CLOSURE COATING

Elastomeric closures, such as pharmaceutical vial stoppers are coated by plasma polymerization of a lower alkane to reduce the coefficient of friction of the closure and thereby facilitate handling of the closures. Application of the coating at a low polymerization rate limits adverse effects of the...

Full description

Saved in:
Bibliographic Details
Main Author BABACZ, ROBERT, J
Format Patent
LanguageEnglish
French
German
Published 20.08.1997
Edition6
Subjects
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
BABY COMFORTERS
CHEMISTRY
COMPOSITIONS BASED THEREON
CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICALPURPOSES
DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY
DEVICES FOR RECEIVING SPITTLE
DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGINGPHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL ORADMINISTERING FORMS
GENERAL PROCESSES OF COMPOUNDING
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
PERFORMING OPERATIONS
PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL
SPRAYING OR ATOMISING IN GENERAL
THEIR PREPARATION OR CHEMICAL WORKING-UP
TRANSPORTING
WORKING-UP
Online AccessGet full text

Cover

More Information
Summary:Elastomeric closures, such as pharmaceutical vial stoppers are coated by plasma polymerization of a lower alkane to reduce the coefficient of friction of the closure and thereby facilitate handling of the closures. Application of the coating at a low polymerization rate limits adverse effects of the coating on leak-resistance of the stopper. Stoppers (80) are subjected to a lower alkane gas in a rotatable drum (10) which may also be rocked in an arc. Helical coil (58) produces sufficient rf energy to form a low plasma gas from the lower alkane which polymerizes on the stoppers as the drum is rotated.
Bibliography:Application Number: EP19950940690