CN1278827C - Grading production method of bamboo laminated timber and its use - Google Patents
Grading production method of bamboo laminated timber and its use Download PDFInfo
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Abstract
The present invention belongs to a grading production method of bamboo laminated timber and uses of the bamboo laminated timber. The grading production method of bamboo laminated timber comprises: acquisition of bamboo, gradation of the bamboo by visual observation, segmentation of the bamboo, processing of thin bamboo strips, segmentation of the thin bamboo strips, preparation of bamboo curtains, desiccation, dipping, assembly, press and edge cutting. The bamboo laminated timber made by using the grading production method is used as building structure materials, outboard sheet materials of marine vessels, cabin sheet materials of marine vessels, hull outfitting, floors and decks. In the present invention, the bamboo is divided into a high density part and a medium density part according to the physical and the mechanical properties during the time from green bamboo to yellow bamboo; high modulus type bamboo laminated timber correspondingly made for building structures and low reduction or rise type bamboo laminated timber for the use under wet environment and outdoor environment with alternation of drying and wetting substantially raises the application field of the bamboo, causes great increase of the utilization ratio of the bamboo, and saves the use cost and the consumption of wood.
Description
Technical field
The present invention relates to a kind of classification production method and products thereof purposes of bamboo cord wood, belong to building, floor peculiar to vessel, deck and cabin plate applied technical field.
Background technology
China is that the output of a bamboo timber resource abundant country, particularly mao bamboon is in first of the world.The bamboo wood application study is also paid attention to fully.Through the research of decades, a series of technology such as bamboo wood, bamboo cord wood, bamboo plywood, bamboo floor, Bamboo Formwork, bamboo compartment board and product obtain development and application.What existing bamboo cord wood production technology adopted is to mix thin bamboo strip forming method.The characteristics of its production technology are that bamboo wood is not made any distinction between, and the big thin bamboo strips used for weaving of performance difference is mixed use.It is good that the main feature of product is that material has one-way performance, intensity height, the advantage that water resistance is good.But the bamboo plywood that problem is to use mixed thin bamboo strip method to make song can occur and stick up, and bamboo curtain splint gap random distribution, transverse mechanical performance also can not get guaranteeing.Present bamboo cord wood product is mainly used in non-structural wood.
Some character of bamboo wood extensively are familiar with, and main characteristics is that radially the physics from the surf green to the tabasheer and mechanical property change greatly bamboo wood.The bamboo wood outside has the characteristics of high density, high strength and high-modulus, but since with the resin bonding poor performance, water resistance is low.The middle part of bamboo wood and inboard (removal tabasheer) still have higher intensity, and water resistance is good, and density is low, and modulus is low.The classify and grading utilization of bamboo wood is not also carried out at present both at home and abroad.
Summary of the invention
Classification production method and products thereof the purposes that the purpose of this invention is to provide a kind of bamboo cord wood, this method is divided into high density part and middle density portion with bamboo wood, correspondence is made and is used for the high-modulus structural wood that dry environment uses, and rises by the bamboo cord wood of type to be used for various uses with the low-shrinkage that uses under wet environment and dry wet alternating environment.Production method of the present invention is as follows:
(1) 4～5 years ages of bamboo are gathered in the collection of bamboo wood, and collecting location, time, quantity, personnel are put down in writing;
(2) bamboo wood range estimation classification, to the bamboo wood gathered by footpath level, degree of crook and defect system, described by footpath level be classified as choosing slightly the footpath greater than 50mm, the footpath level is divided into 8,9,10,11,12 cun according to the bamboo trunk girth diameter, bamboo wood length 5.5m～7.5m, degree of crook is divided into perfectly straight, local buckling and integrally bending bamboo wood;
