阅读说明：本技术 一种竹木复合式板芯及其应用的立芯板 (Bamboo-wood composite board core and vertical core board using same ) 是由 彭钦泊 于 2021-09-16 设计创作，主要内容包括：本发明属于人造板材技术领域,公开了一种竹木复合式板芯及其应用的立芯板,其中,竹木复合式板芯由多组板条和多根纵向竹条交替铺装组坯后胶合侧压而成,并且,该板芯的上、下表面还均错位嵌设有多根横向竹条；所述板条由多个芯条粘接拼制而成,每个芯条由多层单板组坯热压后裁切而成,且单板的叠合方向位于芯条的宽度方向上,单板的木纹方向位于芯条的长度方向上。本发明所公开的竹木复合式板芯应用的立芯板包括由上而下相互粘接的上装饰层、上表层、竹木复合式板芯、下表层和下装饰层。本发明横向静曲强度高、抗变形性能优异,并且板材整体平整度好、质感优美,适用于室内装饰、家具制作等领域,特别适用于衣柜、橱柜、门扇等柜门的制作。(The invention belongs to the technical field of artificial boards, and discloses a bamboo-wood composite board core and a vertical core board applied by the same, wherein the bamboo-wood composite board core is formed by alternately paving and assembling a plurality of groups of battens and a plurality of longitudinal bamboo strips, then gluing and laterally pressing the battens, and a plurality of transverse bamboo strips are embedded in the upper surface and the lower surface of the board core in a staggered manner; the batten is formed by splicing a plurality of core strips, each core strip is formed by cutting a multi-layer veneer assembly after hot pressing, the superposition direction of the veneers is positioned in the width direction of the core strip, and the wood grain direction of the veneers is positioned in the length direction of the core strip. The invention discloses a vertical core plate applied to a bamboo-wood composite plate core, which comprises an upper decoration layer, an upper surface layer, the bamboo-wood composite plate core, a lower surface layer and a lower decoration layer which are mutually bonded from top to bottom. The invention has high transverse static bending strength, excellent deformation resistance, good integral flatness and beautiful texture of the plate, is suitable for the fields of interior decoration, furniture manufacture and the like, and is particularly suitable for manufacturing cabinet doors such as wardrobes, cabinets, door leaves and the like.)

1. The utility model provides a bamboo wood combined type board core which characterized in that: the board core is formed by alternately paving a plurality of groups of battens and a plurality of longitudinal bamboo battens to assemble a blank and then gluing and pressing; the width of the longitudinal bamboo strips is larger than the thickness of the longitudinal bamboo strips, the width direction of the longitudinal bamboo strips is consistent with the thickness direction of the board core, and the bamboo grain direction of the longitudinal bamboo strips is consistent with the length direction of the board core;

the batten is formed by splicing a plurality of core strips, each core strip is formed by cutting a multi-layer veneer assembly after hot pressing, the superposition direction of the veneers is positioned in the width direction of the core strip, and the wood grain direction of the veneers is positioned in the length direction of the core strip.

2. The bamboo-wood composite board core of claim 1, characterized in that: the width of the longitudinal bamboo strip is 10-15 mm, the thickness is 3-5 mm, and the length is 2.5-2.8 m.

3. The bamboo-wood composite board core of claim 1 or 2, characterized in that: a plurality of transverse bamboo battens are embedded at the two ends of the upper surface and the lower surface of the board core; the width direction of the transverse bamboo strips is consistent with the thickness direction of the board core, and the transverse bamboo strips in the upper surface of the board core and the transverse bamboo strips in the lower surface of the board core are staggered with each other.

4. The bamboo-wood composite board core of claim 3, characterized in that: the width of the transverse bamboo strip is 6-8 mm, the thickness of the transverse bamboo strip is 4-7 mm, and the length of the transverse bamboo strip is 1.1-1.3 m.

5. The utility model provides a vertical core board that bamboo wood combined type board core was used which characterized in that: the bamboo-wood composite board core comprises an upper decorative layer, an upper surface layer, a board core, a lower surface layer and a lower decorative layer which are mutually bonded from top to bottom, wherein the board core adopts the bamboo-wood composite board core as claimed in any one of claims 1 to 4.

6. The vertical core plate applied to the bamboo-wood composite plate core as claimed in claim 5, wherein: the upper surface layer and the lower surface layer are single-layer veneers with the thickness of 3.0 mm; or the upper surface layer and the lower surface layer are both single plates with the thickness of 1.7 mm.

