Apparatus and method for fabricating a perforated web by light

Details Apparatus and method for fabricating a perforated web by light Apparatus and method for fabricating a perforated web by light

1992-12-24

1995-01-17

Albritton, C. L.

Electric heating

Metal heating

By arc

21912174, 21912182, B23K 2600

Patent

active

053827732

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.

REFERENCES:
patent: 4302654 (1981-11-01), Bennet et al.
patent: 4507535 (1985-03-01), Bennette et al.

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