Differential ply core for core wound paper products
AssigneeThe Procter & Gamble Company
InventorRandy Gene Ogg
Life of this patent
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Abstract
A two-ply core for core wound paper products. The inner ply of the core has more resistance to compression than the outer ply. The outer ply may have more resistance to tension than the inner ply. The two-ply core is suitable for use with core-wound paper products and particularly those which have been diametrically compressed. The core may comprise two plies of differing basis weights, wherein the inner ply has a greater basis weight than the outer ply.
Claims11
A core for spirally wrapping paper products therearound, said core comprising an inner ply and an outer ply securely joined in face-to-face relationship,
- said inner ply having more resistance to compression than said outer ply,
- said core being prestressed.
A core for spirally wrapping paper products therearound, said core comprising an inner ply and an outer ply securely joined together in face-to-face relationship,
- said inner ply and said outer ply each having a basis weight,
- said inner ply and said outer ply being made of identical materials, but differing in the basis weights of said identical materials,
- said inner ply having a greater basis weight than said outer ply.
Dependencies are inferred from the claim text.