| 摘要 |
<p>The tube according to the present invention comprises: an upper sheet which has the shape of a cross and forms the upper part of the tube; a lower sheet which has the shape of a cross and forms the lower part of the tube; an internal sheet attached to both the central inside surface of the upper sheet and the central inside surface of the lower sheet and thereby holds the central part of the tube such that the central part of the tube does not swell when air is injected; a gripping means for providing grip, obtained by forming holes in upper, lower, left and right protuberances of the upper and lower sheets; and a junction part at the edges of the upper and lower sheets, the junction part being obtained by a process of sealing by high frequency heat so as to seal the tube. The present invention can be used variously including not only as a water toy but also as a pillow or cushion. Also, convenience of portability is improved due to the formation of the grips. Also, tubes may be constituted in such a way as to be connectable with each other so as to produce combined tubes of various shapes and sizes.</p> |
