Method of fabricating pipe units

Details Method of fabricating pipe units Method of fabricating pipe units

1989-09-19

1991-09-17

Silbaugh, Jan H.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

29428, 29451, 2989014, 1563042, 264512, 264515, 264516, 425503, 425525, B29C 4904, B29C 4920

Patent

active

050492241

ABSTRACT:
A method of fabricating a bundle-like pipe unit using a blow molding machine having a plurality of heads feeding parisons into a molding die includes 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 parisons into the hollows from the respective heads of the blow molding machine, and blowing air into the parisons in a manner such that a plurality of independent pipes are molded in the respective hollows and the pipes are joined with each other at the lateral walls by the parisons which are forced into the channels upon air blowing. Suction forces are preferably applied on the parisons when the parisons are fed into the hollows of the molding die. The pipe unit thusly fabricated is light in weight and possesses flexibility as well as anti-corrosion properties due to the characteristics of the parisons.

REFERENCES:
patent: 4280859 (1981-07-01), Thompson
patent: 4801347 (1989-01-01), Garwood

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