30-06-2012, 04:48 PM
Wood Plastics Composites
Doc124 Wood Composites - Project Report.pdf (Size: 299.91 KB / Downloads: 86)
Product
The composite may be described as wood filled
plastics. The filler used is low price and scrap
polyolefines are the matrix. A small percentage of
modifiers is required to get the polyethylene or
polypropylene to wet the highly polar Wood / Rice
Husk / Agriculture waste.
The composite has the good properties of plastics
such as water resistance, extrudability and
formability. Presence of cellulosic filler keeps density
of the composite low. It is paintable using regular
enamel paints. Its scrap is recyclable
Likely Applications
Panels for interior partitions, Doors / Windows for
outdoor exposure and industrial environment. Pallets
for material handling. Pots for gardening / plantation
(decorative), Table tops, moulded drawers, shelves
etc. The product, being composed of more than 20%
Agricultural waste, may not attract excise duty.
Raw Materials
1. Agricultural waste such as wood flour, saw dust,
rice husk, cotton plant stalk powder, jute stalk
powder, etc.
2. Polyethylene or polypropylene scrap in pellet
form or as output from grinder or agglomerator.
3. A small proportion ~5% of a polymeric wetting
agent and viscosity modifier.
Extracts from Published Literature
“Veka Holdings, PA, USA is launching a composites
decking system (fencing and railing products) based
on vinyl and wood in spring 2001”.
“… Wood / Polyethylene decking is still under 5% of
the North American deck market and potential for
replacing wood is considerable …”
Michael Vatura, Trex, USA
Courtesy : Modern Plastics
David Murdock, Davis Standards business area
manager terms wood composites as “ the hottest
extrusion market today bar none”, adding that eight
Woodtruders were sold at the NPE Chicago 2000.
Mikron Industries, WA, USA views its patented wood
composite “MikronWood” as promising for decking
applications.