Plastic Omnium Advanced Innovation and Research

Inergy Automotive Systems Research (societe Anonyme)

Jean-Francois Coing

Yvonnig Guezennec

Sebastien Jouie

Philippe Coulon

Andre George

Jozef Franko

Serge Dupont

Laurent Duez

Pierre De Keyzer

Pierre Lacome

Philippe Convain

Stephane Toutain

Arnaud Tryoen

Odile Sehier

A base made from plastic material for a motor vehicle tank accessory, including protrusions to be welded to a preform during production of the tank by blowing the preform, wherein: the base includes a solid surface recessed from the protrusions, the solid surface including a part without protrusions and a part taken up by the protrusions, the area of the part of the solid surface without protrusions is at least equal to one times the area of the solid surface taken up by the protrusions, the height of the protrusions relative to the solid surface is between 0.6 mm and 0.8 mm.

Base for an accessory and tank accessory, method for producing a tank

The invention relates to a tank of plastics material produced by blow-molding of a parison, incorporating a welding spout, of a shape projecting from its outer surface which has an edge configured to be welded to a corresponding edge of an attached part, the welding spout ending axially, on an inside of the tank, in a shape resulting from contact molding between the parison and a molding component, in which the welding spout ends axially on an outside of the tank in a shape resulting from contact molding between the parison and a molding component.

Method for forming a welding spout on a parison during the blowing of a tank

A plastic vehicle tank defining an interior volume provided to contain liquid and comprising: a. an upper wall; b. a lower wall; c. at least one connecting element joining the upper wall to the lower wall of the plastic vehicle tank, said at least one connecting element being located inside the interior volume provided to contain a liquid, and comprising a structure made of continuous fibers embedded in a matrix.

Plastic vehicle tank with connecting element having an improved breaking effect

A liquid vehicle tank () having a wall made of a plastic material, the tank () comprising a component () affixed to the wall, the component () having a portion () embedded in the wall, the embedded portion () having an external surface () a part of which is chemically incompatible with the plastic material of the wall, wherein the tank () also comprises a strengthening element welded to the wall over the embedded portion () of the component ().

Liquid vehicle tank comprising a fastened component

A method for forming a welding spout of a plastic tank from a multilayer parison, during blowing of the parison for manufacturing the tank. The method includes, in a blowing mold including two cavities and an insert, one of the cavities delimiting a recess for forming the welding spout, the recess having a mouth opening opposite the insert: providing a push member on the insert opposite the mouth of the recess of the cavity, capable of assuming a first position set back from the recess and a second position in which the push member occupies a portion of the mouth of the recess; positioning the push member in the first position thereof; blowing the parison to match a shape of the cavities; during creeping of the parison towards the inside of the recess, moving the push member into the second position thereof.

An inlet check valve intended to be entirely located within an internal volume delimited by a liquid tank of a vehicle and a filler pipe welded to the tank, the filler pipe defining a downstream direction followed by a liquid filling the tank, and an upstream direction opposite thereto the inlet check valve comprising a tube and, at the upstream end of the tube, resilient means for adapting the form of the tube to the internal wall of the filler pipe. The inlet check valve comprises hook means for securing the tube to an internal wall of the filler pipe and prevent the inlet check valve from moving within the filler pipe. The tube bears a skirt ending with an edge which can merge with the filler pipe wall when the latter is welded to the tank, making the edge a seal part of the inlet check valve.

Inlet check valve for a filler pipe welded to a liquid tank

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

It is proposed a process for fastening an accessory to the interior of a blow-molded tank, the tank having a plastic wall produced from a parison, the accessory comprising a body having at least one attaching portion projecting radially from the body. The process comprises the steps of:

Growing community of inventors

Clairoix, France

Jean-Francois Coing