What is the production procedure for laminate flooring

A brief introduction to the basic knowledge of laminate flooring: what is the structural composition of laminate flooring?

Laminate flooring has 4 layers of structure, which are wear-resistant layer, decorative layer, substrate layer, and balance layer. After a high-temperature press (temperature 100-

200 degrees, pressure 1000-3500 tons) pressed and formed, and then cut and grooved into finished products.

1 Wear layer.

The composition is aluminum oxide, which is hard and wear-resistant. Determine the wear resistance level of laminate flooring.

At present, the "abrasion resistance class" is used in Europe to define the wear resistance of laminate flooring. Household is divided into , represented.

Household light, moderate, and heavy use places; The common division is , which stands for common light, moderate, and heavy use.

Location; The commonly used symbols are: AC1 (21-22), AC2 (21-22-23), AC), and AC4

21-22-23，31-32）、ac5（21-22-23，31-32-33）。

It can be seen that flooring with AC2 or higher should be used for household use, and flooring with AC3 or higher should be used for public use.

At present, most of the poor floors on the market are AC1 and AC2 grades, and some of them will have surface abrasion when used in shopping malls and other places.

Phenomenon. A better floor can generally reach the use level of AC3, which can fully meet the needs of the family.

In addition, the higher the use grade and wear resistance grade (i.e., the higher the number of wear resistance revolutions), the thicker the wear resistance layer and the gloss of the floor surface.

and the worse the definition, it is only suitable for high-volume (such as shopping malls, stations) and other places. So it's not that the more wear-resistant, the better.

The national standard is 6000 rpm for household use and 9000 rpm for public use (wear-resistant rpm, which is a parameter still in use in China).

2. Decorative layer:

Computer design pattern, through printing, dipping melamine resin, to obtain a variety of laminate wood grain paper.

At present, domestic wood grain paper and imported wood grain paper are used for flooring on the market.

Difference: Compared with domestic wood grain paper, imported wood grain paper has better clarity, layering and texture, and is also UV resistant.

The line ability is strong, and the sunlight does not change color for a long time.

3 .Substrate layer.

High-density fiberboard is generally used in the production of laminate flooring.

High-density fiberboard is made of wood after peeling and removing leaves, and beating into wood fiber, adding a certain amount of glue, after high temperature.

Wood-based panels made by pressing, good high-density boards have the following characteristics: environmental protection, stability, and no deformation.

The "environmental performance" and "stability performance" of laminate flooring are determined by the substrate layer. Laminate flooring on the market is in.

The use of substrates is also very messy, and there are many inferior ones. At the end of 2004, more than 60% of the sampling inspection by the Guangdong Technical Supervision Bureau was unqualified and used.

Substandard substrates have a lot to do with it.

4 Balance layer.

The balance layer is also composed of melamine resin impregnated paper, which plays a role in preventing deformation and moisture. , partly inexpensive compounds.

In order to reduce costs, laminate flooring uses kraft paper as a balance layer, which is easy to deform. The simple way to tell is to look.

Whether the back of the plate is pure and free of color difference.

a. Hardwood parquet production process: by several or more layers criss-crossed, after insect-proof and mildew-proof treatment of pine veneer as the base material, the base layer is pasted with 5mm solid wood veneer, through the dust-free paint coating operation evenly on the surface and tenon after the finished wood floor.

b. Features: not easy to deform, firm and durable, ultraviolet curing is more wear-resistant, moisture-proof and flame retardant, warm and insulated, and insect-proof.

c. Common sense of purchase and maintenance:

1. The number of surface wear-resistant revolutions.

This indicator is selected according to the use occasion, which is generally about 6,000 rpm for home use and about 10,000 rpm for public places. There are four main types of laminate flooring: the floor with an aluminum oxide content of about 30g per square meter has an abrasion resistance of about 4000 rpm; The wear resistance of the floor with a content of about 38g is about 5000 rpm; The wear resistance of about 44g is about 9000 rpm; The resistance of about 62g is about 19,000 rpm.

2. Free formaldehyde content.

Laminate flooring contains a certain amount of formaldehyde in the adhesive, excessive formaldehyde is harmful to the human body, and the human body will be carcinogenic if it is in an environment with high formaldehyde concentration for a long time. China has promulgated mandatory standards for formaldehyde concentrations in public air, which do not exceed. For the testing method of laminate flooring, the state adopts the "perforation extraction method" to stipulate that it does not exceed 30mg 100g, and it is best to be below 9mg 100g.

3. Expansion of water absorption thickness.

The higher this index, the easier it is for the floor to expand, and the state stipulates that this index is within 2%.

4. Internal bonding strength.

The greater the strength, the tighter the bond between the layers of the wood floor, and the state stipulates that this index should reach more than 1map.