Multilayer polymer sheets are provided, as well as related methods, systems, and appliances.

Multilayer polymer sheets are provided, as well as related methods, systems, and appliances.

A multilayer sheet comprising first, second, and third layers is provided. The first layer consists of a co-polyester having an elongation at break of greater than 70%. The second layer consists of a thermoplastic polyurethane elastomer having an elongation at break of greater than 200% and a hardness of about 60 A to about 85 D. The first layer has a hardness greater than the hardness of the second layer. A mold is provided and the multilayer sheet is thermoformed over the mold to form a plurality of tooth-receiving cavities configured to receive and position a patient's teeth from a first arrangement toward a second arrangement. Excess material is trimmed from the thermoformed multilayer sheet to form the multilayer dental aligner.

Multilayer polymer sheets are provided, as well as related methods, systems, and appliances.

Multilayer polymer sheets are provided, as well as related methods, systems, and appliances.

A photochromic polyurethane laminate that is constructed to solve certain manufacturing difficulties involved in the production of plastic photochromic lenses is disclosed. The photochromic laminate includes at least two layers of a resinous material and a photochromic polyurethane layer that is interspersed between the two resinous layers and which contains photochromic compounds. The polyurethane layer is formed by curing a mixture of a solid thermoplastic polyurethane, at least one isocyanate prepolymer, at least one photochromic compound, and a stabilizing system.

Multilayer polymer sheets are provided, as well as related methods, systems, and appliances.

The present disclosure relates to new laminate films whereby a contact layer is adhesive laminated to a base layer, such as a metal foil, or whereby a co-extrusion layer comprising a contact layer and at least one tie layer is adhered to a base layer, as well as uses of the laminate films to wrap APIs such as nicotine, fentanyl, lidocaine and rivastigmine, wherein the contact layer comprises COC, PA, EVOH, CBC, PVDF, COP, HDPE or EMAA.

A decorative sheet including: a material sheet of which a surface roughness R1 on a front side is greater than a surface roughness R2 on a back side; a first adhesive layer provided on the front side of the material sheet; a thin film layer provided above the front side of the material sheet via the first adhesive layer; a second adhesive layer provided on the back side of the material sheet; and a sheet support layer provided below the back side of the material sheet via the second adhesive layer, in which each of the layers is integrated as one sheet, and an air layer exists on an interface between the first adhesive layer and a trough of an uneven shape on the front side of the material sheet.

According to at least one embodiment, there is provided a hard coat laminated film, including, from a surface layer side, a second hard coat, a first hard coat, and a transparent resin film layer, where the first hard coat and the transparent resin film layer are laminated directly, where the first hard coat is formed of a coating material including: (A) 100 parts by mass of a polyfunctional (meth)acrylate; and (B) 1 to 100 parts by mass of an N-substituted (meth)acrylamide compound, where the second hard coat is formed of a coating material containing no inorganic particles, and where the transparent resin film is a transparent multilayer film or a transparent monolayer film made of a poly(meth)acrylimide resin, where the transparent multilayer film includes a surface layer made of a poly(meth)acrylimide resin, the first hard coat being formed on the surface layer.