Process for enabling secondary expansion of expandable beads
摘要
<p>The present invention enables the secondary expansion of lightweight foamed beads. The foamed beads are produced using a compound comprising a compostable or biobased polyester and a physical blowing agent as well as a chemical blowing agent. Secondary expansion can be used either to lower the density of the foamed bead further or to enable expansion of the beads during molding to promote fusion. The foam beads can be produced using conventional melt processing techniques, such as single and twinscrew extrusion processes.</p>
申请公布号
EP2543489(A3)
申请公布日期
2013.10.30
申请号
EP20120159778
申请日期
2012.03.15
申请人
LIFOAM INDUSTRIES, LLC;PAWLOSKI, ADAM R;CERNOHOUS, JEFFREY JACOB;KASKE, KENT;VAN GORDEN, GARRETT
发明人
PAWLOSKI, ADAM R;CERNOHOUS, JEFFREY J;KASKE, KENT;VAN GORDEN, GARRETT