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  • Copyright ? Shandong Kingson packing tech. co., ltd 魯 ICP 魯ICP備13003121號-1  Powered by www.300.cn

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    International sales deparment :

    Export director :  Richard Bao

    Moblie :  +86 15054704098

    TEL :     +86 537 3154227

    Email :    admin@kingsonpacking.com

    Domestic  sales department :

    Sales manager :  Mr. Li

    Mobile : +86 13954733186

    TEL :   +86 537 3154228

    Email:   info@kingsonpacking.com 

    Address : 12 st Industry Park , High Tech Zone , JINING , 
                     SHANDONG Province , CHINA

    TEL :+86-537-3154227/228/229

    FAX : +86-537-3154230

    |
    Technology

    EXTRUSION:
    BRIEF DESCRIPTION OF THE MANUFACTURING PROCESS OF  FILMS:
    The transformation process of is called “DOUBLE BUBBLE”.

    The first phase is the extrusion of polymer in a descending direction through a multilayer die which forms a primary tube that is immediately cooled.

    The primary tube is then pulled to the top of the orientation tower, using a Pull Unit.

    At the top of the tower, the primary tube is drawn in a downward direction and, at the same time, it is heated to a temperature just below the melt point, supported by infra-red resistances. At the start-up, when this temperature is reached, air pressure is introduced expanding the tube to the gauge required.

    The biaxial orientation takes place as the tube is expanded and the downward speed is accelerated.

    After this operation, the bubble is collapsed between two sets of rollers. The resulting flat sheets are then cut and rewound onto master rolls.

     

    CONVERTING:
    Slitting
    Folding
    Marking
    Corona Treatment
    Pre-perforation
    Micro-perforation

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