A thermoplastic bag may include a sidewall that may have a plurality of first and second ribs formed therein. The first ribs may be longer in length but shorter in height than the second ribs. The second ribs may be arranged in discrete networks that appear superimposed over the first ribs. The second ribs may normally remain in a bent-over configuration. When a force is applied, the second ribs may expand the area of the sidewall so that the bag may easily accommodate large objects. To produce the bag, a thermoplastic web may be directed between opposing first and second rollers. One of the rollers may include ridges that may have first and second segments of differing heights that correspond to the differing heights of the first and second ribs. The formation of the first ribs may increase the width of the web.

A thermoplastic bag may include a sidewall that may have a plurality of first and second ribs formed therein. The first ribs may be longer in length but shorter in height than the second ribs. The second ribs may be arranged in discrete networks that appear superimposed over the first ribs. The second ribs may normally remain in a bent-over configuration. When a force is applied, the second ribs may expand the area of the sidewall so that the bag may easily accommodate large objects. To produce the bag, a thermoplastic web may be directed between opposing first and second rollers. One of the rollers may include ridges that may have first and second segments of differing heights that correspond to the differing heights of the first and second ribs. The formation of the first ribs may increase the width of the web.

An automatic machine for providing corrugated sheet-like elements having a component for the continuous corrugation of a ribbon in motion in a longitudinal direction. The corrugation component includes an upper conveyor and a lower conveyor. The upper conveyor includes a plurality of upper abutment elements that are extended substantially transversely to the longitudinal direction of motion of the ribbon. The lower conveyor includes a plurality of lower abutment elements that are extended substantially transversely to the longitudinal direction of motion of the ribbon. The upper abutment elements are intercalated between the lower abutment elements in a work area. The upper abutment elements each comprise include a flap, which has, in the end adapted to make contact with the ribbon, at least one portion that has a grip component.

An automatic machine for providing corrugated sheet-like elements having a component for the continuous corrugation of a ribbon in motion in a longitudinal direction. The corrugation component includes an upper conveyor and a lower conveyor. The upper conveyor includes a plurality of upper abutment elements that are extended substantially transversely to the longitudinal direction of motion of the ribbon. The lower conveyor includes a plurality of lower abutment elements that are extended substantially transversely to the longitudinal direction of motion of the ribbon. The upper abutment elements are intercalated between the lower abutment elements in a work area. The upper abutment elements each comprise include a flap, which has, in the end adapted to make contact with the ribbon, at least one portion that has a grip component.

Methods for forming carbon-based cellular structures and 3D structures that can be formed by use of the methods are described. Methods include shaping an essentially 2D sheet that includes an organic polymer to form a 3D precursor followed by heat treatment of the 3D precursor. Heat treatment carbonizes the polymer to form an amorphous carbon. A metal precursor solution can be applied to the 3D precursor, and subsequent heat treatment can form a metal carbide, metal nanoparticles, or other carbon-based materials on/in the cellular structures.

A thermoplastic bag may include a sidewall that may have a plurality of first and second ribs formed therein. The first ribs may be longer in length but shorter in height than the second ribs. The second ribs may be arranged in discrete networks that appear superimposed over the first ribs. The second ribs may normally remain in a bent-over configuration. When a force is applied, the second ribs may expand the area of the sidewall so that the bag may easily accommodate large objects. To produce the bag, a thermoplastic web may be directed between opposing first and second rollers. One of the rollers may include ridges that may have first and second segments of differing heights that correspond to the differing heights of the first and second ribs. The formation of the first ribs may increase the width of the web.

A thermoplastic bag may include a sidewall that may have a plurality of first and second ribs formed therein. The first ribs may be longer in length but shorter in height than the second ribs. The second ribs may be arranged in discrete networks that appear superimposed over the first ribs. The second ribs may normally remain in a bent-over configuration. When a force is applied, the second ribs may expand the area of the sidewall so that the bag may easily accommodate large objects. To produce the bag, a thermoplastic web may be directed between opposing first and second rollers. One of the rollers may include ridges that may have first and second segments of differing heights that correspond to the differing heights of the first and second ribs. The formation of the first ribs may increase the width of the web.

A control surface for an aircraft may comprise an outer skin and a core coupled to the outer skin. The core may include a plurality of corrugations. A height of the core may decrease in a direction extending from a leading edge of the control surface to a trailing edge of the control surface.

A control surface for an aircraft may comprise an outer skin and a core coupled to the outer skin. The core may include a plurality of corrugations. A height of the core may decrease in a direction extending from a leading edge of the control surface to a trailing edge of the control surface.

Methods, systems and apparatuses are provided for producing delivery devices, preferably for oral intake of an agent. In the broadest aspect, the method comprises assembling one or more layers comprising one or more materials with an agent or an agent-releasing formulation to form an intergraded, preferably laminated device; folding said integrated delivery device to form a folded integrated delivery device; and at least partially enclosing said folded delivery device to a form suitable for oral delivery. Preferably, the integrated device comprise a first external layer of a first material; a frame of a second material mounted on the first external layer; an agent-releasing formulation housed within the frame; and a second external layer of the first material mounted on the frame.