Automatic inspection apparatus detects flaws in heat seals between films of polyethylene or other thermoplastic material. Heat-sealed strip in multilayer plastic sheet continuously moved lengthwise over illuminators. Variations in light transmitted through sheet interpreted to find flaws in heat seal. Site of flaw marked to facilitate subsequent manual inspection. Heat sealing used to join plastic films in manufacturing of variety of products, including inflatable toys and balloons carrying scientific instruments to high altitudes.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Automatic Inspection Of Heat Seals Between Plastic Sheets


    Contributors:

    Published in:

    Publication date :

    1995-01-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English





    Fully-Automatic Surface Inspection of O-Ring Seals

    Seifert, Lars / Doerfler, Nikolas / Scholz, Oliver et al. | SAE Technical Papers | 2015


    Using Plastic Seals to Improve Compressor Performance

    Quance, Steve | Online Contents | 1997


    Kunststoffabdichtungen unter Brückenbelägen.
    Plastic seals under bridge decks

    Dudenhöfer, Bernd / Rückert, Philipp | ELBA - Federal Highway Research Institute (BASt) | 2022

    Free access

    SEALS FOR PASSENGER CAR AUTOMATIC TRANSMISSIONS

    GRASBY, R. C. | SAE Technical Papers | 1956