Improved containment mats and systems of containment mats may include multiple adjoining mats with a top surface and a bottom surface. The multiple mats may provide a modular structural mat system that may be installed at a drill site, with multiple mats placed adjacent to each other with a lap joint connecting adjacent mats. A geotextile may be used to cover the lap joints and a coating applied to the geotextile. Such a system may provide containment of potential spills, a reliable working surface for drilling operations, and relatively fast and less expensive installation.

An engineered wood panel assembly includes a first layer including a first set of billets that abut against each other along a lengthwise edge of the billets. Each billet includes one or more joints connecting adjacent sheets within the billet, and the joints are oriented perpendicular to the lengthwise edge. Each of the sheets in the first layer includes at least one ply comprising wood grain oriented in a first direction. A second layer including a second set of billets of sheets is layered on top of the first layer. Each billet in the second set includes one or more additional joints that are oriented perpendicular to a lengthwise edge of the second set of billets. The additional joints in the second layer are offset from the joints in the first layer, and each of the sheets in the second layer includes at least one ply having wood grain oriented in a second direction. Additionally, a third layer including a third set of billets of sheets may be layered on top of the second layer.

Improved containment mats and systems of containment mats may include multiple adjoining mats with a top surface and a bottom surface. The multiple mats may provide a modular structural mat system that may be installed at a drill site, with multiple mats placed adjacent to each other with a lap joint connecting adjacent mats. A geotextile may be used to cover the lap joints and a coating applied to the geotextile. Such a system may provide containment of potential spills, a reliable working surface for drilling operations, and relatively fast and less expensive installation.

A hybrid composite panel suitable for forming a container includes a wood layer and a fiber-reinforced polymer composite layer having a sensor system embedded therein. The wood layer is laminated plywood that includes at least one of hard and soft wood, solid-sawn tongue-and-groove hardwood planks, and partially laminated solid-sawn hardwood.

An engineered wood panel assembly includes a first layer including a first set of billets that abut against each other along a lengthwise edge of the billets. Each billet includes one or more joints connecting adjacent sheets within the billet, and the joints are oriented perpendicular to the lengthwise edge. Each of the sheets in the first layer includes at least one ply comprising wood grain oriented in a first direction. A second layer including a second set of billets of sheets is layered on top of the first layer. Each billet in the second set includes one or more additional joints that are oriented perpendicular to a lengthwise edge of the second set of billets. The additional joints in the second layer are offset from the joints in the first layer, and each of the sheets in the second layer includes at least one ply having wood grain oriented in a second direction. Additionally, a third layer including a third set of billets of sheets may be layered on top of the second layer.

Improved containment mats and systems of containment mats may include multiple adjoining mats with a top surface and a bottom surface. The multiple mats may provide a modular structural mat system that may be installed at a drill site, with multiple mats placed adjacent to each other with a lap joint connecting adjacent mats. A geotextile may be used to cover the lap joints and a coating applied to the geotextile. Such a system may provide containment of potential spills, a reliable working surface for drilling operations, and relatively fast and less expensive installation.

A hybrid composite panel suitable for forming a container includes a wood layer and a fiber-reinforced polymer composite layer having a sensor system embedded therein. The wood layer is laminated plywood that includes at least one of hard and soft wood, solid-sawn tongue-and-groove hardwood planks, and partially laminated solid-sawn hardwood.

The present invention relates to a layer structure, preferably a hinge, particularly preferably a book cover, very particularly preferably a book cover for identification and security documents, comprising at least one outer layer a) containing at least one thermoplastic elastomer, preferably a thermoplastic polyurethane, and at least one layer b) containing at least one material selected from the group consisting of a polymer, a metal, a textile, a paper and a synthetic paper, or a combination of at least two of these, and also relates to a laminate comprising the above layer structure and to the method for producing same. The invention further relates to the use of the layer structure and/or laminate for the production of a hinge, preferably a multilayer book cover, especially for security and identification documents.