MANUFACTURE OF LIQUID CONTAINER

摘要

PROBLEM TO BE SOLVED: To make transportation and waste disposal of a hollow container useful by a method wherein the interior of the container is sucked under the temperature state below the melting point and above the crystallization temperature of the material of the container after at least two or front and rear reinforcing sheets are pasted to the two opposing faces of a liquid container at blow molding, after blow molding or the like so as to produce bending habit parts in the body part of the container. SOLUTION: V-like bending habit parts 46 and 48 are provided in the opposing surfaces at a shoulder part 20. In addition,Λ-like bending habit parts 56 and 58 are provided from a bottom part 60. In the body parts 30 between the above-mentioned bending habit parts 46 and 56 and 48 and 58, longitudinal bending habit parts 40 and 42 are formed. Further, at a position, which is obtained by connecting the apices of theΛ-like bending habit parts 56 and 58, a lateral bending habit part 52 is provided. Furthermore, to the opposing surfaces, on each of which no longitudinal bending habit parts 40 and 42 and the like is provided, reinforcing sheets 90, 902 and 904 are pasted. Under the state that the gas within the container is forcibly sucked through the mouth part of the liquid container at a temperature, which is above the glass transition point and below the melting point of the material of the container and the longitudinal bending habit part 40 and 42 are pressed and tucked from both the sides of the container with pressing and tucking plates, the container is pinched from both its front and rear surfaces by the cooled pressing and tucking plates so as to be folded up.