same productivity of a fast Paternoster system , on one fifth of its footprint , only 3 by 2 m each Drum , with access on the 4 sides .
· The foam rises vertically in the door cavity , with a positive effect on the thermal insulation : the elongated cell ' s structure produces more cells within the thickness of the door than those obtained when foaming it horizontally , and placing more cells ( thus more obstacles ) in the direction of the heat transfer improves the Lambda value – the insulation capacity - of the door .
· All the air contained in the door cavity is rushed out through the narrow top side of the mould , avoiding any risk of air entrapment on one of the two aesthetic sides : The same good quality is available on both side of the door regardless of the way it is loaded into the mould . No more issues about plastic liner on top or bottom side , we talk now about left and right side .
· The distribution of densities within the foam is optimal , with a
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maximum difference of 0.5 kg / m between the heaviest and the lightest sample . This saves a lot of foam , at the end of the year ! The VertiDrum is a real breakthrough in the industry especially when the reactivity of the foam is high and when the door shall contain additional inserts , moreover it can also be used for any kind of thin , rectangular insulating panel . We just applied for some patents regarding a new production solution based on free-riding moulds running in a track where they are kept closed , during the polymerisation period , by a continuous series of steel rolls mounted on rails . The line is conceived with a number of service stations , an injection point and a polymerisation area . Each station is dedicated to only one simple action that can be executed in very few seconds . Initially designed for a given polymerisation time , when the chemistry will allow for faster production cycles the line can be adapted simply removing a few polymerisation stations . Mould change can be performed in a dedicated station during the cycle time , without stopping or delaying the production . Fast , flexible , simple … the new system is now going into production at Electrolux Mexico in their Ciudad Juarez factory , and we are constructing another plant for delivery by the end of this year .
CN : Several news concerning the doors , it seems : anything new for the production of cabinets ? AO : No , nothing new in the past … 6 months , I ' m afraid ! For the cabinet production we are consolidating the supply of our VAI ( Vacuum Assisted Injection ) system which makes use of vacuum during the injection of the formulation and the expansion of the foam in the cabinet ' s wall cavities . This method provides a quick demoulding time , improved thermal insulation capacity , optimum adhesion of the foam to the metal structure and lower consumption of energy during the cabinet ' s life .
CN
We built to perfection the VAI version of a RotoPlug 2 foaming fixture , that allows for a model change in Zero-Time : when one size of cabinet has to be temporarily replaced by another in the foaming process , the rectangular platform holding the male plugs , on the upper side of the station , rotates by 180 degrees . The new male plug , already thermally conditioned to the correct temperature , is brought on the lower position of the platform , ready to start its cycle of foaming processes . The plug going off-duty is sent on the upper side of the platform , where it can wait for its new cycle of injections or it can be manually replaced or adapted to a new cabinet design . The adjustment operation on the upper plug can be executed while the lower plug is regularly producing . The major advantage of this system derives from the increased flexibility guaranteed to its users : a very small production series of a given model can be easily inserted with a very short notice without perturbing the output cadence . Stocks of finished cabinets can be dramatically reduced , since it ' s no more necessary to produce numerous units of each model only to justify the loss of time deriving from a mould change operation . And to finish with the innovation on cabinets , we supplied to Fisher & Paykel Thailand the RotoJig , a foaming station with a rotating platform that holds two fully-functioning polymerisation jigs , in its original VAI configuration , to work with vacuum . The service operations occur at the lower level , while foam injection and polymerisation are performed at the upper . This innovative design allows for both types of foam injection : it can be used with face-down refrigerators with multiple heads on the top , or with single injection from the compressor side , made on the lower position of the RotoJig . Double productivity per meter square of factory ! The rational design of our VAI foaming plant , including loading and unloading fast system and the mechanics of the jig have been so appreciated that we are asked to apply the same concept even for non-VAI production methods !
The Cannon RotoJig is a foaming station with a rotating platform that holds two fully-functioning polymerisation jigs . It can be supplied in a configuration suitable to work with VAI ( Vacuum Assisted Injection ).
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