Wood Substitutes

1. MODULE 1 WOOD SUBSTITUTES

2. Wood Substitutes.
Industrial products as substitutes for natural hard wood.
• Characteristics
• physical properties
• Areas of application
• Available forms and sizes of: Veneers and veneer ply
woods, particle board, hard board, fiberboard, block
board, lamina- boards, glulam, laminates, cement
particle board, e-board, bamboo ply, etc.
• Site visit: Industries of Wood
substitutes Exercise: Market
survey of wood substitutes

3. TYPE OF WOOD SUBSTITUTES
Veneers of wood – Plywood
Wood chips ,saw dust wood fibre -LDF,MDF,HDF
Wood strips – Wood veneer – Block board
Wood lumbar - Glulam

4. PARTICLE BOARD (KNOWN AS LDF BOARD,CHIP BOARD)
• Engineered wood product manufactured from wood chips, saw mill
dust and synthetic resin or suitable binder which is pressed and
extruded.
• Cheaper than wood and plywood
• Can be made attractive by painting or applying veneers/laminates
• Lightest and weakest type of fibre board
• Prone to expansion and discoloration due to moisture hence less used
in outdoor
• Used for furniture and inbuilt shelves.

5. Make
• made from very small particles of wood (sawdust and small wood flakes)
• wood particles are mixed with glue (Urea formaldehyde resin) mixture is firmly
pressed together using a hot-press machine
Uses
• Used to make ready-made furniture, kitchen cabinets, false ceiling, wall panels,
and partitions
Classification:
OSL: One sided lamination.
• Only one side of the (the top surface or show surface) is laminated,
BSL: Both sided lamination.
• Both the top and bottom surfaces are laminated .
• BSL is costlier than OSL.
PARTICLE BOARD (LDF, CHIP BOARD)

6. FIBRE BOARD
• An engineered wood made by breaking down hard wood or soft wood
residuals into wood fibres combining it with was and resin binder and
forming panels by applying high temperature and pressure.
• Stronger and denser than particle board
• Does not contain knots or rings
• Subject to significant shrinkage in low humidity environment

7. FIBRE BOARD
Benefits of fiberboard:
•Excellent thermal and acoustic
improvement.
•Robust and stable support for final floor
finish.
•Helps increase serviceable life of final
floor.
•High loadbearing and weight resistance.
•Light weight and easy to handle.
•Quick and simple to install.
•Environmentally friendly composition.
•Inexpensive product.
•Holds paint well
Disadvantages:
•Weak compare to wood.
•Not as durable as real wood.
•Requires more nails when installing it.
•Might take more time to install compare
to real wood.

8. HARD BOARD (HIGH DENSITY FIBRE BOARD)
• Denser ,stronger harder
• Made out of exploded wood fibres that have been highly compressed

9. Making-
• made from wood fibre is extracted from chips and pulped wood
waste.
• In the production process the pulp is exploded under pressure. Heat and
steam is applies to leave a fine, fluffy brown fibres.
• These fibres are transformed into mats, which are held together with
lignum and other glues.
• The mats are than pressed between steam-heated metal plates to give
grain less sheets with one smooth, glossy surface and one textured surface.
Toprevent warping, moisture is added in a humidification chamber.
Disadvantages: -Hardboard cannot be used outside because it absorbs
water.
HARD BOARD (HIGH DENSITY FIBRE BOARD)

10. VENEERED MDF
Complex process which involves taking an extremely thin slice of hard wood
which are bind through high pressure and stretching methods wrapping them
around the profiled MDF Boards.
• Veneer is obtained either by "peeling“ the trunk of a tree or by slicing
large rectangular blocks of wood known as flitches.
• The appearance of the grain and figure in wood comes from slicing
through the growth rings of a tree and depends upon the angle at
which the wood is sliced.