Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With means to heat or cool
Patent
1994-03-07
1995-06-06
Scherbel, David A.
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With means to heat or cool
4253824, 425572, 138 38, 219422, 219424, 366146, 366336, 165181, B29B 1106, B29C 4527, B01F 310
Patent
active
054217156
ABSTRACT:
Apparatus for the simultaneous production of preforms consisting of polyethylene terephthalate (PET) fed and distributed to a plurality of cavities. In order to reduce the occurrence of acetaldehyde formation in a cavity, for example, a heated distributor block used in the production of preforms of the PET material, the material flowing through a channel is subjected to additional turbulence. To this end, an element, preferably of metal, is installed in the channels, such element being provided with sets of radial spokes which are azimuthally offset in relation to each other in the axial direction. Besides inducing turbulence, such spokes act as homogenizing elements serving to diffuse heat over the cross section of the flowing process material.
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Denison, Edward E., "A Layman's Guide to Pet Chemistry and Processing", 4th Annual International Conference on Oriented Plastic Containers, Mar. 25, 1981.
Fernandez Luis
Hofstetter Otto
Cooley Charles
Scherbel David A.
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