This document provides information on various types of industrial timber, including veneers, plywood, fibreboards, impregnated boards, compressed boards, block boards, and laminated boards. It describes the manufacturing processes and properties of each type of industrial timber. The key types discussed are used to make furniture, construction materials, and other wood products.
All you need to know about timber in just a single ppt with interesting slides. Hope it hlps! This ppt was created as the result of a teamwork with my classmates
All you need to know about timber in just a single ppt with interesting slides. Hope it hlps! This ppt was created as the result of a teamwork with my classmates
Doors,Windows & Ventilator in Building ConstructionEr.Karan Chauhan
Doors, Windows & Ventilator is a part of building component which is allow to Air & light move & circulate inward & outward, with in door Human or any other material can be move inside or outside also. here types of doors & windows & ventilation are given with necessity of location, function etc.
definition of timber, defects, sources of timber, seasoning of timber, components of timbers
classification of timber, advantages of timber, disadvantages of timber.
Doors,Windows & Ventilator in Building ConstructionEr.Karan Chauhan
Doors, Windows & Ventilator is a part of building component which is allow to Air & light move & circulate inward & outward, with in door Human or any other material can be move inside or outside also. here types of doors & windows & ventilation are given with necessity of location, function etc.
definition of timber, defects, sources of timber, seasoning of timber, components of timbers
classification of timber, advantages of timber, disadvantages of timber.
A complete Business Plan for Setting up Ply Board from Poplar & Eucalyptus Wo...Ajjay Kumar Gupta
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Plywood/Plyboard is a composite made up of thin layers of wood veneer called "plies" that are glued together and have their wood grain rotated up to 90 degrees from one another. It's an engineered wood that belongs to the same family as medium-density fiberboard (MDF) and particle board (chipboard). Plyboard is a composite material made up of resin and wood fiber sheets (cellulose cells are long, solid, and thin).
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The terms “hardwood” and “softwood” are often misleading because they have no direct relation to the actual physical hardness or softness of the wood, so that a hardwood may actually be softer than a softwood.
This presentation is all about timber products specifically fiberboards , particle board and compressed straw board.
in this ppt all the information haas been provided like from there manufacturing processes to there uses to there rates and size to the manufacturing companies . It is very helpful for architectural students. more importance is given on constructional details . Hope u like it :)
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2. TIMBER DENOTES WOOD WHICH IS SUITABLE
FOR BUILDING OR CARPENTRY OR VARIOUS
OTHER ENIGNEERING PURPOSES .
GOOD TIMBER IS SELECTED ON BASIS OF
APPERANCE , COLOURS , DEFECTS ,
ELASITICITY , SHAPE SRUCTURE etc…
IN THIS PART , WE GOING TO HAVE DETIALED
STUDY ON INDUSTRIAL TIMBER
3. THE TIMBER WHICH IS PREPARED SCIENTIFICALLY IN A
FACTORY IS TERMED AS INDUSTRIAL TIMBER
SUCH TIMBER POSSESSESS DESIRED SHAPE , APPERANCE ,
STRENGTH etc….
Following are variety of industrial timber :
VENEERS
PLYWOOD
FIBREBOARDS
IMPREG BOARD
COMPREG BOARD
BLOCK BOARD AND LAMIN BOARD
GLULAM
FLUSHDOOR SHUTTERS
PARTICLE BOARDOR CHIP BOARD
HARDBOARD
4. THESE ARE THIN SHEET OR SLICES OF WOOD OF
SUPERIOR QUALITY
THICKNESS OF VENEERS VARIES FROM 0.40 mm to
6 mm
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
THEY ARE OBTAINED BY ROTATING A LOG OF
WOOD AGAINST A SHARP KNIFE OF ROTARY
CUTTER ORSAW
THE VENEERS AFTER BEING REMOVED ARE DRIED
IN KILNS TO REMOVE MOISTURE
5. There are a few types of veneers available,
each serving a particular purpose:
Raw veneer
Paper backed veneer
Phenolic backed veneer
Laid up veneer
Reconstituted veneer
6. ADVANTAGES OF THE VENEERS :
Furniture made with wood veneer uses less wood
than the same piece of furniture made with solid
wood. Some projects built using wood veneer
would not be possible to construct using solid
lumber, owing to expansion and contraction
caused by fluctuation of temperature and
humidity.
