Electrostatic shielding sheet for making a box used for shipping

Details Electrostatic shielding sheet for making a box used for shipping Electrostatic shielding sheet for making a box used for shipping

1992-05-18

1994-10-11

Thompson, Gregory D.

Electricity: conductors and insulators

Anti-inductive structures

Conductor transposition

174 35R, 428615, 428621, 428623, 361818, 361816, H05K 900

Patent

active

053549503

ABSTRACT:
An electrostatic shielding material sheet (10) for making a shipping box (12, 12a) to enclose and protect electronic components and/or assemblies--and the box itself--is characterized by different layers (14, 16, 18, 20) forming an electrostatic shielding material sheet (10), one layer (16) thereof being highly conductive with a surface resistivity of less than 1.times.10.sup.4 Ohm/sq--preferably 10.sup.2 to 10.sup.3 Ohm/sq--and being allocated to electrostatic dissipative layers (14, 18) with a surface resistivity of between 1.times.10.sup.5 Ohm/sq and 1.times.10.sup.12 Ohm/sq. The highly conductive layer (16) is sandwiched between electrostatic dissipative layers (14, 18) or embedded in one of the other layers (14, 18, 20). Additionally, the electrostatic shielding layer (16) shall contain highly conductive fibers.

REFERENCES:
patent: 4553190 (1985-11-01), Mueller
patent: 5110669 (1992-05-01), Knobel et al.

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