CN101486208A - Bamboo wood composite plywood for concrete form panel and manufacturing method thereof - Google Patents
Bamboo wood composite plywood for concrete form panel and manufacturing method thereof Download PDFInfo
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- CN101486208A CN101486208A CNA2008101190008A CN200810119000A CN101486208A CN 101486208 A CN101486208 A CN 101486208A CN A2008101190008 A CNA2008101190008 A CN A2008101190008A CN 200810119000 A CN200810119000 A CN 200810119000A CN 101486208 A CN101486208 A CN 101486208A
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Abstract
The invention relates to a bamboo wood composite plywood for a concrete template and a method for manufacturing the same. The bamboo wood composite plywood is provided with a body which is manufactured from a first log rotary cut veneer and a bamboo curtain in alternate arrangement through hot pressing; the body has odd layers; and the first log rotary cut veneer is positioned on the surface layer of the body. The outer side of the body can also be a composite bamboo mat or a veneer. The method for manufacturing the bamboo wood composite plywood comprises the steps of carrying out assembly, prepressing, aging, and hot pressing on the log rotary cut veneer, the bamboo curtain and/or the bamboo mat, and the like. The bamboo wood composite plywood realizes combination of bamboo and the log rotary cut veneer, improves the utilization rate of wood and the bamboo, simultaneously improves the performance greatly, has a more stable structure, and greatly improves bonding strength and transverse static bending strength; and in the manufacturing process, the method does not need to carry out complex gum dipping and other treatment on the bamboo curtain, the bamboo mat, and the like, greatly reduces the use amount of an adhesive, reduces the machining cost, and is favorable for environmental protection.
Description
Technical field
The invention belongs to wood processing field, relate in particular to a kind of bamboo wood composite plywood for concrete form panel and manufacture method thereof, this bamboo wood composite veneer be a kind of be raw material with artificial bamboo wood and timber, the glued board of making by hot pressing.
Background technology
Structural plywood comprises that building template, container floor, automobile bodies floor, timber structure cladding plate etc. are applied to the glued board of primary structure member, generally be to adopt adhesive such as phenolic resins or isocyanates, carry out hot pressing again and make after the gummeds such as wood single-plate or bamboo curtain splint, bamboo mat.Wherein, bamboo structure glued board large usage quantity, but its processing technology complexity; wherein the impregnation operation that bamboo wood is carried out requires height to control of process condition, and process cycle is long, and the adhesive consumption is big; both be unfavorable for enhancing productivity, reduced cost, also be unfavorable for environmental protection.Existing bamboo structure glued board processing technology mainly comprises following technological process:
Former bamboo → transversal → cut open bamboo → open bar → go to save → go surf green, tabasheer → the cut open thin bamboo strip → system bamboo curtain splint, bamboo mat → drying → impregnation → drying → assembly → hot pressing → display → cutting edge, sanding → check, warehouse-in.
02219712.5 number utility model patent discloses a kind of bamboo wood composite joiner's board that can be used as building template, it is to form sandwich layer in the mode that bamboo chip and batten mix, and is skin-material with bamboo mat and bamboo curtain splint, makes through assembly, gluing and hot pressing.But the swage set loss of batten work in-process is bigger, utilize the sheet material of the disclosed technical scheme processing of this utility model patent large format to have certain difficulty, and the sheet material overall performance after the processing is relatively poor.
Developing a kind of new bamboo wood composite veneer, the premium properties of bamboo wood and timber is combined, give full play to bamboo wood and timber advantage separately, obtain quality height, glued board that intensity is high, is the wood processing field problem demanding prompt solution.And how research rationally utilizes wood single-plate to come the new technology of manufacturing structure glued board efficiently, how research utilizes low density artificial forest wood to be the high-strength at a low price structural plywood of raw material manufacturing, utilizes nervous situation significant to alleviating timber resources.
Summary of the invention
For solving the problems of the technologies described above, the object of the present invention is to provide a kind of bamboo wood composite veneer, this bamboo wood composite veneer is with timber instead of part bamboo wood, form by rounding veneer, bamboo curtain splint and/or the hot pressing of bamboo mat gummed, the sound construction of this glued board, intensity height are particularly suitable for as concrete blinding.
The present invention also aims to provide a kind of manufacture method of above-mentioned bamboo wood composite veneer, this method adopts rounding veneer and bamboo wood to make the bamboo wood composite veneer, does not need bamboo wood carried out operations such as impregnation, and it is simple to have technology, the adhesive consumption is few, characteristics such as timber utilization rate height.
For achieving the above object, the invention provides a kind of bamboo wood composite veneer, it has by the first rounding veneer and bamboo curtain splint interval assembly, and by the body that hot pressing is made, wherein, this body is an odd-level, and the first rounding veneer is positioned at the surface of body.
In bamboo wood composite veneer provided by the invention, the body of being made up of the first rounding veneer and bamboo curtain splint plays a major role for the mechanical properties such as intensity of bamboo wood composite veneer.According to concrete technical scheme of the present invention, this body can be directly as the glued board final products, preferably, for making the bamboo wood composite veneer have the comparison even curface, two surfaces of body can also be compounded with one deck bamboo mat or the second rounding veneer respectively, form the top layer of bamboo wood composite veneer.The above-mentioned bamboo mat or the second rounding veneer are compound by hot pressing with the first rounding veneer, bamboo curtain splint, not only for bamboo wood composite veneer of the present invention provides even curface, but also can make certain contribution for the mechanical property of bamboo wood composite veneer.
