摘要:
Disclosed are articles, such as smoke filters, which contain fibers that have complex geometry in combination with tobacco smoke modifying agents such as flavorants. The fibers are preferably made of a polyester such as poly(ethylene terephthalate) and preferably are capable of spontaneously transporting water or n-decane on their surfaces. The articles of the invention result in improved delivery of the tobacco smoke modifying agent to the user.
摘要:
Disclosed are articles, such as smoke filters, which contain fibers that have complex geometry in combination with tobacco smoke modifying agents such as flavorants. The fibers are preferably made of a polyester such as poly(ethylene terephthalate) and preferably are capable of spontaneously transporting water or n-decane on their surfaces. The articles of the invention result in improved delivery of the tobacco smoke modifying agent to the user.
摘要:
A melt extrusion composition made by combining about 99.9 to about 98.5 weight percent of at least one polyester and about 0.1 to about 1.5 weight percent additive provides for a polyester or copolyester non-circular cross-sectional fiber having at least four percent improved shape retention as compared to the same fiber made from a melt extrusion composition without the additive. The additive is present at the air-polymer interfacial surface during melt spinning. A method of making the fiber is also disclosed.
摘要:
In a process for draw fracturing yarn wherein the yarn is passed through a turbulent flow air suction device downstream of where the yarn is drawn and upstream of an air fracturing jet so that broken filaments extending from the yarn will be intermingled and immobilized by entangling them with unbroken filaments in the yarn so as to reduce yarn breaks.
摘要:
Spinneret orifices the planar cross-section of which defines an elongated slot having a plurality of wing member bar slots intersecting with the elongated slot at spaced intervals along the axial length thereof, and multiple intersecting body section bar slots intersecting with the elongated slot and intersecting with each of the other multiple intersecting body section bar slots at the elongated slot.
摘要:
Spinnerets are used to make synthetic fibers having the unique property of spontaneously transporting water on their surface. The synthetic fibers satisfy the equation (1-X cos .theta..sub.a)
摘要翻译:喷丝头用于制造具有在其表面上自发输送水的独特性质的合成纤维。 合成纤维满足等式(1-Xcosθa)<0,其中θa是在由与纤维相同的材料制成的平坦膜上测量的水的前进接触角,并且具有相同的表面处理(如果有的话) X是纤维横截面的形状因子,其满足以下等式其中Pw是纤维的润湿周长,r是围绕纤维横截面的外接圆的半径,D是短轴尺寸 穿过纤维横截面,并且其中当从合成尿液测试流体的储存器沿着20cm长的斜坡测量到所附接的平台上的吸收剂时,所述纤维的上坡通量值为2至60cc / g / hr 10厘米高。
摘要:
Disclosed are novel composite fibrous structures which have utility as filters. These composite structures have at least two layers. The first layer is a nonwoven fibrous structure made from uniquely grooved fibers. The second layer is of a fibrous material that offers high filter efficiency.. The first layer has significantly lower pressure drop and higher dust holding capacity than the second layer.
摘要:
This invention relates to spinnerets having orifices of unique cross-sections, the spinnerets being useful for extruding therethrough filaments having "U" and "E" shaped cross-sections with stabilizing legs. The use of strategically placed stabilizing legs allow the filaments to maintain the desired shape. The "U" shaped filament cross-section provides improved drainage over previous filament cross-sections.
摘要:
Apparatus for preheating, drafting, and stabilizing in sequence a running yarn strand and including a heated shoe device, freely rotating idler rolls at each end of the heated shoe device and a fixed draw pin with the heated shoe device having two different temperature zones by which the running yarn strand is preheated prior to being drawn when passing over the fixed draw pin, and is thereafter heat stabilized.