A battery separator comprises a co-extruded, microporous membrane having at least two layers made of extrudable polymers and having: a uniform thickness defined by a standard deviation of <0.80 microns (m); or an interply adhesion as defined by a peel strength >60 grams.

Method and device for connecting two webs (1), reinforced with unidirectionally oriented continuous fibres, by ultrasonic welding, wherein the fibres are embedded in a matrix of polycarbonate and the webs have abutting edges that are substantially square and substantially flat, characterized by the following steps:arranging the webs abutting one another in the region of the abutting edges in a welding device between a sonotrode (2) and an anvil (3),welding the webs by means of ultrasound, wherein the sonotrode and the anvil exert pressure on the webs to be welded in the melting region between the webs and perpendicularly to the abutting edges of the webs,removing the welded-together webs (4) from the welding device.

Method and device for connecting two webs (1), reinforced with unidirectionally oriented continuous fibres, by ultrasonic welding, wherein the fibres are embedded in a matrix of polycarbonate and the webs have abutting edges that are substantially square and substantially flat, characterized by the following steps:arranging the webs abutting one another in the region of the abutting edges in a welding device between a sonotrode (2) and an anvil (3),welding the webs by means of ultrasound, wherein the sonotrode and the anvil exert pressure on the webs to be welded in the melting region between the webs and perpendicularly to the abutting edges of the webs,removing the welded-together webs (4) from the welding device.

A composition for three-dimension (3D) printing, a method for 3D printing, and a resulting article having porous structure are provided. Such a composition includes from 50% to 100%o by weight of a base polymer comprising polyolefin (such as ultra-high molecular weight polyethylene), from 0% to 50% by weight of a glue polymer (such as HDPE or PP), and optionally additive. A composition can be applied in a layer, and the base polymer and the glue polymer each has a predetermined size or size distribution. The composition is sintered in a selected area to form a layer of a solid article, which has a predetermined pore size or pore size distribution. The predetermined particle size or size distribution for each of the base polymer and the glue polymer is determined through computer simulation based on the predetermined pore size or pore size distribution in the layer of the solid article.

The present invention provides a method for preparing an ultra high molecular weight polyethylene (UHMWPE) composite material including the following steps: providing a substrate material having medical grade ultra high molecular weight polyethylene powders, drying the substrate material to obtain fully dried UHMWPE powders, and pressing the fully dried UHMWPE powders to form a UHMWPE board; immersing the UHMWPE board into a graphene oxide solution and performing an ultrasonic induction by an ultrasonic processor such that the graphene oxide solution infiltrates into the UHMWPE substrate to obtain an ultra high molecular weight polyethylene composite material with excellent biocompatibility and tribological properties. The graphene oxide can be adsorbed and evenly spread on the surface of UHMWPE substrate by ultrasonic induction to form a lurbricating film which can effectively reduce wear.

Methods and compositions directed to blends of acrylonitrile butadiene styrene (ABS) with styrene ethylene butadiene styrene (SEBS) are disclosed. In certain aspects, the blends further include an ultrahigh molecular weight polyethylene (UHMWPE). In a further aspect, the blends are compatible with 3D printing platforms.

The present invention includes an injection moldable/extrudable composite that preserves at least 80% or enhances the primary physical properties of compression molded polymer, the composite comprising, e.g., an Ultra High Molecular Weight Polyethylene (UHMWPE) and graphene/graphite oxide or graphene oxide, with or without polypropylene.

Biocompatible and implantable in the human body plastic material, for the obtainment of a device that can be implanted in the human body or a spacer device in order to treat a bone or a joint location, including an acrylic resin or polyethylene (PE) or low density polyethylene or high density polyethylene or ultra-high molecular weight polyethylene (UHMWPE) or polypropylene or polyamide or polyetheretherketone (PEEK) or a thermosetting resin or a mixture of the same, wherein the material can be molded and includes at least one pharmaceutical or medical substance; device implantable in the human body or spacer device for treating a bone or a joint location, obtained by the material above and method for manufacturing the material according to the present invention.

A method for producing a microporous material comprising the steps of: providing an ultrahigh molecular weight polyethylene (UHMWPE); providing a filler; providing a processing plasticizer; adding the filler to the UHMWPE in a mixture being in the range of from about 1:9 to about 15:1 filler to UHMWPE by weight; adding the processing plasticizer to the mixture; extruding the mixture to form a sheet from the mixture; calendering the sheet; extracting the processing plasticizer from the sheet to produce a matrix comprising UHMWPE and the filler distributed throughout the matrix; stretching the microporous material in at least one direction to a stretch ratio of at least about 1.5 to produce a stretched microporous matrix; and subsequently calendering the stretched microporous matrix to produce a microporous material which exhibits improved physical and dimensional stability properties over the stretched microporous matrix.

A method of forming a component for a vehicle according to an exemplary aspect of the present disclosure includes, among other things, forming the component of an ultra-high-molecular-weight-polyethylene (UHMWPE) and a stiffening filler. A bracket and a running board assembly are also disclosed.