A network of microfibers are fabricated with a core-shell construction from sustainable materials, where the core includes a phase-change material, such as coconut oil, and the shell includes a biomass, such as cellulose. The microfibers are made via a wet-wet electrospinning process utilizing a coaxial spinneret with an inner conduit and an outer conduit. The biomass and the phase-change material are coaxially extruded into a coagulation bath including a mixture of ethanol and water. The collected microfibers exhibit a beaded structure of PCM aggregates and biomass connecting regions between the aggregates and are effective to aid in the thermoregulation of the immediate environment surrounding the network. The microfibers are suitable for use in a variety of sustainable products such as wearable thermoregulating textiles, wall/ceiling panels, insulation, packaging material, and more.

A network of microfibers are fabricated with a core-shell construction from sustainable materials, where the core includes a phase-change material, such as coconut oil, and the shell includes a biomass, such as cellulose. The microfibers are made via a wet-wet electrospinning process utilizing a coaxial spinneret with an inner conduit and an outer conduit. The biomass and the phase-change material are coaxially extruded into a coagulation bath including a mixture of ethanol and water. The collected microfibers exhibit a beaded structure of PCM aggregates and biomass connecting regions between the aggregates and are effective to aid in the thermoregulation of the immediate environment surrounding the network. The microfibers are suitable for use in a variety of sustainable products such as wearable thermoregulating textiles, wall/ceiling panels, insulation, packaging material, and more.

A composite tape (1) is provided comprising at least a first layer (3) comprising a plurality of first continuous polymer filaments (32) defining a development axis (32a) and at least in part a plurality of mutually identical outlines (33) arranged in succession along said development axis (32a); a second layer (4) of second continuous polymer filaments (40) forming a surface layer of tape (1) and placed in contact with the first layer (3); wherein the outline (33) is determined on a section plane (32b) normal to the development axis (32a), defining a first extension area on the section plane (32b) and being inscribable in a circle determined on the section plane (32b) and defining a second extension area on the section plane (32b); and wherein the first extension area is less than 90% of the second extension area.

A composite tape (1) is provided comprising one or more matrices (2) of high thickness polymeric fibres comprising pores; at least one first layer (3) in contact with the matrix (2) and including a mixture (30) at least in part penetrating the pores, and comprising, mutually mixed together, a plurality of cellulose particles (31), and a plurality of continuous first polymer filaments (32) defining, before being mixed with the particles (31), a development axis (32a) and defining at least in part a plurality of mutually identical outlines (33) arranged in succession along the development axis (32a); a second layer (4) of continuous second polymer filaments (40) forming a surface layer of the tape (1) and placed in contact with the matrix (2) and/or the first layer (3) without penetrating the pores; wherein the outline (33) is determined on a section plane (32b) normal to the development axis (32a), defining a first extension area on the section plane (32b) and being inscribable in a circle determined on the section plane (32b) and defining a second extension area on the section plane (32b); and wherein the first extension area is less than 90% of the second extension area.

An artificial down filling material comprising artificial down clusters (1), wherein each of the down clusters (1) comprise a number of filaments (10) arranged side by side in a bundle, the filaments (10) being bonded, preferably melt bonded, together at a bonding location 20, wherein the filaments (10) are self-crimped, multi-component filaments (10), the cross-section of the multi-component filament having at least three corners (211).

The present disclosure provides a non-woven fabric, a separator, and a battery. The non-woven fabric includes a structural fiber, and the structural fiber includes a circular cross-section fiber and a profiled fiber; and a cross section of at least part of the profiled fibers has a perimeter coefficient being X.sub.L, with 1<X.sub.L5. The present disclosure can improve the strength of the non-woven fabric while maintaining its relatively small thickness, thereby simultaneously improving the safety, cycle life, energy density and other properties of the battery.

An artificial down filling material comprising artificial down clusters, wherein each of the down clusters comprise a number of filaments arranged side by side in a bundle, the filaments being bonded, preferably melt bonded, together at a bonding location, wherein the filaments are self-crimped, multi-component filaments, the cross-section of the multi-component filament having at least three corners.