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US 4,889,581 AGranted
Carton sealing apparatus
AssigneeDurable Pakaging Corporation
InventorsLawrence W. Ulrich, James R. Lojewski
Life of this patent
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AssigneeDurable Pakaging Corporation
InventorsLawrence W. Ulrich, James R. Lojewski
Estimating the term…
In an apparatus for sealing the top flaps of a carton having a tape head assembly for applying a strip of self-adhesive sealing tape that extends along the upper portions of the leading and trailing end panels and across the top flaps, a tab forming device for forming a pull tab at a trailing end portion of the strip of sealing tape. The tab forming device includes a housing member having a cavity formed therein in facing relationship to the trailing end portion of the strip of sealing tape. A suction created in the cavity draws the trailing end portion thereinto so as to cause the adhesive surface of the trailing end portion to fold upon itself and form a pull tab. A means for controlling the dispensing of the tape from the roll is provided which includes a spool member which is biased into receiving contact with the outer portion of the roll.
In an apparatus for sealing the top flaps of a carton directed therethrough, said apparatus having a tape head assembly for applying a strip of self-adhesive sealing tape that extends along the upper portions of the leading and trailing end panels and across said top flaps in sealing relationship thereto, said tape head assembly including cutting means for cutting the strip of sealing tape at the trailing end thereof and tab forming means for forming a pull tab at a trailing end portion of said strip of sealing tape, said tab forming means including a housing member positioned a short distance from said cutting means having a cavity formed therein in facing relationship to said trailing end portion, and means for creating a suction in said cavity for drawing said trailing end portion thereinto so as to cause the adhesive surface of said trailing end portion to fold upon itself and form a pull tab.
Dependencies are inferred from the claim text.