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Patent Searching and Data


Title:
PNEUMATIC TIRE MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2019/116757
Kind Code:
A1
Abstract:
In this pneumatic tire manufacturing method, the vulcanization process involves a first stage in which a temperature measurement probe is embedded in the slowest-vulcanizing part of a green tire, a second stage in which, by means of the temperature measurement probe, time series data is acquired that includes a prescribed number of temperature values acquired at intervals 10 seconds or less, and a third stage in which the least-squares method is used to approximate the prescribed number of temperature values included in the time series data with a linear equation and the slope of the approximated linear equation is calculated for each time series data and a coefficient curve is created by plotting these against vulcanization time; the vulcanization process is ended at the time when the inflection point in the coefficient curve has been detected that occurs at the vulcanization time when the vicinity of a target vulcanization temperature is reached. Or, in the pneumatic tire manufacturing method, the vulcanization step involves a first stage in which a temperature measurement probe is embedded in the slowest-vulcanizing part of a green tire, a second stage in which, by means of the temperature measurement probe, time series data is acquired, at intervals 10 seconds or less, of the temperatures of the green tire being vulcanized, and a third stage in which, on the basis of the time series data, the vulcanization process is ended at the time point when heat absorption by the vulcanization reaction has been detected in the vicinity of the target vulcanization temperature.

Inventors:
NAKAYAMA RINICHI (JP)
SHIMA HIDEKI (JP)
Application Number:
PCT/JP2018/040322
Publication Date:
June 20, 2019
Filing Date:
October 30, 2018
Export Citation:
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Assignee:
TOYO TIRE CORP (JP)
International Classes:
B29C33/02; B29C35/02; B29L30/00
Foreign References:
JP2016203553A2016-12-08
JP2016203483A2016-12-08
JP2007030322A2007-02-08
Attorney, Agent or Firm:
UNIUS PATENT ATTORNEYS OFFICE (JP)
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