Abstract: A preparation method of the photochromic polypropylene fiber includes steps below. A photochromic masterbatch is prepared. An ultraviolet light absorber masterbatch is prepared. The ultraviolet light absorber includes A light stabilizer masterbatch is prepared. The light stabilizer includes and n is 10 to 14. A masterbatch mixing step is performed. A melt-spinning step is performed. The photochromic polypropylene mixture is melt-spun to obtain the photochromic polypropylene fiber.

Abstract: This disclosure provides a manufacturing method of a photochromic thermal insulation fiber, which includes preparing a photochromic masterbatch by including mixing 5 parts by weight of a photochromic dye and 95 parts by weight of polypropylene, preparing a near-infrared reflecting masterbatch by including mixing 15 parts by weight of a near-infrared reflecting dye and 85 parts by weight of nylon, preparing a first mixture by including mixing 10 parts by weight of the photochromic masterbatch and 75 parts by weight to 115 parts by weight of polypropylene, preparing a second mixture by including mixing 10 parts by weight of the near-infrared reflecting masterbatch and 65 parts by weight to 140 parts by weight of nylon, and performing a core-sheath melt spinning process with the first mixture and the second mixture to form a core layer and a sheath layer of the photochromic thermal insulation fiber.

Abstract: A photochromic polypropylene fiber is provided. The photochromic polypropylene fiber includes about 98 to 99 parts by weight of polypropylene, about 0.2 to 0.8 parts by weight of a photochromic agent, about 0.1 to 1 parts by weight of an ultraviolet absorber, and about 0.1 to 1 parts by weight of a light stabilizer. The ultraviolet absorber includes and the light stabilizer includes wherein n is 10-14. A preparation method of the photochromic polypropylene fiber is further provided.

Abstract: The present disclosure provides a photochromic thermal insulation fiber including a core layer and a sheath layer covering the core layer. The core layer includes about 99 parts by weight to 100 parts by weight of polypropylene and about 0.4 parts by weight to 0.6 parts by weight of a photochromic dye. The sheath layer includes about 98 parts by weight to 99 parts by weight of nylon and about 1 part by weight to 2 parts by weight of a near-infrared reflecting dye.

Abstract: A fabricating method of a heat-insulating and UV-resistant fabric includes the following steps. A melt-spinning step is performed on a raw material to form a plurality of fibers, in which the raw material includes a near-infrared reflecting masterbatch, the near-infrared reflecting masterbatch includes a near-infrared reflecting dye, and when a content of the fibers is 100 wt %, a content of the near-infrared reflecting dye is 0.5 wt % to 1.0 wt %. The fibers are weaved to form the heat-insulating and UV-resistant fabric. A post-processing dyeing step is performed on the heat-insulating and UV-resistant fabric.

Abstract: An infrared reflecting fiber includes 76.0 parts by weight to 88.5 parts by weight of a carrier, 1.8 parts by weight to 4.0 parts by weight of an infrared reflecting composition, 2.5 parts by weight to 7.5 parts by weight of a titanium dioxide containing composition, and 6.0 parts by weight to 16.0 parts by weight of a color adjusting composition. The carrier includes polyethylene terephthalate (PET). When a content of 5.0 wt % to 7.5 wt % of the infrared reflecting composition and a balance of the carrier are mixed together to form a first fiber, a maximum infrared reflectivity of the first fiber is between 61% and 70%.

Abstract: The present disclosure provides a photochromic thermal insulation fiber including a core layer and a sheath layer covering the core layer. The core layer includes about 99 parts by weight to 100 parts by weight of polypropylene and about 0.4 parts by weight to 0.6 parts by weight of a photochromic dye. The sheath layer includes about 98 parts by weight to 99 parts by weight of nylon and about 1 part by weight to 2 parts by weight of a near-infrared reflecting dye.

Abstract: An infrared reflecting fiber includes 76.0 parts by weight to 88.5 parts by weight of a carrier, 1.8 parts by weight to 4.0 parts by weight of an infrared reflecting composition, 2.5 parts by weight to 7.5 parts by weight of a titanium dioxide containing composition, and 6.0 parts by weight to 16.0 parts by weight of a color adjusting composition. The carrier includes polyethylene terephthalate (PET). When a content of 5.0 wt % to 7.5 wt % of the infrared reflecting composition and a balance of the carrier are mixed together to form a first fiber, a maximum infrared reflectivity of the first fiber is between 61% and 70%.

Abstract: A photochromic polypropylene fiber is provided. The photochromic polypropylene fiber includes about 98 to 99 parts by weight of polypropylene, about 0.2 to 0.8 parts by weight of a photochromic agent, about 0.1 to 1 parts by weight of an ultraviolet absorber, and about 0.1 to 1 parts by weight of a light stabilizer. The ultraviolet absorber includes and the light stabilizer includes wherein n is 10-14. A preparation method of the photochromic polypropylene fiber is further provided.

Abstract: An ultrafine fiber printing system contains a moving deck having a nozzle seat that is disposed on the moving deck. A pipe is installed in the nozzle seat, and a nozzle is disposed at the bottom end of the pipe. The upper portion and the lower portion of the pipe are combined with a heat dissipating unit and a heater respectively. The top end of the pipe is connected to a feed tube having an outer end connected with a thread squeezer. A printing platform is disposed around the moving deck. The nozzle is connected to a static electricity supply, and the fiber carrier is grounded. An electric field is formed between the nozzle and the fiber carrier. The droplets exported from the nozzle are stretched into ultrafine fibers to form a patterned fabric or product.

Abstract: An ultrafine fiber printing system contains a moving deck having a nozzle seat that disposed on the moving deck. A pipe is installed in the nozzle seat and a nozzle is disposed at the bottom end of the pipe. The upper portion and the lower portion of the pipe are combined with a heat dissipating unit and heater respectively. The top end of the pipe is connected to a feed tube having an outer end being connected with a thread squeezer. A printing platform is disposed around the moving deck. The nozzle is connected to a static electricity supply and the fiber carrier is grounded. An electric field is formed between the nozzle and the fiber carrier. The droplets exported from the nozzle are stretched into ultrafine fibers to form a patterned fabric or product.