To obtain a plastic film for a safe medical liquid container wherein dielectric sealing can be effectively carried out; a rise of heat resistance and improvement or the like for compatibility between a resin of polypropylene or the like and a polyamide resin can be also carried out, whitening in processing the film is suppressed as low as possible; whitening due to steam sterilization at 121°C and a stripe pattern due to separative precipitation of a resin are suppressed; an external appearance is good; and a good sealing property is held without generating a problem of eluting materials.
The plastic film for a medical liquid container comprising at least three layers of a laminate containing a sealing layer, which is provided by stacking a first layer having an individual polymer of propylene, a second layer being near the sealing layer and the sealing layer having a copolymer of the propylene and another monomer as a main component and the second layer contains a polyamide resin and a copolymer of α-olefine and another monomer.
COPYRIGHT: (C)2003,JPO
Koichi Miura
Kazuhiro Ikeda
| JP2002011839A |
Yuko Nishikawa