Abstract: Provided are a deforming method and device that use laser-induced breakdown. The provided method and device make it possible to shorten the focal distance, thereby improving laser beam convergence, and increase the utilization efficiency of sound waves that contribute to defoaming. Pulsed laser light is focused and irradiated into a space inside an acoustic waveguide (4), thereby generating pulsed sound waves from the illumination point (7). The pulsed sound waves propagate down the acoustic waveguide as plane waves, then propagate beyond an open end (16) as spherical waves, and break up a foam outside the open end of the acoustic wave guide.

Abstract: In a method for decorating a plastic package, on at least a part of a surface of the plastic package, portions which are different in optical characteristics from the surface are periodically arranged to decorate the surface.

Abstract: In a method for decorating a plastic package, on at least a part of a surface of the plastic package, portions which are different in optical characteristics from the surface are periodically arranged to decorate the surface.

Abstract: There is here disclosed a plastic package (1) which has a thin-film layered structure (2) constituted of substances having different refractive indices and which is colored by an interference effect due to the thin-film layered structure (2). The plastic package is characterized in that, on a part of the surface of the plastic package, portions which are different in optical characteristics from the surface are periodically arranged.

Abstract: A method for forming a structural body includes irradiating a substrate with light having a periodic intensity distribution and a wavelength within a wavelength region which allows the substrate to show opacity thereby forming a periodic structure causing optical diffraction on a surface of the substrate.

Abstract: A structural body has an inner layer formed of a resin which does not transmit light with a specific wavelength, an outer layer stacked on the inner layer and formed of a resin which transmits the light with the specific wavelength, and a fine periodic structure provided on at least part of a surface of the inner layer facing the outer layer and having a plurality of photodecomposition generated convex and concave portions. The plurality of convex and concave portions of the fine periodic structure is formed alternatively, and horizontally and vertically with substantially equal intervals in between along the surface of the inner layer facing the outer layer.

Abstract: A defoaming method capable of destroying foams generated when a container is filled with drink, or the like, efficiently at a high speed and destroying foams effectively even in the case of a container having a narrow mouth. Liquid surface (6) in a container (1) is irradiated with pulse-like light (2) and a pulse-like sound wave (8) is generated from an irradiated point (7) as a sound source. The pulse-like sound wave thus generated propagates from the sound source as a strong spherical wave to reach a bubble (9) and to destroy the bubble. It can also destroy a bubble located at a place remote from the optical path quickly, thus destroying bubbles efficiently at a high speed. Alternatively, pulse-like light is condensed at a gas portion above the liquid surface and the bubbles can be destroyed with a shock wave generated by breakdown phenomenon.

Abstract: Provided are a deforming method and device that use laser-induced breakdown. The provided method and device make it possible to shorten the focal distance, thereby improving laser beam convergence, and increase the utilization efficiency of sound waves that contribute to defoaming. Pulsed laser light is focused and irradiated into a space inside an acoustic waveguide (4), thereby generating pulsed sound waves from the illumination point (7). The pulsed sound waves propagate down the acoustic waveguide as plane waves, then propagate beyond an open end (16) as spherical waves, and break up a foam outside the open end of the acoustic wave guide.

Abstract: Decoration of a material is enabled with a high degree of recycling properties while satisfying the requirements for putting a structural color into practical use on the industrial scale. Furthermore, whether an object is genuine or not can be verified easily, and reusing by peeling as in the case of a hologram seal is prevented. A structural body 10 has a configuration in which a periodic structure 15 causing optical diffraction is formed on part or the whole of the surface of the substrate 11.

Abstract: Decoration of a material is enabled with a high degree of recycling properties while satisfying the requirements for putting a structural color into practical use on the industrial scale. Furthermore, whether an object is genuine or not can be verified easily, and reusing by peeling as in the case of a hologram seal is prevented. A cavity 12 having a periodic structure 13 causing optical diffraction is formed in the inside of a substrate 11, and a periodic structure 15 causing optical diffraction is formed on part or the whole of the substrate 11. These cavity interface periodic structure 13 and the substrate surface periodic structure 15 have a regular arrangement developing a structural color. In addition, by bringing a functional material to be in contact with the substrate surface periodic structure 15, development of a structural color by the substrate surface periodic structure 15 is suppressed, thereby enabling a structural color developed by the cavity interface periodic structure 13 to be read.

Abstract: A defoaming method capable of destroying foams generated when a container is filled with drink, or the like, efficiently at a high speed and destroying foams effectively even in the case of a container having a narrow mouth. Liquid surface (6) in a container (1) is irradiated with pulse-like light (2) and a pulse-like sound wave (8) is generated from an irradiated point (7) as a sound source. The pulse-like sound wave thus generated propagates from the sound source as a strong spherical wave to reach a bubble (9) and to destroy the bubble. It can also destroy a bubble located at a place remote from the optical path quickly, thus destroying bubbles efficiently at a high speed. Alternatively, pulse-like light is condensed at a gas portion above the liquid surface and the bubbles can be destroyed with a shock wave generated by breakdown phenomenon.