(3) segmentation of bamboo wood, it is long to remove 300mm from the mao bamboon root, and by footpath level bamboo wood segmentation together, each section bamboo trunk length is 1～2.55m, or decides according to the length dimension of instructions for use;
(4) processing of bamboo strip is made bamboo strip with the bamboo trunk after the segmentation with colliding, the bamboo strip width is 15～20mm;
(5) processing of thin bamboo strips used for weaving, with middle point-score, laterally bamboo strip is done one by one to dividing, to dividing, obtain high density and low-density bamboo strip for the first time;
The high density bamboo strip laterally to dividing, is obtained wearing the thin bamboo strip and thin bamboo strips for mats, and the high density bamboo strip can break into the thin bamboo strips used for weaving of thickness 0.6～0.8mm, and the low-density bamboo strip can break into the thin bamboo strips used for weaving of thickness 1.2mm～2.4mm;
(6) classification of thin bamboo strips used for weaving according to density classification in addition, is divided into A with the high density bamboo strip, and B two-stage, A level are for wearing the thin bamboo strip, and the B level is a thin bamboo strips for mats; The low-density bamboo strip is divided into C, and the D two-stage is the D level near tabasheer one side, and the thickness of thin bamboo strips used for weaving is at 2.4mm, and all the other are the C level, and thickness is 1.5mm, and C or D level thin bamboo strips used for weaving are used in floor and deck; The direction of the rank of thin bamboo strips used for weaving, thickness, thin bamboo strip face should have the visible marking, deposits out on the shelf on the dry high ground of taking shelter from rain;
(7) preparation of bamboo curtain splint by the density thin bamboo strips used for weaving at the same level of classification in addition, uses vertical or horizontal volume machine to make bamboo curtain splint, keeps thin bamboo strips used for weaving that certain direction is arranged, and makes the slit of thin bamboo strips used for weaving that certain gradient be arranged, and the gradient is controlled at 1/100;
(8) dry, impregnation, the moisture content of bamboo curtain splint is lower than 10%, and glue content is higher than 9%;
(9) assembly, bamboo curtain splint fissure of displacement assembly, method is with the staggered assembly of R-joining bamboo curtain splint direction; According to product requirement with high density bamboo strip A, the bamboo curtain splint of B two-stage preparation, low-density bamboo strip C, the bamboo curtain splint of D two-stage preparation is regulated combination mutually, reaches the requirement of structure rating;
(10) suppress, the bamboo base behind the assembly is put in the mould pressurizeed pressure 2.5Mpa, 150 ℃ of temperature, 10～15 minutes time;
(11) cut edge, bamboo cord wood is cut edge.
The purposes of the bamboo cord wood made from above-mentioned classification production method is that the bamboo cord wood of mainly making with the bamboo curtain splint assembly of high density bamboo strip A level preparation is used for structural lumber, mainly the bamboo cord wood made from the bamboo curtain splint assembly of high density thin bamboo strip B bar level preparation is used for boats and ships outboard sheet material, mainly the bamboo cord wood made from the bamboo curtain splint assembly of low-density thin bamboo strip C bar level preparation is used for boats and ships outboard sheet material, ship dress, floor and deck, and mainly the bamboo cord wood made from the bamboo curtain splint assembly of low-density thin bamboo strip D bar level preparation is used for boats and ships cabin plate, floor, deck.
Advantage of the present invention is according to physics and the mechanical property of surf green to tabasheer, bamboo wood is divided into high density part and low-density part, correspondence is made the rise bamboo cord wood of type of the bamboo cord wood that is used for building structure high-modulus type and the low-shrinkage that uses under the outdoor environment of wet environment and alternation of wetting and drying, increased substantially the use field of bamboo wood, cause utilization rate of bamboo significantly to improve, save timber use cost and use amount.
The specific embodiment
(1) 4～5 years ages of bamboo are gathered in the collection of bamboo wood, and collecting location, time, quantity, personnel are put down in writing.
