How are Condoms Made?
|Courtesy of DUREX® the World's Best Selling
||DUREX® condoms are made from the finest
quality natural rubber latex. However, before the latex even reaches the
manufacturing plant, it undergoes comprehensive quality control tests
to ensure that it conforms to the stringent specifications of DUREX®.
Once the latex passes quality control tests, it is processed into a useable
form. Because latex is a natural material (very similar to milk in many
of its physical properties), it can curdle or go sour. Stabilizers, preservatives
and vulcanizing agents are added and the latex is checked again for the
quality and consistency. This process is known as 'compounding'.
||The next stage in manufacture is 'dipping'. The compound
latex is fed into temperature controlled tanks into which a continuous
line of glass formers are dipped. As the formers pass gently through the
tanks they pick up an almost invisible layer of latex film. The latex
coating is then dried using filtered air to prevent atmospheric contamination.
After drying, the formers are dipped once more and dried again.
On completion of the dipping process, the open ends of the newly formed
condoms are rolled to form a rim or bead. The condoms, while still on the
formers, are then passed through an oven to vulcanize the latex. Before
the condoms are removed from the formers by high pressure jets of water,
they undergo a soaking process to loosen the condoms from the former. They
are then dried.
||Although DUREX® condoms are now ready for packaging,
they will not reach that stage until they have undergone a series of stringent
Quality Control tests. This adherence to high quality standards has helped
make DUREX® the leading condom brand in the world today. With a product
such as a condom, where quality is vitally important to the user, it is
essential that every reasonable effort is made to ensure the reliability
of DUREX® condoms.
Electronic testing as well as the tests specified by national and international
standards, DUREX® condoms are electronically tested. This involves each
condom being stretched over a metal former and subjected to a voltage current.
Any breakdown of the film is measured and minor flaws, even ones far too
small to be detected by the human eye, result in the condom being instantly
||Perhaps the most impressive test is the Air Inflation
Test, which is carried out each and every day on samples of each batch
of DUREX® condoms. This is the test of elasticity and strength that involves
a DUREX® condom being filled with air until it reaches bursting point.
Typically, a DUREX® condom holds approximately 40 litres of air, equivalent
to 9 gallons of water, before bursting.
After electronic testing is complete, Quality Control samples are taken
from each batch, filled with 300ml of water, and suspended for 3 minutes.
Afterwards, they are examined for minute fluid leakage by rolling them on
blotting paper. If more than a small number displaying flaws are found,
then the entire batch is rejected and scrapped.
Additional samples are checked for size and thickness. Further samples are
tested to destruction for physical strength. Some of these samples are artificially
aged at accelerated temperatures, as an assurance of their quality at the
end of their 5-year product life.
Durex condoms - For a hundred million reasons.