Abstract: A defoaming method capable of destroying foams generated when a container is filled with drink, or the like, efficiently at a high speed and destroying foams effectively even in the case of a container having a narrow mouth. Liquid surface (6) in a container (1) is irradiated with pulse-like light (2) and a pulse-like sound wave (8) is generated from an irradiated point (7) as a sound source. The pulse-like sound wave thus generated propagates from the sound source as a strong spherical wave to reach a bubble (9) and to destroy the bubble. It can also destroy a bubble located at a place remote from the optical path quickly, thus destroying bubbles efficiently at a high speed. Alternatively, pulse-like light is condensed at a gas portion above the liquid surface and the bubbles can be destroyed with a shock wave generated by breakdown phenomenon.

Abstract: A laminated structural body such as a cap or a metal can having excellent decorative effect and capable of expressing a variety of structured colors like a hologram by forming, in the surface of the structural body, a regularly arranged fine periodic structure that expresses structured colors by the irradiation with a laser beam that has a periodic intensity profile.

Abstract: Laser marking is surely conducted on the second and subsequent layers of a structural body with a multilayer structure, whereby a marked part can be prevented from being marred, fouled, falsified or erased, as well as marking can be conducted in a variety of colors. A structural body 10 including an inner layer 12 and an outer layer 11 stacked, wherein said inner layer 12 is formed of a resin which does not transmit light with a specific wavelength and said outer layer 11 is formed of a resin which transmits light with the specific wavelength, and a fine periodic structure 14 in the form of convexes and concaves formed by generation of photodecomposition is provided on at least part of the surfaces 13 of the inner layer 12 which is opposite to the outer layer 11.

Abstract: Decoration of a material is enabled with a high degree of recycling properties while satisfying the requirements for putting a structural color into practical use on the industrial scale. Furthermore, whether an object is genuine or not can be verified easily, and reusing by peeling as in the case of a hologram seal is prevented. A cavity 12 having a periodic structure 13 causing optical diffraction is formed in the inside of a substrate 11, and a periodic structure 15 causing optical diffraction is formed on part or the whole of the substrate 11. These cavity interface periodic structure 13 and the substrate surface periodic structure 15 have a regular arrangement developing a structural color. In addition, by bringing a functional material to be in contact with the substrate surface periodic structure 15, development of a structural color by the substrate surface periodic structure 15 is suppressed, thereby enabling a structural color developed by the cavity interface periodic structure 13 to be read.

Abstract: A defoaming method capable of destroying foams generated when a container is filled with drink, or the like, efficiently at a high speed and destroying foams effectively even in the case of a container having a narrow mouth. Liquid surface (6) in a container (1) is irradiated with pulse-like light (2) and a pulse-like sound wave (8) is generated from an irradiated point (7) as a sound source. The pulse-like sound wave thus generated propagates from the sound source as a strong spherical wave to reach a bubble (9) and to destroy the bubble. It can also destroy a bubble located at a place remote from the optical path quickly, thus destroying bubbles efficiently at a high speed. Alternatively, pulse-like light is condensed at a gas portion above the liquid surface and the bubbles can be destroyed with a shock wave generated by breakdown phenomenon.

Abstract: There is here disclosed a plastic package (1) which has a thin-film layered structure (2) constituted of substances having different refractive indices and which is colored by an interference effect due to the thin-film layered structure (2). The plastic package is characterized in that, on a part of the surface of the plastic package, portions which are different in optical characteristics from the surface are periodically arranged.

Abstract: A resion composition in which a coloring component comprising a polymer and having a regular configuration as a coloring principle is contained in a matrix resin, and a temperature at which the coloring component is decolored is higher than a temperature at which the matrix resin is processed. A packaging structure in which, on at least a portion of the surface of the packaging structure, portions which are different in optical characteristics from the surface are periodically arranged by use of a fibrous structure.

Abstract: A method and apparatus for manufacturing pressurized packages capable of obtaining gas displacement pressurized canned goods with high accuracy of internal pressure by atomizing liquid nitrogen, and supplying it together with low temperature vaporized gases to a head space of a can. A spray device assembly (10) for atomizing and spraying the liquid nitrogen is provided in an opening of the bottom of a liquefied gas storage tank (1) formed as a vacuum heat insulating structure. The spray device assembly (10) is constituted such that a valve (2) for controlling the flow rate of liquid nitrogen, a spray nozzle (3), a liquid nitrogen flowpassage (4) extending from the valve (2) to the spray nozzle (3), a nozzle cooling tank (5) for cooling the flowpassage, and a purge device for cutting an outer peripheral portion of a nozzle and an outlet portion off from the air, so as to prevent them from being frosted, are integrally mounted on a spray body 6.

Abstract: An object, such as a container cover, is lined on a predefined area of the object by depositing powder on the predefined area. The lining material is formed into a non-spherical powder having a resting angle of 40 degrees or greater. The powder is deposited by fluidizing the powder in a feeder using vibration and conveying the powder through a nozzle to the predefined area. The powder layer deposited on the object is pressed with a molding element to form a lining layer having the predefined shape. The lining thus formed has a predefined thickness distribution and shape with good tightening and sealing properties and corrosion resistance. In addition, no environmentally unsafe processes are required for the precise deposition of powder.