Title:
APPARATUS FOR PRODUCING RIGID POLYURETHANE FOAM BY FROTHING METHOD
Document Type and Number:
WIPO Patent Application WO/2010/082318
Kind Code:
A1
Abstract:
An apparatus for producing a rigid polyurethane foam by the frothing method in which the supply of a compressed or liquefied inert gas as a blowing agent can be interlocked with the working of a foaming machine. The apparatus for producing a rigid polyurethane foam by the frothing method includes a blowing-agent feeder which supplies an inert gas as a blowing agent at a constant rate and a foaming means which mixes the inert gas with a polyol composition to form a foamed polyol composition and then mixes the foamed polyol composition with a polyisocyanate ingredient to discharge a rigid polyurethane foam. The blowing-agent feeder has: a pressure-reducing valve with which the pressure of the inert gas is reduced and regulated; and a needle valve with which the flow rate of the inert gas is regulated. The foaming means has a cylinder for compression by which the polyol composition is compressed and supplied. A regulator which regulates the supply of the inert gas to the foaming means has been disposed between the foaming means and the blowing-agent feeder. The regulator has been connected to a controller which senses the working of the cylinder for compression to control the regulator.
Inventors:
FUJIO AKIHIRO (JP)
Application Number:
PCT/JP2009/050375
Publication Date:
July 22, 2010
Filing Date:
January 14, 2009
Export Citation:
Assignee:
TOYO TIRE & RUBBER CO (JP)
FUJIO AKIHIRO (JP)
FUJIO AKIHIRO (JP)
International Classes:
B29C31/06; C08G18/00; B29C39/24; C08J9/12
Foreign References:
| JP2003082050A | 2003-03-19 | |||
| JP2002327439A | 2002-11-15 | |||
| JP2005119150A | 2005-05-12 | |||
| JP2007307728A | 2007-11-29 | |||
| JPH0796157A | 1995-04-11 | |||
| JP2006328232A | 2006-12-07 | |||
| JP2007217560A | 2007-08-30 | |||
| JP2007321095A | 2007-12-13 | |||
| JP2001121553A | 2001-05-08 | |||
| JP2009019103A | 2009-01-29 | |||
| JP2009007530A | 2009-01-15 |
Attorney, Agent or Firm:
UNIUS PATENT ATTORNEYS OFFICE (JP)
Patent business corporation ユニアス international patent firm (JP)
Patent business corporation ユニアス international patent firm (JP)
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