CN210414862U

CN210414862U - Three-layer thick core anti-deformation plywood

Info

Publication number: CN210414862U
Application number: CN201921070053.5U
Authority: CN
Inventors: 毕召勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-10
Filing date: 2019-07-10
Publication date: 2020-04-28
Anticipated expiration: 2029-07-10

Abstract

The utility model discloses a three-layer thick core anti-deformation plywood, which comprises a core plate, an upper panel and a lower panel, wherein the upper panel and the lower panel are pressed on two surfaces of the core plate by coating glue; the lower panel is formed by splicing a plurality of second long plates; the number of the second long plate pieces is different from that of the first long plate pieces, and the joints of two adjacent first long plate pieces and the joints of two adjacent second long plate pieces are staggered; the utility model can reduce the deformation, improve the flatness of the plate surface and improve the product quality; the glue consumption can be reduced, the utilization rate of raw materials is improved, and the production cost is reduced; the air permeability during hot pressing can be improved, and the probability of bulging and glue failure is reduced.

Description

Three-layer thick core anti-deformation plywood

Technical Field

The utility model relates to a thick core of three-layer shape plywood of preapring for an unfavorable turn of events belongs to plywood technical field.

Background

The plywood is one of common packaging materials for furniture and is an artificial board. As shown in fig. 2, a conventional plywood, which is a panel generally assembled and glued in a direction perpendicular to the direction of the grain of adjacent layers, includes a multi-layered structure including a central panel 101, upper and lower surface panels 102, and a plurality of inner panels 103, and the surface panels 102 and the inner panels 103 are generally symmetrically disposed on both sides of the central panel 101. Pressing the glued single board into a board blank which is formed by criss-cross matching according to the wood grain direction under the condition of heating or not heating; the number of layers is generally odd, and a few are even. The difference of physical and mechanical properties in the longitudinal and transverse directions is small. Each of the skin sheet 102 and the inner sheet 103 is divided into the same number of sheets in the width direction. Plywood of this construction, the thickness of the centre panel 101, the face panel 102 and the inner panel 103 is typically less than 2.0MM, the thicker the plywood the more plies are required to achieve the required thickness, the odd plies typically having 3, 5, 7, 9, 11, 13 plies, for example a plywood thickness of 21MM, approximately 11-13 plies being required. Such plywood structures suffer from the following disadvantages:

1. the thicker the plywood needs more layers, the labor cost is high, and workers pay wages according to the layers when paving, so that labor is wasted.

2. The amount of glue used is too great because each layer of glue is used.

3. The hot pressing time is too long, and the heat energy for curing the glue is increased every kilogram of glue is used.

4. The environment-friendly glue is not environment-friendly, the environment-friendly glue is obtained by aiming at the glue consumption, and the larger the glue consumption is, the more the environment-friendly glue is.

With the strong call of the country for environmental protection and energy conservation, a thick-core plywood is grown in the market, as shown in fig. 3, the improved plywood in the prior art comprises a three-layer structure which is a middle layer 104, a surface layer 105 and a bottom layer 106, the middle layer 104, the surface layer 105 and the bottom layer 106 are all a whole board, and the thicknesses of the middle layer 104, the surface layer 105 and the bottom layer 106 are 3-10 mm; compared with the plywood in figure 2, the plywood with the same thickness needs a reduced number of layers, the glue consumption is reduced, the labor cost is reduced, the plywood is not only environment-friendly but also energy-saving, but the plywood with the structure is not popularized, and the main reason for researching the plywood with the structure is that the plywood with the structure has the following defects:

1. it is easily deformed because the surface layer 105 and the bottom layer 106 are uniformly textured, perpendicular to the middle layer 104, and the middle layer 104 has only one layer. The surface layer and the bottom layer are textures in the same direction, so that the surface layer and the bottom layer are easy to bend or scoop along the directions of the surface layer and the bottom layer.

2. The surface of the plate is uneven, the whole plate is easy to deform in the airing process, and the larger the whole plate surface is, the more difficult the hot-pressing shaping is.

3. The utilization rate of raw materials is low. Once a hole is formed in the middle of the material plate surface, the hole is difficult to remove, and marks are formed or the hole cannot be completely repaired if the hole is repaired, so that small cavities are left.

