Abstract: To provide a laser-marking film having a laser-marking ink layer capable of forming vivid images when it is irradiated with a laser beam for forming laser markings. A laser-marking film comprising a base film 1, a white underlying layer 3 formed on the base film 1, and an ink layer 5 for laser marking formed on the underlying layer 3, wherein the ink layer 5 contains, dispersed therein, an iron oxide as a laser beam-absorbing agent in an amount of 0.1 to 30 parts by weight per 100 parts by weight of a resin binder.

Abstract: An oxygen absorber for blending in a resin, comprising a mixed powder containing an iron powder, a metal halide and an alkaline substance, and having a half-peak width on a plane (110) of 0.20°/2? (Co—K?) or less as measured by a powder X-ray diffraction method, a specific surface area of 0.5 m2/g or more, and an average particle size of 1 to 40 ?m. The oxygen absorber effectively suppresses the generation of hydrogen, features excellent safety, exhibits excellent oxygen-absorbing capability and offers an advantage of high productivity due to the suppressed occurrence of coarse particles in the step of producing the oxygen absorber.

Abstract: [Problems] To provide a laser-marking film having a laser-marking ink layer capable of forming vivid images when it is irradiated with a laser beam for forming laser markings. [Means for Solution] A laser-marking film comprising a base film 1, a white underlying layer 3 formed on the base film 1, and an ink layer 5 for laser marking formed on the underlying layer 3, wherein the ink layer 5 contains, dispersed therein, an iron oxide as a laser beam-absorbing agent in an amount of 0.1 to 30 parts by weight per 100 parts by weight of a resin binder.

Abstract: An oxygen absorber for blending in a resin, comprising a mixed powder containing an iron powder, a metal halide and an alkaline substance, and having a half-peak width on a plane (110) of 0.20°/2? (Co—K?) or less as measured by a powder X-ray diffraction method, a specific surface area of 0.5 m2/g or more, and an average particle size of 1 to 40 ?m. The oxygen absorber effectively suppresses the generation of hydrogen, features excellent safety, exhibits excellent oxygen-absorbing capability and offers an advantage of high productivity due to the suppressed occurrence of coarse particles in the step of producing the oxygen absorber. The oxygen-absorbing container has a layer comprising an oxygen-absorbing resin composition containing the oxygen absorber for blending in a resin of the invention, excellently preserves the content, exhibits good appearance with less ruggedness on the surface, and is free from such a probability of swelling or rupturing of the container due to the generation of hydrogen.