| 摘要 |
A reclosable bag is formed of a first wall and a second wall of a polymeric sheet material joined to form an enclosure with a mouth defined by the wall edges. The bag has a closure for selectively opening and sealing the mouth. The closure includes a first and a second mutually interlocking profile, each of which extends along and is bonded to the internal surface of its respective first and second wall. The first and second mutually interlocking profiles are extruded from a synthetic polymeric resin material. For at least one of the first and second mutually interlocking profiles, the synthetic polymeric resin material is mixed with a blowing agent which provides the profile with a fine-celled foam structure.
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