KYORAKU CO., LTD.

A water purification system capable of improving the water quality of a water area where blue-green algae are proliferating is provided. A water purification system includes a floating island floated on a water area; and a blue-green algae crusher connected to the floating island, the blue-green algae crusher is configured to be capable of applying an external force to blue-green algae in water to be treated within the water area and crushing the blue-green algae.

Provided is a double container in which an inner bag can be easily removed from an outer shell. A double container according to the present invention comprises a container body having an outer shell and an inner bag, wherein: a mouth part of the container body is configured by lamination of the outer shell and the inner bag; the inner bag comprises a flange part at an upper end thereof in the mouth part, the flange part covering the upper end of the outer shell from above; and the flange part comprises a pull-out part for pulling the inner bag out of the outer shell.

A structure usable as a luggage board or similar in a luggage compartment of a vehicle, including a resin-molded body and a torsion spring. The resin-molded body includes a front wall spaced apart from a rear wall and a peripheral wall connecting peripheries of the front and rear wall, as well as first and second plate-shaped portions which are rotatably coupled to each other with a hinge portion. The hinge portion is formed by concaving the rear wall toward the front wall, forming a hinge concave portion and welding the rear wall to the front wall. The torsion spring includes first and second arms and a coil therebetween. The first arm is slidably supported by the first plate-shaped portion. The second arm is supported by the second plate-shaped portion. The number of a fixation tool inserted into the first plate-shaped portion to support the first arm is one or less.

Provided is a manufacturing method for a foamed molded body that can improve the mass production efficiency of polyethylene-based foamed molded products with high expansion ratio. The method comprises a feeding step for feeding raw material resin into an internal space of a cylinder of an extruder through a hopper; wherein the raw material resin comprises 50 mass % or more of a polyethylene-based resin; the raw material resin comprises a pulverized material produced by pulverizing a foamed body using a pulverizer; the foamed body is composed of a resin comprising 50 mass % or more of a polyethylene-based resin and has an expansion ratio of 2.0 or more; the pulverizer is configured to discharge the pulverized material from the pulverizer through an opening provided in a screen mesh; and a diameter of the opening is 8.0 mm or less.

Provided is a hard container capable of appropriately discharging or spraying content. The present invention provides a resin-made hard container for use with a suction device attached thereto that is configured to discharge or spray suctioned content. The hard container is provided with a container body having an outer shell and an inner bag. The container body is configured such that the inner bag contracts as the content is reduced. An innermost layer of the outer shell comprises an EVOH layer.

Provided is a thermal melting three-dimensional printer capable of preventing molding defects. According to the present invention, there is provided a thermal melting three-dimensional printer comprising an extruder, and a push-in mechanism, wherein the extruder includes a hopper, a cylinder, and a nozzle, the hopper is configured to feed pellets into the cylinder through a raw material feed port provided in the cylinder, the extruder is configured to melt and knead, in the cylinder, the pellets fed into the cylinder to form a molten resin and to extrude the molten resin through the nozzle to form a strand, and the push-in mechanism is configured to push pellets loaded on a loading surface of the hopper into the cylinder through the raw material feed port.

The present invention provides a method for manufacturing a container, in which the occurrence of tears at a part corresponding to the sealing part of a preform is preventable during manufacture of the container by performing biaxial stretch blow molding on the preform formed by direct blow molding. The present invention provides a method for manufacturing a container, comprising a step of manufacturing a container main body by performing biaxial stretch blow molding on a preform, wherein the preform includes a direct blow molded body formed by performing direct blow molding on a molten tubular parison, and the direct blow molded body is provided with a protruding sealing part in which a sealing part, formed by welding inner surfaces of the tubular parison to each other, protrudes from a main body part of the direct blow molded body.

A resin residue removal device is provided that is capable of appropriately removing a resin residue adhered to a lower surface of a die of a molding apparatus. The present invention provides a resin residue removal device for removing a resin residue adhered to a lower surface of a die of a molding apparatus, the device including a moving mechanism and a resin residue removal head, wherein the moving mechanism is configured to move the resin residue removal head between a lateral position out of a position immediately below the die and an immediately below position as the position immediately below, and also in the immediately below position, to move the head between a separate position separate from the lower surface and a close position close to the lower surface, and the resin residue removal head is configured to allow removal of the resin residue adhered to the lower surface by moving along the lower surface.

A self-standing packaging bag for use in a microwave oven. The packaging bag is made of a flexible film formed into a bag shape, the packaging bag includes a bottom surface portion and a peripheral surface portion provided to rise from the bottom surface portion, the peripheral surface portion includes a front surface portion and a back surface portion facing each other and includes an opening that opens upward, the peripheral surface portion includes an openable member configured to open and close the opening, and an opening portion for opening the packaging bag, the opening portion is provided closer to the bottom surface portion than the openable member, a container-shaped main body portion obtained by tearing the peripheral surface portion in a circumferential direction at the opening portion and removing a tear-off portion above the opening portion is usable as a dish when eating contents in the packaging bag.

Provided is a double container where an inner bag can be easily pulled out from an outer shell. According to the present invention, a double container comprising a container body and a mouth part attachment member is provided. The container body includes a mouth part and a body part and a bottom part. The mouth part is a tubular portion having an open end. The body part is arranged adjacent to the mouth part on a side farther from the open end than the mouth part, and has a larger outer diameter than the mouth part. The bottom part is configured to close a lower end of the body part. The container body includes an inner bag and an outer shell arranged to cover the inner bag. And the mouth part attachment member is configured to be attachable to the mouth part, and is configured such that the inner bag rotates as the mouth part attachment member rotates.