Expanded slit sheet cushioning products with novel slit pattern and paper properties
OwnerDavid Paul Goodrichinventor
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Abstract
In the preferred embodiments, the present invention provides substantially improved slit sheet cushioning products by advantageously combining novel paper properties with novel slit patterns for improved features and characteristics. In some illustrative and non-limiting example embodiments, cushioning products of the present invention can include, e.g., a novel slit sheet material in combination with extensible paper employed as, e.g., a cushioning pad or as cushioning within an envelope product, wherein the cushioning product can be substantially more resilient, but, yet, e.g., thinner for better utilization of space.
Claims75
A slit sheet paper cushioning product, comprising:
- a slit sheet paper having a slit pattern including a plurality of slits extending in a cross direction that forms a plurality of open cells upon expansion in a machine direction,
- wherein slit width in the cross direction is less than 0.35 inches, and said slit sheet paper being formed from an extensible paper made to be extensible in the machine direction and the cross direction without said slit pattern, said extensible paper having an extensibility of at least 5% in the machine direction.
A slit sheet paper cushioning product, comprising:
- a sheet paper having a slit pattern including a plurality of slits extending in a cross direction that forms a plurality of open cells upon expansion in a machine direction,
- wherein slit width in the cross direction is less than 0.35 inches, and said slit sheet paper being formed from an extensible paper made to be extensible in the machine direction and the cross direction without said slit pattern, said extensible paper having an extensibility within a range of 3 to 20% in the machine direction.
A slit sheet paper cushioning product, comprising:
- at least one slit sheet paper having a slit pattern including a plurality of slits extending parallel to a cross direction that forms a plurality of open cells upon expansion in a machine direction,
- wherein the slit width in the cross direction is at least 10% less than 0.5 inches, and said slit sheet paper being formed from an extensible paper made to be extensible in the machine direction and the cross direction without said slit pattern, said extensible paper having an extensibility within a range of 3 to 20% in the machine direction,
- and said slit sheet paper expands into an alternating row expansion pattern that includes a top side and a bottom side spaced a distance from the top side, wherein alternating bottom-side and top-side rows in the cross direction comprise bottom-side rows with bottom-side cell openings having bent peripheries opening downwardly to the bottom side and top-side rows with top-side openings having bent peripheries opening upwardly to the top side.
A slit sheet paper cushioning product, comprising:
- at least one slit sheet paper having a slit pattern including a plurality of slits extending parallel to a cross direction that forms a plurality of open cells upon expansion in a machine direction,
- wherein the slit width in the cross direction is at least 10% less than 0.5 inches, and said slit sheet paper being formed from an extensible paper made to be extensible in the machine direction and the cross direction without said slit pattern, said extensible paper having an extensibility within a range of at least 5% in the machine direction and/or the cross direction,
- and said slit sheet paper expands into an alternating row expansion pattern that includes a top side and a bottom side spaced a distance from the top side, wherein alternating bottom-side and top-side rows in the cross direction comprise bottom-side rows with bottom-side cell openings having bent peripheries opening downwardly to the bottom side and top-side rows with top-side openings having bent peripheries opening upwardly to the top side.
Dependencies are inferred from the claim text.