Background technology
The continuous aggravation in short supply of the present global forest reserves, particularly high-quality timber resources constantly minimizings such as the higher clone of intensity wood and hardwood, the cost of raw material of container bottom board is also in continuous rising, and the utilization that has had increasing people that sight is transferred to bamboo timber resource in the container bottom board industry comes up.Along with continuous exploration and the research of people to the bamboo wood characteristic, in recent years, the bamboo wood composite more and more is subjected to the concern of numerous personages in the industry.
Bamboo wood has vertical tension and the high characteristics of bending strength, by using the bamboo wood composite, can be good at increasing the intensity of container bottom board, but, certainly exist bigger slit between the bamboo chip simultaneously because bamboo wood need be made bamboo bamboo chip when using conspires to create bamboo curtain splint and use.In the production process of container bottom board, in order to bring into play the high characteristics of bamboo wood bending strength, producer's custom is put near the container bottom board surface bamboo wood so that better bring into play the resistance to tension of bamboo curtain splint, guarantee the intensity of container bottom board, but because the radian that slit between bamboo curtain splint and bamboo chip self exist, cause bad phenomenon such as container bottom board surface irregularity easily, panel is saturating by sand easily when carrying out sanding, and in use panel surface is prone to defectives such as cracking, this not only has a strong impact on the outward appearance of container bottom board, also causes the instability of container bottom board self intensity.Also there is the researcher bamboo curtain splint veneer to be put in the mid portion of container bottom board, though eliminated the superficial defects that bring in the slit between bamboo chip like this, but fail to get hold of the gummed characteristic of bamboo, make that the gummed between the bamboo wood is relatively poor relatively, the sandwich layer position is sheared destruction easily, unstable properties in actual production and use.
At present, some patents relevant with bamboo wood composite container baseboard are disclosed in the patent gazette, but these patents more are conceived to how to utilize the angle of bamboo matter resource, all fail from eliminate in essence defective that the bamboo wood characteristic brings, better bring into play the bamboo wood self performance, stablize the performance of bamboo wood composite container baseboard.
Summary of the invention
The present invention is intended to overcome the deficiencies in the prior art, a kind of composite board for bottom board of container of composite bamboo-timber structure is provided, utilize bamboo matter resource to alleviate the problem of forest reserves anxiety, structure to bamboo wood composite container baseboard reasonably designs, the defective of the container bottom board surface irregularity that elimination bamboo wood characteristic is brought, better bring into play the strong characteristics of bamboo wood bending resistance, satisfy the requirement of strength of container bottom board simultaneously.
For achieving the above object, the present invention by the following technical solutions:
A kind of composite board for bottom board of container is provided, form by the hot-press gluing of multilayer veneer, it comprises upper layer, following surface layer and intermediate layer, described veneer comprises veneer and bamboo veneer, described upper layer and described down surface layer ecto-entad are followed successively by continuous 3 layers of rift grain veneer, 1 layer of band veneer, 1-2 layer rift grain bamboo curtain splint veneer, described intermediate layer is made up of rift grain veneer and face crossing, and this intermediate layer comprises and haves three layers or the rift grain veneer of continuous stratification more than 3 layers.
In the present invention, described intermediate layer and described upper layer, the described adjacent veneer of surface layer down are face crossing.
In the present invention, the seeds of making described veneer in clone, Marasse, leatherleaf Pometia spp, birch, beech, peach blossom core, red Lan Ren, poplar, eucalyptus, pine, pinus caribaea, larch, fish-scale floss, wet-land pine tree, masson pine, pine, dragon spruce, the fir any one or more than one.
In the present invention, the described upper layer and/or the veneer of outermost layer veneer for crossing of surface layer down through the resin impregnation process.
In the present invention, the outermost layer veneer top finishing of described upper layer and/or described down surface layer has one deck functional resin or posts at least one deck Tetefol or post one deck resin immersion non-woven fabrics at least.
In the present invention, described covering with paint functional resin layer or Tetefol layer or resin immersion non-woven fabrics layer are provided with wood grain or asperities embossment.
