THIN LAMINATE OF SYNTHETIC RESIN FOR LIQUID CONTAINERS AND METHOD OF MANUFACTURING THE SAME

摘要

A thin laminate of a synthetic resin for forming a liquid container, comprising first and second thin layers (10, 20) of a synthetic resin having curved wall portions (11, 21), and projecting portions (12, 22) formed by outwardly extending predetermined regions of edge sections of the curved wall portions (11, 21), the first and second layers (10, 20) being laminated so that the curved wall portions (11, 21) project in the same direction, joined with each other into a unitary body at their edge portions (13, 23) extending along the curved wall portions (11, 21) and projecting portions (12, 22), and formed separable from each other at the regions other than the edge portions (13, 23), the curved wall portion (21) of either one (20) of the first and second layers (10, 20) being inverted as it is separated from the curved wall portion (11) of the other layer (10) when a liquid is placed between the layers, to project the wall portion (21) in the direction opposite to the direction in which the wall portion (11) projects, whereby an inner space for holding a liquid is formed between the two curved wall portions (11, 21), this laminate being high in the degree of freedom of designing the shape of a container, and capable of being formed easily to a desired three-dimensional shape in accordance with the use of the container and manufactured simply at a low cost by using conventional production equipment.