Kobe Steel, Ltd.

Hiroyuki Ban

Koji Noishiki

Kazuto Okada

Seiichi Yamamoto

The present invention provides microsphere manufacturing method and apparatus capable of stable obtaining microspheres of a desired size and reducing facility cost. According to the method and the apparatus, to manufacture microspheres made of a second liquid in a first liquid, the first liquid is supplied into a first channel to flow therein and the second liquid is supplied to an intermediate part of the first channel through a second channel. The supply velocities of the first and second liquids are set such that the second liquid closes the first channel and the closing part of the second liquid is cut off due to a pressure difference between an upstream side and a downstream side to form microspheres.

Method and apparatus for manufacturing liquid microspheres

To improve reaction efficiency by increasing a contact area of first and second reactants per unit volume, without reducing dimensions of the inlet paths for the first and second reactants in a layer-thickness direction, a channel includes a first inlet path having the first reactant, a parallel second inlet path separated from the first inlet path and having the second reactant, a junction channel for causing the first and second reactants to join as separate laminar flows, and a parallel reaction channel connected with a downstream side of the junction channel for permitting the laminar flows of the first and second reactants to react at a contact interface thereof. A dimension of the reaction channel in the layer-thickness direction perpendicular to the contact interface is set to be smaller than the sum of the dimensions of the first inlet path and the second inlet path in the layer-thickness direction.

Reactor and reacting method

There is provided a groove machining method by means of water jet which machines grooves by means of a water jet device including injection nozzles for injecting a water jet on a face to be machined of a member to be machined, including a step of disposing protection members which are more resistive against an injection power of the water jet than the member to be machined so as to cover a portion which is a part of the face to be machined, and on which grooves are not to be formed in order to form ends of the machined grooves in a travel direction of the injection nozzles inside an outline of the face to be machined, and a step of moving the nozzles across the protection members and the face to be machined while injecting the water jet at a predetermined injection power from the injection nozzles.

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Takasago, Japan

Hiroyuki Ban