51results about How to "Excellent unwinding property" patented technology

The invention discloses a polyurethane fiber dry spinning oil agent, which comprises 30 to 80 weight percent of dimethyl silicon oil, 10 to 50 weight percent of mineral oil, 1 to 7.5 weight percent of high-carbon isomeric fatty alcohol or acid, 1 to 5 weight percent of dispersed component, 0.1 to 1.5 weight percent of stearate and 2 to 20 weight percent of antistatic component. The dispersed component is a mixture of an organic silicon surfactant and acrylic acid-maleic acid copolymer, and the weight ratio of the organic silicon surfactant to the crylic acid-maleic acid copolymer is 1:0.5-2; and the antistatic component is a mixture of polyether silicon oil and nonionic isomeric alcohol polyethenoxy ether, and the weight ratio of the polyether silicon oil to the nonionic isomeric alcohol polyethenoxy ether is 1:0.5-2. The polyurethane fiber dry spinning oil agent has excellent smoothness, softness, antistatic property, stable performance and excellent anti-adherent performance; polyurethane fiber treated by the oil agent has good unreeling property and forming property; and in the subsequent processing flow, polyurethane filaments are easy to unreel, not drop edge and has few broken filaments.

The invention discloses a polyurethane fibre spinning oil. Its composition includes (by wt%) 5-80% of mineral oil, 10-75% of silicone oil, 0.5%-30% of epoxyethane and epoxypropane copolyether, 0.5%-50% of polyether silicone oil, 0.5-15% of antistatic agent and 0.1-10% of anti-sticking property improving agent.

A winding method for forming a cylindrical shape bobbin is provided, whereby, an intersection angle (alpha) is varying while the yarn is winded. To guide yarn, a yarn intersection angle (alpha M) at the center zone in the bobbin winding process is between 15-28 degrees and the yarn intersection angle (alpha R) towards the edge zones of two ends of the winding package is larger than that of the center zone.

The invention relates to spandex spinning oil with a function of enabling exterior-interior unwinding to be uniform, and a preparation method of the spandex spinning oil. The spandex spinning oil is prepared by mixing a component A and a component B, wherein the component A is prepared from the following components by weight: 80-92% of dimethyl silicone oil, 1-10% of modified silicone oil, 0.5-5%of silane containing special functional groups and 1-8% of silicon resin; the component B is prepared from the following components by weight: 80-90% of mineral oil, 5-15% of a W / O type emulsifying agent, 1-5% of an antistatic agent and 0.5-2% of modified magnesium stearate; the mixing ratio of the component A to the component B is equal to (1.5 to 1)-(1 to 1.2). The oil which is prepared by the method and is used for polyurethane elastic fibers is yellowish transparent liquid, and not only can enable spandex fibers to have excellent formability in a winding process, but also has higher surface energy and has stronger adsorption to polyurethane so as to enable the polyurethane not to easily migrate to the surfaces of the fibers from the inner layers of the fibers, thus endowing the spandexfibers with more uniform exterior-interior unwinding and further enabling the spandex fibers to be smoothly unwound and not to be broken in the subsequent application.