EMI and RFI shielding and antistatic materials and processes for

Details EMI and RFI shielding and antistatic materials and processes for EMI and RFI shielding and antistatic materials and processes for

1987-09-28

1990-03-20

Chin, Peter

Paper making and fiber liberation

Processes and products

Multi-layer waterlaid webs or sheets

162128, 162129, 162135, 162138, 162146, 1621818, 206328, 2065242, 2065243, 2065244, 427121, 428449, 428452, 428535, 4285377, D21H 102

Patent

active

049099019

ABSTRACT:
The present invention provides a multilayer fibrous material suitable for use as an EMI and RFI shielding packaging material and a process for producing the same comprising first and second outer layers formed of paper or paperboard and an inner layer formed of paper or paperboard containing conductive carbon. The invention also provides a method of providing antistatic properties to the packaging material.

REFERENCES:
patent: 3048515 (1962-08-01), Dalton
patent: 3367851 (1968-02-01), Filreis et al.
patent: 3653894 (1972-04-01), Levy et al.
patent: 4532099 (1985-07-01), Kaji
patent: 4606790 (1986-08-01), Youngs et al.
patent: 4645566 (1987-02-01), Kato et al.
patent: 4658958 (1987-04-01), McNulty et al.
patent: 4711702 (1987-12-01), Hood
patent: 4728395 (1988-03-01), Boyd

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