Package making – Methods – Applying a partial cover
Patent
1986-12-12
1988-07-12
Sipos, John
Package making
Methods
Applying a partial cover
53441, 53461, 53556, 53567, 53585, 206386, 206597, 108 535, B65B 1102
Patent
active
047561386
DESCRIPTION:
BRIEF SUMMARY
This invention relates to wrapping loads, groups of articles of regular form such as boxes, bags and the like in a substantially enveloping wrapper of plastic film.
In the materials handling field there has been a number of developments over the years. There has been shrink wrapping, stretch wrapping and stretch-and-shrink wrapping for the wrapping of loads on pallets. There have been pallet cages and pallet based containers to hold goods. There has been racking for use in stores to support loaded pallets so that other loaded pallets can be stored thereon. The present invention incorporates features from many of the foregoing and, as will be readily understood from the following description, the commercial advantages that flow from the proposed invention are substantial.
Broadly, the invention provides a method of wrap protecting goods, comprising the steps of providing a frame having uprights held at their upper and lower ends in fixed spacial relationship to define a storage area where goods to be wrapped can be placed with one of the uprights having a rotational portion adapted to grip wrapping material and rotatable in a first direction and restrained against rotation in the opposite direction, placing a panel of wrapping material around the uprights to encircle said storage area, gripping the wrapping material with the rotatable portion of said one upright and applying a rotational torque to it to produce a required degree of tension in the panel of wrapping material and then discontinuing the application of the torque to allow the restraint against de-tensioning rotation of the rotatable portion to become effective.
The invention further provides a goods protector comprising a frame made up from a plurality of uprights adapted at their upper and lower ends to have those ends respectively engaged with an upper rigid member and a lower rigid member whereby the uprights are located in a fixed spacial relationship, at least one of said uprights includes a portion which is rotatable in a first direction to apply tension to a wrapper of plastic film when placed in encircling relationship around the uprights and when gripped by the rotatable portion so as to draw the wrapper tightly around the frame and rotation preventing means associated with the rotatable portion to prevent it from rotating in the direction opposite to said first direction.
The invention in several forms will now be described with reference to the accompanying drawings in which:
FIG. 1 is an exploded perspective view of a typical arrangement of a first and a second form of the invention,
FIG. 2 is an enlarged fragmentary perspective view of a corner connection between an upright and a corner of a pallet,
FIG. 3 is a schematic view in plan of a goods protector according to the invention with a plastic wrap bag thereover,
FIG. 4 is a view similar to FIG. 3 after the bag has been tensioned and locked in that condition,
FIG. 5 is a fragmentary perspective view illustrating a representative form of rotatable upright and its associated handle,
FIG. 6 is a view similar to FIG. 5 showing the handle stowed in a locked manner to prevent de-tensioning of the bag,
FIG. 7 is a sectional elevation of an assembled further form of a tensioning upright,
FIG. 8 is a sectional elevation of the rotatable portion of the upright of FIG. 7,
FIG. 9 is a front view of the gripping member of the upright of FIG. 7,
FIG. 10 is a side view of the gripping member of FIG. 9,
FIG. 11 is a plan view from above of the gripping member of FIG. 7,
FIG. 12 is a side elevation of another form of upper rigid frame for the goods protector,
FIG. 13. is a side elevation of a component of an upper rigid frame made of disconnectable components,
FIG. 14 is a plan view of a component to mate with the component of FIG. 14,
FIG. 15 is a side elevation of the FIG. 14 component,
FIG. 16 is a plan view of one form of rigid lower frame, and
FIG. 17 is a side elevation of the frame of FIG. 16 when looking in the direction of the arrow 17 of FIG. 16.
FIG. 1 is an exploded perspective view of
REFERENCES:
patent: 181052 (1876-08-01), DeGray
patent: 3495375 (1970-02-01), Burhop
patent: 4061391 (1977-12-01), Violette
patent: 4354333 (1982-10-01), McArdle
patent: 4605456 (1986-08-01), Annis
LandOfFree
Method and apparatus for wrapping does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for wrapping, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for wrapping will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-657737