| 摘要 |
In the present invention, there is disclosed a process for producing non-woven fabric by a spunmelt process of a polymer, the basis of which is at least one polyolefin, comprising a barrier and antistatic finish, especially for protective garments for industry and health care. A polyolefin polymer, which is suitable for forming fibers, is mixed with a first additive capable of modifying a material surface property and capable of migration through the polymer wherein the additive is selected from the group consisting of compounds containing fluorocarbon. Wax and silicon groups wherein this mixture is used for producing at least one layer of the nonwoven fabric by a spunmelt process, and prior to the termination of the migration of the first additive and to the stabilizing of the final barrier properties on the surface of the fibers a second additive is applied to the layer, the second additive being capable of modifying the antistatic property of the material. Finally, the nonwoven fabric is exposed to a temperature and relative humidity conditions for a time period such that the first additive migrates towards the surface and the second additive undergoes changes on said surface. |
