A method for manufacturing a closure constructed for being inserted and securely retained in a portal-forming neck of a product-retaining container is provided. Such method may include intimately combining a plurality of particles comprising cork and having a specified particle size distribution with a plastic material including one or more thermoplastic polymers, optionally in combination with other constituent(s) to form a composition, heating the composition to form a melt, extruding or molding a closure precursor from the melt to provide a specified water content range, and optionally cutting and/or finishing the closure precursor. A composition for use in manufacturing a closure for a product-retaining container includes a plurality of particles comprising cork and having a specified particle size distribution with a plastic material including one or more thermoplastic polymer, optionally in combination with other constituent(s). Methods for producing particulate material, cork composite material, and additional methods for producing closures are also provided.

The present disclosure refers to an anti-slip pad for a sliding sports board, as for example water sports boards, snowboards or skateboards, said pad comprised mostly of cork.

One subject of the present invention is an electromagnetic-wave-absorbing composite material comprising a carrier matrix (11) and an electromagnetic-wave-absorbing filler (12). According to the invention, the carrier matrix (11) is a cork matrix, which is formed of particles the equivalent diameter D.sub.el of which is comprised between 10 m and 5 mm, and the composite material (1) has a real permittivity higher than 1.2 and a dielectric loss tangent tan higher than 0.1. Another subject of the present invention is a method for producing such a material, and the use of this material as an absorber, in particular in an anechoic chamber, or as a radar absorber in stealth devices, or even to improve the electromagnetic compatibility of electronic devices.

The present invention relates to a process for preparation of polyethylene-cork composite panels comprising the steps of: mixing 10-64% of cork granulate and 36-90% of polyethylene granulate at room temperature, and feeding a press with this mixture; compressing this mixture in the press with a compression force in the range of 300-450 kN, at a temperature in the range of 160-200 C. and for a hot compression time between 24-180 seconds; and cooling to room temperature, with a compression force between 350-450 kN, for a cold compression time between 32 and 240 seconds; to obtain panels with a thickness between 3 and 5 mm. The invention further relates to a polyethylene-cork composite panel and also to use thereof in the construction industry, particularly as cover board core.

The present invention relates to a process for preparation of polyethylene-cork composite panels comprising the steps of: mixing 10-64% of cork granulate and 36-90% of polyethylene granulate at room temperature, and feeding a press with this mixture; compressing this mixture in the press with a compression force in the range of 300-450 kN, at a temperature in the range of 160-200 C. and for a hot compression time between 24-180 seconds; and cooling to room temperature, with a compression force between 350-450 kN, for a cold compression time between 32 and 240 seconds; to obtain panels with a thickness between 3 and 5 mm. The invention further relates to a polyethylene-cork composite panel and also to use thereof in the construction industry, particularly as cover board core.

The present invention provides methods for preparing the nut waste composites from a nut waste component, one or more binders, and an oil using a compounder/extruder.

The present invention provides methods for preparing the nut waste composites from a nut waste component, one or more binders, and an oil using a compounder/extruder.

Provided is a composition including a polymer matrix having an elastomer phase with a glass transition temperature of less than or equal to 20 C. and particles of cork which are dispersed in the polymer matrix. Also provided is a process for preparing the composition by hot-mixing the polymer matrix in a softened state with the particles of cork and optionally with one or more additives, in an extruder, the particles of cork being introduced laterally after the introduction of the polymer matrix which is introduced into the feeder at the beginning of extrusion.

Provided is a composition including a polymer matrix having an elastomer phase with a glass transition temperature of less than or equal to 20 C. and particles of cork which are dispersed in the polymer matrix. Also provided is a process for preparing the composition by hot-mixing the polymer matrix in a softened state with the particles of cork and optionally with one or more additives, in an extruder, the particles of cork being introduced laterally after the introduction of the polymer matrix which is introduced into the feeder at the beginning of extrusion.

A composite caulk comprising paper wool, perlite, a particulated wood material having a particle size below 2 mm, a particulated fire retardant bark material having at least one axis of length with a dimension below 2 mm and a polyvinyl-acetate based aqueous dispersion adhesive; and wherein said composite caulk forms a heterogeneous caulk which can be dispensed using a handheld caulking gun.