CN202163065U - Bamboo and wood composite container bottom plate with improved bamboo curtain as surface layer - Google Patents

Abstract

The utility model is a bamboo-wood composite container floor with an improved bamboo curtain as the surface layer. Its structure is a layer of improved bamboo curtain, and then 2-3 layers of bamboo curtains (or use wooden veneers instead of bamboo curtains), A layer of horizontal grained wooden veneer; then a layer of bamboo curtains and a layer of veneer are arranged at intervals inwardly, or all wooden veneers, and the texture of the middle three layers is all vertical. A layer of phenolic impregnated material is used on the outermost layer of the above structure. Its manufacturing method: the moisture content of the wooden veneer is ≤10%, glue on both sides of the wooden veneer, aging or low-temperature drying; the veneer, bamboo curtain and impregnated paper are assembled at a temperature of 130-150 ° C, the highest Hot pressing is carried out under the condition of pressure of 2.0-3.5MPa. Advantages: the surface layer is an improved bamboo curtain made of thin bamboo slices of equal width through new splicing. The container bottom plate made is beautiful, wear-resistant and stable in quality. The performance indicators such as volume meet the technical requirements of the international container industry.

Description

A bamboo-wood composite container bottom plate with improved bamboo curtain as the surface layer

technical field

The utility model relates to a bamboo-wood composite container floor with an improved bamboo curtain as the surface layer, which belongs to the technical field of wood-based panel manufacturing in the wood industry.

Background technique

The main load-bearing area of a container is the bottom plate. The container manufacturing industry requires the bottom plate to have high mechanical properties, appearance quality, impact resistance and aging resistance. The existing bamboo-wood composite container floor has two forms: the surface layer of patent ZL 98111153.x is a kind of bamboo-wood composite container floor with impregnated paper and bamboo mat, and the surface layer of another patent ZL 03152841.4 is formed by high-pressure hot pressing A thin layer of high-density bamboo is used as the surface and back layer, and then combined with structural particleboard or poplar veneer as the core for a second heat press. The first kind needs to impregnate the paper and bamboo mat in order to obtain a beautiful appearance, and the weaving of the bamboo mat requires more labor costs, and the surface quality of the bottom plate is not high; the latter can also achieve the required mechanical properties and acceptable appearance , but because of the secondary molding, it is necessary to sand the glued surface and apply glue, and then go through secondary hot pressing and compounding, which consumes more energy, materials and labor. These two kinds of bamboo-wood composite container bottom plates all have problems such as high cost, which are difficult for container owners to accept.

Contents of the invention

The utility model provides a bamboo-wood composite container bottom plate with an improved bamboo curtain as the surface layer and its manufacturing method. The purpose is to use the improved bamboo curtain as the surface layer to obtain surface gaps through equal-width thin bamboo slices and a new splicing method. For the smaller surface layer, a layer of phenolic impregnated material with uniform color is compounded to obtain a composite bottom plate with uniform color, beautiful appearance, compact and wear-resistant surface layer, and high-strength bamboo.

The technical solution of the utility model: it is characterized by a layer of phenolic impregnated paper, a layer of improved bamboo curtains, and two layers of longitudinal textured bamboo curtains from the outside to the inside; Arrangement (except for the middlemost layer with vertical grain veneer), a total of 13 layers, the middle three layers are all longitudinal grain, and the rest are laid alternately with one horizontal grain veneer and one vertical grain veneer.

The improved bamboo curtain is that bamboo strips are processed into thin bamboo slices of equal width through special equipment, and after drying, they are made into smaller gaps with threads, thin bamboo slices, thin veneers, non-woven fabrics, etc.

The phenolic impregnated material can be impregnated paper, impregnated non-woven fabric, or impregnated glass fiber cloth.

The utility model has the advantages of effectively utilizing timber in my country and all over the world, such as various coniferous and broad-leaved timber in natural forests and artificial forests, and has the advantages of fast growth, short cycle, selective cutting every year, and sustainable utilization. Long-term bamboo resources. Combining these materials, scientifically designed and rationally combined, can not only solve the shortage of hardwood resources worldwide, but also solve the technical problem of mass production of new floor panels that meet the technical requirements of the international container industry. At the same time, through the application of improved bamboo curtains with a dense surface, the purchased bamboo mats were changed into customized improved bamboo curtains, which improved the surface quality and stability of the products.

