公开(公告)号：US5718101A

公开(公告)日：1998-02-17

申请号：US660327

申请日：1996-06-04

申请人： David Christopher Noel ,  James Randall Mabry

发明人： David Christopher Noel ,  James Randall Mabry

IPC分类号： B65B7/16 ,  B65B53/02 ,  B65B7/28 ,  B65B31/02

CPC分类号： B65B31/028 ,  B65B61/10 ,  B65B7/164 ,  B65B7/168

摘要： A method and apparatus for enclosing a product in a tray having an outwardly extending flange is provided. A permeable web is secured to an inner periphery of flange and the secured portion is severed from the web to form a permeable lid. An impermeable web is then secured to an outer periphery of the flange and then severed from the web to form a peelable, impermeable lid. The outer periphery of the flange is protected from damage when the permeable lid is severed from the permeable web by elevating the permeable web above the outer periphery of the flange and severing the web at the elevated portion. If a fresh red meat product is to be packaged, the tray may be at least partially evacuated and then at least partially filled with a gas which is lower in oxygen content than air. Prior to retail sale, the impermeable lid may be removed to cause the packaged meat product to bloom to a red color.

摘要翻译： 提供了一种用于将产品封装在具有向外延伸的凸缘的托盘中的方法和装置。 可渗透的网被固定到凸缘的内周边，并且固定部分从网上被切断以形成可渗透的盖子。 然后将不透水纤维网固定到凸缘的外周，然后从纸幅切断，形成可剥离的不可渗透的盖子。 当可渗透盖通过将凸缘的外周边上方的可渗透纤维提升并且在升高的部分切断网时，防止凸缘的外周缘受损。 如果要包装新鲜的红肉制品，则托盘可以至少部分抽真空，然后至少部分地填充有比空气低的氧含量的气体。 在零售之前，可以去除不透水的盖子，以使包装的肉制品绽放成红色。