7. The vertical core plate applied to the bamboo-wood composite plate core as claimed in claim 5 or 6, wherein: the upper decoration layer and the lower decoration layer are of any one of the following structures: a. the surface is coated with a solid wood skin with a UV paint surface; b. the surface is adhered with a technical veneer dipped with adhesive film paper; c. the surface is coated with bamboo and wood skin with UV paint.

8. The vertical core plate applied to the bamboo-wood composite plate core as claimed in claim 7, wherein: when the upper decoration layer and the lower decoration layer are both scientific wood veneers with the surfaces bonded with impregnated bond paper, fiber cloth is paved between the upper decoration layer and the upper surface layer and between the lower decoration layer and the lower surface layer.

9. The vertical core plate applied to the bamboo-wood composite plate core as claimed in any one of claims 5-6 and 8, wherein: the upper decorative layer, the upper surface layer, the board core, the lower surface layer and the lower decorative layer are bonded together from top to bottom through a thermoplastic resin adhesive film.

Technical Field

The invention belongs to the technical field of artificial boards, and particularly relates to a bamboo-wood composite board core and a vertical core board applied by the same.

Background

Because the shortage of natural wood resources is increasing, and the artificial board can make full use of small-diameter wood and leftover materials in the wood processing process, the utilization rate of the wood is improved, so that the artificial board is more and more applied to the fields of furniture manufacture, house decoration and the like. The artificial boards in the market are various, and the artificial boards are usually decorated by shaving boards, core-board boards, plywood and the like. Compared with other artificial boards, the blockboard has the characteristics of good nail-holding power, high strength, low water content, hardness, sound absorption, heat insulation and the like, so that the blockboard has the most wide application in the artificial boards.

The laminated wood board is a special laminated wood board which is produced by splicing wood laths with specific size, width and thickness into a large-size board core, covering two or more layers of laminated wood boards on two sides and gluing and pressing on the two sides on the basis of the production of the laminated wood board. The performance indexes of the blockboard such as transverse static bending strength, surface evenness, thickness deviation and the like are mainly determined by the internal board core structure.

In the prior art, when a core of a core board is manufactured, logs are generally cut into core strips, the core strips are cooled or dried, the core strips are spliced into the core board of the core board, and the core board with the structure is manufactured into the core board of the core board. Because the core is the stuff processed from the small diameter log, the small diameter stuff is uneven, the inner stress is large and the deformation is large after the core is pieced together, which leads to the situation that the end part of the core-board is easy to warp or crack after a period of time, thus seriously reducing the beauty and the use performance. In other words, the existing core board has a predetermined structure, which is a main cause of quality defects such as low transverse static bending strength and poor deformation resistance of the existing core board.

Disclosure of Invention

In order to solve the defects in the prior art, the invention aims to provide a bamboo-wood composite board core with higher transverse static bending strength and better deformation resistance and a vertical core board applied by the bamboo-wood composite board core.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a bamboo-wood composite board core is formed by alternately paving a plurality of groups of battens and a plurality of longitudinal bamboo battens to assemble blanks, gluing and pressing; the width of the longitudinal bamboo strips is larger than the thickness of the longitudinal bamboo strips, the width direction of the longitudinal bamboo strips is consistent with the thickness direction of the board core, and the bamboo grain direction of the longitudinal bamboo strips is consistent with the length direction of the board core;

the batten is formed by splicing a plurality of core strips, each core strip is formed by cutting a multi-layer veneer assembly after hot pressing, the superposition direction of the veneers is positioned in the width direction of the core strip, and the wood grain direction of the veneers is positioned in the length direction of the core strip.

As the limitation of the invention, the width of the longitudinal bamboo strip is 10-15 mm, the thickness is 3-5 mm, and the length is 2.5-2.8 m.

As another limitation of the invention, a plurality of transverse bamboo battens are embedded at both ends of the upper surface and the lower surface of the board core; the width direction of the transverse bamboo strips is consistent with the thickness direction of the board core, and the transverse bamboo strips in the upper surface of the board core and the transverse bamboo strips in the lower surface of the board core are staggered with each other.

As a further limitation of the invention, the width of the transverse bamboo strip is 4-7 mm, the thickness is 6-8 mm, and the length is 1.1-1.3 m.

The invention also discloses a vertical core plate applied to the bamboo-wood composite plate core, which comprises an upper decoration layer, an upper surface layer, a plate core, a lower surface layer and a lower decoration layer which are mutually bonded from top to bottom, wherein the plate core adopts the bamboo-wood composite plate core.

As the limitation of the invention, the upper surface layer and the lower surface layer are single-layer veneers with the thickness of 3.0 mm; or the upper surface layer and the lower surface layer are both single plates with the thickness of 1.7 mm.

