发明名称 |
HEAT-SEAL FAILURE PREVENTION METHOD AND ARTICLE |
摘要 |
A co-injected molded multi-layer article has inner and outer layers, an interior layer contained within the inner and outer layers and a surface portion to which a closure or other component may be heat-sealed. The article is molded by co-injecting the inner, outer and interior layer materials into a mold cavity of a mold. The interior layer material is caused to flow along a steam line offset from the zero velocity gradient of the combined material flow and biased toward a material flow for forming an outer wall of the multi-layer article. The resultant molded multi-layer article contains an interior layer located in a heat sealable region that avoids a breach or failure during a heat seal operation to seal an opening of the molded article.
|
申请公布号 |
US2012135171(A1) |
申请公布日期 |
2012.05.31 |
申请号 |
US201113303758 |
申请日期 |
2011.11.23 |
申请人 |
SWENSON PAUL M.;KORTEC, INC. |
发明人 |
SWENSON PAUL M. |
分类号 |
B32B27/00;B29C45/16;B32B1/02 |
主分类号 |
B32B27/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|