发明名称 |
METHOD OF PRODUCING COMPOSTABLE OR BIOBASED FOAMS |
摘要 |
The present invention describes compostable or biobased foams that are useful for fabricating foamed articles. The foams are produced using a compound comprising a compostable or biobased polyester and a blowing agent. Additives including plasticizers and chain extenders are optionally included in the compostable or biobased composition. These foams can be produced using conventional melt processing techniques, such as single and twin-screw extrusion processes. In one embodiment, foamed strand profiles are cooled and cut using conventional strand pelletizing equipment. In another embodiment, foamed beads arc produced by cutting the foamed strand at the face of the extrusion die and the foamed bead or strand is subsequently cooled. The resulting compostable or biobased foamed bead has a specific gravity less than 0.15 g/cm3 and the foam is compostable, as determined by ASTM D6400.
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申请公布号 |
CA2778641(A1) |
申请公布日期 |
2013.01.07 |
申请号 |
CA20122778641 |
申请日期 |
2012.06.01 |
申请人 |
LIFOAM INDUSTRIES |
发明人 |
PAWLOSKI, ADAM R.;CERNOHOUS, JEFFREY J.;KASKE, KENT |
分类号 |
C08J9/16;B29B9/06;B29C44/00;C08J9/232;C08L101/16 |
主分类号 |
C08J9/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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