As another limitation of the present invention, the upper decoration layer and the lower decoration layer are both any one of the following structures: a. the surface is coated with a solid wood skin with a UV paint surface; b. the surface is adhered with a technical veneer dipped with adhesive film paper; c. the surface is coated with bamboo and wood skin with UV paint.

As a further limitation of the present invention, when the upper decoration layer and the lower decoration layer are both made of scientific wood veneers with impregnated bond paper on the surfaces, fiber cloth is paved between the upper decoration layer and the upper surface layer and between the lower decoration layer and the lower surface layer.

As another limitation of the invention, the upper decorative layer, the upper surface layer, the board core, the lower surface layer and the lower decorative layer are bonded together from top to bottom through the thermoplastic resin adhesive film.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects:

(1) the biggest improvement of the invention on the board core structure is that longitudinal bamboo strips and transverse bamboo strips are laterally embedded into the board core to form a grid net-shaped structure to fasten the board core. Because the toughness, hardness and transverse strength of the bamboo strips are superior to those of core strips made of common materials, the transverse static bending strength and deformation resistance of the board core can be greatly improved after the bamboo strips in the longitudinal and transverse directions are embedded in the board core. The method specifically comprises the following steps: the longitudinal bamboo battens clamped in the board core can reduce the influence of the splicing broken joints of the core battens on the transverse static bending strength of the board core, so that the integrity of the spliced core battens is better; the transverse bamboo strips embedded in the board core can strengthen the structures at two ends of the board core, can effectively solve the problem of warping deformation of the board core along the length direction of the board core, and improves the deformation resistance of the board core.

In a more vivid way, the bamboo strips which are staggered transversely and longitudinally in the board core are similar to reinforcing rib structures.

(2) In the lath of the board core, the wood grain direction of the veneer is staggered with the deformation direction of the core strip by changing the superposition direction of the veneer in the core strip, so that the internal stress in the board core is changed, and the board core can be effectively prevented from being warped and deformed along the wood grain direction of the veneer due to long-term use. Therefore, the vertical core plate made of the plate core has stable performance, longer service life and better aesthetic property.

(3) Besides the structure of the core plate, the decorative layer of the vertical core plate is improved, and the improvement point is that firstly, a UV paint surface bamboo-wood skin decorative layer structure is newly added; and secondly, when the scientific and technological veneer of the conventional impregnated bond paper is used as a decorative layer, a fiber cloth filling layer is further added.

Firstly, compared with common wood, the bamboo skin has fast yield and high yield, the annual selective cutting can be realized after one-time afforestation is successful, the bamboo skin is adopted to replace solid wood skin, and the scientific wood skin is used as a decorative veneering material, so that the cutting utilization of the wood (especially high-grade wood) can be reduced, and the contribution force to the protection of ecological environment can be realized to a certain extent; most importantly, the texture of the bamboo skin is straight and natural, the texture is elegant and simple, the repaired surface is extremely few, the quality of the bamboo skin can be completely comparable with that of thin skins of other high-grade precious tree species, and the bamboo skin is more economic, lower in price and higher in integrity and price ratio than solid wood skin and technical wood skin;

and secondly, by utilizing the fiber cloth, the defects such as depressions, indentations, holes, cracks and the like on the surfaces of the board core, the upper surface layer and the lower surface layer can be filled and leveled, so that the defects can not be extended to the surface of the vertical core board, the defects of dry decoration, carbonization and the like of the board surface of the vertical core board when the technical wood veneer of the conventional impregnated bond paper is used as a decorative layer are avoided, the number of defective products in the production process can be reduced, and the income of enterprises can be improved to a certain extent.

(4) The invention adopts the UV paint surface with extremely high transparency to treat the surfaces of the bamboo veneer and the solid wood veneer, solves the problems of water resistance, scratch resistance, fading resistance and the like, and simultaneously can avoid the real reflection of the texture of the bamboo veneer and the solid wood veneer on the surface of the board caused by the coverage of the paint surface. Therefore, the bamboo veneer or the solid wood veneer coated with the UV paint surface has clear and bright texture, real reflection and good aesthetic property, and can replace a solid wood plate to meet the experience requirement of consumers on solid wood furniture to a great extent.

(5) According to the invention, the thermoplastic resin adhesive film is selected to replace an adhesive to bond the upper decorative layer, the upper surface layer, the board core, the lower surface layer and the lower decorative layer together, so that on one hand, the production process is simpler, the production efficiency can be correspondingly improved, and the cost can be saved; on the other hand, the content of formaldehyde in the product can be reduced, so that the product is free from formaldehyde.

