Corona apparatus
AssigneeHoechst Aktiengesellschaft
InventorsAndreas Kolbe, Peter Dinter
Life of this patent
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Abstract
A corona apparatus comprising at least one roller electrode assembly, a supporting surface acting as a counter electrode, and a generator for generating an alternating current voltage for said electrode assembly characterized in that the roller electrode assembly comprises: a central shaft, an electrode, means for mounting said electrode to said shaft, a tube, means for mounting said tube for rotation about said shaft, said electrode contained within said tube, means for electrically connecting said electrode to said generator and means for supporting said shaft whereby said tube is positioned adjacent to said counter electrode.
Claims19
A method for the surface treatment of melts, films, foils and the like using a corona apparatus having a roller electrode assembly and a supporting surface acting as a counter electrode comprising the steps of:
- a. positioning an electrode on a central shaft of said roller electrode assembly;
- b. rotatably mounting a tube about said electrode and said shaft;
- c. applying an alternating current voltage to said electrode;
- and
- d. positioning said tube adjacent said counter electrode thereby forming a nib for said melts, films, foils and the like;
- whereby said electrode produces an electric field in the region of said nib.
Corona apparatus comprising at least one roller electrode assembly, a supporting surface acting as a counter electrode, and a generator for generating an alternating current voltage for said electrode assembly, characterized in that the roller electrode assembly comprises:
- a. a central shaft,
- b. an electrode,
- c. means for mounting said electrode on said shaft,
- d. a hollow of dielectric material tube
- e. means for mounting said tube for rotation about said shaft, said electrode contained within said tube,
- f. means for electrically connecting said electrode to said generator, and
- g. means for supporting said shaft whereby said tube is positioned adjacent said counter electrode.
Dependencies are inferred from the claim text.