In some embodiments, the inventive subject matter relates to a fiber construct suitable for use as a fill material for insulation or padding, comprising: a primary fiber structure comprising a predetermined length of fiber; a secondary fiber structure, the secondary fiber structure comprising a plurality of relatively short loops spaced along a length of the primary fiber. In some embodiments, the inventive subject matter relates to insulative fiber structures that mimic the structure and scale of natural down and thereby provide similar properties.

In some embodiments, the inventive subject matter relates to a fiber construct suitable for use as a fill material for insulation or padding, comprising: a primary fiber structure comprising a predetermined length of fiber; a secondary fiber structure, the secondary fiber structure comprising a plurality of relatively short loops spaced along a length of the primary fiber. In some embodiments, the inventive subject matter relates to insulative fiber structures that mimic the structure and scale of natural down and thereby provide similar properties.

In some embodiments, the inventive subject matter relates to a fiber construct suitable for use as a fill material for insulation or padding, comprising: a primary fiber structure comprising a predetermined length of fiber; a secondary fiber structure, the secondary fiber structure comprising a plurality of relatively short loops spaced along a length of the primary fiber. In some embodiments, the inventive subject matter relates to insulative fiber structures that mimic the structure and scale of natural down and thereby provide similar properties.

In some embodiments, the inventive subject matter relates to a fiber construct suitable for use as a fill material for insulation or padding, comprising: a primary fiber structure comprising a predetermined length of fiber; a secondary fiber structure, the secondary fiber structure comprising a plurality of relatively short loops spaced along a length of the primary fiber. In some embodiments, the inventive subject matter relates to insulative fiber structures that mimic the structure and scale of natural down and thereby provide similar properties.

The present application discloses a method to produce fibers with different segments along the major axis. The different segments can be constituted of the same materials that entrap different objects (molecules, particles) or can be made of different materials. The different segments are made thanks to a junction and by alternating the dispensing of such materials using different inlet channels. This method allows the production of fibers that can be used as processed or after being further manipulated by other processes, as single devices or as building blocks to construct devices that are more complex. Fibers with different segments along the axis can be exploited for a wide range of applications as medical devices and/or as drug delivery system and/or as matrices to be used for acellular tissue regeneration and cellular tissue engineering/regenerative medicine strategies and/or as supports for imaging in high throughput screening.

Disclosed is an apparatus for continuous spinning of coagulative polymeric microfibers comprising an outer microcatheter, an inner microcatheter having a smaller diameter than the outer microcatheter and inserted inside the outer microcatheter, a double lumen part in which the outer microcatheter and the inner microcatheter are coaxially superimposed with a radially spaced interstitial space, and a single lumen part formed by the outer microcatheter from an end of the inner microcatheter to an end of the outer microcatheter. A core fluid supplied through an interior of the inner microcatheter comprises a coagulative polymeric fluid, and a sheath fluid supplied through the interstitial space comprises a fluid including saline, wherein the core fluid and the sheath fluid may be configured to flow coaxially in the single lumen part to generate and discharge a coagulative polymeric microfiber.

Disclosed is an apparatus for continuous spinning of coagulative polymeric microfibers comprising an outer microcatheter, an inner microcatheter having a smaller diameter than the outer microcatheter and inserted inside the outer microcatheter, a double lumen part in which the outer microcatheter and the inner microcatheter are coaxially superimposed with a radially spaced interstitial space, and a single lumen part formed by the outer microcatheter from an end of the inner microcatheter to an end of the outer microcatheter. A core fluid supplied through an interior of the inner microcatheter comprises a coagulative polymeric fluid, and a sheath fluid supplied through the interstitial space comprises a fluid including saline, wherein the core fluid and the sheath fluid may be configured to flow coaxially in the single lumen part to generate and discharge a coagulative polymeric microfiber.

The present invention generally relates to the design and manufacture of nanofiber layers, webs, films, or membranes that may be self-supporting and can function as standalone products. More particularly, the present invention relates to a microporous nanofiber films and the use of such films in a wide variety of products and applications, including applications where physical property tuning is typically limited. Generally, the microporous films of the present invention can function as a standalone nanofiber membrane or can be bonded to other microporous films to produce a layered stacked film stack with customizable properties. Unlike conventional microporous films available in today's market, the microporous films of the present invention can be lighter, require less raw material cost to produce, and can improve operating performances in a variety of applications.

Disclosed is an apparatus for manufacturing a carbon nanotube fiber.

Disclosed is an apparatus for manufacturing a carbon nanotube fiber.