Method of manufacturing foam beads
Patent
US-5480599-A
Inventor
LEVEN THOMAS (DE)
TRAEGER MICHAEL (DE)
PERL HORST (DE)
Assignee
HUELS CHEMISCHE WERKE AG (DE)
Country
United States
Dates
- Priority:1992/04/09
- Grant:1996/01/02
Description
This web page summarizes information in PubChem about patent US-5480599-A. This includes chemicals mentioned, as reported by PubChem contributors, as well as other content, such as title, abstract, and International Patent Classification (IPC) codes. To read more about how this page was constructed, please visit the PubChem patents help page.
A continuous process for manufacturing foam beads using a simple apparatus, wherein the expansion agent can be easily recycled. Polymer particles and a dispersing medium are fed continuously to an unstirred mass transfer column having a high length to diameter ratio which is operated under pressure. The polymer particles and dispersing medium are subjected to thermal processing under pressure in the mass transfer column, and the resulting dispersion is sprayed into a low pressure space causing the polymer particles to expand. Accordingly, foam beads of constant quality and a uniform cell diameter and a uniform degree of expansion are manufactured without costly process means.
1992/04/09
1994/08/12
1996/01/02
1996/01/02
LEVEN THOMAS (DE)
TRAEGER MICHAEL (DE)
PERL HORST (DE)
HUELS CHEMISCHE WERKE AG (DE)
United States
B29C44/00 (inventive)
B29B9/16 (inventive, first)
B29K23/00
B29K105/04
C08J9/18 (inventive)
B29C44/34 (inventive)
B29C44/3461 (inventive, first)
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