CN201511420U

CN201511420U - Bamboo wood composite board

Info

Publication number: CN201511420U
Application number: CN2009202201264U
Authority: CN
Inventors: 胡新华
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-10-26
Filing date: 2009-10-26
Publication date: 2010-06-23
Anticipated expiration: 2019-10-26

Abstract

The utility model discloses a bamboo-wood monolithic composite board, which comprises an upper layer board, a lower layer board and an intermediate core layer. The intermediate core layer is composed of at least 11 layers of vertical veneer veneers. The place is an overlapping structure; each layer of longitudinal thin wood veneers in the middle core layer is glued or dipped, and then stacked in sequence and placed between the upper layer board and the lower layer board, the upper layer board, the middle core layer and the lower layer board Combined into one after heat pressing. It solves the problem that the strength of the existing bamboo-wood composite boards is affected by adopting a butt joint structure in the board layers. The bamboo-wood composite board of the utility model is especially suitable for the compartment floor of trucks and flatbed trucks and the bottom plate of containers, and has the advantages of low cost, high strength, low density and the like.

Description

Bamboo wood monolithic composite plate

Technical field

The utility model relates to a kind of bamboo wood monolithic composite plate, particularly relates to the bamboo wood monolithic composite plate of a kind of base plate that is used for truck, flat car compartment and container, brick plate, trailer floor.

Background technology

Laminated bamboo-wood composite lumber the utility model belongs to the wood-based plate manufacturing technology in the timber industry.The present employed flat car of railway transportation, owing to must guarantee that base plate has high as far as possible intensity, absorbing, resistance to shock, worsening shortages along with the forest reserves in the world wide, timber, especially the price of the big footpath of high-quality level timber also goes up thereupon, manufacturing cost is more and more higher, and it is also fewer and feweri to originate.More and more floor compartment that adopt bamboo-wood plyboard to do lorry, flat car, for example:

ZL962315001 discloses a kind of laminated bamboo-wood composite lumber, is to be surface material with the bamboo wood, is the intermediate core layer material with thinnings of masson pine or other small diameter grade seeds or the veneer that brush wood is processed into.Two-layer panel (bamboo chip) and multilayer central layer (veneer) are arranged assembly by same machine direction (vertically) basically; Between bamboo chip and veneer, veneer and veneer, add the wooden rotary-cut thin veneer of a double spread again, under certain pressure and temperature, can compose the laminated bamboo-wood composite lumber of desired properties.

ZL98227629X discloses a kind of laminated bamboo-wood composite lumber that is used for compartment, container bottom board, and the bamboo curtain splint or the bamboo mat that are made into common bamboo chip, bamboo strip knitting are surface material, are the intermediate core layer material with plywood or veneer.

ZL02263794X discloses a kind of passenger car base plate bamboo wood composite veneer, and its skin-material adopts bamboo mat, and the intermediate core layer material adopts board using poplar board.

It is the container bottom board that primary raw material is made with bamboo wood and fast growing wood that ZL031528414 discloses a kind of, its surface layer adopts the high-density bamboo material thin plate, the intermediate core layer material adopts wood single-plate and wooden flake board, or wood single-plate and bamboo curtain splint, or wood single-plate, adopting repeatedly heat pressing process compound is finished product.

Above bamboo-wood plyboard, though with other platform floors made from bamboo wood merely, compare as thin bamboo strips used for weaving glued board, bamboo plywood and bamboo mat plywood, physical and mechanical property can meet the demands, density obviously reduces; With pure wooden platform floor, can save timber resources, its upper and lower surface layer is bamboo clappers, improved the abrasion resistance of sheet material, but in or, vertically veneer veneer 21 usefulness solid contents are that 30% phenolic resin glue soaks taking-up in 20 minutes and drains, and are dried to＜12%.

The plank two both ends butt joint of being processed into forms, can influence the bending strength of the composite board that processes like this, therefore, searching is a kind of can improve timber intensity can satisfy again becomes those skilled in the art's pursuit as the bamboo-wood plyboard of lorry, the specification requirement of flat car platform floor target.

