Commer, S.p.a.

Johnson Controls Gmbh

Eurochem Engineering S.r.l.

Dante Siano

Cristiano Puppi

Luigi Vecchiarino

Francesco Mascia

Riccardo Tesser

Martino Di Serio

Valeria Fiandra

Giovanni Di Nuzzi

Mario Nastasi

Multilayer products, such as vehicle trim panels, provided with an external skin layer and an internal core layer are co-injection molded by injecting external material (P) through a first plurality of points of injection ( ) and injecting the core material (C) through a second plurality of points of injection ( ), the points and nozzles of injection of one material being physically distinct from those of the other material.

Process and device for co-injection molding multilayer products

A granulated or pelletized composition of propylene homo and copolymers onto which are grafted grafting units of vinylpolybutadiene and further grafting units selected from polyalkenylenes, EPM and EPDM polymers, and mixtures thereof. The composition has a Shore D hardness value equal to or less than 35 and a fogging value equal to or greater than 90%. The composition is suitable for injection molding. A method of producing the granulated or pelletized composition comprising forming the composition by mixing the propylene homo and copolymers, vinylpolybutadiene grafting units and further grafting units with peroxide radical initiators, extruding the composition under heat and granulating the extruded polymer composite. An interior car door panel or interior car trim element having an outer skin made of granulated or pelletized forms of the composition.

Granulated or pelletized compositions of grafting units

Trim panels for motorvehicles are manufactured by: injection molding a panel base portion having missing parts of predetermined area and shape, said molding involving the coinjection of a surface material and of an inner core material; separately producing a plurality of portions of panel having area and shape substantially corresponding to the missing parts and fastening said separately produced portions to said panels.

Apparatus for manufacturing coinjected panels

An article having complex geometrical shape is obtained by consecutively coinjection molding a first and a second material substantially without stopping time between the two injections. Pressure, temperature and mass flow rate are controlled to obtain a homogeneous distribution of the several flows of injected material and to have them meet in a fluid condition and melt together at the meeting point.

Process and apparatus for coinjection molding of articles having complex shape

Process for the manufacture of trim panels for motorvehicles

A process for the production of shaped lined panels, of the type wherein the lining is positioned on a frame including a series of reference and adjusting pivots capable of being reversibly engaged by a pluality of corresponding reference holes provided on the lining. The process positions the pivots on the frame according to an arrangement which is a function of the arrangement of said plurality of holes in the covering and the shaped and correctly lined panel.

Process and device for the production of panels

A process for the manufacture of panels, wherein a superficial covering including at least one fabric portion is surrounded by an adjacent portion of plastic material, wherein the covering is coupled by molding to a plate of heated thermoplastic material, simultaneously with the shaping of the plate. The process brings a considerable area of the fabric portion into contact with the heated plate before coupling of the whole covering by utilizing at least one pressing element such as a dandy roll, or similar movable piece of the die, positioned in correspondence with the corresponding fabric portion.

Growing community of inventors

Cologno Monzese, Italy

Dante Siano