Question 1: What is the size of the nine plywood? Nine-plywood is also called nine-layer board. Its thickness is 9 mm. The material can be density board or multi-layer board, but it generally refers to 9 mm multi-layer board. Nine-plywood is used in furniture It is widely used in manufacturing and is also used in interior decoration.

Generally, nine-plywood can be made into cabinets, cabinets, seats, wardrobes and other panel furniture in furniture manufacturing. In terms of interior decoration, it can be used as ceilings, dado skirts, floor linings, etc. In construction projects, it can be used as concrete building formwork, building components, etc., and it is also widely used in the vehicle and ship manufacturing and packaging industries.

Because nine-plywood is a type of plywood, it is different from three-plywood, five-plywood, etc. They are basically plywood. They may differ in thickness. Generally, the length of nine-plywood is 2440mm, width 1220mm, but this can be produced according to personal requirements.

Question 2: What are the specifications of 9mm plywood and what are the length, width and thickness? The plywood is divided into three to six feet, four to eight feet, that is, 920*1840, 12 arcs and 0*2440! Nine plywood is 1220mm*2440mm

Question 3: What is nine plywood? Nine plywood, also known as nine-layer board, is actually a 9mm thick sandwich wooden board. The sandwich board uses one material as the core material and other materials on both sides as the surface layer. The material can be density board or multi-layer. Board, generally refers to 9MM multi-layer board. Nine plywood is generally used in the production of skirting boards and decorative panels, and is also used in the production of furniture rear wall panels. Most of them on the market are white Liujiu plywood.

Consumers can "look, smell and knock" when purchasing: "One look" is to check the formaldehyde emission level. E1 level formaldehyde emission should be less than 1.5mg/L, and E2 level formaldehyde emission should be less than 1.5mg/L. It should be less than 5.0mg/L; the "second smell" means not to choose products with a sexual smell; the "three knocks" means to choose products with a non-hollow sound when knocking on a wooden board

Question 4: Jiuli Are board and nine-plywood the same thing? These two are different boards.

1. Nine-plywood is actually a 9mm thick sandwich wooden board. The sandwich board uses one material as the core material and other materials on both sides as the surface layer.

2. "Nine-centimeter board" is actually 9mm thick plywood. Plywood is made of more than three layers of odd-numbered wooden veneers glued vertically to each other according to the fiber direction.

Question 5: What are the specifications and prices of the nine plywoods of large core board gypsum board? The large core board is about 120-80 yuan, the specification is 2440*1220*17.5, and the good gypsum board costs 35-30 yuan. The left and right specifications are 3000*1200*10, and the nine-plywood specifications are 2440*1220*9, ranging from 80-50 yuan.

Question 6: What is the difference between large core board and 9 plywood? Thanks! Large core board is made of two veneers glued together and spliced ??together. The total thickness of the two-sided glued veneers of the blockboard shall not be less than 3mm. The width of the corner defects of various types of blockboards within one centimeter shall not exceed 5mm, and the length shall not exceed 20mm. The middle wooden board is made of high-quality natural wooden boards that are heat treated (i.e. dried in a drying room) and processed into wooden strips of a certain specification, which are spliced ??by a splicing machine. The two sides of the spliced ??wooden boards are covered with 1-2 layers of high-quality veneers, and are then glued and pressed by cold and hot presses. It is mostly used as a base or as a "core"

9-layer plywood is a 9-layer thin plate made by spinning logs into veneers or planing wood into thin wood, and then gluing it with adhesive. Plywood is usually made of an odd number of layers of veneers, and the fiber directions of adjacent layers of veneers are arranged perpendicular to each other and glued together. It is mostly used on wooden surfaces and can be painted directly.

Question 7: What is the difference between plywood and plywood? Plywood is also called plywood, and some people call it careful board. It is made of three or more layers of 1mm thick veneer sheets glued and hot-pressed. Plywood is generally divided into They are 3mm, 5mm, 9mm, 12mm, 15mm, and 18mm. If it is used for doors, it is best to use imported plywood, because the quality of imported boards is better and not easy to deform. At the same time, the price is relatively high!

Nine plywood is 9mm plywood

Because 9 plus 18 plus the outer adhesive tape (1mm) can be combined into plywood of many thicknesses, which is more convenient.

The following is an introduction to plywood:

1. Classification of wood boards

1. According to material classification, it can be divided into two categories: solid wood boards and artificial boards. At present, except for the solid wood boards used for floors and door leaves, generally the boards we use are artificially processed artificial boards.

2. According to the molding classification, it can be divided into: solid board, plywood, fiber board, decorative panel, fireproof board and so on.

2. Types of wooden boards

1. Solid wooden boards.

As the name suggests, solid wood boards are wood boards made of complete wood. These boards are durable and have natural texture, making them the best choice for decoration. However, due to the high cost and high construction technology requirements of this type of panels, they are not widely used in decoration.

Solid wood boards are generally classified according to the actual name of the board, and there is no unified standard specification.

