The present invention relates to a manufacturing method of a natural fiber composite material for injection molding using a reduced nozzle heating jig, and particularly, to a manufacturing method of a natural fiber composite material for injection molding using a reduced nozzle heating jig, which is configured to include: combining natural fibers and synthetic fibers (S1); heat-pressing the combined ply yarn while passing through a reduced nozzle heating jig 100 and melting and pressing the synthetic fibers and fusing the synthetic fibers to the natural fibers (S2); and palletizing the mixed ply yarn (S3).

The present invention relates to a manufacturing method of a natural fiber composite material for injection molding using a reduced nozzle heating jig, and particularly, to a manufacturing method of a natural fiber composite material for injection molding using a reduced nozzle heating jig, which is configured to include: combining natural fibers and synthetic fibers (S1); heat-pressing the combined ply yarn while passing through a reduced nozzle heating jig 100 and melting and pressing the synthetic fibers and fusing the synthetic fibers to the natural fibers (S2); and palletizing the mixed ply yarn (S3).

A nanofiber forest is described that has been processed to increase a number of nanofibers per unit area (referred to as areal density or, equivalently, density) compared to the nanofiber forest in its as-synthesized state. This increase in areal density is accomplished by physically manipulating a deformable substrate on which the nanofiber forest is disposed. At a high level, this physical manipulation begins by transferring the nanofiber forest from a growth substrate to a deformable substrate. A surface area of the deformable substrate is reduced relative to a surface area of the substrate when the nanofiber forest was attached. This reduction in area causes the nanofibers in the forest to move closer to one another, thus increasing the number of nanofibers per unit area.

A nanofiber forest is described that has been processed to increase a number of nanofibers per unit area (referred to as areal density or, equivalently, density) compared to the nanofiber forest in its as-synthesized state. This increase in areal density is accomplished by physically manipulating a deformable substrate on which the nanofiber forest is disposed. At a high level, this physical manipulation begins by transferring the nanofiber forest from a growth substrate to a deformable substrate. A surface area of the deformable substrate is reduced relative to a surface area of the substrate when the nanofiber forest was attached. This reduction in area causes the nanofibers in the forest to move closer to one another, thus increasing the number of nanofibers per unit area.

A fiber assembly including cellulose water-repellent fibers of the present invention is at least one selected from cotton, a fiber bundle, a yarn, and a gray fabric. A water-repellent agent is in a cross-linked state and fixed to the surface of cellulose fibers. A method for producing a fiber assembly including cellulose water-repellent fibers of the present invention includes applying a water-repellent agent to at least one fiber assembly selected from cotton, a fiber bundle, a yarn, and a gray fabric, and cross-linking the water-repellent agent to the surface of cellulose fibers by drying and then heat curing. Thus, the present invention provides a fiber assembly including cellulose water-repellent fibers that has durable water repellency, can be used for resist dyeing, and does not cause color transfer, a method for producing the fiber assembly, and a fiber product using the fiber assembly.

A fiber assembly including cellulose water-repellent fibers of the present invention is at least one selected from cotton, a fiber bundle, a yarn, and a gray fabric. A water-repellent agent is in a cross-linked state and fixed to the surface of cellulose fibers. A method for producing a fiber assembly including cellulose water-repellent fibers of the present invention includes applying a water-repellent agent to at least one fiber assembly selected from cotton, a fiber bundle, a yarn, and a gray fabric, and cross-linking the water-repellent agent to the surface of cellulose fibers by drying and then heat curing. Thus, the present invention provides a fiber assembly including cellulose water-repellent fibers that has durable water repellency, can be used for resist dyeing, and does not cause color transfer, a method for producing the fiber assembly, and a fiber product using the fiber assembly.

A method of making a surgical suture having a reformed tip includes providing an elongated fiber having a first end, a second end, a central axis extending between the first and second ends thereof, and an outer surface that defines a cross-sectional dimension of the elongated fiber, and compressing a center region of the elongated fiber that is located between the first and second ends thereof for reshaping the center region into a core mass and a deformed mass that extends laterally outside the cross-sectional dimension of said elongated fiber. The method includes separating the deformed mass of the center region from the core mass of the center region so that only the core mass remains for interconnecting the first and second ends of the elongated fiber, and after separating the deformed mass from the core mass, reshaping the core mass into a reformed mass having a reformed mass central axis that is offset from the central axis of the elongated fiber.

A fiber bundle joining apparatus includes: a support table configured to hold a terminal end portion side of a first fiber bundle; a roller mechanism having a roller around which a leading end portion side of a second fiber bundle is capable of being wound; a movement mechanism configured to perform a first movement for moving the roller mechanism to the vicinity of the terminal end portion side of the first fiber bundle, and a second movement for further moving the roller mechanism on the terminal end portion side of the first fiber bundle to create a state where the leading end portion side of the second fiber bundle is stacked on the terminal end portion side of the first fiber bundle; and a thermocompression bonding mechanism configured to pressure-bond the first fiber bundle and the second fiber bundle.

A fiber bundle joining apparatus includes: a support table configured to hold a terminal end portion side of a first fiber bundle; a roller mechanism having a roller around which a leading end portion side of a second fiber bundle is capable of being wound; a movement mechanism configured to perform a first movement for moving the roller mechanism to the vicinity of the terminal end portion side of the first fiber bundle, and a second movement for further moving the roller mechanism on the terminal end portion side of the first fiber bundle to create a state where the leading end portion side of the second fiber bundle is stacked on the terminal end portion side of the first fiber bundle; and a thermocompression bonding mechanism configured to pressure-bond the first fiber bundle and the second fiber bundle.

A nanofiber forest is described that has been processed to increase a number of nanofibers per unit area (referred to as areal density or, equivalently, density) compared to the nanofiber forest in its as-synthesized state. This increase in areal density is accomplished by physically manipulating a deformable substrate on which the nanofiber forest is disposed. At a high level, this physical manipulation begins by transferring the nanofiber forest from a growth substrate to a deformable substrate. A surface area of the deformable substrate is reduced relative to a surface area of the substrate when the nanofiber forest was attached. This reduction in area causes the nanofibers in the forest to move closer to one another, thus increasing the number of nanofibers per unit area.