Stock material or miscellaneous articles – Hollow or container type article – Paper containing
Reexamination Certificate
2008-10-24
2011-12-27
Dye, Rena (Department: 1782)
Stock material or miscellaneous articles
Hollow or container type article
Paper containing
C138S129000, C138S130000, C138S144000, C156S184000
Reexamination Certificate
active
08084108
ABSTRACT:
A core having enhanced ID stiffness is provided. The core includes inner, intermediate, and outer wall zones. The intermediate zone is spring-like in that it minimizes deformation of the inner zone from a radial deflection of the outer zone by absorbing at least some of the deformation. Similarly, the intermediate zone minimizes deformation of the outer zone from a radial deflection of the inner zone by absorbing at least some of the deformation. The intermediate zone includes at least first and second intermediate layers and one or more intermediate support layers. The first and second layers include a number of plies and gaps that are offset from each other, i.e. the plies of the first layer are radially aligned with the gaps of the second layer. The intermediate support layers are between the first and second layers and extend radially across the gaps of the first and second layers.
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European Search Report for Application No. EP 09 25 1492 dated Apr. 9, 2010.
Davis Neil R.
Niu Xiaokai
Rhodes David E.
Alston & Bird LLP
Dye Rena
Lan Yan
Sonoco Development Inc.
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