Specific Process Knowledge/Back-end processing/Polymer Injection Molder: Difference between revisions
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Topas polymers are supplied by Danchip. All other polymers are purchased by the users themselves. All polymers (and each individual grade of each polymer) must be approved for use at DTU Danchip. If you would like to use a new polymer or a new grade of a certain polymer, please fill out the application form which can be found in LabManager by going to the 'Documents' tab of the 'Info' page for the Polymer Injection Molding machine. You can also click this direct link: [http://labmanager.dtu.dk/view_binary.php?fileId=2857 New_polymer_application.dotx]. | Topas polymers are supplied by Danchip. All other polymers are purchased by the users themselves. All polymers (and each individual grade of each polymer) must be approved for use at DTU Danchip. If you would like to use a new polymer or a new grade of a certain polymer, please fill out the application form which can be found in LabManager by going to the 'Documents' tab of the 'Info' page for the Polymer Injection Molding machine. You can also click this direct link: [http://labmanager.dtu.dk/view_binary.php?fileId=2857 New_polymer_application.dotx]. | ||
When the polymer has been approved you will receive labels which must be used to label your polymer. All polymers left in the injection | When the polymer has been approved you will receive labels which must be used to label your polymer. All polymers left in the injection molding room must be marked with this official DTU Danchip label. '''Polymers not labelled appropriately may be thrown out at any time'''. | ||
The easiest way to get an overview of polymers and processes used on the polymer injection | The easiest way to get an overview of polymers and processes used on the polymer injection molding machine is to go to LabManager and consult the [http://labmanager.dtu.dk/function.php?module=Processlog&view=editlog&machid=278 Process Log for the injection molding machine]. If you would like use a non-Danchip polymer for a test, please contact the owner of the polymer and ask if you can have a sample. A complete list of all polymers in use at DTU Danchip and who owns them can be found in LabManager on the Info page for the polymer injection molding machine on the 'Documents' tab. You can also click this direct link: [http://labmanager.dtu.dk/view_binary.php?fileId=3044 Approved_polymers_list.pdf]. | ||
==Process parameters and optimization== | ==Process parameters and optimization== | ||
There are no standard injection | There are no standard injection molding processes because it varies significantly how users prefer to optimize their process and how they prioritize parameters such as polymer type, replication fidelity, dimensional accuracy, optical properties, residual stress and cycle time. However, browsing through the [http://labmanager.dtu.dk/function.php?module=Processlog&view=editlog&machid=278 Process Log] it's usually not a problem to find a program made for the polymer and tool at hand which can be used as a starting point. | ||
The injection moulding cycle consists of the steps outlined below. Click on each step to get a description of the most important process parameters for each step: | The injection moulding cycle consists of the steps outlined below. Click on each step to get a description of the most important process parameters for each step: | ||