Unitika Ltd.

Unitika Fibers Ltd.

Seiji Abe

Shoji Matsumoto

Masahiro Hosoda

Masaki Nishimura

Kenji Chizuka

Takenori Domon

Mitsuo Omori

Eiji Tsukamoto

Dai Iwasaki

Hideharu Yamamoto

Minoru Fujii

Shuhei Kurata

Koji Kakumoto

Takeshi Nishiyama

Kunio Akasaki

Disclosed is a monofilament allowing contrast X-ray radiography. At least part of the monofilament is formed of a thermoplastic resin containing a radiopaque agent. The monofilament contains the radiopaque agent in the thermoplastic resin in a content of 30 to 80% by mass, and has a Young's modulus of 0.1 to 5.0 cN/dtex and a fineness of 500 to 20000 dtex.

Radiopaque monofilament for contrast X-ray radiography

An antibacterial polyamide filament which comprises a polyamide resin containing 0.1 to 5.0 mass % of fine zinc oxide particles and exhibits a color difference caused by the treatment with an alkaline solution of 2.5 or less; and a method for producing the antibacterial polyamide filament which comprises adjusting the moisture content of a polyamide resin chip to 0.05 to 2.0 mass %, followed by melt spinning. Preferably, the antibacterial polyamide filament has a bacteriostatic activity after 50 washings of 2.2 or more, which filament can be produced by melt-spinning the polyamide resin to melt spinning and solidifying the resin at a position 400 mm or less from the face of a spinning nozzle.

Antibacterial polyamide fiber and method for producing the same

Growing community of inventors

Kyoto, Japan

Seiji Abe