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.
Claims20
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 form a plurality of open cells upon expansion in a machine direction,
- wherein each of said plurality of slits are straight slits extending substantially parallel to the cross direction,
- wherein the slit width in the cross direction is less than or equal to 0.35 inches,
- wherein said slit pattern includes spaces between rows of slits smaller than or equal to 0.0875 inches, and
- wherein said slit sheet paper is formed from a slit sheet paper having a weight, prior to expansion, of about 30 to about 50 pounds per 3,000 square feet.
Dependencies are inferred from the claim text.