A method for producing a palm fiber flake board

Abstract

The application discloses a kind of palm fiber shaving board production method, belong to the technical field of shaving board production, including the following steps, S1. making coarse shaving and fine shaving;S2. with palm fiber to obtain coarse palm fiber silk and fine palm fiber particle;S3. glue spraying;S4. drying;S5. pre-pressing: the coarse shaving, fine shaving, coarse palm fiber silk and fine palm fiber particle of dry completion are sequentially pre-pressed according to fine palm fiber particle→fine shaving→coarse palm fiber silk→coarse shaving→coarse palm fiber silk→fine shaving→fine palm fiber particle, and continuously pre-pressing;S6. hot-pressing to obtain product.The palm fiber is applied to the shaving board in the application, the palm fiber can be comprehensively utilized in the production process of mattress, the resource waste is reduced, the strength of the shaving board is improved under the condition that the amount of wood is reduced, and the shaving board is endowed with more functions, which can provide wider application prospect for the resource utilization of palm fiber.

Description

Technical Field

[0001] This invention relates to the field of particleboard production, and in particular to a method for producing palm fiber particleboard. Background Technology

[0002] Palm trees are widely distributed monocotyledonous plants. Growing across a vast area of ​​the world, palms can serve as raw materials for local fibers and waxes. Ancient people used the leaf sheath fibers of palm trees to weave ropes. Chinese Patent 90100464.2 discloses a method for producing plant fiber mattresses. Palm fiber filaments are curled, blown into a three-dimensional distribution by airflow, and then glued together to bond the nodes between the filaments, resulting in an elastic sheet of plant fiber. This elastic sheet is then stacked to form the mattress. Existing production processes involve first producing an elastic sheet slightly wider than the mattress width, then stacking the elastic sheet in the direction it came from the production line to form the mattress core. This core is then hot-pressed, vulcanized, and finally cut to the edges.

[0003] To further utilize palm fiber resources and explore the necessity of developing new palm fiber products, Chinese Patent 201710338166.8 discloses a method for manufacturing palm fiber particleboard, comprising the following steps: First, preparing inorganic adhesive; second, preparing a composite modified organic cementitious material; third, mixing and stirring the materials evenly to obtain the adhesive; fourth, drawing palm fiber into individual filaments of different lengths; fifth, allowing the filaments to absorb the adhesive evenly and pressing them into palm fiber particleboard of different thicknesses; sixth, cold-pressing the entire stack of palm fiber particleboard; seventh, after cold-pressing and shaping, hot-pressing the palm fiber particleboard; and eighth, eliminating internal stress. The palm fiber particleboard produced by this invention has overall flame-retardant and termite-proof properties and is suitable for outdoor use. This product is a green and environmentally friendly board material with excellent water resistance, fire resistance, and weather resistance. This type of particleboard made from pure palm fiber lacks a large wood shaving as a basic framework, resulting in insufficient board strength. When grooving, fixing, or other processing is performed on the board, the fiber strands at the cut edges are prone to breakage, making its performance less than ideal. Summary of the Invention

[0004] The purpose of this invention is to provide a method for producing palm fiber particleboard. This method not only utilizes palm fiber resources but also improves the overall performance of the particleboard, including its strength and usability, making it natural, healthy, and environmentally friendly.

[0005] The technical solution of this invention:

[0006] A method for producing palm fiber particleboard includes the following steps:

[0007] S1. To make coarse and fine wood shavings;

[0008] S2. Coarse palm fiber filaments and fine palm fiber granules are produced from palm fiber.

[0009] S3. Spraying adhesive: Spray adhesive onto the resulting coarse wood shavings, fine wood shavings, coarse palm fiber filaments, and fine palm fiber particles. The amount of adhesive sprayed is 10-25% of the raw materials by weight.

[0010] S4. Drying: The raw materials after spraying adhesive are dried by drum drying at a temperature of 160-180℃ until the moisture content is 3%-5%;

[0011] S5. Laying and pre-compacting: Lay the dried coarse wood shavings, fine wood shavings, coarse palm fiber filaments and fine palm fiber particles in the following order: fine palm fiber particles → fine wood shavings → coarse palm fiber filaments → coarse wood shavings → coarse palm fiber filaments → fine wood shavings → fine palm fiber particles, and perform continuous pre-compacting.