USES OF VENEERS :
Veneer beading is a thin layer of
decorative edging placed around objects, such as
jewellery boxes. Veneer is also used to replace
decorative papers in Wood Veneer HPL. Veneer is
also a type of manufactured board.
7.
8. The meaning of term ply is a thin layer .
The plywood are boards which are prepared from
thin layer of wood or venners
The three or more veneers in odd numbers are
placed one above the other with the direcation
of grains of successive layers at right angles to
each other
When it glued pressure should be appied on
veneers.
For hot pressure , hydradulic press is used .
Temp : 150-261 degree c
For coldpressurse , pressure applied on plywood
varies from o.70 to 1.40 N/mm 2
9. STRUCTURAL CHARACTERS OF PLYWOOD :
A typical plywood panel has face veneers of a
higher grade than the core veneers.
The principal function of the core layers is to
increase the separation between the outer layers
where the bending stresses are highest.
Bending stress decreases from the maximum at
the face layers to nearly zero at the central
layer.
Shear stress, by contrast, is higher in the center
of the panel, and zero at the outer fibers.
10. SIZES OF PLYWOOD :
The most commonly used thickness range is
from 0.14 to 3.0 in (0.36 to 7.6 cm). The sizes of
the most commonly used plywood sheets are 4
by 8 ft (1.2 by 2.4 m) or 3 by 6 ft (0.91 by 1.8
m). Width and length may vary in 1 ft (30 cm)
increments.
In the United States, the most commonly used
size is 4 ft by 8 ft or 5 ft by 5 ft.
Sizes on specialised plywood for concrete
forming range from 6 to 21 mm, and a multitude
of formats exist, though 15x750x1500mm is very
commonly used.
11. The plywood are available in different commercial forms such as
BATTENBOARD
LAMINBOARD
MEATAL FACED PLYWOOD
MULTIPLY
THREE-PLY
VENEERED PLYWOOD
The plywood is also classified on basis of purpose
SOFTWOOD PLYWOOD
HARDWOOD PLYWOOD
TROPICAL PLYWOOD
AIRCRAFT PLYWOOD
MARNINE PLYWOOD
FLEXIABLE PLYWOOD
SPECIAL PURPOSE PLY WOOD
DECRORATIVE PLYWOOD
12. APPLICATION OF PLYWOOD
Plywood is used in many applications that need
high-quality, high-strength sheet material.
Exterior glued plywood is suitable for outdoor use,
but because moisture affects the strength of wood,
optimal performance is achieved in end uses where
the wood's moisture content remains relatively low.
Plywood is also used as an engineering material for
stressed-skin applications.
Plywood is often used to create curved surfaces
because it can easily bend with the grain. Skateboard
ramps often utilize plywood as the top smooth
surface over bent curves to create transition that can
simulate the shapes of ocean waves.
13.
14. These are rigid boards and they are also known
as the pressed wood or reconstructed wood
The thickness varies from 3mm to 12mmm
Length : 3m to 4.50 m
Width 1.20 m to 1.80 m
Weight limits are 9600N/m3 TO 500 N/m2
Fibreboard is a type of engineered
wood product that is made out of wood fibres .
Types of fibreboard (in order of increasing
density) include particle board, medium-density
fibreboard, and hardboard. Fibreboard is
sometimes used as a synonym for particle board,
but particle board usually refers to low-density
fibreboard.
15. MANUFACTURE PROCESS OF FIBRE BOARDS:
DEBARKING
CHIPPING
PULPING
THE BLOWLINE
MAT FORMATION
PRESSING
FINISHING
16.
17. DEPENDING UPON FORM AND COMPOSITION ,
THE FIBREBOARD ARE CLASSIFIED AS
INSULATING BOARD
MEDIUM HARD BOARD
HARD BOARDS
SUPER HARD BOARD AND LAMINATED
Different uses and applications include:
sound proofing/deadening,
structural sheathing,
low-slope roofing,
sound deadening flooring underlayment,
18. APPLICATION OF FIBRE BOADRS:
Fibreboard is often used to make furniture or
cabinets. It is an excellent material for
veneering, but also has a smooth surface that
holds paint well. Some homeowners may use
fibreboard panels in the home in place
of drywall, or in any other application that
calls for a hardboard wood product. This
material is not recommended for use in
exterior applications because it is vulnerable
to moisture and humidity.
