Method for perforating a sheet-shaped material and perforating a

Details Method for perforating a sheet-shaped material and perforating a Method for perforating a sheet-shaped material and perforating a

1987-12-23

1988-08-30

Albritton, C. L.

Electric heating

Metal heating

By arc

131281, 21912171, 21912177, B23K 2600

Patent

active

047679093

ABSTRACT:
A sheet-shaped material such as tipping paper of a cigarette is perforated by comprising the steps of:

REFERENCES:
patent: 4118619 (1978-10-01), McArthur et al.
patent: 4701591 (1987-10-01), Masakig et al.

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