Stock material or miscellaneous articles – Structurally defined web or sheet – Nonplanar uniform thickness material
Patent
1991-10-02
1994-08-23
Loney, Donald J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Nonplanar uniform thickness material
428 2, 428174, 428184, 428220, 428332, 493342, 493352, 493354, 493464, 493967, 206814, 264167, 264286, 264505, B32B 328, B31B 114
Patent
active
053406389
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a bulk packaging material, a packaging unit made from it, and a process and apparatus for producing them.
In packaging breakable articles such as glass, ceramic or the like, or precision mechanical instruments and machines, it is known to fill the space between the applicable article and the shipping container or box with volume-filling packaging material. Expanded shaped parts such as plastic chips are used, for example, as the bulk packaging material. Plastic filler material of this kind must be manufactured separately, which is expensive, and it must be destroyed again in some way, which for certain types of plastic causes considerable environmental pollution. It is also known to use wood shavings as the packaging material, but such material is not easy to handle, because it is not a pourable material. Furthermore, even wood shavings must be made separately from a raw material that would be used in some other way. A packaging material made of helical linear strips of paper, made by wadding up a packaging paper drawn endlessly from a roll of paper, and cutting it up, is also known from British Patent 1,300,816. Once again, such packaging material is not ecologically sound, because it is made from new packaging paper. Furthermore, these helical paper strips form a fairly interconnected mass, because like wood shavings, the strips tend to catch on one another, so that once again, this packaging material is not pourable.
A packaging unit is also known from German Utility Model 87 16 083, which comprises a wrapper or paper and chopped straw or the like poured loosely into it. In this packaging unit, the wrapper is embodied either as a cohesive, matlike pad made of two sheets of paper placed upon one another and stitched in a checkerboard pattern, or in the form of a single pad made from a double strip of paper whose loose paired edges are joined together. Pads of this kind are complicated and expensive to manufacture and to fill. Moreover, if it is to hold chopped straw, the paper for the wrapper must be especially sturdy and must be provided with an especially sturdily bonded edge to prevent the chopped straw from piercing the paper. If the chopped straw did pierce the paper, it could escape through the tiniest opening, which can cause problems, particularly in the case of machines provided with air openings, packaging parts shipped in grease, and the like, if the chopped straw gets into the bearings of such machines. In other words, a packaging unit broken down in this way into its individual parts not only involves work for the receiver of a shipment containing this packaging unit but may also cause damage.
SUMMARY OF THE INVENTION
An object of the invention is to provide a bulk packaging material and a packaging unit provided with it that can be manufactured at favorable cost and that in an ecologically sound manner makes use of existing material previously intended directly for destruction or for recycling. Furthermore, a process and an apparatus for producing such bulk packaging materials and packaging units are disclosed.
To attain this object, chips of cardboard, in particular of packing cardboard, which are formed by cutting flat, preferably used packing cardboard lengthwise and crosswise, and the bulk volume of which is increased by copings and/or bent-over portions and/or peaks and/or recesses are provided, as is a packing unit comprising a wrapper, loosely filled at least to a substantial proportion with the bulk packing material made from a web of paper, in which the wrapper is formed by the web of paper shaped in the manner of a helical roll, the adjacent, helically extending long edges of which web are joined overlapping one another, and in which the wrapper is closed at both ends in the manner of a sack, and as is a process in which the cardboard, in particular packaging cardboard, is comminuted (cut) and is deformed to increase the bulk volume of the chips forming the packaging material, as well as an apparatus having a device
REFERENCES:
patent: 1995057 (1935-03-01), Ellis
patent: 3074543 (1963-01-01), Stanley
patent: 4557716 (1985-12-01), Ottaviano
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