Bamboo wood composite veneer provided by the invention can satisfy the requirement of different environments for use to plywood character, for further improving its wearability and aesthetic property, can be on the top layer of bamboo wood composite veneer, preferably on the outer surface of the bamboo mat or the second rounding veneer, paste impregnated paper respectively, this impregnated paper is this area a kind of material commonly used, for example resin impregnating paper, melamine impregnated paper etc. when sheet material is carried out veneer or overlay film.This type of impregnated paper obtains certain thickness paper by the dipping adhesive, can contain a certain amount of adhesive in the impregnated paper, can be by hot pressing or cold moudling.
According to concrete technical scheme of the present invention, the first rounding veneer of the present invention, the second rounding veneer, bamboo mat and bamboo curtain splint etc. all can adopt the finished product of machine-shaping, also can process acquisition according to the processing technology that adopt usually this area.
Preferred bamboo wood composite veneer provided by the invention, can by the first rounding veneer, the second rounding veneer, bamboo curtain splint and/or bamboo mat according to the odd-level assembly after the gummed hot pressing form, wherein, the thickness of the first rounding veneer can be about 1.5-8.0 millimeter, moisture content may be controlled to 6%-12%, the thickness of the second rounding veneer can be lower than the first rounding veneer, is generally the 0.5-3.0 millimeter, and moisture content may be controlled to 6%-12%.Being suitable for rotary-cut makes the log of the above-mentioned first rounding veneer and the second rounding veneer and comprises in quick growth poplar wood, masson pine, larch, China fir and the Eucalyptus etc. one or more; The thickness of bamboo curtain splint may be controlled to the 1.0-4.5 millimeter, and the thickness of bamboo mat can be controlled at the 0.5-2.5 millimeter, and moisture content may be controlled to 6%-12%, and its raw material can be selected bamboo wood commonly used for use, for example mao bamboon etc.
According to concrete technical scheme of the present invention, the body of bamboo wood composite veneer can comprise the two-layer at least first rounding veneer and one deck bamboo curtain splint at least; As preferred scheme, can also be with the two-layer second rounding veneer or bamboo mat top layer as the bamboo wood composite veneer, be separately positioned on the outer surface (promptly being positioned at the surface that does not contact of the two-layer first rounding veneer on body top layer) of the first rounding veneer that is positioned at the top layer with bamboo curtain splint, at this moment, the first rounding veneer is positioned at the inferior top layer of bamboo wood composite veneer:
Wherein, 1, with bamboo mat during as the top layer: this bamboo wood composite veneer comprises two-layer bamboo mat, the two-layer at least first rounding veneer and one deck bamboo curtain splint at least;
2, with the second rounding veneer during as the top layer: this bamboo wood composite veneer comprises the two-layer second rounding veneer, the two-layer at least first rounding veneer and one deck bamboo curtain splint at least.
The total number of plies of bamboo wood composite veneer provided by the invention is an odd number, and its thickness may be controlled to the 9-28 millimeter; Preferably, total number of plies of bamboo wood composite veneer (comprising the bamboo mat and the second rounding veneer) is the 3-21 layer.
In bamboo wood composite veneer of the present invention, when the top layer was the first rounding veneer, secondly the top layer was a bamboo curtain splint, and the first rounding veneer and bamboo curtain splint are provided with at interval, and the first rounding veneer does not contact each other, and bamboo curtain splint does not contact each other yet;
When the top layer was bamboo mat, inferior top layer was the first rounding veneer, and the first rounding veneer both sides are bamboo curtain splint and/or bamboo mat, and the first rounding veneer does not contact each other, and bamboo curtain splint does not contact each other yet;
When the top layer was the second rounding veneer, inferior top layer was the first rounding veneer, and the bamboo curtain splint both sides are the first rounding veneer, and the first rounding veneer does not contact each other, and bamboo curtain splint does not contact each other yet.
