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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

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                                                                                  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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