A foam forming device has an inlet, an outlet and a longitudinal axis that leads from the inlet to the outlet. The foam forming device has a plurality of surface pairs. Each surface pair has two opposing surfaces. The surfaces delimit a foaming space at least to some extent. At least one of the surfaces of the surface pairs is an adjustable surface whose orientation relative to the longitudinal axis can be adjusted. The first surface pair and the second surface pair are off-set from one another along the periphery of the foaming space. Also disclosed is a foam extrusion apparatus having a foam forming device.

Embodiments of the disclosure relate to an optical fiber cable having at least one optical fiber, a cable jacket and a foam layer. The cable jacket includes an inner surface and an outer surface in which the outer surface is an outermost surface of the optical fiber cable. The inner surface is disposed around the at least one optical fiber. The foam layer is disposed between the at least one optical fiber and the cable jacket. The foam layer is made of an extruded product of at least one thermoplastic elastomer (TPE), a chemical foaming agent, and a crosslinking agent. The foam layer has a closed-cell morphology having pores with an average effective circle diameter of less than 100 m. Further, the foam layer has a compression modulus of less than 1 MPa when measured at 50% strain.

A head is disclosed for use with a continuous manufacturing system. The head may have a housing configured to receive a matrix and a continuous fiber, and a diverter located at an end of the housing. The diverter may be configured to divert radially outward a matrix-coated fiber. The head may also include a cutoff having an edge configured to press the matrix-coated fiber against the diverter.

Foam pads and method for making foam pads for use under an activity surface which meet or exceed G-max and HIC criteria under ASTM F1292-17 for playground equipment at heights of at least 9 to 12 feet and/or wherein the thickness loss of such pads at approximately one hour after removal of a 75 lb./in..sup.2 load applied to the pad at 25% deflection for one hour pursuant to ASTM D3575-08 Suffix B is less than 7%.

An improved composition for use in the manufacture of building materials having improved mechanical properties, including bending strength and creep recovery. Compositions and methods are disclosed for producing a polymer composite material containing reinforcing additives/additive blend, which is useful in the manufacture of composite building materials, including decking boards, rails, posts and the like. The present composite building materials have improved flexural and impact properties over similar composite building materials known in the industry, providing a viable alternative to wood, and other composites in the building industry.

A thermoplastic micro-porous polyurethane elastomer material with a micro particle size and a method for preparing the same are provided. The material comprises, by weight, 1-97% of support frame polymer material, 1-97% of pressure-resistant low-resilience polymer material, 0.01-0.5% of nucleating agent, and 0.1-10% of foaming agent. The method comprises the following steps: (1) is feeding polymer materials and the nucleating agent from the front end of a double-screw extruder, feeding the foaming agent from the middle, hot-melting and fully mixing all the raw materials, then further homogenizing hot melt in a static mixer, and afterwards, controlling the pressure of the hot melt and quantitatively delivering the hot melt by a melt pump. (2) is pelletizing the hot melt entering an underwater pelletizing chamber from the melt pump via a die, separating particles carried out by process water, and screening and drying the particles to obtain a target product.

A foamed article formed by foam injection molding or foam extrusion of a composition is disclosed. The article is formed from a molding composition consisting essentially of: 100 phr of at least two different hydrogenated styrenic block copolymers (HSBC), a first HSBC and a second HSBC, having different molecular weights, a molecular weight ratio of at least 1.2:1, respectively; and a weight ratio of ranging from 5:95 to 95:5, respectively; 10-55 phr of a polypropylene having a melt flow of at least 2 g10/min; and optionally up to 55 phr of a plasticizer, selected from hydrocarbon based oils, fatty acids, triglyceride oils, and mixtures thereof. The composition has a melt flow rate of 2-50 g/10 min, a Shore A hardness of 60-90, a melt strength (F) of at least 0.010 N, and a melt strength (V) of at least 10.

Circuit and to a process for managing transients and process and product anomalies in a plant for production of granulated expandable polymers EPS or extruded polymers XPS, said circuit being placed e.g. in a granulation plant along which are positioned: a mixing device suitable for mixing additives and expanding agent within a stream of molten polymer; a granulator or an extrusion device positioned downstream of said mixing device; a deviation valve suitable for molten polymers placed along the line connecting said mixing device to said granulator or to said extrusion device upstream of said granulator or extruder, said deviation valve being provided with at least one inlet (A), a Stand-by position (A.fwdarw.C) and a Run position (A.fwdarw.B), said circuit further comprising a heating device downstream of said valve, a separation device downstream of said heating device suitable for physically separating the blowing agent from the polymer and any additives present therein, and a cooling device positioned between said separation device and said mixing device.

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.

A fracturing liquid delivery hose for recovery of shale oil and gas, and manufacturing method and co-extrusion mold thereof are provided. The method includes extrusion of a cover layer with a first adhesive layer and an inner lining layer with a second adhesive layer, formation of an enhancement layer, heating and pressurizing for bonding between the cover layer and the enhancement layer and between the inner lining layer and the enhancement layer, so that the formed fracturing liquid delivery hose has resistance at least to high pressure and chemical corrosion. The cover layer and the inner lining layer can use different types of materials.