A new type of lightweight and wear-resistant container bottom plate

Abstract

The present invention discloses a novel lightweight wear-resistant container bottom plate, which belongs to the technical field of container bottom plates, and includes, from top to bottom, a wear-resistant layer, a COSB plate (a high-strength oriented structural plate for container bottom plates), a first fiber-reinforced layer, a high-polymer honeycomb core plate, a second fiber-reinforced layer, a COSB plate (a high-strength oriented structural plate for container bottom plates), and a bottom plate layer. Since wear-resistant powder is added to the wear-resistant layer on the surface of the container bottom plate, the ability to resist forklift grinding and cargo loading and unloading friction is improved, and the service life of the surface layer of the container bottom plate is greatly extended; the high-polymer honeycomb core plate has low density and excellent shear and bending resistance, which reduces the dead weight of the container, is conducive to improving freight capacity and reducing freight costs; and the wear-resistant layer panel formed by hot pressing has extremely strong wear resistance, and also has the characteristics of anti-slip, no-washing and acid-alkali resistance, thereby improving the service life and applicability of the container bottom plate.

Description

Technical Field

[0001] The invention belongs to the technical field of container bottom plates, and in particular relates to a novel lightweight and wear-resistant container bottom plate. Background Art

[0002] The container floor is mainly used to carry goods, and has high requirements for its strength. Traditional container floors are mostly made of Southeast Asian tropical hardwood, which has extremely high production costs. With the depletion of log resources and environmental pressure, more and more materials such as bamboo, particleboard, fiberboard, etc. have been reported to be used in the production of container floors. The density of traditional multi-layer solid wood container floors is very high, generally around 800Kg / m 3 The above, especially the bamboo-wood composite container bottom plate which is currently used more, has a density of 900Kg / m 3 The weight of the container floor is increased, which greatly increases the transportation cost. Containers are used to transport goods. Due to the frequent grinding of forklift tires and the friction of cargo loading and unloading, the surface of the container floor will be severely worn. The mainstream of existing container floor panels is cloning wood surface painted with varnish or coated with impregnated paper, which does not have the function of wear resistance. The surface of the container floor is prone to large wear during cargo loading and unloading, and is forced to be replaced in advance, which reduces the service life of the container floor and increases the operation cost of the container. In order to reduce the transportation and operation costs of containers, it is increasingly urgent to improve the surface wear resistance and lightweight of container floors. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a new type of lightweight and wear-resistant container bottom plate, which solves the defects of the existing container bottom plate that the deadweight is too large and the service life is short, greatly improves the service life of the container bottom plate, and the deadweight of the entire bottom plate is relatively light, which is beneficial to reducing transportation costs.

[0005] (II) Technical solution

[0006] To achieve the above objectives, the present invention provides the following technical solutions: a new lightweight wear-resistant container bottom plate, which includes, from top to bottom, a wear-resistant layer, a COSB board, a first fiber reinforced layer, a high polymer honeycomb core board, a second fiber reinforced layer, a COSB board, and a bottom plate layer.

[0007] The wear-resistant layer, COSB board, first fiber reinforced layer, high polymer honeycomb core board, second fiber reinforced layer, COSB board and bottom plate layer are all bonded by quaternary resin adhesive, and the COSB board is respectively arranged between the wear-resistant layer and the first fiber reinforced layer, and between the second fiber reinforced layer and the bottom plate layer.

[0008] As a further solution of the present invention: the preparation method of the high polymer honeycomb core panel is as follows:

[0009] S1. Cutting: The staff first selects the high polymer honeycomb sheet and cuts the selected honeycomb sheet to a size that matches the size of the container bottom plate to be manufactured.

[0010] S2, roughening. The staff will use 180 mesh sanding belt to sand the upper and lower surfaces of the cut honeycomb board to roughen the honeycomb board.

[0011] As a further solution of the present invention: the preparation method of the COSB board is as follows:

[0012] S1, COSB board uses patented technology products, high-strength oriented structural board for container bottom plate.

