CN1175965C - Manufacturing method of environment-friendly wood floor - Google Patents

Abstract

The invention discloses a method for manufacturing an environment-friendly super-strong wood floor by using waste three-level wood, fruit tree branches, cotton stalks and other crop straws as raw materials. The wear-resistant layer is AI₂O₃The concave-convex groove and tongue of the processed environment-friendly super-strong wood floor are good in forming, high in precision, free of groove and tongue cracking and free of burrs, high-precision buckling of each floor in installation is guaranteed, joints of the floor after installation are smooth, smooth and attractive, and produced products are wear-resistant, flame-retardant, mothproof, dampproof, anti-corrosion, anti-static, free of deformation, arching and crack. No need of painting and waxing, convenient cleaning and the like. The wood-plastic composite floor is large in elasticity and rich in foot feel, has the texture and color tone of natural logs, is easily matched with other indoor decorations, gives people warm, comfortable and nature-returning feelings, is an ideal substitute product of the logs and stones at the present time, and achieves the advanced level of similar products at home and abroad as the surface wear resistance value reaches 18000 turns through testing.

Description

Manufacturing method of environmentally friendly wooden floor

1. Technical field

The invention belongs to the field of decoration and relates to a method for manufacturing a wooden floor, in particular to a method for manufacturing an environmentally friendly wooden floor using waste tertiary wood, fruit tree branches, cotton stalks and other crop straws as raw materials.

2. Background technology

At present, domestic equipment does not have the conditions and capabilities to produce laminate flooring. The problem of multi-cylinder synchronization of large hydraulic machines cannot be solved, and the hot pressing plate is deformed, and the temperature cannot meet the requirements. The knives for planing the concave and convex grooves of the floor cannot be solved. Most of the manufacturers producing laminate flooring at home and abroad are Sino-foreign joint venture manufacturers. If they use imported German equipment for the production of laminate flooring, or directly purchase foreign products, the introduction of investment amounts to hundreds of millions of yuan, and the knives used in the equipment all rely on Imports are expensive, and some knives cost hundreds of thousands of yuan, and the delivery period is long, making it inconvenient to sharpen the knives.

3. Contents of the invention

In view of the defects or deficiencies in the above-mentioned prior art, the object of the present invention is to provide a method for manufacturing environmentally friendly wood flooring, which uses waste and old tertiary wood, fruit tree branches, cotton stalks and other crop straws as raw materials, and utilizes domestic It is produced by advanced equipment, and its products can reach the advanced level of similar products in the world.

In order to achieve the above object, the technical solution adopted in the present invention is that the manufacturing method of this environmental protection wooden floor is carried out according to the following steps:

1) Raw material preparation

① waste tertiary wood and fruit branches, cotton stalks, or crop straw

②Phenolic resin glue

2) Cooking

Put waste tertiary wood and fruit branches, cotton stalks, or crop straws into the pool, and use hot steam to cook at a temperature of 70°C to 80°C for 24 hours;

3) to dry or tumble dry

Dry the cooked raw materials naturally or at a temperature of 60°C to 80°C for 18h to 24h, so that the moisture content does not exceed 8%;

4) Smash

Put the dried raw materials into the pulverizer to form coarse powder and fine powder to form fine materials of 80 mesh to 120 mesh;

5) Ingredients

Stir the pulverized fine material and phenolic resin glue in a ratio of 8:1 for later use;

6) Substrate forming

Put the prepared ingredients above into a pressing machine for pressing for 30 minutes, the pressure is 1Mpa/cm ² , and the temperature is kept between 100°C and 110°C;

7) High temperature hot pressing upper surface layer and balance layer

The hot-pressed substrate has a surface layer and a wear-resistant layer on the upper surface, and a balance layer on the lower surface; the pressure is 1.2Mpa/cm ² , the time is 60s-70s; the temperature is 195°C-200°C, and the wear-resistant layer is Al ₂ O ₃ material;

8) Grooving

According to the specifications of the laminate flooring, the convex groove and the groove are processed at one time;

9) Grading and inspection

Classification and inspection according to technical conditions;

10) Finished product packing

Pack and pack the graded and inspected laminate flooring.

The laminated wood floor prepared by the present invention, because the surface layer is an Al ₂ O ₃ wear-resistant layer, makes the product achieve wear-resistant and flame-retardant, moth-proof, moisture-proof, corrosion-proof, anti-static, no deformation, no arching, and no cracks. No need to paint and wax, easy to clean and so on. It has great elasticity and a sense of footing. It has the texture and color of natural logs. It is easy to match with other indoor decorations harmoniously, giving people a feeling of warmth, comfort and returning to nature. It is the most ideal latent product of logs and stones in contemporary times. After testing, the wear-resistant value of the surface reaches 18,000 revolutions, reaching the level of similar products at home and abroad, and the wear-resistant value is more than 20 times that of solid wood flooring.

4. Specific implementation

The present invention will be described in further detail below in conjunction with the specific examples given by the inventor.

According to the technical scheme of the present invention, the raw materials of this product are crop straws such as waste and old tertiary wood, fruit tree branches, cotton stalks, etc., and the raw material cost is low. Its technological process is as follows:

Raw shaking preparation→cooking→drying→crushing→ingredients→hot pressing (substrate forming)→high temperature hot pressing upper surface layer, wear-resistant layer and balance layer→grooving→grading→packing→finished product.

The hot-pressed plate adopts high-temperature-resistant castings, which do not deform when the temperature reaches 300°C. The problem of hydraulic multi-group synchronization is solved, and the pressure, temperature, and time are automatically controlled to make the surface of the product smooth, clean and free of deformation.

