Becton Dickinson and Company Limited

Shel McGuire

Joel L Williams

Susan L Burkett

Yong-Jian Qiu

Yong-Jian Qui

A method for sequentially depositing a barrier composition film as a barrier on a substrate. The film is useful for providing an effective barrier against gas permeability in containers and for extending shelf-life of containers, especially plastic evacuated blood collection devices.

Process for barrier coating of plastic objects

Syndiotactic polypropylene is blended with isotactic polypropylene and the blend melt processed into medical articles. The blends have molding cycle times which are up to 12 times shorter that for pure syndiotactic polypropylene.

Process for medical articles of syndiotactic polypropylene

A method for sequentially depositing a silicon oxide based film as a barrier on a substrate. The film is useful for providing an effective barrier against gas permeability in containers and for extending shelf-life of containers, especially plastic evacuated blood collection devices.

Molded tubular medical articles of blended syndiotactic and isotactic

An irradiated plastic article of reduced gas transmission has a coating of silicon oxide on a surface thereof. A method to reduce gas transmission through a plastic article includes depositing a coating of silicon oxide thereon and irradiating, either prior to or subsequent to depositing the silicon oxide.

Plastic articles of reduced gas transmission and method therefor

Method to reduce gas transmission

A molding process for syndiotactic polypropylene includes holding the melt at a process temperature of about 27.degree. to 77.degree. C. to achieve a cycle time of less than 150.degree. C. and a haze value for a 2 mm thick article of less than 38%.

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Omaha, NE, United States of America

Shel McGuire