Device for shrinking a shrink-wrap film

Details Device for shrinking a shrink-wrap film Device for shrinking a shrink-wrap film

2005-01-04

2005-01-04

Harmon, Christopher R (Department: 3721)

Package making

Apparatus for contraction of cover by stretching or shrinking

By heat shrinking

C053S427000, C053S441000, C053S442000, C053S385100

Reexamination Certificate

active

06837031

ABSTRACT:
The invention relates to an apparatus for shrinking a heat-shrink foil wrapped in particular about a palleted object stack. in order to improve on such an apparatus so that shrinking of the foil part projectingg past upper and/or lower face is pmproved and produces an optimal fold-free shrinkage, an apparatus for shrining a heat-shrink foil wrapped in particular about a palleted object stack comprises at least one shrink device movable vertically up and down on a frame to heat and shrink the heat-shrink foil, the heat-shrink foil projecting past the upper and/or lower edge of the object stack to form an upper and/or lower shrink formation, the apparatus further comprising at least one nozzle connected to a compressed air source and aimed centrally above and/or below the object stack and generally vertically directed thereat, each nozzle having outlet openings that extend at an angle not coinciding with the flow direction inside the nozzle and that are in an annular array.

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