Packaging method and transport packaging as well as a drone for receiving the packages

The invention relates to a packaging method, a transport package, and use of the packaging method for transporting products by means of a drone. According to the invention, a product to be packaged is placed in an open inner wrapping that is pretensioned on elastic traction cables in order to hold the product approximately centrally in an outer package. After insertion, the wrapping is closed and evacuated until it lies tightly against the product, and the traction cables are thereby further tensioned.

RELATED APPLICATIONS

The present invention is a U.S. National Stage under 35 USC 371 patent application, claiming priority to Serial No. PCT/DE2017/000361, filed on 1 Nov. 2017; which claims priority of DE 10 2016 012 963.8, filed on 1 Nov. 2016, the entirety of both of which are incorporated herein by reference.

The invention relates to a packaging method and a transport package as known from EP 2 504 241 B1, for example, and a drone for appropriately accommodating packages.

Known transport packages are made of plastic or corrugated cardboard, for example. To protect a product to be transported therein from impacts or moisture, padding materials or hygroscopic packets are also included and shipped with the package. These protective materials are disposed of after shipment, and are seldom reused. Despite such padding, the packaging is not always completely effective. Often, sufficient padding is not always provided on all sides of the product, or not enough padding remains on all sides of the product due to vibrations during transport. The hygroscopic material has only a certain capacity, and this capacity is sometimes exhausted during transport by sea, for example. The product, despite being packaged with toxic materials, may thus become wet, and upon arrival the product, which is now defective, may be considered to be unsafe.

Known drones have at least one base body, one rotor, and optional support legs.

The object of the invention is to improve the packaging, optionally with provision of a new package, in particular also by transport by means of drones.

This object is achieved by a packaging method and a transport package according to the independent main claims. In addition, a drone that utilizes the package principle according to the teaching of the invention achieves the object of accommodating packages in drones.

Advantageous embodiments are disclosed in the subclaims, the description, and/or the figures.

In a packaging method according to the invention, initially a product to be packaged is placed in an open inner wrapping of a package, during or after which the inner wrapping is pretensioned on elastic traction cables by pulling from the outside, or is suspendable on the outside on outer tensioning points using elastic traction cables, for example. The product is thus held approximately centrally in an outer package or in an outer frame. After the product is inserted, the inner wrapping is closed and predominantly evacuated until the inner wrapping lies tightly against the product. The evacuation results in additional stretching of the traction cables. The at least predominant evacuation thus further stretches the traction cables, and positions the product even more securely, approximately in the center of the package.

No cushioning material is necessary for this purpose. In addition, no hygroscopic material, which is toxic and would have to be included with the product, is necessary to keep the product dry. In order to guarantee continuous sealed transport of the product, a negative pressure must still be present upon arrival, which is the purpose of the predominant evacuation.

In one advantageous embodiment of the packaging method, the traction cables are not suspended in the manner of a folding box made of plastic or a corrugated cardboard package, such as in a conventional package, but instead are suspended in support legs of a drone. This type of drone packaging does not have outer walls, but may possibly have a stretched fabric between the support legs. The support legs of the drone are thus the exterior of the package. It is particularly preferred that after the evacuation, the support legs may be spread out further in order to optimize the centering in a protected area, in particular depending on the size and shape of the product, or also to possibly improve the aerodynamics of the drone only during flight.

Another advantageous transport package, having an outer container and an evacuable inner wrapping, has tensioned cables between the outer container and the inner wrapping, at least one of the tensioned cables having a reversibly stretchable design.

Another advantageous transport package has a preferably removable vacuum pump that is connected to the inner wrapping. In another advantageous embodiment, a vacuum attachment is connected through the outer container, from the inner wrapping to the outside, and is closable from the outside.