Bamboo wood belongs to natural material, and the taperingness of its kind, land occupation condition, bamboo age, footpath level, crooked degree, bamboo ancient piece of jade, round, flat and with a hole in its centre thickness and bamboo trunk etc. are all variant.Therefore can not all bamboo woods is indiscriminate, directly use.But for the simplification process, bamboo wood with whether qualified be distinguishing rule.Meet following condition according to using mao bamboon to select 4-5 for use, mao bamboon collecting location, acquisition time and collection quantity are arranged.
(2), bamboo wood range estimation classification, to the bamboo wood gathered by footpath level, degree of crook and defect system, described by footpath level be classified as choosing slightly the footpath greater than 50mm, length 5.5m～7.5m, the footpath level is divided into 8,9,10,11,12 cun according to the bamboo trunk girth diameter, degree of crook is divided into perfectly straight, local buckling and integrally bending bamboo wood.
The footpath level: the mao bamboon performance of Different Diameter level is variant, and physical dimensions such as wall thickness are also inequality, and the mao bamboon quantity of 80～90mm is maximum, and the mao bamboon that is lower than 80mm footpath level is not cooked the structural material use.The footpath level is different, and footpath and length are also different slightly.Footpath level classification is as follows:
The footpath level of table-1 mao bamboon
| Girth diameter is very little | 8 cun | 9 cun | 10 cun | Greater than 11 cun |
| Footpath mm length m slightly | ＞50 5.5-6 | ＞50 6-6.5 | ＞50 6.5-7 | ＞50 7-7.5 |
Taperingness: the tangible bamboo wood of taperingness is removed.
The degree of crook of mao bamboon is different, is divided into three types of perfectly straight, local buckling and integrally bendings.Local buckling focuses mostly at the root of mao bamboon, and integrally bending appears at the middle part of mao bamboon.The bending of mao bamboon is big to the lateral thrust influence of thin bamboo strips used for weaving, and the bamboo curtain splint of making also bigger space can take place, and influences the quality of bamboo cord wood.
Perfectly straight bamboo wood: in the scope of application of bamboo wood, do not have tangible part and integrally bending.This perfectly straight bamboo wood can be used for structure to be used with bamboo cord wood.
Local buckling: tangible local buckling appears in the mao bamboon root, uses but also can be used for the structure bamboo cord wood after removing.
Integrally bending: tangible integrally bending appears in mao bamboon, should not use as the structure bamboo cord wood.But can be used as non-structural wood uses.
The material index: the material of bamboo wood also need satisfy following requirement:
Table 2 processing bamboo wood material requirement
| The defective title | Computational methods | Allow limit |
| The withered small holes caused by worms casing coupling wound of breaking of damaging by worms of going mouldy | The interior minimum diameter of the interior length class scope of length class scope must not must not must not surpass above the degree of depth of length class above vertical maximum line length of place circumference above must not respectively being no more than the arc length width above two ends in the length class scope in the worm channel length class scope of 5mm in the interior length class scope of length class scope | Mustn't have to have to have 32 joint 30% 10% 3mm mustn't be arranged |
(3), the segmentation of bamboo wood, it is long to remove 300mm from the mao bamboon root, by with footpath level bamboo wood segmentation, each section bamboo trunk length is 1～2.55m, or decides according to the length dimension of instructions for use.
After the mao bamboon felling, because also there is variability in bamboo wood aspect height, with the mao bamboon of footpath level, the same segment method, the bamboo wood character in same section is basic identical, has reduced the influence of variability to material.
Mao bamboon root wall thickness is big, influences the taperingness and the uniformity of thin bamboo strips used for weaving, needs to remove 300mm.
According to the purpose difference of using, the segmentation method of bamboo wood is also different.The length of bamboo wood-based plate has two kinds, is respectively 1.33 meters and 2.55 meters (woolen cloth), and point-score has three kinds.
The segmentation method of table 3 bamboo wood
| Bamboo trunk | I | II | III | VI | V |
| The 1st kind the 2nd kind the 3rd kind | 1.33 1.33 2.5 | 1.33 2.55 2.5 | 1.33 2.55 1.3 | 1.33 1.3 1.33 | 1.33 |
The segmentation of bamboo wood represents that with Roman number the bottom of bamboo wood is I, is followed successively by II; III; VI; V etc.
