Plywood plywood knowledge

It is believed that many people have noticed that many furniture in their own homes are not made of solid wood. Those who look closely will find that many furniture plates are plywood made of many layers of wood bonded together. Among them, the plywood is one of the most common and most widely used plywood. Then do you usually understand the plywood? Today Xiaobian will give you some information about the plywood.

The advantages and disadvantages of the plywood

1, advantages

The plywood is made of different veneer sheets and pressed into paste, so the plywood can save a lot of wood. Today, the lack of forest resources, the plywood is undoubtedly a very good selection of plates. The plywood is made of three-layer plates. Compared with other single-layer plates of the same thickness, the plywood often has greater strength, and its load-bearing capacity and bending resistance are relatively strong, and the heat insulation and the sealing are good.

2. Disadvantages

Since the plywood needs to be glued, it is inevitably necessary to use a glue made of a chemical material to pave the way for the safety of the plywood. The binder contains formaldehyde, so the formaldehyde content of the plywood has become an important factor to endanger people's health. In addition, some paints and other products in the furniture manufacturing process also contain formaldehyde, so everyone buys furniture made of plywood or plywood. Pay attention to formaldehyde content.

The safety issue of plywood

The plywood is made of three layers of wood veneer. Due to the use of formaldehyde-containing binders, furniture made of plywood releases formaldehyde. In addition to causing respiratory and nervous system diseases such as cough, sore throat, chest tightness, dizziness, nausea, weakness, difficulty breathing, lethargy and other symptoms, formaldehyde can also cause cancers such as nasal cancer, throat cancer, skin cancer, and leukemia. occur. The release time of toxic gases is generally 1-10 years, especially in the first year. During this period, toxic gases evaporate quickly, release high amounts, and cause serious harm to the human body.

Since indoor formaldehyde and other harmful gases can harm human health, it is best not to purchase furniture made of synthetic plates, especially families with children. If you already have a piece of furniture in your home and you feel that the smell is particularly strong, it is best to have a qualified monitoring agency to monitor whether the indoor air environment is up to standard. Photocatalyst products can also be used to reduce the harm caused by harmful gases.

Plywood selection tips

The plywood has the difference between the front and back. When picking, the plywood should have clear wood grain, smooth and smooth front, no roughness and no lingering feeling. There should be no defects such as breakage, bumps, hard injuries, and knots, and there should be no degumming on the cutting surface. Some plywood boards are made by affixing two veneers with different textures. Therefore, it should be noted that the plywood joints should be tightly closed. When the plywood was selected, when the parts of the plywood were knocked by hand, the sound was brittle and the quality was good. If the sound is boring, it means that the plywood has been scattered.

Difference between plywood and integrated board

1. A plywood is a common plywood made by sticking three layers of thin wood planks in different grain directions. The integrated board is glue wood.

2. The plywood is made of three layers of veneer made of different materials, so adhesives are used in the production process. The most harmful substance in the adhesive is formaldehyde. Formaldehyde can cause cough in diseases of the respiratory tract and nervous system. Sore throat, chest tightness, dizziness, nausea, weakness, difficulty breathing, drowsiness and other symptoms. More serious causes of cancer such as nasal cancer, throat cancer, skin cancer, and leukemia.

3. The glulam is made of small diameter material, which is produced through the cutting of round wood into plates, dried in plates, made into square strips, broken materials, materials, finger joints, splicing, and subsequent processing. Width, thickness, length of wood. It is a new type of substrate used in the construction industry, furniture, and decoration industry. It has strong strength, 1.5 times that of natural wood, good fireproof, high insulation performance and so on.