As non-limiting embodiment of the present invention, the compound mode of bamboo wood composite veneer provided by the invention can be exemplified below:
When 1, the bamboo wood composite veneer was three layers, it can comprise: the two-layer first rounding veneer and one deck bamboo curtain splint, and wherein, the top layer is the first rounding veneer, sandwich layer is a bamboo curtain splint;
When 2, the bamboo wood composite veneer was five layers, it can comprise:
(1) three layer of first rounding veneer and two-layer bamboo curtain splint, wherein, the top layer of glued board is the first rounding veneer, and inferior top layer is a bamboo curtain splint, and sandwich layer is one deck first rounding veneer; Perhaps,
(2) two-layer bamboo mat, the two-layer first rounding veneer and one deck bamboo curtain splint, wherein, the top layer of glued board is a bamboo mat, and inferior top layer is the first rounding veneer, and sandwich layer is one deck bamboo curtain splint; Perhaps,
(3) the two-layer first rounding veneer, one deck bamboo curtain splint and the two-layer second rounding veneer, wherein, the top layer of glued board is the second rounding veneer, and inferior top layer is the first rounding veneer, and sandwich layer is one deck bamboo curtain splint;
When 3, the bamboo wood composite veneer was seven layers, it can comprise:
(1) four layer of first rounding veneer and three layers of bamboo curtain splint, wherein, the top layer of glued board is the first rounding veneer, and inferior top layer is a bamboo curtain splint, sandwich layer is the two-layer first rounding veneer and one deck bamboo curtain splint that is provided with at interval, and this bamboo curtain splint is between the two-layer first rounding veneer; Perhaps,
(2) two-layer bamboo mat, three layer of first rounding veneer and two-layer bamboo curtain splint, wherein, the top layer of glued board is a bamboo mat, and inferior top layer is the first rounding veneer, sandwich layer is one deck first rounding veneer and the two-layer bamboo curtain splint that is provided with at interval, and this first rounding veneer is between two-layer bamboo curtain splint; Perhaps,
(3) the two-layer second rounding veneer, three layer of first rounding veneer and two-layer bamboo curtain splint, wherein, the top layer of glued board is the second rounding veneer, inferior top layer is the first rounding veneer, sandwich layer is two-layer bamboo curtain splint and one deck first rounding veneer that is provided with at interval, and this first rounding veneer is between two-layer bamboo curtain splint;
When 4, the bamboo wood composite veneer was nine layers, it can comprise:
(1) five layer of first rounding veneer and four layers of bamboo curtain splint, wherein, the top layer of glued board is the first rounding veneer, and inferior top layer is a bamboo curtain splint, and sandwich layer is three layer of first rounding veneer and the two-layer bamboo curtain splint that is provided with at interval, and bamboo curtain splint does not contact each other; Perhaps,
(2) two-layer bamboo mat, four layer of first rounding veneer and three layers of bamboo curtain splint, wherein, the top layer of glued board is a bamboo mat, and inferior top layer is the first rounding veneer, sandwich layer is the two-layer first rounding veneer and the three layers of bamboo curtain splint that are provided with at interval, and the first rounding veneer does not contact each other; Perhaps,
(3) the two-layer second rounding veneer, four layer of first rounding veneer and three layers of bamboo curtain splint, wherein, the top layer of glued board is the second rounding veneer, inferior top layer is the first rounding veneer, sandwich layer is three layers of bamboo curtain splint and the two-layer first rounding veneer that is provided with at interval, and the first rounding veneer does not contact each other;
5, when the bamboo wood composite veneer be more than nine layers the time, its compound mode and above-mentioned compound mode of giving an example are similar.
Except that specifying, " top layer " mentioned among the present invention is meant the outermost layer of bamboo wood composite veneer, can be described as " top layer up and down " or " dash board ", according to its concrete structure, can be the first rounding veneer, bamboo mat or the second rounding veneer; The second layer adjacent with top layer up and down can be referred to as " inferior top layer " or " inferior dash board ", can be first rounding veneer or the bamboo curtain splint.
The present invention also provides the manufacture method of above-mentioned bamboo wood composite veneer, and it can may further comprise the steps:
Is that 1.5-8.0 millimeter, moisture content are that the first rounding veneer of 6%-12% and thickness are that 1.0-4.5 millimeter, moisture content are that the bamboo curtain splint of 6%-12% is provided with at interval by odd-level assembly method with thickness, obtain slab through gluing and assembly, and coated face is the cemented surface of the first rounding veneer;
At room temperature slab is carried out precompressed;
The slab of finishing precompressed is displayed processing;
The slab that passes through precompressed and display is carried out hot pressing.
According to specific embodiments of the present invention, when the manufacturing top layer is the bamboo wood composite veneer of the bamboo mat or the second bamboo wood composite veneer, manufacture method provided by the invention can also comprise: on two surfaces of slab one deck bamboo mat or the second rounding veneer are set respectively, form the top layer of slab, and, in the gluing process, the first rounding veneer is carried out double spread.In concrete the enforcement, with first rounding veneer and the bamboo curtain splint, and be positioned at the bamboo mat on top layer or the second rounding veneer on request assembly obtain slab (being the slab of bamboo wood composite veneer), wherein, the first rounding veneer is positioned at the inferior top layer of slab, then through precompressed, display with step such as hot pressing and just can obtain bamboo wood composite veneer of the present invention.
According to the preferred embodiments of the invention, the manufacture method of bamboo wood composite veneer provided by the invention can also comprise the step that pastes impregnated paper: paste impregnated paper respectively on the top layer of the bamboo wood composite veneer that hot pressing is obtained, soon impregnated paper pastes the outer surface at the bamboo mat that is positioned at bamboo wood composite veneer top layer or the second rounding veneer, through hot pressing or cold moudling, perhaps also can be before slab be carried out precompressed and hot pressing, just impregnated paper is pasted on the top layer of slab, when slab is carried out precompressed and hot pressing, it is molded on the top layer of bamboo wood composite veneer then, obtains being covered with the bamboo wood composite veneer of impregnated paper.
According to concrete technical scheme of the present invention, the first above-mentioned rounding veneer, the second rounding veneer, bamboo curtain splint, bamboo mat etc. all can be the finished products of machine-shaping, the processing technology that also can adopt this area routine is processed log and bamboo wood and is obtained, for example:
The processing technology step of rounding veneer comprises: 1, saw cut, rotary-cut: log is sawn into juggle by preliminary dimension, and is peeled into the rounding veneer; 2, drying: utilize drying equipment that the rounding veneer is carried out drying; 3, shear: will be processed into preliminary dimension through the rounding veneer of super-dry;
The processing technology step of bamboo curtain splint and bamboo mat comprises: 1, bamboo blocked, cuts open bamboo, remove joint, go green grass or young crops to remove Huang, cut open the thin bamboo strip and be processed into bamboo mat or bamboo curtain splint; 2, drying: utilize drying equipment that bamboo mat and bamboo curtain splint are carried out drying, make it reach certain moisture content; 3, shear: will be processed into preliminary dimension through the bamboo mat and the bamboo curtain splint of super-dry.