[0013] S2. Sand the upper and lower surfaces of the COSB board with an 80-mesh sanding belt. The thickness of the COSB board is 7-8mm.

[0014] As a further solution of the present invention: the preparation method of the wear-resistant layer is as follows:

[0015] According to different requirements for the surface layer of the container bottom plate, the present invention is divided into: 1. Preparation of a wear-resistant layer of fast-growing wood veneer / impregnated woven bamboo mat + glued wood grain paper or glued solid color decorative paper; 2. Preparation of a wear-resistant layer of a cloned wood panel.

[0016] S1. Material processing:

[0017] 1. Take the prepared fast-growing wood for cutting and processing, cut the board into the specified size and dry it, deburr it and remove the resin; after sorting and sorting, obtain qualified fast-growing wood veneer with a thickness of 1.0-1.5mm.

[0018] The woven bamboo mat impregnated with quaternary resin glue is dried, cut to the specified area, burrs are removed, and sorted to obtain qualified impregnated bamboo mats.

[0019] 2. Take the prepared clone wood for cutting and processing. Cut the board into the specified size and dry it, deburr it and remove the resin. After sorting and sorting, obtain qualified clone panels with a thickness of 1.0-1.2mm.

[0020] S2. Polarization treatment:

[0021] 1. Cover the surface of a qualified fast-growing veneer / impregnated woven bamboo mat that has been dried to a moisture content of less than 12% with a piece of glued wood grain paper or glued solid color decorative paper, then perform electrostatic treatment to make it closely adhere to the surface and carry static electricity, and then spray shellac varnish on the surface of the glued wood grain paper or glued solid color decorative paper to obtain a wear-resistant layer prefabricated veneer 1.

[0022] 2. Perform electrostatic treatment on the qualified cloned wood panel which has been dried to a moisture content of less than 12% so that the surface is charged with static electricity, and then spray shellac varnish on the surface of the cloned wood panel to obtain the wear-resistant layer prefabricated veneer 2.

[0023] S3. Wear-resistant coating processing: Spray and adsorb the pre-prepared wear-resistant powder on the surface of the prefabricated veneer 1 or prefabricated veneer 2, and then spray Class 1 adhesive to fix the surface. The spraying amount is 150g / ㎡. After spraying and fixing, hot pressing is required. Place the prefabricated veneer 1 or prefabricated veneer 2 that has been sprayed with Class 1 adhesive on the hot press platform, control the hot pressing temperature between 100-150℃, and the pressure within the range of 1.2-1.5Mpa. Hot pressing for 2-3 minutes can form a wear-resistant, acid-resistant and alkali-resistant wear-resistant layer of the container bottom plate.

[0024] As a further solution of the present invention: the thickness of the high polymer honeycomb core panel is 9-11 mm.

[0025] As a further solution of the present invention: the bottom plate layer is a hardwood veneer such as Maraschino and Eucalyptus, with a thickness of 1.5-1.7 mm.

[0026] As a further solution of the present invention: the thickness of the first fiber reinforced layer and the second fiber reinforced layer are both set to 1.0-1.5 mm, and both are impregnated with a quaternary resin adhesive and pre-dried to form the fiber reinforced layer.

[0027] As a further solution of the present invention: the preparation method of the lightweight wear-resistant container bottom plate is as follows:

[0028] S1. First, apply quaternary resin adhesive on the COSB board with a coating amount of 150g / ㎡.

[0029] S2. Then lay the bottom plate layer on a stainless steel pad with a thickness of 4 mm, and then lay the bottom plate layer, COSB board, second fiber reinforced layer, high polymer honeycomb core board, first fiber reinforced layer, COSB board and wear-resistant layer in sequence from bottom to top.

[0030] S3. Then, hot pressing is performed. The temperature of the hot press is controlled between 120-130°C and the unit pressure is between 2.0-2.2Mpa. The staff places the stainless steel pad on the hot press plate and performs hot pressing on the laid material layer by operating the hot press. The hot pressing time is between 20-25 minutes.

