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    • 4. 发明授权
    • Modified atmosphere package for high profile products from upwardly formed heat shrinkable film
    • 用于从向上形成的热收缩膜的高型产品的改性气氛包装
    • US06408598B1
    • 2002-06-25
    • US09220270
    • 1998-12-23
    • H. Walker Stockley, III
    • H. Walker Stockley, III
    • B65B3100
    • B65B31/025
    • A packaging process is disclosed which includes the steps of providing a tray, providing an upper film which includes a sealant layer which is sealable to the tray, orienting the film to an orientation ratio of from about 6.0:1 about 16.0:1 positioning, a high profile product on the tray, extending the upper film above the tray and product, drawing the upper film into a concavity by differential pressure, maintaining the concave shape of the upper film while heating the film, removing gases from the space between the upper film and the tray and product, introducing a desirable gas into the space, releasing the upper film such that it shrinks toward the product and the tray while the desirable gas is retained within the space and prevents close contact of the film with the lowermost portions of the product, and sealing the upper film to the flange of the tray, wherein at least the step of heating the film shrinks the film, thereby tensioning it onto and across the underlying product. The resultant package of the high profile product provides an in-store overwrap appearance.
    • 公开了一种包装方法,其包括提供托盘的步骤,提供上层膜,其包括密封剂层,所述密封剂层可与托盘密封,将膜定向为定向比为约6.0:1约16.0:1的定位, 在托盘上形成高型产品,将上部薄膜延伸到托盘和产品上方,通过差压将上部薄膜拉成凹面,同时加热薄膜,保持上部薄膜的凹形,从上部薄膜 以及托盘和产品,将期望的气体引入空间中,释放上部膜,使得其朝向产品和托盘收缩,同时期望的气体保持在该空间内,并且防止膜与最小部分的紧密接触 产品,并且将上部膜密封到托盘的凸缘上,其中至少加热膜的步骤使膜收缩,从而将其张紧到下面的产品上并跨越下面的产品。 所产生的高档产品的包装提供了店内外包装外观。