[0012] S6. Hot pressing: Continuous hot pressing is adopted, with a hot pressing pressure of 3-3.5MPa / mm, a hot pressing time of 40-60min, and a hot pressing temperature of 180-220℃. After hot pressing, cooling, sanding, and edge trimming are performed to obtain particleboard products.

[0013] In step S4, during drying, coarse wood shavings and coarse palm fiber filaments are dried and mixed together in a drum to obtain a mixture of wood shavings and fiber filaments. In step S5, the mixture is laid out in the following order: fine palm fiber particles → fine wood shavings → mixture of wood shavings and fiber filaments → fine wood shavings → fine palm fiber particles.

[0014] The coarse palm fiber filaments are 10-100 mm in diameter.

[0015] The fine palm fiber particles are 200-650 mesh.

[0016] The coarse palm fiber filaments and fine palm fiber particles are prepared from waste materials of palm fiber elastic mattresses or natural palm fibers.

[0017] The coarse wood shavings are made by cutting moist beech wood into 200-300mm segments, and then milling them radially into large shavings using a milling machine. The coarse wood shavings are 100-200mm long, 5-50mm wide, and 0.1-0.2mm thick.

[0018] The fine wood shavings are produced by processing the coarse wood shavings into fine wood shavings using a wood shaving machine. The fine wood shavings have the following dimensions: length 2-20mm, width 1-10mm, and thickness 0.01-0.1mm.

[0019] In step S3, the adhesive used is natural latex, and 3%-5% calcium carbonate by weight of the dry matter of the latex is added to the natural latex as a curing agent.

[0020] In step S5, when laying the palm fiber in the order of fine palm fiber particles → fine shavings → coarse palm fiber filaments → coarse shavings → coarse palm fiber filaments → fine shavings → fine palm fiber particles, the ratio of palm fiber particles: fine shavings: coarse palm fiber: coarse shavings by weight is 2-3:1.5-2.5:1.5-2.5:1.

[0021] In step S5, when laying the shavings in the order of fine palm fiber particles → fine wood shavings → mixture of wood shavings and fiber filaments → fine wood shavings → fine palm fiber particles, the ratio of palm fiber particles: fine wood shavings: coarse palm fiber: coarse wood shavings by weight is 2-3:1.5-2.5:0.8-1.2:1.5.

[0022] The beneficial effects of this invention are: This invention applies palm fiber to particleboard, which can make comprehensive use of palm fiber waste in the mattress production process, or utilize palm fiber that is of poor quality and cannot be used for mattress production, thereby reducing resource waste;

[0023] Natural rubber is used as an adhesive in the production process, which is formaldehyde-free. The entire board is natural, healthy and environmentally friendly, which is more in line with the development needs of green and environmentally friendly buildings.

[0024] The addition of palm fiber, due to its honeycomb-like hollow structure, can play a role in sound insulation. The technical solution of this invention uses coarse palm fiber filaments as the middle layer of particleboard alone, or mixed with coarse wood chips as the middle layer, forming a fiber-reinforced structure with the coarse wood chips. This can increase the strength, toughness, and stability of the particleboard, and improve its flexural and compressive strength. Using fine palm fiber particles as the outermost layer of the board can improve the board's corrosion resistance and moisture resistance.

[0025] This invention can improve the strength of particleboard and give it more functions while reducing the amount of wood used, thus providing a broader prospect for the resource utilization of palm fiber. Detailed Implementation

[0026] The present invention will be further described below with reference to embodiments, but these embodiments are not intended to limit the scope of the invention.

[0027] Example 1.

[0028] A method for producing palm fiber particleboard includes the following steps:

[0029] S1. To make coarse and fine wood shavings;

[0030] S2. Coarse palm fiber filaments and fine palm fiber granules are produced from palm fiber.

[0031] S3. Spraying adhesive: Spray adhesive onto the resulting coarse wood shavings, fine wood shavings, coarse palm fiber filaments, and fine palm fiber particles. The amount of adhesive sprayed is 10-25% of the raw materials by weight.

[0032] S4. Drying: The raw materials after spraying adhesive are dried by drum drying at a temperature of 160-180℃ until the moisture content is 3%-5%;

[0033] S5. Laying and pre-compacting: Lay the dried coarse wood shavings, fine wood shavings, coarse palm fiber filaments and fine palm fiber particles in the following order: fine palm fiber particles → fine wood shavings → coarse palm fiber filaments → coarse wood shavings → coarse palm fiber filaments → fine wood shavings → fine palm fiber particles, and perform continuous pre-compacting.

