Abstract: A method for manufacturing a foamed profile including one or more longitudinal hollow chambers having a closed section, including (a) extruding a first polymer composition, in the presence of one or more first foaming agents, into a foamed base profile having a polygonal section, preferably a rectangular section, the first polymer composition including one or more (co)polyesters, (b) cooling the foamed base profile, (c) creating a trench along the length of the foamed base profile by removing material, preferably by means of milling, cutting, laser or thermofusion, the trench forming two parallel branches in the foamed base profile, each of the branches including an outer surface opposite the trench and an inner surface facing the trench, and (d) extruding, inside the trench, a second polymer composition which may or may not be identical to the first polymer composition, preferably in the presence of one or more second foaming agents, into a spacer at at least one location between the two inner surfaces of th

Abstract: Disclosed herein is a method for producing a polystyrene foam. The polystyrene is dosed with a gas and the polystyrene and gas are mixed in an extruder in order to obtain a homogenous mixture. The homogeneous mixture is cooled as it travels through the extruder and is then extruded from the die at a pressure of less than 7 MPa to form a foam with a smooth skin.

Abstract: Disclosed herein is a method for producing a polystyrene foam. The polystyrene is dosed with a gas and the polystyrene and gas are mixed in an extruder in order to obtain a homogenous mixture. The homogeneous mixture is cooled as it travels through the extruder and is then extruded from the die at a pressure of less than 7 MPa to form a foam with a smooth skin.

Abstract: The invention relates to a method for making articles having a veined aspect that includes the steps of (a) extruding a layer of substantially transparent PMMA including pigmented granules in a first extruder, (b) extruding a polystyrene layer including a foaming agent in a second extruder, wherein the extrusions of steps (a) and (b) are carried out simultaneously as a co-extrusion.

Abstract: The invention relates to a method for making a fireproof polymer foam, and to a fireproof polymer foam containing a mixture of a polymer composition containing one or more optionally-substituted, sequenced or random, thermoplastic and/or elastomer homopolymers, copolymers or mixtures thereof, from 0.05 to 10 wt %, preferably from 0.5 to 5 wt %, relative to the mixture, of carbon nanotubes, and from 0.05 to 15 wt %, preferably from 0.5 to 10 wt %, relative to the mixture, of red phosphorus.

Abstract: The invention relates to a method for the continuous, single-step application of a decoration to at least one face of articles made from an extruded- or foamed-plastic material. The aforementioned step comprises: (i) the embossing of at least one face of the article, by passing the article under an embossing roller which is equipped with a relief groove; and (ii) the printing of said at least one face of the article with the transfer of an ink from a composite film with transferable ink. The printing step is performed concomitantly with the embossing step with the same embossing roller which is made form an elastic material and which is heated to the surface softening temperature of the plastic article. The invention also relates to a device for decorating extruded- and foamed-plastic articles in a single step, to the articles thus decorated and to the use of the method and the device.

Abstract: The invention relates to a method for producing solid, hollow or open profiles, in particular those including sharp edges, based on polystyrene, including the following steps: dosing polymers comprising polystyrene and optionally other additives and adjuvants plasticizing the components in an extruder in order to obtain a homogenous mixture, injecting a pressurized gas via an injection port kneading and pressurizing said homogenous mixture and gas until complete dissolution of the gas in order to obtain a mixture in a single phase, gradually cooling said mixture as a single phase in order to maintain the pressure required for solubilizing the gas, having said mixture pass as a single phase mixture, into a shaping tool in order to form a foam, having the thereby formed foam pass through an optionally temperature-controlled calibration system, drawing the calibrated foam with a motor.

Abstract: The invention concerns a foam comprising at least an adhesive material applied in the form of a tape on one surface of the freshly extruded foam. The invention is characterized in that the tape of adhesive material is divided into several strips, a first part of said strips comprising the adhesive material and a second part of said strips not comprising adhesive material, and in that the strips comprising adhesive material and the strips not comprising adhesive material are alternately arranged on the foam surface and in that the surface in contact with the adhesive material is uniform after the foam has been degassed.

Abstract: Disclosed is a removable edge guard (10) for installation close to an edge of a vehicle door or the like. The edge guard is made of polymeric material for removable installation on a vehicle door having a trim. The edge guard (10) comprises:—a bumper (12) section and—two planar sections (14), each adjoining said bumper section,—said bumper section (12) comprising a U-shaped portion conceived to bridge said trim of said vehicle door and extending laterally over said edge of said vehicle door,—said planar sections (14) comprising means to removably install said guard on said edge of said vehicle door.

Abstract: The invention concerns a fire-resistant polyolefin comprising between 5 and 90% of chlorinated polyethylene, a method for preparing them and their use for making foams or thermoformed products. The invention also concerns the resulting foams and thermoformed products and the use of the resulting foams.