Heat sealable paperboard blanks
First Claim
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1. A PAPERBOARD OF A CALIPER OF FROM ABOUT 8 TO ABOUT 30 POINTS CONTAINER BLANK OF THE TYPE ADAPTED TO BE SEALED ALONG AT LEAST ONE OVERLAPPING PORTION, A MOISTURE BARRIER AND HEAT SEALING COATING COMPPOSITION HAVING A VISCOSITY AT 220* F. IN THE RANGE OF FROM ABOUT 40 TO 400 CENTIPOISES, A FAST SET-UP TIME, A HIGH SET-UP TEMPERATURE, GOOD BLOCKING RESISTANCE, AND LOW SLIP-RESSISTANCE APPLIED TO AT LEAST ONE MAJOR SURFACE OF SAID BLANK AND APPLIED ON AT LEAST SAID SEALING PORTION OF SA ID BLANK, SAID COATING COMPOSITION PRESENTING PROJECTIONS IN A PREDETERMINED PATTERN THEREON.
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1 Claim
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1. A PAPERBOARD OF A CALIPER OF FROM ABOUT 8 TO ABOUT 30 POINTS CONTAINER BLANK OF THE TYPE ADAPTED TO BE SEALED ALONG AT LEAST ONE OVERLAPPING PORTION, A MOISTURE BARRIER AND HEAT SEALING COATING COMPPOSITION HAVING A VISCOSITY AT 220* F. IN THE RANGE OF FROM ABOUT 40 TO 400 CENTIPOISES, A FAST SET-UP TIME, A HIGH SET-UP TEMPERATURE, GOOD BLOCKING RESISTANCE, AND LOW SLIP-RESSISTANCE APPLIED TO AT LEAST ONE MAJOR SURFACE OF SAID BLANK AND APPLIED ON AT LEAST SAID SEALING PORTION OF SA ID BLANK, SAID COATING COMPOSITION PRESENTING PROJECTIONS IN A PREDETERMINED PATTERN THEREON.
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Current AssigneeRobert F. Hawkins
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Original AssigneeRobert F. Hawkins
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InventorsHawkins, Robert F.
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Application NumberUS04/366,970Time in Patent Office699 DaysField of SearchUS Class Current229/5.84CPC Class CodesB65D 65/42 Applications of coated or i...D21H 23/68 whereby the paper moves con...Y10S 229/917 Stacking of collapsed conta...
