A cutting apparatus is provided. The cutting apparatus includes a cutter disposed in a conveying path for conveying a plate-shaped object and configured to cut the object, a downstream conveyor disposed downstream of the cutter in the conveying path and configured to convey the object, and a foreign-matter adhesion preventer disposed between the cutter and the downstream conveyor and configured to prevent foreign matter scattered by the cutter from adhering to the downstream conveyor.

A cement-based tile formed from a mixture comprising: a cement in the range of about 0.1 to 88% by wet weight percent; a secondary material in the range of about 0.1 to 50% by wet weight percent, the secondary material comprising limestone, sand, silica sand, gypsum, silica fume, fumed silica, Plaster of Paris, calcium carbonate, fly ash, slag, rock, or a combination thereof; a reinforcement fiber in the range of about 0.5 to 20% by wet weight percent, the reinforcement fiber comprising cellulose fiber, glass fiber, plastic fiber, polypropylene fiber, polyvinyl alcohol (PVA) fiber, homopolymer acrylic fiber, alkali-resistant fiber, or a combination thereof; a rheology modifying agent in the range of about 0.5 to 10% by wet weight percent; a water in the range of 10 to 60% of a total wet material weight; and wherein the mixture is extruded or molded to form the cement-based tile.

The present disclosure provides a metamaterial manufacturing method. The manufacturing method includes the following steps: (a) separately adding insulating substrate powder and at least one of wave-absorbing agent powder and metal electrode powder to thermoplastic resin, and mixing them evenly to obtain a raw material; (b) applying a coextrusion process to the raw material according to a metamaterial microstructure design, to form a microstructure unit rodlike material; and (c) configuring the microstructure unit rodlike material in a cyclic microstructure configuration manner, placing the material in an extruder, and obtaining a cyclically configured metamaterial microstructure through coextrusion by using the extruder. The present disclosure further provides a metamaterial manufactured by using the foregoing method. The present disclosure provides a method for manufacturing a ceramic-substrate metamaterial that features high efficiency, low iteration costs, and a relatively high yield rate. A thinner and more efficient wave-absorbing metamaterial is obtained.

The present disclosure provides a metamaterial manufacturing method. The manufacturing method includes the following steps: (a) separately adding insulating substrate powder and at least one of wave-absorbing agent powder and metal electrode powder to thermoplastic resin, and mixing them evenly to obtain a raw material; (b) applying a coextrusion process to the raw material according to a metamaterial microstructure design, to form a microstructure unit rodlike material; and (c) configuring the microstructure unit rodlike material in a cyclic microstructure configuration manner, placing the material in an extruder, and obtaining a cyclically configured metamaterial microstructure through coextrusion by using the extruder. The present disclosure further provides a metamaterial manufactured by using the foregoing method. The present disclosure provides a method for manufacturing a ceramic-substrate metamaterial that features high efficiency, low iteration costs, and a relatively high yield rate. A thinner and more efficient wave-absorbing metamaterial is obtained.

A ceramic formed body extrusion method for forming a ceramic formed body having a wall-shaped or plate-shaped formed portion by using an extrusion die provided with a slit for extrusion of a ceramic formed body from a raw material for forming, the slit including a slit former stage unit located on an upstream side in an extrusion direction in the extrusion and a slit latter stage unit located on a downstream side in the extrusion direction, the slit latter stage unit having a width of three to 27 times a width of the slit former stage unit, and by extruding a raw material containing a first particle having an aspect ratio of two or more and less than 300 such that the raw material passes though the slit former stage unit of the extrusion die and then passes through the slit latter stage unit.

A ceramic formed body extrusion method for forming a ceramic formed body having a wall-shaped or plate-shaped formed portion by using an extrusion die provided with a slit for extrusion of a ceramic formed body from a raw material for forming, the slit including a slit former stage unit located on an upstream side in an extrusion direction in the extrusion and a slit latter stage unit located on a downstream side in the extrusion direction, the slit latter stage unit having a width of three to 27 times a width of the slit former stage unit, and by extruding a raw material containing a first particle having an aspect ratio of two or more and less than 300 such that the raw material passes though the slit former stage unit of the extrusion die and then passes through the slit latter stage unit.

A cutting device of cutting a soft honeycomb mold body in a cutting direction perpendicular to an axial direction of the honeycomb mold body. A cutting device has a wire, a tension supply part and a pair of ultrasonic generators. The wire has a contact part which is stretched and in contact with the honeycomb mold body when the honeycomb mold body is cut. The tension supply part supplies tensile to the contact part when the honeycomb mold body is cut. The pair of ultrasonic generators have respective vibrator terminals arranged in contact with the contact part of the wire. The ultrasonic generators generate ultrasonic vibration in the cutting direction and supply the generated ultrasonic vibration directly to the wire.

A roof tile containing fibers which satisfy the following requirements (1) to (3): (1) to have an average fiber diameter of 50 m or less; (2) to have an aspect ratio of 50 to 2000; and (3) to have three or less buckled portions per fiber.

A roof tile containing fibers which satisfy the following requirements (1) to (3): (1) to have an average fiber diameter of 50 m or less; (2) to have an aspect ratio of 50 to 2000; and (3) to have three or less buckled portions per fiber.

An apparatus and method of manufacturing a porous ceramic segmented honeycomb body (340,340) comprising axial channels (216) extending from a first end face (220) to a second end face (224). A plurality of porous ceramic honeycomb segments (204) is moved axially past respective apertures (110) of an adhesive applying device (100). Adhesive (118) is applied through openings (126) in the adhesive applying device (100) onto peripheral axial surfaces of each porous ceramic honeycomb segment (204). The plurality of porous ceramic honeycomb segments (204) enters a wide opening (318) of a tapered chamber (314) and exits a narrow opening (322) of the tapered chamber (314); a tapered wall (326) from the wide opening (318) to the narrow opening (322) presses the plurality of porous ceramic honeycomb segments (204) together forming the porous ceramic segmented honeycomb body (340,340). The adhesive (118) on the peripheral axial surfaces between respective porous ceramic honeycomb segments (204) is distributed by the pressing.