[0034] S6. Hot pressing: Continuous hot pressing is adopted, with a hot pressing pressure of 3-3.5MPa / mm, a hot pressing time of 40-60min, and a hot pressing temperature of 180-220℃. After hot pressing, cooling, sanding, and edge trimming are performed to obtain particleboard products.

[0035] In step S4, during drying, coarse wood shavings and coarse palm fiber filaments are dried and mixed together in a drum to obtain a mixture of wood shavings and fiber filaments. In step S5, the mixture is laid out in the following order: fine palm fiber particles → fine wood shavings → mixture of wood shavings and fiber filaments → fine wood shavings → fine palm fiber particles.

[0036] The coarse palm fiber filaments are 10-100 mm in diameter.

[0037] The fine palm fiber particles are 200-650 mesh.

[0038] The coarse palm fiber filaments and fine palm fiber particles are prepared from waste materials of palm fiber elastic mattresses or natural palm fibers.

[0039] The coarse wood shavings are made by cutting moist beech wood into 200-300mm segments, and then milling them radially into large shavings using a milling machine. The coarse wood shavings are 100-200mm long, 5-50mm wide, and 0.1-0.2mm thick.

[0040] The fine wood shavings are produced by processing the coarse wood shavings into fine wood shavings using a wood shaving machine. The fine wood shavings have the following dimensions: length 2-20mm, width 1-10mm, and thickness 0.01-0.1mm.

[0041] In step S3, the adhesive used is natural latex, and 3%-5% calcium carbonate by weight of the dry matter of the latex is added to the natural latex as a curing agent.

[0042] Example 2

[0043] A method for producing palm fiber particleboard includes the following steps:

[0044] S1. To make coarse and fine wood shavings;

[0045] S2. Coarse palm fiber filaments and fine palm fiber granules are produced from palm fiber.

[0046] S3. Spraying adhesive: Spray adhesive onto the resulting coarse wood shavings, fine wood shavings, coarse palm fiber filaments, and fine palm fiber particles. The amount of adhesive sprayed is 15% of the raw materials by weight.

[0047] S4. Drying: The raw materials after spraying adhesive are dried by drum drying at 170℃ until the moisture content is 4%;

[0048] S5. Laying and Pre-compression: Lay the dried coarse wood shavings, fine wood shavings, coarse palm fiber filaments, and fine palm fiber particles in the following order: fine palm fiber particles → fine wood shavings → coarse palm fiber filaments → coarse wood shavings → coarse palm fiber filaments → fine wood shavings → fine palm fiber particles, and perform continuous pre-compression; by weight, the ratio of palm fiber particles: fine wood shavings: coarse palm fiber: coarse wood shavings is 2-3:1.5-2.5:1.5-2.5:1.

[0049] S6. Hot pressing: Continuous hot pressing is adopted, with a hot pressing pressure of 3.2MPa / mm, a hot pressing time of 50min, and a hot pressing temperature of 200℃. After hot pressing, cooling, sanding, and edge trimming are performed to obtain particleboard products.

[0050] The coarse wood shavings are made by cutting moist beech wood into segments of about 250mm, and then milling them radially into large shavings using a milling machine. The coarse wood shavings are 120-150mm long, 10-40mm wide, and 0.1-0.2mm thick.

[0051] The fine wood shavings are produced by processing the coarse wood shavings into fine wood shavings using a wood shaving machine. The fine wood shavings have the following dimensions: length 5-15mm, width 3-8mm, and thickness 0.01-0.1mm.

[0052] In step S3, the adhesive used is natural latex, and 4% calcium carbonate by weight of the dry matter of the latex is added to the natural latex as a curing agent.

[0053] Example 3

[0054] A method for producing palm fiber particleboard includes the following steps:

[0055] S1. To make coarse and fine wood shavings;

[0056] S2. Coarse palm fiber filaments and fine palm fiber granules are produced from palm fiber.

[0057] S3. Spraying adhesive: Spray adhesive onto the resulting coarse wood shavings, fine wood shavings, coarse palm fiber filaments, and fine palm fiber particles. The amount of adhesive sprayed is 20% of the raw materials by weight.

