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1. 发明授权

US4223513A Packaging apparatus for forming specially shaped packages 失效
标题翻译：用于形成特殊形状包装的包装设备
公开(公告)号：US4223513A
公开(公告)日：1980-09-23
申请号：US42805
申请日：1979-05-29
申请人： Reid A. Mahaffy , Joseph M. Psota , John A. Giordano
发明人： Reid A. Mahaffy , Joseph M. Psota , John A. Giordano
IPC分类号： B65B31/02
CPC分类号： B65B31/021 , Y10S53/01
摘要： Packaging apparatus for making hermetically sealed vacuum packages from two continuous webs of plastic packaging material supplied as roll stock. The lower web is formed into product receptacles, and the upper web is applied over the receptacles to serve as the top. The apparatus includes a single-station evacuate-and-seal head where the two webs are initially sealed together around the flanges of the receptacle. The resulting package is then evacuated through a slit in the lower web, and the evacuation slit is sealed off to complete the package. During evacuation, the upper web is shifted up to engage a heated plate to raise the web temperature to a level permitting forming of the plastic material. After final sealing, the spaces above and below the packages are sequentially vented to atmosphere so as to control the formation of the upper web to produce a crowned effect, wherein a portion of the product extends upwardly a small distance above the flanges of the package.
摘要翻译：包装设备，用于从作为轧辊原料供应的两个连续的塑料包装材料卷制成密封的真空包装。下腹板形成产品容器，并且上腹板施加在容器上以用作顶部。该装置包括单站抽真空密封头，其中两个腹板最初围绕容器的凸缘密封在一起。然后将得到的包装通过下腹板中的狭缝抽真空，并将抽空狭缝密封以完成包装。在排空过程中，上腹板向上移动以接合加热板，以将腹板温度升高至允许形成塑料材料的水平。在最终密封之后，包装件上方和下方的空间依次排放到大气中，以便控制上腹板的形成以产生凸起的效果，其中产品的一部分在包装的凸缘上方向上延伸一小段距离。

2. 发明授权

US4085565A Packaging apparatus for forming specially shaped packages 失效
标题翻译：用于形成特殊形状包装的包装设备
公开(公告)号：US4085565A
公开(公告)日：1978-04-25
申请号：US748650
申请日：1976-12-08
申请人： Reid A. Mahaffy , Joseph M. Psota , John A. Giordano
发明人： Reid A. Mahaffy , Joseph M. Psota , John A. Giordano
IPC分类号： B65B31/02
CPC分类号： B65B31/021
摘要： Packaging apparatus for making hermetically sealed vacuum packages from two continuous webs of plastic packaging material supplied as roll stock. The lower web is formed into product receptacles, and the upper web is applied over the receptacles to serve as the top. The apparatus includes a single-station evacuate-and-seal head where the two webs are initially sealed together around the flanges of the receptacle. The resulting package is then evacuated through a slit in the lower web, and the evacuation slit is sealed off to complete the package. During evacuation, the upper web is shifted up to engage a heated plate to raise the web temperature to a level permitting forming of the plastic material. After final sealing, the spaces above and below the packages are sequentially vented to atmosphere so as to control the formation of the upper web to produce a crowned effect, wherein a portion of the product extends upwardly a small distance above the flanges of the package.
摘要翻译：包装设备，用于从作为轧辊原料供应的两个连续的塑料包装材料卷制成密封的真空包装。下腹板形成产品容器，并且上腹板施加在容器上以用作顶部。该装置包括单站抽真空密封头，其中两个腹板最初围绕容器的凸缘密封在一起。然后将得到的包装通过下腹板中的狭缝抽真空，并将抽空狭缝密封以完成包装。在排空过程中，上腹板向上移动以接合加热板以将腹板温度升高到允许形成塑料材料的水平。在最终密封之后，包装件上方和下方的空间依次排放到大气中，以便控制上腹板的形成以产生凸起的效果，其中产品的一部分在包装的凸缘上方向上延伸一小段距离。

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