Method and apparatus for manufacturing a thin-walled article

Plastic and nonmetallic article shaping or treating: processes – Direct application of electrical or wave energy to work – Conveying or aligning particulate material

Reexamination Certificate

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Details

C264S255000, C264S309000, C264S484000, C425S17480E, C118S625000, C118S628000

Reexamination Certificate

active

06890475

ABSTRACT:
The invention relates to a method for manufacturing a thin-walled article, wherein a single- or multi-component, essentially polymer-based material (1), such as plastics, elastomers, and/or the like, is sprayed in an elecrical field (E) in an electrically charged state. The thin-walled article is manufactured in the electrical field (E) by spraying (II) an electrically charged material into the contact with a mould (2) set at an electric potential, after which spraying cycle (II) the article is, at least in terms of its appearance, immediately a finished product after its demoulding/releasing from the mould (2). The invention relates also to an apparatus operating in accordance with the method.

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patent: 2425652 (1947-08-01), Starkey
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patent: 4055550 (1977-10-01), Panadiker et al.
patent: 5149563 (1992-09-01), Colier
patent: 0 541 230 (1993-05-01), None
patent: 0 623 782 (1994-11-01), None
patent: WO 9825747 (1998-06-01), None

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