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Bamboo Laminates

 

Vertical bamboo laminates are manufactured from strips of bamboo that is bound together vertically. Vlaminate
   
Horizontal bamboo laminates are manufactured from strips of bamboo that is bound together horizontally. hlaminate

 

 

Uses:

Horizontal laminates are widely used as flooring material. Vertical laminates can be used as door and window frames. Both types of laminates are used for furniture as a solid wood substitute.

 

 

Bamboo Chair bamboo round table centre table
Chair designed by NID Ahmedabad Round table designed by NID Ahmedabad Centre Table designed by IPIRTI

 

Process Flow Chart
 
Cutting arrow Cross Cutting arrow Splitting & Sizing arrow 4 Side Planing
  arrow
Hot Pressing arrow Sorting & Gluing arrow Air-Klin Drying 8-10% arrow Boiling in Water
Splitting & Carbonization
arrow  
Board & Floor Shaping arrow Sanding arrow Painting Acrylic/ Ureathane UF
Stabilization
arrow Checking & Packaging

 

 

 
Bamboo Laminates - Manufacturing process
cutting Cutting – Matured bamboo culms with a diameter of over 90 mm should be harvested following the prescribed silvicultural practices cross cutting Cross cutting – The culms are cut into required lengths using cross cutting machine up to the length of the bamboo where the outer diameter is 90 mm.  Bamboo with a diameter less than 90 mm poses problem in the splitting operation.
       
Splitting Splitting and sizing -  Bamboo culms cut into required lengths are split into strips of 19-20 mm in splitting and shaping machines 4-side planning Four-side planning – Bamboo strips are shaped in a 4 side planning machine to the correct dimensions.  This helps in producing laminates without much gap between strips
       
boiling Boiling – Boiling strips is a key procedure in the manufacture of laminates.  Boiling removes starch and thereby improve the resistance to borer attack.  Preservative and bleaching chemicals can also be added in desired quantities during the boiling process to further improve durability and appearance. Boiling is done in vats for about 2 hours.
carbonization Carbonization (Steaming) – For carbonization, an optional step or darkening the color of strips to brownish, strips are steamed in a pressure vessel for about 2 hours. Steaming also removes starch from the strips and  in addition to imparting a brownish color to the strips.
       
drying Drying – Bamboo strips which are boiled/steamed are dried in a kiln to a moisture content of 8-10 per cent.  Drying is done at a temperature of 70 – 800C sorting Sorting and Gluing – Dried strips are sorted to reduce the colour differences among the strips so that finished laminate has even colour. Urea formaldehyde resin is applied to the strips using adhesive applicator.
       
hot pressing Hot pressing – Hot pressing is done in a special press at 1050C and with a specific pressure of 10 kg/cm2 vertical pressure and 2.5 kg side pressure for horizontal laminates; and 10 kg/cm2 side pressure and 2.5 kg vertical pressure for vertical laminates. Pressing time depends upon the thickness of the laminates to be manufactured.
       
floor shaping Board and floor shaping – These are done using four side grinding machine and double end cutting and shaping machine. sanding Sanding – Boards are sanded in a sanding machine to smoothen the surface for further finishing the surface.

 

 

Comparision of Mechanical Properties of Bamboo Wood and Teak

 

Property

Unit

Bamboo Wood(Vertical Laminate)(Bambusa bambose) Teak @ 12% Moisture Content 
Density Kg/m3 715 604
Modulus of Rupture N/mm2 75 94
Modulus of Elasticity N/mm2 10970 11720
Block shear Strength N/mm2 11 9
Compressive Strength N/mm2 72 52

 Screw withdrawal Strength

1.      Face

2.      Edge

N

 

 

4540*

3624

 

 

3900

2881

 

 

Bamboo Mat Board | Bamboo Mat Corrugated Sheet | Bamboo Mat Tray | Bamboo Match Stick

Bamboo Laminates | Bamboo Mat Veneer Composite | Bamboo Housing

Pre-fab Bamboo House | Bamboo Mat Ridge Cap | Bamboo Mat Moulded Skin Board

 

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