Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Including application of internal fluid pressure to hollow...
Patent
1987-04-20
1988-11-01
Thurlow, Jeffery
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Including application of internal fluid pressure to hollow...
264154, 264167, 2641771, 425532, 425381, 425466, B29C 4904
Patent
active
047818808
ABSTRACT:
An enclosure having a self-supporting side wall formed of a plurality of laterally spaced ribs with non-self-supporting thin webs therebetween whereby the ribs and webs cooperate one with the other to provide an enclosure having shape-retaining characteristics. A bottom wall is provided constituting an integral extension of the side wall with the ribs being scored at the juncture of the side and bottom walls to permit the material to be folded such that the side wall and bottom wall lie generally normal one to the other. The enclosure has a closure portion including either a substantially rigid portion having a neck with an opening or a self-supporting rib and web closure terminating in the neck and opening. A cap is provided for sealing the enclosure. Blow molding and blown film techniques are used to form the enclosure.
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