Toyo Boseki Kabushiki Kaisha

Sony Corporation

Yasuo Yoshinaka

Katsuaki Kuze

Norimi Tabota

Katsuhiko Nose

Tsutomu Isaka

Osamu Makimura

Yoshinobu Ninomiya

Nobukazu Kotera

Yoshinori Takegawa

Yujiro Matsuyama

Akito Hamano

Kiyokazu Oiyama

Toshihiro Yamashita

Tsuyoshi Matsunaga

Hideyuki Ohashi

Shinpei Yamamoto

Koichiro Nakamura

A polyester laminated film with excellent sealing ability is provided. The polyester laminated film comprises a base film of a polyester resin and a sealing film of a polyester composition, said sealing film being disposed on at least one side of said base film, wherein the sealing energy, which is measured when two pieces of said laminated films are joined together with the respective sealing films facing each other, is 300 g.cm/15 mm or more.

Polyester laminated film

A thermo-shrinkable polyester film of this invention is obtained from a composition that comprises acid components including terephthalic acid and glycol components including ethyleneglycol. The polyester film has a heat-shrinkage ratio of 30% or more in a certain direction at 100.degree. C., and a shrinkage ratio of 5% or more at the point of intersection of a curve showing the internal shrinkage stress of the film and a curve showing the tensile stress of the film.

Thermo-shrinkable polyester film

A radiation curable resin which is a polyurethane acrylate having (meth)acryloyloxy groups at the terminal end of the molecule and in the molecular chain thereof, and containing metal sulfonate groups in the molecule in a ratio of 3.0 to 1,500 equivalent/10.sup.6 g of the resin, said polyurethane acrylate being obtained by reaction of

Radiation curable resin

Growing community of inventors

Shiga, Japan

Yasuo Yoshinaka