Abstract:
A fiber aggregate is opened into individual fibers, the separated fibers are introduced into a duct having a width smaller than the length of individual fibers, and the fibers are forcefully parallelized in one fixed direction within the duct to produce a fiber assembly of the form such as of web or sliver which has the component fibers arranged parallelly in one same direction.
Abstract:
A twisted yarn is spun by pressing a strand of fibers against a rapidly rotating roller to separate the fibers, pressing the separated fibers against the wall of a main rotary drum, allowing the fibers pressed against the drum wall to be moved in the direction of a fiber condensing portion of the drum, and causing the fibers at this drum portion to be twisted and intertwined with the end of a preceding yarn portion spun in this manner.
Abstract:
Such a textile fabric comprises a large number of oblique threads 1 extending in radial directions from the centre of the textile fabric, and a circumferential thread 2 wound helically in a circumferential direction between the oblique threads, the effect of this being that adjacent oblique threads are interlaced with one another and that the circumferential thread is interlaced between the oblique threads thus interlaced, in such a way that such an interlacing can appear between adjacent turns of the circumferential thread, thus giving the textile fabric its triaxial nature. The invention is used particularly for textile fabrics intended for reinforcing structures having the form of bodies of revolution.
Abstract:
A spherical cloth weaving machine in which radially stretched warp yarn and circumferentially running weft yarns are woven into a desired spherical shape, the machine being constructed with a mechanism for moving the warp yarns alternately by shuttle chucks which hold required numbers of the warp yarns at their outer peripheral part. A mechanism is provided for hooking the circumferential weft yarn and beating the same toward the center of the warp yarns for compact weaving. A weft yarn rotating mechanism causes the weft yarn to pass through the warp yarns which are being moved by the warp yarn moving mechanism. A mechanism is provided for maintaining the woven cloth in a spherical shape.
Abstract:
A method for forming a uniformly mixed fibrous mat which comprises feeding a continuous high tensile modulus reinforcing fibrous material and a pre-cut thermoplastic fibrous material with a lower melting point or softening point than the temperature at which the reinforcing fibrous material melts or is damaged to a rotating rotor which is provided with projections to thereby cut the continuous fibrous material and pluck the pre-cut fibrous material, dispersing the thus treated fibrous materials into an air flow to mix the same and thereafter collecting the resulting mixed materials on a net to yield the mat. The product can thereafter optionally be compressed under heat to melt only the thermoplastic fibrous material to thereby consolidate the mat.
Abstract:
A triaxial textile fabric for use as a reinforcing textile fabric for a composite material wherein the modulus of elasticity is made isotropic and which can be readily deformed into a three-dimensional configuration without causing special changes in orientation angles and a process by which such a textile fabric can be easily produced. The fabric comprises a large number of oblique yarns extending in a radial direction from the center of the textile fabric, and a circumferential yarn woven spirally in a circumferential direction between the oblique yarns. Each adjacent ones of the oblique yarns are interlaced with each other and the circumferential yarn is woven between the thus interlaced oblique yarns such that such interlacing may appear between each adjacent coils of the spirally woven circumferential yarn. Such an interlacing step takes place after insertion of the circumferential yarn and before an upward and downward movement of the alternate oblique yarns.
Abstract:
A mixed fibrous mat for molding a fiber-reinforced composite material, which is composed of a reinforcing fibrous material and a thermoplastic fibrous matrix polymer having a lower melting point than the reinforcing fibrous material; and a method for producing a fiber reinforced composite material having a high modulus of elasticity which comprises compressing the mixed fibrous mat under heat to melt only the matrix polymer.