Protective containerboard for electrostatic discharge sensitive devices
AssigneeSunclipse, Inc.
InventorBob Vermillion
Life of this patent
Estimating the term…
Abstract
Currugated sheeting for enclosing electrostatically sensitive devices in the form of an undulating sheet medium presenting alternating fluting apexes on opposite sides of the sheet medium, the medium being impregnated with an electrical resistivity of 10,000 ohms per square or less, and a kraft paper liner covering adhered to the fluting apexes on each side of the medium.
Claims33
Corrugated sheeting for enclosing electrostatically sensitive devices, said sheeting comprising:
- an undulating sheet medium having opposite first and second sides presenting alternating fluting apexes, said medium being sufficiently impregnated with an electrically conductive material to impart to said medium an electrical resistivity equal or lesser than ten thousand ohms per square
- first and second plain kraft paper liner coverings adhered to said fluting apexes on said first and second opposite sides respectively.
Recyclable corrugated sheeting for enclosing electrostatically sensitive devices, said sheeting comprising:
- a carbon impregnated corrugated paper medium having an electrical resistivity equal to or lesser than ten thousand ohms per square;
- and
- first and second kraft liner coverings adhered to opposite sides of said medium;
- wherein said kraft liner has an electrical resistivity of between ten to the sixth power and ten to the eleventh power ohms at a relative humidity greater than ten percent.
Corrugated sheeting for enclosing electrostatically sensitive devices, said sheeting comprising:
- an undulating sheet medium of paper material having opposite first and second sides presenting alternating fluting apexes, said paper material being impregnated with carbon to impart to said medium an electrical resistivity equal or lesser than ten thousand ohms per square;
- first and second kraft liner coverings adhered to said fluting apexes on said first and second opposite sides respectively said kraft liners each having an outer surface facing away from said medium, said outer surface being coated with an electrostatically dissipative layer, the coated kraft liner being characterized by an electrical resistivity of between ten to the sixth power and ten to the eleventh power ohms and a static charge drain rate from 5 kilovolt to 500 Volt of no more than approximately 2 seconds.
Sheeting for use in packaging electrostatically sensitive devices, said sheeting comprising:
- a carbon impregnated corrugated paper medium having an electrical resistivity equal to or lesser than ten thousand ohms per square;
- and
- first and second kraft liner coverings adhered to opposite sides of said medium, each of said liners having outer surfaces coated with an electrostatically dissipative colored ink.
A method for making recyclable sheeting for use in packaging electrostatically sensitive devices comprising the steps of:
- providing a carbon impregnated corrugated medium in continuous roll form, said corrugated medium having an electrical resistivity lesser than ten thousand ohms per square;
- providing kraft paper liner in continuous roll form;
- preprinting one surface of said kraft paper liner with an electrostatically dissipative ink;
- and
- applying in continuous roll form said kraft liner paper to each side of said medium by adhering an unprinted opposite surface of the kraft liner paper to the apexes of the corrugations of the medium.
A method for making recyclable sheeting for use in packaging electrostatically sensitive devices comprising the steps of:
- providing a carbon impregnated corrugated medium in continuous roll form, said corrugated medium having an electrical resistivity lesser than ten thousand ohms per square;
- providing kraft paper liner in continuous roll form;
- printing one surface of said kraft paper liner first with one or more layers of an electrostatically dissipative ink and then with one or more layers of protective varnish over said ink, said layers being applied successively in a single pass of said kraft paper liner through a printing press;
- and
- applying in continuous roll form said kraft liner paper to each side of said medium by adhering an unprinted opposite surface of the kraft liner paper to the apexes of the corrugations of the medium.
Recyclable corrugated sheeting for enclosing electrostatically sensitive devices, said sheeting comprising:
- a carbon impregnated corrugated paper medium having an electrical resistivity equal to or lesser than ten thousand ohms per square;
- and
- first and second kraft liner coverings adhered to opposite sides of said medium;
- wherein said kraft liner is characterized by a static charge drain rate from 5 kilovolt to 500 Volt of no more than approximately 2 seconds at a relative humidity greater than ten percent.
Dependencies are inferred from the claim text.