[0031] S4. After the hot pressing is completed, the initial container bottom plate is manufactured by exhausting the pressure, and then the new lightweight and wear-resistant container bottom plate is manufactured through processes such as sawing, sanding, mortising and chamfering.

[0032] (III) Beneficial effects

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] 1. The new lightweight wear-resistant container bottom plate has a wear-resistant layer. Since wear-resistant powder is added to the wear-resistant layer on the surface of the container bottom plate, the ability to resist forklift grinding and cargo loading and unloading friction is improved, which greatly extends the service life of the surface layer of the container bottom plate.

[0035] 2. A lightweight high polymer honeycomb core board is placed on the core layer of the container bottom plate. The high polymer honeycomb core board has excellent shear and bending resistance, and its density is about 160Kg / m 3 , thickness 10mm, weight reduction of about 28.5%, two layers of high-strength oriented structural board (COSB board) for container bottom plate are placed inside the container bottom plate. COSB board has excellent mechanical strength, and the density of COSB board is about 750Kg / m 3 The total thickness is about 15mm, and the weight is reduced by about 3.3%. The first fiber reinforcement layer and the second fiber reinforcement layer are respectively arranged between the high polymer honeycomb core plate and the COSB plate inside the container bottom plate. While connecting the COSB plate and the high polymer honeycomb core plate, the tensile strength of the container bottom plate is greatly enhanced. Under the premise of ensuring the mechanical strength of the container bottom plate, the bottom plate is made thicker than the traditional multi-layer container bottom plate (density is 800Kg / m 3 The weight of the container bottom plate is about 30% lighter, which greatly reduces the weight of the container, which is beneficial to improving the freight capacity and reducing the freight cost.

[0036] 3. The wear-resistant layer panel formed by hot pressing has strong wear resistance and is also anti-slip, wash-free and acid-alkali resistant, thereby improving the service life and applicability of the container bottom plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic cross-sectional structure diagram of the present invention;

[0038] Figure 2 It is a schematic diagram of the structure of the high polymer honeycomb core panel of the present invention when viewed from above;

[0039] In the figure: 1 wear-resistant layer, 2 COSB board, 3 first fiber reinforced layer, 4 high polymer honeycomb core board, 5 second fiber reinforced layer, 6 bottom plate layer. DETAILED DESCRIPTION

[0040] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0041] like Figure 1-2As shown, the present invention provides a technical solution: a new lightweight wear-resistant container bottom plate, which includes, from top to bottom, a wear-resistant layer 1, a COSB board 2, a first fiber reinforced layer 3, a high polymer honeycomb core board 4, a second fiber reinforced layer 5, a COSB board 2, and a bottom plate layer 6.

[0042] The wear-resistant layer 1, COSB board 2, first fiber reinforced layer 3, high polymer honeycomb core board 4, second fiber reinforced layer 5, COSB board 2 and bottom plate layer 6 are all bonded by quaternary resin adhesive, and the COSB board 2 is respectively arranged between the wear-resistant layer 1 and the first fiber reinforced layer 3, and between the second fiber reinforced layer 5 and the bottom plate layer 6.

[0043] The preparation method of the high polymer honeycomb core plate 4 is as follows:

[0044] S1. Cutting: The staff first selects the high polymer honeycomb sheet and cuts the selected honeycomb sheet to a size that matches the size of the container bottom plate to be manufactured.

[0045] S2, roughening. The staff will use 180 mesh sanding belt to sand the upper and lower surfaces of the cut honeycomb board to roughen the honeycomb board.

[0046] The preparation method of COSB board 2 is as follows:

[0047] S1 and COSB board 2 are patented products, high-strength oriented structural board for container bottom plates.

[0048] S2. Sand the upper and lower surfaces of the COSB board with an 80-mesh sanding belt. The thickness of the COSB board is 7-8mm.

[0049] The preparation method of the wear-resistant layer 1 is as follows:

[0050] According to different requirements for the surface layer of the container bottom plate, the present invention is divided into: 1. Preparation of a wear-resistant layer 1 of fast-growing veneer / impregnated woven bamboo mat + glued wood grain paper or glued solid color decorative paper; 2. Preparation of a wear-resistant layer 1 of a cloned wood panel.

