THICK FILM HIGH TEMPERATURE THERMOPLASTIC INSULATED HEATING ELEMENT
    3.
    发明公开
    THICK FILM HIGH TEMPERATURE THERMOPLASTIC INSULATED HEATING ELEMENT 审中-公开
    热塑性绝缘HIGH-厚膜

    公开(公告)号:EP2279648A4

    公开(公告)日:2014-11-05

    申请号:EP09735779

    申请日:2009-04-21

    Abstract: The present invention provides an integrated thick film heating element on a substrate made from high temperature melt-flowable thermoplastic polymer/powder additive formulations which form an electrically insulating thermoplastic dielectric coating on the substrate, and electrically resistive lead free films and electrically conductive film formulations that are deposited and fired to form an integrated thick film heating element on a substrate at a processing temperature well below 600° C. This thick film heating element is formed on a substrate material coated first with the electrically insulating, filled melt flowable high temperature thermoplastic polymer/powder composite layer on which is deposited the electrically resistive lead free thick film that is capable of operating over a wide range of power densities for consumer and industrial heating element applications, with suitable electrical insulation properties under temperature cycling to for example 250° C.

    LOW TEMPERATURE FIRED, LEAD-FREE THICK FILM HEATING ELEMENT

    公开(公告)号:CA2615213C

    公开(公告)日:2015-08-18

    申请号:CA2615213

    申请日:2006-07-18

    Abstract: A lead free, thick film heating element. Known thick film heating elements contain environmentally hazardous material such as lead. This is particularly problematic when manufacturing thick film heating elements, as lead is often used in thick film formulations to allow the glass-based thick film to be processed at low firing temperatures. Using composite sol gel technology, the present invention provides a method to produce a lightweight mica-based thick film heating element based on thick film materials that are free from lead or cadmium. This mica-based element is lightweight, has the performance advantages of a thick film heating element, and may be processed at a low temperature using thick film materials. Particularly, the present invention provides a lightweight heating element comprised of a mica-based substrate material, a resistive thick film that can be produced by composite sol gel technology, optionally a conductive thick film which is used to make electrical connection to the resistive element, and optionally a topcoat which is used to provide protection against moisture and oxidation. This element is lightweight, provides efficient, rapid heat up and cool down, can be designed to provide even temperature distribution, and delivers power at lower operating temperatures resulting in increased element safety.

    THICK FILM HIGH TEMPERATURE THERMOPLASTIC INSULATED HEATING ELEMENT

    公开(公告)号:CA2721674A1

    公开(公告)日:2009-10-29

    申请号:CA2721674

    申请日:2009-04-21

    Abstract: The present invention provides an integrated thick film heating element on a substrate made from high temperature melt-flowable thermoplastic polymer/powder additive formulations which form an electrically insulating thermoplastic dielectric coating on the substrate, and electrically resistive lead free films and electrically conductive film formulations that are deposited and fired to form an integrated thick film heating element on a substrate at a processing temperature well below 600°C. This thick film heating element is formed on a substrate material coated first with the electrically insulating, filled melt flowable high temperature thermoplastic polymer/powder composite layer on which is deposited the electrically resistive lead free thick film that is capable of operating over a wide range of power densities for consumer and industrial heating element applications, with suitable electrical insulation properties under temperature cycling to for example 250°C.

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