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    • 62. 发明授权
    • Staple fiber, finish therefor and process for use of same
    • 短纤维,其完成和使用的过程
    • US4137181A
    • 1979-01-30
    • US818127
    • 1977-07-22
    • Roland L. Hawkins
    • Roland L. Hawkins
    • D02G3/00D06M11/71D06M13/11D06M13/165D06M13/224D06M15/53D06M23/00D06M13/10
    • D21H5/1254D06M13/165D06M15/53D06M7/00D21H13/00D21H17/71D06M2200/40Y10T428/2907Y10T428/2967Y10T428/2969
    • A composition for short cut, synthetic polymeric staple fibers that are used in a wet lay application for the production of nonwovens is disclosed and claimed herein along with a fiber having the finish thereon and the process for dispersing the fiber in an aqueous medium. Synthetic polymeric filaments are cut into staple lengths, generally in a range of from about 1/4 to about 3 inches in length, and are dispersed in an aqueous medium in conjunction with a composition that includes as an essential ingredient, an ethoxylated primary emulsifier that contains at least five moles of ethylene oxide, and exhibits a surface tension of at least 30 dynes per centimeter in a 0.10 weight percent aqueous solution a 25.degree. C. plus or minus 2.degree. C. Optionally, a lubricant may be added to the finish composition to improve processability of the fiber during manufacture. The lubricant should be compatible with the primary emulsifier. A secondary emulsifier may also be added to emulsify the lubricant, and may additionally assist in dispersing the fiber. The composition may be added to the fiber during the manufacture of same or may be added to the aqueous medium. A preferred composition for addition to the fiber at the time of manufacture includes 50 parts of an ethoxylated castor oil, 25 parts of an ethoxylated sorbitol hexoleate and 25 parts of n-octyl, n-decyl adipate. The composition should further be characterized by a low foaming propensity and as not adversely affecting bondability of the fibers.
    • 用于生产非织造布的湿敷应用中的用于短切合成聚合物短纤维的组合物与其上具有精加工剂的纤维以及将纤维分散在水性介质中的方法一起公开并要求保护。 将合成聚合物长丝切割成长度一般在约1/4至约3英寸范围内的短纤维长度,并与包含作为必需成分的乙氧基化初级乳化剂的组合物结合在一起的水性介质中分散, 含有至少5摩尔环氧乙烷,并且在0.10重量%的25℃±2℃的水溶液中表现出至少30达因/厘米的表面张力。任选地,可将润滑剂加入到完成物中 组合物以改善制造过程中纤维的加工性能。 润滑剂应与初级乳化剂相容。 还可以加入次级乳化剂以乳化润滑剂,并且还可以辅助分散纤维。 组合物可以在其制造过程中加入纤维中,或者可以加入到水性介质中。 用于在制造时添加到纤维中的优选组合物包括50份乙氧基化蓖麻油,25份乙氧基化山梨糖醇六油酸酯和25份正辛基,正癸酸己二酸酯。 该组合物的进一步特征在于低发泡倾向并且不会对纤维的粘合性产生不利影响。