A method of making a shaped abrasion-resistant multilayer optical film includes providing a curable composition comprising, based on the total weight of components a) to d) components: a) 87 to 96 weight percent of urethane (meth)acrylate compound having an average (meth)acrylate functionality of 2 to 4.8; b) 2 to 12.5 weight percent of (meth)acrylate monomer having a (meth)acrylate functionality of 1 to 2, wherein the (meth)acrylate monomer does not comprise a urethane (meth)acrylate compound; optionally c) 0.5 to 2 weight percent of silicone (meth)acrylate; and d) optional effective amount of photoinitiator. The curable composition is coated onto an MOF. Optionally, the curable composition to is at least partially dried. Next, the curable composition or the at least partially dried curable composition is at least partially cured to provide an abrasion-resistant multilayer optical film. Lastly, the abrasion-resistant multilayer optical film is thermoformed using a female mold having a mold surface. At least a portion of the mold surface has a radius of curvature of 58 to 76 mm and a maximum depth of 13 to 20 mm.

The disclosure relates to forming shaped thermoplastic articles having smooth peripheries. Many thermoplastic articles have sharp edges formed upon molding or cutting the article from a feedstock sheet. Such sharp edges can damage thin plastic films or flesh which they contact, and smoothing the edges is desirable. Described herein are methods of forming a smooth periphery for such sharp-edged articles by rolling over the sharp edge. The smoothing operation is performed by forming a deflectable flange including a bend region separated from the potentially sharp peripheral edge by a spacer, deflecting a portion of the deflectable flange, and softening at least one bent portion of the deflectable flange to yield a smooth periphery upon cooling. The deflection can include curling the spacer at or near the peripheral edge.

A dental aligner and methods and systems for manufacturing the dental aligner. A boundary contour is defined in a two-dimensional space based on an edge of a model aligner in a ruler disc. The boundary contour may be measured on a grid in which the model aligner is formed. The information pertaining to the boundary contour in the model is transferred to a flat workpiece. The boundary contour may follow the patient's gingival margin. A trench is formed in the flat workpiece based on the boundary contour measured in the model aligner. The flat workpiece including the trench is deformed. Deforming the trench forms at least a portion of the edge of the dental aligner and may include a trim boundary. The aligner may be separated from the workpiece at the trim boundary. The model aligner and dental aligner may vacuum thermoformed from the same mold.

The disclosure relates to forming shaped thermoplastic articles having smooth peripheries. Many thermoplastic articles have sharp edges formed upon molding or cutting the article from a feedstock sheet. Such sharp edges can damage thin plastic films or flesh which they contact, and smoothing the edges is desirable. Described herein are methods of forming a smooth periphery for such sharp-edged articles by rolling over the sharp edge. The smoothing operation is performed by forming a deflectable flange including a bend region separated from the potentially sharp peripheral edge by a spacer, deflecting a portion of the deflectable flange, and softening at least one bent portion of the deflectable flange to yield a smooth periphery upon cooling. A liner sheet may be attached to the feedstock sheet prior to, during, or after forming and can be peelable therefrom.

Devices and methods for making devices that temporarily occlude spaces within the body to provide a therapeutic effect.

An example filter comprises a pleated filter element and a preformed filter mounting element for direct mounting of the filter to a face piece or respirator. The filter further comprises an air impermeable seal extending around a periphery of the filter, the air impermeable seal including and bonded by melted plastic material of the pleated filter element and melted plastic material of the preformed filter mounting element.

The disclosure relates to forming shaped thermoplastic articles having smooth peripheries. Many thermoplastic articles have sharp edges formed upon molding or cutting the article from a feedstock sheet. Such sharp edges can damage thin plastic films or flesh which they contact, and smoothing the edges is desirable. Described herein are methods of forming a smooth periphery for such sharp-edged articles by rolling over the sharp edge. The smoothing operation is performed by forming a deflectable flange including a bend region separated from the potentially sharp peripheral edge by a spacer, deflecting a portion of the deflectable flange, and softening at least one bent portion of the deflectable flange to yield a smooth periphery upon cooling.

A heat molded, transparent baffle for instrumental sound deflection is disclosed. The Baffle is a single, molded shield that reflects the sound in any direction the audio engineer decides. It is quickly mounted in one minute, transparent, and ready for sound check.

An automated method of manufacturing a decoupling underlayment membrane is provided, the method retrieving a membrane sheet, thermoforming a set of cavities into a top surface of the membrane sheet and pressing a set of through holes into the membrane sheet.

A thermoform packaging machine including a forming station, a sealing station, a cutting station and a film conveying unit. The film conveying unit includes a clamp chain arranged on a lateral edge of a bottom film, wherein the clamp chain cyclically conveys the bottom film in a direction of production during operation, the bottom film is advanced one cycle length in each cycle of the thermoform packaging machine. Further, the thermoform packaging machine may include a pulling device that pulls a pull section of the bottom film and/or a top film in a direction parallel to the direction of production relative to the lateral edge of the bottom film held by the clamp chain.