Apparatus and method for fabricating a perforated web by light
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United States of America Patent
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-
Jan 17, 1995
Issued Date -
N/A
app pub date -
Dec 24, 1992
filing date -
Dec 27, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for fabricating a perforated web comprising an endless masking plate arranged above a continuously conveyed web. The masking plate has a plurality of apertures arranged in a predetermined pattern, the masking plate being adapted so as to be continuously circulated. The light is irradiated to the web via the masking plate so that apertures or slits are formed in the web corresponding to the apertures of the masking plate. The light may be a laser, an infrared light, or an ultraviolet light, and the light from the source is diverged transversely about the web and converged longitudinally about the web.
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