A thermoplastic filament comprising multiple polymers of differing flow temperatures in a regular geometric arrangement, and a method for producing such a filament, are described. Because of the difference in flow temperatures, there exists a temperature range at which one polymer is mechanically stable while the other is flowable. This property is extremely useful for creating thermoplastic monofilament feedstock for three-dimensionally printed parts, wherein the mechanically stable polymer enables geometric stability while the flowable polymer can fill gaps and provide strong bonding and homogenization between deposited material lines and layers. These multimaterial filaments can be produced via thermal drawing from a thermoplastic preform, which itself can be three-dimensionally printed. Furthermore, the preform can be printed with precisely controlled and complex geometries, enabling the creation of monofilament and fiber with unique decorative or functional properties.

A thermoplastic filament comprising multiple polymers of differing flow temperatures in a geometric arrangement and an interior channel containing a structural or functional thread therein is described. A method for producing such a filament is also described. Because of the difference in flow temperatures, there exists a temperature range at which one polymer is mechanically stable while the other is flowable. This property is extremely useful for creating thermoplastic monofilament feedstock for three-dimensionally printed parts, wherein the mechanically stable polymer enables geometric stability while the flowable polymer can fill gaps and provide strong bonding and homogenization between deposited material lines and layers. These multimaterial filaments can be produced via thermal drawing from a thermoplastic preform, which itself can be three-dimensionally printed. Furthermore, the preform can be printed with precisely controlled and complex geometries, enabling the creation of a filament or fiber with an interior thread contained within the outer, printed filament or fiber. This thread adds structural reinforcement or functional properties, such as electrical conductivity or optical waveguiding, to the filament.

A joint member of a composite including reinforcement fibers and resin and to be joined to a joining part according to an aspect includes: a main body part; and a joint part connecting with the main body part and to be joined to the joining part. The joint part includes a bulging part bulging toward the joining part in an opposed direction in which the joint part is opposed to the joining part, and has an orientation pattern having anisotropy such that fiber directions of the reinforcement fibers included in the joint part include a fiber direction different from a load direction of a load applied to a joined portion of the joint part and the joining part.

A method for connecting the joint of two ends of at least one chassis sealing element. In order to allow a secure and quick connection of the ends and allow an additional unhindered passage of air and moisture between hollow chambers within the chassis sealing element via the joint when using a profiled hollow chamber, the ends are first arranged at a distance to each other, and a shapeless bonding agent is applied to at least one end. The bonding agent is then heated, and the ends are brought into mutual contact, whereby the ends are bonded at the joint by way of the heated bonding agent.

Methods of manufacturing a panel for a vehicle that includes forming a stringer from separate charges. The method can include positioning a forming sheet between the charges that are aligned in an overlapping arrangement. The charges can be held together and the forming sheet can be used to separate the ends of the charges to form flanges that extend outward from a blade. While still secured together, the formed stringer can be moved to a panel and positioned with the flanges contacting against the panel. Filler material can be positioned in an opening formed between the ends of the flanges.

A method may produce an axially movable connection between two components with a plastic as a sliding material arranged therebetween. The method may involve providing the two components and either at least one of the two components has a plastic coating or a plastic sleeve is provided between the components, joining the two components to form a unit via a pressing force in an axial direction, clamping the unit in a device in which the two components are clampable and subjectable to a displacement force in the axial direction, pressing a sonotrode against an outer of the two components and bracing the outer component against a counter-holder, injecting an ultrasound signal into the sonotrode and moving the two components back and forth in the axial direction until a displacement force or a displacement velocity reaches a target, and ending the ultrasound signal and removing the unit from the device.

A composite material component manufacturing method including a first thermoforming step for creating a first three-dimensional prepreg sheet by thermoforming a thermoplastic first prepreg sheet into a three dimensional shape, a laminate body creating step for creating a prepreg sheet laminate body by layering the first three-dimensional prepreg sheet and a second prepreg sheet; and a laminate body molding step for molding the prepreg sheet laminate body by applying heat and a pressing force to the prepreg sheet laminate body with a pressing device.

A fiber composite component having a first and a second fiber composite element each bent along a transverse axis opf the fiber composite component to have, respectively, in succession, a first and second base flange, a first and second web section, a first and second top flange and a first and second stiffening web. Respectively, the first and second base flanges are parallel to the first and second top flanges, the first and second web sections are angled with respect to each of the first and second base flanges and the first and second top flanges, the first and second stiffening webs are at right angles with respect to the first and second top flanges, and the first stiffening web and the second stiffening web are congruent with respect to one another, and are connected to one another, along a longitudinal axis of the fiber composite component.

A method for manufacturing a facial-interface cushion for a head-mounted display may include (1) positioning a foam layer between a recessed mold member and an insertion mold member of a mold assembly, with a first end portion of the foam layer overlapping a second end portion of the foam layer, (2) forcing the insertion mold member against the foam layer in a direction toward the recessed mold member, thereby forming a shaped foam element including a first end portion that is compressed against a second end portion between the insertion mold member and the recessed mold member, and (3) heating the shaped foam element to form a facial-interface cushion by softening the shaped foam element and bonding the first end portion of the shaped foam element to the second end portion of the shaped foam element. Various other facial-interface cushions, systems, and methods for head-mounted displays are also disclosed.

A resin frame includes frame members combined into a frame shape that includes a corner portion, and a joint portion joining a pair of the frame members which are adjacent to each other at the corner portion. The joint portion includes an entire-surface welded portion, in which end surfaces of the pair of the frame members are welded to each other over an entire surface in a thickness direction of a plate portion of the frame members, and a partial welded portion, in which the end surfaces of the pair of the frame members are welded to each other on one side of the entire surface in the thickness direction while another side of the entire surface in the thickness direction is not welded. The entire-surface welded portion and the partial welded portion are present at different portions on an outer periphery of the joint portion.