Card stock sheets with improved severance means
OwnerGerald B. Kleininventor
Life of this patent
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Abstract
A card stock sheet prepared for subsequent severance along a perforation line in the sheet defined by a sequence of closely spaced perforations and a continuous score cut at one surface of the sheet, extending part way into the sheet and coinciding with the perforation line with the uncut portions of the sheet between the perforations maintaining sheet integrity and with the score cut line providing a smooth edge when severance occurs.
Claims10
In a paper stock, a severance line comprising a score cut extending part way into the paper stock and a line of closely spaced perforations coinciding with the score cut line extending from the inner end of the score cut to the opposite side of the paper stock, whereby to permit the severance line to be severed by separation of stock portions at the perforations, and to provide smooth severed edges.
In a paper stock having a line of closely spaced perforations whereby the sheet portions at each side of the perforations may be separated along the perforation line, the improvement comprising a continuous score cut in one side of the sheet coinciding with the perforation line, extending part way into the sheet to connect with the perforations of the perforation line, whereby the uncut portions of the sheet between the perforations hold the sheet together but the sheet may be separated by severing said uncut portions.
A method for preparing a paper stock for subsequent separation along a perforation line in the sheet defined by a sequence of closely spaced perforations, including the step of imposing a continuous score cut at one surface of the sheet extending part way into the sheet and coinciding with the perforation line with uncut portions of the sheet between the perforations maintaining sheet integrity.
Dependencies are inferred from the claim text.