19.
20. The timber which is fully or partly covered
with resin is know as the impreg timber
Resin used : phenol formaldehyde
Timber which has been made flame-
resistant, fungi-resistant, or insect-proof by
forcing into it under vacuum or pressure a
flame retardant or a fungal or insect poison.
Trade names of impreg timber
formica
sungloss
sunmica
21. Manufacturing process of impreg timbers are
The venners or thin strip of woods are taken
and they are immersed in resin
The resin fills the space gaps in the wood
It is curved at temperature about 150 degree
c to 160 degree c
22. Classification impreg timber and their uses:
Class A, EN 351 P8/HC4 - impregnation chemical
Tanalith E.
Use in contact with land, water and concrete. Fence
posts, power poles and transmission lines, bridges,
boat fabrications, concrete constructions, railway
sleepers, and various other weather influenced
timber structures.
Class AB; P8/HC3 EN 351 - impregnation chemical
Tanalith E.
Use of land and without water. The terrace tables,
boat bridges, scaffolds, weatherboard, wooden,
gazebo, noise barriers, handrails, fence boards,
garden furniture, children's playground. Tanalith E
concentration in the timber is below the Class A.
23. Advantages of impreg boards :
Not affected by moisture and weather
condition
Strong and durable
More electrical insulation
Decent apperaance
Resists acidic effects
Free from pests and insects
24.
25. Processed wood whose cells are impregnated
with a resin and compressed, to reduce shrinking
and swelling and to increase density
and strength. This wood is called as compreg
timber
The process of preparing compreg timbers is
same as the that of impreg timber except that
curing is carried out under pressure .
The strength and durability of compreg timber
are more as compared impreg timber
The sp. Gravity od compreg timber is 1.30 to
1.35
26. Appilication of compreg timber :
Moulds for molding techniques like, injection
molding, blow molding, transfer molding
rotational molding, casting, patterns, profiles,
extrude, die etc.
used for making boxes for the heavy equipments,
electrical transformers, fish storage boxes,
marine decks & cabins etc. Compreg plywood
can be used for manufacturing of pallets for
industrial application and railway berths & seats
etc.
27.
28. Block boards are boards having a core made up of strips of
wood , each not exceeding 25 mm in width
The edges are glued togather to form a sheet which is
finished with one or two cross bonded veneers
Block board is composed of a core of softwood strips (up to
about 25mm wide) placed edge to edge and sandwiched
between veneers of hardwood, the 'sandwich' is then bonded
under high pressure.
block boards are made in moisture resistant & boiling
water resistant grade. The wooden battens are seasoned in
scientifically run seasoning kiln plants and then get plain
with the four sider precision plainer to obtain the uniform
thickness of battens.
These battens are systematically arranged and care is
taken to avoid any gap between the battens. Regular test
are conducted to maintain the quality of block boards as
per relevant standards.
29. Sizes:
Blockboard is sold in sheets of 2440 x 1220mm and are normally 30mm thick.
Block board has a good resistance to warping if both sides are left natural or
painted/papered. If only one side is finished, then surface tensions build up
which will cause the sheet into a bend.
Application
Furniture,
Kitchen Cabinets,
Partitions,
Exteriors uses,
Bank Counters,
Ship Counters,
Ship Cabinets,
Wardrobes
Construction,
Packing
30.
31. When thickness of core strips does not exceed 7
mm , such boards are called as lamin boards
Laminboard, also commonly known as
lumberboard, joinery board or blockboard,
consists of a central layer of edge-glued battens
of between 24 and 30 mm width, covered on
both sides with a facing veneer. 5-ply
blockboard/5-ply lumber-core has a double-layer
of veneer on each face for added strength.
Laminboard is a higher-grade variant of
blockboard in which the central core consists of
thinner 5-8mm battens or veneer arranged 'on
edge'.
34. IT means glued and laminated wood
It is not made of veneers but with solid wood
Glued laminated timber, also called Glulam, is
a type of structural timber product comprising a
number of layers of dimensioned timber bonded
together with durable, moisture-resistant
structural adhesives
Glulam is readily produced in curved shapes and
it is available in a range of species and
appearance characteristics to meet varied end-
use requirements . Connections are usually made
with bolts or plain steel dowels and steel plates.
