Electric heating – Metal heating – By arc
Patent
1990-05-17
1991-04-23
Albritton, C. L.
Electric heating
Metal heating
By arc
21912161, 21912185, B23K 2600
Patent
active
050102311
ABSTRACT:
A method of forming lines of weakness in or grooving a plastic material, especially a packaging material, by local vaporization or degradation by means of a laser beam, which laser beam and which plastic or packaging material can be moved in relation to each other, wherein the laser beam is generated by means of a wavelength tunable laser tuned to a wavelength selected on the basis of the wavelength depending absorption spectrum of the material to be processed.
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Albritton C. L.
LPF Verpakkingen B.V.
Michaelson Peter L.
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