Summary of the invention

The purpose of this utility model is to solve the low problem of bending resistance, shear strength of existing bamboo-wood composite board.

The technical solution of the utility model is:

A kind of bamboo wood monolithic composite plate comprises top plate, lower plywood and intermediate core layer, it is characterized in that:

This intermediate core layer constitutes by at least 11 layers of vertical veneer veneer is stacked, longitudinal seam place with the vertical veneer veneer of one deck is that overlap joint 4. usefulness quick-make press are 130～135 ℃ of temperature, under the pressure 3.0mpa, above-mentioned top plate 10, intermediate core layer 20 and lower plywood 30 are carried out the hot pressing second time to needs thickness, thereby form bamboo-wood plyboard of the present utility model.

Above-mentioned bamboo wood monolithic composite plate is tested by Ministry of Railways's standard, and testing result is as follows:

013]As preferably, this top plate comprises the horizontal bamboo curtain splint of one deck bamboo mat, one deck, another layer bamboo mat and at least six layers of vertical bamboo curtain splint that stack gradually from top to bottom, is hot pressed into one behind described one deck bamboo mat, the horizontal bamboo curtain splint of one deck, another layer bamboo mat and at least six layers of vertical bamboo curtain splint impregnation.

As preferably, symmetrical about the structure of this lower plywood and the structure of this top plate are.

As preferably, the outer surface of described top plate and lower plywood posts the multiple film paper of one deck respectively.

As preferably, the coincidence length of the vertical veneer veneer of described each layer overlapping the slot longitudinally is 3～5mm.

As preferably, the overlapping the slot longitudinally of the vertical veneer veneer of described each layer is not all on an identical vertical plane.

As preferably, the vertical veneer veneer of each layer overlapping the slot≤1 longitudinally/m.

The utility model has the following advantages owing to the technique scheme that adopts:

1, reasonably selects the veneer number of plies, and the seam of plank is adopted bridging arrangement, the technical problem of the undercapacity that has solved existing plank butt joint effectively and brought, particularly, the choose reasonable of the length of coincidence place of lap side seam, whip stitch staggers each other, and no more than 1 of the whip stitch in every meter length, so both can guarantee the flatness of sheet material and can improve bending resistance, the shearing strength of sheet material.

2, because vertical bonding strength of bamboo curtain splint is good, the bonding strength of intersecting in length and breadth is relatively poor, and therefore, the bamboo mat that uses chi structure in length and breadth is at interval between horizontal bamboo curtain splint and vertical bamboo curtain splint, not only improve upper epidermis transverse modulus of elasticity and compression strength, can also play the effect that is difficult for layering.

Specify the technical solution of the utility model below in conjunction with accompanying drawing.

Description of drawings

Fig. 1 is the sectional view of the embodiment 1 of bamboo wood monolithic composite board of the present utility model;

Fig. 2 is the sectional view of the embodiment 2 of bamboo wood monolithic composite board of the present utility model.

The specific embodiment

Referring to Fig. 1, showed the cross section of the bamboo wood monolithic composite plate of utility model among the figure, it comprises top plate 10, lower plywood 30 and intermediate core layer 20, wherein:

Top plate 10 comprises the horizontal bamboo curtain splint 13 of one deck bamboo mat 12, one deck of stacking gradually from top to bottom, another layer bamboo mat 14 and at least six layers of vertical bamboo curtain splint 15, is hot pressed into one behind described one deck bamboo mat 12, the horizontal bamboo curtain splint 13 of one deck, another layer bamboo mat 14 and at least six layers of vertical bamboo curtain splint 15 impregnation.Wherein, each layer be bamboo curtain splint 15 thick 1～1.2 millimeter vertically, is example with six layers of vertical bamboo curtain splint 15, and the thickness of the top plate 10 after hot pressing is about 0.6 centimetre.Because vertical bonding strength of bamboo curtain splint is good, the bonding strength of intersecting in length and breadth is relatively poor, and therefore, the

