Process for making balloon
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United States of America Patent
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Aug 13, 1991
Grant Date -
N/A
app pub date -
Sep 25, 1989
filing date -
Oct 21, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This invention relates more particularly to a process for making a balloon to be used with an endoscope in which, according to the present invention, the balloon is processed of a basic material solution including a natural rubber latex or synthetic rubber latex to which is added a sensitizer to radiation cross-linking so as to act and accelerate its cross-linking effect by irradiating ionizing radiations such as gamma (.gamma.) rays utilizing a Co-60 source upon the rubber latex mixed with the sensitizer to radiation cross-linking, which is characterized in that such the balloon can be provided without any vulcanizing process as in the conventional, process. Nevertheless the balloon is still given various excellent properties such as transparency, inflatability, tensile strength with a high elasticity in which these properties have uncomparative advantages against any conventional type balloon which had problems caused by in its inferior transparency caused by addition of vulcanizing agent and the like into the basic latex, or increased thickness of the balloon's thin film with lower content of vulcanizing agent in order to secure the transparency and prevent inferior tensile strength due to the lower content of vulcanizing agent.
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