For product transport, a drone according to the invention having at least one base body, at least one rotor, and at least two support legs has a wrapping below the base body that is closable in a watertight and gastight manner, and in particular is tensioned between the at least two support legs, but preferably tensioned between the base body and four support legs. A product to be transported is placeable in this wrapping, which lies tightly against the product after an evacuation operation. During evacuation, the dimensions of the wrapping shrink from the relaxed state to a smaller size due to the suction, so that the suspensions stretch and the product is thus securely held beneath the drone by tensioning. Even in the event of a fall, the product can be well protected in this way when, according to one particularly preferred embodiment, a stretched fabric is tensioned at the bottom between the support feet.

Accordingly, the invention achieves numerous advantages by use of the packaging method according to the invention, or a transport package according to the invention, for transporting a product by means of a drone.

FIGS. 1 through 4show three exemplary embodiments of transport packages according to the invention.FIG. 5shows a drone according to the invention according to one advantageous exemplary embodiment.

FIG. 1shows the outside of a folding carton as an outer package or outer container1, with a horizontal articulated joint in at least two side walls, in each case as a hinge2between two side wall halves, to allow the folding carton to be folded or set up in the manner of an accordion.FIG. 1shows the set-up folding carton with multiple traction cables6going from the corners and some side walls toward the center. In the center, an inner wrapping4is held against the traction cables6, and the traction cables6pull the wrapping4apart. The wrapping is thus held for use of a product, the product8to be transported, which inFIGS. 3 and 4is illustrated as a heart.

In a further method step, the tensioned inner wrapping4is closed and evacuated. In the process, the wrapping4due to its shrinkage increasingly draws up against the traction cables6. The traction cables6are thus further tensioned beyond a base tension. The product, which is tight in the wrapping4due to the evacuation, is protected from moisture and is held approximately centrally in the folding carton by means of the traction cables6, so that impacts against the outer walls of the folding carton should not affect the product. However, if the impacts were so severe that the product was damaged, the damage to the folding carton would be clearly visible.

A vacuum bag having a quick-pull closure is particularly preferably mounted on rubber cables as traction cables6. The product8to be shipped is subsequently introduced. A vacuum is applied with a hand pump5, which may remain in the carton during transport. The traction cables6are increasingly tensioned until the product8is centered in a reusable transport package (FIG. 4). To prevent insufficient evacuation, according to one preferred embodiment a spacer, preferably a screen7that prevents closure of the suction valve on the inside, for example by overlapping of the wrapping4or by contact with the product8, is situated on an inner side of a suction valve.

The packaging of a product8to be protected is thus carried out more quickly. The overall transport package may be stored in a space-saving manner. Bulky or toxic protective material such as silica gel is not necessary. The product is reliably protected from moisture in the vacuum bag, the inner wrapping4. Upon unpacking, it is apparent from the package if the vacuum, intended for sufficient negative pressure, has not been maintained. Individual accommodation of various types of products is achieved without having to use costly molded packaging.

In one preferred embodiment of a transport package according to the invention, the vacuum prevailing in the inner wrapping4is monitored by means of a pressure sensor, not illustrated in greater detail, similarly as for known vehicle tire pressure monitoring systems. In this way the vacuum, and thus the integrity, is independently monitorable across a transport chain having multiple service providers.

FIG. 5shows a drone10having a divided base body18, multiple rotors14, and at least four support legs12. According to the invention, in this exemplary embodiment, using the same reference numerals but with provision of an apostrophe, a wrapping4′ that is closable in a watertight and gastight manner is accommodated under tension beneath the base body18, tensioned with traction cables6′ toward the support legs12and the base body18. A product8′ is placed in the wrapping4′, which is shrunk around the product, thus further tensioning the traction cables6′. The illustrated exemplary embodiment also shows that the drone10has articulated joints19, for example between the support legs12and the rotor arms16, to be able to further spread the support legs12so that the overall drone structure may preferably flatten out during flight.

LIST OF REFERENCE NUMERALS

1outer container, in particular a folding carton2hinge4,4′ inner wrapping, in particular a vacuum bag5hand pump6,6′ traction cable, in particular made of rubber7screen8,8′ product10drone12support leg14rotor16rotor arm18base body19articulated joint