In conclusion, the invention has high transverse static bending strength, excellent deformation resistance, good integral flatness and beautiful texture, is suitable for the fields of interior decoration, furniture manufacture and the like, and is particularly suitable for manufacturing cabinet doors such as wardrobes, cabinets, door leaves and the like.

Drawings

The invention is described in further detail below with reference to the figures and the embodiments.

FIG. 1 is a plan view showing the structural relationship of a core plate in example 1 of the present invention;

FIG. 2 is a top view of the structural relationship of the slat of example 1 of the present invention;

FIG. 3 is a schematic structural relationship diagram of a core bar in example 1 of the present invention;

FIG. 4 is a cross-sectional view showing the structural relationship of the core plate in embodiment 2 of the present invention;

in the figure: 1. a slat; 2. longitudinal bamboo strips; 3. transverse bamboo strips; 4. a core bar; 5. a single board; 6. a board core; 7. an upper surface layer; 8. a lower surface layer; 9. an upper decorative layer; 10. a lower decorative layer.

Detailed Description

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the description of the preferred embodiment is only for purposes of illustration and understanding, and is not intended to limit the invention.

Embodiment 1A bamboo-wood composite board core

The embodiment changes the original structure of the core strip 4 for forming the board core 6, adjusts the superposition direction of the single board 5 in the core strip 4, and makes the wood grain direction of the single board 5 and the deformation direction of the core strip 4 staggered, and on the basis, the integrity of the board core 6 is further improved by clamping the longitudinal bamboo strips 2 and embedding the transverse bamboo strips 3, so that the finally manufactured board core 6 has more excellent transverse static bending strength, deformation resistance and the like. In fig. 1 to 3, L represents a length; d represents the width; h represents the thickness.

As shown in fig. 1, the core 6 in this embodiment is formed by alternately laying a plurality of groups of laths 1 and a plurality of longitudinal bamboo strips 2, assembling them, gluing them, and pressing them, and a plurality of transverse bamboo strips 3 are embedded in both ends of the upper and lower surfaces of the core 6 in a staggered manner. The manufacturing process is as follows:

firstly, respectively gluing the upper surface and the lower surface of the single plate 5, and superposing N layers in the sequence from bottom to top to finish the assembly of the single plate 5. Wherein N is not less than 2, and in the embodiment, N = 15. After assembly, the multilayer single plates 5 are hot-pressed by a hot press to form a plate square, and then the plate square is cut according to the specified size to form the core strips 4, wherein the length of the core strips 4 is 500mm, the width of the core strips is 45mm, and the thickness of the core strips is 12 mm. Further, as shown in FIG. 3, the laminated direction of the veneer 5 is located in the width direction of the core 4, and the wood grain direction of the veneer 5 is located in the length direction of the core 4, so as to ensure that the wood grain direction of the veneer 5 is staggered with the deformation direction of the board core 6.

Secondly, as shown in fig. 2, a plurality of core strips 4 are assembled into an assembly to form a plurality of groups of battens 1; and then a bamboo strip with the length of 2.5-2.8 m, the width of 10-15 mm and the thickness of 3-5 mm is clamped between every two adjacent groups of battens 1, and a board core 6 foundation is formed through gluing, side accumulation and hot pressing. Wherein, when alternately mating formation lath 1 and vertical bamboo strip 2 in proper order, need guarantee: the width of the longitudinal bamboo batten 2 is the thickness of the board core 6, and the bamboo grain direction of the longitudinal bamboo batten 2 is the extending direction of the length of the board core 6.

It should be noted here that in the present embodiment, each group of slats 1 of the assembled assembly has a length of 2.8m, a width of 180mm and a thickness of 12mm, and the longitudinal bamboo strips 2 have a length of 2.8m, a width of 12mm and a thickness of 4 mm. Moreover, the core 6 foundation in this embodiment is formed by alternately laying 7 groups of battens 1 and 6 longitudinal bamboo battens 2, that is, the size of the core 6 foundation is 2.8m long, 1284mm wide and 12mm thick.

After the manufacturing of the 6 foundations of the board core is completed, the two ends of the upper surface and the lower surface of the board core are grooved along the width direction of the board core 6, and the positions of the grooves on the two surfaces are staggered so as to embed a plurality of transverse bamboo strips 3 with the length of 1.1-1.3 m, the width of 6-8 mm and the thickness of 4-7 mm on the 6 foundations of the board core. Simultaneously, ensuring that: the transverse bamboo strips 3 are laterally embedded into the foundation of the board core 6, namely the groove width is the thickness of the transverse bamboo strips 3, and the groove depth is the width of the transverse bamboo strips 3.

