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US 5,812,725 AGranted
Method for increasing adhesion between a coating and an optical glass fiber electron beam pretreatment
AssigneeDsm N.V.
InventorJames R. Petisce
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AssigneeDsm N.V.
InventorJames R. Petisce
Estimating the term…
This invention provides a method of increasing adhesion of radiation-cured, inner primary coatings on glass optical fibers. A glass optical fiber drawing tower has a controllable variable amperage electron beam for exposing different sections of a glass optical fiber with different amperage levels of electron beam radiation. The different sections of the glass optical fiber after being exposed to the selected amperage levels of electron beam radiation are then coated with an inner primary coating composition which is finally cured by exposure to actinic radiation. Later formed sections of the same glass optical fiber can be exposed to different amperage levels of electron beam radiation and then coated and cured. The different sections of the glass optical fiber which have been coated with an inner primary coating using this method demonstrate correspondingly different degrees of coating adhesion. Reduced levels of adhesion promoter are required for inner primary coating compositions when using this method.
A method of increasing the adhesion of a radiation-cured coating contacting an optical glass fiber, said method comprising the combination of steps of:
A method of varying the adhesion between an optical glass fiber and at least one radiation-cured coating contacting said optical glass fiber comprising the combination of steps of:
A coated optical glass fiber having enhanced bonding of the coating contacting the optical glass fiber comprising:
A coated optical glass fiber having varying amount of bonding of the coating contacting different sections of the optical glass fiber comprising:
An optical glass fiber cable comprising:
An optical glass fiber cable comprising:
A telecommunications system comprising:
A telecommunications system comprising:
An optical glass fiber drawing tower for making a surface treated, optical glass fiber coated with an inner primary coating, said drawing tower being controllable to continuously adjust the adhesion of said inner primary coating to said surface treated optical glass fiber, said drawing tower comprising:
An optical glass fiber drawing tower including:
A coated glass article having resistance to coating delamination caused by moisture, said coated glass article comprising:
A method of increasing adhesion of a cured, radiation-curable coating composition to an optical glass fiber, comprising the steps of:
A method of varying the adhesion between an optical glass fiber and a cured, radiation-curable coating composition in contact with said optical glass fiber comprising the steps of:
A coated optical glass fiber comprising:
A coated optical glass fiber comprising:
An optical glass fiber cable comprising:
A telecommunications system comprising:
An optical glass fiber drawing tower for making a surface treated, optical glass fiber coated with an inner primary coating comprising:
A device for drawing optical glass comprising:
A coated glass article comprising:
Dependencies are inferred from the claim text.