The geometry of bamboo trunk is an ellipse, and major axis, minor axis and wall thickness are arranged.Wherein D1 is the major diameter of the big end of bamboo trunk, and D2 is a minor axis, and t1 is the bamboo wall thickness; D3 is the major diameter of bamboo trunk small end, and D4 is a minor axis, and t2 is the bamboo wall thickness.According to these data, can obtain the average diameter D of the big and small end of bamboo trunk
LAnd D
s, circularity C
LTaperingness S with Cs, bamboo trunk
bTaperingness Sw with the bamboo wall.
D
12＝(D1+D2)/2 (1)
D
34＝(D3+D4)/2 (2)
C
12＝D2/D1 (3)
C
34＝D4/D3 (4)
Sb＝(1-D
34/D
12)/L (5)
Sw＝(1-t2/t1)/L (6)
The circularity of bamboo trunk is the ratio of the short major diameter of bamboo trunk, as is 1 o'clock, and bamboo trunk is a pipe.Less than 1 is oval.The taperingness of bamboo trunk and bamboo wall has been represented the footpath of bamboo trunk and bamboo wall and the variation of thickness.These parameter characterizations the difference of bamboo trunk self.
The curved major of thin bamboo strips used for weaving will be by the crooked control of the bamboo trunk after the segmentation, and the bending that requires bamboo trunk is less than 0.5%.
At present accumulation outdoor storages that loose that adopt after mao bamboon is gathered, after the bamboo wood felling, moisture content can reduce gradually more.Owing to pile up stressed, the not influence of first-class factor of drying condition at random, bad storing mode can have influence on the bending of bamboo wood, therefore need be improved.After the bamboo wood segmentation, similar bamboo wood is tied up.On the spot deposit.Should avoid drenching with rain and soaking in the storeroom.
(4), the processing of bamboo strip, the bamboo trunk after the segmentation is made bamboo strip with colliding, the bamboo strip width is 15～20mm;
(5), the processing of thin bamboo strips used for weaving, with middle point-score, laterally bamboo strip is done one by one to dividing, to dividing, obtain high density and low-density bamboo strip for the first time; With point-score in the bamboo strip employing, 1/2 of surf green one side is the high density bamboo strip, 1/2 low-density bamboo strip of tabasheer one side.The high density bamboo strip laterally to dividing, is obtained wearing the thin bamboo strip and thin bamboo strips for mats, and the high density bamboo strip has the good broken thin bamboo strip, can break into the thin bamboo strips used for weaving of thickness 0.6～0.8mm, described geometry of wearing the thin bamboo strip is irregular, has a spot of surf green residual, its density, intensity and modulus height, cementability is poor; Described thin bamboo strips for mats regular geometry, density, intensity and modulus only are lower than wears the thin bamboo strip, but cementability is good; The low-density bamboo strip is called the end thin bamboo strip, and the broken thin bamboo strip is poor, breaks into the thin bamboo strips used for weaving of thickness 1.2mm～2.4mm;
The classification of thin bamboo strips used for weaving according to density classification in addition, is divided into A with the high density bamboo strip, and B two-stage, A level are for wearing the thin bamboo strip, and the B level is a thin bamboo strips for mats; The low-density bamboo strip is divided into C, and the D two-stage is the D level near tabasheer one side, and the thickness of thin bamboo strips used for weaving is at 2.4mm, and all the other are the C level, and thickness is 1.5mm, and C or D level thin bamboo strips used for weaving are used in floor and deck; The direction of the rank of thin bamboo strips used for weaving, thickness, thin bamboo strip face should have the visible marking, deposits out on the shelf on the dry high ground of taking shelter from rain.
