Lantech, Inc.

William H Stackhouse

An arrangement for wiping down a web wrapped on a load includes a wiper support; and a wiper including at least one strip having two ends, a thickness, a width substantially greater than the thickness, and a length extending between the two ends, at least one end secured to the wiper support, the strip extending from the wiper support in a direction along the length of the strip and being flexible in a direction generally parallel to the thickness of the strip for wiping down the web wrapped on the load by relative movement between the wiper support and the web in said direction.

Wipe down arrangement for wrapping apparatus

An arrangement for wiping down a web wrapped on a load includes a wiper support and a wiper including at least one strip doubled back along its length to form a loop, the loop being flexible in a direction generally parallel to a plane passing through the length of the strip, the wiper being secured to the wiper support and the loop extending from the wiper support for wiping down the web wrapped on the load by relative movement between the wiper support and the web in the direction generally parallel to the plane passing through the length of the strip.

A spiral wrapping apparatus provided with a mechanical closure device is used to tie the leading and trailing edges of a film web which have been overwrapped around a plurality of vertically stacked units to form a unitary package. The leading edge of material from the film dispenser is held by a clamp mechanism to a turntable. As the turntable is rotated to wrap the load, the wrapping material is stretched and the trailing end of the material is formed into a rope-like configuration which is carried on the mechanical closure device to a position adjacent the clamped leading end of material with the leading and trailing ends then being tied together. The turntable clamp mechanism releases the leading end of the film web, extends away from the edge of the turntable and clamps the trailing end of the material web behind the tie point at which time the trailing end is severed by a cutter device between the tie point and the clamp mechanism, allowing the tied ends of the wrap to be carried forward toward the wrapped load by the memory of the stretch material seeking its original state. The turntable clamp mechanism then is transported back toward the turntable edge drawing with it the new leading end of material with which to begin the next wrapping cycle.

Stretch wrapping apparatus with mechanical closure

An apparatus and process for automatically wrapping packages with a full-web or spiral overwrap. The apparatus includes a film handling assembly in which stretched film is wrapped around the load rotated by a turntable. When the load is stopped in a home position a cutting and sealing assembly is transported into the film path, engaging the film and displacing it out of its original dispensed path. Rotatable clamps mounted on the turntable are rotated upward to grab the lower portion of the stretched film web while the sealing mechanism of the assembly engages the trailing edge of the film web to hold it against the film wrap, after which a cutter blade of the assembly is extended into the film web, severing the film web so that the load can be transported off the conveyor with the sealing mechanism pressing the trailing edge of the film onto the package wrap. The sealing mechanism is retracted and the cutting and sealing assembly is transported away from the film web leaving a new leading film edge held by the turntable clamps to begin the next wrap cycle.

Growing community of inventors

Louisville, KY, United States of America

William H Stackhouse