Wax-based compositions for making barrier layers used in oral treatment devices are thermally stable when formed into a flat sheet or three-dimensional article to a temperature of at least 45? C. and are plastically deformable at room temperature (25? C.). The wax-based compositions include a wax fraction homogeneously blended with a polymer fraction. The wax fraction includes at least one wax and the polymer fraction includes at least one polymer selected such that, when the at least one wax and at least one polymer are homogeneously blended together, they yield a wax-based composition having the desired properties of thermal stability and plastic deformability. Barrier layers and oral treatment devices made from such wax-based compositions are dimensionally stable to a temperature of at least 40? C. without external support and can be plastically deformed in a user's mouth to become at least partially customized to the size and shape of user's unique dentition.

In a first aspect, the disclosure provides; a composite laminate. The laminate is made of: a first exterior layer comprising a biocompatible material; a second exterior layer comprising a biocompatible material; and a first inner layer comprising biocompatible threads running parallel to each other and oriented at zero degrees. The layers are laminated together. The disclosure further provides; a method for creating a biocompatible composite laminate. The method includes laying biocompatible threads parallel to one another to create a first middle thread layer on a first biocompatible material exterior layer, and placing a second biocompatible exterior material layer over the parallel biocompatible threads. The laminate is heated and compressed to bond the layers together.

Methods of fabricating three-dimensional rubber-like objects which utilize one or more modeling material formulations which comprise an elastomeric curable material and silica particles are provided. Objects made of the modeling material formulations and featuring improved mechanical properties are also provided.

A method for forming a shaped composite structure. The method includes laying a composite laminate stack onto a mold, where the composite laminate stack comprises fabric laminate and resin and wherein the mold presents a predetermined shape, draping a vacuum film comprising polyethylene onto the composite laminate stack, thereby establishing an evacuatable volume between the vacuum film and the mold, applying suction to the evacuatable volume between the mold and the vacuum film to establish at least a partial vacuum within the evacuatable volume, thereby compressing the composite laminate stack via pressure applied to the vacuum film responsive to the at least partial vacuum within the evacuatable volume, and heating the composite laminate stack while applying suction to the evacuatable volume, thereby at least partially consolidating the laminate stack.

Methods of fabricating three-dimensional rubber-like objects which utilize one or more modeling material formulations which comprise an elastomeric curable material and silica particles are provided. Objects made of the modeling material formulations and featuring improved mechanical properties are also provided.

A multilayer machine direction oriented film comprising at least an (A) layer and (B) layer, at least one of said (A) layer or (B) layer comprising at least 50 wt % of a multimodal linear low density polyethylene (LLDPE) having a density of 905 to 940 kg/m.sup.3 and an MFR.sub.2 of 0.01 to 20 g/10 min and comprising a lower molecular weight (LMW) component and a higher molecular weight (HMW) component; wherein said LMW component is an ethylene homopolymer and said HMW component is an ethylene polymer of ethylene with at least two C4-12 alpha olefins; wherein said film is a stretched film which is uniaxially oriented in the machine direction (MD) in a draw ratio of at least 1:3 and has a film thickness of at least 40 microns (after stretching) and wherein said film does not comprise a layer in which more than 50 wt % of said layer comprises a polymer component having a melting point (Tm) of 100 C. or less.

The present invention is directed to polyethylene films having improved properties. Particularly, relatively thick films having improved tear properties and methods of improving tear, and multilayer films having improved dart impact strength and methods of improving the Dart impact strength.

A breathable film is formed from a formulation including one or more resins and fillers. The breathable film is formed from a process including machine-direction and cross direction stretching.

A blown polypropylene film or sheet is disclosed. The film or sheet can include at least 95 wt. % of a polypropylene, and at least one ?-nucleating agent or crystallization inhibitor, where the polypropylene blown film or sheet has a thickness of 0.5 mils to 15 mils, and where the polypropylene blown film has an increased dart impact strength, as measure by ASTM D1709, when compared with a second polypropylene blown film or sheet that has the same components in the same wt. % amounts as the polypropylene blown film or sheet except that the second polypropylene blown film or sheet does not include the at least one ?-nucleating agent or crystallization inhibitor.

A composite includes a heavy Leno weave fabric, a first resin coating, and a second resin coating. The heavy Leno weave fabric has a first side and a second side. The fabric is characterized by yarns having a denier number of at least about 1,300 in both warp and weft directions. The fabric defines a pore structure. The first resin coating is on the first side of the heavy Leno weave fabric. The second resin coating is on the second side of the heavy Leno weave fabric. The first and second resin coatings are bound to each other through the fabric via the pore structure.