Recticel Automobilsysteme Gmbh

Recticel

Recticel N.v.

Peter De Wilde

Hugo De Winter

Yvan Vanluchene

Rudi Mortelmans

Koen Vanlandschoot

Kristof Benoit

Geert Van Houcke

Jean-Christophe Bouckaert

Dieter Van Damme

Mario Genetello

Filip De Swaef

Philippe Vander Schelden

Frank Dierens

Kris Bracke

Peter De Pauw

Rudy Mortelmans

The compressible sealing element () comprises at least one piece made of a resilient foam (). This foam has an open-cell content of at least 50% and has such a hardness that it requires a force of less than 2000 N to compress the sealing element () per meter length thereof to such an extent that the volume of a rectangular cuboid circumscribing the sealing element is reduced by 40%. The sealing element comprises a water-impermeable cover layer () which extends at least over its top surface. The sealing element is intended for filling at least partially the gaps between the stock rails () and the switch rails () in a railway switch to prevent the switch from being blocked in particular by snow. Advantages of the new sealing element is that it can easier be inserted in these gaps and that it has a smaller effect on the force required to close the switch so that it can also be applied closer to the free extremity of the switch rail ().

Compressible sealing element and use thereof for filling the gap between a stock rail and a switch rail in a railway switch

The present invention relates to a method for manufacturing a flexible skin which has at least one insert adhered thereto. In a first step, the skin is molded on a mold surface. In order to adhere the insert to the skin, an opening is first made in the skin giving access to the back face of the insert. The insert is positioned with its back face against the front face of the skin and an adhering layer is provided which is adhesively connected to the back face of the skin layer which surrounds the opening in the skin layer and, through this opening, to the back face of the insert. The adhering layer is preferably produced by applying a layer of a hardenable material, in particular a curable polyurethane composition. Since the back face of the insert engages the front side of the skin penetration of hardenable material to the front face of the insert is avoided.

Method for manufacturing a flexible skin having at least one insert adhered thereto

The present invention relates to a method for producing a flexible elastomeric composite polyurethane skin comprising a first and a second flexible polyurethane layer obtained by spraying a first and a second polyurethane reaction mixture onto one another. The first reaction mixture is an aliphatic polyurethane reaction mixture which is free of lead and formulated to produce a polyurethane elastomer having a flexural modulus smaller than 35 MPa. The second reaction mixture is an aromatic polyurethane reaction mixture producing a polyurethane elastomer having a smaller flexural modulus. The thickness of the aliphatic polyurethane layer could be made so small with respect to the thickness of the aromatic polyurethane layer that the composite skin has an average flexural modulus smaller than 30 MPa. Notwithstanding the lower reactivity of the aliphatic polyurethane reaction mixture, especially when using a higher NCO-index to reduce the 'rubbery feel' and the emission of VOCs and/or a flexibiliser to achieve a higher flexibility, sufficiently short cycle times can be achieved due to the accelerated curing observed when spraying the aromatic polyurethane sufficiently early against the aliphatic polyurethane layer.

Method for producing a flexible composite elastomeric polyurethane skin

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Wetteren, Belgium

Peter De Wilde