| 摘要 |
PURPOSE: To obtain plastic-made simple fluid-containing bags that can be easily produced at low cost and is suitable to produce a long cushioning material in such a way that a large number of continual bags are inflated all at a time of blowing operation of fluid such as air. CONSTITUTION: Two sheets of belt-like flexible films, an upper film 3 and a lower film 4, are bonded together along the edges in the direction of length of form a inside laminated film 2, and small openings 6 are formed in the upper film 3 and/or in the lower film 4 at specified intervals. Then, the inside laminated film 2 is enclosed in an external bag 1 and the external bag 1 is airtightly bonded on the inside laminated film 2 at specified intervals in the direction of length of the inside laminated film 2 so that two or more bags are formed and one end 7 of the inside laminated film 2 opens outside the external bag 1. |