35. Glulam provides the strength and versatility
of large wood members without relying on
the old growth-dependent solid-sawn
timbers. It reduces the overall amount of
wood used when compared to solid sawn
timbers by diminishing the negative impact
of knots and other small defects in each
component board.
Glulam can be manufactured to a variety of
straight and curved configurations so it offers
architects artistic freedom without
sacrificing structural requirements
36. Manufacturing process :
timber section are first dried in the kiln
machined to form interlocking v – cut across
the width
suitable glues are appiled and forced
togather under longitudinal pressure , while
glue curls
37.
38. IN MODERN TRENDS , FACTORY MADE FLUSH
DOOR SHUTTER HAVE BECAME POPLUAR FOR
INTERIOR WORK .
THEY ARE AVAILABLE IN THICKNESS OF 25mm,
30mm, OR 3mm
Flush Door: Flush Doors are also a kind of
block board which is used to make door
panels and differ in sizes according to the
size of door.
39. SALIENT FEATURES:
Manufacture in strict adherence to
IS:2202:1991
Bonded with UPF Synthetic Resin adhesive to
make it Boiling Water Proof.
Hot Pressed, Treated with chemical
Preservatives like Copper, Chromium &
Arsenic for better resistance to termite
attack.
Hardwood Frame-cum Internal Lipping.
Blockboard Construction, Dimensionally
stable & study.
40. Magnus flush door are assembled with hard
wood which is known for its load bearing
capacity. Full size frames are used for better
strength. Both side lock rails are provided for
sufficient strength to the handles and knobs.
All core, battens and frames are treated with
special chemical, which makes the door
stable in case of borer and termite attack.
BWP grade PF resin is used during
manufacturing which provide long life to
doors in any climate.
41. Application :
Ideal for external a well as internal door
shutter for all types of building, residence,
office, nursing home, auditoriums,
classrooms, hotels, schools, colleges,
barracks, hospitals etc.
Different types of flush door shutters are
available in the market
celluar core type
Hollow core type
Block board core type
Particle or mdf board core type
42.
43. Particle board, also known
as particleboard and chipboard, is
an engineered wood product manufactured
from wood chips, sawmill shavings, or
even saw dust, and a synthetic resin or other
suitable binder, which is pressed
and extruded. Particleboard is a composite
material.
Particleboard is cheaper, denser and more
uniform than conventional wood
and plywood and is substituted for them
when appearance and strength are less
important than cost.
44. Manufacturing process
wooden particles or rise husk , embedded in
resin and subjected to heat with pressure .
These boards are manufacturing by extrusion
pressing or pressing in parallel plates
Four types of particle board :
FLAT PRESSED SINGLE LAYER BOARD
FLAT PRESSED THREE LAYER BOARD
EXTRUSION PRESSED SOLID BOARD
EXTRUSION PRESSED TUBULAR CORE
45. Particle board is inexpensive and versatile
making it a great product for many industries.
Particle board can be covered in a veneer so that
it can be visible. The following article will share
with you the best uses for particle board.
Making Furniture
Cabinets
Home Accents
Flooring
Roofing
Insulation
Sound Deadening
46.
47. Hardboard, also called high-density
fiberboard (HDF), not to be confused with
'hardwood', is a type of fibreboard, which is
an engineered woodproduct
It is similar to particle board and medium-
density fiberboard, but is denser and much
stronger and harder because it is made out of
exploded wood fibers that have been highly
compressed
Hardboard is produced in either a wet or dry
process. The wet process leaves only one smooth
side while the dry processed hardboard is smooth
on both sides.
48. Perforated hardboard, also called pegboard, is
tempered hardboard that has a uniform array of
1/8" or 1/4" holes in it, into which tool-hanging
hooks or store fixtures can be placed.
It is used in construction, flooring, furniture,
home appliances, automobiles and cabinetry,
and is popular among acrylic and oil painters as a
painting surface due to its economical price
(though it must be coated with gesso or canvas
before use). Hardboard has often been used as
the surface material in clipboards, especially
older models. It is also used as the final layer in
many skateboard ramps and the half-pipe.