4. The possibility of glue failure is high, and because the whole plate has a large breadth, the air permeability is poor during hot pressing, hot air can not come out, and the phenomenon of glue swelling and glue failure is caused.

5. The energy is wasted, and the hot pressing time is long because the moisture of the whole thick surface layer is difficult to release quickly.

In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the three-layer thick core anti-deformation plywood can reduce the deformation, improve the flatness of the board surface and improve the product quality; the glue consumption can be reduced, the utilization rate of raw materials is improved, and the production cost is reduced; the air permeability during hot pressing can be improved, and the probability of bulging and glue failure is reduced.

For solving the technical problem, the utility model discloses a following technical scheme: the three-layer thick-core anti-deformation plywood comprises a core board, an upper panel and a lower panel, wherein the upper panel and the lower panel are coated with glue and pressed on two surfaces of the core board; the lower panel is formed by splicing a plurality of second long plates; the number of the second long plate pieces is different from that of the first long plate pieces, and the joints of two adjacent first long plate pieces and the joints of two adjacent second long plate pieces are staggered; the width of the second long plate and the width of the first long plate are both 15-60 cm.

Furthermore, the first long plates are sequentially arranged along the width direction of the plywood; the long side edges of two adjacent first long sheets are fixedly connected together through adhesive; the fiber directions of the first long plate pieces are consistent.

Furthermore, the second long sheets are sequentially arranged along the width direction of the plywood; the long side edges of two adjacent second long sheets are fixedly connected together through adhesive; the fiber directions of the second long plate pieces are consistent.

Further, the length of first long slab and second long slab is the same with the length of plywood, first long slab and second long slab all form along the reverse cutting of fibre.

Further, the core plate is a whole plate.

Furthermore, the core board is formed by splicing a plurality of short boards which are sequentially arranged along the length direction of the plywood; the long side edges of two adjacent short sheets are fixedly connected together through adhesive; the fiber directions of the plurality of short sheets are consistent.

Further, the short sheet is cut along the fiber direction; the length of the short sheet is the same as the width of the plywood.

Further, the fiber directions of the core plate and the upper panel are mutually vertical; the fiber direction of the upper panel and the lower panel is the same.

The utility model adopts the above technical scheme after, compare with prior art, have following advantage:

the utility model can reduce the deformation, improve the flatness of the plate surface and improve the product quality; the glue consumption can be reduced, the utilization rate of raw materials is improved, and the production cost is reduced; the air permeability during hot pressing can be improved, and the probability of bulging and glue failure is reduced.

The present invention will be described in detail with reference to the accompanying drawings and examples.

Drawings

FIG. 1 is a schematic structural view of example 1;

FIG. 2 is a schematic structural view of a plywood panel commonly used in the prior art;

FIG. 3 is a schematic view of a prior art modified plywood panel;

FIG. 4 is a schematic structural view of example 2;

in the figure, the position of the upper end of the main shaft,

1-core board, 11-short sheet, 2-upper panel, 21-first long sheet, 3-lower panel, 31-second long sheet, 101-central panel, 102-surface panel, 103-inner panel, 104-middle layer, 105-surface layer, 106-bottom layer.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.

Example 1 three-layer thick core anti-deformation plywood

As shown in fig. 1, the utility model provides a three-layer thick core anti-deformation plywood, which comprises a core board 1, an upper panel 2 and a lower panel 3; the core plate 1 is arranged between the upper panel 2 and the lower panel 3; the core plate 1 and the upper panel 2, and the core plate 1 and the lower panel 3 are glued, pressed and fixed together.

The fiber directions of the core plate 1 and the upper panel 2 are mutually vertical; the upper and

lower face sheets

2 and 3 have the same fiber direction.

The upper panel 2 is formed by splicing a plurality of first long plates 21, the first long plates 21 are cut along the fiber direction, so that the number of cutting seams is small, the deformation is small, the cutting seams are more orderly, the butt joint between two adjacent first long plates 21 is easy, and the paving time is reduced; the length of the first long plate pieces 21 is the same as that of the plywood, and the first long plate pieces 21 are sequentially arranged along the width direction of the plywood; the long side edges of two adjacent first long sheets 21 are fixedly connected together through adhesive glue; the fiber directions of the plurality of first long sheet pieces 21 are uniform.

