Avoid full-coverage color designs for paper cups.
Cups with full-coverage color designs require heavy ink application. Furthermore, they are often sealed in packaging immediately after production. During the drying process, solvent-based inks release harmful organic compounds; additionally, isopropyl alcohol from alcohol-based dampening solutions and volatile gases from overprint varnishes pose health risks. With full-coverage designs, the ink covers the entire cup body, including the area near the rim. When drinking, one's lips come into contact with this area, making it easy for these chemical substances to be ingested along with the liquid, thereby affecting health. Therefore, we generally advise clients against full-coverage designs; smaller color blocks are preferable. Similarly, graphic elements-especially solid color blocks-should not be placed near the rim, as this can lead to the same adverse effects.
Raise text and graphic elements near the cup bottom by 5mm.
Once the cup blank is loaded onto the machine, the bottom 5mm section undergoes a heat-sealing process to ensure structural integrity. However, the high temperatures and pressure involved can easily smudge or distort graphics and text located near the base, compromising the cup's appearance. Consequently, when creating designs, any text or graphic elements positioned near the bottom should be raised by approximately 5mm to account for this sealing area.
