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    • 41. 发明公开
    • Containers having upper and lower sections of different thicknesses and extrusion blow-molding methods to form same
    • 容器具有用于其制备不同厚度的上部和下部以及挤出吹塑成型工艺。
    • EP0391510A1
    • 1990-10-10
    • EP90300100.6
    • 1990-01-04
    • Robbins, Edward S., III
    • Robbins, Edward S., III
    • B65D1/44
    • B29C49/54B65D1/26B65D1/44
    • A plastic container (10) having base (12) and sidewall (14) portions is provided with corrugations (16) as a unitary part of the sidewall portion (14) so as to rigidify the same and thus impart self-supporting capabilities thereto. The sidewall portion (14) is of a thickness that would not be capable of supporting itself without the unitary corrugations. The upper edge of the sidewall preferably includes a unitarily formed rim (18) which assists in maintaining the sidewall (14) in its generally tubular condition (and thus more easily facilitates the placement of articles in the container). The container may be closed by a flexible and gatherable terminal portion (20) which is an integral extension of the rim (18) or the upper edge of the sidewall (14). The containers of the invention are formed by an extrusion blow-molding technique using an appropriately configured blow mold (60).
    • 具有基部(12)和侧壁的塑料容器(10)(14)的部分是带有波纹(16),其侧壁部分(14)的一个整体部分,以便刚性化相同,因此赋予自支撑能力于此。 侧壁部(14)是一个厚度并不会是能够支撑本身没有单一波形磨耗。 侧壁的上边缘优选地包括一体形成的轮辋(18)中保持在它的基因反弹管状条件侧壁(14),这有助于(并因此更容易促进了物品在容器中放置)。 该容器可以由作为轮辋(18)或侧壁(14)的上边缘的整体延伸的柔性和折皱的端子部(20)全部被关闭。 本发明的容器通过使用在适当配置的吹塑模具(60),在挤出吹塑成型技术形成。