The invention weaves special equal-width bamboo slices into bamboo curtains (or glues the tightly assembled bamboo slices with several thin wood veneers), and then combines them with bamboo curtains and veneers. Insecticides should be added to the glue used, so that it can penetrate evenly into the surface material of the container bottom plate during hot pressing, so that the bottom plate has long-term insect-proof performance; The bottom plate of the container is made of hot pressing glue, and its strength, elastic modulus, surface quality and other performance indicators can fully meet the technical requirements of the international container industry.

Description of drawings

Accompanying drawing 1 is the structural schematic diagram of the first kind of bamboo-wood composite container floor with improved bamboo curtain as the surface layer.

Accompanying drawing 2 is the second kind of bamboo-wood composite container floor structure schematic diagram with improved bamboo curtain as the surface layer.

Accompanying drawing 3 is the structure schematic diagram of the bottom plate of the third kind of bamboo-wood composite container with improved bamboo curtain as the surface layer.

Accompanying drawing 4 is the fourth kind of bamboo-wood composite container floor structure schematic diagram with improved bamboo curtain as the surface layer.

Accompanying drawing 5, accompanying drawing 6 are improved bamboo screen schematic diagrams.

In the figure: 1 is phenolic impregnated paper; 2 is the improved bamboo curtain, impregnated with phenolic glue and dried at low temperature; 3 is the vertical texture bamboo curtain, the bamboo curtain is not allowed to have bamboo green and bamboo yellow surface, and its thickness is 1.0 to 3.0 mm; 4 is wooden veneer with horizontal grain; 5 is wooden veneer with longitudinal grain; 6 is wooden veneer for the surface layer, which requires soft texture, no defects, and beautiful extruded board surface. Poplar, basswood, beech, Eucalyptus eucalyptus, African white sycamore, birch, etc.; 7 is bamboo curtain with horizontal texture, and the bamboo curtain is not allowed to have bamboo green or yellow surface, and its thickness is 1.0-2.5mm; 8 is thin bamboo slices of equal width; 9 is horizontal bamboo sheet; 10 is a horizontal veneer or non-woven fabric.

Detailed ways

According to the accompanying drawing 1, its structure is symmetrical from the outside to the inside: one layer of phenolic impregnated paper 1, one layer of improved bamboo curtain 2, two layers of longitudinal grain bamboo curtain 3; and then inward is the transverse grain veneer 4 and the longitudinal grain veneer 5 are laid alternately (except 5, which is the middlemost layer of vertical grain veneer), a total of 13 layers, the middle three layers are all longitudinal grain, and the rest are laid alternately according to a horizontal grain veneer and a vertical grain veneer.

Comparing with attached drawing 2, its structure is symmetrically called from outside to inside: one layer of phenolic impregnated paper 1, one layer of improved bamboo curtain 2, two layers of longitudinal grain bamboo curtain 3; and then inward is transverse grain veneer 4 and longitudinal grain bamboo curtain 3. Lay alternately (except the middlemost layer is vertical texture veneer 5), a total of 13 layers, the middle three layers are all vertical texture, and the rest are laid alternately according to a horizontal texture veneer and a vertical texture bamboo curtain.

Comparing with accompanying drawing 3, its structure is symmetrically called from outside to inside: one layer of phenolic impregnated paper 1, one layer of wood veneer 6 for the surface layer, one layer of improved bamboo curtain 2, one layer of longitudinal texture veneer 5, one layer of longitudinal texture bamboo Curtain 3, and laying horizontal texture veneer 4 and vertical texture bamboo curtain 3 alternately inwards (except for vertical texture veneer 5 in the middle layer), a total of 13 layers, the middle three layers are all longitudinal textures, and the rest are laid according to A horizontal grain veneer and a vertical grain bamboo curtain are laid alternately.

Comparing with accompanying drawing 4, its structure is symmetrically called from outside to inside: one layer of phenolic impregnated paper 1, one layer of improved bamboo curtain 2, one layer of transverse grain bamboo curtain 7, two layers of longitudinal grain bamboo curtain 3; then transverse grain veneer 4. Lay the vertical texture veneer 5 and the horizontal texture bamboo curtain 7 alternately inward (except for the vertical texture veneer 5 in the middle layer), a total of 11 layers, the middle three layers are all longitudinal textures, and the rest are laid according to a Horizontal grain bamboo curtains are laid alternately with a vertical grain veneer.