In the present invention, described veneer is gone out to meet the specification of instructions for use or is adopted the less veneer of specification to be spliced into desired specification in identical grain direction by the direct rotary-cut of log.
In the present invention, the method for the less veneer of splicing specification comprises splicing, finger, butt joint.
Compared with prior art, beneficial effect of the present invention is:
1, composite board for bottom board of container of the present invention, reduce the demand of container bottom board by the compound characteristic of bamboo material of utilizing of bamboo wood to high-quality timber, it is in short supply to the raw-material impact of container bottom board to alleviate world forest resources, reduces the production cost of container bottom board;
2, pass through reasonable structural design, bamboo wood is positioned over comparatively reasonably position, can bring into play the anti-bending strength of bamboo wood preferably, the also blemish during the uneven and sanding of the plate surface that can avoid the bamboo curtain splint slit to cause, improve the intensity of container bottom board, guaranteed the quality of container bottom board.
The specific embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments:
In the present invention, face crossing comprises band veneer and band bamboo curtain splint veneer, and the type of bamboo veneer comprises bamboo curtain splint veneer and bamboo mat veneer etc., and that uses among the present invention is the bamboo curtain splint veneer.So-called face crossing is meant that when veneer carries out assembly the grain direction of veneer parallels with the horizontal A of chassis of container; The rift grain veneer comprises rift grain veneer and rift grain bamboo curtain splint veneer, and so-called rift grain veneer is meant that when veneer carries out assembly horizontal A is perpendicular for the grain direction of veneer and chassis of container.
Embodiment one:
Be illustrated in figure 1 as a kind of structural representation of the embodiment of the invention one, glued board is made up of 21 layers of veneer.This glued board structurally comprise upper layer 11, down surface layer 13 and be clipped in upper layer and following surface layer between intermediate layer 12.Upper layer 11 ecto-entads are followed successively by 114,2 impregnation rift grains of 1 rift grain clone's veneer 112,113,1 band beech veneer of 111,2 rift grain Marasses veneer bamboo curtain splint veneer 115,116; The intermediate layer is made up of pines such as pine, pinus caribaea, larch or eucalyptus or the two mixing, is followed successively by 1 band veneer 121, rift grain veneer 122, band veneer 123, continuous 3 rift grain veneers 124,125,126, band veneer 127, rift grain veneer 128, band veneer 129 from top to bottom; Following surface layer ecto-entad is followed successively by 134,2 impregnation rift grains of 1 rift grain clone's veneer 132,133,1 band beech veneer of 131,2 rift grain Marasses veneer bamboo curtain splint veneer 135,136.When producing this glued board, respectively rift grain Marasse veneer 112, band beech veneer 114, band veneer 121, band veneer 123, rift grain veneer 125, band veneer 127, band veneer 129, rift grain Marasse veneer 132 and band beech veneer 134 are carried out double spread, more than each veneer through the hot-press gluing moulding, used in the present embodiment glue is phenolic resin adhesive.
Adopt the composite board for bottom board of container surfacing of the embodiment of the invention, after sanding, polishing, it is uneven and surperficial by the saturating phenomenon of sand backplate surface can not occur, its surface quality is good, after requiring to carry out chamfering, mortise according to chassis of container, be installed on the chassis of container, its intensity can be pressed the case test by the 7260kg dolly of regulation in the industry.
In the present embodiment, cover with paint, lacquer, colour wash, etc. one deck thermosetting resin 1110 at the outer surface of the outermost layer veneer 111 of half upper layer of compression moulding, thermoset resin layer 1110 goes out the wood grain anaglyph through the hot pressing of wood grain steel plate.
In the present embodiment, cover with paint, lacquer, colour wash, etc. one deck thermosetting resin 1110 at the outer surface of the outermost layer veneer 111 of the upper layer of the slab of compression moulding, thermoset resin layer 1110 goes out the wood grain embossment through the hot pressing of wood grain steel plate.
