Techniques for Flat Plastic
Surface Preparation: Clean the plastic thoroughly using appropriate solvents or a gentle abrasive to remove oil, dirt or other contaminants that may affect ink adhesion thereby providing a clean surface.
Screen Setup: Use flat screen printing setup with a vacuum table or jig to hold down the plastic so that it does not move during printing.
Ink Selection: Go for inks which are meant particularly for plastics substrates since they should have good adhesions plus durability.
Techniques for Plastic Bottles
Surface Preparation: Same as flat plastics, ensure that all bottles are cleaned and free from any impurities; treatment like flame treatment or corona discharge may improve ink adhesion.
Rotary Printing Setup: Utilize cylindrical screen printer that can accommodate round shape of bottles. This equipment ensures smooth and even application of ink around bottle circumference.
Ink and Curing: Choose elastic and highly adhesive inks capable of stretching with the plastic. Proper ink curing such as UV curing helps it set firmly and quickly.
By using these technicals correctly, you will get perfect printing results.
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