发明名称 |
Encapsulated barrier for flexible films and a method of making the same |
摘要 |
The present invention relates to a film structure and a method of manufacturing the same. More specifically, the film structure may include a barrier material made from EVOH, nylon or other thermally sensitive barrier material encapsulated by a first adhesive material. The barrier material and the first adhesive material form a barrier layer and a first set of adhesive layers when coextruded. The barrier layer and the first set of adhesive layers may be coextruded at the same or a similar temperature to form a first extrudate. The extrudate may be encapsulated by or otherwise coextruded with a second adhesive material to form a second extrudate at a higher temperature than the first extrudate that then may be formed into a flat sheet via a die. The first set of adhesive layers protects the barrier layer from high temperatures and long residence times related to the coextrusion/lamination process that may degrade the barrier layer. In addition, acid terpolymer consisting of ethylene/methyl acrylate/acrylic acid adheres a barrier material of EVOH to outer layers of the film structure.
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申请公布号 |
US2003087057(A1) |
申请公布日期 |
2003.05.08 |
申请号 |
US20020325002 |
申请日期 |
2002.12.20 |
申请人 |
BLEMBERG ROBERT J.;PETKOVSEK GREGORY L.;PERRE CHAD M. |
发明人 |
BLEMBERG ROBERT J.;PETKOVSEK GREGORY L.;PERRE CHAD M. |
分类号 |
B32B7/02;B32B7/12;(IPC1-7):B65D1/00 |
主分类号 |
B32B7/02 |
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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