screen print facilities best and worst practices pdf's... · screen print facilities best and...
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Office ConvertOffice Convert
Screen Print Facilities Best and Worst
Practices
Lawrence Lai
Levi Strauss & Co
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Content
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General Factory Conditions
Ink Mixing / Store Area
Screen / Mixing Tool Storage Area
Curing
Quality Control
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General Factory Conditions Best Practices
• Printing surfaces should be clean and smooth.
• No clutter or dirt under the tables, plus the tables are cleaned down after each print run.
• Stand / trolley is a good idea for storing production ink.
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General Factory Conditions Worst Practices
• Ink stored on the floor can get contaminated or spilt
• Storing old/unused screens under printing benches is not allowed
• Squeegee type not properly labeled
• Uncontrolled storage areas
contaminated with ink
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General Factory Conditions
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General Factory Conditions O
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General Factory Conditions
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General Factory Conditions
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Ink Mixing / Store Area
Best Practices • Aluminum surfaces to help with cleaning
• Ink mixing scales are covered in a
protective film and calibrated
• All dye containers should cleaned, labeled and have lids on them to stop possible color contamination
• Tools and chemicals properly labeled
• MSDS, spill clean up equipment available
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Ink Mixing / Store Area
Worst Practices • Workspace dirty
• Ink containers have multiple colors of ink on them and no lids
• Weighing equipment out of calibration
• Tools and chemicals not labeled or labeled improperly
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Ink Room and Storage
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Ink Room and Storage
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Ink Room and Storage
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Ink Room and Storage
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Screen / Mixing Tool Storage Area
Best Practices
• Screens properly cleaned, dried before put away for storage
• Screens stored off the floor
• Each mesh type should marked clearly
• Tension should be checked to meet with the required specifications
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Screen / Mixing Tool Storage Area
Worst Practices
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Screens stacked against each other
Screens sitting on the floor
Ink residue left on screens
Do not have proper screen stretching equipment
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Screen Storage
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Screen Room
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Screen Storage
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Screen Room
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Screen Room
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Curing
Best Practices
• Table top flash curing is recommended
• Maintain a good condition of curing belt
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Curing
Worst Practices
• Flash curing with Hair Dryers or Heat Guns is not allowed
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Curing
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Curing
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Curing
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Curing
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Quality Control
Best Practices • QC’s should check color against
approval, prior to production.
• In-Line QC’s should check prints as often as possible
• Approved samples should be available at the end of the production line.
• Final 100% QC check should be carried out.
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Ink Room and Storage
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Quality Control
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Quality Control
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Toolkit Reference
• Appendix I—Screen Printing & Applications/Finishing Best Practices
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