Manufactureing method of lightweight melt-blown hot-melt nonwoven fabric comprising hydrophobic nano silica
AssigneeSam Bu Fine Chemical Co., Ltd.
InventorHeedae PARK
Life of this patent
Estimating the term…
Abstract
The lightweight melt-blown hot-melt nonwoven fabric containing hydrophobic nanosilica according to the manufacturing method of the present invention performs an adhesive function when interposed between adherends such as fabric, even if a smaller amount of adhesive resin is applied than a conventional hot-melt film, it has the effect of saving material costs and energy by about 10 to 50% while ensuring uniformity of adhesive strength for each section, excellent peel strength, and good breathability. As a result, fabric products using the melt-blown hot-melt nonwoven fabric can prevent overflow during the adhesion process and achieve lightness and a soft texture.
Claims12
A method for producing a lightweight melt-blown hot-melt nonwoven fabric containing hydrophobic nanosilica, the method comprising:
- a first step of preparing an adhesive resin comprising a resin selected from the group consisting of thermoplastic polyurethane (TPU) and ethylene vinyl acetate (EVA), the adhesive resin further comprising hydrophobic nanosilica with a particle size of 1 to 100 nm in a range of 0.1 to 5 parts per hundred resin (phr);
- a second step of extruding the adhesive resin in an extruder and then melt-spinning melt-spun fibers through a spinning nozzle to form a melt-blown nonwoven web;
- and
- a third step of trimming and winding the melt-blown nonwoven web.
Dependencies are inferred from the claim text.