Special receptacle or package – For a building component – Shingle
Patent
1990-11-30
1993-09-14
Foster, Jimmy G.
Special receptacle or package
For a building component
Shingle
206471, B65D 8102
Patent
active
052440877
DESCRIPTION:
BRIEF SUMMARY
The present invention is related to a packing container (hereinafter also called "accommodating container") suitable for packing contents (packed object) which should be protected from shock such as vibration, dropping etc., and in particular to an accommodating container of ink jet head cartridge.
So far, as a packing method to protect contents which are easily damaged, it has been proposed to pack the objects in packing material, such as paper, cardboard, foamed sheet and molded plastics such as foamed polystyrene or polyurethane, etc., to buffer the shock.
In the case of the packing utilizing a cardboard box, local strength of cardboard itself is not necessarily sufficient and when a force is applied locally, cavity or damage is often produced at such part and the effect of such force often reaches the contents.
As far as the size of the cardboard box fits to the size of the packed contents, it presents no problem but if the packed object has indentation or its size does not fit to the size of the cardboard, the shock of vibration caused by falling of the package causes a local force which leads not only to damage of the package but also to deformation or damage of the contents.
As it is with the cardboard box, when an object is packed in a box made of paper, plastic, wood etc., if the shape of the packed object does not fit to the shape of the accommodating space, the object shifts in the box as the package is transported and such shifting sometimes causes damage of the contents.
Besides, cardboard box or paper is relatively costly.
On the other hand, a method to pack the contents by wrapping them in shock buffering material, for example, by foamed sheet such as ETHA FOAM (Tradename, made by Asahi Dow Corp.) or a sheet having air foams known by the tradename of AIR PACK etc., provides satisfactory results to some extent in regard to the protection of the contents. However, they make the packing process more complicated for wrapping an object with such sheet or for packing of the object with external packing material such as a box or package. In addition, it has the drawback that the expense for packing is more costly and the wrapping of object by such packing material increases the volume of the packed object and it requires the use of a larger external packing material and more space for its transportation and storage.
Even when such sheet is used, the protection of performance of the packed object is not always satisfactory when the contents have complicated shapes.
For packing of contents which are easily damaged, another method has been used wherein foamed plastic molding with shock buffering effect is used as the shock buffering material.
For such foamed plastic, foamed urethane and foamed polystyrene are most typical, but from the viewpoint of cost, foamed styrol (styrene) is more frequently used.
Foamed styrol is easy to mold into a shape suitable for the shape of the contents and its shock buffering property is satisfactory, and therefore the protection of a packed object and fixing of it in the package can be easily done by using the casing and the protective material made of foamed polystyrene.
However, in order to obtain the sufficient buffering property of the foamed styrol molding, it is necessary to use molding with large wall thickness, and this results in the increase of volume of the packing and the requirement of more space in transportation and storage.
For example, the volume of the casing made of foamed styrol molding or the packing which uses shock buffer and the protective material to fix the position of the contents usually becomes two to three times that of the packing which employs only a cardboard box.
Such a large increase of space occupied by the packing becomes a large burden in terms of occupancy of warehouse space and distribution cost.
The strength of the foamed styrol molding is not so high by itself, but it is easily torn due to the local shock and therefore it is general practice to apply a sleeve-shaped cardboard sheet on the foamed styrol casing or pack the latter
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patent: 4901858 (1990-02-01), Anderson
Hikake Norio
Nagashima Toshiaki
Canon Kabushiki Kaisha
Foster Jimmy G.
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