In actual production, the manufacturing technology steps of the procedure of processing of rounding veneer, bamboo curtain splint and bamboo mat and bamboo wood composite veneer can form a complete technological process, the manufacture method of bamboo wood composite veneer provided by the invention also can comprise the step of processing log rotary cut venner, bamboo curtain splint and/or bamboo mat, but does not represent the manufacture method of bamboo wood composite veneer provided by the invention must comprise above-mentioned procedure of processing.
In specific embodiments of the present invention, can be according to the thickness of the bamboo wood composite veneer that will make, select the first rounding veneer, the second rounding veneer, bamboo curtain splint and/or bamboo mat, then the first rounding veneer and bamboo curtain splint, composite surface (cemented surface) coated with adhesive (adhesive all is to be coated on the surface of the first rounding veneer) of bamboo mat or the contact of the second rounding veneer, again according to odd-level assembly method with the first rounding veneer, bamboo curtain splint, the second rounding veneer and/or bamboo mat are formed needed slab (when assembly, precompressed and hot-pressing processing after considering, should make the thickness of the thickness of slab) greater than the bamboo wood composite veneer, then slab is carried out processing such as precompressed and hot pressing, obtain predetermined bamboo wood composite veneer; Wherein, when the first rounding veneer was carried out gluing, the adhesive that is adopted was glued board manufacturing field various adhesive commonly used, for example synvaren, isocyanates water-resistant adhesive etc., and glue-spread may be controlled to 260-400g/m
2About, help satisfying the performance requirements such as bond strength of final glued board like this.
According to concrete technical scheme of the present invention, to the slab behind the assembly at room temperature precompressed 10-30 minute earlier, be convenient to further hot pressing, the pressure during precompressed should should not be higher than 0.8MPa generally speaking less than the pressure of exerting pressure of first section hot pressing.After the precompressed, slab is displayed processing, assembly time may be controlled to 60-180 minute.
In manufacture method provided by the invention, the slab that passes through precompressed and display is carried out hot pressing to be meant under 125 ℃-155 ℃ temperature, the slab that passes through precompressed and display is carried out two-part hot pressing in proper order, first section hot pressing condition is: hot pressing pressure 1.2-4.0MPa, the duration 1.0-2.0min/mm that exerts pressure (is benchmark with the thickness without the slab of precompressed); Second section hot pressing condition is: hot pressing pressure 0.3-0.6MPa, exerted pressure duration 1-3 minute.
Bamboo wood composite veneer of the present invention adopts the rounding veneer to combine with bamboo wood, promoted of the application of rotary-cut technology, improved the utilization rate of timber and bamboo wood, reduced the manufacturing cost of glued board in the glued board field, wherein, timber utilization rate can improve 10% at least; And the bamboo wood composite veneer of manufacturing of the present invention is fit to be used as building template, concrete blinding especially, its quality and the performance correlation technique index in the GB/T17656-1999.
The manufacture method of bamboo wood composite veneer provided by the invention combines the existing technology of bamboo wood and wood gluing plate, existing bamboo plywood processing technology is simplified, need not bamboo curtain splint and bamboo mat etc. is carried out complicated processing such as impregnation, significantly reduced the consumption of adhesive, reduced processing cost, reduced the adhesive consumption simultaneously and also help environmental protection.Adopt the manufacture method of bamboo wood composite veneer provided by the invention, can effectively enhance productivity, the performance of the bamboo wood composite veneer of making has also obtained significantly to improve, and structure is more stable, and its bonding strength and horizontal MOR all are greatly improved; Adopt the rounding veneer, can also effectively improve the wood utilization rate.
Description of drawings
Fig. 1 is the assembly structural representation of the bamboo wood composite veneer of the embodiment of the invention 1 and 2.
Fig. 2 is the assembly structural representation of the bamboo wood composite veneer of the embodiment of the invention 3.
The drawing reference numeral explanation:
Bamboo mat 1 first rounding veneer 2 bamboo curtain splints 3 second rounding veneers 4
The specific embodiment
Below further introduce enforcement of the present invention and effect thereof by specific embodiment, purpose is to help the reader to understand essence of the present invention and spirit better, can not constitute the qualification to the scope of the present invention.
Bamboo wood composite veneer provided by the invention can be composited by rounding veneer, bamboo mat, bamboo curtain splint, also can be composited by rounding veneer and bamboo curtain splint, and its manufacture method can comprise following three kinds of concrete steps:
One, the compound bamboo wood composite veneer of the first rounding veneer, bamboo mat and bamboo curtain splint:
1, saw cut, rotary-cut: log is sawn into juggle by preliminary dimension, and is peeled into the first rounding veneer;
2, bamboo mat, bamboo curtain splint processing: bamboo is blocked, cuts open bamboo, removes joint, goes green grass or young crops to remove Huang, cuts open the thin bamboo strip and be processed into bamboo mat and bamboo curtain splint;
3, drying: utilize drying equipment that the first rounding veneer, bamboo mat and bamboo curtain splint are carried out drying;
4, shear: will be processed into preliminary dimension through the first rounding veneer, bamboo mat and the bamboo curtain splint of super-dry;
5, impregnation, gluing: the first rounding veneer is carried out double spread;
6, assembly: with the first rounding veneer, bamboo curtain splint and bamboo mat assembly, obtain slab, the top layer of slab is a bamboo mat, and inferior top layer is the first rounding veneer of gluing, when slab is more than 5 layers the time, sandwich layer is first rounding veneer and/or the bamboo curtain splint that is provided with at interval;
7, precompressed: slab is carried out precompressed;
8, display: the slab of finishing precompressed is displayed processing;
9, hot pressing: the slab that passes through precompressed and display is carried out hot pressing;
10, cutting edge: after the cooling of the slab after the hot pressing, according to the preliminary dimension cutting edge;
11, sanding, grade: will cut out the limit the glued board sanding, grade.