Surf green one side can be made into A level thin bamboo strips used for weaving: averag density is higher than 0.8.A level thin bamboo strips used for weaving geometry is irregular, and the broken thin bamboo strip of bamboo strip is good, and the thickness of thin bamboo strips used for weaving can reach 0.6-0.8mm.The intensity of A level thin bamboo strips used for weaving, modulus, density height.The thin bamboo strips used for weaving of different segmentations, position is distinguished in further adopting process classification, in order to regulate the performance of material.
The high density bamboo strip in addition 1/2 make B level thin bamboo strips used for weaving: averag density is between 0.7-0.8.B level thin bamboo strips used for weaving regular geometry, the broken thin bamboo strip of bamboo strip is good, and the thickness of thin bamboo strips used for weaving can reach 0.6-0.8mm.Intensity, modulus, the density of B level thin bamboo strips used for weaving are higher.The thin bamboo strips used for weaving of different segmentations, position is distinguished in further adopting process classification, in order to regulate the performance of material.
C level thin bamboo strips used for weaving: averag density is between 0.6-0.7.C level thin bamboo strips used for weaving regular geometry, the broken thin bamboo strip of bamboo strip is poor, and the thickness of thin bamboo strips used for weaving is about 1.5mm.C level thin bamboo strips used for weaving has low collapsibility, and hardness and intensity are higher, and cementability is good.The thin bamboo strips used for weaving of different segmentations, position is distinguished in further adopting process classification, in order to regulate the performance of material.
D level thin bamboo strips used for weaving: averag density is lower than 0.6.D level thin bamboo strips used for weaving regular geometry, the broken thin bamboo strip of bamboo strip is poor, and ring place intensity is low, is easy to fracture.The THICKNESS CONTROL of thin bamboo strips used for weaving is at 2.4mm.The non-structural material such as floor that is used for of D level thin bamboo strips used for weaving uses.
The direction of the rank of thin bamboo strips used for weaving, thickness, thin bamboo strip face should have obviously, mark clearly.
The storage of bamboo strip and thin bamboo strips used for weaving should place drying, on the shelf of 0.5 meter of the built on stilts of taking shelter from rain.
(6), the preparation of bamboo curtain splint, by the density thin bamboo strips used for weaving at the same level of classification in addition, use vertical or horizontal volume machine to make bamboo curtain splint, keep thin bamboo strips used for weaving that certain direction is arranged, make the slit of thin bamboo strips used for weaving that certain gradient be arranged, the gradient is controlled at 1/100.
The preparation of bamboo curtain splint utilizes the taperingness of thin bamboo strips used for weaving to make the R-joining bamboo curtain splint, and method is the equidirectional volume curtain of thin bamboo strips used for weaving that some are had certain taperingness, and when the gradient of thin bamboo strips used for weaving reached requirement, the direction of thin bamboo strips used for weaving can replace mutually.The gradient 1/100～1/150 of described R-joining bamboo curtain splint thin bamboo strips used for weaving, the slit of thin bamboo strips used for weaving is 0.5～3mm in the bamboo curtain splint, and the union twist yarn spacing is 0.3m, and the direction of the rank of bamboo curtain splint, thickness, thin bamboo strip face should have the visible marking, deposits out on the shelf on the dry high ground of taking shelter from rain.
Bamboo curtain splint is the thin bamboo strips used for weaving that will certain taperingness be arranged becomes the direction unanimity with union twist yarn a bamboo curtain splint.The subject matter of bamboo curtain splint is slit and the space between thin bamboo strips used for weaving, and thin bamboo strips used for weaving also has defectives such as lateral thrust except that taperingness, thus cause exist between bamboo curtain splint not of uniform size, the space that the position is indefinite.If the lateral thrust degree of thin bamboo strips used for weaving is not limited, the space can surpass the width of thin bamboo strips used for weaving, and the uniformity of bamboo curtain splint is damaged.
The bamboo curtain splint slit refers to such an extent that be normal gap between thin bamboo strips used for weaving, because the taperingness of thin bamboo strips used for weaving, the direction of thin bamboo strips used for weaving (concentric reducer) does not have regulation, but keeps balance substantially.There are two kinds of vertical masonry joint and R-joinings in the slit.