bamboo mat

12,14 that uses chi structure in length and breadth is at interval between horizontal bamboo curtain splint and vertical bamboo curtain splint 15, not only improve upper epidermis transverse modulus of elasticity and compression strength, can also play the effect that is difficult for layering.In addition, in order to improve the beautiful decoration of top plate 10, and the surface of avoiding top plate 10 is subjected to external force scratch breakage, can also glued joint the multiple film paper 11 of one deck at the upper surface of upper strata bamboo mat 12, and this layer is answered film paper 11 and can be combined as a whole by above-mentioned heat-press step and this upper strata bamboo mat 12.

The structure of the structure of lower plywood 30 and top plate 10 is symmetry up and down, comprise: the multiple film paper 31 of one deck, one deck bamboo mat 32, the horizontal bamboo curtain splint 33 of one deck, another layer bamboo mat 34 and at least six layers of vertical bamboo curtain splint 35, other structure has just repeated no more, and consults Fig. 1 and can understand.

Intermediate core layer 20 is made of at least 11 layers of vertical veneer veneer 21, is bridging arrangement 22 with the longitudinal seam place of the vertical veneer veneer 21 of one deck.Wherein: described vertical veneer veneer 21, be meant its fiber growth direction for vertically, identical with the bamboo fibre direction of growth of vertical bamboo curtain splint 15.Referring to Fig. 1, the coincidence length of the longitudinal lap joint of the vertical veneer veneer 21 of each layer seam is 3～5mm; The overlapping the slot of the vertical veneer veneer 21 of described each layer is not all on same vertical plane.Can improve the intensity of intermediate core layer 20 like this, also can guarantee the flatness of intermediate core layer 20.In order further to improve the intensity of composite plate, the overlapping the slot longitudinally of the vertical veneer veneer 21 of each layer should be less than 1/m.

Behind vertical veneer veneer 21 gluing of each layer in the intermediate core layer 20 or the impregnation, stack gradually and be placed between described top plate 10 and the lower plywood 30,, form the bamboo-wood plyboard structure through being combined as a whole after the hot pressing for the second time.

Bamboo wood monolithic composite plate of the present utility model is to adopt following method to make:

1.a. the mao bamboon machining is become thin bamboo plate, be woven into thick 1～1.2 millimeter bamboo mat and bamboo curtain splint, be dried to moisture content＜8% then, immersed again in the phenolic resins 15～20 minutes, take out and carry out drying processing after draining, make moisture content＜12%.The dried bamboo mat of impregnation and bamboo curtain splint are hot pressed into the multiple film bamboo offset plate of high density single face (answers the vertical bamboo curtain splint of film paper 11 (31), one deck bamboo mat 12 (32), the horizontal bamboo curtain splint 13 (33) of one deck, another layer bamboo mat 14 (34) and at least six layers 15 (35) with one and carries out the hot pressing first time after stacked in regular turn, temperature 135 ℃ ± 5, pressure 4.5mpa is incubated 5～7 minutes).Again with the bamboo curtain splint facing sand light of the multiple film bamboo offset plate of single face, becoming thickness, to be about 0.6 centimetre top plate 10 and lower plywood 30 standby.

1.b. the timber that the diameter of a cross-section of a tree trunk 1.3 meters above the ground is thin, for example: it is thick that the tangible trees of fiber such as pine, birch, Eucalyptus, poplar are processed into 1.8～2.2mm, and length is greater than vertical veneer veneer 21 of 0.6m materials for later use as intermediate core layer 20.

2. the high density single face is answered film bamboo offset plate (comprising top plate 10 and lower plywood 30) and vertical veneer veneer 21, whole single spreadings, glue-spread is 350g/m ²± 10g, solid content is＞43%, depositing is dry behind the gluing, makes moisture＜12%.

