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Fiberboard
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Fiberboard () or fibreboard (Commonwealth English) is a type of product that is made out of . Types of fiberboard (in order of increasing density) include or low-density fiberboard (LDF), medium-density fiberboard (MDF), and or high-density fiberboard (HDF).

It is sometimes used as a synonym for particle board, but particle board usually refers to low-density fiberboard. is not a type of fiberboard, as it is made of thin sheets of wood, not wood fibers or particles. Fiberboard, particularly medium-density fiberboard, is heavily used in the industry. For pieces that will be visible, a of is often glued onto fiberboard to give it the appearance of conventional wood.

In the industry, the term "fiberboard" is often used to describe , a tough -based or corrugated fiberboard for boxes.

(2025). 9781930268272, Institute of Packaging Professionals.

"Fiberboard" is also an intermediate product, an output of a used as input for a .


Manufacture
Fiberboard manufacture begins with wood chipping: fresh or recycled wood material is cut and sorted to small pieces of similar size. Chips are washed to remove things such as dirt and sand. Metal scraps such as nails can be removed with a magnet placed over a conveyor belt on which the chips move forward. In the case of, for example, MDF (medium density fiberboard) and not particle board, chips are then steamed to soften them for . Small amount of is added to the steamed chips and they are transformed into fluffy fibers in a defibrator and soon afterwards sprayed with adhesives such as urea-formaldehyde (UF) or Phenol formaldehyde resin (PF). Wax prevents fibers from clumping together during storage. Chips in the case of particle board are also sprayed with a suitable adhesive before the next steps. Fibers or chips are arranged into a uniform "mat" on a conveyor belt. This mat is pre-compressed and then hot-pressed. Hot-pressing activates the adhesive and glues the fibers or chips together. Board is then cooled, trimmed, sanded and maybe or .

UF resins are dominantly used in the MDF industry because of their low cost and fast curing characteristics. However, pressures on the use of UF resins are mounting steadily due to potential problems associated with emission. by , Eleni Vouli, Chariclea Gonitsioti and Georgios Ntalos; Presentation at the COST Action E49 Conference "Measurement and Control of VOC Emissions from Wood-Based Panels", 28-30 Nov. 2007, WKI, Braunschweig, Germany On the other hand, PF resins are more durable and do not emit formaldehyde after cure. The industry has traditionally shied away from using PF resins due primarily to their higher cost and much slower curing rate than UF resins. However, the press times for PF-bonded fiberboard can be substantially reduced by manipulating the fiber mat temperatures, molecular weight distribution of PF resins and pressing parameters. As a result, the press times for PF-bonded fiberboard can be made comparable to those for UF-bonded fiberboard. Also, the resin content required for PF-bonded fiberboard is less than 5% to achieve a good board quickly. This is considerably lower than that required for UF-bonded fiberboard.

Certain types of fiberboard can be considered "green" building products. Consisting of bio-based, secondary raw materials (wood chip or sugarcane fibers) recovered from within of manufacturing facilities, the binding agent used in this type of fiberboard is an all-natural product, consisting of vegetable starch containing no added formaldehydes.


Use
Fiberboard, classified by ASTM C208, Standard Specification for Cellulosic Fiber Insulating Board, has many benefits and is used in residential and commercial construction.

Applications include:

  • sound proofing/deadening
  • structural sheathing
  • low-slope roofing
  • sound deadening flooring underlayment

Fiberboard is also used in the automotive industry to create free-form shapes such as dashboards, rear parcel shelves, and inner door shells. These pieces are usually covered with a skin, foil, or fabric such as cloth, suede, leather, or polyvinyl chloride.

RSI Direct, a bi-weekly covering the roofing, siding and insulation industries,Russo, M. (1 November 2001). "Coverboards enhance roof system performance", RSI Direct. promotes the use of fiberboard as a coverboard in roof systems:

More than two billion square feet of this product have been installed in the U.S. roofing market.


Recycle
Currently, there is no commercially available method to recycle fibreboard, and and burning for energy are the main disposal methods.

The challenges of recycling fibreboard include:

  • Sorting fibreboard waste
  • Reduced fibre properties
  • Contaminants in recycled materials
  • Economical considerations


See also


External links

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