Two, the compound bamboo wood composite veneer of the first rounding veneer and bamboo curtain splint:
1, saw cut, rotary-cut: log is sawn into juggle by preliminary dimension, and is peeled into the first rounding veneer;
2, bamboo curtain splint processing: bamboo is blocked, cuts open bamboo, removes joint, goes green grass or young crops to remove Huang, cuts open the thin bamboo strip and be processed into bamboo curtain splint;
3, drying: utilize drying equipment that the first rounding veneer and bamboo curtain splint are carried out drying;
4, shear: will be processed into preliminary dimension through the first rounding veneer and the bamboo curtain splint of super-dry;
5, impregnation, gluing: the composite surface that contacts with bamboo curtain splint to the first rounding veneer carries out gluing, promptly the first rounding veneer that is positioned at the top layer is carried out single spreading, and other first rounding veneers are carried out double spread;
6, assembly: the first rounding veneer and bamboo curtain splint are provided with assembly at interval, obtain slab, the top layer of slab is the first rounding veneer of single spreading, and inferior top layer is a bamboo curtain splint;
7, precompressed: slab is carried out precompressed;
8, display: the slab of finishing precompressed is displayed processing;
9, hot pressing: the slab that passes through precompressed and display is carried out hot pressing;
10, cutting edge: after the cooling of the slab after the hot pressing, according to the preliminary dimension cutting edge;
11, sanding, grade: will cut out the limit the glued board sanding, grade.
Three, the first rounding veneer, the second rounding veneer and the compound bamboo wood composite veneer of bamboo curtain splint:
1, saw cut, rotary-cut: log is sawn into juggle by preliminary dimension, and is peeled into the first rounding veneer, the second rounding veneer;
2, bamboo curtain splint processing: bamboo is blocked, cuts open bamboo, removes joint, goes green grass or young crops to remove Huang, cuts open the thin bamboo strip and be processed into bamboo curtain splint;
3, drying: utilize drying equipment that the first rounding veneer, the second rounding veneer and bamboo curtain splint are carried out drying;
4, shear: will be processed into preliminary dimension through the first rounding veneer, the second rounding veneer and the bamboo curtain splint of super-dry;
5, impregnation, gluing: the first rounding veneer is carried out double spread;
6, assembly: with the second rounding veneer, the first rounding veneer and bamboo curtain splint assembly, obtain slab, the top layer of slab is the second rounding veneer, and inferior top layer is the first rounding veneer, sandwich layer is a bamboo curtain splint, perhaps the bamboo curtain splint and the first rounding veneer that is provided with at interval;
7, precompressed: slab is carried out precompressed;
8, display: the slab of finishing precompressed is displayed processing;
9, hot pressing: the slab that passes through precompressed and display is carried out hot pressing;
10, cutting edge: after the cooling of the slab after the hot pressing, according to the preliminary dimension cutting edge;
11, sanding, grade: will cut out the limit the glued board sanding, grade.
Wherein, in above-mentioned manufacture method, step 1-4 is the manufacturing technology steps of the first rounding veneer, the second rounding veneer, bamboo mat and/or bamboo curtain splint; In actual production, can adopt the first rounding veneer, the second rounding veneer, bamboo mat and/or the bamboo curtain splint etc. of machine-shaping to process, but step 1-4 is not the steps necessary in the manufacture process of bamboo wood composite veneer provided by the invention.
Embodiment 1, mao bamboon, China fir composite concrete building template
As shown in Figure 1, this concrete building template (is the bamboo wood composite veneer, also can be described as bamboo China fir composite concrete building template) comprise nine layers, the top layer of its slab is the bamboo mat 1 of 1.1 millimeters thick, inferior top layer is the China fir veneer (the first rounding veneer) 2 of 2.5 millimeters thick, the bamboo curtain splint 3 that middle five layers (sandwich layers) are 1.1 millimeters thick and the China fir veneer 2 of 2.5 millimeters thick, the material of each layer as can be seen just from the cross section; This slab is 12 millimeters through the thickness of the concrete building template that hot pressing obtains.
