| 摘要 |
Wiper comprising a matrix of nonwoven fibers having a basis weight generally in the range of from about 25 to 300 gsm and including a meltblown web having incorporated therein a staple fiber mixture including synthetic and cotton fibers. The combination provides highly improved wiping properties as well as strength and absorbency for many industrial applications requiring wiping of oily and/or aqueous materials. The wipers may be formed by a conventional meltblowing process involving extrusion of a thermoplastic polymer as filaments into airstreams which draw and attenuate the filaments into fine fibers having an average diameter of up to about 10 microns. The staple fiber mixture of synthetic and cotton fibers may be added to the airstream, and the turbulence produced where the airstreams meet results in uniform integration of the staple fiber mixture into the meltblown web. The matrix may contain up to 90% by weight of the synthetic and cotton fiber blend, which, itself, may contain up to about 90% by weight of the synthetic fibers. |
