Paper making and fiber liberation – Processes and products – Multi-layer waterlaid webs or sheets
Reexamination Certificate
2002-08-30
2009-12-08
Fortuna, José A (Department: 1791)
Paper making and fiber liberation
Processes and products
Multi-layer waterlaid webs or sheets
C162S127000, C162S158000, C162S205000, C428S172000, C428S034700, C206S524100, C206S216000
Reexamination Certificate
active
07628885
ABSTRACT:
An uncoated paperboard for packages composed of one or more layers with a top layer of bleached kraft pulp having a gloss value of 15-50% measured according to Tappi T480, a minimal gloss variation (a coefficient of variation in the wavelength regions 3-30 mm of less than 5%), and a surface roughness (PPS-10) of 2-5 μmm measured according to ISO 8791-4, wherein the paperboard has a density in the range of 700 to 850 kg/m3and is hydrophobic from a sizing agent treatment of each layer, is described. A package comprising the paperboard is suitable for co-sterilization of the package and its contents.
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Aksberg Rein
Håkansson Sven
Hübinette Mats
Bacon & Thomas PLLC
Fortuna José A
Korsnas AB (PUBL.)
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