The production method of the composite concrete building template that present embodiment provides can comprise following concrete steps:
1, saw cut, rotary-cut: China fir is sawn into the China fir juggle by preliminary dimension, and to be peeled into thickness be 2.5 millimeters China fir veneer (i.e. the first rounding veneer) 2;
2, bamboo mat, bamboo curtain splint processing: mao bamboon is blocked, cuts open bamboo, removes joint, goes green grass or young crops to remove Huang, cuts open the thin bamboo strip and be processed into bamboo mat 1 and bamboo curtain splint 3, and thickness is 1.1 millimeters;
3, drying: utilize drying equipment that China fir veneer 2, bamboo mat 1 and bamboo curtain splint 3 are carried out drying, make its moisture content about 8-10%;
4, shear: will be processed into preliminary dimension through China fir veneer 2, bamboo mat 1 and the bamboo curtain splint 3 of super-dry;
5, impregnation, gluing: add the flour of 8% (is benchmark with glue weight) and stir evenly in phenolic resins glue, then China fir veneer 2 is carried out double spread, glue-spread is 380g/m
2
6, assembly: China fir veneer 2, bamboo mat 1 and bamboo curtain splint 3 be staggered obtains slab, and the top layer of slab is a bamboo mat 1, and inferior top layer is the China fir veneer 2 of gluing, and middle five layers be two-layer China fir veneer 2 and three layers of bamboo curtain splint 3 of setting at interval;
7, precompressed: at room temperature slab is carried out precompressed, preload pressure is 0.8MPa, and the time is 20 minutes;
8, display: will display about 120 minutes through the slab of precompressed;
9, hot pressing: under 135 ℃ temperature, the slab that passes through precompressed and display is carried out two-part hot pressing in proper order, first section hot pressing condition is: hot pressing pressure 2.5MPa, exert pressure 20 minutes duration; Second section hot pressing condition is: hot pressing pressure 0.3MPa, exert pressure 3 minutes duration;
10, cutting edge: after the cooling of the slab after the hot pressing, according to the preliminary dimension cutting edge;
11, sanding, grade: will cut out the limit the glued board sanding, grade.
Service check:
The density of the bamboo China fir composite concrete building template that present embodiment provides is 0.70g/cm
3, its performance is considerably beyond the requirement of GB/T17656-1999, and its specific performance assay is as shown in table 1.
The service check data of the bamboo China fir composite concrete building template of table 1, present embodiment
| GB/T17656-1999 | Bamboo China fir composite concrete building template | |
| Moisture content | 6.0-14.0％ | 8.0％ |
| Modulus of elasticity parellel to grain | 5500MPa | 7500MPa |
| Tangential elastic module | 3500MPa | 4100MPa |
| The rift grain MOR | 26MPa | 65MPa |
| The band MOR | 20MPa | 47MPa |
As shown in Figure 1, this concrete building template (is the bamboo wood composite veneer, also can be described as bamboo poplar composite concrete building template) comprise nine layers, the top layer of its slab is the bamboo mat 1 of 1.1 millimeters thick, inferior top layer is the board using poplar board (the first rounding veneer) 2 of 2.5 millimeters thick, the bamboo curtain splint 3 that middle five layers (sandwich layers) are 1.1 millimeters thick and the board using poplar board 2 of 2.5 millimeters thick, the material of each layer as can be seen just from the cross section; This slab is 12 millimeters through the thickness of the glued board that hot pressing obtains.
The production method of the composite concrete building template that present embodiment provides can comprise following concrete steps:
1, saw cut, rotary-cut: poplar is sawn into the poplar juggle by preliminary dimension, and to be peeled into thickness be 2.5 millimeters board using poplar board (the first rounding veneer) 2;
2, bamboo mat, bamboo curtain splint processing: mao bamboon is blocked, cuts open bamboo, removes joint, goes green grass or young crops to remove Huang, cuts open the thin bamboo strip and be processed into bamboo mat 1 and bamboo curtain splint 3, and thickness is 1.1 millimeters;
3, drying: utilize drying equipment that board using poplar board 2, bamboo mat 1 and bamboo curtain splint 3 are carried out drying, make its moisture content about 8-10%;
4, shear: board using poplar board 2, bamboo mat 1 and bamboo curtain splint 3 are processed into preliminary dimension;
5, impregnation, gluing: add the flour of 8% (is benchmark with glue weight) and stir evenly in phenolic resins glue, then board using poplar board 2 is carried out double spread, glue-spread is 380g/m
2
6, assembly: board using poplar board 2, bamboo mat 1 and bamboo curtain splint 3 be staggered obtains slab, and the top layer of slab is a bamboo mat 1, and inferior top layer is the board using poplar board 2 of gluing, and middle five layers be two-layer board using poplar board 2 and three layers of bamboo curtain splint 3 of setting at interval;
7, precompressed: at room temperature slab is carried out precompressed, preload pressure is 0.8MPa, and the time is 20 minutes;
8, display: will display about 120 minutes through the slab of precompressed;
9, hot pressing: under 145 ℃ temperature, the slab that passes through precompressed and display is carried out two-part hot pressing in proper order, first section hot pressing condition is: hot pressing pressure 2.5MPa, exert pressure 20 minutes duration; Second section hot pressing condition is: hot pressing pressure 0.3MPa, exert pressure 3 minutes duration;
10, cutting edge: after the cooling of the slab after the hot pressing, according to the preliminary dimension cutting edge;
11, sanding, grade: will cut out the limit the glued board sanding, grade.
Service check:
The density of the bamboo poplar composite concrete building template that present embodiment provides is 0.70g/cm
3, its performance is considerably beyond the requirement of GB/T17656-1999, and its specific performance assay is as shown in table 2.
