Claims
- 1. A process for wrapping a web of stretched material on a load comprising a plurality of stacked units to form a unitary packaged load comprising:
- a. placing a roll of stretchable material on a dispenser;
- b. holding the leading end of a web of said stretchable material adjacent a load;
- c. causing relative movement between said roll and said load to wrap said web of material around said load;
- d. stretching said web of material as it is transported to the load;
- e. collapsing said web of material into a configuration having roped edges of concentrated bands of material and an unroped connecting membrane, the width of the configuration being less than the width of the original material web;
- f. moving said material dispenser and stopping said material dispenser's movement at regular intervals to form a plurality of stretched spaced apart configured collapsed web material wraps around said load at the junction between stacked layered units, the connecting membrane of each configured wrap covering the junction between stacked units with each roped edge of the web material indenting and grabbing the outer surface of a different unit to join the unit layers; and
- g. severing said collapsed stretched web material from said dispensing means.
- 2. A process as claimed in claim 1 wherein said material web has an original width of ten inches.
- 3. A process as claimed in claim 2 wherein said material web when collapsed ranges from two to five inches in width.
- 4. A process of making a unitary package of a load comprising a plurality of vertically stacked substantially equally sized units by wrapping stretched material around the load comprising:
- a. placing the leading edge of a film web from a roll of stretchable film web material mounted to a moveable dispensing means, adjacent to a load;
- b. collapsing said web material to form a configuration having two concentrated bands of film defining roped edges and a connecting unroped membrane, the width of the collapsed web being less than the width of the web in its original state;
- c. rotating the load to remove the stretched web material from the dispensing means through a collapsing mechanism;
- d. applying tension to the stretched film web material so that the web material is stretched as it is transported to the load;
- e. moving the dispensing means in a direction along the axis of the rotating load a predetermined distance;
- f. stopping the dispensing means after it has traveled a predetermined distance in said direction to dispense and position at least one collapsed wrap around the surface of the load so that one roped edge of the collapsed formed film web material engages a first stacked unit and grips into the outer surface of the unit and the other roped edge engages a second stacked unit positioned over the first stacked unit and grips into the outer surface of the unit with the connecting unroped membrane web material covering the joint formed between the two stacked overlying units causing the respective engaged layers to be joined;
- g. continuing movement of the dispensing means in the same direction along the axis of the surface of the load a second predetermined distance; and
- h. stopping the dispensing means to form at least one other wrap around the load in the same configuration as the previous wrap so the another joint formed between stacked units is wrapped as previously set forth.
- 5. The process of claim 4 including the step of moving the dispensing means in an opposite direction from its first direction after it has reached one end of the load to form a plurality of similarly configured wraps on the wrapped surface of the load.
- 6. The process of claim 4 including the step of sensing the distance traveled by the dispensing means so that the dispensing means stops a predetermined distance suitable to allow it to cover the joints between overlying stacked units.
- 7. The process claimed in claim 6 wherein said sensing means comprises means mounted to said carriage moving means which counts gear teeth to ascertain the distance of travel.
- 8. A process of making a unitary package by stretch wrapping a load comprising a plurality of stacked units comprising the steps of:
- a. placing the leading end of a roll of stretchable plastic film web material from a dispensing means adjacent a load;
- b. collapsing said plastic film web material to form a configuration having two ropes connected by an unroped membrane, the width of the configuration being less than the width of the original web;
- c. providing relative rotation between said dispensing means and said load to transport the stretched plastic film web material from the dispensing means;
- d. applying tension to the stretchable plastic film web material so that the plastic film web material is stretched;
- e. wrapping the collapsed stretched film web material around the junction of two layers of stacked units to form at least one wrap around the surface of the load with one roped edge of the collapsed plastic film web material engaging one horizontal layer of upper vertically stacked units, the other roped edge engaging an adjacent lower layer of stacked units, and the connecting unroped membrane covering the junction between the two layers to stabilize and maintain vertical orientation between unit layers thus effectively joining the layers to each other, preventing destruction of the load by horizontal shear forces and vertical forces;
- f. continuing movement of the dispensing means until the dispensing means is positioned adjacent another unit layer junction;
- g. stopping the dispensing means and dispensing a second wrap of collapsed plastic film web material in the manner previously set forth substantially parallel to the first wrap; and
- h. severing said material from the dispensing means.
- 9. The process of claim 8 wherein said wraps are spaced apart from each other and connected by a diagonally positioned web of film on one side of the load to form a substantially "Z" shaped configuration on one side of the load.
- 10. The process of claim 8 including the step of reversing the direction of movement of the film dispenser and subsequently stopping the movement of the film dispenser to dispense at least one wrap around previous wrapped areas of the load.
Parent Case Info
This application is a continuation of application Ser. No. 125,275, filed Feb. 27, 1980, now abandoned.
US Referenced Citations (5)
Number |
Name |
Date |
Kind |
4079566 |
Stoecklin |
Mar 1978 |
|
4204377 |
Lancaster et al. |
May 1980 |
|
4235062 |
Lancaster et al. |
Nov 1980 |
|
4248031 |
Del Pozo |
Feb 1981 |
|
4255918 |
Lancaster et al. |
Mar 1981 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
2256871 |
Sep 1975 |
FRX |
Continuations (1)
|
Number |
Date |
Country |
Parent |
125275 |
Feb 1980 |
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