-------QUALITY PRODUCTS, EXCELLENT SERVICE, COMPETITIVE PRICES and PROMPT DELIVERY------
QINGDAO GOLD LUCK PLYWOOD-YUNCHENG TIANYUAN WOODEN Co., Ltd
1. Established in 1996;
2. Specialized in different kinds of wood boards for 20 years more;
3. Owns 12 production lines;
4. Covers 100, 000 square meters;
4. Daily Output: 8x40HQ;
5. Until now, annual export volume above 2 billion.
Particle board, also known as particleboard and chipboard, is an engineered wood product manufactured from wood chips, sawmill shavings, or even sawdust, and a synthetic resin or other suitable binder, which is pressed and extruded. Oriented strand board, also known as flakeboard, waferboard, or chipboard, is similar but uses machined wood flakes offering more strength. All of these are composite materials that belong to the spectrum of fiberboard products.
DISADVANTAGES AND ADVANTAGES OF PARTICLE BOARD:
Particle board is cheaper, denser and more uniform than conventional wood and plywood and is substituted for them when cost is more important than strength and appearance. However, particleboard can be made more attractive by painting or the use of wood veneers onto surfaces that will be visible. Though it is denser than conventional wood, it is the lightest and weakest type of fiberboard, except for insulation board. Medium-density fibreboard and hardboard, also called high-density fiberboard, are stronger and denser than particleboard. Different grades of particleboard have different densities, with higher density connoting greater strength and greater resistance to failure of screw fasteners.
A major disadvantage of particleboard is that it is very prone to expansion and discoloration due to moisture, particularly when it is not covered with paintor another sealer. Therefore, it is rarely used outdoors or in places where there are high levels of moisture, with the exception of some bathrooms, kitchens and laundries, where it is commonly used as an underlayment - in its moisture resistant variant - beneath a continuous sheet of vinyl flooring.
The advantages of using particleboard over veneer core plywood is it is more stable, (unless it gets wet), much cheaper to buy, and somewhat more convenient to use.
Particleboard or chipboard is manufactured by mixing wood particles or flakes together with a resin and forming the mixture into a sheet. The raw material to be used for the particles is fed into a disc chipper with between four and sixteen radially arranged blades (the chips from disk chippers are more uniform in shape and size than from other types of wood chipper). The particles are then dried, after which any oversized or undersized particles are screened out.
Resin is then mist-sprayed through fine nozzles onto the particles. There are several types of resins that are commonly used. Amino-formaldehyde based resins are the best performing when considering cost and ease of use. Urea Melamine resins are used to offer water resistance with increased melamine offering enhanced resistance. It is typically used where the panel is used in external applications due to the increased water resistance offered by phenolic resins and also the colour of the resin resulting in a darker panel. Melamine Urea phenolic formaldehyde resins exist as a compromise. To enhance the panel properties even further the use of resorcinol resins typically mixed with phenolic resins are used, but this is usually used with plywood for marine applications and a rare occasion in panel production.
Panel production involves various other chemicals-including wax, dyes, wetting agents, release agents-to make the final product water resistant, fireproof, insect proof, or to give it some other quality.
The particles then pass through a mist of resin sufficient to coat all surfaces and are then layered, first into a continuous carpet. This 'carpet' is then separated into discrete, rectangular 'blankets' which will then be compacted in a cold press. A weighing device notes the weight of flakes, and they are distributed into position by rotating rakes. In graded-density particleboard, the flakes are spread by an air jet that throws finer particles further than coarse ones. Two such jets, reversed, allow the particles to build up from fine to coarse and back to fine.
The sheets formed are then cold-compressed to reduce their thickness and make them easier to transport. Later, they are compressed again, under pressures between 2 and 3 megapascals (290 and 440 psi) and temperatures between 140 and 220 °C (284 and 428 °F). This process sets and hardens the glue. All aspects of this entire process must be carefully controlled to ensure the correct size, density and consistency of the board.
The boards are then cooled, trimmed and sanded. They can then be sold as raw board or surface improved through the addition of a wood veneer or laminate surface.
Particle board has had an enormous influence on furniture design. In the early 1950s, particle board kitchens started to come into use in furniture construction but, in many cases, it remained more expensive than solid wood. A particle board kitchen was only available to the very wealthy. Once the technology was more developed, particle board became cheaper.
Large companies base their strategies around providing furniture at a low price. They do this by using the least expensive materials possible, as do most other major furniture providers. In almost all cases, this means particle board or MDF or similar. However, manufacturers, in order to maintain a reputation for quality at low cost, may use higher grades of particle board, e.g., higher density particle board, thicker particle board, or particle board using higher-quality resins. One may note the amount of sag in a shelf of a given width in order to draw the distinction.
In general the much lower cost of sheet goods (particle board, medium density fiberboard, and other engineered wood products) has helped to displace solid wood from many cabinetry applications.
Mrs. Zoe Zang
Mobile: 0086-152 8896 8485
|Product Name||Melamine Faced Particle Board|
|Material||Wood grains, etc.|
|Thickness(mm)||12mm - 25mm|
|Modulus of Rupture(MOR)||50 MPa|
|Formaldehyde Emission||2.89 mg/L|
|Bonding Strength||above 0.72 MPa and below 1.75 MPa|
|Certification||SGS, FSC, CO, Phytosanitary Certificate, Fumigation/Disinfection Certificate, etc.|
|Price Term||FOB, CIF, CNF, etc.|
|Payment Term||T/T or irrevocable L/C at sight|
|Delivery Time||Within 7 days after deposit or original L/C at sight|
|Packing||Inter packing: 0.2mm plastic film;|
Outer packing: bottom is pallet covered with plastic film; around is carton or plywood strengthened by 3*6 steel belt.
|Features wear-resistant, smooth face and flat board|