METHOD FOR MANUFACTURING SHRINKABLE FILM FOR CONTAINER PACKAGING

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing a shrinkable film for container packaging having a high monoaxial shrinkage in the transverse direction and in addition having heat insulation. SOLUTION: An adhesive 4 is coated on one side of a thermoplastic shrinkable film sheet 1 having a monoaxial shrinkage in the transverse direction. After a nonwoven fabric 5 made of a non-adherent material is laminated on a wet surface coated with the adhesive 4 so that the main flow direction of fibers 5a of the nonwoven fabric can be orthogonal to the shrinkage direction of the shrinkable film sheet 1, the shrinkable film for container packaging 2 is manufactured by unifying the shrinkable film sheet 1 and the nonwoven fabric 5 through drying the adhesive 4 to embed the fibers 5a of the nonwoven fabric 5 on the side of the shrinkable film sheet 1 in the adhesive 4. The shrinkable film sheet 1 is made of OPS or PET. The shrinkable film for container packaging 2 is formed in a tube shape and then the tube is placed around a container to be packed. Subsequently they are passed through a shrink tunnel to make the shrinkable film for container packaging 2 shrink in the transverse direction at a high shrinkage based on the shrinkage property of the shrinkable film 1. Heat insulation by the nonwoven fabric 5 is also provided. COPYRIGHT: (C)2003,JPO