Embodiment 1: The structure is shown in Figure 1,

The manufacturing method of the bamboo-wood composite container floor with the improved bamboo curtain as the surface layer is as follows:

a. Sorting and finishing of wooden veneers and bamboo curtains. The moisture content of wooden veneers is ≤10%. According to the required double-sided glue coating, the glue amount is 350g/m ² , and 15% flour filler is added to the glue, aged or Drying at low temperature; improve the bamboo curtains with special equal-width bamboo pieces and weave them into bamboo curtains (or use several thin wood veneers to glue the tight bamboo pieces together), and dry all the bamboo curtains until the moisture content is below 12% , after impregnated with phenolic glue, dry at low temperature until the moisture content is below 20%, and add 2.4 grams of insecticide to the glue according to 1 kg of glue (solid content: 45%);

b. Blank assembly, from the outside to the inside: one layer of phenolic impregnated paper 1, one layer of improved bamboo curtain 2, two layers of longitudinal grain bamboo curtain 3, and then inwards are transverse grain veneer 4 and longitudinal grain veneer 5 (most The middle layer is vertical texture veneer 5), a total of 13 layers, the middle three layers are all vertical texture, and the rest are laid alternately according to a horizontal texture veneer and a vertical texture veneer. Then carry out hot pressing at a temperature of 150°C and a maximum pressure of 3.0 MPa, keep it for 35 minutes, and then depressurize, exhaust, and relieve pressure in stages; or pass cold water into the hot pressing plate, and wait for the hot pressing plate to cool down to Release the pressure after 80°C.

After conventional post-processing, the finished composite container floor can be obtained, and its physical and mechanical properties are as follows: 

MOR∥： ≥ 95 MPa

MOR⊥： ≥ 35 MPa

MOE∥： ≥ 10500 MPa

MOE⊥： ≥ 3500 MPa

Density: 0.70～0.90 g/cm ³ .

Example 2,

The structure of the bamboo-wood composite container floor with the improved bamboo curtain as the surface is shown in Figure 2.

The manufacturing method of the bamboo-wood composite container floor with the improved bamboo curtain as the surface layer is as follows:

a. Sorting and finishing of wooden veneers and bamboo curtains. The moisture content of wooden veneers is ≤10%. According to the required double-sided glue coating, the amount of glue applied is 250g/m ² , and 15% flour filler is added to the glue, aged or Drying at low temperature; improve the bamboo curtains with special equal-width bamboo pieces and weave them into bamboo curtains (or use several thin wood veneers to glue the tight bamboo pieces together), and dry all the bamboo curtains until the moisture content is below 12% , after impregnated with phenolic glue, dry at low temperature until the moisture content is below 20%, and add 2.4 grams of insecticide to the glue according to 1 kg of glue (solid content: 45%);

b. Blank assembly, from outside to inside: one layer of phenolic impregnated paper 1, one layer of improved bamboo curtain 2, two layers of longitudinal grain bamboo curtain 3, and then inwards horizontal grain veneer 4 and longitudinal grain bamboo curtain 3 (most The middle layer is vertical texture veneer 5), a total of 13 layers, the middle three layers are all vertical texture, and the rest are laid alternately with a horizontal texture veneer and a vertical texture bamboo curtain. Then carry out hot pressing at a temperature of 135°C and a maximum pressure of 2.5 MPa, keep it for 40 minutes, and then depressurize, exhaust, and relieve pressure in stages; or pass cold water into the hot pressing plate until the hot pressing plate is cooled to Release the pressure after 80°C.

After conventional post-processing, the finished composite container floor can be obtained, and its physical and mechanical properties are as follows:

MOR∥： ≥ 95 MPa

MOR⊥： ≥ 35 MPa

MOE∥： ≥ 10500 MPa

MOE⊥： ≥ 3500 MPa

Density: 0.70～0.90 g/cm ³ .

Example 3,

The structure of the bamboo-wood composite container floor with the improved bamboo curtain as the surface is shown in Figure 3.

