发明名称 |
METHOD FOR PRODUCING FOOD PACKAGINGS |
摘要 |
A method for producing food packagings from biodegradable foam material, in particular trays for use as disposable plates or dishes, is described. This involves providing a starting material that consists of or contains an organic cellulose ester or mixed cellulose ester, in particular cellulose acetate, and subjecting the starting material to a pretreatment to reduce the moisture content. By the beginning of the subsequent melting process, the moisture content is kept to, or below, a fixed limit. The pretreated starting material is melted and subsequently made to expand to obtain a foam material of a flat form. This is then followed by the foam material obtained being stored, to allow a second foaming agent to diffuse into it, and heated, in order to bring about renewed expansion. The heated foam material is thermoformed to form the food packaging. |
申请公布号 |
EP2838940(A2) |
申请公布日期 |
2015.02.25 |
申请号 |
EP20130735185 |
申请日期 |
2013.03.28 |
申请人 |
INDE PLASTIK BETRIEBSGESELLSCHAFT MBH;FRAUNHOFER GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. |
发明人 |
FERON, FRANK;VAN LUCK, FRANK;KESSELRING, ANNELIESE;MICHELS, CARMEN;WODKE, THOMAS;ZEPNIK, STEFAN |
分类号 |
C08J9/04;B29C44/26;B29C51/08;C08J9/08;C08J9/12;C08J9/14 |
主分类号 |
C08J9/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|