Stock material or miscellaneous articles – Structurally defined web or sheet – Nonplanar uniform thickness material
Patent
1993-07-27
1995-07-11
Loney, Donald J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Nonplanar uniform thickness material
428184, 428186, 206584, 206814, 493967, B32B 328, B65D 8102
Patent
active
054319854
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention concerns a low-density material element for use as protective packaging of packagable articles in a packing container, consisting of a multilayer body comprising a corrugated material, lined on one side, with the corrugations of the layers extending in the same direction, and in which in the direction of layering, the neighbouring corrugated layers lie adjacent one another with a common lining layer without interlocking with one another and without being compressed, the extention length of said body, in a direction perpendicular to both the corrugation extension and the layering direction, being several times its layering thickness.
DESCRIPTION OF RELATED ART
The use of corrugated material pieces or corrugated material bodies as packaging is well known. Such elements have a fixed form. They are either portions cut from a corrugated material body or in the form of a rolled material that contains no hollow space. A desirable flexible adaptation of its shape to that of articles to be packaged in containers is not or, on applying a considerable pressure to the bodies surface, only slightly possible, wherein in the latter case, the corrugated material layers become compressed and also destroyed. Apart from these, packaging materials made of plastic are also known, which are expensive to manufacture, have high raw material costs, are harmful to the environment and are connected with disposal problems.
SUMMARY OF THE INVENTION
The task of the invention is to provide elements of the kind described above which are flexible to such an extent that they can be formed into a wide variety of concave or groove shaped cross-sectional contours, such that they can serve as a complete substite for plastic elements.
This object is achieved in connection with the features of the material element mentioned above, by the fact that the material body is held together with a singly positioned fixation such that the neighbouring corrugated layers lie loosely adjacent one another without being compressed and are slidable relative to one another in a direction perpendicular to the corrugation extension, on being bent in a plane towards the body interior. The material elements according to the invention can be produced in large quantities and very cheaply, since in mass production they can be cut from half-finished bodies that, in particular, are made entirely of recycled waste paper. They can be produced in a wide variety of dimensions. Due to their flexibility, they can be universally employed as protective packaging against knocks for all kinds of articles. In doing this, they form flexible nests or cushions that mould to edges, corners, projections and the like, wherein they take on e.g. an L, U, T, I, S or P shaped cross-sectional profile. A fundamental advantage attached to this is that the corrugated layers are neither squashed nor destroyed on forming a profile, so that the cushioning properties of the corrugated material structure can be optimally exploited and the material element can also be reused, in which case it can take on other cross-sectional forms.
BRIEF DESCRIPTION OF THE DRAWINGS
Particularly useful and advantageous embodiment forms and possibilities of the invention are defined in the subclaims and will be described in greater detail in the following description with reference to the embodiments represented in the schematic drawings. There is shown in
FIGS. 1 and 2 axonometric views of material elements according to the invention, which have formed contours extending with an S-, L- or U-like shaped cross-sectional profile,
FIGS. 3 and 4 a cross-sectional view of flexible material elements according to the invention that can be formed into a wide variety of cross-sectional shapes on application of pressure to its external surfaces,
FIGS. 5A to 6B a cross-sectional view of material elements according to the invention with a stiff or rigid layer defining the bent form, disposed on the element,
FIGS. 7A and 7B a material element according to the invention that is div
REFERENCES:
patent: 1333884 (1920-03-01), Usinger
patent: 1619011 (1927-03-01), Agar
patent: 1902312 (1933-03-01), Rous
patent: 2575898 (1951-11-01), Tadinger
patent: 2947459 (1960-08-01), Pregent
patent: 3042278 (1962-07-01), McCullough
patent: 4771893 (1988-09-01), Liebel
patent: 4882893 (1989-11-01), Spencer et al.
Edm. Romberg & Sohn (GmbH & Co.) KG
Loney Donald J.
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