A curable resin composition comprising; component (A) monofunctional 2-(allyloxymethyl) acrylic acid or its ester; component (B) a polyfunctional radically polymerizable compound having an isocyanurate ring; component (C) a radically polymerizable compound; component (D) rubber particles; and component (E) a radical polymerization initiator, the component (C) is a radically polymerizable compound different from the component (A) and the component (B); and when the sum of the component (A), the component (B) and the component (C) is 100 parts by mass, the component (B) is 20 parts by mass or more to 80 parts by mass or less and the component (C) is 0 parts by mass or more to 40 parts by mass or less.

The present invention provides improved devices, systems and methods for repositioning teeth from an initial tooth arrangement to a final tooth arrangement. Repositioning is accomplished with a system comprising a series of polymeric shell appliances configured to receive the teeth and incrementally reposition individual teeth in a series of successive steps. The individual appliances may be formed from layers having different stiffnesses (elastic moduluses), and the stiffnesses of successive appliances may be different, or both.

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

An additive manufacturing ink composition includes a polysiloxane bearing a plurality of alkenyl groups and a crosslinking agent bearing a plurality of thiol groups. The polysiloxane and the crosslinking agent form an emulsion.

An engineered structural member for use as, for example a stud, and a method for producing an engineered structural member. The method includes placing two spaced-apart flange members, preferably from nominal dimension solid lumber, in a mold cavity, inserting a two-part mixture of polyurethane material between the flange members, closing the mold and applying pressure to density the two-part polyurethane material during curing, and removing the completed engineered structural member from the mold. Preferably, the multiple engineered structural members are produced in multiple mold cavities, either sequentially, for example, on a rotary molding machine, or simultaneously, for example, in a series of molds which are filled and closed together. The engineered structural member provides increased insulation capacity to a structure while reducing structure weight, improving strength and improving dimensional instability.

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.

An electronic device includes a flexible display module, a window on the flexible display module, and a protective base film on the window, and having a first modulus at a first temperature and a second modulus lower than the first modulus at a second temperature 80° C. higher than the first temperature, wherein the difference between the first modulus and the second modulus may be no greater than about 985 MPa.

In some embodiments, a cushion material is disclosed. The cushion material is configured to be 3D-printable. The cushion material includes a plurality of gyroid lattice structures configured to be 3D-printable. The plurality of gyroid lattice structures are aligned along, and with respect to, a surface of the cushion material. In some embodiments, a method for providing a cushion material that is capable of being 3D printed is disclosed. The method includes generating a design of the cushion material comprising a variable mechanical stiffness across a surface of the cushion material. The method further includes producing the cushion material via additive manufacturing based on the design. Generating the design includes generating a layout design of a plurality of tube-like shaped gyroid lattice structures of the cushion material aligned with the surface of the cushion material.

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.