| 摘要 |
<p>PURPOSE:To realize easy manufacture and highly accurate measurement by preparing a hollow bag that includes unsmoothable, wrinkled sheets joined and bonded in the smallest peripheral area. CONSTITUTION:Two wrinkled sheet materials made of thin, soft and low stretching material are formed into a hollow bag 1 by heat seal adhesion. In this case, the seal adhesion area is <=0.2mm in width as far as possible. A small amount of gas or liquid is inserted into the bag 1 to be seized between the contact faces and the inner pressure within the bag 1 is measured by a pressure gage through a hollow tube or wiring cable. Thus, by making the bag 1 to be wrinkled, the bag 1 becomes softer than that of a material to be used and its adhesion also becomes appropriate, so that surfacial adhesion due to slight moisture, etc., may be prevented by furrows. In addition, the seal adhesion surface is made extremely small as far as possible and is adhered by heat sealing, thereby forming softer hollow bag 1 to perform highly accurate measurements.</p> |