The service check data of the bamboo poplar composite concrete building template of table 2, present embodiment
| GB/T17656-1999 | Bamboo poplar composite concrete building template | |
| Moisture content | 6.0-14.0％ | 8.0％ |
| Modulus of elasticity parellel to grain | 5500MPa | 6500MPa |
| Tangential elastic module | 3500MPa | 3800MPa |
| The rift grain MOR | 26MPa | 60MPa |
| The band MOR | 20MPa | 38MPa |
As shown in Figure 2, this concrete building template (is the bamboo wood composite veneer, also can be described as bamboo China fir composite concrete building template) comprise seven layers, the top layer of its slab is the China fir veneer (the second rounding veneer) 4 of 1.5 millimeters thick, inferior top layer is the China fir veneer (the first rounding veneer) 2 of 2.5 millimeters thick, the bamboo curtain splint 3 that middle three layers (sandwich layers) are two-layer 4.3 millimeters thick and the China fir veneer 2 of one deck 2.5 millimeters thick, the material of each layer as can be seen just from the cross section; This slab is 15 millimeters through the thickness of the concrete building template that hot pressing obtains.
The production method of the composite concrete building template that present embodiment provides can comprise following concrete steps:
1, saw cut, rotary-cut: China fir is sawn into the China fir juggle by preliminary dimension, and is peeled into the China fir veneer (i.e. the first rounding veneer) 2 that thickness is 1.5 millimeters 4 and 2.5 millimeters of China fir veneers (i.e. the second rounding veneer);
2, bamboo curtain splint processing: mao bamboon is blocked, cuts open bamboo, removes joint, goes green grass or young crops to remove Huang, cuts open the thin bamboo strip and be processed into bamboo curtain splint 3, and thickness is 4.3 millimeters;
3, drying: utilize drying equipment that China fir veneer 2,4 and bamboo curtain splint 3 are carried out drying, make its moisture content about 8-10%;
4, shear: will be processed into preliminary dimension through the China fir veneer 2,4 and the bamboo curtain splint 3 of super-dry;
5, impregnation, gluing: add the flour of 8% (is benchmark with glue weight) and stir evenly in phenolic resins glue, the China fir veneer 2 to 2.5 millimeters thick carries out double spread then, and glue-spread is 400g/m
2
6, assembly: China fir veneer and bamboo curtain splint be staggered obtains slab, and the top layer of slab is the China fir veneer 4 of 1.5 millimeters thick, and inferior top layer is the China fir veneer 2 of gluing, and middle three layers be two-layer bamboo curtain splint 3 and one deck China fir veneer 2 of setting at interval;
7, precompressed: at room temperature slab is carried out precompressed, preload pressure is 0.8MPa, and the time is 20 minutes;
8, display: will display about 120 minutes through the slab of precompressed;
9, hot pressing: under 145 ℃ temperature, the slab that passes through precompressed and display is carried out two-part hot pressing in proper order, first section hot pressing condition is: hot pressing pressure 2.0MPa, exert pressure 24 minutes duration; Second section hot pressing condition is: hot pressing pressure 0.3MPa, exert pressure 3 minutes duration;
10, cutting edge: after the cooling of the slab after the hot pressing, according to the preliminary dimension cutting edge;
11, sanding, grade: will cut out the limit the glued board sanding, grade.
Service check:
The density of the bamboo China fir composite concrete building template that present embodiment provides is 0.65g/cm
3, its performance is considerably beyond the requirement of GB/T17656-1999, and its specific performance assay is as shown in table 3.
The service check data of the bamboo China fir composite concrete building template of table 3, present embodiment
| GB/T17656-1999 | Bamboo China fir composite concrete building template | |
| Moisture content | 6.0-14.0％ | 8.0％ |
| Modulus of elasticity parellel to grain | 5500MPa | 7000MPa |
| Tangential elastic module | 3500MPa | 4000MPa |
| The rift grain MOR | 26MPa | 60MPa |
| The band MOR | 20MPa | 45MPa |
Claims (15)
1, a kind of bamboo wood composite veneer, its have by the first rounding veneer and bamboo curtain splint at interval assembly, by the body that hot pressing is made, this body is an odd-level, and the described first rounding veneer is positioned at the surface of body.
2, bamboo wood composite veneer as claimed in claim 1, wherein, two surfaces of described body are compounded with one deck bamboo mat respectively, form the top layer of bamboo wood composite veneer.
3, bamboo wood composite veneer as claimed in claim 1, wherein, two surfaces of described body are compounded with one deck second rounding veneer respectively, form the top layer of bamboo wood composite veneer.
4, as claim 2 or 3 described bamboo wood composite veneers, wherein, be covered with impregnated paper on the top layer of this bamboo wood composite veneer.
5, bamboo wood composite veneer as claimed in claim 1, wherein, described log comprises one or more in quick growth poplar wood, masson pine, larch, China fir and the Eucalyptus.
6, bamboo wood composite veneer as claimed in claim 1, wherein, the thickness of the described first rounding veneer is the 1.5-8.0 millimeter.
7, bamboo wood composite veneer as claimed in claim 1, wherein, the thickness of described bamboo curtain splint is the 1.0-4.5 millimeter.
8, bamboo wood composite veneer as claimed in claim 2, wherein, the thickness of described bamboo mat is the 0.5-2.5 millimeter.
9, bamboo wood composite veneer as claimed in claim 1, wherein, the thickness of this bamboo wood composite veneer is the 9-28 millimeter.
10, bamboo wood composite veneer as claimed in claim 1, wherein, this bamboo wood composite veneer is the 3-21 layer.
