BULK-DENSITY MEASURING DEVICE FOR PRE-EXPANDED PARTICLES AND METHOD FOR MANUFACTURING PRE-EXPANDED PARTICLES

WIPO Patent Application WO/2015/056461

A1

This invention provides a bulk-density measuring device and measuring method. Said device, which measures the bulk density of pre-expanded particles, is characterized by the provision of the following: a vessel (A), the pressure inside which can be brought below atmospheric pressure so as to un-shrink, i.e. enlarge, pre-expanded particles that have shrunk; a vessel (B) that, with the pressure thereinside brought below atmospheric pressure, can be filled with pre-expanded particles that have been enlarged in the other vessel (A), thereby measuring out a given volume of said particles; a pressure-reducing means (8) that can adjust the pressure inside each vessel (A and B) to below atmospheric pressure; and a scale (6) that can weigh the pre-expanded particles filling the latter vessel (B). Using this bulk-density measuring device and measuring method, the original bulk density of pre-expanded particles, which are prone to shrinking immediately after manufacture, can be measured stably and quickly after manufacture, allowing immediate feedback with respect to operating conditions for the next production batch.

MURAKAMI KYOSUKE (JP)
OCHIKOSHI SHINOBU (JP)
YOSHIDA TORU (JP)

PCT/JP2014/060111

April 23, 2015

April 07, 2014

Click for automatic bibliography generation  

KANEKA CORP (JP)

G01N9/36; C08J9/18; G01N9/02

WO2011086938A1	2011-07-21
WO2005087475A1	2005-09-22
WO2005087475A1	2005-09-22
WO2011086938A1	2011-07-21

JP2006096805A	2006-04-13
JP2007218588A	2007-08-30
JP2010209286A	2010-09-24
JPS6326549A	1988-02-04
JPH0680816A	1994-03-22
JP2007218588A	2007-08-30
JP2006096805A	2006-04-13
JP2009161738A	2009-07-23
JP2009263639A	2009-11-12

See also references of EP 3059573A4

YANAGINO Takao et al. (JP)
Takao Yanagino (JP)

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