- Roof tiles are
designed mainly to keep out rain, and are traditionally made from locally
available materials such as clay or slate. Modern materials such as
concrete and plastic are also used and some clay tiles have a waterproof
glaze.
-
Making
plastic in to tiles the time required for processing is much less than what
cement ones take. The weight is also less, making them easy to handle. The
plastic tile is recyclable. For changing the shape of the tile, just heat it
and transform it into the desired shape.
-
Research
and development by the Forest Products Labora-tory (FPL) and Teel-Global
Resource Technologies (Bara-boo, Wisconsin) have resulted in the creation of
a molded composite roofing system made entirely from recycled natu-ral fiber
and recycled plastic.
-
A
panelized roofing system is an ideal use for this recycled composite
technology because (1) panels can be easily molded to resemble traditional
roof-ing materials, such as cedar shakes, Spanish tiles, or slate, and (2)
the aesthetic quality of the panels provides an oppor-tunity to showcase
recycled material in a product that looks expensive but costs much less than
the traditional product it replaces.
-
In 1960's,
plastic drainage tile was developed. It came in long coils that were easily
connected together, and made laying tile a much easier job, and also did not
have the sinkhole problems of clay tile. Individual slots in-between ridges
on the plastic tile allowed for much area for water to infiltrate into the
flow line, making subsurface drainage more effective.
-
Plastic
floor covering materials can be classified into floor tiles, which may be
either composition tiles or homogeneous tiles, and long-sized sheets, which
maybe either vinyl sheets without a foam layer and vinyl sheets with a foam
layer. The market size for plastic floor covering materials by product
category in fiscal year 1995 was 7.6 billion yen (year-on-year decrease of
3.8%) for composition tiles, 11.5 billion yen (decrease of 3.4%) for regular
vinyl sheets, and 25.5 billion yen (decrease of 4.9%) for cushioned
flooring, or a total of 44.6 billion yen (decrease of 4.3%).
-
Growing
demand for plastic goods and associated production machinery – not only in
Kenya but also throughout Eastern Africa has been spurred in recent years by
economic reform and sustained economic development.
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