of the moso bamboos corresponding to the moso bamboos, wherein the green bamboo sections are bamboo sections of the moso bamboos close to the roots, and the whole moso bamboos are cyan; the tabasheer bamboo section is a bamboo section of the moso bamboo close to the end part and is yellow as a whole; the bamboo middle bamboo section is positioned between the green bamboo section and the tabasheer bamboo section, the cellulose content in the moso bamboo sections at different positions is greatly different, the fiber bundle content in the same moso bamboo is gradually decreased from the green bamboo to the tabasheer, for 4-year moso bamboos, the average fiber bundle density of the green bamboo section is 35 per 10 square millimeters, the average fiber bundle density of the bamboo middle bamboo section is 20 per 10 square millimeters, and the average fiber bundle density of the tabasheer bamboo section is 15 per 10 square millimeters.
After the different moso bamboo sections are heated for a certain time at different water temperatures, the fiber bundles in the moso bamboo sections can be softened, and meanwhile, the moso bamboo sections can be boiled and soaked for a long time to ensure that the water content of the moso bamboo sections reaches more than 60%. In addition, the moso bamboo segments need to be guaranteed to be completely immersed in water in the cooking process of the moso bamboo, the moso bamboo segments can be sleeved on the fixing rods by arranging the fixing rods in the cooking container, and the moso bamboo segments need to be turned over every 1-2 hours in the cooking process of the moso bamboo segments, so that all parts of the moso bamboo segments can be uniformly heated.
After the moso bamboo is cooked, redundant moisture on the surface of a moso bamboo section can be wiped by using hot cloth or blown dry by using warm air, so that the temperature of the moso bamboo section is kept above 65 ℃, then two ends of the moso bamboo section are clamped on a rotary cutter, the moso bamboo section is driven to rotate at a certain speed by a motor of the rotary cutter, the feed amount of a cutter is controlled to carry out rotary cutting on the moso bamboo, cut moso bamboo rotary slices need to naturally fall in the rotary cutting process, the moso bamboo rotary slices are prevented from being broken, and the moso bamboo rotary slices obtained by the processing steps can be continuous and are not broken for 25 meters at most.
As can be seen from the above description, the beneficial effects of the present invention are: the mao bamboo sections are cooked and heated by using hot water with medium and high temperature, so that the physical and chemical properties of the bamboo sections of the mao bamboo can tend to be consistent, the rotary cut mao bamboo slices can be kept continuous without fracture, the waste rate in the rotary cut process of the mao bamboo is reduced, and the utilization rate of the mao bamboo is improved; the fiber bundles in the boiled moso bamboo sections can be softened, so that the moso bamboo sections can be more easily cut in a rotary cutting process, and the loss of a cutter of a rotary cutter is reduced; the water content of the bamboo sections of the bamboo can be improved to more than 60 percent after the bamboo sections are cooked, and the surfaces of the bamboo sections of the bamboo obtained after rotary cutting are very smooth.
Further, the method also comprises the third step of: the rotary-cut moso bamboo slices are clamped between two layers of melt-blown cloth and then are dried for the first time through a drying device.
According to the description, the upper and lower layers of melt-blown cloth are used for clamping the rotary moso bamboo slices and drying the moso bamboo, so that the water loss speed of the moso bamboo in the dehydration process can be reduced, and the moso bamboo rotary slices are prevented from being rapidly dehydrated and warped in the drying process; meanwhile, the melt-blown fabric covers the surface of the rotary-cut moso bamboo pieces, so that water must be absorbed by the melt-blown fabric before the moso bamboo is dehydrated, the water absorption efficiency of the melt-blown fabric is reduced due to the fact that the water content of a certain area of the melt-blown fabric is too high, the dehydration speed of each part of the rotary-cut moso bamboo pieces can be consistent, and the water after drying of each part of the rotary-cut moso bamboo pieces can be consistent.
Further, the time of the first drying in the third step is 4-5 min, and the temperature of the first drying is 60-80 ℃.
From the above description, the moisture content of the bamboo rotary slice after the first drying can be reduced to 20%.
Further, the method also comprises the fourth step of: and cutting off and dividing the rotary bamboo slices dried for the first time into sheets, and then drying for the second time.
According to the above description, the rotary-cut moso bamboo slices after primary drying are divided into the sheets, so that the area of a single moso bamboo phase slice can be reduced, local cracking caused by too large shrinkage rate of fiber bundles in the rotary-cut moso bamboo slices after secondary drying is avoided, and the dehydration efficiency can be improved.
Further, the time of the second drying in the fourth step is 5-8 min, and the temperature of the second drying is 50-60 ℃.
As can be seen from the above description, the time for the second drying is longer than the time for the first drying, and the temperature is lower than the temperature for the first drying, so that the sheet can have sufficient time for dehydration in the drying process, and especially the central part of the sheet can ensure that the moisture content is reduced to below 5% after the second drying.
Further, the rotating speed of the main shaft of the rotary cutting machine in the second step is 85 r/min.
Further, the cutter feed amount of the rotary cutting machine in the second step is 0.2 mm/r.