[0051] S1. Material processing:

[0052] 1. Take the prepared fast-growing wood for cutting and processing, cut the board into the specified size and dry it, deburr it and remove the resin; after sorting and sorting, obtain qualified fast-growing wood veneer with a thickness of 1.0-1.5mm.

[0053] The woven bamboo mat impregnated with quaternary resin glue is dried, cut to the specified area, burrs are removed, and sorted to obtain qualified impregnated bamboo mats.

[0054] 2. Take the prepared clone wood for cutting and processing. Cut the board into the specified size and dry it, deburr it and remove the resin. After sorting and sorting, obtain qualified clone panels with a thickness of 1.0-1.2mm.

[0055] S2. Polarization treatment:

[0056] 1. Cover the surface of a qualified fast-growing veneer / impregnated woven bamboo mat that has been dried to a moisture content of less than 12% with a piece of glued wood grain paper or glued solid color decorative paper, then perform electrostatic treatment to make it closely adhere to the surface and carry static electricity, and then spray shellac varnish on the surface of the glued wood grain paper or glued solid color decorative paper to obtain a wear-resistant layer prefabricated veneer 1.

[0057] 2. Perform electrostatic treatment on the qualified cloned wood panel which has been dried to a moisture content of less than 12% so that the surface is charged with static electricity, and then spray shellac varnish on the surface of the cloned wood panel to obtain the wear-resistant layer prefabricated veneer 2.

[0058] S3. Wear-resistant coating processing: Spray and adsorb the pre-prepared wear-resistant powder on the surface of the prefabricated veneer 1 or prefabricated veneer 2, and then spray Class 1 adhesive to fix the surface. The spraying amount is 150g / ㎡. After spraying and fixing, hot pressing is required. Place the prefabricated veneer 1 or prefabricated veneer 2 that has been sprayed with Class 1 adhesive on the hot press platform, control the hot pressing temperature between 100-150℃, and the pressure within the range of 1.2-1.5Mpa. Hot pressing for 2-3 minutes can form a wear-resistant, acid-resistant and alkali-resistant wear-resistant layer of the container bottom plate.

[0059] The thickness of the high polymer honeycomb core panel 4 is 9-11 mm.

[0060] The bottom plate layer 6 is a hardwood veneer such as Maraschino or Eucalyptus, with a thickness of 1.5-1.7 mm.

[0061] The thickness of the first fiber reinforced layer 3 and the second fiber reinforced layer 5 are both set to 1.0-1.5 mm, and both are fiber reinforced layers impregnated with a quaternary resin adhesive and pre-dried.

[0062] The preparation method of the lightweight wear-resistant container bottom plate is as follows:

[0063] S1. First, the oriented structural board 2 is coated with a quaternary resin adhesive with a coating amount of 150g / ㎡.

[0064] S2. Then lay the bottom plate layer 6 on a stainless steel pad with a thickness of 4 mm, and then lay the bottom plate layer 6, COSB board 2, second fiber reinforced layer 5, high polymer honeycomb core board 4, first fiber reinforced layer 3, COSB board 2 and wear-resistant layer 1 from bottom to top.

[0065] S3. Then, hot pressing is performed. The temperature of the hot press is controlled between 120-130°C and the unit pressure is between 2.0-2.2Mpa. The staff places the stainless steel pad on the hot press plate and performs hot pressing on the laid material layer by operating the hot press. The hot pressing time is between 20-25 minutes.

[0066] S4. After the hot pressing is completed, the initial container bottom plate is manufactured by exhausting the pressure, and then the new lightweight and wear-resistant container bottom plate is manufactured through processes such as sawing, sanding, mortising and chamfering.