Normal slit is subjected to the influence of union twist yarn elasticity between bamboo curtain splint, needs to determine the trade mark and the specification of union twist yarn, to ensure the quality of products.Also note each link when compiling curtain in addition, comprise the push-tight of thin bamboo strips used for weaving, the tightening etc. of union twist yarn.
The bamboo curtain splint of explained hereafter be difficult to during assembly avoid concentrating of slit occurring, and the slit of concentrating will have influence on the uniformity and the mechanical property of material at present.This is that structural material should be limited, and being staggered in the slit is that structural material institute is essential.
The taperingness that thin bamboo strips used for weaving is gone up along its length is similar substantially, greatly between 9-15%.As adopt mechanical means processing bamboo strip, then can guarantee the taperingness that thin bamboo strips used for weaving is gone up along its length.Therefore utilize this characteristic to can be made into oblique curtain, method is very simple, only the thin bamboo strips used for weaving concentric reducer clocklike need be concentrated and be put, and then can make the R-joining bamboo curtain splint.Bamboo curtain splint is divided into the oblique and right oblique two kinds of directions in a left side.Described bamboo wood with the low-density bamboo strip is divided into C and two kinds of thin bamboo strips used for weavings of D, adds and adjusts the performance that its assembly ratio can be controlled product man-hour.
(7), dry, impregnation, the moisture content of bamboo curtain splint is lower than 10%, glue content is higher than 9%;
(8), assembly, bamboo curtain splint fissure of displacement assembly, method is with the staggered assembly of R-joining bamboo curtain splint direction.Avoid concentrating of slit, solved the problem of concentrating in slit.According to product requirement with high density bamboo strip A, the bamboo curtain splint of B two-stage preparation, low-density bamboo strip C, the bamboo curtain splint of D two-stage preparation is regulated combination mutually, reaches the requirement of structure rating;
(9), compacting, the bamboo base behind the assembly put in the mould pressurizes pressure 2.5Mpa, 150 ℃ of temperature, 10～15 minutes time;
(10), cut edge, bamboo cord wood is cut edge.Cut edge, to the parallel side cut of blank, the perpendicularity of adjacent side has the specific requirement cutting as requested.
The purposes of the bamboo cord wood made from above-mentioned classification production method is that the bamboo cord wood of mainly making with the bamboo curtain splint assembly of high density bamboo strip A level preparation is used for structural lumber, for example with the bamboo curtain splint that accounts for the high density bamboo strip A level preparation more than 55%, mix the bamboo cord wood that common assembly is made at interval with the bamboo curtain splint that accounts for the preparation of 45% high density thin bamboo strip B bar level, can be used for structural lumber, or other structure material.
Mainly the bamboo cord wood made from the bamboo curtain splint assembly of high density thin bamboo strip B bar level preparation is used for boats and ships outboard sheet material, for example be positioned at the bamboo cord wood two sides with the bamboo curtain splint that accounts for the high density bamboo strip B level preparation more than 61%, mix the bamboo cord wood that common assembly placed in the middle is made at interval with the bamboo curtain splint that accounts for the preparation of 20% low-density thin bamboo strip C bar level with the bamboo curtain splint that accounts for the preparation of 19% low-density thin bamboo strip D bar level, can be used for boats and ships outboard sheet material.
Mainly the bamboo cord wood made from the bamboo curtain splint assembly of low-density thin bamboo strip C bar level preparation is used for boats and ships outboard sheet material, ship dress, floor and deck, and mainly the bamboo cord wood made from the bamboo curtain splint assembly of low-density thin bamboo strip D bar level preparation is used for boats and ships cabin plate, floor, deck.