The lower panel 3 is formed by splicing a plurality of second long plates 31; the second long plate pieces 31 are cut along the long fiber direction, so that the number of cut seams is small, the deformation is small, the cut seams are more orderly, the butt joint between two adjacent second long plate pieces 31 is easy, and the paving time is shortened; the length of the second long plate 31 is the same as that of the plywood, and the second long plates 31 are sequentially arranged along the width direction of the plywood; the long side edges of two adjacent second long sheets 31 are fixedly connected together through adhesive; the fiber directions of the plurality of second long sheets 31 are uniform.

The widths of the second long plate piece 31 and the first long plate piece 21 are both 15-60 cm; the number of the second long plate pieces 31 is different from that of the first long plate pieces 21, and the joints of two adjacent first long plate pieces 21 and the joints of two adjacent second long plate pieces 31 are staggered.

The core plate 1 is a whole plate; the thickness of the core plate 1 is 3-10 mm; the thickness of the preferred core plate 1 of this embodiment is preferably 7.5 mm.

Example 2 three-layer thick core anti-deformation plywood

As shown in fig. 4, the present invention provides a three-layer thick-core anti-deformation plywood, which is different from embodiment 1 in that a core board 1 is formed by splicing a plurality of short boards 11, and the short boards 11 are cut along a fiber direction; the length of the short sheet 11 is the same as the width of the plywood; the plurality of short sheets 11 are sequentially arranged along the length direction of the plywood; the long side edges of two adjacent short sheets 11 are fixedly connected together through adhesive; the plurality of short sheet pieces 11 have the same fiber direction.

The number of the short sheets 11 is more than the number of the first long sheet 21 and the second long sheet 31.

The three-layer thick core anti-deformation plywood is rectangular or square, and the specification and the size of the plywood are customized according to requirements.

The foregoing is illustrative of the best mode of the invention, and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The protection scope of the present invention is subject to the content of the claims, and any equivalent transformation based on the technical teaching of the present invention is also within the protection scope of the present invention.

Claims

1. The utility model provides a three-layer thick core preapre for an unfavorable turn of events shape plywood, includes core (1) and rubber coating suppression at upper panel (2) and lower panel (3) of core (1) two surfaces, its characterized in that: the upper panel (2) is formed by splicing a plurality of first long plates (21); the lower panel (3) is formed by splicing a plurality of second long plates (31); the number of the second long plate pieces (31) is different from that of the first long plate pieces (21), and the joints of two adjacent first long plate pieces (21) are staggered with the joints of two adjacent second long plate pieces (31); the width of the second long plate piece (31) and the width of the first long plate piece (21) are both 15-60 cm.

2. The three-layer thick core anti-deformation plywood of claim 1, wherein: the first long sheets (21) are sequentially arranged along the width direction of the plywood; the long side edges of two adjacent first long sheets (21) are fixedly connected together through adhesive glue; the fiber directions of the first long plate pieces (21) are consistent.

3. The three-layer thick core anti-deformation plywood of claim 1, wherein: the second long sheets (31) are sequentially arranged along the width direction of the plywood; the long side edges of two adjacent second long sheets (31) are fixedly connected together through adhesive glue; the fiber directions of the second long plate pieces (31) are consistent.

4. The three-layer thick core anti-deformation plywood of claim 1, wherein: the length of the first long plate piece (21) and the length of the second long plate piece (31) are the same as that of the plywood, and the first long plate piece (21) and the second long plate piece (31) are formed by cutting along the fiber direction.

5. The three-layer thick core anti-deformation plywood of claim 1, wherein: the core plate (1) is a whole plate.

6. The three-layer thick core anti-deformation plywood of claim 1, wherein: the core board (1) is formed by splicing a plurality of short board pieces (11), and the short board pieces (11) are sequentially arranged along the length direction of the plywood; the long side edges of two adjacent short sheets (11) are fixedly connected together through adhesive; the plurality of short sheets (11) have the same fiber direction.

7. The three-layer thick core anti-deformation plywood of claim 6, wherein: the short sheet (11) is cut along the fiber direction; the length of the short sheet (11) is the same as the width of the plywood.

8. The three-layer thick core anti-deformation plywood of claim 1, wherein: the fiber directions of the core plate (1) and the upper panel (2) are mutually vertical; the fiber direction of the upper panel (2) is the same as that of the lower panel (3).