Stock material or miscellaneous articles – Structurally defined web or sheet – Nonplanar uniform thickness material
Patent
1996-12-11
1999-04-13
Loney, Donald
Stock material or miscellaneous articles
Structurally defined web or sheet
Nonplanar uniform thickness material
428178, 428184, 428198, 156210, 156290, 156292, 156322, 425336, 425363, B32B 328, B32B 2714, B65C 925, A01J 2100
Patent
active
058940464
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates in general to paperboards used for packaging goods and, more particularly, to a high strength double-ply corrugated paperboard including upper and lower liners and multiple-ply corrugated mediums disposed between the liners, thereby capable of exhibiting a high compressive strength while having a small thickness to minimize the packaging size, and effectively absorbing outside shock applied to the package to keep the packaged goods more safe.
BACKGROUND ART
As well known to those skilled in the art, various fragile goods needing to be handled with care, for example expensive bottled cosmetics, electronic and electric products such as television sets, are conventionally packaged using rigid boxes with shock-absorbing materials. The above shock-absorbing materials are used for absorbing the outside shock applied to the packaged goods and thereby protect the goods from the shock.
In the prior art, both expanded polystyrene formed according to the contours of the goods to be packaged and cardboard mounts folded into given shapes or partially cut out sufficient enough to hold the goods in the package boxes are generally used as shock-absorbing materials. When the goods to be packaged are heavy goods such as refrigerators, the packaging materials for such goods need to be provided with both excellent shock absorption and rigidity sufficient enough to absorb the outside shock and to bear the weight of the heavy goods. In order to achieve the above object, the package boxes for such heavy goods are preferably bottomed with wooden pallets.
The expanded polystyrene used as a shock-absorbing material has an advantage in that it is easily formed and suitable for mass production. However, the expanded polystyrene is breaks easily and induces static electricity. Therefore, the expanded polystyrene not only causes environmental contamination due to its broken pieces, but also is scarcely used for packaging precision goods due to the static electricity. Otherwise stated, use of the expanded polystyrene as the shock-absorbing material is limited as it remarkably reduces the expected life of the packaged goods.
The cardboard mounts folded into given shapes or partially cut out sufficient enough to hold the goods in the package boxes are problematic in that they are not suitable for mass production. Furthermore, the above cardboard mounts have inferior durability and generate paper dust while packaging the goods. Due to the inferior durability as well as the paper dust, the above cardboard mounts may exert a bad influence upon the expected life of the packaged goods.
In order to rectify the above problems, package cases formed using pulp molds have been recently proposed and used. However, the above package cases need to be formed using individual molds even when the cases are produced on a small scale. As the molds should be produced by highly skilled workers one by one, the package cases are problematic in that it is very difficult to produce the cases. Another problem of the above package cases is resided in that they are expensive.
As people are recently becoming environmentally conscious, used packaging materials need appropriate treating to prevent them from causing environmental contamination. However, it has been noted that treatment of various plastic packaging materials such as expanded polystyrene is very difficult as the above plastic packaging materials can not be recycled. The above plastic packaging materials will cause environmental contamination and exert a bad influence upon the ecosystem when they are simply discarded. Therefore, environmentally conscious people tend to avoid using such plastic packaging materials. Thus, demand for the above plastic packaging materials is reduced.
DISCLOSURE OF THE INVENTION
It is, therefore, an object of the present invention to provide a high strength corrugated paperboard in which the above problems can be overcome and which has an improved structure suitable for not only reliably protecting the packaged goods, but al
REFERENCES:
patent: 1119146 (1914-12-01), Ferres
patent: 3935360 (1976-01-01), Brown
patent: 4228943 (1980-10-01), Tanabe et al.
Kim Do Wook
Kim Ki Jeong
Daeyoung Packaging Co., Ltd.
Loney Donald
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