Patent ID: 6586060
Filing Date: 2003-07-01
Classification: B29C,B32B,B65D,Y10T

Abstract:
A thin-walled laminated synthetic resin body for a liquid container, comprising first and second thin-walled synthetic resin layers, each having a curved surface portion and a projection, said projection extending outwardly from a predetermined region at an edge of said curved surface portion, wherein first and second layers are laminated to each other with said curved surface portions bulging out in a same direction, said first and second layers are integrated with each other at the edges of said curved surface portions and at edges of said projections, and said first and second layers are separable from each other at regions exclusive of said edges of the curved surface portions and projections so that said curved surface portion of one of said first and second layers is separated from the curved surface portion of the other of said first and second layers and reversed when a liquid is charged, causing said curved surface portions to bulge out in the opposite directions, respectively, and thereby defining an inner space for containing a liquid between said curved surface portions, wherein said first and second layers are made of a single synthetic resin sheet, and connected to each other in a configuration folded at an edge region of said curved surface portions which is positioned at a side opposite to said projections, said folded edge region forming a bottom of a container when filled with a liquid.