| 摘要 |
A method of producing a screen (10), on which a nonwoven material may be formed by hydroentanglement, involves providing a layer of radiation curable polymeric resin material (12) in fluid form and irradiating this layer through a mask (22), selectively transparent to the radiation, so as to effect at least partial curing of the layer (12) in positions corresponding with radiationtransparent regions of the mask (22). The uncured polymeric material is then removed and any necessary subsequent full cure of the residual material takes place. The radiation-transparent regions of the mask (22) have various sizes and shapes and are distributed randomly such that apertures (15) provided in the cured polymeric material of the screen are not provided in a regular pattern or form. |
