Sustainable Design Awards Toolkit
Section 2.2 Reduce
Design can help to directly reduce environmental impacts
by making reductions throughout the whole products’ life cycle:
Reduce: material extraction
Recycled or reclaimed materials could be used to eliminate environmental
problems resulting from extraction. There are also alternatives to
oil based plastics:
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"ECO-FOAM starch based
packaging materials are made from a renewable resource
– corn.
- Completely biodegradable and dissolves in water.
- Naturally static free and reusable, unlike plastic which is made from oil.
- Water soluble so disposal couldn't be easier, it even makes great compost.
Source: www.demi.org.uk |
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Bioplastics are
plastics made from plants, usually polymers of starch or polylactic
acid (PLA). They are being used for bags, cutlery and plates, pens,
clothing, credit cards, food packaging, agricultural films, teabags,
coffee filters, diapers and napkins.
The main brands of the plastic itself are: Biopol, Bionolle, NatureWorks
and Mater-Bi. These plastics are cyclic in their sourcing, with starch
coming from plants, particularly in Europe where the "starch mountains"
some years ago prompted the research that led to the development of
starch plastics. It is also possible to make PLA from milk residues
and even household waste.
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Barbie may soon be produced from bioplastic!
The company intends to begin the introduction of products
produced from organically derived materials. As the viability
of these new technologies is confirmed, their use will
be expanded into all brand categories and product lines.
In Barbie's 2000 campaign to be President, she said, "It's
time we take a stand to care for Mother Earth. Clean air,
clean water and a clean environment are vital to our health."
Source:
www.biothinking.com |
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In terms of material extraction and disposal alone it is thought to
be better on the environment to use reusable cloth nappies instead
of buying many disposable nappies. In terms of extraction: four and
a half trees are destroyed to keep one baby in disposable nappies.
In terms of disposal: disposable nappies have chemical granules inside
them that can absorb many times their own volume in liquid - this
material was not designed to be disposed of untreated into a landfill.
A reusable nappy has none of these problems.
Source:
www.yummiesnappies.co.uk/WhyCotton.html
Regardless of what type of nappy is used it is impossible to avoid
some impact on the environment. Reusable cloth nappies require large
quantities of electricity for washing and drying plus significant
water use and chemical usage in the form of pre-wash soakers and detergents.
www.thenappylady.co.uk/htm/environmental_costs_of_disposables.htm
suggests that this does not outweigh the problems associated with
disposable nappies, however: "It takes as much energy to make one
disposable nappy as it does to wash a real nappy 200 times."
Reduce: manufacture
Making production as energy efficient as possible and reducing material
wastage reduces the environmental impact and saves the company money.
One way of making production more efficient is by using good design
to reduce the number of components that assemble into a product. Each
component is produced separately by a machine that requires energy
to function. Reducing the number of components therefore reduces the
number of machines operating. This reduces energy usage and also removes
the environmental damage caused by the production of the machine and
its associated tools and moulds.
Ford at their Bridgend, Wales factory have installed $2.3m worth of
solar panels. The panels are 'solar skylights' that not only contribute
to the plant's power and lighting requirements, but also allow natural
daylight to reach the workspace. Covering 25,000 square metres of
the plant's roof, 26 solar units (incorporating 1540 photovoltaic
cells) have been installed. This 97 kW system provides all the lighting
requirements for the building beneath.
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Reduce: Material Use
There are several steps that manufacturers can take to reduce the
amount of material used in a product or its package. One way is as
subtle as "lightweighting" and therefore it often goes unnoticed to
the general public. Lightweighting simply means using a different
lighter resin mass or reducing the wall thickness to produce the same
thing.
A 2-litre plastic soft drink bottle used in the 1970s had a mass of
67g. Today a soft drink bottle weighs 47g.
Plastic grocery bags have been reduced in thickness by over 1/3 between
1976 and 1990 without loss of strength.
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Two examples of lightweighting
over time are shown in these graphs.
A 2-litre plastic soft drink bottle used in the 1970s
had a mass of 67 grams. Today a soft drinks bottle weighs
47 grams.
Another example of successful lightweighting is found
in plastic carrier bags. Their thickness has been reduced
by a third between 1976 and 1990 with no loss of strength.
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Manufacturers
can also offer concentrated forms of their products which occupy less
space and require less packaging.
Designers can substitute hazardous materials. This cardboard chair
by ReturDesign and the Rondine armchair by Totem Italia both avoid
the use of glues with their clever joint construction.
Source: www.biothinking.com
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The Tripp Trapp
Chair grows with the child, meaning you don't end
up with a baby chair you can't use anymore. This
increases the life span of the product, preventing
the wastage of material producing bigger replacement
chairs.
Source: www.biothinking.com
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Trannon make all their furniture from
British hardwood grown less than 50 miles from their factory,
and they use only the thinnings - narrow wood that is
cleared to make way for bigger trees and which is usually
wasted.
Source:
www.biothinking.com |
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The networked bookshelf
allows users to download books at their wish. Touch-screen
interactive books recharge on a bookshelf containing a
network linked printer. This example of dematerialization
drastically reduces material usage and distribution.
Case study by Chris Sherwin, Philips Environmental Service.
Source:
www.demi.org.uk |
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Reduce: transportation
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The Soft Air company have updated the
Sixties notion of inflatable furniture. By shifting emphasis
towards practicality, this method of reducing materials
and transport costs is now taken seriously by retail giants
IKEA and MUJI
Source:
www.demi.org.uk |
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Plaine Telephone by Stuart Walker is
designed for ease of manufacture with basic equipment.
The electronics are all off the shelf parts.
The telephone could therefore be manufactured locally,
reducing transportation. Local repairs and reuse of parts
at the products’ end of life are also encouraged by local
production.
Source: JSPD e-journal
www.cfsd.org.uk/journal |
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Reduce:
water
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'Smart sink' has a membrane bowl, which
expands and contracts as needed to minimise water use.
It also controls, calibrates and purifies water and gives
feedback on rates and levels of consumption.
Source: JSPD e-journal www.cfsd.org.uk/journal
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Reduce: energy
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The Citizen eco-drive duo watch is powered
by a mixture of solar power and kinetic movement.
Source:
www.biothinking.com |
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The VW Lupo TDI gets 98 miles per gallon.
Run it on biodiesel fuel and you have a very efficient,
solar car.
Source:
www.biothinking.com |
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Successful for its high media profile
and wider social aims, the Baygen/Freeplay wind-up radio
demonstrates that appropriate technology can address social
as well as environmental problems.
Source
www.demi.org.uk |
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Ecodesign Tools
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Toolkit Index
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