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US 7,003,896 B2Granted
Radiation curing and drying
OwnerLeonard Immanuel Tafelinventor
Life of this patent
Estimating the term…
Abstract
An improved apparatus and method for drying materials. A hot surface in a strong electrostatic field is used to ionize a stream of heated gasses passing over the surface, which assists in directing the stream against the object to be dried, and ionizes the vapors and gasses emitted from surface of the material being dried, which assists in their separation and removal.
Claims9
A system for solidifying ink printed on a moving web of paper comprising:
- a structure means for directing an airflow across a plurality of elongated and perforated hollow tubes at a high negative electrical potential,
- said tubes also containing flammable gas under pressure, so disposed as to emit flames along the length of said tubes,
- said tubes thereby becoming sufficiently heated so as to initiate thermionic-emission of ions from said tubes into said airstream, and
- charge bars so disposed that said web is interposed between said charge bars and said tubes,
- the ionized airstream being thereby attracted to the web interposed in the electrostatic field created between said tubes and said charge-bars, thereby causing ionization of gasses, vapors and fumes as they are emitted from said web, and
- means for collecting said ionized gasses, fumes and vapors.
3 more elements
A system for solidifying ink printed on a moving web of paper comprising:
- a structure means for directing an airflow across a plurality of elongated tubes,
- said elongated tubes being maintained at a sufficiently high temperature and electrical positive voltage potential to cause a stream of ions to be released from said tubes and said flames, thereby ionizing said airstream wherein
- said elongated tubes contain a mixture of fuel and air and being so disposed as to support flames along their length, and
- said flames being spaced from the web being treated , and
- charge bars so disposed that said web is interposed between said charge bars and said elongated tubes, whereby an electrostatic field is created causing ionization of said vapors gasses and fumes as they are repelled from said web.
2 more elements
A system for solidifying a coating on a moving web comprising:
- blower and duct structures for directing an airflow across a plurality of heated high-voltage structures so disposed as to provide thermionic emission, the heated and ionized airflow then being attracted towards a plurality of elongated charge bars,
- said moving web being interposed between said heated high-voltage structures and said charge bars and
- said ionized airstream being thereby attracted to the web interposed in the electrostatic field created between said wires and said charge-bars,
- thereby causing ionization of the emitted effluent consisting of condensing vapors, fumes and nascent gasses as they leave said web,
- said web then moving into a second position wherein said emitted effluent is repelled from the web by a second charge bar and attracted to a collection structure.
2 more elements
Dependencies are inferred from the claim text.