This invention discloses a method for preparing
yarn with antibacterial and
flame-retardant functions, belonging to the field of
yarn preparation technology. The invention includes the following steps: Step a:
Flame-retardant
polyester fibers and silver-impregnated
zirconium phosphate antibacterial modified
polyester fibers are subjected to antistatic padding treatment, controlling the
moisture regain at 4%-6%; Step b: A multi-layer web-laying
machine is used to construct a three-layer
fiber web structure of "
flame-retardant
fiber - antibacterial
fiber -
flame-retardant fiber", wherein the flame-retardant fiber accounts for 70%-85% of the total
mass, and the antibacterial fiber accounts for 15%-30%. The
yarn produced by this invention has a gradient structure. From the
raw material pretreatment, each step is closely linked. Utilizing the structure of "flame-retardant core layer - antibacterial intermediate layer - flame-retardant
surface layer," the antibacterial components are effectively protected, greatly improving wash resistance. Simultaneously, the rationally distributed flame-retardant components can quickly form a
char layer upon contact with fire to isolate
oxygen, significantly improving safety and providing reliable protection for applications in special scenarios, meeting the demands of today's market.