Electric heating – Metal heating – By arc
Patent
1994-09-16
1996-12-17
Evans, Geoffrey S.
Electric heating
Metal heating
By arc
21912172, B23K 2602
Patent
active
055850170
ABSTRACT:
Method of forming a topographical support member for use in producing nonwoven fabrics such as tricot nonwoven fabrics is accomplished by focusing a laser beam so that the focal point is below the top surface of a starting workpiece. The laser beam is used to drill a predetermined pattern of tapered apertures. The pattern of tapered apertures forms the cluster of peaks and valleys surrounding each aperture on the top surface of the resulting support member.
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James William A.
Kelly William G. F.
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