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GENERAL MATERIALS - QUESTIONS AND ANSWERS
V. Ryan © 2010
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1. A range of products and the materials from which
they are manufactured, are listed below. Explain/describe why each
material has been selected for corresponding product.
A. Polycarbonate is ideal for
replacement security windows, as it is impact resistant . If a burgular /
vandal attempts to break into a property, by breaking the window with a
brick/rock, it will simply bounce off.
The polycarbonate is transparent and although it can be scratched, it still allows maximum sunlight through it, into the interior of a building.
It is lightweight and can be handled more vigorously than traditional glass. If dropped, it will absorb the impact and flex, rather than shattering.
B. Silver is a valuable,
precious metal and has been used in the manufacture of jewellery for
thousands of years. As a rare / valuable metal, customers automatically
appreciate its precious nature.
A variety of manufacturing techniques can be used when working with silver. These include, small scale casting and beaten metal working techniques, resulting in complex shapes. It can be soldered and joined.
When polished, it shines brightly as expected of an attractive, valuable metal.
C. Holographic card can be
used in the manufacture of a range of decorative and craft products. Hand
made holographic birthday cards is one example, gift tags being another. Metallised silver card is excellent for bright posters, cut out toys,
boxes, and display boards.
It has a 3 dimensional visual affect, reflecting light. It can be shaped, scored and formed with scissors. It can be folded to produce into boxes.
D. Degradable polymers such
as ecofilm, dissolve over time, producing water and carbon dioxide. This
means it does not pose an environmental threat. Shopping bags manufactured
from this material degrade quickly, when discarded, melting away over a
small number of weeks.
Degradable shopping bags are as strong as standard supermarket shopping bags, holding the same load, securely.
Degradable plastic shopping bags are manufactured in the same way as a typical polythene bag and can be plastic welded. Degradable shopping bags are thin film products, just as polythene shopping/carrier bags.
E. Aeroply is ideal of
producing curves and irregular shapes and forms. Layers of aeroply are
glued together whilst being securely held on to a former/mould. This is
typical of laminating.
Aeroply gives the opportunity to form unusually curved shapes that cannot be manufactured using any other material, to the same high standard. Aesthetically pleasing shapes can be the result.
Aeroply can be painted or stained. It can be glued with normal wood glues such as woodworkers resin / PVA.
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