From the above description, the thickness of the rotary cut bamboo sheet obtained by rotary cutting through the processing method can be controlled within 0.2mm, and such thickness can maximize the utilization rate of the bamboo section of the moso bamboo and simultaneously ensure that the rotary cut bamboo sheet of the moso bamboo cannot be broken due to too thin thickness.
Example one
A method for processing rotary slices of green bamboo segments of moso bamboos comprises the following steps:
the method comprises the following steps: selecting green bamboo segments of moso bamboo which grow for 3 years and have the wall thickness of more than 1.5 cm;
step two: putting the green bamboo segments into water of 70 ℃ for cooking for 8h to ensure that the water content of the green bamboo segments reaches more than 60%, immersing the green bamboo segments into the water in the cooking process, and turning the green bamboo segments every 1 to 2 h;
step three: wiping excess moisture on the surface of the bamboo sections after being cooked by hot cloth or drying by warm air, keeping the temperature of the bamboo sections above 65 ℃ during rotary cutting processing, and then fixing the bamboo sections above 65 ℃ on a rotary cutter to carry out rotary cutting at the main shaft rotating speed of 85r/min and the cutter feeding amount of 0.2mm/r to obtain moso bamboo rotary slices;
step four: clamping the rotary-cut moso bamboo slices between two layers of melt-blown cloth, and drying for the first time at 60 ℃ for 5min by a drying device;
step five: cutting off the rotary bamboo slices after the first drying into sheets, and then carrying out second drying at the temperature of 50 ℃ for 8 min.
Example two
A method for processing rotary slices of bamboo middle bamboo segments of moso bamboos comprises the following steps:
the method comprises the following steps: selecting bamboo middle bamboo segments of moso bamboos which grow for 3 years and have the wall thickness of more than 1.5 cm;
step two: putting the middle bamboo section into water with the temperature of 75 ℃ for stewing for 7.5h to ensure that the water content of the bamboo section of the moso bamboo reaches more than 60 percent, immersing the whole middle bamboo section into the water in the stewing process, and turning the middle bamboo section of the bamboo every 1 to 2 h;
step three: wiping excess moisture on the surface of the bamboo middle bamboo section after cooking by hot cloth or drying by warm air, keeping the temperature of the bamboo middle bamboo section at above 70 ℃ during rotary cutting processing, and then fixing the bamboo middle bamboo section at above 70 ℃ on a rotary cutter to carry out rotary cutting at the main shaft rotating speed of 85r/min and the cutter feeding amount of 0.2mm/r to obtain moso bamboo rotary cut sheets;
step four: clamping the rotary-cut moso bamboo slices between two layers of melt-blown cloth, and performing primary drying at 65 ℃ for 4.5min by a drying device;
step five: cutting off the rotary bamboo slices after the first drying into sheets, and then carrying out second drying at 55 ℃ for 7 min.
EXAMPLE III
A method for processing a tabasheer bamboo section rotary slice of a moso bamboo comprises the following steps:
the method comprises the following steps: selecting a tabasheer bamboo section of moso bamboo which is grown for 3 years and has the wall thickness of more than 1.5 cm;
step two: putting the tabasheer bamboo segments into water with the temperature of 85 ℃ for stewing for 7h to ensure that the water content of the tabasheer bamboo segments reaches more than 60 percent, immersing the tabasheer bamboo segments into the water in the stewing process, and turning the tabasheer bamboo segments at intervals of 1-2 h;
step three: wiping excess moisture on the surface of the steamed tabasheer bamboo section by hot cloth or drying by warm air, keeping the temperature of the tabasheer bamboo section at more than 75 ℃ during rotary cutting processing, and then fixing the tabasheer bamboo section at more than 75 ℃ on a rotary cutter to carry out rotary cutting at the main shaft rotating speed of 85r/min and the cutter feeding amount of 0.2mm/r to obtain moso bamboo rotary slices;
step four: clamping the rotary-cut moso bamboo slices between two layers of melt-blown cloth, and drying for the first time at 80 ℃ for 4min by a drying device;
step five: cutting off the rotary bamboo slices after the first drying into sheets, and then carrying out second drying at the temperature of 60 ℃ for 5 min.
Comparative example
A method for processing rotary slices of green bamboo segments of moso bamboos comprises the following steps:
the method comprises the following steps: selecting green bamboo segments of moso bamboo which grow for 3 years and have the wall thickness of more than 1.5 cm;
step two: fixing the green bamboo segments on a rotary cutter, and carrying out rotary cutting at the main shaft rotating speed of 85r/min and the cutter feeding amount of 0.2mm/r to obtain moso bamboo rotary slices;
step three: and (5) placing the moso bamboo rotary-cut slices at a ventilation position in a dark place for air drying for 48 hours.
TABLE 1
The parameters corresponding to the comparative examples and each example in table 1 are obtained by selecting 5 bamboo segments corresponding to the bamboo segments respectively, testing and averaging the values to obtain the parameters in table 1;
all the bamboo segments of the Phyllostachys Pubescens in Table 1 have a length of 50cm, a thickness of 15mm (within 2mm in vertical deviation) and a diameter of 50mm (within 4mm in vertical deviation).