In this embodiment, three horizontal bamboo splints 3 with the length of 1.2m, the width of 8mm and the thickness of 5mm are respectively embedded on the upper surface and the lower surface of the plate core 6, which specifically comprises: the upper surface of the base of the plate core 6 is respectively embedded with one transverse bamboo strip 3 at the position 100mm and 1200mm away from the left end and 100mm away from the right end, and the lower surface of the base of the plate core 6 is respectively embedded with one transverse bamboo strip 3 at the position 200mm away from the left end and 200mm and 1200mm away from the right end.

Finally, the bamboo-wood composite board core 6 shown in figure 1 is manufactured.

Embodiment 2 vertical core plate applied to bamboo-wood composite plate core

As shown in fig. 3, the core vertical plate in this embodiment includes an upper decorative layer 9, an upper surface layer 7, a plate core 6, a lower surface layer 8, and a lower decorative layer 10, which are bonded to each other from top to bottom, where the plate core 6 is the bamboo-wood composite plate core 6 disclosed in embodiment 1.

The upper surface layer 7 and the lower surface layer 8 which are adhered to the surface of the board core 6 are used for preventing the core strips 4 or the longitudinal bamboo strips 2 and the transverse bamboo strips 3 in the board core 6 from being dislocated and deformed due to the action of external force. Specifically, the upper surface layer 7 and the lower surface layer 8 may be single-layer veneers 5 (each layer of veneers 5 is 3.0mm in thickness) or double-layer veneers 5 (each layer of veneers 5 is 1.7mm in thickness).

Furthermore, the upper decoration layer 9 and the lower decoration layer 10 are used for decoration and beautification, and are decoration panel layers of the vertical core plate. Wherein, the upper decoration layer 9 is adhered on the upper surface of the upper surface layer 7, the lower decoration layer 10 is adhered on the lower surface of the lower surface layer 8, and the upper decoration layer 9 and the lower decoration layer 10 can be any one of the following structures: a. the surface is coated with a solid wood skin with a UV paint surface; b. the surface is adhered with a technical veneer dipped with adhesive film paper; c. the surface is coated with bamboo and wood skin with UV paint. The method specifically comprises the following steps:

a. an upper decorative layer 9 and a lower decorative layer 10, namely a solid wood skin coated with UV paint surfaces on the surface: the solid wood veneer is any one of oak veneer, sandalwood veneer and black walnut veneer, and the UV paint surface coated on the surface can ensure that the texture of the solid wood veneer can be truly and completely reflected;

b. the upper decoration layer 9 and the lower decoration layer 10 are scientific wood veneers with the surfaces adhered with impregnated bond paper: the difference is that the scientific and technological veneer is bonded in front of the surfaces of the upper surface layer 7 and the lower surface layer 8 as a decorative layer, and at least one layer of fiber cloth needs to be paved between the scientific and technological veneer and the upper surface layer 7 and the lower surface layer 8 so as to fill the defects of depression, indentation, holes, cracks and the like in the board core 6, the upper surface layer 7 and the lower surface layer 8.

c. The upper decoration layer 9 and the lower decoration layer 10 are bamboo skins coated with UV paint surfaces: the bamboo skin layer adopts the bamboo skin in the existing structure, and the UV paint surface coated on the surface can ensure that the bamboo lines can be truly and completely reflected.

In this embodiment, the upper surface layer 7 and the lower surface layer 8 are both single-layer veneers 5 with a thickness of 3.0mm, and the upper decorative layer 9 and the lower decorative layer 10 are both bamboo and wood veneers with UV paint surfaces coated on the surfaces. In addition, in order to simplify the process and reduce the formaldehyde content of the product, the upper decorative layer 9, the upper surface layer 7, the plate core 6, the lower surface layer 8 and the lower decorative layer 10 are bonded together from top to bottom through thermoplastic resin adhesive films.

Standing core performance assessment (see corresponding test report in appendix for details):

for the vertical core plate product disclosed in this embodiment, the inspection report of "artificial board and wood inspection laboratory of the chinese forestry science research institute" shows: the bending resistance and the distortion resistance of the artificial board are superior to those of the common artificial board no matter in a high-humidity environment or a low-humidity environment; the inspection report of the national quality supervision and inspection center for artificial boards and wood and bamboo products shows that: the test results of items such as screw holding force, dipping and peeling, transverse static bending strength, formaldehyde emission and the like are all superior to standard specified values.

Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.