Solvay (societe Anonyme)

Solvay & Cie

Inergy Automotive Systems Research (societe Anonyme)

Inergy Automotive Systems Research (s.a.)

Solvay Sa

Plastic Omnium Advanced Innovation and Research

Solvay (soci&eacute;t&eacute; Anonyme)

Inergy Automotive Systems Research

Serge Dupont

Jules-Joseph Van Schaftingen

Claude Dehennau

Bjorn Criel

Yannick Gerard

Stéphane Leonard

Stephane Leonard

Pierre-Francois Tardy

Jean-Francois Coing

Joël Op De Beeck

Barbara Mabed

Pascal De Henau

Philippe Martin

Yvonnig Guezennec

Didier Delimoy

Jean-Claude Mur

Thierry De Bruille

Jöel Op De Beeck

Martin Vonk

Stephane Toutain

Franck Bajor

Jean-François Coing

Stéphane Toutain

Pierre-François Tardy

Yannick Gérard

Stéphane Léonard

A method for manufacturing a hollow body, typically a tank, from a plastic material. The method includes molding a preform into shells in a molding tool; joining an insert to an inner surface of a shell of said shells, the insert defining a sub volume within the hollow body to be made; joining together the shells to form the hollow body by closing the molding tool and applying a main pressure to a main volume enclosed by the shells. It is proposed to apply a sub pressure to the sub volume while applying the main pressure to the main volume, such that a pressure difference between the main volume and the sub volume is bigger than 0.20 bar (PP&#x3e;0.20 bar) and smaller than 3.00 bar (PP3.00 bar).

Method for manufacturing a hollow body, in particular a fuel tank

A process for manufacturing a plastic hollow body by molding two sheets of molten plastic in a mold including two cavities, the process including: a) two molten plastic sheets are manufactured by extrusion of at least one stream of molten plastic and transverse cutting thereof; b) these sheets are introduced between the mold cavities; c) the mold is closed and the hollow body is manufactured by conforming the two sheets to the mold cavities; d) the hollow body thus obtained is removed from the mold; e) all of operations a) to d) are repeated to manufacture another hollow body from two new sheets; and before, during, or after the transverse cutting operation, the lower portion of the two new sheets is cooled using a specific device that makes possible a local cooling of the sheets in the lower portion.

Process and equipment for manufacturing a plastic hollow body from two sheets

A process for manufacturing a fuel tank including a thermoplastic wall and a fibrous reinforcement on at least one portion of its outer surface, according to which: a molten thermoplastic parison is molded in a mold and is left to cool in order to obtain a wall of the tank; a fibrous reinforcement is chosen that includes a thermoplastic similar to or compatible with that of the wall of the tank and the reinforcement is heated so as to soften or even melt the thermoplastic of the reinforcement; and the reinforcement is applied to an outer surface of the tank by exerting a force that makes it possible to weld the reinforcement and the outer surface.

Process for manufacturing a fuel tank and use thereof in a hybrid vehicle

A method for manufacturing a plastic fuel tank including a built-in neck, by molding a parison in a mold. The neck is molded by locally deforming the parison using a concave counter-form and a convex form configured to enter the counter-form, these two parts being secured one of them to the mold and the other to a core located inside the mold, or vice versa.

Method for manufacturing a plastic fuel tank comprising a built-in neck

Layer made of base plastic comprising, in the dispersed form, nodules with a diameter of less than or equal to one micron comprising barrier plastic incompatible with the base plastic; multilayer structure comprising at least one such layer and process for the manufacture of such layers/structures.

Layer made of base plastic comprising barrier plastic nodules

Process for manufacturing hollow plastic bodies, especially motor-vehicle fuel tanks, from an extruded parison of closed cross section, in which at least one cut is made in the parison which is then formed by moulding.

Process for manufacturing hollow plastic bodies

Process and device for the extrusion-moulding of hollow bodies made of a thermoplastic, comprising the extrusion of a tubular parison, its deposition via the use of a robot arm in a preforming device which takes it into a lower part of a mold in which the parison is blow-molded in order to produce the hollow body. Certain steps of the process may be carried out in parallel. This process and this device are very suitable for producing hollow bodies of complex three-dimensional geometry with a high productivity.

Process and device for the extrusion-moulding of hollow bodies made of a thermoplastic

Process for manufacturing hollow plastic bodies, especially motor-vehicle fuel tanks, from an extruded parison of closed cross section, in which at least one cut is made in the parison which is then formed by molding.

Process for manufacturing a plastic fuel tank from two shells formed by molding, which are joined together, at least one shell being produced by compression-molding a portion of a plastic sheet between a mold and a punch and by the remaining portion of the sheet being blow-molded in the region not compression-molded.

Method for making a fuel tank in plastic material

The invention relates to a multilayer tank or tubing made of a thermoplastic, comprising at least one layer comprising a barrier resin, adjacent to at least one layer consisting of a blend comprising at least one polyolefin and at least one functionalized polyolefin, and the said functionalized polyolefin of which comprises functional monomeric units chosen from carboxylic acids, dicarboxylic acids and the anhydrides corresponding to the said dicarboxylic acids.

Fuel tank or tubing for filling this tank

Thermoplastic hollow molded body

The invention relates to a system for preforming an extruded plastics parison including a nonplanar conveyor belt. It also relates to a method for preforming an extruded parison, including a step during which the parison is deposited on a conveyor belt. The conveyor belt is not planar. This step may be accompanied by a step in which the parison undergoes transverse deformation. The invention also relates to a method of manufacturing at least one article, including such a preforming step.

System and method for preforming an extruded parison

Composite article comprising an injected hollow body or a solid body based on at least one plastic A, reinforced by at least one bundle of continuous reinforcing fibers, the bundle being wound externally at its surface, substantially perpendicular to its axis, as well as by reinforcing fibers dispersed within it, substantially parallel to its axis, and continuous process for manufacturing it.

Composite article and process for manufacturing it

The relationship between the average degree of roughness of the faces of rough appearance, expressed in microns, and the percentage by weight of units derived from vinyl acetate in the copolymer of which the film consists is greater than 0.019. The film is extruded in the form of an extruded sleeve which is cooled in the die by a circulation of a coolant fluid whose temperature T satisfies the relationship: ##EQU1## in which Tc is the temperature at which the Napierian logarithm of the relationship between the length at break and the initial length of a test specimen of the copolymer has a value of 87% of its value at 180.degree.

Process for producing a resin film based on a copolymer of ethylene and

Means for applying a plastic finishing layer to the surface of a composite article comprising an extruded plastic-based solid body reinforced by one or more bundles of reinforcing fibers, these bundles being affixed to its surface, comprising a ring (1), the entry diameter (2) of which is greater than its exit diameter (3), the internal surface (4) of the said ring furthermore providing a decreasing variation in the internal diameter between its entry and its exit; method of applying a finishing layer, in which method these means are used, and coated composite article.

Growing community of inventors

Vilvoorde, Belgium

Serge Dupont