Be illustrated in figure 2 as the another kind of structural representation of the embodiment of the invention one, under the prerequisite that guarantees container bottom board intensity, on the basis of last embodiment, adjust the thickness of each layer veneer, and upper layer and following surface layer are respectively reduced by 1 rift grain bamboo curtain splint veneer, its total number of plies is 19 layers, and wherein 215 and 235 is the rift grain bamboo curtain splint veneer of not impregnation.
Can also be in the present embodiment at 21 layers of veneer applying glue, assembly, cold pressing after, cover with paint, lacquer, colour wash, etc. thermosetting resin in the above on the upper surface of Ceng outermost layer veneer 111 earlier, undertaken once hot-forming by the hot press that wood grain embossment steel plate is housed again.
In order better to improve stock utilization, the veneer that is adopted in the embodiment of the invention can be gone out to meet the specification of instructions for use by the direct rotary-cut of log, also can adopt the less veneer of specification to use methods such as overlap joint, finger, butt joint to be spliced in identical grain direction, employed bamboo curtain splint also can carry out spreading by the mode of overlap joint, the bamboo curtain splint of handling through impregnation during overlap joint can directly overlap mutually, and the bamboo curtain splint through impregnation can not overlap behind the gluing of termination.
Embodiment two:
Be illustrated in figure 3 as the structural representation of the embodiment of the invention two, this glued board is made up of 19 layers of veneer, comprise upper layer 31, down surface layer 33 and be clipped in upper layer and following surface layer between intermediate layer 32 compositions, the upper layer ecto-entad is followed successively by 1 rift grain clone veneer 311,2 rift grain Marasse veneers 312,313,314,2 impregnation rift grains of 1 band beech veneer bamboo curtain splint veneer 315,316; The intermediate layer is made up of pines such as pine, pinus caribaea, larch or eucalyptus or the two mixing, is followed successively by 1 band veneer 321,322,323,324,325,326,1 band veneers 327 of continuous 5 rift grain veneers from top to bottom; Following surface layer ecto-entad is followed successively by 334,2 impregnation rift grains of 1 rift grain clone's veneer 332,333,1 band beech veneer of 331,2 rift grain Marasses veneer bamboo curtain splint veneer 335,336.Respectively the rift grain Marasse veneer 312 in the above-mentioned veneer, band beech veneer 314, band veneer 321, rift grain veneer 323, rift grain veneer 325, band veneer 327, band beech veneer 334, rift grain Marasse veneer 332 are carried out double spread, through hot pressing compression moulding, the glue that is adopted is phenolic resin adhesive in the present embodiment.
Outer surface at the outermost layer veneer 311 of the upper layer of the slab of compression moulding posts the resin impregnating paper 3110 that one deck has Z-Correct bump mapping Z-correct.The outermost layer veneer 311 of upper layer also can be the eucalyptus veneer of handling through resin impregnating, behind the assembly, posts one deck phenolic-resin paper 3110 earlier on outermost layer veneer 311, forms by the hot pressing of hot press that asperities embossment steel plate is housed again.In addition, also can adopt the resin immersion non-woven fabrics to substitute resin impregnating paper, can reach surface aesthetic, easy cleaning, purpose such as wear-resisting, anti-skidding equally.
Glued board in the present embodiment is made up of 19 layers of veneer, continuous 5 layers of rift grain laminated veneer lumber are adopted in the intermediate layer, to guarantee the vertical bending strength and the shear strength of base plate, but be not limited thereto, in an embodiment of the present invention, under the prerequisite that guarantees base plate strength, can also be made into 17,18,20,21,22,23 layers of glued board by the number of plies and thickness adjustment to the intermediate layer veneer.
The veneer seeds of being adopted in an embodiment of the present invention, except adopting clone, Marasse, beech, eucalyptus, pine, pinus caribaea, larch, can also adopt in leatherleaf Pometia spp, birch, peach blossom core, red Lan Ren, poplar, fish-scale floss, wet-land pine tree, masson pine, pine, dragon spruce, the fir any one and more than one.
The above for the person of ordinary skill of the art, can make other various corresponding changes and distortion according to technical scheme of the present invention and technical conceive, and all these changes and distortion all should belong to the protection domain of claim of the present invention.