Is the Chipboard sheet quality the higher density, the better?

- Apr 26, 2019-

 What is chipboard sheets ?


       Chipboard is also called particle board and bagasse board. A shredded material made of wood or other lignocellulosic material. which is a synthetic board that glued under the action of heat. and pressure after application of an adhesive. and is also called a particle board. used in the furniture and construction industry. and in the manufacture of trains and cars. 


       Because the structure of the Chipboard is uniform. and the processing performance is good. it can processed into a large-format sheet according to the needs. and is a good raw material. for making furniture of different specifications and styles. The finished Chipboard  does not need to dried again, it can used. and the sound absorption and sound insulation performance is also very good.


       But, it also has its inherent disadvantages. Because the edges are rough. and easy to absorb moisture, the edge-sealing processmade of. Chipboard  is particularly important. Besides, due to the large volume of the particle board, the furniture made with. it is also heavy compared to other panels


 chipboard properties


      Chipboard made up of wood chips bound together with resin. and pressed into a flat, rectangular shape. Pieces of wood that are too small, warped. or otherwise defective for use as lumber splintered into small chips. and mixed with sawdust.


       A synthetic resin added, usually urea formaldehyde. to hold the chips together and increase the strength. and hardness of the finished product. The mixture is then heat-formed under pressure to create a smooth, rigid board. chipboard have follow properties


-no grain direction

-particle board is homogeneous. and has the same degree of strength in different directions.

-the dynamics of the board in the direction of the plane surface is slight.

-The density of particle board varies between 650 and 750 kg/m³. so it is heavier than sawn conifer timber.

-Resists warping, sagging, and chip-out

-Provides excellent machinability. and screw-holding powerIs the ideal choice for a wide range of applications

-Contains post-industrial recycled/recovered fiber


-Weight and Density:

 As it composed of wood chips, wood shavings. and sawdust which are waste materials and have very less weight. particle boards are also light in weight as. compared to medium density fiberboard or plywood.  Due to its lightweight nature, they are easy to transport and handle.  Although they are light in weight, their density is more than natural wood and plywood. Medium density fiberboards and high density fiberboards are denser than particle boards.


-Strength:

Particle boards have low strength as they. made from weak materials like wood chips and sawdust. They cannot withstand heavy loads and used when load application is less.


-Resistance to Moisture:

One of the most concerned properties of particle board is that it has low resistance to moisture. In the presence of moisture. the boards experience swelling and development of cracks may occur. Also, on exposure to moisture, particle board gets discoloured.


-Resistance to Warping:

Particle boards have low resistance to warping, but coating it with primer. or painting the particle board, can improve its resistance. The coating also helps in increasing its strength up to some extent.


-Durability:

As it has low strength, particle boards are less durable as compared to plywood or solid wood. They last 3-5 years, but with proper care they have a durability of few more years. The durability can increased by covering the surface with laminates or wood veneer. Laminated particle board and veneered particle board have useful life of 10-15 years.


-Insulation:

Particle boards have good sound insulation properties. thus they used in partition walls and ceilings of recording studios. and concert halls.


-Fire Resistance:

Particle board can made fire resistant by attaching a layer of melamine on the top surface. Melamine particle boards used in manufacturing of industrial furniture.


-Eco-Friendly:

Particle boards are eco-friendly materials as they manufactured from recycled materials. and waste such as wood chips. wood shavings, sawdust, etc. Thus, it helps in environmental conservation to some extent.


 Chipboard application


        Because chipboard is not considered a "beautiful" wood. the most common uses involve applications as a base or foundation. where the chipboard itself would covered up. Most laminate countertops have a chipboard base. and many types of laminate flooring installed over chipboard. Because of its low cost,


      chipboard is commonly used to build low-cost indoor furniture. especially the kind shipped in a flat-pack. High-density chipboard is rigid, durable, heavy, and even flame-retardant, making it a useful. yet inexpensive material.



chipboard properties


Types of Chipboard 


Classified according to use: Class A particle board, Class B particle board.


According to the structure of Chipboard. single-layer structure particle board, three-layer structure particle board,


Gradient structure particle board, oriented strand board, waffle particle board, molded particle board.


According to the manufacturing method: flat pressed particle board, extruded particle board.


According to the raw materials used. wood particle board, bagasse chipboard, linen chipboard, cotton slab particle board. bamboo particle board and so on.


Chipboard quality


      The plain Chipboard  industry must improve the quality of. its products and reduce costs. and take part in market competition. The market space for products is still huge. Besides to ensuring the supply of raw materials and improving product quality. companies must increase technological innovation. recycle waste wood to achieve a circular economy.


      Efforts will made to develop new uses for Chipboard.  especially to increase research on oriented strand board. and publicity of particle board use. To improve the quality of Chipboard , reduce costs and improve research. and development capabilities, it is necessary to increase the scale of project construction. Reorganize the small Chipboard  factory to reflect economies of scale.


     According to the national standard control of Chipboard . the standard Chipboard  standard specifies three dimensions: dimensional tolerance. appearance and physical and mechanical properties:


       First, the dimensional tolerance: the length, width. and thickness tolerance of the particle board. The national standard has strict regulations. and only the positive tolerance allowed for the length and width. and the negative tolerance is not allowed. The thickness tolerance determined according to the smooth. and smooth sanding product and the rough surface of the unsanded product.


     After sanding products, the quality is high. and the thickness tolerance of the board is uniform. The unsanded product has a lower precision. and the thickness and thickness tolerance are not uniform throughout the same sheet.


           Second, the appearance of quality: Judged by visual methods. If the surface layer and the core layer of the board are not graded, the surface of the shavings is rough. and its physical and mechanical properties are poor. which is not conducive to the later finishing treatment. Such boards are single-layer structural boards with poor quality. 


       If the surface of the board layered. or the shavings change from the inside to the inside. the board is a three-layer structure or a graded structural board of good quality. In addition, it is necessary to look at the appearance quality of the board. some defects such as corner damage and breakage, with metal debris are not allowed. Other defects such as indentations. gel spots, oil stains, etc.  allowed to minimized by level.


     Third, physical and mechanical properties. This is the key to check the quality of particle board. which can only tested by the laboratory. Its mechanical properties related to the density and thickness of the board. If the density is large, the mechanical properties are good. The panel thickness is low in mechanical properties. The board is thin and has good mechanical properties.


chipboard properties


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       More Reading:How To Identify The Blockboard And What Are Its Characteristics?


tags:

medium density. high density. normal density. wood fibers. wood pieces. fairly soft. often used. wood particles. flatpack furniture. work surfaces. kitchen units. engineered wood. building materials. wood flour. different types. wood products.