Tetra Laval Holdings & Finance S.a.

Yukihisa Kumeta

Yasuyuki Moriyama

Katsuhiro Yamaguchi

Masashi Watanabe

Shigeo Katsumata

Katsuji Magota

Yousuke Kanamori

An object is to prevent roughening of a rupture surface of a packaging material ( ) that is formed upon opening of a spout ( ) through application of an external force. There are provided transport means for transporting a layered packaging material ( ) that is formed of a paper substrate and resin films and that has a rupture area ( ) at a location corresponding to that of opening means; a seal unit for sealing the packaging material ( ); and heating means disposed on the upstream side of the seal unit in the transport direction of the packaging material ( ) such that the heating means is opposed to an innermost layer of the packaging material ( ) in order to heat the packaging material ( ). In this case, after being heated and melted, the resin film of the packaging material ( ) is gradually cooled. As a result, thermoplastic resin that constitutes the resin film is crystallized and becomes brittle. Accordingly, when an external force is applied by use of the opening means to thereby open the spout ( ), the resin film does not stretch. As a result, the packaging material ( ) can be easily ruptured, and the rupture surface of the packaging material ( ) is prevented from being roughened, because the resin film does not have ruptured and stretched portions coexisting in a mixed manner.

Wrapping material processor and process for manufacturing packing container

Film joining apparatus

Growing community of inventors

Tokyo, Japan

Yukihisa Kumeta