Provided is a strand board with improved strength and water resistance. Reduction in productivity is prevented and characteristics of the strand board can be varied as desired while achieving certain strength and water resistance of the strand board. A strand board B is formed by stacking and laminating five strand layers 1 each formed by a large number of strands 5. The strand board B has substantially constant density distribution in the lamination direction of the strand layers 1. Three of the five strand layers 1 of the strand board B are high-density strand layers 1a having a higher density than the other strand layers 1, and the other strand layers 1 are low-density strand layers 1b.

Provided is a strand board with improved strength and water resistance. Reduction in productivity is prevented and characteristics of the strand board can be varied as desired while achieving certain strength and water resistance of the strand board. A strand board B is formed by stacking and laminating five strand layers 1 each formed by a large number of strands 5. The strand board B has substantially constant density distribution in the lamination direction of the strand layers 1. Three of the five strand layers 1 of the strand board B are high-density strand layers 1a having a higher density than the other strand layers 1, and the other strand layers 1 are low-density strand layers 1b.

A composite wood panel is manufactured from thin wood laminae cut from wood unsuitable for peeler logs or dimensional lumber. A cold set adhesive is applied to the wood laminae and they are formed into a randomly oriented mat that is cold rolled into a thin, pliable cold rolled stock that can be corrugated. A hot set adhesive may also be applied to the laminae to improve strength of the composite wood panel. The hot set adhesive is set in a hot press after the cold rolled stock is produced.

A composite wood panel is manufactured from thin wood laminae cut from wood unsuitable for peeler logs or dimensional lumber. A cold set adhesive is applied to the wood laminae and they are formed into a randomly oriented mat that is cold rolled into a thin, pliable cold rolled stock that can be corrugated. A hot set adhesive may also be applied to the laminae to improve strength of the composite wood panel. The hot set adhesive is set in a hot press after the cold rolled stock is produced.

A sheet includes a pseudo-sheet structure including a plurality of linear-bodies with a volume resistivity R of from 1.0 × 10.sup.-7 Ωcm to 1.0 × 10.sup.-1 extending in one direction, aligned parallel to one another, and spaced apart from one another, satisfies the relation: L/D ≥ 3, wherein D represents the diameter of the linear-bodies, and L represents the spacing between adjacent ones of the linear-bodies, and also satisfies the relation: (D.sup.2/R) × (⅟L) ≥ 0.003, wherein D represents the diameter of the linear-bodies, L represents the spacing between adjacent ones of the linear-bodies, R represents the volume resistivity of the linear-bodies, and D and L are in units of cm. A heating element and a heating device each include the sheet.

A sheet includes a pseudo-sheet structure including a plurality of linear-bodies with a volume resistivity R of from 1.0 × 10.sup.-7 Ωcm to 1.0 × 10.sup.-1 extending in one direction, aligned parallel to one another, and spaced apart from one another, satisfies the relation: L/D ≥ 3, wherein D represents the diameter of the linear-bodies, and L represents the spacing between adjacent ones of the linear-bodies, and also satisfies the relation: (D.sup.2/R) × (⅟L) ≥ 0.003, wherein D represents the diameter of the linear-bodies, L represents the spacing between adjacent ones of the linear-bodies, R represents the volume resistivity of the linear-bodies, and D and L are in units of cm. A heating element and a heating device each include the sheet.

The construction and design of new multi-laminate sheet materials for the fabrication of shipping containers, boxes, furniture, consumer items, and many other products, including those generally using panels in their design, is disclosed. These new materials are produced by employing advanced folding techniques, to yield lightweight, cost effective multi-laminates. At least one layer in the multi-laminate structure is a folded sheet tessellation which, in some embodiments, can have doubly periodic folded geometries with fold creases in multiple non-parallel directions. The various layers of the construction can interlock with each other to collectively provide mechanical stiffness, strength, energy absorption and other properties.

A composite panel includes a plurality of segments, wherein each segment includes a plurality of reinforcement plies such as carbon fiber plies. Collimated fiber bands (e.g., carbon fibers) within each reinforcement ply are oriented in a single direction, which can be, for example, 0°, 45°, 90°, and −45°. Each segment can include a stack of reinforcement plies, wherein the collimated fiber bands of each reinforcement ply are oriented in one of these directions. The orientations of the collimated fiber bands that form the reinforcement plies in a stack determine a stiffness of the stack and the segment that includes the stack. The stiffness of each segment is controlled to reduce a stiffness mismatch between adjacent segments that form the composite panel, thereby reducing separation of the segments during use.

An architectural covering with an operable vane having a fabric backing is provided. The vane may include a vane fabric and a backing material connected to the vane fabric by a layer of adhesive. The backing material may increase a machine-direction stiffness of the vane while slightly affecting a cross-direction stiffness of the vane. As such, the vane may have increased stiffness in its machine direction while simultaneously remaining flexible in its cross direction.

An architectural covering with an operable vane having a fabric backing is provided. The vane may include a vane fabric and a backing material connected to the vane fabric by a layer of adhesive. The backing material may increase a machine-direction stiffness of the vane while slightly affecting a cross-direction stiffness of the vane. As such, the vane may have increased stiffness in its machine direction while simultaneously remaining flexible in its cross direction.