The manufacturing method of the bamboo-wood composite container floor with the improved bamboo curtain as the surface layer is as follows:

a. Sorting and finishing of wooden veneers and bamboo curtains. The moisture content of wooden veneers is ≤10%. According to the required double-sided glue coating, the amount of glue applied is 300g/m ² , and 15% flour filler is added to the glue, aged or Dry at low temperature; improve the bamboo curtains to be made of specially made equal-width bamboo pieces and weave them into bamboo curtains (or use several thin wood veneers to glue the tightly bound bamboo pieces together), and dry all the bamboo curtains until the moisture content is below 10% , after impregnated with phenolic glue, dry at low temperature until the moisture content is below 20%, and add 2.4 grams of insecticide to the glue according to 1 kg of glue (solid content: 45%);

b. Blank assembly, from outside to inside: a layer of phenolic impregnated paper 1, a layer of wooden veneer for the surface layer 6, a layer of improved bamboo curtain 2, a layer of longitudinal grain veneer 5, a layer of longitudinal grain bamboo curtain 3, Further inwards are the horizontal texture veneer 4 and the vertical texture bamboo curtain 3 (except for the vertical texture veneer 5 in the middle layer), a total of 13 layers, the middle three layers are all vertical textures, and the rest are a horizontal texture veneer It is laid alternately with a vertical grain bamboo curtain. Then carry out hot pressing at a temperature of 140°C and a maximum pressure of 2.5 MPa, keep it for 35 minutes, and then depressurize, exhaust, and relieve pressure in stages; or pass cold water into the hot pressing plate, and wait for the hot pressing plate to cool down to After a certain temperature, the pressure is released.

After conventional post-processing, the finished composite container floor can be obtained, and its physical and mechanical properties are as follows:

MOR∥: ≥ 95 MPa;

MOR⊥: ≥ 35 MPa;

MOE∥: ≥ 11000 MPa;

MOE⊥: ≥ 3500 MPa;

Density: 0.70～0.90 g/cm ³ .

Claims (4)

1. one kind is the bamboo wood composite container baseboard on top layer to improve bamboo curtain splint, it is characterized in that from outside to inside to being called one deck hard paper, one deck improvement bamboo curtain splint, two-layer vertical texture bamboo curtain splint; Again inwardly for cross grain veneer and vertical texture veneer are spaced, totally 13 layers, in the middle of three layers be vertical texture, remaining is then by a cross grain veneer and the alternate laying of a vertical texture veneer.

2. according to claim 1 a kind of be the bamboo wood composite container baseboard on top layer to improve bamboo curtain splint, it is characterized in that from outside to inside to be called one deck hard paper, one deck improves bamboo curtain splint, two layers of vertical texture bamboo curtain splint; Again inwardly for cross grain veneer and vertical texture bamboo curtain splint are spaced, or adopt cross grain bamboo curtain splint and vertical texture bamboo curtain splint to be spaced, totally 13 layers, in the middle of three layers be vertical texture, remaining is then by a cross grain and the alternate laying of a vertical texture.

3. according to claim 1 a kind of be the bamboo wood composite container baseboard on top layer to improve bamboo curtain splint, it is characterized in that from outside to inside to being called one deck hard paper, one deck top layer with Wooden veneer, one deck improvement bamboo curtain splint, the vertical texture veneer of one deck, the vertical texture bamboo curtain splint of one deck; Again inwardly for cross grain veneer and vertical texture bamboo curtain splint are spaced, totally 13 layers, in the middle of three layers be vertical texture, remaining is then by a cross grain veneer and the alternate laying of a vertical texture bamboo curtain splint.

4. according to claim 1 a kind of be the bamboo wood composite container baseboard on top layer to improve bamboo curtain splint; It is characterized in that being the cross grain veneer to being called one deck hard paper, one deck improvement bamboo curtain splint, one deck cross grain bamboo curtain splint, two-layer vertical texture bamboo curtain splint, following from outside to inside; Again inwardly for vertical texture veneer and cross grain bamboo curtain splint are spaced, totally 11 layers, the centre is vertical texture for three layers, and remaining then presses a cross grain bamboo curtain splint and the alternate laying of a vertical texture veneer.

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