Home         Product Range  

: Jollyboard is a hard brown sheet material 2.5 to 9mm thick, manufactured from wood fibres. It is standard hardboard which is dense, highly compressed wood fibre sheet material, very smooth on one side and a mesh pattern on the reverse.

Related Documents : Regulation : British Standard 1142 "Fibre Building Boards Part I 1971" and Indian Standard 1658: "Specifications for Fibre Hardboards" include all available International standard and give the procedure for sampling. The standards include test levels for five properties: density, thickness, length and width, water absorption and modulus of rupture. The standards also include appendices giving dimensions and tolerances and superior test level for these properties.

Description

Composition and manufacture : Wood is reduced to fibres which are then felted and hot pressed to form sheets, with the primary bond derived from the felting and inherent adhesive properties of fibres.

Sizes : Sheet sizes generally available are : 1220 mm x 2440mm (4� x 8�), 1220 mm x 1830 mm (4� x 6�). Other sizes can be obtained as per order.

Thickness available are 2.5, 3, 4.5, 6, 8 and 9 mm

Production tolerance : Permissible deviations in length/width and thickness from manufacturers stated sizes are specified to Table 1 and 2 of IS 1658 and in Table 3 of BS 1142: Part 2. Smaller tolerances than those specified can be obtained by agreement.

Weight : weight of boards varies according to brand. Typical weights (kg/m2) are 2.9 to 3 for 3 mm thickness, 4 to 4.4 for 4.5 mm and 5.8 to 6 for 6 mm

Density : is generally within the range of 800 � 1200 kg/m3

Appearances : Surface texture is usually smooth on one side with a fine mesh pattern on the reverse. Colour ranges from light gold to dark brown.

Special surface finishes : Besides the usual smooth surface Jollyboard is available in moulded textures and perforated surface.

Special boards available : Prepared for industrial painting, regular painting, plastic faced, printed wood grains, etc.

Climate Effect : Like other timber-based products, standard hardboards are hygroscopic and their dimensions change in response to changes in humidity. If these changes take place after the boards have been fixed they may cause bowing. To avoid this the moisture content of the board my first need to be adjusted to that of the surrounding air by �conditioning�.

 

 

 

Look at what you can do with JOLLYBOARD HARDBOARD

  • Jollyboard is used for Automobile Door Panel and Interior
  • wall and ceiling linings, panelling, partitions
  • Shoe Heel
  • Joinery, kitchen units, furniture
  • Chalk boards
  • Television and radio backs
  • Mirror and photo frame backs
  • Packaging boxes
  • Automobile caravan and rail coach interiors
  • Floor coverings, floor underlays
  • Facing flush doors and
  • In shop fitting, display and exhibition work.

Biological 

Vermin infestation : Board will not normally by attack by rodents or by wood-boring insect common in India. Anti � termite treated boards are also available. Fungus resistance laboratory tests indicates that the inherent decay resistance to common species of Basidiomytes (�dry rot� and �wet rot; fungi) is equal to or better than that of unrefined wood-based sheet material and broadly comparable with �moderately durable� timber. Similar tests on resistance to microfungi (soft rot) indicate that hardboard manufacturer from softwood species is more resistant than unrefined wood-based sheet materials, but boards made from hard woods are somewhat less resistant. Superficial mould growth (which though unsightly does not destroy wood-based materials) is not readily supported on any type of hardboard.

Thermal : Thermal conductivity (k) : varies according to brand but is approximately 0.14 w/m�C.

Acoustic: Perforated hardboard fixed to battens absorbs sound as a vibrating panel as well as by resonating, and its performance can be modified by fixing a porous absorbent behind the hardboard. The absorbents are generally insulating boards mineral wool tiles etc.

 Behaviour in use : The data below give general round figure values accumulated from laboratory test result, together with IS 1658 and BS 1142 values where applicable

 

 

 

 

 

 

 

 

 

 Structural Properties
Property Thickness

Range of value        (kg/cm�)

 IS 1658 min. value (kg/cm �) BS 1142 min. value (kg/cm�)
Modules of Rupture           Bending strength

