Back to results
US 2016/0257467 A1Published application
Slurry product filled film pouches and method of making same
AssigneeThe Pictsweet Company
InventorsAlex HALL, Eldridge MOUNT
Life of this patent
Estimating the term…
Abstract
Multiple layer coextruded films of high melting temperature polymers and polyethylene permit the effective ultrasonic sealing of wet, contaminated sealing surfaces to produce water tight, leak free packages for wet product. The slurry filled packages may be used and stored at room temperatures, or may be advantageously frozen for long term storage and transport while frozen.
Claims20
A packaging film comprising at least four layers of coextruded film, wherein
- a) at least two of the at least four layers are high temperature resistant layers each comprising a high melting temperature polymer or a blend of two or more high melting temperature polymers, and
- b) at least one of the at least four layers is a low melting temperature sealing layer comprising a low melting temperature polymer or a blend of two or more low melting temperature polymers.
A sealed package formed of a packaging film which comprises a plurality of layers of coextruded film, wherein
- a) at least one of the plurality of layers is a high temperature resistant layer comprising a high melting temperature polymer or a blend of two or more high melting temperature polymers, and
- at least one of the plurality of layers is a low melting temperature sealing layer comprising a low melting temperature polymer or a blend of two or more low melting temperature polymers,
- wherein the high temperature resistant layer and the low melting temperature sealing layer are sealed together by an ultrasonic seal.
Dependencies are inferred from the claim text.