Plastic and nonmetallic article shaping or treating: processes – Carbonizing to form article – Agglomeration or accretion
Patent
1989-09-25
1991-08-13
Thurlow, Jeffery
Plastic and nonmetallic article shaping or treating: processes
Carbonizing to form article
Agglomeration or accretion
20415763, 264301, 264307, 264304, 427 36, 427 42, B29C 4114, B29C 3508
Patent
active
050394614
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.
REFERENCES:
patent: 2188736 (1940-01-01), Jordan
patent: 4107013 (1978-08-01), McGinniss et al.
patent: 4364879 (1982-12-01), Gut et al.
patent: 4803020 (1989-02-01), Valaitis et al.
patent: 4910233 (1990-03-01), Bell et al.
Okamoto Industries Inc.
Thurlow Jeffery
Vargot Mathieu
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