During the production process, high temperature, high pressure, and short time are used, all of which are automatically controlled by instruments. After one adjustment, it can automatically run, which greatly improves production efficiency and ensures that the product surface is smooth, smooth, and consistent in thickness. In production, the temperature of hot pressing is 195°C-200°C, and the pressure is 1.2Mpa/cm ² . The time is 60s ~ 70s.

Because the surface of laminate flooring is Al ₂ O ₃ transparent crystal film, it is hard and brittle, and it will break and burr after being impacted, and there are installation grooves on the four sides.

In order to ensure the precise fastening between each floor, it is required that the grooves have better precision (0.01cm-0.02cm) and better surface quality (no damage, no burrs), so the requirements for processing tools are very high.

The invention adopts synthetic diamond composite material (PCD) to make cutters, and processes them on a high-precision machine tool, so that the concave-convex groove precision of the product can reach 0.01cm-0.02cm. The shape of the processing tool is designed to correspond to the shape of the concave-convex groove. In order to reduce the impact during operation, a forming milling cutter with multiple cutting tools is used for one-time processing.

In order to ensure the high quality of groove and groove, the geometric parameters of the tool including the diameter of the milling cutter, the number of tools, the shape of the cutting edge, etc. are very important.

After many tests, the number of blades is better to be 6-8, and the diameter of the milling cutter is 120-130cm (for domestic equipment) and the thickness is 10cm-11cm. In order to ensure the ideal processing effect of the blade, the inner diameter of the milling cutter is ф16mm, outer diameter is ф120mm. The wedge angle of the rake angle and the rear angle is preferably 50°-70°.

Because the PCD tool is an assembly, it is required that the three aspects of each tool head and the area on both sides should maintain a high precision of not more than 0.01cm-0.02cm, and achieve a very balanced operation. For this reason, in the production and processing of the cutting tool, the applicant specially designed a high-precision special forming mold and processed it once on a special microcomputer control machine tool to ensure that the precision of the cutting tool reached 0.01cm-0.02cm. At the same time, the up, down, front and back positions of the milling cutter can be adjusted, which achieves convenient adjustment and easy tool change, thus ensuring the uniform size and specification of the product.

In order to increase the cutting speed, reduce the cutting thickness, reduce the impact of the cutting edge, and improve the service life of the tool, the technical measures of high-speed cutting and low-speed feed are adopted to achieve the ideal processing effect.

It has been proved by many tests that the general milling cutter speed and feed speed should be 1000r/min: 1m/min.

The manufacturing method of the environment-friendly wooden floor of the present invention is convenient to adjust during product processing, and the concave-convex shape of the groove is formed at one time, so that the surface of the product is smooth, the shape of the groove is well maintained, and the high-precision fastening of each floor is guaranteed.

Since the surface layer is an AI ₂ O ₃ wear-resistant layer, the product is wear-resistant and flame-retardant, moth-proof, moisture-proof, corrosion-resistant, anti-static, non-deformable, arch-free, and crack-free. No need to paint and wax, easy to clean and so on. It has the texture and color of natural logs, and is easy to match with other room decorations harmoniously, giving people a feeling of warmth, comfort, and returning to nature. It is the most ideal latent product of logs and stones in contemporary times. After testing, the wear-resistant value of the surface reaches 18,000 revolutions, reaching the level of similar products at home and abroad, and the wear-resistant value is more than 20 times that of solid wood flooring.

See the table below for the comparison of wear resistance values: Various wooden floors laminate flooring wooden floor Use of wear resistance 7000-18000 450-750

The pressing equipment and the improved cutting tool of the present invention are simple and good in manufacturability, and solve difficult problems in the production of reinforced wood flooring. The concave-convex groove-and-groove forming standard is processed with high precision, and the groove has no cracks and burrs, which ensures the high-precision fastening of each floor during installation, making the joints of the floor after installation flat, smooth and beautiful, reaching the domestic The advanced level of similar products at home and abroad, and greatly reduces equipment investment and product costs. Adopt the present invention, according to equipment investment cost, also can manage respectively as the large, medium and small-scale enterprise of investment approximately 5 million, 2 million and 500,000.

Claims (1)

1. the manufacture method of an environment-friendly wood floor, carry out according to the following steps:

1) raw material are prepared

1. the straw of waste and old 3rd grade timber and fruit tree branch, cotton stalk or crops

2. phenolic resin glue

2) boiling

The straw of waste and old 3rd grade timber and fruit tree branch, cotton stalk or crops is put into the pond, adopt heat steam to carry out boiling, temperature is 70 ℃～80 ℃, and the time is 24h;

3) dry or dry

To dry naturally through the raw material of boiling or, make its moisture content be no more than 8% with 60 ℃～80 ℃ temperature oven dry 18h～24h;

4) pulverize

To insert pulverizer through the raw material of oven dry and behind meal, fine powder, form 80 orders～120 purpose fineves;

5) batching

Fines and the phenolic resin glue pulverized is stand-by in 8: 1 ratio stirring;

6) substrate forming

The above-mentioned batching for preparing inserted in the pressing machine suppress, time 30min, pressure are 1Mpa/cm ², temperature remains between 100 ℃～110 ℃;

7) elevated temperature heat presses top layer and balance layer

With hot-forming substrate, upper surface is upper epidermis, wearing layer respectively, balance layer on the lower surface; Its pressure is 1.2Mpa/cm ², time 60s～70s; Temperature is 195 ℃～200 ℃, and the wearing layer material is Al ₂O ₃

8) channeling

Press the specification of laminated flooring, time processing goes out tongue and groove;

9) classification, check

Carry out classification and check by technical conditions;

10) finished product vanning

With the laminated flooring packing vanning after classification and the check.