Patent ID: 6776950
Filing Date: 2004-08-17
Classification: B29C,B29K,B29L

Abstract:
A slush-moulding method combined with the cross-linking including the following steps:preparing of a suitable quantity of at least a first polymer blend; grinding or micro granulating said first blend in order to obtain a powder; charging into at least a tank of a sufficient quantity of polymer powder; heating a mould to a given temperature; coupling said tank with said mould with suitable coupling means; moving the reciprocally coupled tank and mould from an initial condition to a turned-over condition in which the tank transfer at least part of the powder into the mould, thus obtaining a layer of completely or partially melted powder adhering to at least a portion of the shaping surface of the mould; further possible heating in order to complete the melting; cooling the mould so as to obtain a semi-finished product as a film; stripping-off the semi-finished product as a film, wherein before or after the stripping-off step, the semi finished product as a film is cross-linked by means of a radiation having an intensity between 70 and 300 kGv in order to obtain a covering letter.