Hydroentanglement screen
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United States of America Patent
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Issued Date -
Apr 6, 2006
app pub date -
Nov 21, 2003
filing date -
Nov 21, 2002
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Abandoned
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Abstract
A method of producing a screen for forming a nonwoven material by hydroentanglement. The method includes the steps of providing a layer of radiation curable polymeric resin material in fluid form. Further, the step of irradiating at least one layer of radiation curable polymeric resin material in fluid form through at least one mask selectively transparent to the radiation, so as to effect at least partial curing of the material of the at least one layer in positions corresponding with radiation-transparent regions of the mask. Further still, the step of removing uncured polymeric material to form one or more apertures within the at least one layer. Wherein the radiation-transparent regions of the mask have different sizes and shapes and are distributed randomly, such that the one or more apertures provided in the cured polymeric material of the screen are not provided in a regular pattern or form.
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