The disclosure herein relates to ethylene propylene diene monomer (EPDM) rubber. More specifically, the present disclosure relates to fire-resistant EPDM rubber. In one embodiment, the fire-resistant EPDM is a membrane used for weatherproofing buildings. In another embodiment, the fire-resistant EPDM membrane is a roofing material. In other embodiments, the fire-resistant EPDM rubber can be used in the electrical field.

The disclosure herein relates to ethylene propylene diene monomer (EPDM) rubber. More specifically, the present disclosure relates to fire-resistant EPDM rubber. In one embodiment, the fire-resistant EPDM is a membrane used for weatherproofing buildings. In another embodiment, the fire-resistant EPDM membrane is a roofing material. In other embodiments, the fire-resistant EPDM rubber can be used in the electrical field.

The invention relates to compositions comprising composite materials comprised of discontinuous fibers and one or more polymers and/or oligomers. The invention relates to methods of making the same. The composite materials can be in the form of compositions, composite sheets, laminates, pellets, and/or shaped composite products.

The invention relates to compositions comprising composite materials comprised of discontinuous fibers and one or more polymers and/or oligomers. The invention relates to methods of making the same. The composite materials can be in the form of compositions, composite sheets, laminates, pellets, and/or shaped composite products.

Provided is a molding apparatus used for manufacturing a molded surface fastener wherein a die wheel driving rotationally has a concentric double cylinder structure provided with an outer side cylindrical body that has provided therethrough a plurality of penetrating holes, and an inner side cylindrical body that has formed, in the outer peripheral surface thereof, a plurality of grooved portions, the grooved portions located in the inner side cylindrical body include a use grooved portion that intersects with the penetrating hole of the outer side cylindrical body and a non-use grooved portion that is covered by the inner peripheral surface of the outer side cylindrical body. By using this molding apparatus obtained is a molded surface fastener in which a plurality of types of engaging elements having different shapes in a plan view are arranged cyclically in a reference direction.

A screw extruder which extrudes a kneaded material includes a screw having a helical flight provided on an outer peripheral surface of a shaft portion thereof, and a chamber housing the screw. In the screw extruder, a flight thickening portion is provided at a part which is a tip portion of the flight and is on the reverse side of a rotation direction of the flight.

An additive manufacturing system is disclosed. The additive manufacturing system may include a moveable support, and a print head connected to the moveable support. The print head may be configured to discharge a continuous reinforcement that is wetted with a liquid matrix. The additive manufacturing system may also include an auto-threader configured to thread the continuous reinforcement through the print head, and a controller in communication with the moveable support, the print head, and the auto-threader. The controller may be configured to selectively activate the auto-threader at a start of a manufacturing process.

An additive manufacturing system is disclosed. The additive manufacturing system may include a moveable support, and a print head connected to the moveable support. The print head may be configured to discharge a continuous reinforcement that is wetted with a liquid matrix. The additive manufacturing system may also include an auto-threader configured to thread the continuous reinforcement through the print head, and a controller in communication with the moveable support, the print head, and the auto-threader. The controller may be configured to selectively activate the auto-threader at a start of a manufacturing process.

A method of manufacturing a polymer film includes melting a resin, extruding the melted resin through a die to produce a polymer film, shaping the polymer film, cooling the polymer film, capturing an image of a test pattern through the polymer film, calculating a modulation transfer function value from the image, and adjusting a process parameter of the melting, the extruding, the shaping, or the cooling based on the calculated modulation transfer function value.

A method of manufacturing a polymer film includes melting a resin, extruding the melted resin through a die to produce a polymer film, shaping the polymer film, cooling the polymer film, capturing an image of a test pattern through the polymer film, calculating a modulation transfer function value from the image, and adjusting a process parameter of the melting, the extruding, the shaping, or the cooling based on the calculated modulation transfer function value.