Cologne, Germany - Seal material and dispensing specialist Sonderhoff is to show its new MOLD'n SEAL system at the Arburg Technology Days 2011, being held in Lossburg, Germany, 23-26 March.
The highlight of the group's MOLD'n SEAL process, to be used in combination with a moulding machine from Arburg, is the inline production of injection-moulded parts, directly followed by applying a polyurethane gasket with the FIPFG (formed in place foam gasket) technology.
The FERMAPOR K31 foam-gasket formulation from Sonderhoff has been enlarged with new formulations which allow direct sealing of injection-moulded parts according to the cycle time of the moulding process.
In the first step of MOLD'n SEAL, a six-axis robot takes the injection-moulded parts out of the mould while they are still warm, moves them under the mixing head of the Sonderhoff dispensing machine and applies the sealing precisely, according to the given contour.
The temperature of the moulded parts, at about 40 dec C to 50 deg C, reduces the tack-free time of the polyurethane foam so that the six-axis robot can directly transfer the parts for further processing.
Sonderhoff says it MOLD'n SEAL approach offers a cost-saving alternative by using intelligent process technology. It simultaneously saves space and time in the production of injection-moulded components.
Nowadays, Sonderhoff points out, many plastic injection-moulded parts need a sealing to fulfill their functions. This means that the interlinking of moulding and formed-in-place foam gasketing processes becomes more and more important.