Method of fabricating pipe units

Details Method of fabricating pipe units Method of fabricating pipe units

B - Operations, Transporting

29

C

26/155, 18/513

B29C 49/48 (2006.01) B29C 49/20 (2006.01) B29C 65/70 (2006.01) B29C 49/04 (2006.01)

Patent

CA 1328550

METHOD OF FABRICATING PIPE UNITS ABSTRACT OF THE DISCLOSURE The method of fabricating a bundle-like pipe unit, using a blow molding machine having a plurality of heads feeding parison into a molding die, comprises the steps of forming a plurality of hollows independent from each other in the molding die, forming one or more channels connecting the hollows to each other laterally, feeding the parison into the hollows from the respective heads of the blow molding machine, and blowing air in the parison, in a manner such that a plurality of independent pipes are molded in the respective hollows and that the pipes are joined with each other at the lateral walls thereof by the parison which are forced in the channels upon air blowing. Suction forces are preferablly applied on the parison when the parison is fed into the hollows of the molding die. The pipe unit thusly fabricated is light in weight and possesses flexibility as well as anticorrosion property due to the characteristics of the parison.

611710

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