Perhaps, vertically veneer veneer 21 usefulness solid contents are that 30% phenolic resin glue soaks taking-up in 20 minutes and drains, be dried to＜12%.

3.a. at least 11 layers of vertical veneer veneer 21 are stacked gradually, form described intermediate core layer 20.Wherein, overlapped with the seam crossing of vertical veneer veneer 21 of one deck, the length of the intersection of lap-joint is 3～5mm, and the seam crossing of these at least 11 layers of veneers is in respectively on the different vertical planes, promptly staggers mutually.In order to ensure the intensity of bamboo-wood plyboard, the overlapping the slot longitudinally of the vertical veneer veneer 21 of each layer should be less than 1/m.

3.b. with top plate 10, intermediate core layer 20 and lower plywood 30 stacked arrangement from top to bottom.Wherein: this top plate 10 has one of multiple film paper and faces up, and faces down and lower plywood 30 has one of multiple film paper.

4. use the quick-make press 130～135 ℃ of temperature, under the pressure 3.0mpa, above-mentioned top plate 10, intermediate core layer 20 and lower plywood 30 are carried out the hot pressing second time to needs thickness, thereby form bamboo-wood plyboard of the present utility model.

Figure DEST_PATH_GA20181593200920220126401D00021

By above-mentioned testing result as can be known, bamboo of the present utility model wood monolithic composite plate has that density is low, moisture content is low, MOR is high, the compression strength advantages of higher, the elastic modelling quantity of bamboo-wood plyboard of the present utility model is the twice of standard, and its good weatherability, I class dipping stripping performance is low.

Embodiment 2, referring to Fig. 2, with a last embodiment difference be: this bamboo wood monolithic composite plate has been cancelled surperficial decorative paper layer, central core is 13 layers of vertical veneer veneer 21, its processing technology is identical with top embodiment, certainly, the bamboo and wood plate can adopt the mode of gluing or impregnation to carry out hot-forming again.

Claims

1. a bamboo wood monolithic composite plate comprises top plate, lower plywood and intermediate core layer, it is characterized in that:

This intermediate core layer constitutes by at least 11 layers of vertical veneer veneer is stacked, is bridging arrangement with the longitudinal seam place of the vertical veneer veneer of one deck;

Behind vertical veneer veneer gluing of each layer in this intermediate core layer or the impregnation, stack gradually and be placed between described top plate and the lower plywood, this top plate, intermediate core layer and lower plywood are combined as a whole through after the hot pressing.

2. bamboo wood monolithic composite plate according to claim 1, it is characterized in that: this top plate comprises the horizontal bamboo curtain splint of one deck bamboo mat, one deck, another layer bamboo mat and at least six layers of vertical bamboo curtain splint that stack gradually from top to bottom, is hot pressed into one behind described one deck bamboo mat, the horizontal bamboo curtain splint of one deck, another layer bamboo mat and at least six layers of vertical bamboo curtain splint impregnation.

3. bamboo wood monolithic composite plate according to claim 2, it is characterized in that: the structure of this lower plywood and the structure of this top plate are symmetry up and down.

4. bamboo wood monolithic composite plate according to claim 3, it is characterized in that: the outer surface of described top plate and lower plywood posts the multiple film paper of one deck respectively.

5. bamboo wood monolithic composite plate according to claim 1, it is characterized in that: the coincidence length of the vertical veneer veneer of described each layer overlapping the slot longitudinally is 3～5mm.

6. bamboo wood monolithic composite plate according to claim 1 or 5, it is characterized in that: the overlapping the slot longitudinally of the vertical veneer veneer of described each layer is not all on an identical vertical plane.

7. bamboo wood monolithic composite plate according to claim 1 or 5 is characterized in that: the vertical veneer veneer of each layer overlapping the slot≤1 longitudinally/m.

8. bamboo according to claim 6 wood monolithic composite plate is characterized in that: the vertical veneer veneer of described one deck overlapping the slot≤1 longitudinally/m.