Abstract: A polymeric yarn composition having antimicrobial and/or antibacterial properties includes: (i) an herbal masterbatch, and (ii) a base polymer. The base polymer may include one of polybutylene terephthalate (PBT) or polyethylene terephthalate (PET), or polyamides, or polypropylene. Further, the herbal masterbatch may include: (a) an herbal component includes Neem or Turmeric or extract or combination thereof, and (b) a carrier polymer. The carrier polymer may be the same as the base polymer and may include one of: PBT, PET, polyamides or polypropylene. To make a polymeric yarn, the herbal masterbatch and the base polymer may be melted and extruded together to obtain the polymeric yarn having the herbal component in a range of 0.01% to 10% by weight of the polymeric yarn.

Abstract: Disclosure provides a twisted and heat-set Bulked Continuous side-by-side bi-component Filament (BCF) yarn including a plurality of side-by-side bi-component filaments, each includes first and second polymer components. The first polymer component forms a first side of the side-by-side bi-component filaments, and includes polybutylene terephthalate (PBT) in at least 25 and up to 75 volume percent of the filament in the BCF yarn. Further, the second polymer component forms a second side of the side-by-side bi-component filaments, and includes one of polyethylene terephthalate (PET) or polylactic acid (PLA) in at most 75 and down to 25 volume percent of the filament in the BCF yarn. The twisted and heat-set BCF yarn is obtained by a single-step continuous process, and subsequently followed by steps of twisting and/or cabling and heat-setting.