[0058] S4. Drying: The raw materials after spraying adhesive are dried in a drum at a temperature of 165℃ until the moisture content is 4%. During drying, coarse wood shavings and coarse palm fiber filaments are put into the drum for drying and mixed together to obtain a mixture of wood shavings and fiber filaments.

[0059] S5. Pre-compacting: The dried wood shavings and fiber mixture, fine wood shavings and fine palm fiber particles are laid in the following order: fine palm fiber particles → fine wood shavings → wood shavings and fiber mixture → fine wood shavings → fine palm fiber particles. By weight, the ratio of palm fiber particles: fine wood shavings: coarse palm fiber: coarse wood shavings is 2.5:2:1:1.5.

[0060] S6. Hot pressing: Continuous hot pressing is adopted, with a hot pressing pressure of 33MPa / mm, a hot pressing time of 45min, and a hot pressing temperature of 190℃. After hot pressing, cooling, sanding, and edge trimming are performed to obtain particleboard products.

Claims

1. A method for producing palm fiber particleboard, characterized in that: Includes the following steps, S1. To make coarse and fine wood shavings; S2. Coarse palm fiber filaments and fine palm fiber granules are produced from palm fiber. S3. Spraying adhesive: Spray adhesive onto the resulting coarse wood shavings, fine wood shavings, coarse palm fiber filaments, and fine palm fiber particles. The amount of adhesive sprayed is 10-25% of the raw materials by weight. S4. Drying: The raw materials after spraying adhesive are dried by drum drying at a temperature of 160-180℃ until the moisture content is 3%-5%; S5. Laying and pre-compacting: Lay the dried coarse wood shavings, fine wood shavings, coarse palm fiber filaments and fine palm fiber particles in the following order: fine palm fiber particles → fine wood shavings → coarse palm fiber filaments → coarse wood shavings → coarse palm fiber filaments → fine wood shavings → fine palm fiber particles, and perform continuous pre-compacting. S6. Hot pressing: Continuous hot pressing is adopted, with a hot pressing pressure of 3-3.5MPa / mm, a hot pressing time of 40-60min, and a hot pressing temperature of 180-220℃. After hot pressing, cooling, sanding, and edge trimming are performed to obtain particleboard products. In step S4, during drying, coarse wood shavings and coarse palm fiber filaments are dried and mixed together in a drum to obtain a mixture of wood shavings and fiber filaments. In step S5, the mixture is laid out in the following order: fine palm fiber particles → fine wood shavings → mixture of wood shavings and fiber filaments → fine wood shavings → fine palm fiber particles. The coarse palm fiber filaments are 10-100 mm in size, and the fine palm fiber particles are 200-650 mesh. In step S3, the adhesive used for spraying is natural latex, and 3%-5% calcium carbonate by weight of the dry matter of the natural latex is added as a curing agent.

2. The method for producing palm fiber particleboard according to claim 1, characterized in that: The coarse palm fiber filaments and fine palm fiber particles are prepared from waste materials of palm fiber elastic mattresses or natural palm fibers.

3. The method for producing palm fiber particleboard according to claim 1, characterized in that: The coarse wood shavings are made by cutting moist beech wood into 200-300mm segments, and then milling them radially into large shavings using a milling machine. The coarse wood shavings are 100-200mm long, 5-50mm wide, and 0.1-0.2mm thick.

4. The method for producing palm fiber particleboard according to claim 3, characterized in that: The fine wood shavings are produced by processing the coarse wood shavings into fine wood shavings using a wood shaving machine. The fine wood shavings have the following dimensions: length 2-20mm, width 1-10mm, and thickness 0.01-0.1mm.

5. The method for producing palm fiber particleboard according to claim 1, characterized in that: In step S5, when laying the palm fiber in the order of fine palm fiber particles → fine shavings → coarse palm fiber filaments → coarse shavings → coarse palm fiber filaments → fine shavings → fine palm fiber particles, the ratio of palm fiber particles: fine shavings: coarse palm fiber: coarse shavings by weight is 2-3:1.5-2.5:1.5-2.5:

1.

6. The method for producing palm fiber particleboard according to claim 1 or 2, characterized in that: In step S5, when laying the shavings in the order of fine palm fiber particles → fine wood shavings → mixture of wood shavings and fiber filaments → fine wood shavings → fine palm fiber particles, the ratio of palm fiber particles: fine wood shavings: coarse palm fiber: coarse wood shavings by weight is 2-3:1.5-2.5:0.8-1.2:1.5.