As is clear from comparison in table 1, the average length of the rotary-cut bamboo slices of the green bamboo sections without steaming is far inferior to that of the rotary-cut bamboo slices processed by the processing method of the present application, and in the actual test process, the length difference of each rotary-cut bamboo slice in the comparative example is large, the difference between the longest length and the shortest length of the rotary-cut bamboo slice in the comparative example can reach 817cm, the difference between the longest length and the shortest length of the rotary-cut bamboo slice in the first example is 325cm, the difference between the longest length and the shortest length of the rotary-cut bamboo slice in the second example is 185, and the difference between the longest length and the shortest length of the rotary-cut bamboo slice in the third example is 465.
In conclusion, the beneficial effects provided by the invention are as follows: the mao bamboo sections are cooked and heated by using hot water with medium and high temperature, so that the physical and chemical properties of the bamboo sections of the mao bamboo can tend to be consistent, the rotary cut mao bamboo sections can be kept continuous without fracture, the waste rate in the rotary cut process of the mao bamboo is reduced, and the utilization rate of the mao bamboo is improved. The fiber bundles in the boiled moso bamboo sections can be softened, so that the moso bamboo sections can be more easily cut in a rotary cutting process, and the loss of a cutter of a rotary cutter is reduced; the water content of the bamboo sections of the bamboo can be improved to more than 60 percent after the bamboo sections are cooked, and the surfaces of the bamboo sections of the bamboo obtained after rotary cutting are very smooth. The upper and lower layers of melt-blown cloth are utilized to clamp the rotary moso bamboo slices and dry the moso bamboo, so that the loss speed of water in the dehydration process of the moso bamboo can be reduced, and the rapid dehydration and warping of the rotary moso bamboo slices in the drying process can be avoided; meanwhile, the melt-blown fabric covers the surface of the rotary-cut moso bamboo pieces, so that water must be absorbed by the melt-blown fabric before the moso bamboo is dehydrated, the water absorption efficiency of the melt-blown fabric is reduced due to the fact that the water content of a certain area of the melt-blown fabric is too high, the dehydration speed of each part of the rotary-cut moso bamboo pieces can be consistent, and the water after drying of each part of the rotary-cut moso bamboo pieces can be consistent. The moisture content of the moso bamboo rotary slices after primary drying can be reduced to 20%. The rotary-cut moso bamboo slices after primary drying are divided into sheets, so that the area of a single moso bamboo phase slice can be reduced, local cracking caused by overlarge shrinkage rate of fiber bundles in the rotary moso bamboo slices after secondary drying is avoided, and the dehydration efficiency can be improved. The time of the second drying is longer than that of the first drying, and the temperature is lower than that of the first drying, so that the sheet can have sufficient time to be dehydrated in the drying process, and particularly, the central part of the sheet can ensure that the moisture content is reduced to below 5 percent after the second drying. The thickness of the rotary-cut moso bamboo slices obtained by rotary cutting through the processing method can be controlled within 0.2mm, so that the utilization rate of the moso bamboo sections can be maximized, and the rotary-cut moso bamboo slices can be prevented from being broken due to over-thin thickness.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent modifications made by the present invention in the specification or directly or indirectly applied to the related technical field are included in the scope of the present invention.
Claims (7)
1. A processing method of a moso bamboo rotary slice is characterized by comprising the following steps:
the method comprises the following steps: putting the moso bamboo segments into water at the temperature of 70-85 ℃ for stewing for 7-8 h to enable the water content of the moso bamboo segments to reach more than 60%;
step two: and fixing the cooked moso bamboo segments on a rotary cutter for rotary cutting to obtain moso bamboo rotary slices.
2. The method for processing rotary bamboo slices as claimed in claim 1, further comprising the steps of: the rotary-cut moso bamboo slices are clamped between two layers of melt-blown cloth and then are dried for the first time through a drying device.
3. The processing method of rotary bamboo slices as claimed in claim 2, wherein the time for the first drying in the third step is 4-5 min, and the temperature for the first drying is 60-80 ℃.
4. The method for processing rotary bamboo slices as claimed in claim 1, further comprising the steps of: and cutting off and dividing the rotary bamboo slices dried for the first time into sheets, and then drying for the second time.
5. The processing method of rotary bamboo slices as claimed in claim 4, wherein the time for the second drying in the fourth step is 5-8 min, and the temperature for the second drying is 50-60 ℃.
6. The method for processing rotary bamboo slices as claimed in claim 1, wherein the rotation speed of the spindle of the rotary cutting machine in the second step is 85 r/min.
7. The method for processing rotary bamboo slices as claimed in claim 1, wherein the cutter feed of the rotary cutting machine in the second step is 0.2 mm.
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| CN109732729A (en) * | 2019-02-25 | 2019-05-10 | 南京林业大学 | A kind of manufacturing method of bamboo rotary cutting thickness veneer |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
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