[0067] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0068] The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. A method for preparing a novel lightweight and wear-resistant container bottom plate, characterized in that: The lightweight wear-resistant container bottom plate comprises, from top to bottom, a wear-resistant layer (1), a COSB plate (2), a first fiber-reinforced layer (3), a high polymer honeycomb core plate (4), a second fiber-reinforced layer (5), a COSB plate (2), and a bottom plate layer (6); The wear-resistant layer (1), the COSB board (2), the first fiber-reinforced layer (3), the high polymer honeycomb core board (4), the second fiber-reinforced layer (5), the COSB board (2), and the bottom plate layer (6) are all bonded together by a quaternary resin adhesive; the COSB board (2) is respectively arranged between the wear-resistant layer (1) and the first fiber-reinforced layer (3), and between the second fiber-reinforced layer (5) and the bottom plate layer (6); The preparation method of the high polymer honeycomb core plate (4) is as follows: S1. Cutting: The staff first selects a high polymer honeycomb sheet and cuts the selected high polymer honeycomb sheet to a size that matches the size of the container bottom plate to be manufactured; S2, roughening: the staff will use 180 mesh sanding belt to sand the upper and lower surfaces of the cut high polymer honeycomb sheet to roughen the honeycomb sheet; The preparation method of the COSB board (2) is as follows: S1, COSB board (2) is a high-strength oriented structural board for container bottom plate; S2. Sand the upper and lower surfaces of the COSB board with an 80-mesh sanding belt. The thickness of the COSB board is 7-8mm. The preparation method of the wear-resistant layer (1) is as follows: Prepare a wear-resistant layer of the clone wood panel according to the requirements of the surface layer of the container bottom plate (1); S1. Material processing: Take the prepared clone wood for cutting and processing, cut the board into the specified size and dry it, remove burrs and resin, and then sort and sort it to obtain qualified clone wood panels with a thickness of 1.0-1.2mm; S2. Polarization treatment: The qualified cloning wood panel dried to a moisture content of less than 12% is subjected to electrostatic treatment to make the surface of the panel carry static electricity, and then shellac varnish is sprayed on the surface of the cloning wood panel to obtain a wear-resistant layer prefabricated veneer; S3. Wear-resistant coating processing: Spray and adsorb the pre-prepared wear-resistant powder on the surface of the wear-resistant layer prefabricated veneer, then spray Class 1 adhesive to fix the shape, the spraying amount of adhesive is 150g / ㎡, and hot pressing is required after spraying and fixing. Place the wear-resistant layer prefabricated veneer sprayed with Class 1 adhesive on the hot press platform, control the hot pressing temperature between 100-150℃, and the pressure within the range of 1.2-1.5Mpa. Hot pressing for 2-3 minutes can form a wear-resistant, acid-resistant and alkali-resistant container bottom wear-resistant layer; The thickness of the high polymer honeycomb core plate (4) is 9-11 mm; The bottom plate layer (6) is a Maras hardwood veneer with a thickness of 1.5-1.7 mm; The thickness of the first fiber reinforced layer (3) and the second fiber reinforced layer (5) are both set to 1.0-1.5 mm, and both are impregnated with a quaternary resin adhesive and pre-dried.

2. The method for preparing a novel lightweight wear-resistant container bottom plate according to claim 1, characterized in that: The preparation method of the lightweight wear-resistant container bottom plate is as follows: S1. First, the COSB board (2) is coated with a quaternary resin adhesive at a coating amount of 150 g / m2; S2, then laying the bottom plate layer (6) on a stainless steel backing plate with a thickness of 4 mm, and laying the bottom plate layer (6), the COSB plate (2), the second fiber reinforced layer (5), the high polymer honeycomb core plate (4), the first fiber reinforced layer (3), the COSB plate (2) and the wear-resistant layer (1) in sequence from bottom to top; S3, then hot pressing is performed, the temperature of the hot press is controlled between 120-130℃, the unit pressure is between 2.0-2.2Mpa, the staff places the stainless steel pad on the hot press plate, and performs hot pressing on the laid material layer by operating the hot press, and the hot pressing time is between 20-25 minutes; S4. After the hot pressing is completed, the initial container bottom plate is manufactured by exhausting the pressure, and then the new lightweight and wear-resistant container bottom plate is manufactured through sawing, sanding, mortising and chamfering processes.

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