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1. Overview
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Steel can is one of the most widely
used containers in our daily lives, accounting for
49% of the packaging container market in Korea.
In general, there are beverage cans, sanitary cans,
industrial cans, pressure vessels, general cans,
etc. The Korean can market has begun to expand drastically
since the 1960s when the government designated it
as a strategic export industry. Also, such factors
as the rising income level in rural areas, the fostering
of military industry and the airlift of food to
Korean troops fighting in Vietnam played to the
benefit of can industry development. Korean can
manufacturers formed a technological alliance with
the U.S. and Japanese counterparts, contributing
to the development of 3-piece cans before taking
part in the production of 2-piece cans in the 80s. |
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We are continuously working to enhance
our competitiveness by reducing the gauge of steel cans
and developing new technologies which allow us to produce
a variety of can shapes in order to accommodate different
demands and tastes of customers. |
2. Product Features
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Steel, aluminum, glass and PET are mainly
used as container materials. Among these, the advantages
of steel are as follows; |
High Quality
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Steel has easy drawability (bending,
press, welding, etc ) and can be manufactured in
various shapes including round, triangular and rectangular.
In addition, it has a certain degree of strength,
which enables better handling of internal pressure.
Steel cans block out light penetration completely.
They are also hermetically sealed so they are appropriate
for long-term storage. Moreover, it is very effective
in promoting a product image since a variety of
colors can be printed on its outer surface.
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Environmental Friendliness(Steel consumes less energy during
manufacturing, compared to other materials)
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Classification
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Steel Cans
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Aluminum Can
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Energy Consumption for
the Production of a Can
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674 kcal
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991 kcal
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Excellent Recycling
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During can production, steel uses
less energy compared to other materials. Also, a
magnetic separator separates a large amount of steel,
enhancing the recycling rate and eventually contributing
to the protection of environment. |
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Recycling Rate by Container ('2000)
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Steel Cans
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Aluminum Can
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Bottle
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PET
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68%
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54%
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48%
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20%
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3. Manufacturing
Process
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Steel cans are mainly divided
into 3-piece cans and 2-piece cans according to their
manufacturing methods. The classification becomes more
complex if drawing methods and usages are included. |
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Types
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Drawing Method
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Usage
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Manufacturing Method
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3-Piece CAN
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Welding
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Beverage cans, food cans, infant formula cans,
general cans, etc
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This is the most common can manufacturing
method. Tin plates are cut then printed. The body
is then welded with a top and a bottom.
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2-Piece CAN
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Drawing
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Cans for agricultural and fisheries
products
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Pre-printed tin plates are cut
according to specific standards before drawing.
The ratio of diameter to height is restricted
to 1:1 or less.
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D&I (Drawing & Ironing)
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Beverage cans
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Cups are punched out from huge
coils of steel. After drawing, cans are ironed
out to full length before being formed and printed.
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DRD (Drawing & Redrawing)
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Food cans
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Cups are made from huge
coils of steel in the first round of drawing.
Then they go through re-drawing. Generally, the
ratio of diameter to height is around 1:1.5.
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DTR (Drawing & Thin Redrawing)
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Beverage cans, food cans
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This is the manufacturing process
that combines the merits of D&I and DRD methods.
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2Piece Line
3Piece Line
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