Vibration-absorbing air sheath having improved end-closing structure

Abstract

A vibration-absorbing air sheath having improved end-closing structure includes a first and a second buffering walls, at least one first and at least one second nodes, a third buffering wall and an accommodating space. The buffering walls are constructed by air columns. The first and second buffering walls are atop heat-sealed together at each of two ends of the air sheath so as to form a binding portion and a lower flat-bottomed opening. After inflation of the air columns, the air columns of the first and second buffering walls outside the binding portion and the air columns of the third buffering wall form a triangular end buffering portion. The air columns in the end buffering portion have slanted creases for their easy upward-bending so as to make the air columns in the end buffering portion spread and provide a maximized buffering area at the end of the air sheath's ends.

Description

BACKGROUND OF THE INVENTION[0001]1. Technical Field[0002]The present invention relates to packing materials, and more particularly, to a vibration-absorbing air sheath that has air columns processed by heat sealing so that the air columns are shaped through interaction therebetween caused by air pressure and thereby has improved end-closing structure.[0003]2. Description of Related Art[0004]There has been a vacuum-based, hammock-type vibration-absorbing sheath mainly comprises: a first buffering wall, composed of a plurality of air columns that are formed by a plurality of heat-seal edges, and having one side formed with an extended edge; a second buffering wall, composed of a plurality of air columns that are formed by a plurality of heat-seal edges; a third buffering wall, composed of a plurality of air columns that are formed by a plurality of heat-seal edges, and having one side formed with an extended edge; an accommodating space, defined by the first, second and third bufferin...

AI Technical Summary

Benefits of technology

[0007]A secondary objective of the present invention is that by providing at least one of the air columns of the first and second buffering walls in the end buffering portion in the lower part thereof with at least one slanted crease, the air column is allowed to have a part below the crease bent upward against the crease, thereby closing the end of the vibration-absorbing air sheath and making the air columns in the end buffering portion with parts thereof above the crease spread out and form a flat plane, so as to provide a maximized buffering area for the end buffering portion.

[0008]Another objective of the present invention is that by making the air columns of each of the first and second buffering walls inside the binding portion include one first air column and one second air column that are adjacent to each other and have different diameters, a width of the accommodating space corresponding to the binding portion is maximized as the first air column and the second air column jostle with each other.

[0009]Still another objective of the present invention is that, that by making each of the air column lines between the air columns inside the binding portion have an inclined upper end, an edge of an opening of the accommodating space open corresponding to the binding portion is prevented from becoming wavy.

Problems solved by technology

Despite the foregoing features, the prior art is defective as the joints between the buffering walls tend to be formed as irregular, towering corners, which when receiving squeezes or impacts are likely to have their air columns bursting, and in turn make the entire buffering structure lose the vibration-absorbing function.

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