发明名称 |
Methods of thermoforming non-self-supporting polymeric films and articles made therefrom |
摘要 |
A thermoforming method and objects prepared using the thermoforming method are described. Non-self-supporting, polymeric films are initially formed into a three-dimensional shaped film on a male mold and then transferred to a female mold while being supported by the male mold. The three-dimensional shaped film can be further thermoformed, reinforced, or a combination thereof on the female mold. The resulting object has a substantially uniform thickness across a major surface. The method can preserve the surface quality of the polymeric film used to prepare the three-dimensional objects.
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申请公布号 |
US7507363(B2) |
申请公布日期 |
2009.03.24 |
申请号 |
US20040491802 |
申请日期 |
2004.04.05 |
申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
MEYER DANIEL E.;CALVERLEY KAREN J.;ENGELEN PAUL S.;JOHNSON MICHAEL A. |
分类号 |
B29C51/00;B29C51/08;B29C43/00;B29C51/14;B29C51/26;B29C51/36;B29C65/48;B29C71/00;B32B15/08;B32B27/08;B32B27/40;B32B33/00 |
主分类号 |
B29C51/00 |
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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