초록 ▼

A sealed container comprising a cup and lid and a method for sealing such a container is disclosed. The cup has a lip with a raised sealing bead along its length. During sealing, the raised sealing bead compresses, thereby stretching the adhesive layer on the lower portion of the lid out of the way

A sealed container comprising a cup and lid and a method for sealing such a container is disclosed. The cup has a lip with a raised sealing bead along its length. During sealing, the raised sealing bead compresses, thereby stretching the adhesive layer on the lower portion of the lid out of the way and forming a direct welded seal with the heat-resistant layer of the lid. The adhesive to either side of the sealing bead forms an adhesive seal between the lid and the remaining portion of the lip. This type of double seal is particularly effective in forming a durable, consistent seal when product is present on the lip of the container. The welded seal is also well suited to situations when the cup may be warped or the sealing bead is otherwise caused to be higher along some portion of its length than along other portions.

대표청구항 ▼

1. A container, comprising:(a) a cup with an open top; (b) a lip circumscribing the open top of said cup; (c) an elongated sealing bead on the surface of said lip, wherein said sealing bead is compressible with respect to said lip; and (d) a lid that is directly welded to said sealing bead and adher

1. A container, comprising:(a) a cup with an open top; (b) a lip circumscribing the open top of said cup; (c) an elongated sealing bead on the surface of said lip, wherein said sealing bead is compressible with respect to said lip; and (d) a lid that is directly welded to said sealing bead and adhered to said lip adjacent to said sealing bead by adhesive.