| 摘要 |
A container closure includes a base with a valve mount portion formed from a first thermoplastic material and a valve formed from a second thermoplastic material. The valve is bonded to the valve mount portion. A lid is hingeably attached to the base and includes a sealing rim extending from a surface of the lid and designed to engage the valve at the location where the valve seals to the valve mount portion. The engagement of the sealing rim with the valve forming a seal between the two components.
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