Apparatus for the manufacture of a material in the form of sheet

Details Apparatus for the manufacture of a material in the form of sheet Apparatus for the manufacture of a material in the form of sheet

1987-09-30

1989-03-21

Chin, Peter

Paper making and fiber liberation

Apparatus

With cutting, scoring, perforating or tearing

51 22, 51 74R, 162362, D21H 506

Patent

active

048140430

ABSTRACT:
A material (1) in the form of sheets or a web is provided with a watermarklike pattern (12) in form of a text, figure or similar identification mark visible or displayable in transmitted light by means of relieflike mechanical working off of material, for example grinding, milling etc., corresponding to the desired pattern (12).

REFERENCES:
patent: 4645484 (1987-02-01), Niske
patent: 4711797 (1987-12-01), Niske
patent: 4746058 (1988-05-01), Niske

Affiliated with

Also associated with

Rating

Apparatus for the manufacture of a material in the form of sheet does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for the manufacture of a material in the form of sheet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for the manufacture of a material in the form of sheet will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-475219