             3.0           5.0           6.0

300 - 500

300

              380(450) 300(350) 300(350)
Compression Strength    Parallel to surface           Perpendicular to surface          200          700-1000    
Tensile Strength              Parallel to surface                             Upto 4.5   Over 4.5                   240 -300    160 - 240     
Perpendicular to surface   6 - 15    
Modules of Elasticity (E)   30000 - 50000               
Shear Strength              Panel shear                    Tensile shear                 Block shear                  4.5           4.5            4.5                 120 - 160     30 - 40        30-40    
For further details of test methods (see IS 2380 Parts I to XXI), methods of test for Wood Particle Boards and Boards from other Lignocelluloses Materials and IS 1734 (Parts I to XX) : �Methods of test for Plywood.�
Impact resistance Thickness (mm) Height of drop (mm)
Smooth face up

3

70 - 120
Mesh face up

3

69 - 90
Test method : IS2380 (Part X) and IS 1734 (Part XVIII) and BS 4512 methods of test for clear plywood
Hardness Figures
Method Thickness (mm) Result
Brinell 3 and 4.5 800 kg/cm�
Jankaball 3 and 4.5 950 kg
A B Defibrator 3 and 4.5 460 kg/cm�

Test Methods : IS 2380 (Part XI) �Surfaces hardness�.

Wear : Some brands are suitable for floor surfaces subjected to light domestic traffic

Fire

Fire resistance : The contribution to the fire resistance of a structure is proportional to the thickness of hardboard. For example a 6 mm wall lining or sheathing will contribute at least ten minutes fire resistance. See IS 1734 (Part III).

Combustibility : as defined in IS 1734 (Part  III) and BS 476 : Part 4

Ignitability: not easily ignitable as defined in IS 1734 and BS 476 Part 5.

Spread of Flame : Class 3 as defined in IS 1734 and BS 476 Part 7 when undercoated.

Further treatment can be applied to achieve compliance with higher spread of flame requirements. Class 1 and Class 2 can be obtained by impregnation during or after manufacture. Class 1 can also be obtained by painting the surface in the factory or on site with a flame retardant intumescent paint.

Effect of relative humidity change from 40% to 90% at 27�C
% increase in length                        and width range of values              0.13-0.35 % increase in thickness                    range of values                                  2-9
Water absorption: Changes after 24 hours immersion.
Thickness mm Max. mean absorption by weight (%) Max. mean thickness swelling (%)
  Range of Values IS 1658 Values BS 1142 Value Range of Values BS 1142 Value I
3 20 - 40 40 30(20) 7 - 20 25 (15)
4.5 20 - 40 40 26(16) 4 - 15 23 (13)
6 20 - 30 30 26(16) 3 - 15 23 (13) 
I - Bracketed figures show 'Superior' test levels. 

Durability: Weathering : Standard hardboard both painted and unpainted subjected to weathering showed no sings of deterioration.

Test method: IS 2380 (Part xx ) � Accelerated weathering cyclic test for exterior use.

Effect of chemicals : not affected by most common chemicals.

WORKING CHARACTERISTICS :

Standard hardboard  is consistent, easily � handled material which can be worked with normal hand and machine wood working tools. Standard hardboard can readily be curved in any one direction, the smaller radii being achieved by hot, wet, bending. It can be bonded with all wood-working adhesive and nailed and screwed in the manner of other wood based sheet materials. Light sanding of the sieve side helps in attaining a rigid bond. It can decorated easily with commercial paints and coating and can readily be faced with other sheet materials.

Applications, Designs and Sitework

In some situation Boars with properties to superior levels or boards with flame retardant characteristics may be necessary. In other applications the duo-faced, perforated moulded or pre-finished boards my be required. The Principal design consideration include the provision of the minimum number of supports commensurate with the thickness of the boards, and that cutting and sitework is kept to a minimum by utilizing the wide range of the sheet sizes available. Particular attention should be given to the need for conditioning before fixing. Jolly Board like other wood product expands and contracts with humidity changes. It is essential to humidity. The recommended procedure is by applying water to the back of a sheet using a wet cloth. Use half a litre of water for a 3 mm and 1 litre of water for 6 mm sheet 8� x 4�. The sheet should then be stacked back to back and left overnight. Common carpenter�s tools may be used for drilling, punching etc. and a fine toothed saw can be used for cutting. Jolly Board can be fixed to the wall. Recommended fixing centers are for 3 mm� 300mm cc (12�) for 4.5 mm� 400mm cc(16�) for 6 mm-500 cc (20�). Nails used should be non rusting. Distance between nails on the edges should be 100mm for the intermediate studs.

HOME | PROFILE | PRODUCTS | ISO 9001:2000 CERTIFICATE | CONTACT US