Claims (2)
1. the classification production method of a bamboo cord wood is characterized in that:
(1) 4～5 years ages of bamboo are gathered in the collection of bamboo wood, and collecting location, time, quantity, personnel are put down in writing;
(2) bamboo wood range estimation classification, to the bamboo wood gathered by footpath level, degree of crook and defect system, described by footpath level be classified as choosing slightly the footpath greater than 50mm, the footpath level is divided into 8,9,10,11,12 cun according to the bamboo trunk girth diameter, bamboo wood length 5.5m～7.5m, degree of crook is divided into perfectly straight, local buckling and integrally bending bamboo wood;
(3) segmentation of bamboo wood, it is long to remove 300mm from the mao bamboon root, and by footpath level bamboo wood segmentation together, each section bamboo trunk length is 1～2.55m, or decides according to the length dimension of instructions for use;
(4) processing of bamboo strip is made bamboo strip with the bamboo trunk after the segmentation with colliding, the bamboo strip width is 15～20mm;
(5) processing of thin bamboo strips used for weaving, with middle point-score, laterally bamboo strip is done one by one to dividing, to dividing, obtain high density and low-density bamboo strip for the first time;
The high density bamboo strip laterally to dividing, is obtained wearing the thin bamboo strip and thin bamboo strips for mats, and the high density bamboo strip can break into the thin bamboo strips used for weaving of thickness 0.6～0.8mm, and the low-density thin bamboo strip can break into the thin bamboo strips used for weaving of thickness 1.2mm～2.4mm;
(6) classification of thin bamboo strips used for weaving according to density classification in addition, is divided into A with the high density bamboo strip, and B two-stage, A level are for wearing the thin bamboo strip, and the B level is a thin bamboo strips for mats; The low-density bamboo strip is divided into C, and the D two-stage is the D level near tabasheer one side, and the thickness of thin bamboo strips used for weaving is at 2.4mm, and all the other are the C level, and thickness is 1.5mm, and C or D level thin bamboo strips used for weaving are used in floor and deck; The direction of the rank of thin bamboo strips used for weaving, thickness, thin bamboo strip face should have the visible marking, deposits out on the shelf on the dry high ground of taking shelter from rain;
(7) preparation of bamboo curtain splint by the density thin bamboo strips used for weaving at the same level of classification in addition, uses vertical or horizontal volume machine to make bamboo curtain splint, keeps thin bamboo strips used for weaving that certain direction is arranged, and makes the slit of thin bamboo strips used for weaving that certain gradient be arranged, and the gradient is controlled at 1/100;
(8) dry, impregnation, the moisture content of bamboo curtain splint is lower than 10%, and glue content is higher than 9%;
(9) assembly, bamboo curtain splint fissure of displacement assembly, method is with the staggered assembly of R-joining bamboo curtain splint direction; According to product requirement with high density bamboo strip A, the bamboo curtain splint of B two-stage preparation, low-density bamboo strip C, the bamboo curtain splint of D two-stage preparation is regulated combination mutually, reaches the requirement of structure rating;
(10) suppress, the bamboo base behind the assembly is put in the mould pressurizeed pressure 2.5Mpa, 150 ℃ of temperature, 10～15 minutes time;
(11) cut edge, bamboo cord wood is cut edge.
2. the purposes of the bamboo cord wood that classification production method according to claim 1 is made, it is characterized in that: mainly the bamboo cord wood made from the bamboo curtain splint assembly of high density bamboo strip A level preparation is used for structural lumber, mainly the bamboo cord wood made from the bamboo curtain splint assembly of high density thin bamboo strip B bar level preparation is used for boats and ships outboard sheet material, mainly the bamboo cord wood made from the bamboo curtain splint assembly of low-density thin bamboo strip C bar level preparation is used for boats and ships outboard sheet material, the ship dress, floor and deck, mainly the bamboo cord wood made from the bamboo curtain splint assembly of low-density thin bamboo strip D bar level preparation is used for boats and ships cabin plate, the floor, the deck.
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2004
- 2004-09-17 CN CN 200410009571 patent/CN1278827C/en not_active Expired - Fee Related
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| CN1597276A (en) | 2005-03-23 |
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