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Perhaps the most important of the plastic
materials that may be oriented to improve physical properties is “PET”,
the abbreviation for PolyEthylene Terephthalate. The familiar PET
carbonated soft drink bottle, which has become an indispensable part
of our lives, is made by the stretch blow molding process. In fact
ASB stands for Aoki Stretch Blow, after the founder of the company.
The superb properties of PET make it ideal for packaging a whole host
of products ranging from beverages and food products to pharmaceuticals
and cosmetics.
The high strength and creep resistance of PET makes it ideal for packaging
carbonated soft drinks, while the crystal clarity emphasizes the purity
of bottled water. PET containers have many other advantages too and
are now used not only for beverages but also for food and household
products, cosmetics, pharmaceuticals and agricultural chemicals. |
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Products look good, pure and healthy. Sparkling PET bottles attract
attention.
Pure
Products taste good and smell good. PET complies with international
food contact regulations.
Safe
PET bottles are tough and virtually unbreakable. If they do fail,
they split, not shatter. Their high impact and tensile strength
makes them ideal for carbonated products.
Good Barrier
The low permeability of PET to oxygen, carbon dioxide and water
means that it protects and maintains the integrity of products giving
a good shelf life. PET also has good chemical resistance.
Lightweight
One tenth the weight of an equivalent glass pack, PET bottles reduce
shipping costs, and because the material in the wall is thinner,
shelf utilization is improved by 25% on volume compared to glass.
High strength, low weight PET bottles can be stacked as high as
glass.
No Leakage
Absolute closure integrity is possible because of the injection
molded neck finish. The absence of a weld line in the base means
that PET bottles don't leak.
Design Flexability
Suitable for containers of all shapes, sizes, neck finishes, designs
and colors.
Recyclable
Used PET bottles can be washed, granulated into flakes and reshaped
as PET bottles or employed as material for strapping, carpeting, fiber
filling, etc. Specially designed thick-wall bottles can be washed,
refilled and reused. PET is made from the same three elements (carbon,
oxygen, and hydrogen) as paper, and contains no toxic substances.
When burned, it produces carbon dioxide gas and water, leaving no
toxic residues. |
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