2. Solid wood flooring

Solid wood flooring is the most common ground decoration material used in decoration in recent years. It is a very significant symbol of the improvement of the quality of life of Chinese families. Solid wood flooring has the advantages of solid wood boards, but because it is produced by industrial production lines in factories and has uniform specifications, it is easy to construct and even faster than other board constructions. However, its disadvantage is that it requires relatively high craftsmanship. If the builder's skills are not good enough, it will often cause a series of problems, such as arching, deformation, etc.

The name of solid wood flooring consists of the name of the wood and the name of the edge treatment. The edge joint processing is mainly divided into three types: flat mouth (no tongue and groove), tongue and groove, and double tongue and groove. Flat flooring is an obsolete product. The double tongue and groove flooring has not yet become popular due to immature technology. Most of the floors currently laid are single tongue and groove floors. Generally speaking, the tongue and groove floor also refers to the single tongue and groove floor.

Solid wood floors can also be divided into two types: painted boards and plain boards, depending on the treatment of the paint surface. Painted boards refer to those that have been topcoated before leaving the factory, while plain boards refer to those that have not yet been painted. The construction period of paint board is short, but the surface smoothness is not as good as that of plain board, and there will be slight unevenness. The construction period of plain board is slow, generally one to two times longer than that of painted board, but the surface is smooth.

3. Composite flooring

Composite wood flooring, also called laminate flooring, because some companies often name themselves some names for different purposes, such as super-strong wood flooring , diamond-shaped wood flooring, etc., no matter how complicated and different their names are, these boards are all composite floors. Just as we call a helicopter a helicopter rather than a helicopter, these boards do not use wood, so it is unreasonable to use the term composite wood flooring. The appropriate name is laminate flooring. The national standard name for this type of flooring is: impregnated paper laminated wood flooring.

Composite flooring is generally composed of four layers of materials: the bottom layer, the base material layer, the decorative layer and the wear-resistant layer. The number of revolutions of the wear-resistant layer determines the life of the composite floor.

1) Bottom layer: made of polyester material, which is moisture-proof.

2) Base layer: Generally made of density board, depending on the density of the density board, it is also divided into low density board, medium density board and high density board.

3) Decorative layer: Special paper printed with specific patterns (mainly simulating real textures) is soaked in melamine solution, chemically treated, and heated by melamine. The final chemical properties are stable and no chemical reactions occur, making this paper a beautiful and durable decorative layer.

4) Wear-resistant layer: It is a wear-resistant agent consisting of a layer of aluminum oxide evenly pressed on the surface of the laminate floor. The content of aluminum oxide and the thickness of the film determine the number of wear-resistant revolutions. The rotation speed of the wear-resistant layer containing about 30 grams of aluminum oxide per square meter is about 4000 revolutions, the wear-resistant revolution speed of the wear-resistant layer with 38 grams of aluminum oxide per square meter is about 5000 revolutions, and the wear-resistant revolution speed of the wear-resistant layer with 44 grams of aluminum oxide content should be about 9000 revolutions. Left and right, the greater the content and film thickness, the higher the number of revolutions, and the more wear-resistant it is.

The disadvantage of composite flooring is that when it is laid over a large area, there will be overall arching and deformation. Because it is made of composite materials, the corners between the boards are easily broken or worn.

4. Plywood

Plywood, also known as plywood, is commonly known as thin core board in the industry. It is made of three or more layers of one millimeter thick veneers or thin sheets glued together and hot pressed. It is currently the most commonly used material for hand-made furniture. Plywood is generally divided into 3cm, 5cm, 9cm, 12cm, 15...>>

Question 8: Why are there only three plywood, five plywood and nine plywood? Wood shrinks when it dries, and cross-grain wood shrinks more than straight-grain wood. Therefore, the board generally warps in the direction of the cross-grain. The thinner the board, the easier it is to warp. The wood in plywood is very thin wood chips, and warping is inevitable when they are glued together into plywood. How to use the force balance principle to prevent the entire plywood from warping?

The purpose of using odd-numbered plywood is to give the plywood a core layer. Generally speaking, the core layer in the middle is made of straight-grained boards with less shrinkage. Horizontal-grained boards are bonded on both sides of it, and straight-grained boards are bonded on the outside. In this way, the overlapping and bonding of the plywood in a horizontal and vertical manner will restrain each layer of thin sheets from each other, so that the plywood can shrink less or less. Since the outermost layers of odd-layer plywood shrink in the same direction (generally straight-grained boards are also used), the final glued plywood will not warp.

If it is an even-numbered plywood, such as four-plywood, its grain direction can only be straight-horizontal-straight-horizontal, or horizontal-straight-horizontal-straight. In short, the outermost two layers The grain directions of the thin plates are different, which will cause two undesirable consequences: first, the size of the two surfaces of the plywood is the same, and the horizontal grain side shrinks more, resulting in a smaller surface than the straight grain side; second, due to the two sides Different shrinkage will inevitably cause warping, and the plywood will bend toward the side of the transverse grain surface with a large shrinkage rate.