发明名称 |
THERMOFORMABLE FOAM SHEETING FOR PRODUCING OPEN CONTAINERS |
摘要 |
<p>The invention relates to a thermoformable sheeting consisting of a foam material or containing at least one layer of a foam material. The inventive sheeting is particularly applicable for thermoforming cups or trays for packaging and/or consuming food stuffs, by drawing or deep drawing the sheeting and expanding the foam material. The foam material of the inventive sheeting consists of a polypropylene blend containing between 50 and 100 % of high melt strength polypropylene, h as a density of 0.1 to 0.7 g/cm3, preferably between 0.25 and 0.5 g/cm3, and a cell number of from greater than 300 to 3000 cells per mm3, preferably between 800 and 2500 cells per mm3. The inventive sheeting can be drawn with a high drawing ratio (e.g. 1.5) and expanded to be formed into containers even with difficult shapes, whereby no drawing problems arise and the containers produced show a homogeneous opaqueness.</p> |
申请公布号 |
CA2245706(C) |
申请公布日期 |
2006.01.24 |
申请号 |
CA19972245706 |
申请日期 |
1997.01.31 |
申请人 |
CONVENIENCE FOOD SYSTEMS B.V. |
发明人 |
ROLLE, JEAN-CLAUDE;PITTET, MICHEL |
分类号 |
B65D1/00;C08J9/228;B65D1/26;C08J5/18;C08J9/04;C08L23/10 |
主分类号 |
B65D1/00 |
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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