Patterned substrates having a first substrate region that is incrementally mechanically stretched with corrugations and a second substrate region having a plurality of discrete unstretched portions completely surrounded by the first substrate region.

A sandwich structure employs a core sheet including alternating peaks and valleys therein, and at least one outer face sheet including grooves or ribs therein. In another aspect, a sandwich structure includes at least one core and at least one adhesively bonded outer face sheet including elongated grooves or ribs formed therein. Yet another aspect of a sandwich structure has raised ridges bridging between adjacent peaks in a core sheet in one direction but not in a perpendicular direction, which synergistically interface, engage or contact with grooves or ribs formed in an outer face sheet.

A nonwoven web for an absorbent article is provided. The nonwoven web comprises a first surface, a second surface, and a visually discernible pattern of three-dimensional features on the first surface or the second surface. The three-dimensional features comprise one or more first regions and a plurality of second regions. The one or more first regions are different than the plurality of second regions in a value of an average intensive property. The one or more first regions comprise a first line, a second line, and a third line extending at least partially intermediate the first line and the second line. The first line and the second line extend in substantially the same direction. The third line extends in a direction transverse to the first line and the second line.

A sandwich structure employs a core sheet including alternating peaks and valleys therein, and at least one outer face sheet including grooves or ribs therein. In another aspect, a sandwich structure includes at least one core and at least one adhesively bonded outer face sheet including elongated grooves or ribs formed therein. Yet another aspect of a sandwich structure has raised ridges bridging between adjacent peaks in a core sheet in one direction but not in a perpendicular direction, which synergistically interface, engage or contact with grooves or ribs formed in an outer face sheet.

A method for producing a panel includes steps of providing a core element, covering the core element with a strip of impregnable flexible material that continues beyond the core element, providing a following core element alongside the preceding covered core element on that portion of the strip of flexible material that extends beyond the preceding core element, covering the following core element with a following strip of flexible material that extends beyond the following core element, and repeating each of those steps at least once. The method further includes impregnating the strips of material with a hardenable fluid, and hardening the impregnated strips. Each following strip of flexible material is fitted over the top face of a following core element, as well as over the preceding strip of flexible material extending over the top face of a preceding core element.

A corrugated sheet metal wall sheathing for resisting external excitations such as wind or earthquake of light-framed wall structures. The sheathing has sheet profile proportioned to insure the top flutes deform laterally and yield at the end of the flute before the onset of any failure mode. A transverse slot in included ineach top flute and adjacent web of the sheathing and spaced at intervals along the length of the sheathing.

A blow-molded plastic frame of a portable collapsible sign includes a first outer portion, a second outer portion spaced apart from the first outer portion, and a pattern of structural stiffening features formed in the first and second outer portions. The pattern comprises rows and columns of first depressions extending from the first outer portion into a hollow interior portion between the first and second outer portions, and rows and columns of second depressions extending from the second outer portion into the hollow interior portion. Each first depression has a first floor comprising three first arms having rotational symmetry. Each first arm is rotated from another first arm by 120 degrees. Each second depression has a second floor comprising three second arms having rotational symmetry. Each second arm is rotated from another second arm by 120 degrees. The first floor of each first depression is aligned with the second floor of an adjacent second depression.

A plate-shaped chemical heat storage comprising a substrate composed of a net made of metal and a heat storage material composition supported on the substrate, wherein the heat storage material composition comprises at least one selected from the group consisting of magnesium hydroxide or oxide, strontium hydroxide or oxide, barium hydroxide or oxide, calcium hydroxide or oxide, and calcium sulfate, and optionally at least one selected from the group consisting of titanium dioxide, silicon dioxide, alumina silicate fiber, E-glass fiber and cellulose.

A laminate material having a decorative appearance has a plurality of layers that are bonded together with at least one of the layers having a first orientation. A portion of at least one of the layers adjacent to an exterior surface of the material is deviated into a second orientation differing from the first orientation. The exterior surface of the material is substantially flat, thereby revealing multiple layers at the exterior surface. Each layer may comprise a sheet that is pre-impregnated with a thermosetting resin. A form having a surface feature may be pressed into the exterior surface of the material while the layers are bonded together to deviate a portion of at least one of the layers adjacent to an exterior surface of the material into the second orientation. The invention also includes a method of generating a laminate material having a decorative appearance.

According to some illustrative embodiments, a protective product is provided that includes: at least one expandable slit paper sheet, said at least on expandable slit paper being expanded between opposing ends of said slit paper; a first embossed paper sheet facing said expanded slit paper sheet and a second paper sheet facing an opposite side of said at least one expanded slit paper sheet, at least one of said first embossed paper sheet and said second paper sheet being fixed to said expanded slit paper sheet at the opposing ends of said expanded slit paper sheet and thereby maintaining said expanded paper in its expanded state, said first embossed paper sheet having a plurality of embossings that increase the rigidity of said embossed paper sheet, whereby inhibiting deformation of said embossed paper sheet that is fixed to said expanded slit sheet paper.