11, the manufacture method of the described bamboo wood composite veneer of claim 1, it may further comprise the steps:
Is that 1.5-8.0 millimeter, moisture content are that the first rounding veneer of 6%-12% and thickness are that 1.0-4.5 millimeter, moisture content are that the bamboo curtain splint of 6%-12% is provided with at interval by odd-level assembly method with thickness, obtain slab through gluing and assembly, and coated face is the cemented surface of the first rounding veneer;
At room temperature slab is carried out precompressed;
The slab of finishing precompressed is displayed processing;
The slab that passes through precompressed and display is carried out hot pressing.
12, manufacture method as claimed in claim 11, wherein, this method also comprises:
On two surfaces of slab the bamboo mat or the second rounding veneer are set;
And, in the assembly process, the first rounding veneer is carried out double spread.
13, as claim 11 or 12 described manufacture methods, wherein, this method also comprises:
Paste impregnated paper on the top layer of the bamboo wood composite veneer that hot pressing is obtained.
14, manufacture method as claimed in claim 11, wherein, when carrying out gluing, glue-spread is 260-400g/m
2
15, manufacture method as claimed in claim 11, wherein, describedly be meant: under 125 ℃-155 ℃ temperature carrying out hot pressing through precompressed and the slab displayed, the slab that passes through precompressed and display is carried out two-part hot pressing in proper order, first section hot pressing condition is: hot pressing pressure 1.2-4.0MPa, the duration 1.0-2.0min/mm that exerts pressure is a benchmark with the thickness without the slab of precompressed; Second section hot pressing condition is: hot pressing pressure 0.3-0.6MPa, time 1-3 minute.
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| CNA2008101190008A CN101486208A (en) | 2008-08-28 | 2008-08-28 | Bamboo wood composite plywood for concrete form panel and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008101190008A CN101486208A (en) | 2008-08-28 | 2008-08-28 | Bamboo wood composite plywood for concrete form panel and manufacturing method thereof |
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| CN101486208A true CN101486208A (en) | 2009-07-22 |
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| CN102441929A (en) * | 2010-10-15 | 2012-05-09 | 赵星 | Manufacturing method for bamboo-wood compound concrete template |
| CN102561885A (en) * | 2012-03-02 | 2012-07-11 | 重庆沛霖新型建材有限公司 | Bamboo mat plywood and plastic- bamboo door window |
| CN102990729A (en) * | 2012-12-20 | 2013-03-27 | 南宁铁路局房产管理所 | Manufacture method of high-strength and clear-water full-eucalyptus film-sticking arc-shaped gluing building template |
| CN104084995A (en) * | 2014-07-09 | 2014-10-08 | 湖南长笛龙吟竹业有限公司 | Bamboo and wood composite material |
| CN104416642A (en) * | 2013-09-03 | 2015-03-18 | 湖南旺正新材料有限公司 | Artificial board manufactured by taking waste building templates as raw material and manufacturing method thereof |
| CN105196368A (en) * | 2015-08-28 | 2015-12-30 | 国家***竹子研究开发中心 | Manufacturing method of bamboo-wood composite laminated timber |
| CN106426426A (en) * | 2016-08-02 | 2017-02-22 | 浙江长兴森大竹木制品有限公司 | Manufacturing process of bamboo-wood composite concrete formwork |
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| CN102441929A (en) * | 2010-10-15 | 2012-05-09 | 赵星 | Manufacturing method for bamboo-wood compound concrete template |
| CN102561885A (en) * | 2012-03-02 | 2012-07-11 | 重庆沛霖新型建材有限公司 | Bamboo mat plywood and plastic- bamboo door window |
| CN102990729A (en) * | 2012-12-20 | 2013-03-27 | 南宁铁路局房产管理所 | Manufacture method of high-strength and clear-water full-eucalyptus film-sticking arc-shaped gluing building template |
| CN104416642A (en) * | 2013-09-03 | 2015-03-18 | 湖南旺正新材料有限公司 | Artificial board manufactured by taking waste building templates as raw material and manufacturing method thereof |
| CN104084995B (en) * | 2014-07-09 | 2016-07-13 | 湖南长笛龙吟竹业有限公司 | A kind of bamboo-wood composite material |
| CN104084995A (en) * | 2014-07-09 | 2014-10-08 | 湖南长笛龙吟竹业有限公司 | Bamboo and wood composite material |
| CN105196368A (en) * | 2015-08-28 | 2015-12-30 | 国家***竹子研究开发中心 | Manufacturing method of bamboo-wood composite laminated timber |
| CN106426426A (en) * | 2016-08-02 | 2017-02-22 | 浙江长兴森大竹木制品有限公司 | Manufacturing process of bamboo-wood composite concrete formwork |
| CN106917326A (en) * | 2017-02-27 | 2017-07-04 | 四川农业大学 | A kind of fire-retardant cizu Cryptomeria composite plate manufacture method |
| CN106976135A (en) * | 2017-03-28 | 2017-07-25 | 德华兔宝宝装饰新材股份有限公司 | The method that odd-even symmetry assembly prepares high stability solid wooden compound floor |
| CN108943199A (en) * | 2017-05-19 | 2018-12-07 | 湖南中集竹木业发展有限公司 | A kind of bamboo and wood composite bottom board and preparation method thereof |
| CN108381691A (en) * | 2018-04-09 | 2018-08-10 | 邓州市新艺木业有限责任公司 | A kind of fire-retardant bamboo sheet plywood and preparation method thereof |
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