A first layer that is a peelable film includes a bonding sublayer and a sealing sublayer. The bonding sublayer includes a non-neutralized ethylene acid copolymer, The scaling sublayer includes a first polyethylene and an ethylene acid copolymer or blends thereof. The first layer is adapted to withstand exposure to sterilization processes and the first layer can be essentially free of blistering.

An actuator is described, including a first sheet comprising a plurality of first openings,; and a second sheet comprising a plurality of second openings; wherein the first and second sheets are stacked together such that at least one of the first and second openings are misaligned; and the actuator is configured to move from a first state to a second state, wherein in the first state, out-of-plane motion of the first and second sheets is permitted; and in the second state, the first and second sheets as well as the misaligned first and second openings are jammed together to restrict the out-of-plane motion of the first and second sheets. Methods of actuating and making such actuator are also described.

A multilayer corrugated board which can be smoothly bent from a planar state to a curved state without failure even at small radii of curvature, as well as a container made from such board. The materials and mechanical properties of the layers of the board are selected such that each layer inward of the outermost layer in the bent state buckles simultaneously and reversibly between each flute of the adjacent innermost corrugated layer.

An adhesive formulation comprising a) a polyurethane composition; and b) a latent catalyst which is the reaction product of i) an amidine-containing compound, a guanidine-containing compound, or an amine-containing compound; ii) carbon dioxide; and iii) water, an alcohol, an amine, or a thiol, is disclosed.

An adhesive formulation comprising a) a polyurethane composition; and b) a latent catalyst which is the reaction product of i) an amidine-containing compound, a guanidine-containing compound, or an amine-containing compound; ii) carbon dioxide; and iii) water, an alcohol, an amine, or a thiol, is disclosed.

A rotor unit is disclosed. The rotor unit includes a hub and a stacked rotor blade. The hub is configured to rotate about an axis in a first rotation direction. The stacked rotor blade is rotatable about the axis and further includes a first blade element and a second blade element. The first blade element has a first leading edge and the second blade element has a second leading edge. The blade elements are arranged in a stacked configuration. A leading edge of the stacked rotor blade is formed by at least a portion of the first leading edge of the first blade element as well as at least as portion of the second leading edge of the second blade element. In some embodiments, the rotor unit is coupled to an unmanned aerial vehicle.

A multilayer flexible film for packaging a transdermal patch product comprising a pharmaceutical active agent comprises: a product-contacting sealing layer comprising a co-polyester having a surface energy of at least 50 dyne/cm.sup.2; and one or more layers above the product-contacting sealing layer. The pharmaceutical active agent may comprise nicotine. An average adhesion force to peel the transdermal patch from the product-contacting sealing layer may be less than 100 g/inch (39.37 g/cm).

Provided is an adhesive comprising a reaction product of (A) an aliphatic polyisocyanate having a molecular weight of from 132 to 700; and (B) a polyaspartate comprising a reaction product of (B1) a polyamine having a molecular weight of at least 240, and (B2) a Michael addition receptor, wherein viscosity @ 23° C. according to ASTM D1084-16, remains below 150 cps after four hours, and wherein the adhesive develops an acceptable bond strength to a substrate, defined as having a minimum of 150 g/in. measured @ 23° C. according to ASTM D 1876-01 or substrate tear, in less than five days after the substrate is laminated with the adhesive. The inventive flexible packaging adhesives are free of aromatic amines and may find use in multilayer laminates for a variety of industries, including the food processing, cosmetics, and detergents industries.

A sheet laminate for being used as a puncturable top web for a blister package, comprising: an aluminium base sheet layer; at least one tie layer comprising polyolefin; a welding layer comprising polyester or polypropylene; wherein the welding layer and the tie layer are coextrusion coated on the base sheet layer so that the at least one tie layer is disposed between the base sheet layer and the welding layer, whereby the welding layer is attached to the base sheet layer by the at least one tie layer. A blister package, wherein the sheet laminate is attached to a bottom web with product cavities. A method of manufacture of the sheet laminate and of the blister package, wherein the coextrusion coating step of the manufacture of the blister package is carried out simultaneously with extrusion lamination of a paper layer.

A sheet laminate for being used as a puncturable top web for a blister package, comprising: an aluminium base sheet layer; at least one tie layer comprising polyolefin; a welding layer comprising polyester or polypropylene; wherein the welding layer and the tie layer are coextrusion coated on the base sheet layer so that the at least one tie layer is disposed between the base sheet layer and the welding layer, whereby the welding layer is attached to the base sheet layer by the at least one tie layer. A blister package, wherein the sheet laminate is attached to a bottom web with product cavities. A method of manufacture of the sheet laminate and of the blister package, wherein the coextrusion coating step of the manufacture of the blister package is carried out simultaneously with extrusion lamination of a paper layer.