In an embodiment a multilayer film includes a first layer having a polypropylene heterophasic copolymer and/or a polypropylene homopolymer, a second layer having a polyamide copolymer and/or a polyamide homopolymer and a nucleating agent and a third layer including a coupling agent, the third layer being disposed between the first layer and the second layer, wherein the multilayer film has an asymmetric layer sequence.

A multilayer film comprising at least three film layers including: (a) at least a first polyolefin film layer, wherein the first polyolefin film layer comprises a first outer film layer; (b) at least a second polyolefin film layer, wherein the second polyolefin film layer comprises a core film layer; and (c) at least a third polyolefin film layer, wherein the third polyolefin film layer comprises a second outer film layer; wherein the at least a third polyolefin film layer is the same or different than the at least first polyolefin film layer; wherein the at least second core polyolefin film layer is disposed in between, and separates, the first and third film layers; wherein the first, second and third film layers are contacted together to form a multilayer film structure; wherein at least one of the polyolefin film layers of the three-layer film structure is prepared from a polymer blend composition comprising: (i) at least a first ethylene-based polymer resin; wherein the at least first ethylene-based polymer resin comprises a catalyzed linear low density polyethylene having an altered molecular structure prepared using a Ziegler-Natta Catalyst System 1, which is prepared as described in Preparation 1 in the description; and (ii) at least a second ethylene-based polymer resin; wherein the at least second ethylene-based polymer resin comprises a low density polyethylene resin; and wherein the multilayer film comprising a catalyzed linear low density polyethylene having an altered molecular structure prepared using a Ziegler-Natta Catalyst System 1, which is prepared as described in Preparation 1 in the description, exhibits at least a 10 percent increase in puncture resistance compared to the puncture resistance of a multilayer film that include a catalyzed linear low density polyethylene resin having a non-altered molecular structure prepared using a Ziegler-Natta catalyst; a process for preparing the multilayer film; and an article made from the multilayer film.

A thermoplastic resin composition includes a base resin with one or more alkyl acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A), one or more (meth)acrylic acid alkyl ester (B), 0.5 to 3.5 parts by weight of one or more UV stabilizer (C) selected from the group consisting of a benzotriazole-based UV stabilizer, a benzoate-based UV stabilizer, and a benzophenone-based UV stabilizer, and greater than 0.6 parts by weight and 2 parts by weight or less of an NH-type HALS-based UV stabilizer (D).

A method of making a film by coextruding a multi-layer structure comprising at least one skin layer comprising a metallocene-based polypropylene random copolymer. A coextruded multi-layer film comprising at least one skin layer comprising a metallocene-based polypropylene random copolymer, and a flexible package compromising such a coextruded multi-layer film are also provided.

Disclosed is a composition useful for forming blown films. The composition includes (a) an ungrafted ethylene-based polymer, (b) a nanocomposite containing a polyamide and montmorillonite, (c) a compatibilizer comprising a maleic anhydride grafted ethylene-methyl acrylate copolymer and/or a maleic anhydride grafted ethylene-butyl acrylate copolymer, and (d) optionally, an ethylene-vinyl alcohol (EVOH) copolymer. Also disclosed is a blown film made from a composition containing an ungrafted ethylene-based polymer, a nanocomposite containing a polyamide and montmorillonite, a compatibilizer comprising a maleic anhydride grafted ethylene-based polymer, and optionally, an EVOH copolymer. These films can have improved optical and/or mechanical properties compared to films made without the nanocomposite.

A polymer composition for producing gel extruded articles is described. The polymer composition contains polyethylene particles combined with a plasticizer. The polyethylene polymer has a narrow molecular weight distribution. Polymer articles made in accordance with the present disclosure have enhanced strength properties. In one embodiment, the polymer composition is used to form a porous membrane for use as a separator in electronic devices.

Provided herein are curable compositions useful for, among other things, making three-dimensional parts by additive manufacturing. The compositions when cured exhibit a surprising balance of improved tensile strength and percent elongation.

Provided is a single material plastic push-through blister pack for food and pharmaceutical packaging and a method of making thereof. The blister package may be produced by thermoforming polymer films for the cavity and a cavitated polymer film made from the same class of polymer comparatively lower thickness for the substrate or lid. To facilitate the push through breaking, the polymer film used as the lidding film may be modified to a microcavitated film by creating micro-voids/cavities and micro-brittleness within the polymer matrix. These micro-voids/cavities, and/or embedded microcrystalline particles present in the polymer matrix of the lidding film, may create internal cracks in the film by application of a small external force, which may then result in rupturing of the lid film to dispense a product from the cavity of the blister pack.

The present invention relates to a reinforced thermoplastic film comprising a base film wherein the base film comprises a stretchable polyolefin material comprising one or more layers and a plurality of extruded reinforcing fibre elements. The extruded reinforcing fibre elements are located on at least one surface of the base film and form fibre protrusions relative to the surface plane of the base film. At the location where each reinforcing fibre element is provided on the base film, an interface is formed comprising direct interactions between a base film domain and a protrusion domain. The base film domain is a domain of pure base film material and the protrusion domain is a domain of pure reinforcing fibre element material. The interface between the base film domain and the protrusion domain is interrupted by one or more discrete intermixed domains, wherein the intermixed domains comprise a material mixture comprising the base film material and the reinforcing fibre element material. The one or more intermixed domains partially interrupt the direct interactions at the interface between the base film domain and the protrusion domain. Furthermore, the one or more intermixed domains have interfaces and direct interactions with the base film and protrusion domains. The average thickness of the base film is less than the average thickness of the fibre protrusion. The films of the invention have controllable physical and mechanical properties such as tensile strength, elongation at break, tear resistance, coefficient of friction and adhesion.

The present invention provides a multi-layer polymeric film comprising a core layer; a first skin layer; and at least one intermediate layer between the core layer and the first skin layer; wherein the at least one intermediate layer comprises a cavitating agent such that it is cavitated; and wherein the first skin layer side of the film exhibits a roughness level (Rz) of greater than 2 m, measured in accordance with ISO 4287.