MANUFACTURE OF TUBULAR BODY AND MEASURING METHOD FOR ELECTRIC RESISTANCE OF TUBULAR BODY

PROBLEM TO BE SOLVED: To provide a measuring method for the electric resistance of a tubular body capable of continuously measuring the electric resistance of the outer surface of the tubular body without impairing the tubular body. SOLUTION: In a method wherein a thermoplastic resin composition is...

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Bibliographic Details
Main Authors OTSU NORIHIRO, MIWA MASANOBU, MORIKOSHI MAKOTO
Format Patent
LanguageEnglish
Published 03.10.1997
Edition6
Subjects
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PERFORMING OPERATIONS
PHYSICS
PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE
TESTING
TRANSPORTING
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Summary:PROBLEM TO BE SOLVED: To provide a measuring method for the electric resistance of a tubular body capable of continuously measuring the electric resistance of the outer surface of the tubular body without impairing the tubular body. SOLUTION: In a method wherein a thermoplastic resin composition is shaped like a tube by melt extrusion molding, conductive rollers 21 on one side and conductive rollers 21' on the other are provided outside a tubular body T, in parallel and in the direction of intersecting the haul-off direction perpendicularly. The conductive rollers 21 and 21' are brought into contact with the outer surface of the tubular body T to measure the electric resistance of the tubular body T and extrusion equipment and/or haul-off equipment are controlled by using a measured value of the electric resistance.
Bibliography:Application Number: JP19960060771