| 摘要 |
A co-injected molded multi-layer article (100) has inner (190) and outer layers (130, 132), an interior layer (150) contained within the inner and outer layers (130, 132) and a surface portion to which a closure or other component (120) 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 (180) that avoids a breach or failure during a heat seal operation to seal an opening (107) of the molded article. |
